CN1207616C - Electrode Arrangement Structure of Wide Viewing Angle Liquid Crystal Display with Transverse Electric Field - Google Patents

Abstract

An electrode arrangement structure In a pixel region of a lateral electric field liquid crystal display (In-Plane Switching mode LCD, abbreviated as IPS-LCD) includes a comb-shaped common electrode including a bar (bar) and a plurality of comb teeth (comb-teeth), wherein each comb tooth extends from the bar along a first longitudinal direction; and the comb-shaped pixel electrode comprises a cross bar and a plurality of comb teeth, wherein each comb tooth extends from the cross bar along the second longitudinal direction, and the comb teeth of the pixel electrode are inserted among the comb teeth of the common electrode. The comb teeth of the common electrode can be made into a rectangular strip profile or a continuous-type side wall profile, and the comb teeth of the pixel electrode can be made into a rectangular strip profile or a continuous-type side wall profile.

Description

Electrode Arrangement Structure of Wide Viewing Angle Liquid Crystal Display with Transverse Electric Field

                      

The present invention relates to a horizontal electric field wide viewing angle liquid crystal display (In-Plane Switching mode LCD, referred to as IPS-LCD), in particular to an electrode arrangement structure of a horizontal electric field wide viewing angle liquid crystal display.

Background technique

Wide viewing angle horizontal electric field liquid crystal display (IPS-LCD) is one of the mainstream wide viewing angle LCD technologies. The difference from general twisted nematic LCD is that the common electrode (common electrode) and pixel The electrode (pixel electrode) is made on the same side of the glass substrate (TFT substrate). It uses a transverse electric field to drive the common electrode and the pixel electrode, which can make the liquid crystal molecules rotate on the plane and thus greatly increase the viewing angle, so it has a wide viewing angle and high light efficiency. , high contrast and other advantages.

However, as shown in FIG. 1, during the rotation of the liquid crystal molecules 1 towards the transverse electric field, when the angle between the liquid crystal molecules 1 and the common electrode 2 or the pixel electrode 3 is 45° or 135°, in some oblique viewing angle regions When viewing IPS-LCD inside, there will be blue or yellow coloring (coloring), which will greatly reduce the display quality of IPS-LCD. In view of this, a herringbone electrode structure has been developed in the prior art, which can adjust the rotation angle of liquid crystal molecules. As shown in Figure 2, the thin film transistor (thin film transistor, TFT) substrate 10 of existing IPS-LCD comprises the pixel area 24 of a plurality of arrays, is extended by a plurality of data lines 12 of Y direction and a plurality of X directions. The gate line 14 is defined and formed, wherein each pixel region 24 includes at least one TFT element 16 arranged at the intersection of the data line 12 and the gate line 14, a comb-shaped (comb-shaped) pixel electrode 18 and a herring-shaped The common electrode 20. As far as the comb-shaped pixel electrode 18 is concerned, its bar (bar) 18a is arranged above the gate line 14 to form a capacitor, and its plurality of comb teeth 18b, 18c are continuous ㄑ shape (chevron), And it extends from the horizontal bar 18a along the Y direction. As far as the herring-shaped common electrode 20 is concerned, the plurality of herringbone 20b, 20c extending from both sides of the central spine 20a to the Y direction is in the shape of ㄑ, not only interlaced with the comb teeth 18b, 18c of the pixel electrode 18, but also And the ㄑ shape of the fish bones 20b, 20c is arranged in parallel with the ㄑ shape of the comb teeth 18b, 18c. In addition, the surface of the TFT substrate 10 is covered with an orientation layer, and its rubbing direction is shown by arrow A, so when no voltage is applied, the liquid crystal molecules 22 will be aligned along the direction of arrow A.

When a voltage is applied to the TFT substrate 10, a transverse electric field is generated between the fishbones 20a, 20b of the common electrode 20 and the comb teeth 18b, 18c of the pixel electrode 18, so that the liquid crystal molecules 22 rotate toward the direction of the electric field. Using the central spine 20a of the common electrode 20 as a distinction, the pixel area 24 can be divided into multiple first-time pixel areas 241 and second sub-pixel areas 242, and the liquid crystal molecules 22a and 22b located on both sides of the central spine 20a will be Turn in the opposite direction. For the first pixel area 241, since the fish bones 20b, 20c and the comb teeth 18b, 18c are both ㄑ-shaped, the liquid crystal molecules 22a, 22a' on both sides of the tip of the ㄑ-shaped will also rotate in opposite directions. And constitute a double block (two domains). The same situation also occurs in the liquid crystal molecules 22b, 22b' of the second sub-pixel region 242 . Since the fishbones 20b, 20c of the common electrode 20 and the comb teeth 18b, 18c of the pixel electrode 18 are both ㄑ-shaped, the generated transverse electric field also presents a certain angle of inclination, thereby affecting the rotation angle of the liquid crystal molecules 22 . In this way, the rotation angle θ of the liquid crystal molecules 22 between the common electrode 20 and the pixel electrode 18 can be controlled at 0°～+60° or 0° through proper ㄑ shape design. °～-60° to avoid the coloring phenomenon of blue light or yellow light.

However, the liquid crystal molecules 22 located at the tip of the ㄑ shape (that is, the boundary of the two blocks) will be squeezed by the liquid crystal molecules 22 with different rotation directions on both sides, and thus cannot rotate. Therefore, after the voltage is applied, since the common electrode 20 and the pixel electrode 18 themselves are not transparent, and the liquid crystal molecules 22 located at the boundary of the two blocks cannot rotate, the dotted line I-I, II- II will be displayed as a dark line, which reduces the aperture ratio of IPS-LCD. Especially when the shape of the fishbone 20b, 20c of the common electrode 20 or the comb teeth 18b, 18c of the pixel electrode 18 is designed as zigzag, the tip of the ㄑ shape will increase, and the aperture ratio of the IPS-LCD will become smaller.

Contents of invention

The present invention proposes an IPS-LCD electrode arrangement structure and its manufacturing method, which can adjust the rotation angle of liquid crystal molecules between the common electrode and the pixel electrode, so as to ensure the display quality of IPS-LCD, and can also solve the problem of double-block boundary In order to improve the aperture ratio of IPS-LCD in order to solve the dark line problem. The electrode arrangement structure in the prime area, including:

a comb-shaped common electrode, including a horizontal bar (bar) and a plurality of rectangular comb-teeth (comb-teeth), wherein each comb-teeth extends from the horizontal bar along a first longitudinal direction; as well as

A comb-shaped pixel electrode, including a horizontal bar and a plurality of comb teeth, wherein each comb tooth extends from the horizontal bar along the second longitudinal direction, and the plurality of comb teeth of the pixel electrode are inserted into the plurality of comb teeth of the common electrode Between the comb teeth, the outline of the two side walls of each comb tooth presents a continuous ∠ shape, wherein each comb tooth of the pixel electrode is adjacent to each comb tooth of the common electrode two by two.

Another aspect of the present invention provides an electrode arrangement structure in a pixel region of a lateral electric field liquid crystal display, comprising:

A comb-shaped common electrode includes a bar and a plurality of comb-teeth, wherein each comb-teeth extends from the bar along a first longitudinal direction; and each comb-teeth The contours of both sides of the ∠ are continuous; and

A comb-shaped pixel electrode, including a horizontal bar and a plurality of comb teeth, wherein each comb tooth extends from the horizontal bar along the second longitudinal direction, and the plurality of comb teeth of the pixel electrode are inserted into the plurality of comb teeth of the common electrode between the comb teeth, and each comb tooth has a rectangular profile, wherein each comb tooth of the pixel electrode is adjacent to each comb tooth of the common electrode two by two.

Yet another aspect of the present invention provides an electrode arrangement structure in a pixel region of a lateral electric field liquid crystal display, comprising:

A comb-shaped common electrode includes a bar and a plurality of comb-teeth, wherein each comb-teeth extends from the bar along a first longitudinal direction; and each comb-teeth The contours of both sides of the ∠ are continuous; and

A comb-shaped pixel electrode, including a horizontal bar and a plurality of rectangular comb teeth, wherein each comb tooth extends from the horizontal bar along the second longitudinal direction, and the plurality of comb teeth of the pixel electrode are inserted in the Between the plurality of comb teeth of the common electrode, the contours of the two side walls of each comb tooth present a continuous ∠ shape, wherein each comb tooth of the pixel electrode is adjacent to each comb tooth of the common electrode two by two.

Description of drawings

FIG. 1 is a schematic cross-sectional view showing the rotation angle of liquid crystal molecules and the coloring phenomenon of blue light or yellow light.

FIG. 2 is a top view showing an electrode arrangement structure of a conventional IPS-LCD.

3A and 3B show the top view of the electrode arrangement structure of the IPS-LCD according to the first embodiment of the present invention.

3A and 3B show the top view of the electrode arrangement structure of the IPS-LCD according to the first embodiment of the present invention.

4A and 4D show the top view of the improved design of the electrode structure of the TFT substrate according to the first embodiment of the present invention.

5A and 5B show the top view of the electrode arrangement structure of the IPS-LCD according to the second embodiment of the present invention.

6A and 6B show the top view of the electrode arrangement structure of the IPS-LCD according to the third embodiment of the present invention.

7A and 7B show the top view of the electrode arrangement structure of the IPS-LCD according to the fourth embodiment of the present invention.

FIG. 8 shows a top view of the electrode arrangement structure of the IPS-LCD according to the fifth embodiment of the present invention.

Explanation of reference symbols

26～pixel area; 261, 262, 263, 264～sub-pixel area;

28～common electrode; 30～pixel electrode;

32～liquid crystal molecule; 34～gate line;

36～data line; 38～common electrode;

40～the first pixel electrode; 42～pixel area;

421, 422, 423, 424～sub-pixel area;

44～TFT element; 46～second pixel electrode.

Detailed ways

[first embodiment]

Please refer to FIG. 3A and FIG. 3B , which show the top view of the electrode arrangement structure of the IPS-LCD according to the first embodiment of the present invention. In the electrode arrangement structure of the IPS-LCD of the present invention, a comb-shaped common electrode 28 and a comb-shaped pixel electrode 30 are arranged in each pixel area 26, wherein the comb-shaped common electrode 28 is composed of a horizontal bar 28a and three comb teeth 28b . Between the three comb teeth 28 b , 28 c , 28 d , one pixel area 26 is divided into four sub-pixel areas 261 , 262 , 263 , 264 . The feature of the present invention is: the comb teeth 30b, 30c of the pixel electrode 30 are formed by connecting a plurality of positive trapezoids, so the contours of both sides of the comb teeth 30b, 30c present a continuous ∠ shape, wherein the short base length of each trapezoid is _D1 The relationship with the long base length D ₂ is D ₂ ≤ _{D 1} +50 μm.

When no voltage is applied, the liquid crystal molecules 32 are aligned along the direction of arrow A. Referring to FIG. Therefore, the long axes of the liquid crystal molecules 32 are parallel to the comb teeth 28 b , 28 c , 28 d of the common electrode 28 . When a voltage is applied, a transverse electric field is generated between the comb teeth 28b, 28c, 28d of the common electrode 28 and the comb teeth 30b, 30c of the pixel electrode 30, so that the liquid crystal molecules 32 rotate toward the direction of the electric field. Using the comb teeth 30b of the pixel electrode 28 as a distinction, the liquid crystal molecules 32a located in the first sub-pixel area 261 will rotate counterclockwise, and the rotation result is shown as the liquid crystal molecules 32a', while the liquid crystal molecules 32b located in the second sub-pixel area 262 It will rotate in a clockwise direction, and the result of the rotation is shown as liquid crystal molecules 32b', so the comb teeth 30b of the pixel electrode 30 become the boundary of the two blocks. The same situation also occurs in the third and fourth sub-pixel regions 263 , 264 . Since the outlines of the comb teeth 30 b and 30 c of the pixel electrode 30 are in a continuous ∠ shape, the generated transverse electric field also presents a certain angle of inclination, thereby affecting the rotation angle of the liquid crystal molecules 32 . In this way, with an appropriate ∠-shaped design, the rotation angle of the liquid crystal molecules 32 can be controlled, so that the rotation angle θ of the liquid crystal molecules 32 between the common electrode 28 and the pixel electrode 30 can be controlled at 0°～+60° or 0°. °～-60° to avoid the coloring phenomenon of blue light or yellow light.

In addition, the liquid crystal molecules located at the comb teeth 30b, 30c of the pixel electrode 30 (that is, the boundary of the two blocks) are squeezed by the liquid crystal molecules 32 with different rotation directions on both sides, which will cause them to be unable to rotate. A dark line is displayed on the pixel electrode 30 and the comb teeth 30b, 30c. However, since the pixel electrode 30 itself is designed to be opaque, dark lines are still formed after the voltage is applied, but the aperture ratio of the IPS-LCD will not be sacrificed. Moreover, if the pixel electrode 30 is manufactured with a transparent conductor material, the aperture ratio of the IPS-LCD can be further increased. Compared with the existing electrode structure design, the IPS-LCD of the present invention can adjust the rotation angle of the liquid crystal molecules 32 between the common electrode 28 and the pixel electrode 30, so as to ensure the display quality of the IPS-LCD, and can also solve the problem of double-block boundary In order to improve the aperture ratio of IPS-LCD in order to solve the dark line problem.

In the first embodiment of the present invention, the contours of the two sidewalls of the comb teeth 30b, 30c of the pixel electrode 30 can be designed in a continuous ∠ shape. As shown in FIG. 3A, the comb teeth 30b, 30c are formed by connecting a plurality of regular trapezoids. In addition, as shown in FIG. 3B , a rectangular block can also be added between the front and rear trapezoids, and then there is a straight line between the two ∠-shaped contours on the side walls of the comb teeth 30b and 30c.

The structural design of the pixel electrode and related improvements will be described below with respect to the TFT substrate of the IPS-LCD.

Please refer to FIG. 4A , which shows a top view of a first modified TFT substrate according to the first embodiment of the present invention. In a pixel area of the first improved design IPS-LCD, it includes a gate line 34 arranged horizontally, a data line 36 arranged vertically, a comb-shaped common electrode 38 and a comb-shaped first pixel electrode 40 . Among them, the comb common electrode 38 is composed of a horizontal bar 38a and three rectangular strip-shaped comb teeth 38b, 38c, 38d, and the comb-shaped first pixel electrode 40 is composed of a horizontal bar 40a and two rectangular strip-shaped combs. Teeth 40b, 40c, and the two comb teeth 40b, 40c of the first pixel electrode 40 are alternately inserted between the three comb teeth 38b, 38c, 38d of the common electrode 38, and a pixel area 42 is divided into four sub-pixel regions 421, 422, 423, 424. In addition, the gate of a TFT element 44 is made on the gate line 34, its drain electrode is connected to the horizontal bar 40a of the first pixel electrode 40, and its source electrode is connected to the extension region 36a of the data line 36, A channel is provided between the drain electrode and the source electrode.

In addition, a second pixel electrode 46 covers each comb tooth 40b, 40c of the first pixel electrode 40 via a protective layer (not shown). The second pixel electrode 46 is made of indium tin oxide (indium tin oxide, ITO) or other transparent conductive materials, and the contours of its two side walls can be defined to form a continuous ∠ shape by using lithographic etching technology, which can be regarded as composed of multiple A strip formed by trapezoids, where the relationship between the length D ₁ of the short base and the length D ₂ of the long base of the trapezoid is D ₂ ≤ D ₁ +50 μm. In this way, the ∠-shaped profile of the second pixel electrode 46 can control the rotation angle of the liquid crystal molecules, so as to avoid the coloring phenomenon of blue light or yellow light. Moreover, when the comb teeth 40b, 40c of the first pixel electrode 40 are made of opaque materials, although part of the liquid crystal molecules will be displayed as a dark line, this dark line is just above the comb teeth 40b, 40c of the first pixel electrode 40, so The aperture ratio of IPS-LCD will not be sacrificed. Even, covering the transparent second pixel electrode 46 on the opaque first pixel electrode 40 can further increase the aperture ratio of the IPS-LCD.

Please refer to FIG. 4B , which shows a top view of the TFT substrate of the second improved design of the first embodiment of the present invention. Compared with the design of the first embodiment, the second embodiment of the present invention exchanges the pattern of the comb teeth 40b, 40c of the first pixel electrode 40 with the pattern of the second pixel electrode 46, that is, the comb of the first pixel electrode 40 The teeth 40b, 40c are made into strips with a continuous ∠-shaped outline, and the second pixel electrode 46 is made into rectangular strips, which can also achieve the expected effect of the first embodiment.

Please refer to FIG. 4C , which shows the top view of the TFT substrate of the third improved design of the first embodiment of the present invention. Compared with the design of the second embodiment, in order to reduce the complexity and cost of the manufacturing process, the third embodiment of the present invention omits the fabrication of the second pixel electrode 46, and only makes the comb teeth 40b, 40c of the first pixel electrode 40 into Strips with continuous ∠-shaped contours can also avoid coloring.

Please refer to FIG. 4D , which shows a top view of the TFT substrate of the fourth improved design of the first embodiment of the present invention. Although the design of the third embodiment can reduce the complexity and cost of the manufacturing process, the comb teeth 40b, 40c of the opaque first pixel electrode 40 are made into strips with a continuous ∠-shaped outline, which occupies a large area and still reduces the cost. The risk of opening rate. In view of this, the fourth embodiment of the present invention omits the fabrication of the first pixel electrode 40, and only uses the transparent material ITO to fabricate the comb-shaped second pixel electrode 46, and fabricates the comb teeth 46b, 46c of the second pixel electrode 46 into a strip with a continuous ∠-shaped profile. In this way, not only can the coloring phenomenon be avoided, but also the aperture ratio of the IPS-LCD can be effectively increased.

[Second embodiment]

Please refer to FIG. 5A and FIG. 5B , which show the top view of the electrode arrangement structure of the IPS-LCD according to the second embodiment of the present invention. In the electrode arrangement structure of the IPS-LCD of the present invention, a comb-shaped common electrode 28 and a comb-shaped pixel electrode 30 are arranged in each pixel area 26, wherein the comb-shaped common electrode 28 is composed of a horizontal bar 28a and three comb teeth. 28b, 28c, 28d, and the comb-shaped pixel electrode 30 is composed of a horizontal bar 30a and two comb teeth 30b, 30c, and the two comb teeth 30b, 30c of the pixel electrode 30 are alternately inserted in the common electrode 28 between the three comb teeth 28b, 28c, 28d, so that one pixel area 26 is divided into four sub-pixel areas 261, 262, 263, 264. The feature of the present invention is that the comb teeth 30b, 30c of the pixel electrode 30 are formed by connecting multiple inverted trapezoids, wherein the relationship between the length D ₁ of the short base and the length D ₂ of the long base of each inverted trapezoid is D ₂ ≤ D ₁ +50 μm. In this way, the rotation angle θ of the liquid crystal molecules 32 between the common electrode 28 and the pixel electrode 30 can be controlled within 0°～+60° or 0°～-60°to avoid coloring phenomenon of blue light or yellow light.

In the second embodiment of the present invention, the contours of the two sidewalls of the comb teeth 30b, 30c of the pixel electrode 30 can be designed in a continuous inverted ∠ shape. As shown in FIG. 5A, the comb teeth 30b, 30c are formed by connecting multiple inverted trapezoids. In addition, as shown in Fig. 5B, a rectangular block can also be added between the front and rear inverted trapezoids, and then there is a straight line between the two inverted ∠-shaped outlines on the side walls of the comb teeth 30b, 30c. In addition, the design of the second embodiment of the present invention can be improved in relation to the structural design of the pixel electrode, as shown in the four improvement methods in FIGS. 4A to 4D , which will not be described here.

[Third embodiment]

Please refer to FIG. 6A and FIG. 6B , which show the top view of the electrode arrangement structure of the IPS-LCD according to the third embodiment of the present invention. The third embodiment of the present invention is to improve the electrode arrangement structure shown in FIG. 3 , by exchanging the strip-shaped outline of the common electrode 28 and the continuous ∠-shaped outline of the pixel electrode 30 . Therefore, the two comb teeth 30b, 30c of the pixel electrode 30 are elongated, while the three comb teeth 28b, 28c, 28d of the common electrode 28 are formed by connecting a plurality of positive trapezoids, so that the contours on both sides present a continuous ∠ type, wherein the relationship between the short base length D ₁ and the long base length D ₂ of each trapezoid is D ₂ ≤ _{D 1} +50 μm. In addition, according to this design principle, the comb teeth 28b, 28c, and 28d can be formed by connecting a plurality of positive trapezoids (as shown in FIG. 6A ), and the comb teeth 28b, 28c, and 28d can also be formed by connecting a plurality of inverted trapezoids (as shown in FIG. 6B). In addition, it is also possible to add a rectangular block between the front and rear trapezoids, and then there is a straight line between the two inverted ∠-shaped contours on the side walls of the comb teeth 28b, 28c, and 28d. In addition, regarding the improvements related to the structural design of the pixel electrodes, reference can be made to the four improvements shown in FIGS. 4A to 4D , which will not be described here.

[Fourth Embodiment]

Please refer to FIG. 7A and FIG. 7B , which show the top view of the electrode arrangement structure of the IPS-LCD according to the fourth embodiment of the present invention. The fourth embodiment of the present invention combines the designs of the aforementioned first embodiment, second embodiment, and third embodiment, and simultaneously designs the comb teeth of the common electrode 28 and the pixel electrode 30 into a continuous ∠-shaped profile, but when the common electrode When the three comb teeth 28b, 28c, 28d of 28 are formed by connecting multiple inverted trapezoids, the two comb teeth 30b, 30c of the pixel electrode 30 are formed by connecting multiple regular trapezoids, the result is shown in FIG. 7A . Conversely, when the three comb teeth 28b, 28c, 28d of the common electrode 28 are formed by connecting multiple positive trapezoids, the two comb teeth 30b, 30c of the pixel electrode 30 are formed by connecting multiple inverted trapezoids, the result is as follows Figure 7B.

In addition, a rectangular block can also be added between the front and rear trapezoids, and then there is a straight line between the two ∠-shaped contours on the side walls of the comb teeth. In addition, regarding the improvements related to the structural design of the pixel electrodes, reference can be made to the four improvements shown in FIGS. 4A to 4D , which will not be described here.

[Fifth Embodiment]

Please refer to FIG. 8 , which shows a top view of the electrode arrangement structure of the IPS-LCD according to the fifth embodiment of the present invention. The fifth embodiment of the present invention is to further improve the design of the fourth embodiment. Not only the comb teeth of the common electrode 28 and the pixel electrode 30 are formed of a positive trapezoid or an inverted trapezoid, but also the comb teeth 28b, 28c, 28d of the common electrode 28 The number of trapezoids is not equal to the number of trapezoids of the comb teeth 30 b and 30 c of the pixel electrode 30 . For example, a positive trapezoid of the comb teeth of the pixel electrode 30 will be adjacent to two inverted trapezoids of the comb teeth of the common electrode 28, or even more than three inverted trapezoids, so that the comb teeth of the pixel electrode 30 are aligned with the common electrode 28. The spacing of the comb teeth produces irregular changes, which in turn produces an inhomogeneous electric field.

As far as the upper area of the second sub-pixel region 262 is concerned, after the voltage is applied, the electric field intensity near the tip of the ∠-shaped outline of the comb teeth 28c of the common electrode 28 is the highest (here the comb teeth 28c and the comb teeth 30b The distance between the comb teeth 28c and the comb teeth 30b is the lowest, and the electric field intensity in the region of the parallel side walls of the comb teeth 28c and the comb teeth 30b is the lowest (the distance between the comb teeth 28c and the comb teeth 30b is the largest here), so the distance between the comb teeth 28c and the comb teeth 30b The electric field intensity is not uniform, and the electric field intensity is not equal to zero for space differential (called gradient). When the applied voltage gradually increases to a certain value (which will be smaller than the general driving voltage value), the liquid crystal molecules 32a at the higher electric field strength will start to rotate first, while the liquid crystal molecules 32b and 32c at the lower electric field strength will be static shape. Subsequently, when the rotation angle of the liquid crystal molecules 32a becomes larger as time increases, the elastic distorted energy (elastic distorted energy) generated by the liquid crystal molecules 32a will be transmitted upward or downward to the positions of the liquid crystal molecules 32b and 32c, and then combined Here, the low electric field intensity can achieve the effect of rotating the liquid crystal molecules 32b, 32c. In the fifth embodiment of the present invention, the rotation angle range of the liquid crystal molecules 32 is: 0°<θ<20°. From the above, it can be seen that the design of the non-uniform electric field can reduce the effective initial voltage value of the liquid crystal molecules 32b, 32c, and can also reduce the driving voltage value of the IPS-LCD, thereby shortening the switching time of the IPS-LCD.

Although the present invention has been disclosed above in conjunction with a preferred embodiment, it is not intended to limit the present invention. Those skilled in the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection should be determined by what is defined in the appended claims.

Claims (39)

1. the electrode arranging structure in the pixel region of a LCD with transverse electric field comprises:

One comb shape common electrode comprises the broach of a whippletree and a plurality of rectangular strips, and wherein each broach is along first longitudinal extension from this whippletree; And

One comb shape pixel electrode, comprise a whippletree and a plurality of broach, wherein each broach be from this whippletree along second longitudinal extension, and a plurality of broach of this pixel electrode are inserted between a plurality of broach of this common electrode, and the two side profile of each broach presents continuous ∠ type

Wherein each broach of each broach of this pixel electrode and this common electrode is adjacent in twos.

2. electrode arranging structure as claimed in claim 1, wherein each broach of this pixel electrode is connected and composed by a plurality of trapezoids.

3. electrode arranging structure as claimed in claim 2, the wherein short end length D of each trapezoid ₁With long end length D ₂Between the pass be: D ₂≤ D ₁+ 50 μ m.

4. electrode arranging structure as claimed in claim 2 wherein is provided with a pane between this two adjacent trapezoid.

5. electrode arranging structure as claimed in claim 1, wherein each broach of this pixel electrode is to be fallen trapezoidal institute and connected and composed by a plurality of.

6. electrode arranging structure as claimed in claim 5, wherein each falls trapezoidal short end length D ₁With long end length D ₂Between the pass be: D ₂≤ D ₁+ 50 μ m.

7. electrode arranging structure as claimed in claim 5, wherein this two adjacent falling is provided with a pane between trapezoidal.

8. electrode arranging structure as claimed in claim 1, wherein the broach of this pixel electrode is made of indium tin oxide.

9. electrode arranging structure as claimed in claim 1, wherein each broach of this pixel electrode comprises:

One first electrode layer presents rectangular profile;

One the second electrode lay be arranged at the top of this first electrode layer, and the two side profile of this second electrode lay presents continuous ∠ type; And

One protective seam is arranged between this first electrode layer and this second electrode lay.

10. electrode arranging structure as claimed in claim 9, wherein this second electrode lay is made of indium tin oxide.

11. electrode arranging structure as claimed in claim 1, wherein each broach of this pixel electrode comprises:

One first electrode layer, its two side profile presents continuous ∠ type;

One the second electrode lay be arranged at the top of this first electrode layer, and this second electrode lay presents rectangular profile; And

One protective seam is arranged between this first electrode layer and this second electrode lay.

12. electrode arranging structure as claimed in claim 11, wherein this second electrode lay is made of indium tin oxide.

13. the electrode arranging structure in the pixel region of a LCD with transverse electric field includes:

One comb shape common electrode comprises a whippletree and a plurality of broach, and wherein each broach is along first longitudinal extension from this whippletree; And the two side profile of each broach presents continuous ∠ type; And

One comb shape pixel electrode comprises a whippletree and a plurality of broach, wherein each broach be from this whippletree along second longitudinal extension, and a plurality of broach of this pixel electrode are inserted between a plurality of broach of this common electrode, and each broach is rectangular profile,

Wherein each broach of each broach of this pixel electrode and this common electrode is adjacent in twos.

14. electrode arranging structure as claimed in claim 13, wherein each broach of this common electrode is connected and composed by a plurality of trapezoid.

15. electrode arranging structure as claimed in claim 14, the wherein short end length D of each trapezoid ₁With long end length D ₂Between the pass be: D ₂≤ D ₁+ 50 μ m.

16. electrode arranging structure as claimed in claim 14 wherein is provided with a pane between this two adjacent trapezoid.

17. electrode arranging structure as claimed in claim 13, wherein each broach of this common electrode is to be fallen trapezoidal institute and connected and composed by a plurality of.

18. electrode arranging structure as claimed in claim 17, wherein each falls trapezoidal short end length D ₁With long end length D ₂Between the pass be: D ₂≤ D ₁+ 50 μ m.

19. electrode arranging structure as claimed in claim 17, wherein this two adjacent falling is provided with a pane between trapezoidal.

20. electrode arranging structure as claimed in claim 17, wherein the broach of this common electrode is made of indium tin oxide.

21. require 13 described electrode arranging structures as profit, wherein each broach of this common electrode comprises:

One first electrode layer presents rectangular profile;

One the second electrode lay be arranged at the top of this first electrode layer, and the two side profile of this second electrode lay presents continuous ∠ type; And

One protective seam is arranged between this first electrode layer and this second electrode lay.

22. electrode arranging structure as claimed in claim 23, wherein this second electrode lay is made of indium tin oxide.

23. electrode arranging structure as claimed in claim 14, wherein each broach of this common electrode comprises:

One first electrode layer, its two side profile presents continuous ∠ type;

One the second electrode lay is the top that is arranged at this first electrode layer, and this second electrode lay is to present rectangular profile; And

One protective seam is to be arranged between this first electrode layer and this second electrode lay.

24. electrode arranging structure as claimed in claim 23, wherein this second electrode lay is made of indium tin oxide.

25. the electrode arranging structure in the pixel region of a LCD with transverse electric field includes:

One comb shape common electrode comprises a whippletree and a plurality of broach, and wherein each broach is along first longitudinal extension from this whippletree; And the two side profile of each broach presents continuous ∠ type; And

One comb shape pixel electrode, the broach that comprises a whippletree and a plurality of rectangular strips, wherein each broach be from this whippletree along second longitudinal extension, and a plurality of broach of this pixel electrode are inserted between a plurality of broach of this common electrode, and the two side profile of each broach presents continuous ∠ type

Wherein each broach of each broach of this pixel electrode and this common electrode is adjacent in twos.

26. electrode arranging structure as claimed in claim 25, wherein each broach of this common electrode is connected and composed by a plurality of trapezoid, and each broach of this pixel electrode is to be fallen trapezoidal institute and connected and composed by a plurality of.

27. electrode arranging structure as claimed in claim 26, wherein each trapezoidal short end length D ₁With long end length D ₂Between the pass be: D ₂≤ D ₁+ 50 μ m.

28. electrode arranging structure as claimed in claim 26 wherein is provided with a pane between this two adjacent trapezoid, and this two adjacent falling is provided with a pane between trapezoidal.

29. electrode arranging structure as claimed in claim 26, wherein the trapezoid number of each broach of this common electrode be not equal to this pixel electrode each broach fall trapezoidal number.

30. electrode arranging structure as claimed in claim 29 wherein produces an electric-force gradient, so that form non-uniform electric field between the broach of the broach of this common electrode and this pixel electrode between the broach of the broach of this common electrode and this pixel electrode.

31. electrode arranging structure as claimed in claim 29, wherein the liquid crystal molecule rotation angle range between the broach of the broach of this common electrode and this pixel electrode is: 0 °＜θ＜20 °.

32. electrode arranging structure as claimed in claim 25, wherein each broach of this common electrode is to be fallen trapezoidal institute and connected and composed by a plurality of, and each broach of this pixel electrode is connected and composed by a plurality of trapezoid.

33. electrode arranging structure as claimed in claim 32, wherein each trapezoidal short end length D ₁With long end length D ₂Between the pass be: D ₂≤ D ₁+ 50 μ m.

34. electrode arranging structure as claimed in claim 32 wherein is provided with a pane between this two adjacent trapezoid, and this two adjacent falling is provided with a pane between trapezoidal.

35. electrode arranging structure as claimed in claim 32, wherein each broach of this common electrode fall trapezoidal number be not equal to this pixel electrode each broach just fall trapezoidal number.

36. electrode arranging structure as claimed in claim 35 wherein produces an electric-force gradient, so that form non-uniform electric field between the broach of the broach of this common electrode and this pixel electrode between the broach of the broach of this common electrode and this pixel electrode.

37. electrode arranging structure as claimed in claim 35, wherein the liquid crystal molecule rotation angle range between the broach of the broach of this common electrode and this pixel electrode is: 0 °＜θ＜20 °.

38. electrode arranging structure as claimed in claim 25, wherein the broach of this common electrode is made of indium tin oxide.

39. electrode arranging structure as claimed in claim 25, wherein the broach of this pixel electrode is made of indium tin oxide.

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