CN100388406C - Plasma display panel with improved brightness - Google Patents

Abstract

A plasma display panel comprises a first substrate and a second substrate; multiple barrier ribs forming multiple discharge units between the first and second substrates; the plurality of address electrodes are located on the second substrate, wherein each discharge unit passes through a corresponding address electrode, each address electrode comprises a plurality of main electrodes and at least one auxiliary electrode, the auxiliary electrode is connected with two adjacent main electrodes in each discharge unit, each address electrode and the adjacent address electrode are connected outside a display area of the plasma display panel to form a shared address electrode, and each shared address electrode is not connected with each other.

Description

plasma display panel

technical field

The invention relates to an AC plasma display panel, in particular to a main electrode structure of the AC plasma display panel.

Background technique

Plasma display (Plasma Display Panel, referred to as PDP) is a thin display, its main feature is that it can achieve a super-sized, ultra-thin screen, to save a lot of screen space. The light emitting principle of the plasma display is similar to that of a fluorescent lamp. Inert gas is injected into the vacuum glass tank, and the inert gas is pressurized by voltage to generate a plasma effect and emit ultraviolet rays. At this time, the ultraviolet rays are irradiated on the glass tank wall surface. Fluorescent material, which can make the fluorescent material excite red, green or blue visible light. In this way, the screen of a plasma display is composed of hundreds of thousands of units that can emit light by themselves, and each light-emitting unit contains small light bulbs of three colors: red, green, and blue (R, G, B). And produce different colors, and then form the picture we see.

Please refer to FIG. 1 , which shows a schematic diagram of a conventional plasma display 10 . The structure of the existing plasma display 10 is mainly composed of an upper glass substrate 12 and a lower glass substrate 14 arranged in parallel, and there is a gap between the upper and lower glass substrates 12, 14, which is filled with an inert gas (such as: Ne, Xe ) to form a discharge space 16. A plurality of sets of lateral electrodes are arranged on the surface of the upper glass substrate 12, and each set of lateral electrodes includes a first sustaining electrode (sustaining electrode) 18 and a second sustaining electrode 20, and the first and second sustaining electrodes 18, 20 are respectively It includes an extension electrode 181, 201 and an auxiliary electrode (bus electrode) 182, 202. In addition, the surface of the upper glass substrate 12 includes a dielectric layer 24 covering the lateral electrodes, and a passivation layer 26 covering the dielectric layer 24 .

The lower glass substrate 14 is provided with a plurality of barrier ribs (barrier ribs) 28, which are arranged in parallel on the surface of the lower glass substrate 14, and are used to separate the discharge space 16 into a plurality of discharge space groups, wherein each discharge space group is defined as It includes a red discharge space 16R, a green discharge space 16G and a blue discharge space 16B. In addition, the plasma display 10 also includes a plurality of vertical electrodes perpendicular to the first sustain electrode 18 and the second sustain electrode 20, which are arranged on the surface of the lower glass substrate 14 between the two barrier ribs 28, and are used as address electrodes. )twenty two.

In addition, a red fluorescent layer 29R is coated on the surface of the lower glass substrate 14 and the side walls of the barrier ribs 28 in the red discharge space 16R; a green fluorescent layer 29G is coated on the surface of the lower glass substrate 14 and the barrier ribs in the green discharge space 16G. On the side wall of the wall 28; a blue fluorescent layer 29B is coated on the surface of the lower glass substrate 14 and the side wall of the barrier wall 28 in the blue discharge space 16B.

The operation mode of the existing plasma display 10 is to pass a driving voltage between the electrodes, such as applying a voltage to the first and second sustain electrodes 18, 20 and address electrodes 22, which will form a voltage between the two electrodes in the discharge space 16. A plasma, and as the applied voltage increases, the range of the plasma will expand to the positions of the first and second sustain electrodes 18, 20, so that the high voltage will dissociate the inert gas in the discharge space 16 to generate ultraviolet light, Then the ultraviolet light will hit the red, green and blue fluorescent layers 29R, 29G and 29B to emit three colors of red, blue and green that are visible to ordinary people. After the three primary colors are mixed in different proportions, the visible light is transmitted through the upper glass substrate 12 into the eyes of ordinary people.

Please refer to FIG. 2, which is a plan view showing the structure of a conventional plasma display. A plurality of barrier ribs 28 is an elongated structure, and is arranged on the lower glass substrate in a manner parallel to each other, however, the existing linear address electrodes 22, due to their uniform charge distribution, a discharge cell 161 is easy to generate a discharge cell 161 during discharge. The phenomenon that charges go to the adjacent discharge unit 162 through the gap will cause interference among display cells, thereby affecting the display quality of the plasma display.

U.S. Patent No. 6,479,932 discloses a novel electrode design for an AC plasma display panel, which uses an addressing electrode structure, which has a wider width in the discharge portion and a narrower width in the non-discharge portion, so as to Improve the driving margin (Driving Margin), but this kind of electrode design is prone to disconnection. If the disconnection occurs, point defects will be generated, resulting in a decrease in yield.

Contents of the invention

In view of this, in order to solve the above problems, the object of the present invention is to provide a plasma display panel with barrier-type address electrodes, by having a plurality of main electrodes in the discharge cells, and each main electrode has an auxiliary electrode in the discharge area. The electrodes are connected to each main electrode, and the barrier-type address electrodes formed in this way have a large plasma control range because of the auxiliary electrodes in the discharge area, which can improve the driving boundary of the plasma display, and because there are multiple main electrodes and auxiliary electrodes. The connection can overcome the problem in the prior art that an open circuit is caused by a broken line of the addressing electrode, and defects are formed that affect the yield of the display.

To achieve the above object, the present invention provides a plasma display panel, comprising: a first substrate and a second substrate; a plurality of barrier ribs form a plurality of discharge cells between the first substrate and the second substrate; a plurality of main electrodes are located On the second substrate, each discharge cell has a plurality of main electrodes; and at least one auxiliary electrode is located on the second substrate, and the auxiliary electrode is connected to two adjacent main electrodes in the discharge cell, wherein the plurality of main electrodes and the auxiliary electrodes An address electrode is formed.

To achieve the above object, the present invention further provides a plasma display panel, comprising: a first substrate and a second substrate; a plurality of barrier ribs forming a plurality of discharge cells between the first substrate and the second substrate; a plurality of main electrodes Located on the second substrate, and each discharge cell has a plurality of main electrodes; and at least one auxiliary electrode is located on the second substrate, the auxiliary electrode is connected to two adjacent main electrodes in the discharge cell, and a plurality of main electrodes and auxiliary electrodes constitute An address electrode, wherein the address electrode and adjacent address electrodes are connected outside the display area of the plasma display panel to form a shared address electrode, wherein the shared address electrodes are not connected to each other.

Description of drawings

FIG. 1 shows a schematic diagram of a conventional plasma display.

FIG. 2 shows a plan view of the structure of a conventional plasma display.

FIG. 3A shows a plan view of the structure of barrier ribs and electrodes of the plasma display according to the first embodiment of the present invention.

FIG. 3B shows a plan view of another electrode structure of the plasma display according to the first embodiment of the present invention.

FIG. 3C shows a plan view of yet another electrode structure of the plasma display according to the first embodiment of the present invention.

FIG. 4 shows a plan view of the structure of barrier ribs and electrodes of a plasma display according to a second embodiment of the present invention.

FIG. 5 shows a plan view of the structure of barrier ribs and electrodes of a plasma display according to a third embodiment of the present invention.

FIG. 6 shows a plan view of the structure of barrier ribs and electrodes of a plasma display according to a fourth embodiment of the present invention.

FIG. 7 shows a plan view of the structure of barrier ribs and electrodes of a plasma display according to a fifth embodiment of the present invention.

FIG. 8 shows a plan view of the structure of barrier ribs and electrodes of a plasma display according to a sixth embodiment of the present invention.

Explanation of reference numbers

current technology

Existing Plasma Display ~ 10; Front Panel ~ 12;

Rear panel ~ 14; Discharge space ~ 16;

The first sustaining electrode ~ 18; The second sustaining electrode ~ 20;

Extension electrode ~ 181, 201; Auxiliary electrode ~ 182, 202;

Dielectric layer ~ 24; Protective layer ~ 26;

Barrier wall ~ 28; Red discharge space ~ 16R;

Green discharge space ~ 16G; Blue discharge space ~ 16B;

Addressing electrode ~ 22; Red fluorescent layer ~ 29R;

Green fluorescent layer ~ 29G; Blue fluorescent layer ~ 29B;

Discharge unit ~ 161; Adjacent discharge unit ~ 162;

The technology of the present invention:

Barrier wall ~ 302, 402, 602, 802;

Rectangular discharge unit ~ 304;

Discharge unit ~ 504, 704, 718;

Column electrodes ~ 306, 406, 506, 608, 706, 808;

Main electrode ~ 716, 816, 818;

The first main electrode ~ 308, 408, 508, 610, 708, 810;

Second main electrode ~ 310, 410, 510, 612, 710, 812;

Auxiliary electrode ~ 312, 412, 512, 614, 712, 814;

Hexagonal discharge unit ~ 404, 604, 804;

Linear barrier wall ~ 502, 702;

Dark area ~ 606, 806;

Shared addressing electrodes ~ 720 , 820 .

Detailed ways

first embodiment

Please refer to FIG. 3 . FIG. 3 shows a plan view of the barrier ribs and electrode structure of the plasma display according to the first embodiment of the present invention. The plasma display of the present invention includes a front panel and a rear panel, and a plurality of barrier walls 302 are formed on the rear panel, and a plurality of enclosed rectangular discharge cells 304 are formed between the rear panel and the front panel. In the present invention, the front plate and the rear plate are glass substrates.

As shown in FIG. 3A , a plurality of column electrodes 306 are formed on the front panel and extend along the X direction on the lateral sides of the rectangular barrier walls 302 . A plurality of barrier-type address electrodes are formed on the rear plate, and each closed rectangular discharge cell 304 passes through a barrier-type address electrode, and the barrier-type address electrodes include a plurality of main electrodes extending along the Y direction and at least one auxiliary electrode. Electrodes, in this embodiment, the multiple main electrodes are denoted by the first main electrode 308 and the second main electrode 310 . In the discharge cell 304, at least one auxiliary electrode 312 is included between the first main electrode 308 and the second main electrode 310 to connect the first main electrode 308 and the second main electrode 310, and the auxiliary electrode 312 can be connected to the first main electrode 310 in any way. The main electrode 308 and the second main electrode 310 are, for example, in the manner shown in FIG. 3A , and the auxiliary electrode 312 is extended along the X direction to connect the first main electrode 308 and the second main electrode 310, as shown in FIG. 3B . The oblique direction connects the first main electrode 308 and the second main electrode 310 . In addition, as shown in FIG. 3C , the auxiliary electrode 312 can also be an electrode with a certain width to connect two adjacent main electrodes 308 and 310 . The auxiliary electrode 312 is located in the discharge part of the discharge unit. Since the electrode configuration has a large range for controlling the plasma, the preferred discharge efficiency can be obtained. The distance between the auxiliary electrode 312 and the barrier wall 302 is preferably 20 μm to 50 μm.

second embodiment

Please refer to FIG. 4 . FIG. 4 shows a plan view of the structure of barrier ribs and electrodes of a plasma display according to a second embodiment of the present invention. The plasma display of the present invention includes a front panel and a rear panel, and a plurality of barrier walls 402 are formed on the rear panel, and a plurality of enclosed hexagonal discharge cells 404 are formed between the rear panel and the front panel. In the present invention, the front plate and the rear plate are glass substrates.

As shown in FIG. 4 , the enclosed hexagonal discharge cells 404 are arranged in the form of triangular pixels. In addition, a column electrode 406 is formed on the front plate to extend along the X direction on the hypotenuse of the hexagonal barrier wall 402, and each closed rectangular discharge cell 404 passes through a barrier-type address electrode, and the barrier-type address electrode includes A plurality of main electrodes extending along the Y direction and at least one auxiliary electrode. In this embodiment, the plurality of main electrodes are represented by the first main electrode 408 and the second main electrode 410. The first main electrode 408 and the second main electrode 410 The zigzag electrode substantially extends along the Y direction and is composed of a plurality of straight segments extending along the third direction and the fourth direction, wherein each straight segment spans two adjacent discharge cells.

In each discharge cell 404, at least one auxiliary electrode 412 is included between the first main electrode 408 and the second main electrode 410 to connect the first main electrode 408 and the second main electrode 410, and the auxiliary electrode 412 can be connected in any way Two adjacent main electrodes 408 and 410 . The auxiliary electrode 412 is located in the discharge part of the hexagonal discharge unit 404. Because it has a large plasma control range, it can obtain the best discharge efficiency. The distance between the auxiliary electrode 312 and the barrier wall 302 is preferably 20 μm to 50 μm.

third embodiment

Please refer to FIG. 5 . FIG. 5 shows a plan view of barrier ribs and electrode structures of a plasma display according to a third embodiment of the present invention. The plasma display of the present invention includes a front panel and a rear panel. A plurality of linear barrier ribs 502 are formed on the rear panel and are separated into a plurality of discharge cells 504 extending along the Y direction and X direction between the rear panel and the front panel. In the present invention, the front plate and the rear plate are glass substrates.

As shown in Figure 5, a plurality of linear column electrodes 506 are formed on the front plate and extend along the X direction, and a plurality of barrier-type address electrodes are formed on the rear plate, wherein each discharge cell 504 passes through a barrier-type address electrode The barrier-type address electrodes include a plurality of main electrodes extending along the Y direction and at least one auxiliary electrode. In this embodiment, the plurality of main electrodes are represented by the first main electrode 508 and the second main electrode 510. In the discharge cell At least one auxiliary electrode 512 is included between the first main electrode 508 and the second main electrode 510 to connect the first main electrode 508 and the second main electrode 510, and the auxiliary electrode 512 can be connected to two adjacent main electrodes in any manner. The auxiliary electrode 512 is located in the discharge part of the discharge unit 504. Due to the large plasma control range, the preferred discharge efficiency can be obtained. The distance between the auxiliary electrode 512 and the barrier wall 502 is preferably 20 μm to 50 μm.

Fourth embodiment

Please refer to FIG. 6 . FIG. 6 shows a plan view of barrier ribs and electrode structures of a plasma display according to a fourth embodiment of the present invention. The plasma display of the present invention includes a front plate and a rear plate, a plurality of hexagonal barrier walls 602 are formed on the rear plate, and extend along a Y direction between the rear plate and the front plate to form a plurality of hexagonal discharge cells. 604, and arranged along the flat Y direction, between each discharge unit 616 and the adjacent discharge unit 618 in the Y direction, there is a dark area 606 connected to the above two discharge units 616, 618, and each discharge unit 604 corresponds to the adjacent row Between the two discharge cells 616, 618 of the. In the present invention, the front plate and the rear plate are glass substrates.

As shown in FIG. 6, a plurality of column electrodes 608 are formed on the front plate and extend along the Y direction on the hypotenuse of the hexagonal barrier rib 602, and a plurality of barrier-type address electrodes are formed on the rear plate, wherein each discharge The unit has a barrier-type address electrode, and its barrier-type address electrode includes a plurality of main electrodes extending along the Y direction and at least one auxiliary electrode. In this embodiment, the plurality of main electrodes are the first main electrode 610 and the second main electrode 610 The electrode 612 indicates that in the discharge cell, at least one auxiliary electrode 614 is included between the first main electrode 610 and the second main electrode 612 to connect the first main electrode 610 and the second main electrode 612, and the auxiliary electrode 312 can be in any form Connect two adjacent main electrodes. The auxiliary electrode 614 is located in the discharge part of the discharge unit 604. Due to the large plasma control range, the preferred discharge efficiency can be obtained. The distance between the auxiliary electrode 614 and the barrier wall 602 is preferably 20 μm to 50 μm.

fifth embodiment

Please refer to FIG. 7 . FIG. 7 shows a plan view of a structure of barrier ribs and electrodes of a plasma display according to a fifth embodiment of the present invention. The plasma display of the present invention comprises a front plate and a rear plate, and a plurality of linear barrier walls 702 are formed on the rear plate, and extend along a Y direction between the rear plate and the front plate and separate into a plurality of discharge cells 704 in the X direction. . In the present invention, the front plate and the rear plate are glass substrates.

As shown in FIG. 7, a plurality of linear column electrodes 706 are formed on the front plate and extend along the X direction, and a plurality of barrier-type address electrodes are formed on the rear plate, wherein each discharge cell passes through a barrier-type address electrode, Its barrier-type address electrodes include a plurality of main electrodes extending along the Y direction and at least one auxiliary electrode. In this embodiment, the plurality of main electrodes are represented by the first main electrode 708 and the second main electrode 710. In the discharge cell 704 At least one auxiliary electrode 712 is included between the first main electrode 708 and the second main electrode 710 to connect the first main electrode 708 and the second main electrode 710, and the auxiliary electrode 712 can be connected to two adjacent main electrodes in any manner. The auxiliary electrode 712 is located in the discharge part of the discharge unit 704. Due to the large plasma control range, the preferred discharge efficiency can be obtained. The distance between the auxiliary electrode 712 and the barrier wall 702 is preferably 20 μm to 50 μm. The barrier-type address electrodes 714 in the discharge cells and the barrier-type address electrodes 716 in the discharge cells 718 adjacent to the discharge cells along the X direction are connected outside the display area of the plasma display panel to form a shared address electrode 720, wherein each share The address electrodes are not connected to each other.

Sixth embodiment

Please refer to FIG. 8 . FIG. 8 shows a plan view of a barrier rib and an electrode structure of a plasma display according to a sixth embodiment of the present invention. The plasma display of the present invention includes a front plate and a rear plate, a plurality of barrier walls 802 are formed on the rear plate, and extend along a Y direction between the rear plate and the front plate to form a plurality of hexagonal discharge cells 804, and Each discharge cell has a dark area 806 communicating with each other along the Y direction. In the present invention, the front plate and the rear plate are glass substrates.

As shown in FIG. 8, a plurality of column electrodes 808 are formed on the front plate and extend along the hypotenuses of the hexagon, and a plurality of barrier-type address electrodes are formed on the rear plate, wherein each discharge cell passes through a barrier-type address electrode. The electrode, whose barrier-type address electrode includes a plurality of main electrodes extending along the Y direction and at least one auxiliary electrode. In this embodiment, the plurality of main electrodes are represented by the first main electrode 810 and the second main electrode 812. Among them, at least one auxiliary electrode 814 is included between the first main electrode 810 and the second main electrode 812 to connect the first main electrode 810 and the second main electrode 812, and the auxiliary electrode 814 can be connected to two adjacent main electrodes in any manner. The auxiliary electrode 814 is located in the discharge part of the discharge unit. Due to the large plasma control range, the preferred discharge efficiency can be obtained. The distance between the auxiliary electrode 814 and the barrier wall 802 is preferably 20 μm to 50 μm. The barrier-type address electrodes 816 in the discharge cells and the barrier-type address electrodes of the adjacent discharge cells along the 45° direction are connected outside the display area of the plasma display panel to form a shared address electrode 820, wherein the shared address electrodes are not connected to each other. connect.

The present invention is characterized in that the plasma display panel forms a barrier-type address electrode structure, by passing through a plurality of main electrodes in the discharge cell, and each main electrode is connected to each other by forming an auxiliary electrode in the discharge area, the barrier-type addressing formed in this way The electrodes, because there are auxiliary electrodes in the discharge area, have a larger plasma control range, which can improve the driving boundary of the plasma display, and have a plurality of main electrodes connected to each other with auxiliary electrodes, which can overcome the problems caused by the disconnection of the address electrodes in the prior art. Causes an open circuit, and the resulting defects affect the yield of the display.

Although the present invention has been disclosed above with preferred embodiments, 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, so the protection scope of the present invention It shall prevail as defined in the appended claims.

Claims (14)

1. A plasma display panel, comprising: a first substrate and a second substrate; A plurality of barrier ribs form a plurality of discharge cells between the first substrate and the second substrate; A plurality of address electrodes are located on the second substrate, wherein each discharge cell passes through a corresponding address electrode, each address electrode includes a plurality of main electrodes, and at least one auxiliary electrode, and in each discharge cell The auxiliary electrode is connected to two adjacent main electrodes, wherein each address electrode and the adjacent address electrode are connected outside the display area of the plasma display panel to form a shared address electrode, and each shared address electrode is not connected to each other. connect. 2. The plasma display panel as claimed in claim 1, wherein the first substrate and the second substrate are glass substrates. 3. The plasma display panel as claimed in claim 1, wherein the auxiliary electrode is 20 μm-50 μm away from the barrier wall. 4. The plasma display panel as claimed in claim 1, wherein the main electrode and the auxiliary electrode are perpendicular to each other. 5. The plasma display panel as claimed in claim 1, wherein the main electrode and the auxiliary electrode form an acute angle. 6. The plasma display panel as claimed in claim 1, wherein the barrier ribs are rectangular barrier ribs. 7. The plasma display panel as claimed in claim 6, wherein the plasma display panel further comprises a plurality of column electrodes extending along a first direction on the rectangular barrier wall. 8. The plasma display panel as claimed in claim 1, wherein the barrier ribs are hexagonal barrier ribs, and the discharge cells are arranged in a triangular arrangement. 9. The plasma display panel as claimed in claim 8, wherein each main electrode comprises a zigzag main electrode substantially extending along the second direction formed by a plurality of straight line segments extending along a third direction and a fourth direction. Electrodes, wherein each straight line segment spans two adjacent discharge cells. 10. The plasma display panel as claimed in claim 8, wherein the plasma display panel further comprises a plurality of column electrodes extending substantially along a first direction on the hexagonal barrier ribs. 11. The plasma display panel as claimed in claim 1, wherein the barrier ribs are linear and extend along a second direction. 12. The plasma display panel as claimed in claim 11, wherein the plasma display panel further comprises a plurality of column electrodes extending along a first direction. 13. The plasma display panel as claimed in claim 1, wherein the discharge cells are hexagonal and arranged in a parallel direction, and there is a dark area connecting the two discharge cells between each discharge cell and the adjacent discharge cells in the row direction. cells, and each discharge cell corresponds to between two discharge cells in adjacent columns. 14. The plasma display panel as claimed in claim 13, wherein the plasma display panel further comprises a plurality of column electrodes, wherein the column electrodes comprise a plurality of first line segments on the barrier ribs and a first line segment parallel to the column direction Two line segments, extending roughly along the column direction.

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