CN1547235A - Positioning structure of display panel - Google Patents

Abstract

The invention discloses a positioning structure of a display panel. Positioning structures which can be interlocked with each other are respectively arranged on the opposite surfaces of two display panels, so that the two display panels can be accurately aligned when packaged.

Description

The positioning structure of the display board

field of invention

The invention relates to a plasma display panel, especially a positioning structure of the display panel.

existing technology

The plasma display panel is a kind of thin display, and its main feature is that it can produce super-sized and ultra-thin screens to save a lot of screen space. The luminous principle of the plasma display is similar to that of a fluorescent lamp. Inert gas is injected into a vacuum glass tank, and the inert gas generates plasma effect by applying voltage to the inert gas to emit ultraviolet rays. When the fluorescent substance on the inner surface of the groove is removed, the fluorescent substance can be excited to emit 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 tiny bulbs of three colors: red, green, and blue (R, G, B). Clever combination produces different colors, and then forms the displayed picture.

As shown in Figure 1, the plasma display includes a front plate 100 and a rear plate 102, but when the front plate 100 and the rear plate 102 are packaged at high temperature, the softening of the packaging material 104 causes the front plate 100 and the rear plate 102 Relative slippage, or due to improper control of the alignment and assembly process, alignment errors are prone to occur.

Contents of the invention

Therefore, in order to solve the above problems, the object of the present invention is to provide a positioning structure of the display panel, so as to improve the alignment error of the plasma display panel and increase the packaging accuracy.

In order to accomplish the purpose of the above invention, the present invention provides a positioning structure of a display panel, including: a first display panel; a first positioning structure, which is located on the non-display area of the first display panel, wherein the first positioning The structure includes at least two first protrusions and a recess formed between the first protrusions; a second display panel opposite to the first display panel; and a second positioning structure pressed on the first display panel. On the surface of the second display panel opposite to the first display panel, the second positioning structure includes at least a pair of second protrusions corresponding to the recesses of the first positioning structure, so that the first positioning structure Fitting with the second positioning structure.

Description of drawings

In order to make the above objects, features, and advantages of the present invention more comprehensible, several preferred embodiments will be described in detail below with reference to the accompanying drawings.

Fig. 1 shows a sectional view of a conventional plasma display panel.

FIG. 2 shows a plan view of the first positioning structure of the display panel according to the first embodiment of the present invention.

Fig. 3 shows a sectional view along 3-3' of the first embodiment of the present invention.

FIG. 4 shows a plan view of the second positioning structure of the display panel according to the first embodiment of the present invention.

Fig. 5 shows a sectional view along line 5-5' of the first embodiment of the present invention.

FIG. 6 shows a cross-sectional view of the packaging of the first positioning structure and the second positioning structure of the present invention.

FIG. 7 shows a plan view of the first positioning structure of the display panel according to the second embodiment of the present invention.

FIG. 8 shows a plan view of a second positioning structure of a display panel according to a second embodiment of the present invention.

FIG. 9 shows a plan view of the first positioning structure of the display panel according to the third embodiment of the present invention.

FIG. 10 shows a plan view of the second positioning structure of the display panel according to the third embodiment of the present invention.

Detailed ways

Referring to FIG. 2 and FIG. 3 at the same time, FIG. 2 shows a plan view of the first positioning structure of the display panel of the first embodiment of the present invention, and FIG. 3 shows a sectional view along 3-3' of the first embodiment of the present invention. The first positioning structure 206 is located on the first display panel 200, and the first display panel may be the front panel or the rear panel of the plasma display, and wherein the first positioning structure 206 includes a plurality of protrusions 202 along the X direction and the Y direction and A recess 204 , the recess 204 of which is located between the two protrusions 202 . In this embodiment, the protruding portion 202 and the concave portion 204 of the first positioning structure form a fluorescent rectangle, and the protruding portion 202 of the first positioning structure is a roughly trapezoidal structure, and the base angle of the trapezoidal structure is θ ₁ , which is 45°. <θ ₁ <90°, and the included angle θ ₂ between the hypotenuse of the trapezoidal structure and the vertical direction, wherein θ ₁ +θ ₂ =90°.

Referring to Fig. 2, Fig. 4 and Fig. 5 at the same time, Fig. 4 shows a plan view of the second positioning structure of the display panel of the first embodiment of the present invention, and Fig. 5 shows a cross-sectional view along 5-5' of the first embodiment of the present invention. In a plasma display, its second display panel 400 is opposite to the first display panel 200 . The second positioning structure is on the surface of the second display board 400 opposite to the first display board, the second positioning structure 402 includes at least one protrusion 402 along the X direction and a Y direction and forms a rectangle, The protruding portion 402 of the second positioning structure can be embedded in the concave portion 204 of the first positioning structure. The protruding portion 402 of the second positioning structure is an arc structure, the angle between the tangent of the arc structure and the display panel is θ ₃ , the base angle of the trapezoidal structure of the protruding portion of the first positioning structure is θ ₁ , and θ ₃ <= θ ₁ .

The first positioning structure 206 and the second positioning structure 402 are located in the non-display area of the plasma display panel, that is, outside the display area 208, and the first positioning structure 206 can be made while manufacturing the partition wall of the rear panel, and the second positioning structure The structure 402 may be formed during the fabrication of the dielectric layer of the front plate, so the first positioning structure 206 may be composed of lead-containing transparent paste and metal oxide paste, and the second positioning structure 402 may be composed of lead-containing transparent paste. When the first display panel 200 and the second display panel 400 are packaged at high temperature, the softening point of the packaging material 604 must be lower than the softening point of the first positioning structure 206 and the second positioning structure 402, preferably lower than the positioning structure. The softening point A of the structure 206 and the second positioning structure, and 430 ° C < A < 800 ° C, the packaged structure through the packaging material 604 is shown in FIG. 6 , and the protrusion 402 of the second positioning structure is embedded below the positioning structure 206 The recess 204. The display panel also includes a partition wall structure 602. When the height of the partition wall structure 602 is c, the height of the protrusion of the first positioning structure 206 is b, then b<=c, and the height of the second positioning structure is d, then d<=b, the packaging material 604 is filled between the first display panel 200 and the second display panel 400 to package the display panel.

Referring to FIG. 7, FIG. 7 shows a plan view of the first positioning structure of the display panel according to the second embodiment of the present invention. The first positioning structure is located on the first display panel 700, and its first display panel 700 can be the front panel or the rear panel of a plasma display. Protrusions 702 and 704, another pair of bar-shaped protrusions 706 and 708, a pair of bar-shaped protrusions 710 and 712 parallel to the Y direction, and another pair of bar-shaped protrusions 714 and 716, wherein each pair of bar-shaped protrusions There is a strip-shaped recess 718 between the strip-shaped protrusions 702 and 704 , the strip-shaped protrusions 706 and 708 , the strip-shaped protrusions 710 and 712 , and the strip-shaped protrusions 714 and 716 .

Referring to FIG. 8, FIG. 8 shows a plan view of the second positioning structure of the display panel according to the second embodiment of the present invention. In a plasma display, its second display panel 800 is opposite to the first display panel 700 . The second positioning structure 802 is located on the surface of the second display board 800 opposite to the first display board, and the second positioning structure 802 includes strip-shaped protrusions 804, 806 parallel to the X direction and strip-shaped protrusions parallel to the Y direction Sections 808, 810 are composed. When the first display panel 700 and the second display panel 800 are packaged at high temperature, the strip-shaped protrusions 804 , 806 , 808 and 810 can be embedded in the recess 718 of the first positioning structure on the first display panel 700 . The first positioning structure and the second positioning structure are located in the non-display area of the plasma display panel.

Referring to FIG. 9, FIG. 9 shows a plan view of the first positioning structure of the display panel according to the third embodiment of the present invention. The first positioning structure is located on the first display panel 900, which can be the front panel or the rear panel of the plasma display, and the first positioning structure 906 includes a plurality of protrusions and recesses along the X direction and the Y direction. In this embodiment, the first positioning structure 906 is an L-shaped positioning structure, and each L-shaped positioning structure includes a pair of protrusions 902 and a recess 904 between the protrusions 902 .

Referring to FIG. 10 , FIG. 10 shows a plan view of the second positioning structure of the display panel according to the third embodiment of the present invention. In a plasma display, the second display panel 950 is opposite to the first display panel 900 . The second positioning structure 952 is located on the surface of the second display panel opposite to the first display panel. The second positioning structure 952 is an L-shaped positioning structure, which includes at least one protrusion, and the second positioning structure 952 can be embedded. The first positioning structure 906 is placed in the concave portion 904 . The first positioning structure 906 and the second positioning structure 952 are located in the non-display area of the plasma display panel.

The present invention is characterized in that a positioning structure is formed in the non-display area of the front panel and the rear panel of the plasma display, and the positioning structure is used to increase the packaging accuracy of the front panel and the rear panel, and prevent the gap between the front panel and the rear panel during the packaging of the display panel. Slippage, or alignment errors due to improper control during alignment or assembly.

Although the present invention is described by preferred embodiments, the present invention is not limited thereto. Those skilled in the art can make various modifications and changes without departing from the spirit and scope of the present invention. The scope of protection is defined by the appended claims.

Claims (10)

1. The positioning structure of a display panel, including: a first display panel; A first positioning structure, which is located on the non-display area of the first display panel, wherein the first positioning structure includes at least two first protrusions and a recess formed between the first protrusions; a second display panel opposite said first display panel; and A second positioning structure, pressed on the surface of the second display panel opposite to the first display panel, the second positioning structure includes at least a pair of second positioning structures corresponding to the recesses of the first positioning structure and a protruding portion for engaging the first positioning structure and the second positioning structure with each other. 2. The positioning structure of the display panel according to claim 1, wherein the first positioning structure and the second positioning structure form a rectangular positioning structure. 3. The positioning structure of the display panel according to claim 1, wherein the first positioning structure and the second positioning structure form an L-shaped positioning structure. 4. The positioning structure of the display panel according to claim 1, wherein the first positioning structure and the second positioning structure respectively extend in a vertical direction. 5 . The positioning structure of the display panel according to claim 1 , wherein the first protrusion is a trapezoidal structure, and a base angle of the trapezoidal structure is θ ₁ , where 45°<θ ₁ <90°. 6. The positioning structure of the display panel according to claim 5, wherein the second protrusion is an arc structure, and the angle between the tangent of the arc structure and the display panel is θ ₁ , and θ ₃ < = θ ₁ . 7. The positioning structure of the display panel according to claim 1, wherein the first positioning structure can be composed of lead-containing transparent paste and metal oxide paste, and the second positioning structure can be composed of lead-containing transparent paste material composition. 8. The display panel positioning structure according to claim 1, wherein the softening point temperature of the first positioning structure and the second positioning structure is between 430°C and 800°C. 9. The positioning structure of the display panel according to claim 1, wherein the display panel further comprises a partition wall structure, when the height of the partition wall structure is c, and the height of the first positioning structure is b, then b< = c. 10. The positioning structure of the display panel according to claim 9, wherein the height of the second positioning structure is d, then d<=b.

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