A top cover structure and plasma display module

Abstract

The present invention relates to the field of electronic paper display technology, and specifically to an upper cover plate structure, comprising: a first substrate, a filter layer is arranged on the surface of the first substrate, the filter layer comprises a plurality of color filters arranged at intervals, gaps are formed between adjacent color filters, a reflective structure is arranged on the surface of the color filter away from the first substrate, a conductive medium layer is arranged on the surface of the reflective structure away from the color filter and on the surface of the gap, an insulating guide layer is filled in the gap, and the insulating guide layer is located on the surface of the conductive medium layer. The present invention arranges an insulating guide layer around the color filter and arranges the insulating guide layer on the surface of the conductive medium layer, so that the color filter corresponds to the pixel electrode, forms a straight up and down electric field, eliminates the oblique electric field, and improves the screen reflectivity and display contrast.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic paper display, and in particular to an upper cover plate structure and a plasma display module. Background Art

[0002] The existing plasma display screen structure is mainly composed of an upper glass substrate, a filter, an ITO layer and a plasma barrier dam, a pixel electrode and a lower substrate from top to bottom. The pixel electrode on the surface of the lower substrate is square-shaped, while the ITO layer on the surface of the upper substrate is a whole, covering the upper substrate. Therefore, an oblique electric field will be generated for the pixel electrode and the upper ITO cover plate, resulting in excessive afterimages at the pixel edges and reduced refresh service life. How to weaken or eliminate the oblique electric field has become an urgent problem to be solved. Summary of the invention

[0003] The present invention provides an upper cover plate structure and a plasma display module, which are used to weaken or eliminate the problem of oblique electric field existing in the prior art.

[0004] A technical solution of the present invention is as follows: A top cover structure, comprising: a first substrate, a filter layer is arranged on the surface of the first substrate, the filter layer comprises a plurality of spaced color filters, gaps are formed between adjacent color filters, a reflective structure is arranged on the surface of the color filter facing away from the first substrate, a conductive medium layer is arranged on the surface of the reflective structure facing away from the color filter and on the surface of the gap, an insulating guide layer is filled in the gap, and the insulating guide layer is located on the surface of the conductive medium layer.

[0005] Furthermore, the reflective structure includes a plurality of micro-reflective units, and the plurality of micro-reflective units are evenly arranged on the surface of each color filter, and the lower surface of the micro-reflective unit is a curved surface that bulges in a direction away from the color filter.

[0006] Furthermore, the material of the insulating guide layer is silicon nitride.

[0007] Furthermore, the insulating guide layer and the color filter are arranged with an interval or in contact with each other.

[0008] Another technical solution of the present invention is as follows: A plasma display module comprises a second substrate and any of the above-mentioned upper cover structures, the second substrate being arranged opposite to the first substrate, a plasma display cavity being formed between the first substrate and the second substrate, the plasma display cavity being filled with plasma particles, a pixel electrode layer being arranged on the surface of the second substrate facing the first substrate, and a plasma isolation structure extending toward the first substrate being arranged on the pixel electrode layer.

[0009] Furthermore, one end of the plasma isolation structure facing away from the second substrate abuts against the insulating guide layer.

[0010] Furthermore, the pixel electrode layer includes a plurality of pixel electrodes distributed in an array, a gap is formed between two adjacent pixel electrodes, the insulating guide layer faces the gap, and the plasma isolation structure covers the gap.

[0011] Furthermore, a support structure is arranged in the plasma display cavity.

[0012] Furthermore, the supporting structure includes supporting microspheres, and the supporting microspheres are supported between the reflective structure and the pixel electrode layer.

[0013] Furthermore, the cross-sectional shape of the plasma isolation structure includes a trapezoid.

[0014] Beneficial effects of the present invention: The present invention arranges an insulating guide layer around the color filter and arranges the insulating guide layer on the surface of the conductive medium layer, so that the color filter corresponds to the pixel electrode, forming a straight up and down electric field, weakening or eliminating the oblique electric field, reducing pixel afterimages, and improving the screen reflectivity and display contrast. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the upper cover plate structure in the present invention.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the plasma display module of the present invention.

[0017] Figure 3 It is a comparative schematic diagram of the electric field without adopting the structure of the present invention and the electric field with adopting the structure of the present invention. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. The described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0019] In one technical solution of the present invention, Figure 1 is a structural schematic diagram provided according to a specific structure of an upper cover plate structure of the present invention, such as Figure 1 and Figure 2 As shown, the present invention specifically includes:

[0020] A first substrate 110 is provided with a filter layer 120 on the surface of the first substrate 110 . The filter layer 120 includes a plurality of color filters 121 arranged at intervals. The color filters 121 include but are not limited to RGB three-color filters.

[0021] A gap 130 is formed between adjacent color filters 121, a reflective structure 150 is provided on the surface of the color filter 121 away from the first substrate 110, a conductive medium layer 140 is provided on the surface of the reflective structure 150 away from the color filter 121 and the surface of the gap 130, an insulating guide layer 160 is filled in the gap 130, and the insulating guide layer 160 is located on the surface of the conductive medium layer 140. The first substrate may be a glass substrate.

[0022] The insulating guide layer is disposed on the surface of the conductive medium layer and surrounds the color filter 121, so that the area where the color filter 121 is located corresponds to the pixel electrode on the surface of the lower cover plate to form a straight up and down electric field. Figure 3 As shown, thereby improving the display effect.

[0023] The material of the insulating guide layer is preferably silicon nitride SiNx, and those skilled in the art can also select from the insulating materials according to actual needs.

[0024] In one embodiment of the present technical solution, the reflective structure 150 includes a plurality of micro-reflective units 151, and the plurality of micro-reflective units 151 are evenly arranged on the surface of each of the color filters 121, and the lower surface of the micro-reflective unit 151 is an arc surface that is raised in a direction away from the color filter 121.

[0025] The material of the reflective structure can be optical grade acrylic resin, transparent polymer, transparent inorganic material, transparent composite material and the like, which has good reflective effect, among which optical grade acrylic resin can improve the reflective brightness and color saturation by 30%.

[0026] Specifically, the light incident from the first substrate 110 can be reflected at the micro-reflection unit 151. In addition, the micro-reflection unit 151 can evenly disperse the plasma particles in the plasma display area. The micro-reflection unit 151 is hemispherical, and the micro-reflection unit 151 can be realized by spin coating, optical etching, thermal curing or photocuring.

[0027] In one embodiment of the present technical solution, the insulating guide layer 160 is arranged in contact with the color filter 121, that is, the insulating guide layer completely fills the gap 130. In this arrangement, the color saturation of the plasma display screen can be effectively improved. Another arrangement is that the insulating guide layer 160 is arranged at intervals from the color filter 121, that is, a certain gap is left between the insulating guide layer and the color filter 121. In this arrangement, the screen reflectivity can be effectively improved, and this arrangement is the optimal arrangement.

[0028] In another technical solution of the present invention, Figure 2 It is a cross-sectional structural schematic diagram provided according to the specific structure of a plasma display module, such as Figure 2 As shown, it specifically includes: a second substrate 210 and any of the above-mentioned upper cover structures, the second substrate 210 is arranged opposite to the first substrate 110, a plasma display cavity is formed between the first substrate 110 and the second substrate 210, and the plasma display cavity is filled with plasma particles, wherein the plasma particles include white particles 310 and black particles 320. Figure 2 As shown, the darker color is the plasma black particles, and the lighter color is the plasma white particles. It should be understood that the plasma particles 320 may also include two-color, three-color or multi-color pigment particles, which can be selected as needed and are not limited here.

[0029] The surface of the second substrate 210 facing the first substrate 110 is provided with a pixel electrode layer 220, and the pixel electrode layer 220 is provided with a plasma isolation structure 230 extending toward the first substrate 110. The second substrate can be a TFT thin film transistor, a Thin Film Transistor glass substrate.

[0030] At the same time, an isolation layer may be provided on the surface of the pixel electrode layer 220 facing the first substrate 110. The isolation layer is used to isolate the pixel electrode layer from the plasma display cavity to prevent the pixel electrode from directly contacting the plasma, which can greatly improve the refresh life. At the same time, the isolation layer can make the pixel electrode layer smoother, so that the plasma isolation structure can be better set. The isolation layer can be made of PI polyimide material.

[0031] In one embodiment of the present technical solution, the end of the plasma isolation structure 230 away from the second substrate 210 is in contact with the insulating guide layer 160. The plasma isolation structure 230 is a trapezoidal structure extending from the pixel electrode layer 220 to the filter layer 120, and its cross-sectional shape is a trapezoid, which mainly serves to isolate plasma particles. The plasma isolation structure and the insulating guide layer 160 are in contact, so that the upper and lower substrates are supported, the strength of the overall structure of the display screen is increased, the movement of the slurry is reduced, and the deformation of the upper and lower cover plates caused by external forces is reduced, thereby improving the overall pressure resistance.

[0032] In one embodiment of the present technical solution, the pixel electrode layer includes a plurality of pixel electrodes 221 distributed in an array, a gap is formed between two adjacent pixel electrodes 221, the insulating guide layer 160 faces the gap, and the plasma isolation structure 230 covers the gap.

[0033] In one embodiment of the present technical solution, a support structure is provided in the plasma display cavity, which is not shown in the figure. Specifically, the support structure may be a support microsphere, which includes support microspheres, and the support microspheres are supported between the reflective structure 150 and the pixel electrode layer 220. The support microspheres mainly play a supporting and fixing role, improving the screen's resistance to pressure, so that when the screen is pressed during the display process, the image will not be blurred or deformed, thereby improving the stability of the displayed image.

[0034] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An upper cover plate structure, characterized in that: include: A first substrate (110), wherein a filter layer (120) is arranged on the surface of the first substrate (110), the filter layer (120) comprises a plurality of color filters (121) arranged at intervals, gaps (130) are formed between adjacent color filters (121), a reflective structure (150) is arranged on the surface of the color filter (121) facing away from the first substrate (110), a conductive medium layer (140) is arranged on the surface of the reflective structure (150) facing away from the color filter (121) and on the surface of the gaps (130), an insulating guide layer (160) is filled in the gaps (130), the insulating guide layer (160) is located on the surface of the conductive medium layer (140), and the insulating guide layer (160) is arranged around the color filter (121).

2. The upper cover plate structure according to claim 1, characterized in that: The reflective structure (150) comprises a plurality of micro-reflective units (151), wherein the plurality of micro-reflective units (151) are evenly arranged on the surface of each color filter (121), and the lower surface of the micro-reflective unit (151) is a curved surface that bulges in a direction away from the color filter (121).

3. The upper cover plate structure according to claim 1, characterized in that: The material of the insulating guide layer (160) is silicon nitride.

4. The upper cover plate structure according to claim 1, characterized in that: The insulating guide layer (160) and the color filter (121) are arranged in a spaced relationship or in contact with each other.

5. A plasma display module, characterized in that: The invention comprises a second substrate (210) and an upper cover plate structure according to any one of claims 1 to 4, wherein the second substrate (210) is arranged opposite to the first substrate (110), a plasma display cavity is formed between the first substrate (110) and the second substrate (210), the plasma display cavity is filled with plasma particles, a pixel electrode layer (220) is arranged on the surface of the second substrate (210) facing the first substrate (110), and a plasma isolation structure (230) extending towards the first substrate (110) is arranged on the pixel electrode layer (220).

6. The plasma display module according to claim 5, characterized in that: One end of the plasma isolation structure (230) facing away from the second substrate (210) abuts against the insulating guide layer (160).

7. The plasma display module according to claim 5, characterized in that: The pixel electrode layer comprises a plurality of pixel electrodes (221) distributed in an array, a gap is formed between two adjacent pixel electrodes (221), the insulating guide layer (160) faces the gap, and the plasma isolation structure (230) covers the gap.

8. The plasma display module according to claim 5, wherein: A supporting structure is arranged in the plasma display cavity.

9. The plasma display module according to claim 8, characterized in that: The supporting structure comprises supporting microspheres, and the supporting microspheres are supported between the reflective structure (150) and the pixel electrode layer (220).

10. The plasma display module according to claim 5, wherein: The cross-sectional shape of the plasma isolation structure (230) includes a trapezoid.

Images