A plasma display module and plasma display screen with a polymer dielectric coating

Abstract

This utility model relates to the field of electronic paper display technology, specifically to a plasma display module with a polymer dielectric coating, comprising: a first substrate and a second substrate, the second substrate being disposed opposite to the first substrate, forming a plasma display cavity between the first and second substrates, the plasma display cavity being filled with plasma particles; a pixel electrode layer is disposed on the surface of the second substrate facing the first substrate, a filter layer is disposed on the surface of the first substrate facing the second substrate, and a conductive dielectric layer is disposed on the surface of the filter layer facing the second substrate; a polymer dielectric coating is disposed on the surface of the conductive dielectric layer facing the second substrate or the surface of the pixel electrode layer facing the first substrate. The polymer dielectric coating in this utility model possesses the characteristics of strong vertical conductivity and weak horizontal conductivity, which can effectively reduce the oblique electric field and help particles move orderly between the upper and lower substrates, thereby eliminating image retention.

Description

Technical Field

[0001] This utility model relates to the field of electronic paper display technology, specifically to a plasma display module and a plasma display screen with a polymer dielectric coating. Background Technology

[0002] Existing plasma displays mostly have a structure in which display plasma is sandwiched between upper and lower glass substrates. Both upper and lower glass substrates can be used as pillars, clips, or dikes, and the plasma is in direct contact with the ITO layer of the upper and lower glass substrates.

[0003] This results in an oblique electric field being generated on the pixel electrode and the upper ITO cover plate, causing the charged particles in the display plasma to move uncontrollably between the upper and lower substrates, resulting in severe pixel edge ghosting.

[0004] Color plasma displays have color layers etched on the upper substrate side. The gaps between the color blocks in the color layer cause misalignment when the plasma display case is closed, affecting the display effect. Summary of the Invention

[0005] This invention provides a plasma display module and a plasma display screen with a polymer dielectric coating, which solves the technical problem mentioned in the background art of uncontrolled movement of charged particles in plasma between the upper and lower substrates.

[0006] One technical solution of this utility model is as follows: a plasma display module with a polymer dielectric coating, comprising: a first substrate and a second substrate, the second substrate being disposed opposite to the first substrate, a plasma display cavity being formed between the first substrate and the second substrate, and the plasma display cavity being filled with plasma particles;

[0007] A pixel electrode layer is disposed on the surface of the second substrate facing the first substrate.

[0008] A filter layer is disposed on the surface of the first substrate facing the second substrate, and a conductive dielectric layer is disposed on the surface of the filter layer facing the second substrate; a polymer dielectric coating is disposed on the surface of the conductive dielectric layer facing the second substrate or on the surface of the pixel electrode layer facing the first substrate.

[0009] Furthermore, the filter layer includes a plurality of spaced-apart color filters, with filter gaps formed between adjacent color filters, and the pixel electrode layer includes a plurality of spaced-apart pixel electrodes, with electrode gaps formed between adjacent pixel electrodes.

[0010] Furthermore, when the polymer dielectric coating is located on the surface of the conductive dielectric layer facing the second substrate, the conductive dielectric layer covers the filter gap, and the polymer dielectric coating fills the filter gap.

[0011] Furthermore, a plasma isolation structure is provided on the surface of the second substrate facing the first substrate. The plasma isolation structure is located in the electrode gap, and the top end of the plasma isolation structure abuts against the polymer dielectric coating.

[0012] Furthermore, when the polymer dielectric coating is located on the surface of the pixel electrode layer facing the first substrate, the polymer dielectric coating fills the electrode gap.

[0013] Furthermore, a plasma isolation structure is provided on the surface of the filter layer facing the second substrate, the plasma isolation structure covers the gap between the filters, and the conductive dielectric layer covers the surface of the plasma isolation structure facing the second substrate.

[0014] Furthermore, the conductive dielectric layer covers the gap between the filters, and the surface of the filter layer facing the second substrate is provided with a plasma isolation structure.

[0015] Furthermore, the polymer dielectric coating is applied to the surface of the conductive dielectric layer facing the second substrate or the surface of the pixel electrode layer facing the first substrate using one of the following processes: vapor deposition, inkjet printing, spin coating, or slot coating.

[0016] Furthermore, the polymer dielectric coating is made of one of the following materials: silicon-based materials, acrylate materials, resin materials, acrylic materials, and gelatin materials.

[0017] Furthermore, the dielectric constant of the polymer dielectric coating is 5~200F / m.

[0018] Another technical solution of this utility model is as follows: a plasma display screen, comprising: any of the above-mentioned plasma display modules having a polymer dielectric coating.

[0019] The beneficial effects of this invention are as follows: The polymer dielectric coating in this invention possesses strong vertical conductivity and weak horizontal conductivity, which can effectively reduce the oblique electric field and help particles move orderly between the upper and lower substrates, thereby eliminating image retention. The polymer dielectric coating in this invention can solve the unevenness between color blocks on the upper cover plate or pixel electrodes on the lower cover plate, acting as a leveling layer and effectively improving the screen's compressive strength. The polymer dielectric coating in this invention can improve the screen's resistance to ultraviolet radiation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment of this utility model.

[0021] Figure 2 This is a structural schematic diagram of the second embodiment of the present invention.

[0022] Figure 3This is a structural schematic diagram of the third embodiment of this utility model.

[0023] Figure 4 This is a structural schematic diagram of the fourth embodiment of this utility model. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0025] In the first technical solution of this utility model, Figure 1 This is a structural schematic diagram of an embodiment of a plasma display module with a polymer dielectric coating according to the present invention, as shown below. Figure 1 As shown, this utility model includes:

[0026] A first substrate 110 and a second substrate 210 are disposed opposite to the first substrate 110, and a plasma display cavity is formed between the first substrate 110 and the second substrate 210, wherein the plasma display cavity is filled with plasma particles.

[0027] The plasma particles include white particles and black particles. It should be understood that the plasma particles may also include two-color, three-color, or multi-color pigment particles, which can be selected as needed and are not limited here.

[0028] Both the first substrate and the second substrate can be glass substrates. More specifically, the second substrate can be a TFT thin film transistor glass substrate.

[0029] A pixel electrode layer 220 is disposed on the surface of the second substrate 210 facing the first substrate 110.

[0030] A filter layer 120 is disposed on the surface of the first substrate 110 facing the second substrate 210, and a conductive dielectric layer 140 is disposed on the surface of the filter layer 120 facing the second substrate 210.

[0031] A polymer dielectric coating 310 is provided on the surface of the conductive dielectric layer 140 facing the second substrate 210 or on the surface of the pixel electrode layer 220 facing the first substrate 110.

[0032] Among them, the polymer dielectric coating 310 is made of polymer dielectric material, which has the characteristics of strong vertical conductivity and weak horizontal conductivity. It can help particles move in an orderly manner between the upper and lower substrates, eliminating afterimages. At the same time, the polymer dielectric coating 310 can solve the unevenness between the color blocks of the upper cover plate or the pixel electrodes of the lower cover plate, and play the role of a leveling layer, thereby effectively improving the screen's compressive strength.

[0033] Therefore, the polymer dielectric coating 310 can be made from one of the following materials: silicon-based materials, acrylic materials, resin-based materials, and acrylic materials.

[0034] The polymer dielectric coating 310 is applied to the surface of the conductive dielectric layer 140 facing the second substrate 210 or the surface of the pixel electrode layer 220 facing the first substrate 110 using one of the following processes: vapor deposition, inkjet printing, spin coating, or slot coating. After the polymer dielectric coating is applied, it is cured using a photopolymerization process. After curing, since the display area of ​​the plasma display module needs to be sealed, an etching process is required to remove the polymer dielectric coating outside the display area.

[0035] During manufacturing, a polymer dielectric coating is applied to the TFT side of the lower substrate or the ITO side of the upper substrate using methods such as vapor deposition, inkjet printing, spin coating, or slot coating, and then cured by photocuring. The dielectric constant of the polymer dielectric coating 310 is 5~200 F / m.

[0036] In one embodiment of this technical solution, the filter layer 120 includes a plurality of spaced-apart color filters 121, wherein the color filters 121 include, but are not limited to, RGB three-color filters. A filter gap 130 is formed between adjacent color filters 121. The pixel electrode layer 220 includes a plurality of spaced-apart pixel electrodes 221, and an electrode gap 222 is formed between two adjacent pixel electrodes 221.

[0037] In one embodiment of this technical solution, such as Figure 1 As shown, when the polymer dielectric coating 310 is located on the surface of the conductive dielectric layer 140 facing the second substrate 210, the conductive dielectric layer 140 covers the filter gap 130, and the polymer dielectric coating 310 fills the filter gap 130.

[0038] The second substrate 210 has a plasma isolation structure 320 on its surface facing the first substrate 110. The plasma isolation structure 320 is located in the electrode gap 222. It should be noted that the top of the plasma isolation structure 320 may or may not abut against the polymer dielectric coating 310. Preferably, the top of the plasma isolation structure 320 abuts against the polymer dielectric coating 310.

[0039] In one embodiment of this technical solution, such as Figure 2 As shown, when the polymer dielectric coating 310 is located on the surface of the conductive dielectric layer 140 facing the second substrate 210, the conductive dielectric layer 140 covers the filter gap 130, and the polymer dielectric coating 310 fills the filter gap 130.

[0040] A support structure 330 is provided in the plasma filling area. The support structure 330 includes support microspheres, which are tangent to the polymer dielectric coating 310 and the pixel electrode layer 220, respectively.

[0041] In one embodiment of this technical solution, such as Figure 3 As shown, when the polymer dielectric coating 310 is located on the surface of the pixel electrode layer 220 facing the first substrate 110, the polymer dielectric coating 310 fills the electrode gap 222.

[0042] A plasma isolation structure 320 is provided on the surface of the filter layer 120 facing the second substrate 210. The plasma isolation structure 320 covers the filter gap 130. The conductive dielectric layer 140 covers the surface of the plasma isolation structure 320 facing the second substrate 210. It should be noted that the conductive dielectric layer 140 located at the bottom end of the plasma isolation structure 320 may or may not abut against the polymer dielectric coating 310. The specific implementation method shall be selected by those skilled in the art.

[0043] In one embodiment of this technical solution, such as Figure 4 As shown, when the polymer dielectric coating 310 is located on the surface of the pixel electrode layer 220 facing the first substrate 110, the polymer dielectric coating 310 fills the electrode gap 222.

[0044] The conductive dielectric layer 140 covers the filter gap 130. A plasma isolation structure 320 is disposed on the surface of the filter layer 120 facing the second substrate 210, covering the filter gap 130. In this case, the top of the plasma isolation structure covers the conductive dielectric layer 140 embedded in the filter gap 130. It should be noted that the bottom end of the plasma isolation structure 320 may or may not abut against the polymer dielectric coating 310; the specific implementation method can be selected by those skilled in the art.

[0045] In all three embodiments described above, the plasma isolation structure is a trapezoidal structure. The difference lies in that when the plasma isolation structure is located on the first substrate side, it is an inverted trapezoidal structure, and when it is located on the second substrate side, it is a regular trapezoidal structure. The plasma isolation structure primarily serves to isolate plasma particles. Simultaneously, it provides support to the upper and lower substrates, increasing the overall structural strength of the display screen, reducing plasma movement, and minimizing deformation of the upper and lower cover plates caused by external forces, thus improving overall compressive strength.

[0046] In the second technical solution of this utility model, a plasma display screen is provided, comprising: any of the aforementioned plasma display modules with a polymer dielectric coating. As a specific embodiment of the display device, the display device can be an electronic paper display screen with microcapsules or microcups, a bistable reflective liquid crystal display screen, or an LCD liquid crystal display screen. Regarding the specific effects of the display device, please refer to the effects of the display plasma module described above; further details will not be repeated here.

[0047] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A plasma display module having a dielectric coating of a polymer, characterized by include: A first substrate (110) and a second substrate (210) are disposed opposite to the first substrate (110), and a plasma display cavity is formed between the first substrate (110) and the second substrate (210), wherein the plasma display cavity is filled with plasma particles. The second substrate (210) has a pixel electrode layer (220) on its surface facing the first substrate (110). A filter layer (120) is provided on the surface of the first substrate (110) facing the second substrate (210), and a conductive dielectric layer (140) is provided on the surface of the filter layer (120) facing the second substrate (210); a polymer dielectric coating (310) is provided on the surface of the conductive dielectric layer (140) facing the second substrate (210) or on the surface of the pixel electrode layer (220) facing the first substrate (110).

2. The plasma display module with a dielectric coating of a polymer according to claim 1, wherein The filter layer (120) includes a plurality of spaced color filters (121), with a filter gap (130) formed between adjacent color filters (121). The pixel electrode layer (220) includes a plurality of spaced pixel electrodes (221), with an electrode gap (222) formed between two adjacent pixel electrodes (221).

3. The plasma display module with a polymer dielectric coating as described in claim 2, characterized in that, When the polymer dielectric coating (310) is located on the surface of the conductive dielectric layer (140) facing the second substrate (210), the conductive dielectric layer (140) covers the filter gap (130), the polymer dielectric coating (310) fills the filter gap (130), and a plasma isolation structure (320) is provided on the surface of the second substrate (210) facing the first substrate (110), the plasma isolation structure (320) is located in the electrode gap (222).

4. The plasma display module with a polymer dielectric coating as described in claim 2, characterized in that, When the polymer dielectric coating (310) is located on the surface of the pixel electrode layer (220) facing the first substrate (110), the polymer dielectric coating (310) fills the electrode gap (222).

5. The plasma display module with a polymer dielectric coating as described in claim 4, characterized in that, The filter layer (120) has a plasma isolation structure (320) on its surface facing the second substrate (210). The plasma isolation structure (320) covers the filter gap (130), and the conductive dielectric layer (140) covers the surface of the plasma isolation structure (320) facing the second substrate (210).

6. The plasma display module with a polymer dielectric coating as described in claim 4, characterized in that, The conductive dielectric layer (140) covers the filter gap (130), and the filter layer (120) has a plasma isolation structure (320) on its surface facing the second substrate (210), which covers the filter gap (130).

7. The plasma display module with a polymer dielectric coating as described in claim 1, characterized in that, The polymer dielectric coating (310) is applied to the surface of the conductive dielectric layer (140) facing the second substrate (210) or the surface of the pixel electrode layer (220) facing the first substrate (110) by one of the following processes: vapor deposition, inkjet printing, spin coating, or slot coating.

8. The plasma display module with a polymer dielectric coating as described in claim 1, characterized in that, The polymer dielectric coating (310) is made of one of the following materials: silicon-based materials, acrylate materials, resin materials, acrylic materials, and gelatin materials.

9. The plasma display module with a polymer dielectric coating as described in claim 1, characterized in that, The dielectric constant of the polymer dielectric coating (310) is 5~200F / m.

10. A plasma display panel, characterized by comprising: include: The plasma display module with a polymer dielectric coating as described in any one of claims 1-9.

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