Plasma display module with polymer dielectric coating and plasma display screen

Abstract

The invention relates to the technical field of electronic paper display, in particular to a plasma display module with a polymer dielectric coating, which comprises a first substrate and a second substrate, the second substrate is opposite to the first substrate, a plasma display cavity is formed between the first substrate and the second substrate, and the plasma display cavity is filled with plasma particles; a pixel electrode layer is arranged on the surface, facing the first substrate, of the second substrate, a light filtering layer is arranged on the surface, facing the second substrate, of the first substrate, and a conductive medium layer is arranged on the surface, facing the second substrate, of the light filtering layer; the surface, facing the second substrate, of the conductive medium layer or the surface, facing the first substrate, of the pixel electrode layer is provided with a polymer dielectric coating. The polymer dielectric coating has the characteristics of vertical strong conductivity and transverse weak conductivity, can effectively reduce an oblique electric field, and helps particles move orderly between the upper substrate and the lower substrate, so that ghost shadows are eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic paper display, and in particular to a plasma display module and a plasma display screen with a polymer dielectric coating. Background Art

[0002] Existing plasma displays are mostly structures in which display plasma is sandwiched between upper and lower glass substrates. The upper and lower glass substrates can be made into structures such as pillars, clips or cofferdams, and the plasma is in direct contact with the ITO layers of the upper and lower glass substrates.

[0003] For this reason, an oblique electric field will be generated for 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 ghosting at the edges of the display pixels.

[0004] The color plasma display has a color layer etched on the upper substrate side. There are gaps between the color blocks in the color layer, which causes the plasma display box cover to be inaccurately aligned, affecting the display effect. Summary of the Invention

[0005] The present invention provides a plasma display module and a plasma display screen with a polymer dielectric coating, which are used to solve the technical problem mentioned in the background art that charged particles in the plasma move uncontrollably between the upper and lower substrates.

[0006] A technical solution of the present invention is as follows: A plasma display module with a polymer dielectric coating comprises: 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, the plasma display cavity being filled with plasma particles; A pixel electrode layer is provided on the surface of the second substrate facing the first substrate. A filter layer is provided on the surface of the first substrate facing the second substrate, and a conductive medium layer is provided on the surface of the filter layer facing the second substrate; a polymer dielectric coating is provided on the surface of the conductive medium layer facing the second substrate or the surface of the pixel electrode layer facing the first substrate.

[0007] Furthermore, the filter layer includes a plurality of color filters arranged at intervals, with filter gaps formed between adjacent color filters, and the pixel electrode layer includes a plurality of pixel electrodes arranged at intervals, with an electrode gap formed between two adjacent pixel electrodes.

[0008] Furthermore, when the polymer dielectric coating is located on the surface of the conductive medium layer facing the second substrate, the conductive medium layer covers the filter gap, and the polymer dielectric coating fills the filter gap.

[0009] 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 of the plasma isolation structure abuts against the polymer dielectric coating.

[0010] 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.

[0011] Furthermore, a plasma isolation structure is provided on the surface of the filter layer facing the second substrate, the plasma isolation structure covers the filter gap, and the conductive medium layer covers the surface of the plasma isolation structure facing the second substrate.

[0012] Furthermore, the conductive medium layer covers the filter gaps, and a plasma isolation structure is provided on the surface of the filter layer facing the second substrate.

[0013] Furthermore, the polymer dielectric coating is disposed on the surface of the conductive medium layer facing the second substrate or the surface of the pixel electrode layer facing the first substrate by one of evaporation, inkjet printing, spin coating, and slit coating processes.

[0014] Furthermore, the material of the polymer dielectric coating is one of silicon-based materials, acrylate materials, resin materials, acrylic materials and gelatin materials.

[0015] Furthermore, the dielectric constant of the polymer dielectric coating is 5-200 F / m.

[0016] Another technical solution of the present invention is as follows: A plasma display screen comprises: any one of the above-mentioned plasma display modules with a polymer dielectric coating.

[0017] Beneficial effects of the present invention: The polymer dielectric coating of the present invention has the characteristics of strong vertical conductivity and weak horizontal conductivity, which can effectively reduce the oblique electric field and promote the orderly movement of particles between the upper and lower substrates, thereby eliminating residual images. The polymer dielectric coating of the present invention can solve the unevenness between the color blocks of the upper cover plate or the pixel electrodes of the lower cover plate, acting as a leveling layer, thereby effectively improving the compressive strength of the screen. The polymer dielectric coating of the present invention can also improve the ability to withstand ultraviolet rays. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the first embodiment of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the second embodiment of the present invention.

[0020] Figure 3It is a structural diagram of the third embodiment of the present invention.

[0021] Figure 4 It is a structural diagram of the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0023] In the first technical solution of the present invention, Figure 1 FIG. 1 is a structural diagram of an embodiment of a plasma display module with a polymer dielectric coating according to the present invention. Figure 1 As shown, the present invention includes: The first substrate 110 and the second substrate 210 are arranged opposite to the first substrate 110 . A plasma display cavity is formed between the first substrate 110 and the second substrate 210 . Plasma particles are filled in the plasma display cavity.

[0024] 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.

[0025] The first substrate and the second substrate may both be glass substrates. More specifically, the second substrate may be a TFT (Thin Film Transistor) glass substrate.

[0026] A pixel electrode layer 220 is disposed on a surface of the second substrate 210 facing the first substrate 110 .

[0027] A filter layer 120 is disposed on a surface of the first substrate 110 facing the second substrate 210 , and a conductive medium layer 140 is disposed on a surface of the filter layer 120 facing the second substrate 210 .

[0028] A polymer dielectric coating 310 is provided on the surface of the conductive medium layer 140 facing the second substrate 210 or the surface of the pixel electrode layer 220 facing the first substrate 110 .

[0029] 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 and eliminate afterimages. At the same time, the polymer dielectric coating 310 can solve the uneven state 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 compressive strength of the screen.

[0030] To this end, the polymer dielectric coating 310 may be made of a material selected from the group consisting of silicon-based materials, acrylate materials, resin materials, and acrylic materials.

[0031] The polymer dielectric coating 310 is applied to the surface of the conductive medium layer 140 facing the second substrate 210 or the surface of the pixel electrode layer 220 facing the first substrate 110 via one of the following processes: evaporation, inkjet printing, spin coating, or slit coating. After the polymer dielectric coating is applied, it is cured via a photocuring process. After curing, the display area of ​​the plasma display module needs to be edge-sealed, so the polymer dielectric coating outside the display area needs to be removed via an etching process.

[0032] 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 a process such as evaporation, inkjet printing, spin coating, or slit coating, and then cured using photocuring. The dielectric constant of the polymer dielectric coating 310 is 5 to 200 F / m.

[0033] In one embodiment of the present technical solution, the filter layer 120 includes a plurality of spaced color filters 121, wherein the color filters 121 include but are not limited to RGB filters. A filter gap 130 is 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.

[0034] In one embodiment of this technical solution, Figure 1 As shown, when the polymer dielectric coating 310 is located on the surface of the conductive medium layer 140 facing the second substrate 210 , the conductive medium layer 140 covers the filter gap 130 , and the polymer dielectric coating 310 fills the filter gap 130 .

[0035] 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. It should be noted that the top of the plasma isolation structure 320 may or may not abut the polymer dielectric coating 310. The preferred state is that the top of the plasma isolation structure 320 abuts the polymer dielectric coating 310.

[0036] In one embodiment of this technical solution, Figure 2 As shown, when the polymer dielectric coating 310 is located on the surface of the conductive medium layer 140 facing the second substrate 210 , the conductive medium layer 140 covers the filter gap 130 , and the polymer dielectric coating 310 fills the filter gap 130 .

[0037] A support structure 330 is disposed in the plasma filling region. The support structure 330 includes support microspheres. The support microspheres are tangent to the polymer dielectric coating 310 and the pixel electrode layer 220 , respectively.

[0038] In one embodiment of this technical solution, 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 .

[0039] A plasma isolation structure 320 is provided on the surface of the filter layer 120 facing the second substrate 210, and the plasma isolation structure 320 covers the filter gap 130. The conductive medium layer 140 covers the surface of the plasma isolation structure 320 facing the second substrate 210. It should be noted that the conductive medium layer 140 located at the bottom end of the plasma isolation structure 320 may or may not abut the polymer dielectric coating 310, and the specific implementation method is selected by technical personnel.

[0040] In one embodiment of this technical solution, 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 .

[0041] The conductive dielectric layer 140 covers the filter gap 130. 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. 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 of the plasma isolation structure 320 may or may not abut the polymer dielectric coating 310, and the specific implementation method is selected by technicians.

[0042] In the three aforementioned embodiments, the plasma isolation structure is a trapezoidal structure. However, when located on the first substrate, the structure is an inverted trapezoidal structure, while when located on the second substrate, it is a regular trapezoidal structure. The plasma isolation structure primarily isolates plasma particles while providing support for the upper and lower substrates, increasing the overall structural strength of the display and reducing slurry movement. It also mitigates deformation of the upper and lower cover plates caused by external forces, improving overall compressive strength.

[0043] In a second technical solution of the present invention, a plasma display screen is provided, comprising: a plasma display module having any of the aforementioned polymer dielectric coatings. As specific embodiments of the display device, the display device may be a microcapsule or microcup electronic paper display, a bistable reflective liquid crystal display, or an LCD display. Specific effects of the display device can be referenced above regarding the effects of the plasma display module and will not be elaborated upon here.

[0044] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A plasma display module with a polymer dielectric coating, characterized in that: include: a first substrate (110) and a second substrate (210), 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), and plasma particles are filled in the plasma display cavity; A pixel electrode layer (220) is provided on a surface of the second substrate (210) 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 medium 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 medium 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 polymer dielectric coating according to claim 1, wherein: The filter layer (120) comprises a plurality of spaced color filters (121), with filter gaps (130) formed between adjacent color filters (121); the pixel electrode layer (220) comprises 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 according to claim 2, wherein: When the polymer dielectric coating (310) is located on the surface of the conductive medium layer (140) facing the second substrate (210), the conductive medium layer (140) covers the filter gap (130), and the polymer dielectric coating (310) fills the filter gap (130). A plasma isolation structure (320) is provided on the surface of the second substrate (210) facing the first substrate (110), and the plasma isolation structure (320) is located in the electrode gap (222).

4. The plasma display module with a polymer dielectric coating as claimed in claim 2, wherein: 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 claimed in claim 4, wherein: 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), and the conductive medium 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 according to claim 4, wherein: The conductive medium layer (140) covers the filter gap (130); a plasma isolation structure (320) is provided on the surface of the filter layer (120) facing the second substrate (210); and the plasma isolation structure (320) covers the filter gap (130).

7. The plasma display module with a polymer dielectric coating according to claim 1, wherein: The polymer dielectric coating (310) is provided on the surface of the conductive medium layer (140) facing the second substrate (210) or the surface of the pixel electrode layer (220) facing the first substrate (110) by one of an evaporation process, an inkjet printing process, a spin coating process, and a slit coating process.

8. The plasma display module with a polymer dielectric coating according to claim 1, wherein: The material of the polymer dielectric coating (310) is one of a silicon-based material, an acrylate material, a resin-based material, an acrylic material, and a gelatin-based material.

9. The plasma display module with a polymer dielectric coating as claimed in claim 1, wherein: The dielectric constant of the polymer dielectric coating (310) is 5-200 F / m.

10. A plasma display screen, characterized in that: include: The plasma display module with a polymer dielectric coating according to any one of claims 1 to 9.

Images