Plasma display panel

Abstract

A plasma display panel is provided. The plasma display panel includes a front plate, a back plate, a shadow mask, and a first adhesive layer. The shadow mask is located between the front plate and the back plate. The first adhesive layer is formed between the shadow mask and the front plate. The shadow mask is adhered to the front plate via the first adhesive layer. Thus, noises generated during plasma discharge processes in the plasma display panel can be reduced.

Description

BRIEF DESCRIPTION OF THE APPENDED DRAWINGS

FIG. 1 shows the structure of a conventional plasma display panel (PDP).

FIG. 2A, FIG. 2B, and FIG. 2C show the structure of the plasma display panel according to a preferred embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

A plasma display panel with reduced noises is provided in the invention.

According to the invention, a preferred embodiment is a plasma display panel. Referring to FIG. 2A, FIG. 2A is a schematic diagram of the preferred embodiment. The plasma display panel 20 includes a front plate 22, a back plate 24, a shadow mask 26, and a first adhesive layer 28. The shadow mask 26 is located between the front plate 22 and the back plate 24. The first adhesive layer 28 is formed between the shadow mask 26 and the front plate 22.

In this embodiment, the front plate 22 includes a first glass substrate 221, a plurality of transparent electrodes 222, a plurality of auxiliary electrodes 223, a transparent dielectric layer 224, and a first protective layer 225. The back plate 24 includes a second glass substrate 241, a plurality of address electrodes 242, a dielectric layer 243, and a second protective layer 244. The shadow mask 26 includes a plurality of barrier ribs 261 and a plurality of color phosphors 262. The red, green, and blue phosphors are respectively represented by the marks 262A, 262B, and 262C. As those skilled in the art know, the devices included by the above mentioned front plate 22, back plate 24, and shadow mask 26 may have some differences in various plasma display panels. Thus, the devices of the front plate 22, back plate 24 and shadow mask 26, according to the invention, are not necessarily the same as those shown in FIG. 2A.

In practical applications, the first adhesive layer 28 may include glass or other similar material and is used to stick the shadow mask 26 to the front plate 22. Taking glass as an example, the producer can first spread glass powder or glass liquid on the plane of the shadow mask 26 opposite to the front plate 22 during the process of manufacturing plasma display panel 20. Afterward, the step of sealing and air-extracting will be done. When the temperature rises beyond the melting temperature of the glass material during the process, the glass powder or glass liquid spread on the shadow mask 26 will be melted, thus making the shadow mask 26 and the front plate 22 stick together. When the temperature decreases below the melting point of the glass material, the glass powder or glass liquid will be solidified to form the first adhesive layer 28 shown in FIG. 2A. The shadow mask 26 is accordingly adhered to the front plate 22 via the first adhesive layer 28. Besides, the melting temperature of the first adhesive layer 28 is lower than the melting temperature of the sealing glue used to fix the layers in the plasma display panel 20. In this way, the shadow mask 26 and the front plate 22 can stick together more firmly.

According to the invention, the plasma display panel 20 can further include a second adhesive layer 29 formed between the shadow mask 26 and back plate 24 to fix the shadow mask 26 to the back plate 24, as shown in FIG. 2B. Besides, the plasma display panel 20 can also include the second adhesive layer 29 without the first adhesive layer 28.

In order to improve contrast performance in a bright room, low-reflectivity material such as black glass can be used as the material applied between the shadow mask 26 and the front plate 22. It can reduce the reflection of light from the environment.

In the embodiment according to the invention, when the gas discharges, the shadow mask 26 can not generate vibration alone because it is solidified with the front plate 22 or the back plate 24. Therefore, the problems of noise in the prior art can be resolved.

With the above example and explanation, the features and spirits of the invention will be hopefully well described. Those skilled in the art will readily observe that numerous modifications and alterations of the device may be made while retaining the teaching of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.

Claims

1. A plasma display panel (PDP), comprising: a front plate;a back plate;a shadow mask located between the front plate and the back plate; anda first adhesive layer formed between the shadow mask and the front plate.

2. The PDP of claim 1, wherein the front plate comprises a first glass substrate, a transparent electrode, an auxiliary electrode, a transparent dielectric layer, and a first protective layer.

3. The PDP of claim 2, wherein the material of the transparent electrode comprises indium tin oxide (ITO) or SnO2.

4. The PDP of claim 1, wherein the back plate comprises a second glass substrate, an address electrode, a dielectric layer, and a second protective layer.

5. The PDP of claim 1, wherein the shadow mask comprises a plurality of barrier ribs and a plurality of color phosphors.

6. The PDP of claim 1, wherein the material of the first adhesive layer comprises glass; during the process of forming the first adhesive layer, the glass is heated, melted, and solidified; the shadow mask is accordingly adhered to the front plate via the first adhesive layer.

7. The PDP of claim 1, wherein the melting temperature of the first adhesive layer is lower than or equal to the melting temperature of the sealing glue used to fix the front plate, the back plate, and the shadow mask.

8. The PDP of claim 1, the PDP further comprising: a second adhesive layer formed between the shadow mask and the back plate.

9. The PDP of claim 8, wherein the material of the second adhesive layer comprises glass; during the process of forming the second adhesive layer, the glass is heated, melted, and solidified; the shadow mask is accordingly adhered to the back plate via the second adhesive layer.

10. A plasma display panel (PDP), comprising: a front plate;a back plate;a shadow mask located between the front plate and the back plate; anda second adhesive layer formed between the shadow mask and the back plate.