KR20010004115A - A back panel structure of reflective type plasma display panel - Google Patents

Abstract

PURPOSE: A rear panel structure of a reflective plasma display panel is provided to enhance luminance with a light reflecting film. CONSTITUTION: A light reflecting film(15) is formed on a rear glass substrate(10) and a transparent dielectric layer(16) is formed on the light reflecting film(15). The light reflecting film(15) is formed with Cr, Al or Mo(metal material), or Si(nonmetal material). A visible light emitted from a fluorescent substance(14) is transferred to the light reflecting film(15) via a white dielectric(12) and the transparent dielectric layer(16). Most of the visible light is reflected by the light reflecting film(15), and then is transferred to a front panel via the white dielectric(12) and the fluorescent substance(14). Therefore, it is possible to enhance luminance of a plasma display panel.

Description

Back panel structure of reflective plasma display panel {A back panel structure of reflective type plasma display panel}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to plasma display panel (PDP) technology, and more particularly to a back panel structure of a reflective plasma display panel.

PDP is a device that displays characters or images by using light emitted from plasma generated during gas discharge, and is also called a gas discharge display device. PDP is largely exposed to direct plasma because the electrode used to apply external voltage to form plasma is directly exposed because the direct current (DC) type and conduction current flowing through the electrode are covered with dielectric. Therefore, it is classified into AC type through which displacement current flows. In addition, according to the electrode structure of the discharge cell, it is classified into a counter discharge type, a surface discharge type, a barrier discharge type, and the like. In the case of directly using the visible light emitted from the discharge gas, it is mostly used in a monochromatic display PDP device. There is a PDP using orange color, and when full color display is required, ultraviolet light emitted from discharge gas such as Kr or Xe excites red (R), green (G) and blue (B) phosphors. Visible light is used. Among various flat panel displays, PDP is attracting attention as a display device that can realize a large screen, but it is still produced due to low brightness and contrast ratio, high driving voltage, low power consumption efficiency, and difficult manufacturing process technology due to large size. There is a problem that the yield is low, there is a problem that the low price should be made in addition to the improvement of the above characteristics.

In the case of the surface discharge type AC PDP, which is currently mainstream, a transparent electrode, a bus electrode, a transparent dielectric, a dielectric protective film, and a black stripe are formed on the front plate, and a glass substrate, an address electrode, a white dielectric, A partition or the like is formed. Phosphors for realizing color in the PDP are formed on the front plate in the case of a transmissive type and on the back plate in the case of a reflective type.

In the back plate structure, the white dielectric is to protect the lower address electrode when the partition wall is formed, and to increase the light efficiency of the visible light emitted from the phosphor reflected from the substrate side of the back plate and transmitted to the front plate. The structure covers the address electrode.

However, since the reflectance of such a white dielectric is not so high, there is a problem that the brightness of the PDP is not good.

SUMMARY OF THE INVENTION An object of the present invention is to provide a back plate structure of a reflective plasma display capable of improving luminance.

1 is a cross-sectional view of a cell of a reflective PDP according to an embodiment of the present invention.

2 is a cross-sectional view of a cell of a reflective PDP according to another embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

10 glass substrate 11 address electrode

12 white dielectric 13 partition wall

14 phosphor 15 light reflection film

16: transparent insulation layer

The main reason for the decrease in the brightness of the PDP is that the light reflectance of the white dielectric is not high. The present invention improves the brightness of the PDP by inserting a light reflecting film for increasing the light reflectance on the front or back of the glass substrate for the back plate. In the practice of the present invention, in some cases, the white dielectric, which is an obstacle to the transmission of the light reflected from the light reflection film, may be removed or replaced with a transparent insulating layer. A transparent insulating layer is further inserted between the light reflection film and the address electrode for insulation.

In order to solve the above technical problem, the back plate of the characteristic reflective plasma display of the present invention includes a glass substrate; A light reflection film provided on a rear surface of the glass substrate; An address electrode provided on the front surface of the glass substrate; Barrier ribs provided on the front surface of the glass substrate; And a phosphor provided between the partition walls.

In addition, the back plate of the characteristic reflective plasma display of the present invention for solving the above technical problem, the glass substrate; A light reflection film provided on the glass substrate; A transparent insulating layer provided on the light reflection film; An address electrode provided on the transparent insulating layer; Barrier ribs provided on the transparent insulating layer; And a phosphor provided between the partition walls.

Hereinafter, preferred embodiments of the present invention will be introduced in order to enable those skilled in the art to more easily carry out the present invention.

1 is a cross-sectional view of a cell of a reflective PDP according to an embodiment of the present invention.

The reflective PDP according to the present embodiment includes an address electrode 11 formed on the glass substrate 10 for the back plate, a white dielectric 12 covering the address electrode 11, and a white dielectric 12 as shown in the drawing. And a partition 13 formed on the bottom surface, a phosphor 14 coated between the partition 13 and the partition 13, and a light reflection film 15 attached to the rear side of the glass substrate 10 for the back plate.

That is, the light reflection film 15 for increasing the light reflectivity is further applied to the conventional backplate structure. In this case, the light reflection film 15 may be formed using a metal or a non-metallic material such as silicon (Si), such as chromium (Cr), aluminum (Al), molybdenum (Mo) alone or mixed, and the formation method is a sputter All possible methods, including law, can be applied.

In such a structure, when the visible light emitted by the phosphor 14 (indicated by an arrow in the drawing) is transmitted through the white dielectric 12 and the glass substrate 10 to the light reflection film 15, most of the light is reflected and again. Passed through the white dielectric 12 and the phosphor 14 to the front plate, thereby improving the brightness of the PDP.

In this case, the white dielectric material 12 does not have high light reflectance, but on the contrary, since the visible light reflected by the light transmittance is not high, it may be removed or replaced with a transparent insulator.

2 is a cross-sectional view of a cell of a reflective PDP according to another embodiment of the present invention.

The reflective PDP according to the present embodiment includes a light reflection film 15 formed on the glass substrate 10 for the back plate, a transparent insulation layer 16 formed on the light reflection film 15, and a transparent insulation layer, as shown in the drawing. The address electrode 11 formed on the 16, the white dielectric 12 covering the address electrode 11, the partition 13 formed on the white dielectric 12, the partition 13, and the partition 13 Is composed of a phosphor 14 applied therebetween.

That is, the light reflecting layer 15 and the light reflecting layer 15 for increasing the light reflectivity of the conventional back plate structure have conductivity, and thus the transparent insulating layer 16 considering the insulation with the address electrode 11 is further added. Applied. In this case, the light reflection film 15 may be formed using a metal or a non-metallic material such as silicon (Si), such as chromium (Cr), aluminum (Al), molybdenum (Mo) alone or mixed, and the formation method is a sputter All possible formation methods, including the law, can be applied.

In this structure, most of the light is reflected when visible light (indicated by arrows in the drawing) emitted from the phosphor 14 passes through the white dielectric 12 and the transparent insulating layer 16 and is transmitted to the light reflection film 15. The transparent insulating layer 16, the white dielectric 12, and the phosphor 14 are transferred to the front plate, thereby improving the luminance of the PDP.

In this case, the white dielectric material 12 does not have high light reflectance, but in contrast, since the visible light reflectance is not high in terms of light transmittance, the white dielectric 12 may be removed or replaced with another transparent layer.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes can be made in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

The present invention described above has the effect of improving the brightness of the PDP by increasing the light efficiency transmitted to the front plate through the adoption of the light reflection film.

Claims (8)

Glass substrates; A light reflection film provided on a rear surface of the glass substrate; An address electrode provided on the front surface of the glass substrate; Barrier ribs provided on the front surface of the glass substrate; And Phosphor provided between the partition walls The back plate of the reflective plasma display panel having a. The method of claim 1, And a dielectric covering an upper portion of the address electrode. The method of claim 2, The dielectric, A back plate of a reflective plasma display panel, which is a white dielectric or a transparent dielectric. The method according to any one of claims 1 to 3, The light reflection film, A back plate of a reflective plasma display panel comprising at least one of chromium, aluminum, molybdenum, and silicon. Glass substrates; A light reflection film provided on the glass substrate; A transparent insulating layer provided on the light reflection film; An address electrode provided on the transparent insulating layer; Barrier ribs provided on the transparent insulation layer; And Phosphor provided between the partition walls The back plate of the reflective plasma display panel having a. The method of claim 5, And a dielectric covering an upper portion of the address electrode. The method of claim 6, The dielectric, A back plate of a reflective plasma display panel, which is a white dielectric or a transparent dielectric. The method according to any one of claims 5 to 7, The light reflection film, A back plate of a reflective plasma display panel comprising at least one of chromium, aluminum, molybdenum, and silicon.