KR20020041493A - plasma display panel with a filter function added to black stripes - Google Patents

Abstract

PURPOSE: A plasma display panel including a black stripe having a filter function is provided to perform an NIR shielding function and improve color purity and color temperature of red color by adding the filter function to the black stripe. CONSTITUTION: An X electrode(3), a Y electrode, and a black stripe are formed on a front substrate(1). A dielectric layer(6) is formed thereon. An address electrode(5) is formed on a rear substrate(2). A dielectric layer(7) is formed on the address electrode(5). A barrier rib(8) is formed between the front substrate(1) and the dielectric layer(7). A fluorescent layer(9) is formed between each barrier rib(8). The X electrode(3) and the Y electrode are formed by an ITO electrode. A plurality of bus electrode(3',4') is used for preventing a voltage drop effect. A dye is added to the black stripes. A plurality of filter layer(23,24) including a dye having an NIR shielding function is formed on the black stripes.

Description

Plasma display panel with a filter function added to black stripes}

The present invention relates to a plasma display panel in which a filter function is added to a black stripe, and more particularly, a NIR blocking function can be performed without using a front plate made of tempered glass or an acrylic substrate, and the color purity and color temperature of a rod can be improved. The present invention relates to a plasma display panel in which a black stripe has a filter function.

There are two types of plasma display panel apparatus (PDP), so-called AC type and DC type. In the AC type PDP, the electrode of the discharge space in the panel is covered with a dielectric layer, and the discharge charge reciprocates on the dielectric layer, so It is called type, AC type. In this AC type drive device and drive method, the pulses for display emit light continuously by the memory effect due to wall charges on the dielectric layer. On the other hand, in the DC type PDP, the electrodes in the panel are exposed in the discharge space, and charges caused by the discharge flow into the external circuit through the electrodes. Therefore, this type of PDP is called DC type, that is, DC type, and the memory function of the display pulse is executed by floating charge in the discharge space.

In addition, AC type plasma display panels include a two-electrode type for performing selective discharge (address discharge) and sustain discharge on two electrodes, and a three-electrode type for performing address discharge using a third electrode. In a color plasma display panel that performs multi-gradation display, the phosphor in the cell is excited by ultraviolet rays generated by the discharge. However, this phosphor has a drawback that it is very weak to the impact of ions, which are static charges simultaneously generated by the discharge. In the mold, since the phosphor directly confronts the ions, there is a fear that the lifetime of the phosphor is reduced. Therefore, in the color plasma display panel, a three-electrode type (that is, a surface discharge type AC plasma display panel) using surface discharge is generally used.

FIG. 1 shows a configuration of the above-described surface discharge type AC plasma display panel as a schematic partial cross-sectional view of a discharge cell which is one display cell, and FIG. 2 shows a waveform diagram for driving the same. As shown in Fig. 1, in the plasma display panel, a front electrode group formed of the X electrode 3 and the Y electrode 4 is formed on the front substrate 1, and a dielectric layer 6 is formed thereon. In addition, an address electrode 5 is formed on the opposite rear substrate 2 of the front substrate 1, a dielectric layer 7 is formed thereon, and discharge gas is formed between the front substrate 1 and the front substrate 1. The partition 8 is formed to give a constant discharge space to be charged, and R, G, and B fluorescent layers 9 are formed between the partitions 8. In addition, the X electrode 3 and the Y electrode 4 are composed of an ITO electrode which is a transparent electrode so as not to inhibit light transmission of the front substrate 1, and in order to prevent voltage drop, a metal having a smaller area than this. Bus electrodes 3 ', 4' which are electrodes. In addition, the fluorescent layers 9 of R, G, and B are formed in a structure such as a stripe shape or a delta while forming display cells for each of the R, G, and B phosphors. In order to improve, the black stripe 3 ", 4" is formed on the front substrate 1 as shown in FIG.

The driving method applied to the plasma display panel configured as described above includes an address / oil dielectric separation method (disclosed in Japanese Patent Laid-Open Publication No. Hei 4-195188 (1992)) and an address / oil dielectric multiple method (Japanese Patent Number). 2,528,195), but mainly address / dielectric field separation method is applied, and as shown in FIG. 2, one field (frame) is displayed for gray scale display, for example. The subfields are divided into first to eighth subfields, and each subfield is composed of a reset period, an address period, and a sustain period, and each subfield is set with a specific sustain period. The gray level of the screen is displayed.

In the reset period, each subfield is initialized with wall charges such as the dielectric layer 6, and in the address period, selective write discharge (i.e., address discharge) of display data is performed for the selected cells after the reset period is executed. The sustain discharge is repeatedly performed so that one subfield is displayed by repeating the light emission display of the display cell selected by the address discharge.

In the circuit for the above driving method, although not shown, the address pulse at the time of address discharge is applied to the address electrode 5 by the address driver, and the address driver is controlled by the control circuit. The Y electrodes 4 are each connected to a Y scan driver, the scan driver is connected to a common driver on the Y side, pulses during address discharge are generated by the scan driver, and sustain pulses and the like are common on the Y side. Generated by the driver, these pulses are applied to the Y electrode 4 via the Y scan driver. The common driver on the Y side is controlled by the common driver control unit provided in the panel drive control unit, and the Y scan driver is controlled by the scan driver control unit installed in the panel drive control unit. The X electrodes 3 are commonly connected through all the display lines of the plasma display panel. The common driver on the X side generates a write pulse, a sustain pulse, and the like, and is controlled by the common driver control unit. The common driver control unit, the scan driver control unit and the control circuit are controlled by the vertical synchronizing signal and the horizontal synchronizing signal input to the panel driving control unit from the outside of the apparatus, the display data signal input to the display data control unit and the clock. In addition, the display data signal input in accordance with the clock is stored in the frame memory.

The surface discharge AC color plasma display panel described as an example of the plasma display panel includes a functional film, an EMI function, and the like on a tempered glass or an acrylic substrate as shown in FIG. 1 to improve optical characteristics and prevent EMI and reflection. A coating layer 11, such as a film or antireflection film, may be formed to include a front plate 10 attached to the front surface of the front substrate 1.

However, such a front plate 10 has a problem of lowering the transmittance of the front substrate 1, and also has a problem that the front plate 10 having a large number of functional layers and films having such a structure becomes expensive.

In addition, the coating of the coating layer 11, such as the functional film, the EMI function film, the anti-reflection film and the like directly on the front substrate 1, almost equally reduces the transmittance of the front substrate 1, and further There is a problem that the process is required and the formation of the front substrate 1 and the rear substrate 2 is affected by other processes in the manufacturing process.

Accordingly, the present invention is to solve this problem, it is possible to perform the NIR blocking function without the front plate using a tempered glass or acrylic substrate, and the filter function is added to the black stripe that can improve the color purity, color temperature and brightness of the rod It is an object to provide a plasma display panel.

1 is a schematic partial cross-sectional view for explaining the configuration of a three-electrode plasma display panel;

2 is a pulse waveform diagram for explaining a driving method of a three-electrode plasma display panel;

3 is a schematic partial cross-sectional view similar to FIG. 1 in which an embodiment of the present invention is applied to a three-electrode plasma display panel;

4 is a schematic partial cross-sectional view similar to FIG. 1 in which another embodiment of the present invention is applied to a three-electrode plasma display panel.

<Description of the symbols for the main parts of the drawings>

1: front board 2: back board

3: X electrode 3 ', 4': bus electrode

3 ", 4": Black stripe 4: Y electrode

5: address electrode 6, 7: dielectric layer

8: partition 9: fluorescent layer

In order to achieve the above object, a plasma display panel in which a filter function is added to a black stripe according to an embodiment of the present invention includes a front substrate on which at least a plurality of electrodes are formed, and a display (discharge) cell at a point crossing the electrodes. A plurality of address electrodes formed on the rear substrate so as to face the electrodes, a fluorescent layer of R, G, and B phosphors for displaying an image by discharge of the electrodes and address electrodes, and R, G of the fluorescent layers In the color plasma display panel comprising a black stripe formed to improve the contrast of the B three colors, in order to improve the color purity and color temperature of the dye and / or red (red) to the NIR blocking function to the black stripe It is characterized by the black stripe to which the dye which absorbs the orange color used is added.

In addition, a filter layer may be formed on the black stripe, including a dye having a NIR blocking function and / or a dye absorbing an orange color used to improve red color purity and color temperature. Dye may not be added.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic partial cross-sectional view of applying an embodiment of the present invention to a three-electrode plasma display panel.

In FIG. 3, the plasma display panel according to the exemplary embodiment of the present invention is configured similarly to the conventional art. That is, the X electrode 3, the Y electrode 4, and the black stripes 13 and 14 are formed on the front substrate 1, and the dielectric layer 6 is formed thereon. In addition, an address electrode 5 is formed on the opposite rear substrate 2 of the front substrate 1, a dielectric layer 7 is formed thereon, and discharge gas is formed between the front substrate 1 and the front substrate 1. The partition 8 is formed to give a constant discharge space to be charged, and R, G, and B fluorescent layers 9 are formed between the partitions 8. In addition, the X electrode 3 and the Y electrode 4 are composed of an ITO electrode which is a transparent electrode so as not to inhibit light transmission of the front substrate 1, and in order to prevent voltage drop, a metal having a smaller area than this. Bus electrodes 3 ', 4' which are electrodes.

In the plasma display panel having such a structure, according to one embodiment of the present invention, a dye having an NIR blocking function and / or a dye absorbing orange color used to improve red color purity and color temperature is formed into a black stripe. It is added to the material to form blackstripes 13 and 14.

Thus, even if the front plate 10 is not shown in FIG. 1 by adding dye to the black stripe 13 and 14, the added dye can achieve NIR blocking function even at low manufacturing cost. The color temperature can be improved, and furthermore, since the front plate 10 is absent and no film is formed in the central reflection direction of the display cell, the luminance can be greatly improved. In addition, by applying a film having an EMI function or a semi-reflective function on the viewing surface of the front substrate 1, ultimately, even if the front plate 10 is removed, the front plate 10 including the EMI function and the anti-reflection function All functions can be achieved.

4 is a schematic partial cross-sectional view in which another embodiment of the present invention is applied to a three-electrode plasma display panel.

In FIG. 4, the structure is almost similar to that of FIG. 3, but only in FIG. 4, in order to improve dye and / or red color purity and color temperature, which function as an NIR blocking function on the black stripe 3 ″ and 4 ″. The difference is that the filter layers 23 and 24 containing dyes absorbing the orange color used are formed.

In this way, the black stripes 3 "and 4" are formed in the same manner as before, and the filter layers 23 and 24 are formed to achieve the NIR blocking function at a low manufacturing cost as shown in FIG. Red) It is possible to improve the color purity and color temperature, and furthermore, since the front plate 10 is absent and no film is formed in the central reflection direction of the display cell, the luminance can be greatly improved. In addition, as in the above-described embodiment, by applying a film having an EMI function or a semi-reflective function on the viewing surface of the front substrate 1, ultimately, even if the front plate 10 is completely removed, the EMI function and the anti-reflection function may be applied. It is possible to plan all the functions of the front panel 10 including.

On the other hand, although not shown, as described above, the black stripe (3 ", 4") is used for improving the color purity and color temperature of the dye and / or red (Nred) blocking function and NIR blocking function. The absorbing dye may be composed of black stripe (3 ", 14") formed by adding to the light absorbing material which is a black stripe forming material. By configuring in this way, the above-described effects can be created.

Although the present invention is shown and described as being applied to the three-electrode type, it can be applied to the two-electrode type and the like in the color plasma display panel, and can be applied regardless of the AC type and the DC type.

In addition, in the above-described black stripe 13 and 14, the term "stripe" may be replaced with the term "matrix" and means simply formed of a light absorbing material, and is not limited to the stripe structure.

According to the configuration and operation of the plasma display panel in which the filter function is added to the black stripe according to the embodiment of the present invention described above, it is possible to improve the color purity and color temperature of the dyes and / or reds having the NIR blocking function on the black stripe. It is formed by adding a dye that absorbs orange color used for forming or forming a filter layer on the black strip with the dye, so that the NIR blocking function can be performed without a front plate made of tempered glass or an acrylic substrate, and the color purity of the rod. And color temperature and brightness can be improved.

Claims (2)

A front substrate 1 having at least a plurality of electrodes X and / or Y formed thereon, and a rear substrate facing the electrodes X and / or Y so as to form a display (discharge) cell at each point intersecting the electrodes; A plurality of address electrodes 5 formed in (2), and fluorescent layers 9 of R, G, and B phosphors for displaying an image by discharge of the electrodes X and / or Y and the address electrode 5 And a black stripe (3 ", 4 ") formed to improve the contrast of the three colors R, G, and B of the fluorescent layer 9, The black stripe (3 ", 4") is a black stripe (13, 14) to which the dye which absorbs the NIR blocking function and / or the dye which absorbs the orange color used to improve red color purity and color temperature is added. Plasma display panel with a filter function added to the black stripe. A front substrate 1 having at least a plurality of electrodes X and / or Y formed thereon, and a rear substrate facing the electrodes X and / or Y so as to form a display (discharge) cell at each point intersecting the electrodes; A plurality of address electrodes 5 formed in (2), and fluorescent layers 9 of R, G, and B phosphors for displaying an image by discharge of the electrodes X and / or Y and the address electrode 5 And a black stripe (3 ", 4 ") formed to improve the contrast of the three colors R, G, and B of the fluorescent layer 9, Filter layers 23 and 24 are formed on the black stripe 3 " and 4 " containing dyes which function to block NIR and / or dyes which absorb orange color used to improve red color purity and color temperature. Plasma display panel with a filter function is added to the black stripe.