KR200161842Y1 - Color plasma display panel - Google Patents

Abstract

The present invention is a color plasma display panel in which R, G, B type phosphors are applied to R (Red), G (Green), and B (Blue) cells constituting one pixel, respectively, to form a phosphor film. The present invention relates to a color plasma display panel in which phosphors of the R, G, and B cells are different from each other so that the difference in the amount of emission between the R, G, and B cells caused by the difference in the luminous efficiency of the B phosphor is reduced. Since the phosphor coating amount of the cells is different from each other, it is possible to greatly reduce the light emission difference between the cells caused by the characteristics of the phosphor, so that a stable white balance can be realized and all colors can be accurately realized.

Description

Color plasma display panel

1 is a detailed structural diagram of a color plasma display panel according to the prior art.

2 is a simplified front view of the back glass substrate axis shown in FIG.

3 is a simplified front view of the back glass substrate side of the color plasma display panel according to the present invention;

* Explanation of symbols for main parts of the drawings

15: back glass plate 17: partition wall

18a, 18b, 18c: R (Red), G (Green), B (Blue) phosphor film

The present invention relates to a color plasma display panel. In particular, the phosphor coating amount of R (Red), G (Green), and B (Blue) cells constituting one pixel is composed of B cells> R cells> G cells. In addition, the present invention relates to a color plasma display panel which allows the amount of light emitted between cells generated by the difference in light emission efficiency of B phosphors to be balanced.

In general, a color plasma display panel is a type of light emitting display device that displays an image by using an internal gas phenomenon, and there is no need to mount an active device for each discharge cell, thereby increasing productivity by a simple manufacturing process. It is easy to increase in size and has a fast response speed, and thus, the display device of an image display device having a large screen, particularly an image display device for HDTV (High Definition Tele Vision) era, has been in the spotlight.

The color plasma display panel according to the prior art has a front glass substrate 1 having an image display surface as shown in FIGS. 1 and 2, and first and second sustain electrodes 2a, which are formed on the front glass substrate. 2b), a dielectric layer 3 formed on the first and second sustain electrode forming surfaces of the front glass substrate 1, a magnesium oxide (MgO) protective layer 4 deposited on the dielectric layer 3, A rear glass substrate 5 positioned to face the front organic substrate 1 with a predetermined distance therebetween, and an address electrode 6 formed on an opposite surface of the rear glass substrate 5 to the front glass substrate 1; ), A partition wall 7 formed between the address electrode 6 and a height corresponding to a distance between the front glass substrate 1 and the back glass substrate 5, and a corresponding address among the address electrodes 6. R, G, and B fluorescent film bodies 8a, 8b, and 8c formed on the electrode, the front glass substrate 1, and the back glass substrate And a mixed gas (not shown) injected into the discharge space formed by the partition 5 and the partition 7.

In the color plasma display panel configured as described above, each pixel is composed of three cells of R, G, and B, and each cell is divided by the first and second sustain electrodes 2a and 2b and the address electrode 6. The same amount of R, G, and B phosphors are applied to cells G, B, and R, G, and B phosphor films 8a, 8b, and 8c are formed, respectively.

An image display process of the color plasma display panel configured as described above is as follows.

First, a specific pulse is supplied to the first and second sustain electrodes 2a and 2b so that each cell is not affected by the previous light emission state, and then all the cells are discharge erased, and then a line is applied to the first sustain electrode 2a. When a scan pulse is supplied and one bit of image data of the corresponding line is supplied to the address electrode 6, a discharge occurs in a discharge space of a specific cell supplied with 1 (high pulse) as the bit value, and the mixed gas is brought into a plasma state. Emits ultraviolet light

The emitted ultraviolet rays excite the phosphor films 8a, 8b, and 8c formed on the rear glass substrate 5 of the specific cell to emit visible light from the phosphor films 8a, 8b, and 8c. When the light rays come out through the front glass substrate 1 of the specific cell, the user can recognize the light emission of the specific cell.

After that, when the light emission sustain pulse is supplied to the first and second sustain electrodes 2a and 2b, light emission of a specific cell is maintained for a predetermined time, and the supply of one bit of the image data as described above and the supply of the corresponding light emission sustain pulse are repeated. In the end, an image of one frame is displayed on the color plasma display panel.

In addition, one pixel is provided by the sum of hue of red, blue, and green visible light emitted in an appropriate amount according to image data (consisting of a plurality of bits) of R, G, and B cells supplied to the address electrode 6 during a period. Various colors are configured in the R, G, and B cells forming the cell.

That is, when image data (gradation data) equal to each of the R, G, and B cells constituting one pixel are supplied, theoretically white (achromatic color) is realized, and the image data supplied to the R, G, and B cells are different from each other. In this case, various colors are implemented according to the ratio of emission amounts.

However, conventionally, the luminous efficiency of the B phosphor is higher due to the characteristics of the phosphor, and the light emission efficiency of the G phosphor is higher than that of the R phosphor, so that the amount of light emitted from the same phosphor is G phosphor> R phosphor> B phosphor. When the amount of phosphor applied to B cells is the same, the amount of visible light emitted from each cell, that is, the luminance value (brightness) also becomes G cells> R cells> B cells, so that image data values supplied to R, G, and B cells when white is implemented. The larger the value, the more greenish white is displayed, that is, the white balance is unstable, and even when a color other than white is implemented, green light is combined more than the theoretical value, and blue light is less than the theoretical value, making it difficult to realize accurate colors.

However, when the plasma display panel according to the related art configured as described above is examined, since the amount of phosphors applied to all cells is the same, the difference in the amount of emitted light between the R, G, and B cells caused by the characteristics of the R, G, and B phosphors is very large. Problems such as instability of balance and inability to implement accurate colors occur.

The present invention was devised to solve the above problems. In consideration of the luminous efficiency of each of the R, G, and B phosphors, the phosphor coating amount of the R, G, and B cells is different from each other when each bit of image data is supplied. An object of the present invention is to provide a color plasma display panel capable of achieving stable white balance and accurate color by reducing the difference between the amount of emitted red light, green light, and blue light.

In order to achieve the above object, the color plasma display panel according to the present invention is separated into strip-type partition walls having a constant interval, and R, G, and B phosphors are respectively applied to the spaces between the partition walls, and R, G, In the AC plasma display device constituting the B cell, the amount of phosphors formed in the discharge spaces between the partition walls is different from each other so that B> R> G.

Hereinafter, an embodiment of a color plasma display panel according to the present invention will be described in detail with reference to the accompanying drawings.

The color plasma display panel according to the present invention is separated into strip-type partition walls having a constant interval as in the conventional art described above, and R, G, B Phosphors are respectively applied in the spaces between the partition walls, and are AC type constituting R, G, and B cells. It consists of a glass substrate, an address electrode, a partition, an R, G, and B phosphor film, and a mixed gas, and one pixel consists of three cells of R, G, and B.

In addition, the image display process of the color plasma display panel according to the present invention is also the same as the conventional image display process described above.

On the other hand, unlike the prior art, the present invention is applied to the R, G, B cells, respectively, to form the R, G, B phosphor film, the R, G, B cells generated due to the difference in the luminous efficiency of the R, G, B phosphors Phosphor coating amounts of R, G, and B cells are formed differently so as to reduce the difference in the amount of light emitted therebetween.

For example, when the luminous efficiency of R, G, and B phosphors is G phosphor> R phosphor> B phosphor, as shown in FIG. 3, the phosphor coating amount of R, G, B cells is B cell> R cell> G cell. To the rear glass substrates 15 of the R, G, and B cells, respectively, and are generated due to the difference in the luminous efficiency of the R, G, and B phosphors forming the R, G, and B phosphor films 18a, 18b, and 18c. The difference in light emission amount between the R, G, and B cells is reduced.

That is, when the same amount of G phosphor is applied to the G cell, a larger amount of the R phosphor is applied to the R cell than the G phosphor, and a larger amount of the B phosphor than the R phosphor is applied to the B cell, image data 1 When the bit is supplied, the amount of red light emitted from the R cell is slightly increased, and the amount of blue light emitted from the B cell increases more than the increase of the amount of red light, and as a result, the difference in the amount of light emitted between each cell is reduced.

Accordingly, the color plasma display panel according to the present invention can realize stable white balance and accurate color.

As described above, the color plasma display panel according to the present invention has a different phosphor coating amount of R, G, and B cells, so that the difference in emission amount between cells caused by the characteristics of the phosphor can be greatly reduced, thereby achieving stable white balance. There is an effect that can accurately implement all colors.

Claims (1)

It is divided into stripe-type partition walls having a constant interval, and R, G, and B phosphors are respectively applied to the spaces between the partition walls, and are in an AC plasma display device constituting R, G, and B cells. And the amount of phosphors formed in the discharge spaces between the barrier ribs is different from each other so that B> R> G.