KR100670321B1 - Plasma display apparatus - Google Patents

Abstract

The present invention relates to a plasma display device, comprising: a front case in which a window is formed; A rear case forming an inner space together with the front case; A plasma display panel disposed in the internal space, the plasma display panel including a first phosphor layer generating visible light in response to ultraviolet rays generated during internal discharge; A chassis coupled to the plasma display panel and having a substrate wired with a circuit for driving the plasma display panel; A filter installed in front of the plasma display panel; And a second phosphor layer disposed in front of the plasma display panel and generating visible light in response to ultraviolet rays generated during internal discharge of the plasma display panel.

Therefore, the filter can be directly attached to the plasma display panel to improve production efficiency and product performance, and the second phosphor layer can be used to utilize the lost ultraviolet light to brighten the screen, improve the overall brightness, and increase the contrast ratio. Has the effect.

Description

Plasma display apparatus

1 is an exploded perspective view of a plasma display device according to the prior art.

FIG. 2 is a cross-sectional view illustrating an installation state of the plasma display panel and the filter of FIG. 1.

3 is an exploded perspective view illustrating a plasma display device according to an exemplary embodiment of the present invention.

4 is a cross-sectional view illustrating the plasma display panel, the filter, and the second phosphor layer of FIG. 2.

5 is a cross-sectional view illustrating another example of FIG. 4.

6 is a cross-sectional view showing still another example of FIG. 4.

7 is a cross-sectional view illustrating still another example of FIG. 4.

8 is a cross-sectional view showing still another example of FIG. 4.

(Description of Major Symbols in the Drawing)

1: front case 2: rear case

3: plasma display panel 3a: front substrate

3b: backplane 4: board

5: chassis 6: filter

7: filter holder 8: second phosphor layer

9: fluorescent particles R, G, B: first phosphor layer

R ': red phosphor layer G': green phosphor layer

B ': blue phosphor layer

The present invention relates to a plasma display device, and more particularly, to a plasma display device for forming a second phosphor layer using discarded ultraviolet rays to realize a clear and bright image quality.

In general, as shown in FIG. 1, the plasma display apparatus includes a front case 1 in which a window is formed, a rear case 2 forming an interior space together with the front case 1, and a space in the interior space. The chassis 5 and the plasma display on which the plasma display panel 3 disposed, the substrate 4 coupled to the plasma display panel 3, and the circuits for driving the plasma display panel 3 are wired are arranged. It is the structure comprised by the filter 6 located in front of the panel 3. As shown in FIG.

Here, as shown in FIG. 2, the filter 6 is installed by the filter holder 7 to be spaced apart from the plasma display panel 3 at a predetermined distance S, and has a flatness therein. Includes a separate glass plate (not shown) to maintain.

That is, the reason why the filter 6 is provided apart from the plasma display panel 3 at a predetermined distance S is to discharge heat generated in the plasma display panel 3. For this reason, filters, such as an electromagnetic wave shielding filter, an infrared filter, a color correction filter, an antireflection filter, and a protection filter formed from a thin film, were attached to the separate glass plate which can fix them flat.

However, in the conventional plasma display device, the installation of the filter 6 spaced apart from the plasma display panel 3 is cumbersome, and the weight of the product is greatly increased due to the separate glass plate, as well as the separate glass plate and the plasma display. There is a problem in that the cost increases due to ancillary parts such as the filter holder 7 spaced apart from the panel 3.

2, the plasma display panel 3 includes a front substrate 3a and a rear substrate 3b, and discharge cells formed between the front substrate 3a and the rear substrate 3b. A discharge occurs between the electrodes of R, and the ultraviolet rays generated by the discharge are located in the discharge cell (R) phosphor layer (R), G (green) phosphor layer (G), B (blue) phosphor layer ( Each phosphor layer (R) (G) (B) reacts with B) to generate visible light, and the visible light is visually confirmed by the viewer to form an image.

However, the ultraviolet rays generated at the time of discharge are spread out in all directions, and about 50 percent of the ultraviolet rays emitted in other directions are not emitted in the phosphor layers (R) (G) (B) directions. It is not able to react with (G) (B) and it is lost, and it does not utilize the lost ultraviolet rays at all, but rather darkens the screen by using various ultraviolet shielding filters to prevent such lost ultraviolet rays from reaching the viewer and harming the health. Therefore, there are many problems such as lowering of overall luminance and lowering contrast ratio.

An object of the present invention for solving the above problems is, by attaching the filter directly to the plasma display panel to improve the production efficiency and product performance, and by using the second ultraviolet layer to use the lost ultraviolet light to brighten the screen, overall The present invention provides a plasma display device that improves luminance and enables contrast ratios to be increased.

Plasma display device of the present invention for achieving the above object,

A front case in which a window is formed;

A rear case forming an inner space together with the front case;

A plasma display panel disposed in the internal space, the plasma display panel including a first phosphor layer generating visible light in response to ultraviolet rays generated during internal discharge;

A chassis coupled to the plasma display panel and having a substrate wired with a circuit for driving the plasma display panel;

A filter installed in front of the plasma display panel; And

And a second phosphor layer disposed in front of the plasma display panel and generating visible light in response to ultraviolet rays generated during internal discharge of the plasma display panel.

In addition, according to the present invention, the second phosphor layer is attached to any one of the front, rear or middle of the filter, the filter and the second phosphor layer is a direct attachment filter directly attached to the front of the plasma display panel. It is preferable.

In addition, according to the present invention, it is preferable that the second phosphor layer is low-density applied to any one of the front surface and the rear surface of the filter.

According to the present invention, the first phosphor layer comprises an R (red) phosphor layer, a G (green) phosphor layer, and a B (blue) phosphor layer, and the second phosphor layer is formed of the first phosphor layer. R (red) phosphor layer, G (green) phosphor layer, and B (blue) phosphor layer are provided at positions corresponding to the positions of the R (red) phosphor layer, the G (green) phosphor layer, and the B (blue) phosphor layer, respectively. It is desirable to be.

In addition, it is preferable that the said filter contains at least any one or more of a color correction filter, an electromagnetic wave (EMI) subtraction filter, and a combination thereof.

On the other hand, the plasma display device of the present invention for achieving the above object,

A front case in which a window is formed;

A rear case forming an inner space together with the front case;

A plasma display panel disposed in the internal space and including a phosphor layer generating visible light in response to ultraviolet rays generated during internal discharge;

A chassis coupled to the plasma display panel, the substrate on which a circuit for driving the plasma display panel is wired; And

And a fluorescent filter installed in front of the plasma display panel and including phosphor particles generating visible light in response to ultraviolet rays generated during internal discharge of the plasma display panel.

Hereinafter, a plasma display device according to various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, as shown in FIG. 3, the plasma display apparatus according to an exemplary embodiment of the present invention includes a front case 1 having a window formed therein and a rear case forming an inner space together with the front case 1. (2) and a substrate 4 having a plasma display panel 3 disposed in the inner space and the plasma display panel 3 and having a circuit for driving the plasma display panel 3 wired thereon is disposed. It comprises a chassis (5).

In addition, the plasma display panel 3 of the present invention, as shown in Figure 4, includes a first phosphor layer (R) (G) (B) for generating visible light in response to ultraviolet rays generated during internal discharge. And a second phosphor layer 8 provided in front of the plasma display panel 3 and generating visible light in response to ultraviolet rays generated during internal discharge of the plasma display panel 3. ).

That is, the plasma display panel 3 includes a front substrate 3a and a rear substrate 3b, and discharge occurs between electrodes of a discharge cell formed between the front substrate 3a and the rear substrate 3b. And a first phosphor including an R (red) phosphor layer (R), a G (green) phosphor layer (G), and a B (blue) phosphor layer (B) in which ultraviolet rays generated through the discharge are positioned in the discharge cell. Each of the first phosphor layers (R) (G) (B) reacts with the layers (R) (G) (B) to generate visible light, and the viewer visually checks the generated visible light to form an image. At the same time, the ultraviolet rays generated at the time of discharge are spread in all directions, and do not diverge in the direction of the first phosphor layers R, G, and B, but emit approximately 50 percent of the ultraviolet rays in the direction of the front substrate 3a. UV light is opposite to the second phosphor layer 8 attached together with the filter 6 of the front substrate 3a. To thereby generate a visible light and improve the overall brightness of the screen greatly to more brightly, but with the advantage of greatly increasing the contrast contrast ratio.

Here, the second phosphor layer 8 is not necessarily attached to the rear surface of the filter 6, as shown in FIGS. 4 and 5, but as shown in FIG. 8, the filter 6 and the second phosphor layer 8 may be attached to the middle of the filter 6, as shown in FIG. 8. It is a direct attachment filter attached directly to the front of).

Therefore, by using the direct-attachment filter can simplify the installation of the filter and reduce the weight can improve the performance and productivity of the product.

Meanwhile, the method of attaching the second phosphor layer 8 to the filter 6 may be very diverse, and may be attached using an adhesive material, but preferably, the front or rear surface of the filter 6 may be attached. It is good to apply a low density to one surface.

In addition, as shown in FIG. 4, the second phosphor layer 8 includes R (red) phosphor layers (R) and G (green) phosphor layers of the first phosphor layer (R) (G) (B). R '(red) phosphor layer (R'), G '(green) phosphor layer (G'), B '(blue) at positions corresponding to the positions of (G) and B (blue) phosphor layer (B), respectively. It is also preferable to provide a phosphor (B ') layer.

The filter 6 may include various color correction filters, EMI subtraction filters, protective filters, infrared filters, and the like.

Meanwhile, in addition to forming the second phosphor layer 8 on the front, middle, and rear surfaces of the filter 6, as shown in FIG. 6, the phosphor particles 9 may be formed on the filter 6 itself. As such, the plasma display device of the present invention is provided in front of the plasma display panel 3, the phosphor particles for generating visible light in response to the ultraviolet rays generated during the internal discharge of the plasma display panel 3 ( It may comprise a fluorescent filter comprising 9).

The present invention is not limited to the above-described embodiments, and of course, modifications may be made by those skilled in the art without departing from the spirit of the present invention.

That is, embodiments of the second phosphor layer 8 or the filter 6 of the present invention are not limited to the drawings, and any type of phosphor technology capable of utilizing lossy ultraviolet light may be applied. Modifications and variations are possible to those skilled in the art without departing from the spirit of the present invention.

Therefore, the scope of the claims in the present invention will not be defined within the scope of the detailed description, but will be defined by the following claims and their technical spirit.

As described above, according to the plasma display device of the present invention, the filter is directly attached to the plasma display panel to improve the production efficiency and product performance, and the screen is brightened by utilizing the lost ultraviolet light by using the second phosphor layer, and the overall brightness. It has the effect of improving the contrast ratio of the contrast.

Claims (6)

A front case in which a window is formed; A rear case forming an inner space together with the front case; A plasma display panel disposed in the internal space, the plasma display panel including a first phosphor layer generating visible light in response to ultraviolet rays generated during internal discharge; A chassis coupled to the plasma display panel and having a substrate wired with a circuit for driving the plasma display panel; A filter installed in front of the plasma display panel; And A second phosphor layer disposed in front of the plasma display panel and generating visible light in response to ultraviolet rays generated during internal discharge of the plasma display panel; Plasma display device comprising a. The method of claim 1, The second phosphor layer is attached to any one of the front, rear or middle of the filter, wherein the filter and the second phosphor layer is a direct-attach filter attached directly to the front of the plasma display panel. . The method of claim 1, And the second phosphor layer is applied to any one of a front surface and a rear surface of the filter. The method of claim 1, The first phosphor layer is composed of an R (red) phosphor layer, a G (green) phosphor layer, and a B (blue) phosphor layer, and the second phosphor layer is an R (red) phosphor layer of the first phosphor layer, Plasma display, characterized in that R (red) phosphor layer, G (green) phosphor layer, B (blue) phosphor layer are provided at positions corresponding to the positions of G (green) phosphor layer and B (blue) phosphor layer, respectively. Device. The method of claim 1, And at least one of the color correction filter, the electromagnetic wave (EMI) subtraction filter, and a combination thereof. A front case in which a window is formed; A rear case forming an inner space together with the front case; A plasma display panel disposed in the internal space and including a phosphor layer generating visible light in response to ultraviolet rays generated during internal discharge; A chassis coupled to the plasma display panel and having a substrate wired with a circuit for driving the plasma display panel; And A fluorescent filter disposed in front of the plasma display panel and including phosphor particles generating visible light in response to ultraviolet rays generated during internal discharge of the plasma display panel; Plasma display device comprising a.

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