KR100546260B1 - Plasma display panel module - Google Patents

Abstract

The present invention provides a plasma display panel capable of increasing the ground area of a film type front filter.

The plasma display panel module includes a plasma display panel in which a lower substrate and an upper substrate are bonded to each other; A film type front filter including a film attached to the upper substrate and an elongate portion extending laterally from the film; And a curing agent formed between the stretched portion of the film and the lower substrate.

Description

Plasma Display Panel Module {PLASMA DISPLAY PANEL MODULE}             

1 is a perspective view showing a discharge cell structure of a conventional three-electrode AC surface discharge type plasma display panel.

2 is a diagram illustrating a frame for expressing 256 gray levels in a typical plasma display panel.

3 is a cross-sectional view schematically showing one side of a conventional plasma display panel module.

4 is a cross-sectional view schematically showing the front filter shown in FIG.

5 is a view showing in detail the grounding process of the front filter and the filter support shown in FIG.

Figure 6 is a perspective view schematically showing a conventional film type front filter.

7 is a schematic cross-sectional view of one side of a plasma display panel module according to an exemplary embodiment of the present invention.

FIG. 8 is an enlarged view of a portion A shown in FIG. 7; FIG.

9 is a perspective view of the lower substrate and the film-type front filter shown in FIG.

<Description of Symbols for Main Parts of Drawings>

10, 110: upper substrate 12Y, 12Z: transparent electrode

13Y, 13Z: bus electrodes 14, 22: dielectric layer

16: protective film 18, 118: lower substrate

24: partition 26: phosphor layer

30, 70, 170: front filter 32, 132: panel

34, 134: heat sink 36, 136: printed circuit board

38, 138: back cover 40, 140: filter support

42, 142: support member 50, 80: antireflective film

52, 82: optical film 54: glass

56, 86 EMI shielding film 58, 88 NIR shielding film

60, 90, 182: black layer 72, 176: ground plane

174: elongation 180: shock absorber

184: sealing agent 190: curing agent

192: Chip On Film

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel module, and more particularly, to a plasma display panel capable of increasing the ground area of a film type front filter.

Plasma Display Panels (hereinafter referred to as "PDPs") are characterized by emitting phosphors by 147 nm ultraviolet rays generated during discharge of an inert mixed gas such as He + Xe, Ne + Xe or He + Ne + Xe. An image containing graphics is displayed. Such a PDP is not only thin and easy to enlarge, but also greatly improved in quality due to recent technology development. In particular, the three-electrode AC surface discharge type PDP has advantages of low voltage driving and long life because wall charges are accumulated on the surface during discharge and protect the electrodes from sputtering caused by the discharge.

1 is a perspective view showing a discharge cell structure of a conventional PDP.

Referring to FIG. 1, a discharge cell of a three-electrode AC surface discharge type PDP includes a scan electrode Y and a sustain electrode Z formed on the upper substrate 10, and an address electrode formed on the lower substrate 18. X). Each of the scan electrode Y and the sustain electrode Z has a line width smaller than that of the transparent electrodes 12Y and 12Z and the transparent electrodes 12Y and 12Z, and the metal bus electrodes 13Y, which are formed at one edge of the transparent electrode, respectively. 13Z).

The transparent electrodes 12Y and 12Y are typically formed on the upper substrate 10 by indium-tin-oxide (ITO). The metal bus electrodes 13Y and 13Z are usually formed of metal such as chromium (Cr) and formed on the transparent electrodes 12Y and 12Z, thereby reducing the voltage drop caused by the transparent electrodes 12Y and 12Z having high resistance. The upper dielectric layer 14 and the passivation layer 16 are stacked on the upper substrate 10 having the scan electrode Y and the sustain electrode Z side by side. In the upper dielectric layer 14, wall charges generated during plasma discharge are accumulated. The protective layer 16 prevents damage to the upper dielectric layer 14 due to sputtering generated during plasma discharge and increases emission efficiency of secondary electrons. As the protective film 16, magnesium oxide (MgO) is usually used.

The lower dielectric layer 22 and the partition wall 24 are formed on the lower substrate 18 on which the address electrode X is formed, and the phosphor layer 26 is coated on the surfaces of the lower dielectric layer 22 and the partition wall 24. The address electrode X is formed in the direction crossing the scan electrode Y and the sustain electrode Z. The partition wall 24 is formed in a stripe or lattice shape to prevent the ultraviolet rays and the visible light generated by the discharge from leaking to the adjacent discharge cells. The phosphor layer 26 is excited by ultraviolet rays generated during plasma discharge to generate visible light of any one of red, green, and blue. Inert mixed gas is injected into the discharge space provided between the upper and lower substrates 10 and 18 and the partition wall 24.

The PDP is time-divisionally driven by dividing one frame into several subfields having different number of emission times in order to implement grayscale of an image. Each subfield is divided into an initialization period for initializing the full screen, an address period for selecting a scan line and selecting a discharge cell in the selected scan line, and a sustain period for implementing gradation according to the number of discharges.

For example, when the image is to be displayed with 256 gray levels, as shown in FIG. 2, the frame period (16.67 ms) corresponding to 1/60 second is divided into eight subfields SF1 to SF8. As described above, each of the eight subfields SF1 to SF8 is divided into an initialization period, an address period, and a sustain period. The initialization period and the address period of each subfield are the same for each subfield, while the sustain period is increased at a rate of 2n (n = 0, 1, 2, 3, 4, 5, 6, 7) in each subfield.

In the PDP driven as described above, a front filter is installed on the upper substrate 10 to shield electromagnetic waves and prevent reflection of external light.

3 is a cross-sectional view schematically showing one side of a conventional PDP.

Referring to FIG. 3, a conventional PDP module includes a panel 32 formed by joining an upper substrate 10 and a lower substrate 18, a front filter 30 installed on a front surface of the panel 32, and a panel. A heat sink 34 installed at the rear of the 32, a printed circuit board 36 installed to be attached to the heat sink 34, a back cover 38 formed to surround the rear of the PDP, and the front filter 30 ) And a filter support portion 40 for connecting the bag cover 38 and a support member 42 provided between the front filter 30 and the bag cover 38 so as to surround the filter support portion 40.

The printed circuit board 36 supplies a driving signal to the electrodes of the panel 32. To this end, the printed circuit board 36 includes various driving units not shown. The panel 32 displays a predetermined image in response to a drive signal supplied from the printed circuit board 36. The heat sink 34 dissipates heat generated from the panel 32 and the printed circuit board 36. The back cover 38 protects the panel 32 from external shocks and blocks electromagnetic waves emitted to the rear surface (hereinafter referred to as "EMI").

The filter support 40 electrically connects the front filter 30 to the bag cover 38. Such a filter support 40 grounds the front filter 30 to the bag cover 38 and prevents EMI from being emitted to the side. The support member 42 supports the filter support 40, the front filter 30, the bag cover 38, and the like.

The front filter 30 shields EMI and prevents reflection of external light. To this end, the front filter 30 is an antireflective film 50, an optical film 52, a glass 54, an EMI shielding film 56, and near infrared rays (NIR) as shown in FIG. A shielding film 58 is provided. Here, in practice, an adhesive layer is formed between the films 50, 52, 54, 56, and 58 of the front filter 30 to bond the films 50, 52, 54, 56, and 58. In addition, a black layer 60 formed on the edge of the annihilation filter 30 is further provided.

The antireflection coating 50 prevents light incident from the outside from being reflected back to the outside to improve the contrast of the PDP. The antireflective film 50 is formed on the surface of the front filter 30. Meanwhile, the antireflection film 50 may be further formed on the rear surface of the front filter 30. The optical characteristic film 52 lowers the luminance of red (R) and green (G) among the light incident from the panel 32 and improves the optical characteristic of the PDP by increasing the luminance of blue (B).

The glass 54 prevents the front filter 30 from being damaged from an external impact. In other words, the glass 54 supports the front filter 30 to prevent the front filter 30 from being damaged by an external impact. The EMI shielding film 56 shields the EMI to prevent the EMI incident from the panel 32 from being emitted to the outside. The NIR shielding film 58 shields the NIR emitted from the panel 32 to prevent the NIR above the reference from being emitted to the outside so that signals transmitted using the IR, such as a remote controller, can be normally transmitted. Meanwhile, the EMI shielding film 56 and the NIR shielding film 58 may be composed of one layer.

The black layer 60 defines the effective display area A / A of the panel 32 and at the same time hides unnecessary portions of the edge portion of the PDP module.

This front filter 30 is electrically connected to the bag cover 38 through the filter support 40 as shown in FIG. In detail, the filter support 40 is connected to the rear surface of the front filter 30 at one end of the front filter 30. In this case, the filter support 40 is electrically connected to at least one of the EMI shielding film 56 and the NIR shielding film 58. That is, the filter support 40 connects the front filter 30 to the bag cover 38 to shield EMI and / or NIR.

In the conventional front filter 30, a glass 54 larger than the size of the upper substrate of the panel 32 is used to prevent the front filter 30 from being damaged by an impact from the outside. However, when the glass 54 is inserted into the front filter 30 in this way, the thickness of the front filter 30 becomes thick. In addition, when the glass 54 is inserted into the front filter 30, the weight becomes heavy and the manufacturing cost increases.

In the conventional front filter 30, a glass 54 larger than the size of the upper substrate of the panel 32 is used to prevent the front filter 30 from being damaged by an impact from the outside. However, when the glass 54 is inserted into the front filter 30 in this way, the thickness of the front filter 30 becomes thick. In addition, when the glass 54 is inserted into the front filter 30, the weight becomes heavy and the manufacturing cost increases.

Therefore, the film type front filter 70 from which the glass 54 is removed as shown in FIG. 6 has been proposed. The film type front filter 70 has the same size as the upper substrate of the panel and includes an antireflection film 80, an optical characteristic film 82, an EMI shielding film 86, and an NIR shielding film 88. Here, an adhesive layer is formed between the films 80, 82, 86, and 88 of the film type front filter 70 to bond the films 80, 82, 86, and 88. In addition, the film type front filter 70 includes a ground plane 72 formed at an edge region of the antireflective film 80, and a black layer 90 formed at a predetermined interval inside the ground plane 72.

The antireflective film 80 is formed on the surface of the film type front filter 70 to prevent the light incident from the outside from being reflected back to the outside. The antireflective film 80 may be further formed on the rear surface of the film type front filter 70. The optical characteristic film 82 lowers the luminance of red (R) and green (G) among the light incident from the panel, and also improves the optical characteristic of the PDP by increasing the luminance of blue (B).

The EMI shielding film 86 shields the EMI to prevent the EMI incident from the panel from being emitted to the outside. The NIR shielding film 88 shields the NIR incident from the panel. The NIR shielding film 88 prevents the NIR above the reference from being emitted to the outside so that signals transmitted from the remote controller or the like to the panel can be normally transmitted.

The ground plane 72 is electrically connected to the bag cover 38 as shown in FIG. 3 through a filter support not shown. The black layer 90 defines an effective display area (A / A) of the panel and at the same time hides unnecessary portions of the edge portion of the PDP module.

As described above, the PDP having the film type front filter 70 forms the ground plane 72 and the black layer 90 at the same time because the film type front filter 70 is manufactured in the same size as the upper substrate of the panel. Because of this, there is not enough space for forming the ground plane 72 and the black layer 90, there is a difficulty in the process.

Accordingly, it is an object of the present invention to provide a PDP module capable of increasing the ground area of a film type front filter.

In addition, another object of the present invention is to provide a PDP module that prevents contact between the ground plane of the film type front filter and the PDP and minimizes the impact transmitted to the PDP.

In order to achieve the above object, the PDP module according to the present invention includes a PDP in which the lower substrate and the upper substrate is bonded; A film type front filter including a film attached to the upper substrate and an elongate portion extending laterally from the film; And a curing agent formed between the stretched portion of the film and the lower substrate.
On the film of the film type front filter, a black layer is formed on the upper substrate and defines an effective display area of the plasma display panel.
A ground plane is formed on the stretched portion of the film.
The PDP module further includes a back cover surrounding the rear surface of the PDP, and a filter support for electrically connecting the ground plane on the extension to the back cover.
The PDP module further includes a support member supporting the film type front filter, the back cover, and the filter support part.
The material of the curing agent is any one of an ultraviolet curing agent, epoxy and silicone.
A buffer member is further provided between the black layer and the support member.
The film type front filter includes an anti-reflective film for preventing reflection of light incident from the outside, an optical characteristic film for correcting optical characteristics incident from the plasma display panel, and an electromagnetic shielding film for blocking electromagnetic waves incident from the plasma display panel. And a near-infrared shielding film for shielding near-infrared rays incident from the panel.

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Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 7 to 9.

7 and 8, according to an embodiment of the present invention (Plasma Display Panel: hereinafter referred to as "PDP"), the upper substrate 110 and the lower substrate 118 are bonded by the sealing agent 184. Extending from both sides of the panel 132 and the film 172 and the film 172 attached to the front surface of the upper substrate 110 of the panel 132 and the ground surface 176 is formed 174 The film-type front filter 170 including a), the heat sink 134 is installed on the rear of the panel 132, the printed circuit board 136 is installed to be attached to the heat sink 134, and surrounds the back of the PDP A filter cover 140 for connecting the back cover 138, the film front filter 170 and the back cover 138, the film front filter 170 to surround the filter support 140, A support member 142 is provided between the back cover 138, and a curing agent 190 formed between the lower substrate 118 and the extension portion 174 of the film-type front filter 170.

The printed circuit board 136 supplies a driving signal to the electrodes of the panel 132. To this end, the printed circuit board 136 mounts various drives not shown. The panel 132 displays a predetermined image in response to a drive signal supplied from the printed circuit board 136. The address driver for driving the address electrode 120X formed on the lower substrate 118 among the drivers mounted on the printed circuit board 136 is connected to the address electrode 120X through the chip on film 192. .

The heat sink 134 radiates heat generated from the panel 132 and the printed circuit board 136. The back cover 138 protects the panel 132 from external shock and blocks electromagnetic waves emitted to the rear surface (hereinafter referred to as "EMI").

The filter support 140 electrically connects the film type front filter 170 to the bag cover 138 using conductive fibers or metal materials. Such a filter support 140 grounds the film type front filter 170 to the back cover 138 and prevents EMI from being emitted to the side. The support member 142 supports the filter support 140, the film type front filter 170, the back cover 138, and the like.

As shown in FIG. 9, the film type front filter 170 includes a film 172 and an extension 174 extending laterally from the film 172.

The film 172 of the film type front filter 170 shields EMI and prevents reflection of external light. The film 172 of the film type front filter 170 is the same size as the lower substrate 118 of the panel. The film type front filter 170 further includes an antireflection film, an optical characteristic film, an EMI shielding film, and a near infrared ray (NIR) shielding film. Here, an adhesive layer is formed between the films of the film type front filter 170 to bond the films.

The anti-reflective film is formed on the surface of the film filter 170 to prevent the light incident from the outside is reflected back to the outside. Such an antireflection film may be further formed on the rear surface of the film type front filter 170. The optical characteristic film improves the optical characteristics of the PDP by lowering the luminance of red (R) and green (G) and increasing the luminance of blue (B) among the light incident from the panel 132.

The EMI shielding film shields the EMI to prevent the EMI incident from the panel 132 from being emitted to the outside. The NIR shielding film shields the NIR incident from the panel 132. The NIR shielding layer prevents the NIR above the reference from being emitted to the outside so that signals transmitted from the remote controller or the like to the panel 132 can be normally transmitted.

The black layer 182 is formed at the edge of the film 172 of the film type front filter 170. The black layer 182 defines an effective display area A / A of the panel 132 and at the same time obscures unnecessary portions of the edge portion of the PDP module.

The extending part 174 of the film front filter 170 extends to a predetermined width on both sides or one side or each side of the film front filter 172. The extension part 174 includes a ground plane 176 formed adjacent to the black layer 182 formed at the edge of the film 172 of the film type front filter 170.

In addition, the PDP module according to an embodiment of the present invention further includes a shock absorber 180 provided between the black layer 182 formed on the film 172 of the film type front filter 170 and the support member 142. do. The shock absorber 180 prevents the physical stress of the support member 142 from being transmitted to the film type front filter 170 by buffering and absorbing the physical stress of the support member 142, for example, a load and a shock. do.

The ground plane 176 is electrically connected to the bag cover 138 through the filter support 140. The ground plane 176 serves to flow EMI generated from the film 172 of the film type front filter 170 to the bag cover 138 through the filter support 140.

The curing agent 190 is an edge between the elongated portion 174 of the film type front filter 170 and the side of the upper substrate 110 and the elongated portion 174 including the sealing agent 184 and the lower substrate 118. After being applied to, it is cured by irradiation of ultraviolet (Ultraviolet). Accordingly, the hardener 190 prevents external shock or load from being transmitted to the module. In this case, the curing agent 190 may be formed of epoxy or silicon in addition to the UV curing agent.

As such, the PDP module according to the embodiment of the present invention forms a black layer 182 formed on the film 172 due to the elongation portion 174 extending from the film 172 of the film type front filter 170. It will be able to make space for it. That is, all edge regions of the film 172 corresponding to the outer portion of the effective display area of the upper substrate 110 may be formed of the black layer 182, thereby ensuring a process margin. In addition, the PDP module according to the embodiment of the present invention can minimize the transfer of external load and impact to the PDP by absorbing the impact by the curing agent 190.

As described above, the PDP module according to an embodiment of the present invention includes an elongation portion that is extended from the film type front filter, and a curing agent formed between the elongation portion and the lower substrate. Accordingly, the present invention can increase the space for forming the black layer and the ground plane by forming a black layer on the edge of the film-type front filter and the ground plane in the extension portion. In addition, the present invention can minimize the transmission of external impact to the PDP by the curing agent. Since the present invention does not require a structural change of the PDP currently used, it is possible to form the ground plane and the black layer at a minimum cost.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (7)

delete delete A plasma display panel in which a lower substrate and an upper substrate are bonded; A film type front filter comprising a film attached to the upper substrate and an elongate portion extending laterally from the film; Is provided with a grounding member for grounding the extension, The film type front filter includes a black layer formed at an edge of the film to define an effective display area of the panel, a ground plane formed at the extension part and electrically connected to the ground member, And the grounding member includes a back cover surrounding a rear surface of the panel, and a filter support for electrically connecting the ground surface to the back cover. The method of claim 3, wherein A support member for supporting the film front filter, the back cover, and the filter support; Further provided with a curing agent formed between the extending portion and the lower substrate, The material of the curing agent is a plasma display panel module, characterized in that any one of an ultraviolet curing agent, epoxy and silicon. delete The method of claim 4, wherein And a buffer formed between the black layer and the support member. The method of claim 3, wherein The film, An anti-reflective film for preventing the light incident from the outside from being reflected back to the outside; An optical characteristic film for improving luminance of light incident from the panel; An electromagnetic shielding film for blocking the electromagnetic waves incident from the panel from being emitted to the outside; And a near infrared shielding film for shielding near infrared rays incident from the panel.

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