KR20050011846A - Plasma display panel - Google Patents

Abstract

PURPOSE: A plasma display panel is provided to improve heat release efficiency by contacting a metal plate to a back cover. CONSTITUTION: A back cover(120) wraps a rear surface of a display panel(112). A double-side adhesive tape is adhered to the rear surface of the display panel. An extension unit is extended from a side of the double-side adhesive tape. A metal plate(140) is adhered to the extension unit and transmits heat transferred through the double-side adhesive tape from the display panel to the back cover. A heat sink(116) is adhered to the display panel by the double-side adhesive tape to support the display panel and radiates the heat transmitted through the double-side adhesive tape. A printed circuit board(150) is provided with driving circuits for driving the display panel, the driving circuits being installed on the rear surface of the heat sink.

Description

Plasma Display Panel {PLASMA DISPLAY PANEL}

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel capable of improving heat dissipation of heat generated inside the plasma display panel.

Recently, various flat panel displays have been developed to reduce weight and volume, which are disadvantages of cathode ray tubes. Such flat panel displays include liquid crystal displays, field emission displays, electro luminescence, and plasma display panel displays.

Among them, the plasma display panel displays an image including characters or graphics by emitting phosphors by 147 nm ultraviolet rays generated when discharge of an inert mixed gas such as He + Xe, Ne + Xe or He + Ne + Xe. Such a plasma display panel is not only thin and large in size, but also has a fast response speed and is suitable for displaying a large-area image due to the recent development of many technologies. Therefore, the plasma display panel is used as a display device for high-definition television, monitor, and indoor / outdoor advertising.

FIG. 1 is a perspective view schematically showing the inside of a typical plasma display panel, and FIG. 2 is a schematic cross-sectional view of the plasma display panel shown in FIG. 1 taken along line AA ′.

1 and 2, a typical plasma display panel 1 includes a panel 12, a heat sink 16, a back cover 20, a cabinet 10, and a printed circuit board (PCB). 50).

The panel 12 is composed of a front substrate and a rear substrate (not shown), and phosphors are coated on the rear substrate. The front substrate transmits light generated from the phosphor to display a predetermined image.

The panel 12 includes a plurality of driving integrated circuits (hereinafter referred to as "driver ICs") connected to scan electrodes and address electrodes (not shown) to supply data signals and scan signals, respectively. do. The driver ICs are composed of a scan driver IC and a data driver IC, each of which is installed between the printed circuit board 50 and the panel 12 to the panel 12 in response to a control signal supplied from the printed circuit board 50. Supply the drive signal. The double-sided adhesive tape 30 is attached to the surface of the panel 12 facing the heat sink 16. The panel 12 and the heat sink 16 are bonded by the double-sided adhesive tape 30. As shown in FIG. 3, the double-sided adhesive tape 30 includes a heat resistant material layer 32 and an adhesive material layer 34. The adhesive material layer 34 is formed with the heat resistant material layer 32 interposed therebetween, and the panel 12 and the heat sink 16 are bonded to each other by the adhesive material layer 34.

The heat sink 16 is bonded to the panel 12 by the double-sided adhesive tape 30 to support the panel 12 and to dissipate heat generated when the panel 12 is driven. As the material of the heat sink 16, a metallic material having high thermal conductivity, for example, aluminum, is used to efficiently dissipate heat generated from the panel 12. The heat dissipation plate 16 is formed with a projection 18 on which the printed circuit board 50 is stacked. A hole (not shown) is formed in the protrusion 18, and a screw 54 passes through the hole 52 formed in the printed circuit board 50, so that the printed circuit board 50 is fastened to the heat sink 16.

In addition, guards 14 protruding from the heat sink 16 are formed at four corners of the heat sink 16. A hole 25 is formed in the guard 14, and a screw 35 penetrates the hole 25 to fix the heat sink 16 to the back cover 20.

The printed circuit board 50 supplies a predetermined driving signal to the electrodes of the panel 12. To this end, the printed circuit board 50 includes various driving units, and the printed circuit board 50 and the panel 12 are connected by an FPC (Flexible Printed Circuit) (not shown). Holes 52 are formed in the printed circuit board 50 and fastened to the heat sink 16 by screws 54.

The cabinet 10 is installed at the front of the panel 12 to protect the panel 12 from external shocks and is composed of a glass and a front filter. The front filter is composed of an optical characteristic film, an electromagnetic shield (EMI) shielding film, and an ultraviolet shielding film. The glass protects the front filter from damage from external impact. The optical characteristic film improves the optical characteristics of the plasma display panel by lowering the luminance of red (R) and green (G) and increasing the luminance of blue (B) among the light incident from the panel 12. The electromagnetic shielding film shields electromagnetic waves and prevents electromagnetic waves incident from the panel 12 from being emitted to the outside. The infrared shielding film shields the infrared rays emitted from the panel 12 to prevent the infrared rays above the reference from being emitted to the outside so that signals transmitted using the infrared rays such as a remote controller can be normally transmitted.

When the plasma display panel is shipped, the back cover 20 is installed to surround the plasma display panel. The back cover 20 is coupled to the cabinet 10 to protect the plasma display panel from external shocks and to block electromagnetic waves emitted to the rear surface.

The plasma display panel 1 generates a lot of heat in the panel 12 and the printed circuit board 50 during driving. The heat generated from the inside of the plasma display panel 1 is dissipated through the heat sink 16, but the heat dissipation efficiency is low, so that the inside of the plasma display panel 1 becomes a high temperature state. When the inside of the plasma display panel 1 is in a high temperature state, the driving characteristics of the plasma display panel 1 are deteriorated and the driving elements are damaged. In order to solve the heat dissipation problem, a blower (FAN) may be installed in the plasma display panel 1, but there is a problem in that noise is generated when the blower is driven. In addition, additional equipment must be added for heat dissipation, resulting in higher manufacturing costs.

Accordingly, an object of the present invention is to provide a plasma display panel that can effectively dissipate heat generated in the plasma display panel.

1 is a perspective view schematically showing the inside of a typical plasma display panel.

FIG. 2 is a schematic cross-sectional view of the plasma display panel of FIG. 1 taken along line AA ′. FIG.

3 is a cross-sectional view of the double-sided adhesive tape shown in FIG.

4 is a perspective view schematically illustrating an interior of a plasma display panel according to a first embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view of the plasma display panel shown in FIG. 4 taken along line AA ′. FIG.

6 is a cross-sectional view of the double-sided adhesive tape shown in FIG.

7 is a perspective view schematically illustrating the inside of a plasma display panel according to a second embodiment of the present invention.

FIG. 8 is a schematic cross-sectional view of the plasma display panel shown in FIG. 7 taken along line AA ′.

9 is a cross-sectional view of the double-sided adhesive tape shown in FIG.

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

1,100: plasma display panel 10,110,210: cabinet

12,112,212: Panel 14,114,214: Guard

16,116,216: heat sink 18,118,218: projection

20,120,220: Back cover 30,130,230: Double sided adhesive tape

32,132,232: Adhesive layer 34,234: Heat resistant layer

25,125,225: Hole 135,235: Screw

134: heat conductive material layer 140, 240: metal plate

135: kidney

In order to achieve the above object, a plasma display panel according to an embodiment of the present invention is a display panel, a back cover surrounding the back of the display panel, a double-sided adhesive tape attached to the back of the display panel, the double-sided adhesive tape And a metal plate that is extended from one side of the extension part and transfers heat transferred to the back cover from the display panel through the double-sided adhesive tape.

According to an embodiment of the present invention, a plasma display panel is bonded to the display panel by the double-sided adhesive tape to support the display panel and to dissipate heat transferred through the double-sided adhesive tape, and a rear surface of the heat sink. The display device may further include a printed circuit board installed in the board and mounted with driving circuits for driving the display panel.

The extension part of the plasma display panel according to an embodiment of the present invention is bent in a "∩" shape to be bonded to one side of the side and the back of the frame.

In the plasma display panel according to an embodiment of the present invention, at least one hole is formed in the metal plate in contact with one side of the side and the rear surface of the frame.

In the plasma display panel according to an embodiment of the present invention, at least one hole is formed in a position corresponding to the hole formed in the metal plate on the back cover.

The screw of the plasma display panel according to an embodiment of the present invention is characterized in that through the hole formed in the metal plate and the hole formed in the back cover to fasten the metal plate and the back cover.

According to an exemplary embodiment of the present invention, a plasma display panel includes a display panel, a back cover surrounding a rear surface of the display panel, a double-sided adhesive tape attached to a rear surface of the display panel, and a bent “-” shape to form the display panel. And a metal plate inserted between the double-sided adhesive tape and transferring the heat of the display panel to the back cover, and an elongate portion extending from one side of the metal plate.

Plasma display panel according to an embodiment of the present invention is a heat sink which is bonded to the display panel by the double-sided adhesive tape to support the display panel and dissipate heat transferred through the metal plate, and is installed on the back of the heat sink The display device may further include a printed circuit board on which driving circuits for driving the display panel are mounted.

Plasma display panel according to an embodiment of the present invention is characterized in that it further comprises a screw for fastening the back cover and the metal plate.

The extension part of the plasma display panel according to an exemplary embodiment of the present invention is bent in a “∩” shape so as to be in contact with one side of a side and a rear surface of the frame.

In the plasma display panel according to an embodiment of the present invention, at least one hole is formed in the metal plate in contact with one side of the side and the rear surface of the frame.

In the plasma display panel according to an embodiment of the present invention, at least one hole is formed in a position corresponding to the hole formed in the metal plate on the back cover.

The screw of the plasma display panel according to an embodiment of the present invention is characterized in that through the hole formed in the metal plate and the hole formed in the back cover to fasten the metal plate and the back cover.

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, the plasma display panel according to the present invention will be described in detail with reference to FIGS. 4 to 9.

4 is a perspective view schematically illustrating the inside of a plasma display panel according to a first embodiment of the present invention, and FIG. 5 is a cross-sectional view schematically illustrating the plasma display panel shown in FIG. 4 by cutting along the line A-A '. .

4 and 5, the plasma display panel 100 according to the first embodiment of the present invention includes a panel 112, a heat sink 116, a back cover 120, a cabinet 110, A double-sided adhesive tape 130, a metal plate 140, and a printed circuit board (PCB) 150 are provided.

The panel 112 is composed of a front substrate and a rear substrate (not shown) and phosphors are coated on the rear substrate. The front substrate transmits light generated from the phosphor to display a predetermined image.

The panel 112 includes a plurality of driving integrated circuits (hereinafter referred to as "driver ICs") connected to scan electrodes and address electrodes (not shown) to supply data signals and scan signals, respectively. do. The driver ICs include a scan driver IC and a data driver IC, each of which is installed between the printed circuit board and the panel 112 and supplies a driving signal to the panel 112 in response to a control signal supplied from the printed circuit board.

The heat sink 116 is bonded to the panel 112 by the double-sided adhesive tape 130 to support the panel 112 and to dissipate heat generated when the panel 112 is driven.

As the material of the heat sink 116, a metallic material having high thermal conductivity, for example, aluminum, is used to efficiently dissipate heat generated from the panel 112. The heat dissipation plate 116 is provided with a protrusion 118 on which the printed circuit board 150 is stacked. These protrusions 118 are formed with holes not shown. A screw 154 penetrates the hole formed in the protrusion 118 and the hole 152 formed in the printed circuit board 150 to fasten the printed circuit board 150 to the heat sink 116.

In addition, four corners of the heat sink 116 are formed with a guard 114 protruding from the heat sink 116. At least one hole 125 is formed in the guard 114, and a screw 135 penetrates the hole 125 to fix the heat sink 116 to the back cover 120.

The double-sided adhesive tape 130 applied to the plasma display panel according to the first embodiment of the present invention is composed of a thermal conductive material layer 132 and an adhesive material layer 134 as shown in FIG.

The adhesive material layer 134 is formed with the thermal conductive material layer 132 interposed therebetween. A portion of the double-sided adhesive tape 130 is adhered between the panel 112 and the heat sink 116 so that the panel 112 and the heat sink 116 are bonded to each other, and then the length of the double-sided adhesive tape 130 is extended from the double-sided adhesive tape 130. The portion 135 is bent in a “∩” shape so that the heat sink 116 is adhered to the surface facing the back cover 120. The extension part 135 of the double-sided adhesive tape 130 is bent in a "∩" shape and attached to the heat sink 116, and then the double-sided adhesive tape 130 has a metal plate 140 for increasing the heat radiation efficiency of the heat sink 116. Is attached. The metal plate 140 has a hole formed at a point corresponding to the hole 125 formed in the back cover 120, so that the back cover 120 is fastened by a screw 135.

The printed circuit board 150 supplies a predetermined driving signal to the electrodes of the panel 112. To this end, the printed circuit board 150 includes various driving units, and the printed circuit board 150 and the panel 112 are connected by an FPC (Flexible Printed Circuit) (not shown). A hole 152 is formed in the printed circuit board 150 and fastened to the heat sink 116 by a screw 154.

The cabinet 110 is installed at the front of the panel 112 to protect the panel 112 from external impact and is composed of a glass and a front filter. The front filter is composed of an optical characteristic film, an electromagnetic shield (EMI) shielding film, and an ultraviolet shielding film. The glass protects the front filter from damage from external impact. The optical characteristic film improves the optical characteristics of the plasma display panel by lowering the luminance of red (R) and green (G) and increasing the luminance of blue (B) among the light incident from the panel 112. The electromagnetic shielding film shields electromagnetic waves and prevents electromagnetic waves incident from the panel 112 from being emitted to the outside. The infrared shielding film shields the infrared rays emitted from the panel 112 to prevent the infrared rays above the reference from being emitted to the outside so that signals transmitted using the infrared rays such as a remote controller can be normally transmitted.

When the plasma display panel is shipped, the back cover 120 is installed to surround the plasma display panel. The back cover 120 is coupled to the cabinet 110 to protect the plasma display panel from external shocks and to block electromagnetic waves emitted to the rear surface.

The plasma display panel according to the first embodiment of the present invention radiates heat generated when the panel 112 is driven through the heat dissipation plate 116, and heats the double-sided adhesive tape 130 between the panel 112 and the heat dissipation plate 116. After the adhesive tape 130 is stretched, the elongated portion 135 is bent in a “∩” shape to attach the heat dissipation plate 116 to the surface facing the back cover 120. After that, the metal plate 140 is bonded to the extension 135. A hole is formed in the metal plate 140, and a screw 135 penetrates the hole to fasten the metal plate 140 and the back cover 120. Through this structure, heat of the heat sink 116 may be conducted to the back cover 120 to increase the heat radiation efficiency.

FIG. 7 is a perspective view schematically illustrating an interior of a plasma display panel according to a second exemplary embodiment of the present invention, and FIG. 8 is a schematic cross-sectional view of the plasma display panel shown in FIG. 7 taken along line AA ′. .

7 and 8, the plasma display panel 200 according to the second embodiment of the present invention includes a panel 212, a heat sink 216, a back cover 220, a cabinet 210, A double-sided adhesive tape 230, a metal plate 240, and a printed circuit board 250 are provided.

The panel 212 is composed of a front substrate and a rear substrate (not shown) and phosphors are coated on the rear substrate. The front substrate transmits light generated from the phosphor to display a predetermined image.

The panel 212 is formed with a plurality of driving integrated circuits (hereinafter referred to as "driver ICs") connected to scan electrodes and address electrodes (not shown) for supplying data signals and scan signals, respectively. do. The driver ICs include a scan driver IC and a data driver IC, each of which is installed between the printed circuit board and the panel 212 to supply a driving signal to the panel 212 in response to a control signal supplied from the printed circuit board.

The heat sink 216 is bonded to the panel 212 by the double-sided adhesive tape 230 to support the panel 212 and to dissipate heat generated when the panel 212 is driven.

As the material of the heat sink 216, a metallic material having high thermal conductivity, for example, aluminum, is used to efficiently dissipate heat generated from the panel 212. The heat dissipation plate 216 is provided with a protrusion 218 on which the printed circuit board 250 is stacked. These protrusions 218 are formed with holes not shown. A screw 254 penetrates the hole formed in the protrusion 218 and the hole 252 formed in the printed circuit board 250 to fasten the printed circuit board 250 to the heat sink 216.

In addition, guards 214 protruding from the heat sink 216 are formed at four corners of the heat sink 216. A hole 225 is formed in the guard 214, and a screw 235 penetrates the hole 225 to fix the heat sink 216 to the back cover 220.

As shown in FIG. 9, the double-sided adhesive tape 230 applied to the plasma display panel according to the second embodiment of the present invention includes a heat resistant material layer 232 and an adhesive material layer 234. The adhesive material layer 234 is formed with the heat resistant material layer 232 interposed therebetween. The double-sided adhesive tape 230 is bonded between the panel 212 and the heat sink 216 to bond the panel 212 and the heat sink 216.

In order to transfer heat generated from the panel 212 to the heat sink 216, the metal plate 240 bent in a “∩” shape is inserted between the double-sided adhesive tape of the panel 212. The metal plate 240 is attached to the double-sided adhesive tape 230 at the upper portion of the panel 212 to be in contact with the panel 212 and to the surface of the heat sink 216 facing the back cover 220. The metal plate 240 is provided with a hole 225 at a point corresponding to the hole 225 formed in the back cover 220. The screw 235 passes through the hole 225 formed in the back cover 220 and the hole 225 formed in the metal plate 240 to fasten the back cover 220 and the metal plate 240.

The printed circuit board supplies a predetermined driving signal to the electrodes of the panel 212. To this end, the printed circuit board includes various driving units, and the printed circuit board and the panel are connected by an FPC (Flexible Printed Circuit) (not shown). In the printed circuit board, a plurality of holes (not shown) are formed and fastened to the back cover by screws.

The cabinet 210 is installed at the front of the panel 212 to protect the panel 212 from an external shock and is composed of a glass and a front filter. The front filter is composed of an optical characteristic film, an electromagnetic shield (EMI) shielding film, and an ultraviolet shielding film. The glass protects the front filter from damage from external impact. The optical characteristic film improves the optical characteristics of the plasma display panel by lowering the luminance of red (R) and green (G) and increasing the luminance of blue (B) among the light incident from the panel 212. The electromagnetic shielding film shields electromagnetic waves and prevents electromagnetic waves incident from the panel 212 from being emitted to the outside. The infrared shielding film shields the infrared rays emitted from the panel 212 to prevent the infrared rays above the reference from being emitted to the outside so that signals transmitted using the infrared rays such as a remote controller can be normally transmitted.

When the plasma display panel 200 is shipped, the back cover 220 is installed to surround the plasma display panel. The back cover 220 is fastened to the cabinet 210 to protect the plasma display panel from external shocks and to block electromagnetic waves emitted to the rear surface.

The plasma display panel 200 according to the second embodiment of the present invention radiates heat generated when the panel 212 is driven through the heat sink 216, and double-sides the tape 212 and the heat sink 216 with a double-sided adhesive tape ( After bonding to 230, the metal plate 240 bent in a “∩” shape is inserted between the panel 212 and the face adhesive tape 230. The bent metal plate 240 is bonded by the double-sided adhesive tape 230 to contact the panel 212 and to the surface of the heat sink 216 facing the back cover 220. A hole 225 is formed in the metal plate 240 to be fastened to the back cover 220 by a screw 235. Through this structure, the heat of the heat sink 216 may be conducted to the back cover 220 to increase the heat radiation efficiency.

As described above, the plasma display panel according to the embodiments of the present invention dissipates heat generated when the panel is driven through the heat sink, and combines the panel and the heat sink using double-sided adhesive tape, and the back cover and the heat sink face each other. Bond or contact the metal plate to the heat sink surface. By bringing the metal plate into contact with the back cover, the heat of the heat sink can be conducted to the back cover to increase the heat dissipation area, thereby improving heat dissipation efficiency.

In addition, since a separate blower is not required to dissipate heat generated inside the plasma display panel, noise caused by the blower can be prevented and manufacturing cost can be reduced by removing additional devices.

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 (13)

Display panel, A back cover surrounding the back of the display panel; A double-sided adhesive tape attached to a rear surface of the display panel; An elongate portion extending from one side of the double-sided adhesive tape, And a metal plate bonded to the extension part and transferring heat transferred from the display panel through the double-sided adhesive tape to the back cover. The method of claim 1, A heat dissipation plate bonded to the display panel by the double-sided adhesive tape to support the display panel and to dissipate heat transferred through the double-sided adhesive tape; And a printed circuit board mounted on a rear surface of the heat sink and mounted with driving circuits for driving the display panel. The method of claim 1, And the extension part is bent in a “∩” shape to be adhered to one side of the side and back of the frame. The method of claim 2, At least one hole is formed in the metal plate in contact with one side of a side and a rear surface of the frame. The method of claim 4, wherein At least one hole is formed in a position of the back cover at a position corresponding to the hole formed in the metal plate. The method of claim 5, wherein And the screw penetrates the hole formed in the metal plate and the hole formed in the back cover to fasten the metal plate and the back cover. Display panel, A back cover surrounding the back of the display panel; A double-sided adhesive tape attached to a rear surface of the display panel; A metal plate that is bent into a “∩” shape and inserted between the display panel and the double-sided adhesive tape to transfer heat of the display panel to the back cover; And an elongate portion extending from one side of the metal plate. The method of claim 7, wherein A heat dissipation plate bonded to the display panel by the double-sided adhesive tape to support the display panel and to dissipate heat transferred through the metal plate; And a printed circuit board mounted on a rear surface of the heat sink and mounted with driving circuits for driving the display panel. The method of claim 7, wherein And a screw for fastening the back cover to the metal plate. The method of claim 8, And the extension part is bent in a “∩” shape so as to be in contact with one side of a side and a rear surface of the frame. The method of claim 9, At least one hole is formed in the metal plate in contact with one side of a side and a rear surface of the frame. The method of claim 11, At least one hole is formed in a position of the back cover at a position corresponding to the hole formed in the metal plate. The method of claim 12, And the screw penetrates the hole formed in the metal plate and the hole formed in the back cover to fasten the metal plate and the back cover.