Radiating sheet and PDP panel

• US 6,794,026 B2
• Filed: 07/12/2002
• Issued: 09/21/2004
• Est. Priority Date: 07/13/2001
• Status: Expired due to Fees

• Current Assignee: Mochida Corporation
• Original Assignee: Mochida Corporation
• Inventors: Takahashi, Masahiko, Tatsuzawa, Masao, Ebihara, Fumitaka
• Primary Examiner(s): Morris, Terrel
• Assistant Examiner(s): Vo, Hai
• Application Number:
  US10/194,701
• Publication Number:
  US 20030017320A1
• Time in Patent Office: 802 Days
• Field of Search: 428/317.9, 428/317.1, 428/317.7, 428/319.1, 428/447, 428/423.1, 428/425.5, 428/425.6, 428/425.8
• US Class Current: 428/319.1
• CPC Class Codes: B32B 15/046 of foam
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: B32B 2266/0278 Polyurethane
• CPC Class Codes: B32B 5/18 characterised by features of a layer of foamed material
• CPC Class Codes: H01J 2217/492 Details
• CPC Class Codes: H01L 23/3737 Organic materials with or without a thermoconductive filler
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H05K 7/20963 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20972 takes precedence
• CPC Class Codes: Y10T 428/249953 Composite having voids in a component [e.g., porous, cellular, etc.]
• CPC Class Codes: Y10T 428/249955 Void-containing component partially impregnated with adjacent component
• CPC Class Codes: Y10T 428/249982 With component specified as adhesive or bonding agent
• CPC Class Codes: Y10T 428/249985 Composition of adhesive or bonding component specified
• CPC Class Codes: Y10T 428/249986 Void-containing component contains also a solid fiber or solid particle
• CPC Class Codes: Y10T 428/249987 With nonvoid component of specified composition
• CPC Class Codes: Y10T 428/24999 Inorganic
• CPC Class Codes: Y10T 428/31551 Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31598 Next to silicon-containing [silicone, cement, etc.] layer
• CPC Class Codes: Y10T 428/31601 Quartz or glass
• CPC Class Codes: Y10T 428/31605 Next to free metal
• CPC Class Codes: Y10T 428/31663 : As siloxane, silicone or silane

Abstract

To realize uniform heat distribution by adhering a radiating sheet tightly to a radiating element such as a PDP glass panel, and a heat sink such as an aluminum chassis, transfer heat smoothly to the heat sink such as the aluminum, and release foams entrapped between the radiating sheet and radiating element or heat sink efficiently. The radiating sheet is composed by impregnating a radiating material selected from the group consisting of a radiating gel and a radiating grease in a radiating base material having continuous foams, and layers excellent in heat releasing properties such as a silicone gel or an luminum foil may be formed further on the radiating sheet, or cuts may be made into these layers.

Claims

1. A plasma display panel comprising a glass panel, an aluminum panel and a radiating sheet being inserted between the glass panel and the aluminum panel, wherein the radiating sheet comprises a spongiform radiating element which is made of a polyurethane foam impregnated with any one of the radiating materials selected from the group consisting of a silicone grease and an inorganically filled silicone gel.

2. A plasma display panel comprising a glass panel, an aluminum panel and a radiating sheet being inserted between the glass panel and the aluminum panel, wherein the radiating sheet comprises a spongiform radiating element being coated with a radiating material, wherein the spongiform radiating element is made of a polyurethane foam impregnated with any one of the radiating materials selected from the group consisting of a silicone grease and an inorganically filled silicone gel.

3. A plasma display panel comprising a glass panel, an aluminum panel and a radiating sheet being inserted between the glass panel and the aluminum panel, wherein the radiating sheet comprises a spongiform radiating element and an aluminum foil layer adhered to the spongiform radiating element, wherein the spongiform radiating element is made of a polyurethane foam impregnated with any one of the radiating materials selected from the group consisting of a silicone grease and an inorganically filled silicone gel.

4. A plasma display panel comprising a glass panel, an aluminum panel and a radiating sheet being inserted between the glass panel and the aluminum panel, wherein the radiating sheet comprises a spongiform radiating element and an acrylic pressure sensitive adhesive applied to a surface of the spongiform radiating element, wherein the spongiform radiating element is made of a polyurethane foam impregnated with any one of the radiating materials selected from the group consisting of a silicone grease and an inorganically filled silicone gel.

5. A plasma display panel comprising a glass panel, an aluminum panel and a radiating sheet being inserted between the glass panel and the aluminum panel, wherein the radiating sheet comprises a spongiform radiating element which is made of a polyurethane foam impregnated with any one of the radiating materials selected from the group consisting of a silicone grease and an inorganically filled silicone gel, wherein the radiating sheet is further formed with a cut in a surface thereof.