Graphite composite heat conducting sheet

A heat-conducting sheet and graphite sheet technology, used in cooling/ventilation/heating transformation, discharge lamps, discharge tubes, etc., can solve the problems of poor uniformity of heat dissipation, and achieve convenient coating, high thermal conductivity, and satisfactory fit The effect of strength requirements

Inactive Publication Date: 2009-07-22
西安东旺精细化学有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0011] The purpose of the present invention is to provide a graphite composite heat conduction sheet, which solves the technical problems of large-area heat dissipation and poor uniformity of heat conduction in the background art

Method used

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  • Graphite composite heat conducting sheet
  • Graphite composite heat conducting sheet
  • Graphite composite heat conducting sheet

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Embodiment Construction

[0038] Thermal conductivity and temperature distribution uniformity are important factors affecting image quality and lifetime of large flat panel displays. If the heat-conducting material can quickly transfer the heat from all parts of the large flat-panel display along the screen, the temperature of the screen can be maintained evenly. At this time, the brightness of each area of ​​the screen is only determined by the control of electrical signals, and the display effect of the screen can reach Ideal state.

[0039] Graphite material has a high in-plane thermal conductivity, which is 30-100 times that of thermally conductive silicone rubber, which can keep the temperature in each area of ​​the large flat panel display uniform and eliminate thermal stress.

[0040] In the present invention, the graphite sheet 1 with high thermal conductivity is used as the heat conduction and heat dissipation material of the thermal device; the flexible heat conduction layer 2 with flexibilit...

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Abstract

The invention relates to a graphite composite conducting strip. At least one side of graphite sheet material thereof is compounded with a flexible conducting layer, wherein the flexible conducting layer is formed by conductive filling which is evenly distributed in a flexible conductive substrate; the conductive filling comprises nanometer conductive filling. The graphite composite conducting strip solves technical problems of poor large-area radiation performance and heat conduction evenness in the background art, has high conducting performance, not only can meet the requirement to the attachment strength of a large flat plate, but also can be completely stripped, and is particularly applicable to radiation of a plasma display panel (PDP), a liquid crystal display screen and other large-area heating devices.

Description

technical field [0001] The invention belongs to flat heat dissipation composite materials, in particular to a graphite composite heat conduction sheet. Background technique [0002] Heat dissipation in large flat panel displays is an important factor affecting image quality and display life. [0003] In a plasma display (PDP), each gas discharge unit is equivalent to a heat source, which generates a lot of heat. If the heat is not dissipated in time, the temperature of the entire screen will rise, causing many adverse consequences. [0004] Since the brightness of the screen is positively correlated with the temperature, a high screen temperature will also cause a decrease in contrast. In the plasma display PDP, the brightness of the active discharge area is high, and the temperature is also high; the brightness of the non-discharge area is low, and the temperature is also low. The screen image changes at any time and instantaneously. When a bright area at a certain momen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J17/28H01J7/24H01J11/02H05K7/20
Inventor 李承孝
Owner 西安东旺精细化学有限公司
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