Thermal pressuring separating type sheets and its mfg. method

A release sheet, manufacturing method technology, applied in the direction of chemical instruments and methods, instruments, layered products, etc., can solve the decline in productivity, the decrease in durability of thermally bonded release sheets, liquid crystal instrument panels, and driving semiconductors damage, etc.

Inactive Publication Date: 2004-05-26
FUJI POLYMER INDUSTRIES CO LTD
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Problems solved by technology

[0005] (1) With the recent increase in the size of liquid crystal instrument panels, the thermal pressing time required to ensure the heat uniformity of the thermal pressing surface is prolonged, so the productivity decreases
[0006] (2) At the same time, since the heater temperature of the heating mold of the thermocompression device is set high, the durab

Method used

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  • Thermal pressuring separating type sheets and its mfg. method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] (1) Glass cloth reinforced conductive fluororesin sheet

[0025] The base material of the glass cloth-reinforced conductive fluororesin sheet, which is a constituent element of the release sheet for thermocompression bonding, uses plain-woven alkali-free glass cloth (weight per unit area: 36g / m 2 ). A compound in which 1.0 parts by weight of carbon black for imparting conductivity was added to 100 parts by weight of polytetrafluoroethylene was coated on the above-mentioned glass cloth, dipped, and fired at 400° C. for 30 minutes. The surface resistance value of the obtained glass cloth reinforced conductive fluororesin sheet is 5×10 5 Ω, a thickness of 0.05 mm, a tensile strength of 40 N / cm, an elongation of 5% or less, and a polytetrafluoroethylene content of 65% by weight. As the glass cloth-reinforced conductive fluororesin sheet, "Honda Flow Fabric" (trade name manufactured by Honda Sangyo Co., Ltd.) can also be used.

[0026] (2) Surface activation treatment of ...

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Abstract

There is a surface activation treated face 3 on at least one face of a glass fiber reinforced electrically conductive fluoro resin sheet 2. A dividing sheet 1 for hot press bonding is obtained by integrating the surface activation treated face 3 of the fluoro resin sheet and a vulcanized heat conductive electrically conductive silicone rubber laminate 4. The manufacturing method the dividing sheet comprises performing a surface activation treatment on at least one side of the glass fiber reinforced electrically conductive fluoro resin sheet 2, and integrating the surface activation treated face 3 of the fluoro resin sheet and the vulcanized silicone rubber laminate 4, in which the laminate was made by impregnating a glass cloth with electrically conductive fluoro resin mixture, sintering to form composite sheet, coating liquid heat conductive electrically conductive silicone rubber on at least one face of the sheet and thermally curing to form integrated laminate. Therefore, a dividing sheet for hot press bonding with high anti-electrostatic effect, excellent dividing capability and high durability can be provided.

Description

technical field [0001] The invention relates to a release sheet for thermocompression bonding. More specifically, it relates to a release sheet for thermocompression bonding that has thermal conductivity and can prevent electrostatic charging. Background technique [0002] When the external connection electrodes of the liquid crystal instrument panel and the external leads of the flexible circuit board (FPC) on which the driving semiconductor is bonded are thermally pressed together through an anisotropic conductive sheet-like adhesive, the heat-pressed separation The molded sheet is sandwiched between the thermocompression die and FPC of the thermocompression device, which can improve the parallelism of the thermocompression bonding surface, and prevent the FPC from adhering to the top of the thermocompression die of the thermocompression device during thermocompression. And be heat-compressed on. [0003] In recent years, as such release sheets for thermocompression bond...

Claims

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Application Information

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IPC IPC(8): B32B7/02B29C65/02B32B17/04B32B33/00B65H39/00G09G3/00
CPCB32B25/02B32B25/08B32B25/20B32B27/20B32B27/322B32B2262/101B32B2264/108B32B2307/202
Inventor 太田浩智
Owner FUJI POLYMER INDUSTRIES CO LTD
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