PCB (printed circuit board), laminating method for PCB and COF (chip on FPC (flexible printed circuit)), as well as liquid crystal display device

A liquid crystal display device, printed circuit board technology, applied in the structural connection of printed circuits, printed circuits, printed circuits, etc., can solve problems such as difficulty, failure to use normally, defective products, etc., to reduce deformation accumulation and improve connection accuracy sexual effect
CN102858097AInactive Publication Date: 2013-01-02SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
Publication Date
2013-01-02
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a PCB (printed circuit board), a connecting method for the PCB and a COF (chip on FPC (flexible printed circuit)), as well as a liquid crystal display device. The connecting method comprises the following steps: A, a clearance groove / clearance grooves is / are arranged at one side or two sides of a laminating area / laminating areas of the PCB, wherein the PCB and the COF are laminated on the laminating area / laminating areas; B, a high-temperature laminating cutter bit is used for laminating the COF and the printed circuit board assembly (PCBA), so that the COF and the PCBA are connected on the laminating area / laminating areas. According to the invention, as the clearance grooves are arranged at the two sides of the laminating areas at which the PCBA and the COF are laminated, so that the two sides of the laminating area / laminating areas of the PCBA are not affected by the high temperature of the laminating cutter bit, thereby avoiding the defect that the distortion of the PCB at the two sides is accumulated on the PCB on the laminating area / laminating areas so that large displacement of golden fingers on the laminating area / laminating areas can be caused and ensuring the connection accuracy of a leading wire of the COF and the golden fingers on the PCBA.
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Description

technical field

[0001] The invention relates to the field of liquid crystal display devices and manufacturing, more specifically, to a printed circuit board, a method for laminating it with a flexible circuit board, and a liquid crystal display device. Background technique

[0002] In today's liquid crystal display manufacturing process, it often involves the interconnection between the flexible circuit board (COF, Chip on FPC) and the printed circuit board (PCB), and the interconnection between the display electrode and the flexible circuit. In these connections, the anisotropic conductive film is widely used, placed between the parts to be connected, and then pressurized and heated to form a stable and reliable mechanical and electrical connection between the parts.

[0003] figure 1 Shown is a schematic diagram of a current liquid crystal display driver printed circuit board assembly (PCBA) 100 . The printed circuit board assembly 100 is provided with a golden finger ar...

Claims

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