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Flexible printed circuit board, display panel and display device

A flexible circuit board, display panel technology, applied in nonlinear optics, instruments, optics, etc., can solve the problem of low operation convenience, achieve the effect of high operation convenience and reduce detection time

Active Publication Date: 2020-12-04
HKC CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a flexible circuit board, a display panel and a display device for the problem of low operational convenience of the traditional COF lamination detection method.

Method used

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  • Flexible printed circuit board, display panel and display device
  • Flexible printed circuit board, display panel and display device
  • Flexible printed circuit board, display panel and display device

Examples

Experimental program
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Embodiment Construction

[0022] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Preferred embodiments of the application are shown in the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the application more thorough and comprehensive.

[0023] see figure 1 , a flexible circuit board, comprising a substrate body 100; soldering leads 200; short-circuiting traces 300, the short-connecting traces 300 and the soldering leads 200 are arranged on the same surface of the substrate body 100, and the short-circuiting traces 300 are used to connect external Test pad 500; insulation layer (not shown in the figure), the theater layer covers the short-circuit trace 300 and the welding...

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PUM

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Abstract

The application relates to a flexible circuit board, a display panel and a display device. The flexible circuit board is provided with a substrate body and reserved cables, wherein the reserved cablesare connected with short-circuit cables; the projections of the reserved cables on the substrate body intersect with bonding leads; and the short-circuit cables are used for connecting external testpads. Only corresponding bonding leads need to be bonded with the reserved cables in the case of cable defects, so that corresponding signals are output to the external test pads through the reservedcables and the short-circuit cables for analysis and judgement, and causes leading to straight line defects are determined. Compared with a traditional detection method, the invention has the advantages that the flexible circuit board does not need to be removed; the detection time is effectively shortened; and the advantage of high convenience in operation is achieved during the analysis of cabledefects.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a flexible circuit board, a display panel and a display device. Background technique [0002] In a thin film transistor liquid crystal display (Thin Film Transistor-Liquid Crystal Display, TFT-LCD), a chip on film substrate (Chip On Film, COF) is usually used to connect a printed circuit board (PCB) and a liquid crystal panel together, Therefore, the PCB board can output the driving control signal to the liquid crystal panel to complete the corresponding driving control. The COF substrate has a welding lead (bonding lead), one end of the welding lead is connected to the PCB board, and the other end is connected to the substrate body of the COF substrate. [0003] In the actual production process, it often occurs that the vertical line or the horizontal line is poor due to poor lamination process. In order to detect the cause of the failure, the traditional method is t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1345
CPCG02F1/1345
Inventor 黄世帅
Owner HKC CORP LTD