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Touch panel PCD wiring design applied to FMLOC product

A touch panel and product technology, applied in computer-aided design, special data processing applications, calculations, etc., can solve the problem of low efficiency of device crack crack inspection, increase the detection range, increase the detection rate, and reduce the resistance. Effect

Pending Publication Date: 2022-05-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the above-mentioned problems or deficiencies, in order to solve the problem of low efficiency of the existing PCD for device crack inspection, the present invention provides a touch panel PCD wiring design applied to FMLOC products, so as to more comprehensively inspect FMLOC products Crack in the display area

Method used

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  • Touch panel PCD wiring design applied to FMLOC product
  • Touch panel PCD wiring design applied to FMLOC product
  • Touch panel PCD wiring design applied to FMLOC product

Examples

Experimental program
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Effect test

Embodiment 1

[0031] 1) Use the TMA layer to design the PCD wiring in the Panel AA area, remove the Trace wiring TMA layer, and leave only the trace wiring of the TMB layer on the periphery. Because the TMA only has a graphic design pattern at the bridging key in the AA area, such as Figure 5 , the PCD traces of the TMA layer can be designed to the periphery of the Panel and the AA area, and the PCD traces of the TMA layer in the AA area can be designed under the TMB graphic design pattern, which has no effect on the trace design and touch performance, greatly increasing detection range, such as Figure 6 shown. The PCD traces of the FMLOC layer and the PCD traces of the BP layer are designed together, so that cracks occurring in the BP / package / FMLOC film layer can all be detected.

Embodiment 2

[0033] In the AA area, the TMA layer is used to design the PCD detection wiring, which is the same as the first embodiment. Trace traces use TMA and TMB overlapping traces, such as Figure 7 As shown, the TMA layer of the trace trace at the intersection of the PCD and the trace trace is designed to be hollowed out, and other areas are connected to the TMB through vias, which can also reduce the resistance of the trace trace.

[0034] Figure 9 It shows that when the gap between the pixel arrangements is a straight line, the PCD routing is a straight line; when the gap between the pixel arrangements is a broken line, the PCD routing is a broken line, and the routing is performed according to different pixel structures.

[0035] Visible by above embodiment: the present invention designs PCD routing by utilizing the TMA layer of FMLOC, and this PCD routing layout range is mainly in AA area, avoids the design figure of AA area at the bridging key place; By TMA layer routing, to T...

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Abstract

The invention belongs to the technical field of organic light-emitting display, and particularly relates to a touch panel PCD wiring design applied to an FMLOC product. The PCD routing of the TMA layer is designed to be within the range of the Panel periphery and the AA area, the PCD routing of the TMA layer in the AA area is designed to be below the TMB design graph, and the design graph of the AA area at the bridging key is avoided in a straight line, broken line and / or curve mode; through TMA layer routing, TMB routing design and touch performance are not affected, and the detection range is greatly increased. TMA and TMB overlapping wiring is adopted in the trace wiring, a TMA layer of the trace wiring at the crossing position of the PCD and the trace wiring is designed to be hollowed out, and other areas are connected with the TMB through via holes so as to reduce the resistance of the trace wiring. According to the PCD routing, the Crack detection range is increased from the outermost periphery of the Panel panel to the area from the edge of the Panel panel to the AA area, and the Crack detection rate, especially the PCD Crack in a right-angle bending area, is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of organic light emitting displays, and in particular relates to a design of PCD wiring of a touch panel applied to FMLOC products. Background technique [0002] Active matrix organic light-emitting diode AMOLED display is a device used to display images and colors. It is widely used in mobile phones and computers. During the production process of flexible OLED substrates, cracks will occur due to foreign objects or external forces. Especially after the bonding (referring to the bonding of the panel and the protective cover glass) or bending, the film layer is more likely to produce Crack due to the influence of stress. Therefore, the panel crack defect detection PCD (Panel Crack Defection) wiring will be designed outside the display area of ​​the display panel to conduct Crack inspection to ensure product yield. PCD uses BP (Back Panel backplane circuit) layer metal wiring. Due to the limitation of periphe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/394
CPCG06F30/394
Inventor 汪锐向勇胡潇然张千
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA