Touch display panel, display device and preparation method thereof

By adjusting the cross-sectional area of ​​the touch line and setting through holes in the conductive layer, the signal uniformity problem caused by inconsistent touch line lengths was solved, improving the uniformity of the transmitted signal and the touch accuracy of the touch display panel.

CN117501219BActive Publication Date: 2026-06-16BOE TECHNOLOGY GROUP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BOE TECHNOLOGY GROUP CO LTD
Filing Date
2022-05-31
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

In the prior art, the different distances between different touch units and the side where the touch integrated circuit is located result in inconsistent touch line lengths, affecting the uniformity of the transmitted signal and reducing touch accuracy.

⚗Method used

By setting the ratio of the cross-sectional area to the length of the touch line to 0.95 to 1.05, the cross-sectional area of ​​the longer touch line is increased to reduce resistance differences. Through-holes are also set on the conductive layer to reduce parasitic capacitance, ensuring that the resistance and parasitic capacitance of each touch line tend to be consistent.

🎯Benefits of technology

It improves the uniformity of the signal transmitted by the touch line and the touch accuracy, reduces the difference in resistance and parasitic capacitance, and improves the overall performance of the touch display panel.

✦ Generated by Eureka AI based on patent content.

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Abstract

The disclosure provides a touch display panel, a display device and a preparation method thereof, and belongs to the technical field of display. The touch display panel comprises a display substrate (10) and a touch layer (20). The touch layer (20) comprises a plurality of touch units (210) and a plurality of touch lines (220) on the display substrate (10). The touch line (220) is connected with at least one touch unit (210), and the touch line (220) is used for electrically connecting the connected touch unit (210) with a touch integrated circuit (30). The plurality of touch lines (220) at least comprises a first wire (221) and a second wire (222) located in a non-display area (102). The length of the first wire (221) is greater than the length of the second wire (222), and the cross-sectional area of the first wire (221) is greater than the cross-sectional area of the second wire (222). The uniformity of the signal transmission of the touch line can be improved.
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