Touch screen and display device including the touch screen

By altering the wiring position of the touch routing line layer in alternating wiring areas and dual wiring areas within the touchscreen, and by using contact holes and line extensions, the problem of resistance deviation in the touchscreen was solved, touch sensing sensitivity was improved, and a narrow bezel design was achieved.

CN122308639APending Publication Date: 2026-06-30LG DISPLAY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LG DISPLAY CO LTD
Filing Date
2025-11-06
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing display devices, there are resistance deviations between the wiring of the touch screen, which leads to increased noise and reduced touch sensing sensitivity, and makes it difficult to achieve a narrow bezel design.

Method used

By setting alternating wiring areas and dual wiring areas in the touch screen, the interlayer wiring position of the first touch routing line layer and the second touch routing line layer is changed, and the resistance difference is adjusted through contact holes and line extensions to ensure that the resistance of adjacent wirings is similar or equal, thereby reducing resistance deviation.

Benefits of technology

It effectively reduces or minimizes the resistance deviation between wirings, improves the performance of the touch screen, enhances touch sensing sensitivity, and enables a narrow bezel design.

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Abstract

This application discloses a touch screen and a display device including the same. The display device includes a display panel configured to display an image and a touch screen disposed on the display panel. The touch screen includes a first touch routing layer, an insulating layer covering the first touch routing layer, a second touch routing layer disposed on the insulating layer, and a plurality of touch routing lines, the plurality of touch routing lines including contact holes configured to interconnect the first touch routing layer and the second touch routing layer. The plurality of touch routing lines include at least two interlayer structure change sections, wherein the interlayer wiring positions of the first touch routing layer and the second touch routing layer are changed.
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