Array substrate and display device

By arranging a first shield electrode that overlaps the data line and the common electrode in the array substrate of the liquid crystal display and connecting it to the DC voltage signal, the problem of common electrode signal interference is solved and the uniformity of the common electrode voltage and the picture are achieved. Stablize.

CN114879422AInactive Publication Date: 2022-08-09GUANGZHOU CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
8 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
Filing Date
2022-05-25
Publication Date
2022-08-09
Estimated Expiration
Not applicable Β· inactive patent

AI Technical Summary

Technical Problem

In FFS and IPS display modes, the common electrode of the LCD monitor overlaps with the data line, resulting in coupling capacitance, causing common electrode signal interference and poor display problems such as screen flickering.

Method used

By arranging the first shielding electrode in the array substrate to overlap the data line and the common electrode, and connecting it to the DC voltage signal output terminal, a weak electric field or no electric field is formed to prevent the data voltage signal on the data line from affecting the common electrode. Signal.

Benefits of technology

It effectively avoids the interference of the common electrode signal, maintains the uniformity of the common electrode voltage, and prevents the occurrence of picture flickering.

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Abstract

The invention provides an array substrate and a display device, and the array substrate comprises a substrate; the gate insulating layer is arranged on the substrate; the data line is arranged on the gate insulating layer; the first passivation layer is arranged on the gate insulation layer and covers the data line; the first shielding electrode is arranged on the first passivation layer, and the first shielding electrode is connected with the direct-current voltage signal output end; the second passivation layer is arranged on the first passivation layer and covers the first shielding electrode; the common electrode is arranged on the second passivation layer, and a part of the common electrode is overlapped with the data line and the first shielding electrode; the pixel electrode and the common electrode are arranged on the same layer or stacked, and the pixel electrode is insulated from the common electrode. The first shielding electrode is connected to the direct-current voltage signal, so that the data voltage signal on the data line does not affect the signal on the common electrode, coupling capacitance between the common electrode and the data line is avoided, and poor display of picture flicker is avoided.
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Citation Information

Patent Citations

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    CN101290446A

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  • Thin film transistor array substrate and preparation method thereof, display panel and display device

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