Electrical testing method and device for liquid crystal display panel

By using an array circuit in the electrical measurement method of the liquid crystal display panel, multiple sets of gate lines and data lines are driven to display red, green and blue solid color pictures, the problem that the prior art cannot achieve multiple jumps in data voltages, and avoiding the defective products entering the subsequent process.

CN119644619APending Publication Date: 2025-03-18TRULY (RENSHOU) HIGH-END DISPLAY TECH LTD
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Patent Information

Application Number
CN202411628158.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-14
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The existing electrical measurement fixtures cannot achieve multiple jumps in one frame, resulting in the inability to drive the pixel structure to display red, green, and blue electrical measurement solid color images, causing the defective products to enter the subsequent process.

Method used

By providing an array circuit, including multiple sets of gate lines, multiple pixel units and multiple data lines, one set of multiple sets of gate lines and corresponding data lines are driven, data is written for all rows of pixels of the same type connected to the same group of gate lines, a test screen is displayed, and the gate lines of the remaining groups are set to a low level until all types of electrical test screens are tested.

Benefits of technology

The electrical test of three solid color pictures is realized, which avoids the subsequent process of LCD display panel NG products, and solves the problem of the inability to display the solid color pictures of red, green and blue.

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Abstract

The invention discloses an electrical testing method and device for a liquid crystal display panel, and the method comprises the steps: providing an array circuit which comprises a plurality of groups of gate lines, a plurality of pixel units and a plurality of data lines, the different pixels of the plurality of pixel units are sequentially and longitudinally arranged, and the same pixels of the plurality of pixel units are sequentially and transversely arranged; and driving one group of the plurality of groups of gate lines and the corresponding data lines, writing data into the same type of pixels of all rows connected with the group of gate lines, displaying a test picture, setting the gate lines of the rest groups as low levels, and driving the gate lines of the rest groups and the corresponding data lines until all types of electrical test pictures are tested. The electric measurement of three pure color pictures is realized, a liquid crystal display panel NG product is prevented from entering a subsequent process, and the problem that red, green and blue electric measurement pure color pictures cannot be displayed is solved.
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