一种具有抗干扰结构的隐藏式触摸COG VA液晶模组

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By setting a bracket in the VA LCD module to isolate the CTP touch layer and the LCD display layer, and combining an independent FPC connector and IIC communication interface, the signal interference problem between the LCD IC and CTP IC is solved, improving the stability and accuracy of the touch function.

CN224519078UActive Publication Date: 2026-07-17HEYUAN SIBI ELECTRONICS

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: HEYUAN SIBI ELECTRONICS
Filing Date: 2025-07-21
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

In traditional VA LCD modules, signal interference between the LCD IC and CTP IC is a prominent issue, leading to reduced stability and accuracy of the touch function.

Method used

By setting a bracket in the vertical direction to isolate the CTP touch layer and the LCD display layer, an air gap electrostatic shielding layer is formed. An independent FPC connector is used, combined with an IIC communication interface and a TVS diode, to block the electromagnetic coupling path and reduce signal interference.

Benefits of technology

It effectively reduces signal interference between the LCD display layer and the CTP touch layer, improving the stability and accuracy of the touch function.

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Abstract

本实用新型公开了一种具有抗干扰结构的隐藏式触摸COG VA液晶模组，包括外框，所述外框的内壁安装有液晶模组本体，所述液晶模组本体由盖板玻璃、CTP触控层、LCD显示层以及背光层构成，所述CTP触控层和所述LCD显示层上分别设有独立的FPC连接器，所述盖板玻璃和所述LCD显示层之间设有支架，所述CTP触控层由CTP FPC和ITO导电层共同构成，所述LCD显示层由LCD面板和LCD FPC共同构成。本实用新型提供的具有抗干扰结构的隐藏式触摸COG VA液晶模组具有有效阻断电磁耦合路径，降低信号干扰的技术效果。

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Claims

1. A hidden touch COG VA liquid crystal module with anti-interference structure, comprising an outer frame (1), characterized in that, The inner wall of the outer frame (1) is equipped with a liquid crystal module body (2). The liquid crystal module body (2) is composed of a cover glass (201), a CTP touch layer (202), an LCD display layer (205), and a backlight layer (206). The CTP touch layer (202) and the LCD display layer (205) are respectively provided with independent FPC connectors. A bracket (203) is provided between the cover glass (201) and the LCD display layer (205). 2.The hidden touch COG VA liquid crystal module with anti-interference structure according to claim 1, wherein, The CTP touch layer (202) is composed of a CTP FPC and an ITO conductive layer (3), and the LCD display layer (205) is composed of an LCD panel (204) and an LCD FPC. 3.The hidden touch COG VA liquid crystal module with anti-interference structure according to claim 2, wherein, The LCD FPC is attached to the bottom of the LCD panel (204), and the CTP FPC is attached to the bottom of the cover glass (201).

4. The hidden touch COG VA liquid crystal module with anti-interference structure according to claim 1, characterized in that, The bracket (203) is a rectangular ring frame structure, and the bracket (203) is made of high-strength plastic. The vertical distance between the CTP FPC and the LCD FPC is 0.5mm.

5. The hidden touch COG VA liquid crystal module with anti-interference structure according to claim 4, characterized in that, Both the CTP FPC and the LCD FPC use the IIC communication interface.

6. The hidden touch COG VA liquid crystal module with anti-interference structure according to claim 5, characterized in that, A TVS diode is added to the output end of the FPC connector.

7. The hidden touch COG VA liquid crystal module with anti-interference structure according to claim 1, characterized in that, The outer frame (1) is composed of an upper frame (101) and a lower frame (102), and the upper frame (101) and the lower frame (102) are fixed together by screws.