Display module and display device
By setting up a detection circuit in the non-display area of the display panel and using detection capacitors and signal lines to monitor electrochemical corrosion, early warning of functional circuits is achieved, solving the corrosion problem caused by water vapor in high temperature and high humidity environments and avoiding display abnormalities.
CN116206543BActive Publication Date: 2025-09-26WUHAN TIANMA MICRO ELECTRONICS CO LTD
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Patent Information
- Application Number
- CN202310294045.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-03-23
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2043-03-23
AI Technical Summary
Technical Problem
In a high temperature and high humidity environment, water vapor can easily enter from the non-display area of the display panel, causing corrosion of the functional circuits and display abnormalities.
Method used
A detection circuit is set in the non-display area. The detection circuit includes a detection unit. The detection unit is provided with the same via structure as the functional circuit. Electrochemical corrosion is monitored by detecting capacitors and signal lines to achieve early warning of the functional circuit.
Benefits of technology
Detect corrosion risks of functional circuits in advance to avoid display abnormalities and reduce circuit damage caused by corrosion.
✦ Generated by Eureka AI based on patent content.
Abstract
An embodiment of the present invention provides a display module and a display device. The non-display area of the display module includes a functional circuit and a detection circuit. The detection circuit includes a detection unit. The detection unit is located on the side of the functional circuit away from the display area. The functional circuit includes a first via structure. The first via structure includes a first conductive part and a first metal part. The first conductive part is connected to the first metal part through a first via. The detection unit includes an electrode part, a first sub-part, and a second sub-part. The first sub-part and the first conductive part are of the same layer and material, the second sub-part and the first metal part are of the same layer and material, and the first sub-part is connected to the second sub-part through a first detection via. One of the first sub-part and the second sub-part at least partially overlaps with the electrode part to form a capacitor. The first signal line and the second signal line in the detection circuit are respectively coupled to the two ends of the series circuit formed by the capacitor and the first detection via. The present invention can use the detection circuit to provide an early warning of hole corrosion in the functional circuit.
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