Display Device Crack Detection Pattern in Compensation Layer Groove
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Solution Overview
Problem
Display panels often experience cracks during the formation of holes for exposing electronic modules, which can compromise the integrity and functionality of the device.
Innovation Solution
A display device design featuring a through-hole structure with a compensation layer and a crack detection pattern in a groove on the top surface of the compensation layer, surrounding the hole to enhance crack detection sensitivity and prevent crack propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a through-hole is formed in the display panel to expose the electronic module, then the electronic module can be accessed and function properly, but cracks may occur in the display panel during hole formation
Solution Approach 1:
The crack detection pattern is formed in advance within the compensation layer before the through-hole is created. This preliminary positioning of the detection pattern in the high-stress zone allows for proactive monitoring of crack development during and after the hole formation process, enabling early detection before structural failure occurs.
Solution Approach 2:
The compensation layer serves as an intermediary element between the through-hole structure and the crack detection pattern. By embedding the detection pattern within this intermediate layer, the system can detect cracks without interfering with the through-hole's primary function of exposing the electronic module, thus maintaining both accessibility and structural integrity.
2Measurement precision
If the crack detection pattern is positioned in the groove on the compensation layer surrounding the through-hole, then crack detection sensitivity is improved, but the device structure becomes more complex
Solution Approach 1:
The crack detection pattern is strategically positioned only in the groove surrounding the through-hole, where cracks are most likely to occur. This localized placement concentrates the detection capability precisely where it is most needed, maximizing crack detection sensitivity without requiring the entire display panel structure to be modified or monitored.
Solution Approach 2:
The crack detection pattern is merged with the compensation layer structure, integrating the detection function into the existing layered architecture of the display panel. This integration allows the detection pattern to be formed as part of the normal manufacturing process without adding separate, complex monitoring systems to the device.
Data Source
AI summary
A display device includes: a display panel including a base layer, a circuit layer, a display element layer, and an encapsulation layer, wherein a through-hole passes through the base layer, the circuit layer, the display element layer and the encapsulation layer; a compensation layer disposed on the encapsulation layer, wherein the compensation layer is adjacent to the through-hole; and a crack detection pattern disposed in a groove on a top surface of the compensation layer.