Array Substrate Crack Detection Around Display Through-Holes
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Solution Overview
Problem
Existing display technologies face challenges in effectively detecting micro cracks on the edge of apertures in display devices, leading to poor display quality and reduced device lifespan.
Innovation Solution
The implementation of an array substrate with an anti-cracking dam, metal lead, and data lines that surround a through-hole, allowing for real-time detection of cracks by observing abnormal sub-pixel displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If on-screen aperture technology is used to increase screen ratio, then display quality and user experience are improved, but micro cracks are prone to appear on aperture edges causing poor display and reduced device lifespan
Solution Approach 1:
The patent applies preliminary action by pre-arranging a detection circuit comprising a metal lead, first data line with first and second sections, and first transistor around the aperture edge before actual use. This detection circuit is positioned to detect micro cracks before they cause display failures, enabling preventive maintenance and quality control.
2Ease of manufacture
If traditional detection methods are used, then manufacturing process is simple, but there is no effective solution for detecting micro cracks on aperture edges
Solution Approach 1:
The patent introduces an intermediary detection circuit as a mediator between the aperture structure and the detection system. The metal lead and data line sections act as intermediaries that translate micro crack occurrences into detectable electrical signals, enabling indirect but effective crack detection without complex direct measurement methods.
3Difficulty of detecting and measuring
If a detection circuit is added to detect cracks, then crack detection capability is improved, but device structure becomes more complex
Solution Approach 1:
The patent applies universality by designing the detection circuit components (metal lead, data line sections, transistor) to serve multiple functions. These components not only detect cracks but also maintain electrical connectivity and integrate with existing display pixel structures, reducing the need for separate dedicated detection components.
Solution Approach 2:
The patent merges the detection circuit with existing display structures by integrating the metal lead and data line sections into the pixel electrode configuration. The first data line with separated sections is combined with the metal lead and transistor to form a unified detection system that leverages existing manufacturing processes.
Data Source
AI summary
An array substrate includes a display area, and the array substrate includes an anti-cracking dam, a metal lead and a first data line, wherein the anti-cracking dam is arranged on a side of the array substrate and located in the display area, and the anti-cracking dam is arranged to surround a through-hole extending through the array substrate; the metal lead is arranged to at least partially surround the anti-cracking dam; the first data line includes a first section and a second section separated from each other by the through-hole; the first section of the first data line is connected to the first end of the metal lead, and the second section of the first data line is connected to the another end of the metal lead.