Hole-Area Display Panel Crack Detection and Bypass Electrode Layout
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Solution Overview
Problem
Existing display devices face issues with reliability due to cracks and damage in the display panel, particularly around functional elements like cameras, which can compromise the integrity and functionality of the device.
Innovation Solution
Incorporation of a crack detection pattern and bypass lines around the hole area in the display panel, along with a specific configuration of sensing electrodes and connection patterns to enhance structural integrity and sensing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If holes are defined in the display panel for functional elements, then functionality is improved, but structural integrity deteriorates
Solution Approach 1:
The display panel is segmented into multiple regions including display areas, non-display areas, and hole areas for functional elements. This segmentation allows each region to be optimized independently, maintaining overall structural integrity while accommodating various functionalities in specific locations.
Solution Approach 2:
Different regions of the display panel are assigned different properties and functions. The hole areas containing functional elements have localized structural characteristics that differ from the main display areas, allowing the panel to maintain strength in critical regions while providing functionality where needed.
2Measurement precision
If sensing electrodes are added to sense external input, then sensing capability is improved, but device complexity increases
Solution Approach 1:
The sensing electrodes are integrated into the existing display structure, merging the sensing function with the display panel architecture. This combination approach allows sensing capability to be added without proportionally increasing overall device complexity, as the sensing layers are incorporated within the same structural framework as the display elements.
3Reliability
If crack detection pattern is incorporated, then reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The crack detection pattern is incorporated into the display panel structure during the manufacturing process, before the product is put into service. This preliminary incorporation of the detection mechanism allows for reliable crack detection without adding complex post-manufacturing assembly steps, as the detection pattern is formed as part of the panel's base structure.
Data Source
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AI summary
A display device includes a display panel including a hole area, a display area around the hole area, and a non-display area around the display area, a first-first insulating layer disposed in the hole area, sensing electrodes disposed on the display area, a crack detection pattern disposed on the first-first insulating layer in the hole area, a crack detection line disposed on the non-display area, and a connection pattern disposed in a first sensing electrode of the sensing electrodes disposed on the display area to be insulated from the sensing electrodes, and connected to the crack detection pattern and the crack detection line, the first sensing electrode being disposed between the hole area and the non-display area. An edge of the first-first insulating layer disposed at a boundary between the display area and the hole area has a step structure of at least two steps.