Display Device Sensing Member Without Organic Layer
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Solution Overview
Problem
Existing display devices with sensing members face issues of increased thickness due to the presence of organic layers, which can lead to permeation by external air and moisture, causing corrosion and reducing the reliability of touch inputs.
Innovation Solution
The solution involves forming a sensing member on the display panel without an organic layer, thereby reducing the number of masks required in the manufacturing process and eliminating the need for a protective organic layer, while using a polarizing member, bending protective layer, and cover film to protect the exposed conductive layers from external elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an organic layer is deposited on the sensing member to protect conductive layers, then the sensing member is protected from external air and moisture, but the thickness of the display device increases
Solution Approach 1:
The patent removes the organic protective layer from the sensing member structure. Instead of depositing an organic layer to protect conductive layers, the invention uses the polarizing member itself as the protective barrier, eliminating the need for separate organic protective layers and thereby reducing overall device thickness while maintaining protection against external air and moisture.
Solution Approach 2:
The polarizing member is given multiple functions: it serves both as the optical polarizing element and as the protective barrier against external air and moisture. This multi-functionality eliminates the need for separate protective organic layers, resolving the contradiction between protection and thickness.
2Reliability
If an organic layer is deposited on the sensing member, then the sensing member is protected from external air and moisture, but the number of masks required in manufacturing increases
Solution Approach 1:
The patent eliminates the organic layer deposition process and associated masks from the manufacturing sequence. By using the polarizing member as the protective barrier instead of depositing organic material, the invention removes unnecessary manufacturing steps and masks, simplifying the fabrication process while maintaining protective functionality.
Solution Approach 2:
The protective function is merged into the polarizing member itself rather than being a separate organic layer. This consolidation eliminates the need for separate deposition processes and masks, reducing manufacturing complexity while achieving the same protective effect.
3Reliability
If multiple layers including organic layers are used in the sensing member, then protection from corrosion is achieved, but the overall thickness of the display device increases
Solution Approach 1:
The patent extracts and removes organic layers from the multi-layer sensing member structure. By eliminating organic protective layers and using only inorganic protective films and the polarizing member for protection, the invention reduces the total number of layers and overall thickness while maintaining corrosion protection.
Solution Approach 2:
The invention uses a composite structure consisting of inorganic protective films and the polarizing member instead of organic materials. This composite approach provides effective corrosion protection with reduced thickness, as inorganic materials offer superior barrier properties per unit thickness compared to organic layers.
Data Source
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AI summary
A display device includes a display member (20) including a substrate (101) and a plurality of light-emitting elements disposed on the substrate (101), a sensing member (30) disposed on the display member (20), and a polarizing member (40) disposed on the sensing member (30). The sensing member (30) includes a sensing insulating layer (310, 330) and a sensing conductive layer disposed on the sensing insulating layer (310, 330). The polarizing member (40) includes a polarizing layer (430) and a polarizing adhesive layer (410) disposed between the polarizing layer (430) and the sensing conductive layer. The polarizing adhesive layer (410) is in contact with the sensing conductive layer.