Display Device Insulating Layer Segmentation for Color Mixture
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Solution Overview
Problem
Existing display devices face challenges in achieving high manufacturing yield, suppressing color mixture between adjacent pixels, ensuring high color reproducibility, maintaining thinness, low power consumption, and reliability.
Innovation Solution
A display device structure incorporating a first and second pixel electrode, first and second insulating layers, and an adhesive layer, where the insulating layers have specific openings and projections to enhance adhesion and prevent film separation, and the use of organic and inorganic materials for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional insulating layer structure is used, then the manufacturing process is simple, but film separation occurs and manufacturing yield decreases
Solution Approach 1:
The insulating layer is divided into a first insulating layer and a second insulating layer stacked in sequence. The first insulating layer contains a first opening and the second insulating layer contains a second opening that integrates with the first opening, creating a segmented structure that prevents film separation while maintaining manufacturing feasibility
Solution Approach 2:
The patent introduces openings in the insulating layers that extend in the depth dimension, creating a three-dimensional structure with integrated openings. This dimensional approach allows adhesive material to penetrate and bond across layers, preventing film separation without overly complicating the manufacturing process
2Manufacturing precision
If pixel electrodes are placed close together, then the display resolution is high, but color mixture occurs between adjacent pixels
Solution Approach 1:
The patent extracts or removes the insulating material in specific regions to create openings between adjacent pixel electrodes. These openings act as isolation barriers that prevent color mixture while allowing the pixel electrodes to be positioned closely together for high display resolution
Solution Approach 2:
The openings in the insulating layers serve as intermediary structures between adjacent pixel electrodes. These openings filled with adhesive material act as mediators that physically separate the pixel electrodes, preventing color mixture while maintaining close spacing for high resolution
Data Source
AI summary
To provide a display device with a manufacturing yield and/or a display device with suppressed mixture of colors between adjacent pixels. The display device includes a first pixel electrode, a second pixel electrode, a first insulating layer, a second insulating layer, and an adhesive layer. The first insulating layer includes a first opening. The second insulating layer includes a second opening. The first opening and the second opening are provided between the first pixel electrode and the second pixel electrode. In a top view, a periphery of the second opening is positioned on an inner side than a periphery of the first opening. The adhesive layer has a region overlapping with the second insulating layer below the second insulating layer.