Display Substrate Insulating Layer Opening Density Control
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Solution Overview
Problem
Display apparatuses face challenges in achieving uniform luminance and resolution across different areas due to varying pixel densities and arrangements, leading to visible interfaces between distinct display regions.
Innovation Solution
A display device with a substrate divided into areas, each with specific pixel electrode arrangements and insulating layers having varying openings to control pixel density and luminance, minimizing the visibility of interfaces by adjusting the number and size of openings in the insulating layer to match the pixel density between areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pixels are arranged with high density in a first area and low density in a second area to provide different functionalities, then various functionalities are added to the display apparatus, but luminance difference and resolution disparity occur between the first area and the second area
Solution Approach 1:
The insulating layer is configured with different opening densities in different regions: a first insulating layer with first openings in the first area, a second insulating layer with second openings in the second area, and a third insulating layer with third openings in the third area. This local differentiation allows each region to have optimized pixel density for its specific functionality while maintaining overall display uniformity.
Solution Approach 2:
A third area with a third insulating layer is introduced as an intermediary region between the first area (first insulating layer) and the second area (second insulating layer). The third insulating layer has opening characteristics that gradually transition between the first and second insulating layers, reducing the luminance difference and making the interface less noticeable.
2Adaptability or versatility
If pixels are arranged with high density in a first area and low density in a second area to provide different functionalities, then various functionalities are added to the display apparatus, but resolution disparity occurs between the first area and the second area
Solution Approach 1:
Different insulating layers are used in different regions to achieve local optimization of pixel density. The first insulating layer provides high pixel density for the first area, the second insulating layer provides low pixel density for the second area, and the third insulating layer provides transitional density for the third area, thereby resolving resolution disparity while maintaining functionality.
Solution Approach 2:
The display area is segmented into three distinct regions (first area, second area, and third area), each with its own insulating layer configuration. This segmentation allows independent optimization of pixel density in each region, enabling different functionalities in different areas while maintaining overall resolution uniformity.
3Illumination intensity
If the number of openings in the insulating layer is increased to match pixel density between areas, then luminance difference is reduced, but the structure becomes more complex
Solution Approach 1:
The insulating layer structure is segmented into three distinct layers (first, second, and third insulating layers) with different opening configurations. This segmentation allows each layer to be independently optimized for its specific region, achieving luminance uniformity across different display areas while managing structural complexity through modular design.
Data Source
AI summary
A display apparatus includes: a substrate including a first area, a second area, and a third area that is between the first area and the second area; a plurality of first to third display elements respectively arranged in the first to third areas, each of the plurality of first to third display elements including a pixel electrode; and an insulating layer including a plurality of first to third openings that respectively expose at least portions of the pixel electrodes of the plurality of first to third display elements. A number of the plurality of first openings is greater than a number of the plurality of second openings per unit area. In a plan view, an area of the plurality of first openings is greater than an area of the plurality of third openings.