Array Substrate Aperture Gradients for Uniform Display Luminance
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Solution Overview
Problem
Existing display technologies with under-display cameras face challenges in achieving uniform luminance transitions and minimizing the boundary effect between display regions, leading to non-uniform light emission and visible boundaries.
Innovation Solution
An array substrate design with varying aperture ratios in different display regions, including a first display region, a second display region, and a transition region, where the aperture ratios progressively decrease from the first to the second region, ensuring smooth luminance transitions and reducing boundary effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the aperture ratio is kept constant across all display regions, then the manufacturing process is simple, but the luminance transition between display regions is non-uniform and visible boundaries appear
Solution Approach 1:
The patent applies local quality by differentiating aperture ratios across different display regions. The first display region has a first aperture ratio, the second display region has a second aperture ratio, and the transition region has a third aperture ratio that is between the first and second. This local differentiation ensures uniform luminance transition while maintaining manufacturability through region-specific aperture control.
2Object-affected harmful factors
If the aperture ratio changes abruptly between display regions, then the boundary effect is minimized, but the luminance transition becomes non-uniform and visible boundaries appear
Solution Approach 1:
The patent segments the display region into three distinct zones: first display region, transition region, and second display region. Each segment has a specifically controlled aperture ratio that creates a gradual transition. The transition region acts as an intermediary segment with an aperture ratio between the two display regions, eliminating abrupt changes and visible boundaries.
Solution Approach 2:
The transition region serves as an intermediary between the first and second display regions. It has a third aperture ratio that is intermediate between the first and second aperture ratios, creating a smooth luminance transition. This intermediary region prevents direct abrupt contrast between the two display regions, eliminating visible boundaries.
3Strength
If the metal area is increased to improve structural support, then the mechanical strength is improved, but the transmittance of the under-display camera region decreases
Solution Approach 1:
The patent applies local quality by optimizing metal area distribution across different regions. The transition region has a third aperture ratio that balances structural support needs with light transmittance requirements. This local optimization ensures sufficient metal area for structural strength in critical areas while maintaining high transmittance in the under-display camera region.
Data Source
AI summary
A display panel is provided. The display panel includes a base substrate including a first display region, a second display region, and a transition region disposed between the first display region and the second display region; a first pixel unit disposed in the first display region, wherein the first pixel unit has a first aperture ratio; a second pixel unit disposed in the second display region, wherein the second pixel region has a second aperture ratio; and a third pixel unit disposed in the transition region, wherein the third pixel unit has a third aperture ratio; wherein the first aperture ratio is greater than the second aperture ratio; in a direction pointing from the first display region towards the second display region, the first aperture ratio, the third aperture ratio, and the second aperture ratio progressively decrease.