Display Substrate Light-Shielding Pattern for Image Blur Reduction
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Solution Overview
Problem
In small-sized high-resolution display products, the light extraction structure causes image blurring due to light rays exiting through adjacent pixels, as the distance between pixels is small, leading to inefficient light extraction and image quality issues.
Innovation Solution
A display substrate design featuring a light-shielding pattern on the side of the pixels, overlapping with the gap between adjacent pixels, and a light extraction structure that directs light away from the pixels, preventing light from being emitted through adjacent pixels, while also using a touch electrode as a light-shielding pattern to reduce image blurring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a light extraction structure is disposed on the light-emitting side of the display substrate, then light extraction efficiency is improved, but light exits through adjacent pixels causing image blur
Solution Approach 1:
The light-shielding pattern is segmented into multiple light-shielding portions, each corresponding to a gap between adjacent pixels. This segmentation allows precise control of light blocking in specific regions without affecting the entire display area, thereby preventing image blur while maintaining light extraction efficiency.
Solution Approach 2:
The light-shielding pattern is positioned only in specific regions where gaps between pixels are located, rather than uniformly across the entire display. This localized approach ensures that light extraction is enhanced in pixel areas while light blocking is applied only where needed to prevent adjacent pixel interference.
2Measurement precision
If the distance between pixels is reduced in small-sized high-resolution display products, then resolution is improved, but light rays from light extraction structure exit through adjacent pixels causing image blur
Solution Approach 1:
The light-shielding pattern is divided into multiple discrete light-shielding portions positioned at gap locations between adjacent pixels. This segmentation enables effective light control in high-resolution displays where pixel density is high, preventing light from one pixel from bleeding into adjacent pixels and causing image blur.
Solution Approach 2:
The light-shielding pattern acts as an intermediary element positioned between adjacent pixels to control light propagation. It selectively blocks light rays that would otherwise exit through adjacent pixels while allowing light from the intended pixel to pass through, thus maintaining image quality in high-resolution displays.
3Manufacturing precision
If a light-shielding pattern is added to prevent light from exiting through adjacent pixels, then image blur is prevented, but device complexity increases
Solution Approach 1:
The light-shielding pattern is designed to serve multiple functions: it blocks light from exiting through adjacent pixels to prevent image blur, and it is positioned to work effectively with the light extraction structure. This multi-functional design prevents image quality degradation without requiring additional separate components.
Solution Approach 2:
The light-shielding pattern is integrated with the existing display substrate structure, combining the light blocking function with the overall device architecture rather than adding a completely separate component. This merging approach minimizes the increase in device complexity while achieving the desired light control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves light extraction efficiency and prevents image blurring by effectively shielding light rays from being emitted through adjacent pixels, maintaining the aperture ratio and enhancing the overall image quality of small-sized display products.
Implementation Method 1
a light extraction structure arranged at a light-emitting side of the pixel... a light-emitting direction of the light extraction structure is a direction of the light extraction structure away from the pixels
Implementation Method 2
a light-shielding pattern at a side, away from the base substrate, of the pixels... an orthographic projection of the light-shielding pattern on the base substrate is overlapped with an orthographic projection of a gap between adjacent pixels on the base substrate
Data Source
AI summary
A display substrate, a method for forming a display substrate, and a display device are provided. The display substrate includes: a plurality of pixels arranged in an array on a base substrate; a light-shielding pattern at a side, away from the base substrate, of the pixels, and an orthographic projection of the light-shielding pattern on the base substrate is overlapped with an orthographic projection of a gap between adjacent pixels on the base substrate; a light extraction structure arranged at a light-emitting side of the pixel and a side of the light-shielding pattern adjacent to the base substrate, a light-emitting direction of the light extraction structure is a direction of the light extraction structure away from the pixels, and an orthographic projection of the light extraction structure on the base substrate is overlapped with an orthographic projection of the pixels on the base substrate.