Display Substrate Light-Shielding Layout for VR Light Leakage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-resolution VR products using liquid crystal display panels face issues with light leakage and color crossover due to alignment deviations between display and opposing substrates, affecting display quality and user experience.
Innovation Solution
The display substrate design incorporates first and second signal lines with non-overlapping light-shielding structures and second light-shielding structures between layers, along with precise alignment controls to minimize light leakage and improve transmittance and opening rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If alignment deviation between display and opposing substrates occurs, then manufacturing tolerance is relaxed, but light leakage and color crossover increase
Solution Approach 1:
The patent introduces light-shielding structures as intermediary elements positioned between the pixel electrodes and the opposing substrate. These structures act as a mediator that blocks stray light paths caused by alignment deviations, preventing light leakage and color crossover while allowing the display to tolerate broader alignment tolerances during manufacturing.
Solution Approach 2:
The patent addresses the two-dimensional alignment problem by adding a vertical dimension solution. Instead of relying solely on precise horizontal alignment between substrates, the light-shielding structures extend into the vertical space between layers, creating a three-dimensional solution that blocks light leakage paths without compromising manufacturing precision requirements.
2Object-affected harmful factors
If light-shielding structures are added to reduce light leakage, then display quality improves, but device complexity increases
Solution Approach 1:
The patent merges the light-shielding function with existing structural elements in the display stack. The light-shielding structures are integrated into the same layer system as the signal lines and pixel electrodes, combining multiple functions (signal transmission and light blocking) into a unified structure rather than adding completely separate components.
Solution Approach 2:
The light-shielding structures serve multiple functions simultaneously: they block light leakage, define pixel boundaries, and work cooperatively with the signal line arrangements. This multi-functionality reduces the need for additional dedicated components, thereby limiting the increase in device complexity while achieving light leakage reduction.
3Object-affected harmful factors
If signal lines are arranged in multiple layers with non-overlapping projections, then light leakage reduces, but manufacturing precision requirements increase
Solution Approach 1:
The patent segments the signal line arrangement into multiple layers with non-overlapping orthographic projections. By dividing the signal transmission function across different vertical layers, the design creates distinct horizontal footprints for each layer, reducing light leakage between adjacent pixels while organizing the complexity into manageable segmented sections.
Data Source
AI summary
The display substrate, display device and motherboard include a first base substrate, a plurality of first signal lines, a plurality of second signal lines, a plurality of pixel electrodes, a plurality of first light-shielding structures, and a plurality of second light-shielding structures; where the orthographic projections of the plurality of first light-shielding structures on the first base substrate and the orthographic projections of the plurality of second signal lines on the first base substrate have areas that do not overlap with each other; a plurality of second light-shielding structures arranged between the layers where the plurality of first signal lines and the plurality of second signal lines are located and the first base substrate; an orthographic projection of one first signal line on the first base substrate is on a side of an orthographic projection of a symmetry axis extending along the first direction of one second light-shielding structure.