Display Substrate Spacer Orientation for Viewing Angle Color Cast
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-resolution display devices face challenges in manufacturing due to the need for precise pixel size reduction and increased spacing between pixels, leading to higher manufacturing costs and difficulty, and suffer from color shift issues at different viewing angles due to spacer placement.
Innovation Solution
A display substrate design featuring a specific arrangement of sub-pixels and spacers where the extension direction of spacers is angled relative to the row or column direction, reducing shielding and improving color consistency across viewing angles, and optimizing pixel group arrangements to minimize color mixing and enhance display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If spacers are placed perpendicular to row or column direction to support pixel structure, then structural stability is improved, but color shift occurs at different viewing angles due to spacer shielding
Solution Approach 1:
The patent applies asymmetry by placing spacers at non-perpendicular angles (specifically 45 degrees) relative to the row and column directions, rather than using the conventional perpendicular arrangement. This asymmetric placement reduces the shielding effect of spacers on sub-pixels when viewed from different angles, thereby minimizing color shift while maintaining structural support functionality.
Solution Approach 2:
The patent introduces a new dimensional orientation for spacer placement by extending spacers in a direction that is neither purely horizontal nor vertical, but at a 45-degree angle. This dimensional change allows the spacers to support the pixel structure effectively while reducing their shadowing effect on sub-pixels from various viewing angles, thus resolving the color shift issue.
2Manufacturing precision
If pixel size is reduced and spacing between pixels is decreased to improve resolution, then display resolution is improved, but manufacturing precision requirements increase leading to higher costs and difficulty
Solution Approach 1:
The patent employs self-service by using spacers that automatically define the spacing and positioning of sub-pixels during the manufacturing process. The spacers serve as self-aligning fixtures that eliminate the need for highly precise manual positioning, thereby reducing manufacturing precision requirements and associated costs while enabling high-resolution displays.
Solution Approach 2:
The patent changes the geometric parameters of the spacer placement (specifically the angle and position) to optimize both resolution and manufacturability. By adjusting the spacer orientation to 45 degrees and optimizing their dimensions, the patent achieves high pixel density while maintaining ease of manufacturing through standard fabrication processes.
3Strength
If spacers are placed to provide structural support, then mechanical support is improved, but spacers shield sub-pixels from light causing color shift
Solution Approach 1:
The patent applies curvature by using bent or curved spacers instead of straight linear spacers. The curved configuration allows the spacers to provide structural support while minimizing their projection area that blocks light from sub-pixels. The curved shape strategically positions the spacer material to support the structure without creating significant shadowing effects on the light-emitting sub-pixels.
Data Source
AI summary
A display substrate and a display device. The display substrate includes a first sub-pixel (111), a second sub-pixel (112), and a first spacer (0101). A line connecting the center (C1) of the first sub-pixel (111) and the center (C2) of the second sub-pixel (112) is a center line (CL1); the center line (CL1) is not perpendicular to a first direction (X); the first direction (X) is at least one of the row direction or the column direction. The first spacer (0101) is disposed between the first sub-pixel (111) and the second sub-pixel (112), and the extension direction (E01) of first spacer (0101) between the first sub-pixel (111) and the second sub-pixel (112) is not perpendicular to the first direction (X). Therefore, the display substrate can improve the different viewing angle color cast and improve the display quality.