Refractive Strip Deflects Light to Reduce LCD Leakage
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Solution Overview
Problem
Liquid crystal displays (LCDs) face issues with leakage light and touch mura due to external forces causing the panel to bend, leading to light leakage through shifted black matrices, and conventional solutions to prevent this reduce the aperture ratio and display quality.
Innovation Solution
Incorporating a refractive strip on the same layer as the pixel electrode, positioned between the light-blocking strip and the signal line, which deflects light passing through the gap towards the signal line, reducing light leakage without affecting the aperture ratio or brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the black matrix area is increased to prevent light leakage when the panel is bent, then light leakage is reduced, but the aperture ratio is reduced and display quality deteriorates
Solution Approach 1:
The invention divides the light-blocking function into two separate components: the black matrix on the color filter substrate and a newly introduced light-blocking strip on the array substrate. This segmentation allows each component to have a smaller area while collectively achieving the same light-blocking effect, thereby preventing light leakage without reducing the aperture ratio.
Solution Approach 2:
The invention addresses the light leakage problem by adding a light-blocking element in a different spatial dimension. Instead of increasing the area of the black matrix on the color filter substrate, a light-blocking strip is introduced on the array substrate at a different position, creating a multi-dimensional light-blocking strategy that maintains aperture ratio while preventing touch mura.
2Object-affected harmful factors
If the black matrix is positioned to block light passing through the gap between the light-blocking strip and the signal line, then light leakage is reduced, but the structure becomes more complex
Solution Approach 1:
The invention merges the light-blocking function with the existing black matrix structure on the color filter substrate. By designing the black matrix to extend into the region above the gap between the light-blocking strip and the signal line, the light-blocking function is integrated into the existing structure rather than adding a completely separate component, thereby reducing overall structural complexity.
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
The refractive strip effectively reduces light leakage and touch mura effects when the panel is bent, improving display quality without compromising the aperture ratio or transmissivity.
Implementation Method 1
the refractive strip deflects light transmitting therethrough from the base substrate side into the liquid crystal layer towards the signal line
Data Source
AI summary
A liquid crystal display comprising a liquid crystal panel that is formed by attaching a color filter substrate to an array substrate with a liquid crystal layer therebetween. The array substrate comprising a base substrate and a pixel electrode, a signal line, and a light-blocking strip, provided on the base substrate. The light-blocking strip is disposed below and at a side of the signal line and is separated from the signal line by the base substrate, a refractive strip is disposed at the side of the signal line over a gap between the light-blocking strip and the signal line, and the refractive strip is disposed on the same layer as the pixel electrode. The refractive strip deflects light transmitting therethrough from the base substrate side into the liquid crystal layer towards the signal line.