Curved LCD Panel Black Matrix Compensation for Substrate Misalignment
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Solution Overview
Problem
Curved liquid crystal display devices experience color shift and light leakage due to misalignment between the color filter substrate and array substrate during the curving process, affecting display quality.
Innovation Solution
The curved liquid crystal display panel is designed with a black matrix widened according to calculated displacement, aligning pixel electrodes with color filter photoresists by curving in the direction of the long side of pixel electrodes, and using a formula K2=E*P*r/(8*d) to determine the displacement based on substrate thickness, elastic modulus, and curvature radius.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display device is curved with a large curvature radius, then the visual experience effect is improved, but the color filter substrate misaligns with the array substrate causing color shift phenomenon
Solution Approach 1:
The black matrix is preliminarily widened before the curving process to compensate for the expected displacement. By pre-adjusting the black matrix width based on calculated displacement values, the invention ensures that after curving, the color filter photoresists and pixel electrodes remain aligned, preventing color shift while maintaining large curvature for good visual experience
Solution Approach 2:
The invention changes the parameter of the black matrix width to compensate for curvature-induced displacement. By calculating displacement based on curvature radius and adjusting the black matrix width accordingly, the system maintains alignment precision across different curvature conditions, resolving the contradiction between large curvature and precise alignment
2Shape
If the display device is further curved, then the curvature effect is enhanced, but the displacement between color filter substrate and array substrate increases causing light leakage phenomenon
Solution Approach 1:
The black matrix is preliminarily widened to cover the expected displacement range for various curvature levels. This pre-compensation ensures that even when the device is further curved, the color filter photoresists remain within the black matrix coverage area, preventing light leakage while maintaining enhanced curvature effects
Solution Approach 2:
The widened black matrix acts as a cushioning buffer that absorbs the displacement caused by curving. By providing extra coverage area beforehand, the invention ensures that misalignment does not cause light leakage even when curvature is increased, maintaining display quality while achieving desired shape
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
This solution effectively eliminates color shift and light leakage phenomena, improving display quality by ensuring proper alignment of the color filter and array substrates during curvature.
Implementation Method 1
a liquid crystal layer disposed between the color filter substrate and the array substrate
Data Source
AI summary
A curved liquid crystal display panel is disclosed. The curved liquid crystal display panel includes a color filter substrate and an array substrate disposed corresponding to the color filter substrate. The array substrate has pixel electrodes disposed thereon. Each of the pixel electrodes has a first side and a second side. A length of the first side is greater than a length of the second side, and a curved direction of the curved liquid crystal display panel is the same as an extending direction of the first side. In the present invention, the curved direction of the curved liquid crystal display panel is arranged to be the same as a long side of each of the pixel electrodes.