Display Panel Sub-Electrode Design for Viewing Angle and Color Shift
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display panels using chiral liquid crystals suffer from color shift and narrow viewing angles due to large optical path differences, which affect transmittance and overall display performance.
Innovation Solution
The display panel incorporates a design with first and second sub-electrodes in each pixel unit, where the light wavelength transmittance differs between them, and specific included angles between the electrodes are optimized to reduce optical path differences, thereby enhancing viewing angles and preventing color shifts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If chiral liquid crystal molecules are used to improve transmittance, then transmittance is improved, but color shift in viewing angles occurs and viewing angles become narrow
Solution Approach 1:
The pixel electrode is divided into multiple sub-electrodes (first sub-electrode, second sub-electrode, third sub-electrode) with different light wavelength transmittance characteristics. Each sub-electrode has distinct transmittance in different wavelength ranges, and their combined effect broadens the overall viewing angle while maintaining high transmittance, resolving the contradiction between transmittance improvement and viewing angle limitation
Solution Approach 2:
Different sub-electrodes are designed with different local optical properties - the first sub-electrode has high transmittance in a first wavelength range, the second sub-electrode has high transmittance in a second wavelength range, and the third sub-electrode has high transmittance in a third wavelength range. This local differentiation of optical characteristics allows the display to achieve wide viewing angles across multiple spectral regions while maintaining high overall transmittance
Data Source
AI summary
The present disclosure discloses a display panel and a display device. The display panel includes a plurality of first electrodes positioned in a same pixel unit. The first electrodes include a first sub-electrode and a second sub-electrode. A light wavelength transmittance of a first sub-electrode is different from a light wavelength transmittance of a second sub-electrode, so as to increase a viewing angle of the display panel and solve a problem that the display panel is prone to having color shifts.