Pixel Electrode Dual-Domain Layout for Wide-Angle Display Contrast
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Solution Overview
Problem
Existing display panels face challenges in maintaining contrast at vertical viewing angles and large squint viewing angles, particularly in scenarios like vehicular central control screens, where drivers need to view at these angles, leading to issues like low contrast and light leakage.
Innovation Solution
A display panel design featuring a horizontally placed vertical domain pixel structure with pixel electrodes comprising multiple first branch electrodes arranged in parallel, where the included angle between adjacent segments is less than 180°, forming a dual-domain structure that enhances liquid crystal control and improves contrast across various viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a dual-domain structure is implemented with angled electrode segments, then contrast at both vertical and large squint viewing angles is improved, but the device complexity increases
Solution Approach 1:
The patent merges the advantages of horizontal and vertical domain modes into a single pixel electrode structure. By configuring multiple first branch electrodes with angled segments less than 180°, the design integrates the high vertical viewing angle contrast of horizontal domain mode with the high large squint viewing angle contrast of vertical domain mode, achieving dual-domain functionality without requiring separate electrode structures for each mode.
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 solution effectively integrates the advantages of horizontal and vertical domain pixel designs, significantly improving contrast at both vertical and large squint viewing angles, as demonstrated by enhanced contrast ratio values compared to traditional designs.
Implementation Method 1
liquid crystal molecules have aeolotropism. If the liquid crystal molecules at multiple positions in the pixel unit have a same deflection direction, at the time of viewing in different angles, the display difference in different viewing angles is caused
Data Source
AI summary
Provided are a display panel and a display device. The display panel includes multiple data lines and multiple scanning lines. The multiple data lines intersect with the multiple scanning lines to define multiple pixel units arranged in an array, and the data lines are insulated from the scanning lines; and pixel electrodes of pixel units that are among the multiple pixel units and in at least portion of the array include multiple first branch electrodes arranged in parallel; along a direction of the multiple scanning lines, each of the multiple first branch electrodes includes multiple first branch electrode segments connected sequentially; and an included angle between two adjacently connected first branch electrode segments of the multiple first branch electrode segments is less than 180°.