LCD Panel Sub-Pixel Alignment for Privacy Clarity
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Solution Overview
Problem
Conventional LCD panels with privacy protecting designs suffer from unclear images at normal viewing angles due to dark or bright zones formed by disabled sub-pixels at the junctions of divided areas, compromising display quality.
Innovation Solution
The LCD panel is divided into areas with first and second sub-pixels having opposite alignment vectors, with adjusted driving voltages applied to scatter disabled sub-pixels in the narrow viewing angle mode, preventing significant dark or bright zones and improving display clarity at normal viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the LCD panel divides areas with opposite alignment vectors to achieve privacy protection, then privacy protection is improved, but dark or bright zones appear at junctions causing unclear images
Solution Approach 1:
The patent applies different driving voltages to different sub-pixels based on their location. Specifically, sub-pixels adjacent to junction lines receive different voltages than non-adjacent sub-pixels, creating local quality differences that eliminate dark/bright zones at junctions while maintaining privacy protection in other areas
Solution Approach 2:
The patent changes the driving voltage parameter for sub-pixels located at junctions of first and second areas. By adjusting the voltage applied to these specific sub-pixels, the optical properties are modified to prevent the formation of dark or bright zones, thereby improving display clarity without compromising the overall privacy protection function
2Manufacturing precision
If driving voltages are adjusted to scatter disabled sub-pixels, then display clarity at normal viewing angle is improved, but the complexity of voltage control increases
Solution Approach 1:
The patent segments the pixel array into different groups based on their location relative to junction lines. Sub-pixels are divided into those adjacent to junctions and those not adjacent, with different voltage control strategies applied to each segment. This segmentation simplifies the overall control logic while achieving the desired display clarity improvement
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 configuration ensures that disabled sub-pixels are not concentrated, reducing the area occupied by dark zones and enhancing display quality when viewed normally, while maintaining the privacy protecting function.
Implementation Method 1
Each of the first sub-pixels 102 provides a first main alignment vector A1, and each of the second sub-pixels 104 provides a second main alignment vector A2
Data Source
AI summary
A liquid crystal display (LCD) panel divided into a first area and a second area is provided. The first and second areas both include first sub-pixels and second sub-pixels. Each first sub-pixel provides a first main alignment vector; each second sub-pixel provides a second main alignment vector having a direction opposite to that of the first main alignment vector. The LCD panel has first sub-pixel units and second sub-pixel units arranged in arrays. Each first sub-pixel unit includes one first sub-pixel and one second sub-pixel sequentially arranged from top to bottom in a column direction. Each second sub-pixel unit includes one first sub-pixel and one second sub-pixel sequentially arranged from bottom to top in the column direction. In any one of the first area and the second area, multiple first sub-pixel units and multiple second sub-pixel units are arranged together in a same row.