Liquid Crystal Display Panel Anti-Peep Control via Segmented Electrodes
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Solution Overview
Problem
Existing anti-peep liquid crystal displays have limited anti-peep effects at oblique viewing angles and are less effective compared to frontal viewing angles, affecting user experience.
Innovation Solution
A liquid crystal display panel with a color filter substrate and array substrate assembly, where each pixel region is divided into two areas with a liquid crystal deflection control device comprising a common electrode, first electrode, and second electrode, allowing for independent control of liquid crystal deflection angles to achieve consistent gray scales at both vertical and oblique viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a fixed viewing angle is used for anti-peep display, then anti-peep effect is achieved at the fixed viewing angle, but display quality deteriorates at oblique viewing angles
Solution Approach 1:
The pixel region is divided into a first area and a second area, with each area having independent liquid crystal deflection control. The first area controls liquid crystals for vertical viewing angle display, while the second area controls liquid crystals for oblique viewing angle display, allowing different regions to optimize for different viewing angles simultaneously
Solution Approach 2:
Different regions of the pixel are given different functional characteristics. The first area is optimized for vertical viewing with specific liquid crystal deflection control, while the second area is optimized for oblique viewing with different deflection control, making each part specialized for its intended viewing angle
2Ease of manufacture
If liquid crystal deflection is controlled uniformly across the pixel region, then manufacturing is simplified, but display effect deteriorates at oblique viewing angles
Solution Approach 1:
The liquid crystal control electrodes are segmented into first and second electrodes corresponding to the first and second areas. This segmentation allows independent voltage control for each area, enabling different liquid crystal deflection angles to be applied to different regions, thereby improving oblique viewing display effect while maintaining manageable manufacturing complexity
3Device complexity
If a single liquid crystal layer is used, then device structure is simplified, but anti-peep effect is limited to fixed viewing angles
Solution Approach 1:
Within a single liquid crystal layer, different local regions (first area and second area) are given different deflection control capabilities through separate electrode control. This allows the same liquid crystal layer to exhibit different optical properties in different regions, achieving multi-angle adaptability without adding multiple liquid crystal layers
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 ensures consistent display quality and anti-peep effects across different viewing angles by finely adjusting liquid crystal deflection angles, resulting in improved brightness and chromaticity for both vertical and oblique views.
Implementation Method 1
a light extracting member is disposed on a side of the portion of the array substrate in each pixel region adjacent to the liquid crystals and is covered by an orthographic projection of the first area of the pixel region on the array substrate, and the light extracting member is configured to emit vertical light
Implementation Method 2
Each of the pixel regions further includes a liquid crystal deflection control device configured to control the liquid crystals in the first area and the second area of the pixel region to be deflected at different angles, respectively
Implementation Method 3
Deflection angles of the liquid crystals in the first area and the second area are changed by changing voltages applied to the first electrode and the second electrode
Data Source
AI summary
The present disclosure provides a liquid crystal display panel and a liquid crystal deflection control method. The liquid crystal display panel includes a color filter substrate and an array substrate which are assembled to form a cell, and liquid crystals located therebetween. The liquid crystal display panel further includes a plurality of pixel regions. Each pixel region includes a first area and a second area, the color filter substrate in each pixel region includes a black matrix covered by an orthographic projection of the second area on the color filter substrate, a light extracting member is disposed on a side of the array substrate in each pixel region adjacent to the liquid crystals and covered by an orthographic projection of the first area on the array substrate, and the light extracting member is configured to emit vertical light. Each pixel region further includes a liquid crystal deflection control device.