LCD Panel Vertical Pixel Voltage Control for Viewing Angle Color Deviation
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Solution Overview
Problem
Current liquid crystal display (LCD) technologies suffer from significant color deviation and compromised contrast when viewed at large angles, resulting in inferior viewing angle performance and display quality.
Innovation Solution
The implementation of a display panel with vertically aligned basic pixel units, each comprising a first and second pixel unit, where sub-pixel units receive different voltages on their liquid crystal capacitors under the same effective input signal, enhancing viewing angle performance and display quality by providing distinct voltages to sub-pixel units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If single gate drive or tri-gate drive mechanisms are used, then the LCD can be operated with simpler control, but color deviation occurs when viewed at large angles and contrast is compromised
Solution Approach 1:
The pixel unit is divided into first and second pixel units with different voltage control mechanisms. The first pixel unit uses single gate drive while the second pixel unit uses tri-gate drive, allowing each segment to optimize for its specific function while collectively solving the color deviation problem at large viewing angles
Solution Approach 2:
Different gate drive mechanisms are applied to different regions (first and second pixel units) based on their specific requirements. The first pixel unit employs simpler control while the second pixel unit employs more complex control, creating local optimization that improves overall color accuracy without uniformly increasing system complexity
2Adaptability or versatility
If viewing angle is increased, then more of the display is visible, but color deviation and contrast loss worsen
Solution Approach 1:
The display panel dynamically adjusts voltage levels applied to liquid crystal capacitors based on viewing conditions. By providing different voltages to first and second pixel units, the system adapts the optical properties of liquid crystals to maintain color fidelity across different viewing angles
Solution Approach 2:
The invention changes the voltage parameter applied to liquid crystal capacitors in different pixel units. By controlling the voltage levels differently in first and second pixel units, the optical anisotropy of liquid crystals is optimized to reduce color deviation when viewed at large angles while maintaining broad viewing angle coverage
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 significantly improves viewing angle color deviation and display quality by allowing for varied voltage control across sub-pixel units, surpassing the limitations of single gate drive and tri-gate drive mechanisms.
Implementation Method 1
a selected sub-pixel unit of the first pixel unit has a first voltage on its liquid crystal capacitor
Implementation Method 2
Under a same effective input signal, a selected sub-pixel unit of the first pixel unit has a first voltage on its liquid crystal capacitor
Data Source
AI summary
A display panel and a liquid crystal display (LCD) are disclosed. The display panel includes multiple basic pixel units arranged in an array. Each basic pixel unit includes a first pixel unit and a second pixel unit aligned vertically. When the first and second pixel units are under a same effective input signal, the selected sub-pixel unit of the first pixel unit has a greater voltage on its liquid crystal capacitor than that of the selected sub-pixel unit of the second pixel unit. The present invention provides different voltages on the sub-pixel units' liquid crystal capacitors, thereby improving LCD's viewing angle, color deviation, and display quality.