Liquid Crystal Voltage Control for Disclination Elimination
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Solution Overview
Problem
Existing liquid crystal display (LCD) technologies fail to ensure a sufficient voltage difference between control and pixel electrodes, leading to disclination, which results in reduced light transmission, longer response time, and image persistence due to improperly controlled liquid crystal molecule rotation.
Innovation Solution
The method adjusts the gray level of pixels and adjacent pixels to ensure a minimum voltage difference greater than the required threshold, with the voltage difference between control and pixel electrodes determined by the gray level of at least one adjacent pixel, and the potential of the control electrode set higher or lower than the pixel electrode based on polarity, while maintaining a varying voltage difference to prevent disclination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the voltage difference between control and pixel electrodes is determined by adjacent pixels' gray levels, then the device complexity is reduced, but the manufacturing precision deteriorates because the voltage difference may be insufficient to prevent disclination
Solution Approach 1:
The patent applies preliminary action by adjusting the gray level of adjacent pixels before displaying the actual image content. This preprocessing ensures that when the pixel electrode voltage is set based on adjacent pixel gray levels, the voltage difference will be sufficient to prevent disclination. The system performs this gray level adjustment in advance, allowing simple voltage control while maintaining precise liquid crystal alignment.
Solution Approach 2:
The patent changes the gray level parameter of adjacent pixels to ensure adequate voltage difference. By modifying the gray level values (which directly affect electrode voltages), the system maintains the necessary voltage differential to prevent disclination while keeping the control mechanism simple. This parameter adjustment resolves the contradiction between simple control and precise alignment.
2Ease of operation
If the voltage difference is determined by adjacent pixels to simplify control, then the ease of operation improves, but the reliability deteriorates due to insufficient voltage difference causing disclination
Solution Approach 1:
The system performs preliminary adjustment of adjacent pixel gray levels before image display to ensure adequate voltage difference. This preliminary action maintains reliability by preventing disclination while keeping the operation method simple and easy to implement.
Solution Approach 2:
The patent implements a feedback mechanism where the gray level of adjacent pixels is continuously adjusted based on the required voltage difference to prevent disclination. This feedback ensures that the voltage difference remains sufficient under varying display conditions, maintaining reliability while preserving ease of operation.
3Adaptability or versatility
If the voltage difference is set based on adjacent pixel gray levels, then the adaptability improves for different display scenarios, but the manufacturing precision worsens when large gray level differences occur
Solution Approach 1:
The patent dynamically changes the gray level parameter of adjacent pixels to maintain adequate voltage difference across various display scenarios. This parameter adjustment ensures adaptability to different images and conditions while preventing disclination even when large gray level differences occur, thus maintaining manufacturing precision.
Solution Approach 2:
By performing preliminary gray level adjustment of adjacent pixels before displaying content with potentially large gray level differences, the system ensures adequate voltage difference is maintained. This preliminary action provides adaptability to various display scenarios while preserving liquid crystal alignment precision.
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 approach effectively eliminates disclination, ensuring proper liquid crystal molecule rotation, improved light transmission, and reduced image persistence by ensuring the voltage difference meets the necessary criteria for all gray levels, resulting in sharper and more stable images.
Implementation Method 1
the rotation of the liquid crystal molecules 121 are controlled by an electric field generated by the control electrode 133, the pixel electrode 134, and the common electrode 112
Data Source
AI summary
A voltage difference is set between a control electrode and a pixel electrode of a pixel dependent on the gray level of at least one adjacent pixel. A minimum voltage difference, increasing with the gray level of the pixel, is required between the control and the pixel electrodes to prevent disclination. A method of eliminating disclination adjusts the gray level of the pixel and the adjacent pixel to ensure that the voltage difference is greater than the minimum voltage difference, setting the voltage difference into the control and the pixel electrodes, and resetting the potential of the pixel electrode to display the gray level of the pixel without varying the voltage difference between the pixel and the control electrodes. The potential of the control electrode is set to be higher than the potential of the pixel electrode when the polarity of the pixel is positive. The potential of the control electrode is set to be lower than the potential of the pixel electrode when the polarity of the pixel is negative.