Multi-domain Liquid Crystal Display Device Transmittance Viewing Angle
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Solution Overview
Problem
Current 4K UHD liquid crystal display panels face a challenge in achieving high transmittance while maintaining a wide viewing angle, as reducing the number of subdomains to improve transmittance often results in lower viewing angles.
Innovation Solution
The method involves determining specific GAMMA voltages for pixels in neighboring frames of an output image, where one frame has a GAMMA voltage greater than and another less than a reference voltage, allowing human eyes to integrate these frames for an effective eight-subdomain viewing angle effect on a four-subdomain display panel, thereby enhancing both transmittance and viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the number of subdomains is decreased to improve transmittance, then transmittance is improved, but viewing angle is reduced
Solution Approach 1:
The patent applies periodic action by alternately displaying two neighboring frames with different GAMMA voltage patterns (one frame with voltages greater than reference, another with voltages less than reference). This temporal periodicity creates the illusion of eight subdomains through human eye integration, effectively improving viewing angle while maintaining the simpler four-subdomain structure for high transmittance
Solution Approach 2:
The patent changes the GAMMA voltage parameter dynamically between two neighboring frames. By alternating between voltage patterns above and below the reference voltage, the system creates multiple liquid crystal director orientations temporally, achieving eight-subdomain viewing angle effects without the structural complexity of actual eight subdomains, thus maintaining high transmittance
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 enables high resolution display with high transmittance and a large viewing angle without the need to change the display panel, effectively addressing the limitations of prior art by mimicking the display effect of eight subdomains using only four.
Implementation Method 1
a corresponding GAMMA voltage of any pixel in a frame of output image of the two neighboring frames of output image is greater than a reference voltage corresponding to the pixel, and a corresponding GAMMA voltage of the pixel in another frame of output image is less than the reference voltage corresponding to the pixel
Implementation Method 2
Relying on integration effects of human eyes on time, eight different liquid crystal directors, that is, equal to display viewing angle effects of eight subdomains, are seen based on a four-subdomain display panel
Data Source
AI summary
The present disclosure provides an image display method and apparatus, and a multi-domain liquid crystal display device, relates to the field of display technologies. The image display method applied to a multi-domain liquid crystal display device includes: acquiring grayscales of pixels in a frame of an input image; determining GAMMA voltages corresponding to pixels in two neighboring frames of an output image according to the grayscales of the pixels in the frame of the input image, where for any pixel of the output image, a corresponding GAMMA voltage thereof in a first frame of the two neighboring frames is greater than a reference voltage corresponding to the pixel, and a corresponding GAMMA voltage thereof in a second frame of the two neighboring frames is less than the reference voltage; and displaying the two neighboring frames of the output image according to the GAMMA voltages of the pixels therein.