RGBW Display Array Substrate Transistor Configuration
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Solution Overview
Problem
RGBW liquid crystal display panels suffer from low brightness and distorted image display due to the configuration of a white sub-pixel, which affects optical performance.
Innovation Solution
The array substrate is designed with sub-pixel transistors configured within the white sub-pixel to enhance the aperture rate of colorful sub-pixels, allowing the white sub-pixel to be turned on only when all colorful sub-pixels are active, thereby increasing image brightness and reducing distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a white sub-pixel is added in RGBW pixel design to increase display brightness and reduce power consumption, then power consumption is reduced and overall brightness is increased, but the pure-color brightness is reduced and the displayed image becomes distorted
Solution Approach 1:
The patent applies local quality by making the white sub-pixel's transistor configuration different from traditional RGB sub-pixels. Specifically, the white sub-pixel uses a single transistor that controls all three color sub-pixels (R, G, B) within the same pixel cell, rather than each sub-pixel having its own dedicated transistor. This localized structural modification allows the white sub-pixel to function efficiently while maintaining the optical performance of colorful sub-pixels.
Solution Approach 2:
The white sub-pixel's transistor serves multiple functions simultaneously - it controls the white sub-pixel itself and also controls the three colorful sub-pixels (R, G, B) within the same pixel cell. This multi-functional design reduces the total number of transistors needed while maintaining full control over all sub-pixels, thereby reducing power consumption without sacrificing colorful image quality.
2Illumination intensity
If a white sub-pixel is added in RGBW pixel design to increase display brightness, then overall display brightness is increased, but the pure-color brightness is reduced and optical performance deteriorates
Solution Approach 1:
The patent modifies only the transistor configuration of the white sub-pixel while leaving the electrode and optical structure of all sub-pixels (including R, G, B) unchanged. This localized modification ensures that the optical paths and light emission characteristics of colorful sub-pixels remain optimal, preserving image quality while adding the brightness benefits of the white sub-pixel.
Solution Approach 2:
The patent segments the control function by separating the white sub-pixel control from the colorful sub-pixel control. The white sub-pixel uses a dedicated single transistor for control, while the colorful sub-pixels maintain their traditional control structures. This segmentation allows independent optimization of each sub-pixel type's electrical and optical characteristics.
3Use of energy by stationary object
If traditional RGBW pixel design is used with white sub-pixel, then power consumption is reduced, but the aperture rate of colorful sub-pixels is insufficient leading to distorted images
Solution Approach 1:
The patent merges the control function of the white sub-pixel with the control of all three colorful sub-pixels within the same pixel cell. By using a single transistor in the white sub-pixel to control R, G, and B sub-pixels simultaneously, the design consolidates control circuitry and maximizes the aperture area available for light emission in all sub-pixels, thereby improving both power efficiency and aperture rate.
Data Source
AI summary
The present disclosure relates to a display panel and an array substrate including a plurality of pixel cells including colorful sub-pixels and one white sub-pixel. Each of the sub-pixels includes at least one sub-pixel electrode and at least one sub-pixel transistor corresponding to each of the sub-pixel electrode. The sub-pixel transistors are configured within the white sub-pixel to enhance an aperture rate of the colorful sub-pixels. As the sub-pixel transistors are configured within the same white sub-pixel, the brightness of the white sub-pixel may be decreased. At the same time, the aperture rate of the colorful sub-pixels may be greatly enhanced so as to enhance the performance of colorful images.