Sub-pixel Height Variation for Aperture Ratio and Power
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Solution Overview
Problem
Liquid crystal display (LCD) devices face challenges in reducing power consumption while maintaining image quality, as increasing pixel density beyond a threshold leads to reduced recognition of individual pixels, necessitating a method to decrease sub-pixel numbers without compromising image quality.
Innovation Solution
The implementation of sub-pixel groups with varying heights and arrangements, where each group corresponds to multiple pixels, allowing for reduced sub-pixel counts while enhancing aperture ratio and brightness, and optimizing the driving module to accommodate these arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the number of sub-pixels is decreased, then the aperture ratio and brightness are improved, but the image quality may deteriorate
Solution Approach 1:
The patent applies local quality by differentiating sub-pixel heights within the same pixel group. Specifically, first sub-pixels have a first height while second sub-pixels have a second height that is half the first height. This local differentiation allows certain sub-pixels to contribute more to aperture ratio and brightness while others maintain structural balance, thereby improving brightness without sacrificing image quality.
2Use of energy by stationary object
If the number of sub-pixels is decreased, then the power consumption is reduced, but the image quality may deteriorate
Solution Approach 1:
The patent reduces power consumption by decreasing the number of active sub-pixels while maintaining image quality through strategic height differentiation. By having first sub-pixels with greater height than second sub-pixels, the patent achieves better aperture ratio and brightness with fewer sub-pixels, thereby reducing power consumption without compromising the visual quality that would otherwise require more sub-pixels.
3Area of stationary object
If the number of sub-pixels is decreased, then the layout area is reduced, but the aperture ratio may be compromised
Solution Approach 1:
The patent optimizes the layout area while maintaining aperture ratio through local height differentiation. First sub-pixels are designed with a first height and second sub-pixels with a second height (half of first height), allowing the same physical space to accommodate more sub-pixels effectively. This local quality variation enables better utilization of available space, increasing aperture ratio without proportionally increasing layout area.
Data Source
AI summary
A display device includes a plurality of sub-pixel groups. Each sub-pixel group includes a first sub-pixel located at a first column; a second sub-pixel located at a second column adjacent to the first column; a third sub-pixel located a third column adjacent to the second column; a fourth sub-pixel located at the third column; a fifth sub-pixel located at a fourth column adjacent to the third column; and a six sub-pixel located at the fourth column; wherein height of the first sub-pixel is different from or/equal to height of the second sub-pixel, a sum of heights of the third sub-pixel and the fourth sub-pixel, and a sum of heights of the fifth sub-pixel and the sixth sub-pixel; wherein height of the third sub-pixel is different from or equal to height of the fourth sub-pixel; wherein height of the fifth sub-pixel is different from or equal to height of sixth sub-pixel.