Display Panel White Sub-pixel Aperture Ratio Adjustment
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Solution Overview
Problem
Conventional RGBW display panels face challenges in maintaining picture quality due to the high brightness of white sub-pixels, which can affect the purity and color temperature of monochrome images, as the aperture ratio of white sub-pixels is often consistent with RGB sub-pixels, leading to excessive brightness.
Innovation Solution
The display panel design incorporates data lines with different widths for various sub-pixels, specifically reducing the aperture ratio of white sub-pixels relative to RGB sub-pixels by adjusting the overlap areas, thereby improving picture quality by controlling the effective light transmission areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If white sub-pixels are added in RGBW display panel to increase display brightness and reduce power consumption, then brightness is improved, but picture quality deteriorates
Solution Approach 1:
The patent applies local quality by making different parts of the display panel have different aperture ratios. Specifically, white sub-pixels are designed with smaller aperture ratios than RGB sub-pixels, allowing each type of sub-pixel to have optimized light transmission characteristics suitable for its function while maintaining overall picture quality
Solution Approach 2:
The patent changes the aperture ratio parameter for white sub-pixels compared to RGB sub-pixels. By adjusting this physical parameter, the display achieves both high brightness (through white sub-pixels) and good picture quality (through controlled light transmission), resolving the contradiction between brightness and picture quality
2Illumination intensity
If aperture ratio of white sub-pixels is made consistent with RGB sub-pixels, then light transmittance is improved, but image purity deteriorates
Solution Approach 1:
The patent implements local quality by creating spatial variation in aperture ratios across different sub-pixel types. White sub-pixels have smaller aperture ratios located at their centers, while RGB sub-pixels maintain larger aperture ratios, ensuring each sub-pixel type contributes optimally to either brightness or image purity
Solution Approach 2:
The patent segments the aperture ratio parameter by sub-pixel type, dividing the display into different functional zones. RGB sub-pixels are segmented to have larger apertures for color purity, while white sub-pixels are segmented to have smaller apertures for brightness control, preventing color contamination in monochrome displays
Data Source
AI summary
The embodiments of the present disclosure provide a display panel and a display apparatus. The display panel includes: a first substrate; a plurality of sub-pixels arranged in an array on the substrate, the plurality of sub-pixels comprising a first type of sub-pixels and a second type of sub-pixels; and at least one data line, each of which is disposed between adjacent columns of sub-pixels of the array and extending along a second direction, an overlapped area of projection of each data line on the first substrate and projection of the first type of sub-pixels on the first substrate has a first width, and an overlapped area of the projection of each data line on the first substrate and projection of the second type of sub-pixels on the first substrate has a second width less than the first width.