Symmetrical Subpixel Arrangement for Display Panel Sensing Time Reduction
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Solution Overview
Problem
High-resolution display devices face challenges in reducing the time required for sensing characteristic values of subpixels, leading to luminance non-uniformity and degraded image quality due to variations in threshold voltage and mobility of driving transistors.
Innovation Solution
A display panel and driving method that symmetrically arranges subpixels of the same color with respect to a reference voltage line, allowing simultaneous sensing and compensation of characteristic values, thereby reducing sensing time and enhancing aperture ratio by omitting color mixing areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real-time sensing is performed on all subpixels during display driving, then characteristic value sensing accuracy is improved, but sensing time increases significantly (1-20 minutes or longer)
Solution Approach 1:
The patent divides the sensing process into two stages: pre-sensing before display operation and real-time sensing during display driving. The pre-sensing stage performs initial characteristic value measurement on subpixels, while the real-time sensing stage only performs additional sensing on selected subpixels. This segmentation reduces the total sensing time from 1-20 minutes to a much shorter duration while maintaining adequate sensing accuracy through the combination of both stages.
Solution Approach 2:
The patent performs preliminary sensing of characteristic values for all subpixels before the display operation begins. By completing the initial sensing stage in advance, the system eliminates the need to sense all subpixels in real-time during display driving, thereby significantly reducing the sensing time while still maintaining accurate characteristic value information for compensation purposes.
2Ease of manufacture
If subpixels are arranged in traditional patterns, then manufacturing is straightforward, but aperture ratio is reduced due to color mixing areas
Solution Approach 1:
The patent employs asymmetric subpixel arrangements where subpixels of the same color are positioned symmetrically with respect to a reference voltage line rather than using traditional uniform patterns. This asymmetric design allows for the omission of color mixing areas between subpixels of the same color, thereby increasing the aperture ratio while maintaining ease of manufacture through systematic arrangement rules.
Solution Approach 2:
The patent extracts and removes color mixing areas from the subpixel arrangement by positioning subpixels of the same color adjacent to each other without intermediate color mixing regions. This extraction of unnecessary color mixing areas increases the effective aperture ratio while the systematic positioning rules ensure that manufacturing remains straightforward.
Data Source
AI summary
Embodiments of the disclosure relate to a display panel, a display device, and a display driving method. Specifically, there may be provided a display panel including a plurality of pixels arranged in a matrix form, each of the plurality of pixels including N subpixels arranged in a first direction and having different colors, wherein N is 3 or 4 and a plurality of sensing lines disposed in a second direction between the plurality of pixels and configured to sense characteristic values for a plurality of subpixels electrically connected thereto, wherein the N subpixels are disposed so that subpixels of a same color are symmetrical with respect to the sensing line.