RGBW Array Substrate Data Line Segmentation for Color Mixing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The transition from RGB three-color to RGBW four-color display panels for reducing energy consumption and improving light transmittance leads to issues with test wiring, causing color mixing and making it difficult to detect solid colors, which affects MURA (Manufacturing Yield Risk Analysis) decisions and results in defective products.
Innovation Solution
An array substrate design with intersecting scanning and data lines, where data lines are grouped into pairs and arranged to allow for independent control of red, green, and blue sub-pixels, enabling the display of solid colors like yellow, cyan, magenta, and white without color mixing by using specific voltage signals on data line pairs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If data lines are shared between multiple sub-pixels in RGBW display panel testing, then device complexity and control cost are reduced, but color mixing occurs and measurement precision deteriorates
Solution Approach 1:
The data lines are segmented into separate groups for different color sub-pixels. Specifically, red sub-pixels are connected to first data lines, green sub-pixels to second data lines, blue sub-pixels to third data lines, and white sub-pixels to fourth data lines. This segmentation prevents color mixing during testing while maintaining simplified control through the shared line architecture.
2Ease of manufacture
If the same data lines are used for both RGB and RGBW display panel testing, then manufacturing cost and device complexity are reduced, but test reliability deteriorates due to color mixing
Solution Approach 1:
The data line structure implements local quality differentiation where different sets of data lines are assigned to different color sub-pixel types. The first data lines are optimized for red sub-pixels, second for green, third for blue, and fourth for white sub-pixels. This localized assignment ensures that when testing RGBW panels, each color can be independently controlled and detected without interference, maintaining test reliability while allowing mask sharing between RGB and RGBW products.
Data Source
AI summary
An array substrate comprising: a plurality of scanning lines (G) arranged in a first direction; a plurality of data lines (S) arranged in a second direction, wherein said scanning lines (G) and said data lines (S) intersect and insulate, a plurality of defined array areas intersected by said scanning lines (G) and by said data lines (S) are a plurality of sub-pixels, wherein the sub-pixel corresponding to the data line is a sub-pixel column, and the sub-pixel corresponding to the scanning line is a sub-pixel row; and a plurality of data lines (S) are divided into a plurality of data line groups 10 arranged in the second direction, wherein each data line group 10 comprises six data line pairs, and data lines in one data line pair connect each other; there are at least four data line pairs corresponding to the same color sub-pixel column in one said data line group, and said sub-pixels comprise at least three colors.