Display Substrate Common Voltage Input Line Groups for Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal display technology faces challenges in maintaining consistent color representation across different viewing angles due to variations in common voltage distribution across sub-pixels, leading to issues like color shift and reduced display quality.
Innovation Solution
The display substrate design includes a configuration of gate lines, data lines, and common electrode lines intersecting to form sub-pixels, with common voltage input line groups electrically connected to common electrode lines, ensuring uniform voltage distribution across sub-pixels within a pixel unit and allowing different voltages for sub-pixels in different rows, thereby preventing color shift and enabling wide-viewing-angle display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a common electrode line is disposed in the array substrate to provide common voltage, then the liquid crystal display can operate, but color shift and display uniformity deteriorate due to variations in common voltage distribution across sub-pixels
Solution Approach 1:
The patent divides the array substrate into multiple independent regions, each with its own common electrode line and common voltage input line. This segmentation allows different common voltages to be applied to different regions, enabling independent optimization of voltage distribution in each region to maintain display uniformity and prevent color shift.
Solution Approach 2:
The patent implements local quality by allowing different common voltages to be applied to different regions of the array substrate. Each region can have customized voltage characteristics tailored to its specific requirements, improving overall display uniformity while accounting for local variations in the substrate.
2Manufacturing precision
If common voltage input line groups are configured to intersect with common electrode lines, then voltage distribution can be controlled, but device complexity increases
Solution Approach 1:
The patent merges the functions of common voltage input lines and common electrode lines by making them electrically connected at intersection points. This combining approach simplifies the overall structure by using the same line configurations to serve dual purposes: as input lines for voltage application and as electrode lines for liquid crystal control.
Solution Approach 2:
The common electrode lines serve multiple functions: they act as voltage distribution paths from the input lines and simultaneously function as the common electrode for liquid crystal switching. This multi-functionality reduces the total number of separate components needed while maintaining precise voltage distribution control.
Data Source
AI summary
The application provides a display substrate and a display device. The display substrate includes: gate lines, data lines, the gate lines and the data lines being arranged to intersect to define sub-pixels, every multiple sub-pixels in a same row constituting a pixel unit; and common electrode lines, each of the common electrode lines is between adjacent two of the gate lines. The display substrate further includes common voltage input line groups intersecting with the common electrode lines. Common voltage input lines in different groups are electrically connected to different ones of the common electrode lines, respectively; and an orthographic projection of every N columns of pixel units on a substrate covers an orthographic projection of a corresponding one of the common voltage input line groups on the substrate, where N is an integer greater than or equal to 1.