Liquid Crystal Display Common Line Resistance Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In liquid crystal display devices, the resistance of common lines poses a challenge that affects the display's performance, particularly in maintaining stable common voltage and preventing aperture reduction and distortion.
Innovation Solution
The implementation of a liquid crystal display device design featuring alternately arranged data and common lines, with auxiliary electrode units and joining units formed from specific materials, where auxiliary lines and joining units are connected to the common line to reduce resistance and maintain stable voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the common line is used as an electrode for the storage capacitor, then the storage capacitor can be formed, but the resistance of the common line increases
Solution Approach 1:
The common line is segmented into multiple sections by introducing auxiliary lines that connect to the common line at different locations. This segmentation allows the common line to have lower resistance by providing multiple parallel conduction paths, while still maintaining its function as an electrode for the storage capacitor.
Solution Approach 2:
Auxiliary lines are introduced as intermediary elements between the common line and the pixel electrodes. These auxiliary lines have lower resistance and serve as additional conduction paths, reducing the overall resistance of the common line structure while maintaining the storage capacitor functionality.
2Device complexity
If the common line resistance is high, then the structure can be simpler, but the common voltage becomes distorted
Solution Approach 1:
The auxiliary lines are strategically positioned at specific locations along the common line where voltage distortion is most likely to occur. By adding conduction paths at these critical locations, the common voltage stability is improved without requiring a complete redesign of the entire common line structure.
3Stability of the object's composition
If the common line resistance is reduced by adding auxiliary lines, then the common voltage stability improves, but the device complexity increases
Solution Approach 1:
The auxiliary lines serve multiple functions: they reduce common line resistance, provide additional conduction paths for the storage capacitor, and help stabilize the common voltage. This multi-functionality justifies the added structural complexity by achieving multiple performance improvements simultaneously.
Data Source
AI summary
The present invention relates a liquid crystal display device which can minimize resistance of a common line. The liquid crystal display device includes a plurality of data lines and a plurality of common lines arranged alternately, a plurality of gate lines arranged to cross the data lines and the common lines, a pixel electrode formed at every pixel region defined as a region is surrounded by the data line, the common line and the gate line, and at least one auxiliary electrode unit overlapped with a portion of each of the pixel electrodes adjacent to the common line, wherein the auxiliary electrode unit is connected to the common electrode line electrically.