Parallel Scan Line Layout for Uniform LCD Panel Driving
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Solution Overview
Problem
Existing liquid crystal display panels experience uneven display due to differences in resistance between horizontal and vertical scan lines, leading to variations in pixel signals and affected display effects.
Innovation Solution
The implementation of a display panel design where multiple second scan lines are connected in parallel, with adjustable resistance between the signal output terminal and the via hole, reducing resistance differences between output terminals and first scan lines, thereby minimizing signal variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scan lines are connected through COF with different connection positions, then the display panel can be driven, but resistance differences cause uneven display
Solution Approach 1:
Multiple second scan lines are connected in parallel between the COF output terminal and the first scan lines. This merging of multiple parallel paths reduces the overall resistance and equalizes the resistance differences that would otherwise exist due to different connection positions, thereby improving display uniformity
Solution Approach 2:
The resistance of second scan lines is adjusted by changing their structural parameters (such as line width, length, or material composition) to compensate for the resistance differences caused by different connection positions. This parameter optimization ensures that all first scan lines receive signals with consistent resistance characteristics
2Reliability
If second scan lines are connected in parallel, then resistance differences are reduced, but device complexity increases
Solution Approach 1:
The second scan lines serve multiple functions: they act as signal transmission paths from the COF to the first scan lines, and simultaneously function as resistance compensation elements. By making the second scan lines perform both functions, the patent reduces signal consistency issues without requiring additional separate compensation structures, thus limiting the increase in device complexity
Data Source
AI summary
The present invention provides a display panel and a display device using the display panel. By connecting a plurality of second scan lines in parallel, resistance between output terminals of chips on film (COF) and first scan lines are reduced, and differences between output resistances of the COF corresponding to different first scan lines are reduced, so differences between signals in different first scan lines are reduced, and uneven display problems in existing display panels are solved.