Display Panel Data-Link Routing for Narrow Bezels and Image Quality
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Solution Overview
Problem
Existing display devices face challenges in achieving a narrow bezel design while maintaining high aperture ratios and preventing image quality degradation, particularly in ultra-high resolution displays.
Innovation Solution
The display device and panel employ a modified structure where data lines in different areas are connected to data link line groups with linear and bending structures, optimizing coupling capacitance to reduce image quality degradation and enable a narrow bezel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If data lines are connected using conventional linear structure, then manufacturing is simple, but bezel width is large
Solution Approach 1:
The data link line group is divided into multiple individual data link lines, each connecting to specific data lines in different areas. This segmentation allows optimized routing for narrow bezel while maintaining manageable complexity through modular organization.
Solution Approach 2:
Data link lines are routed in multiple dimensions and directions to achieve narrow bezel width. The bending structure of data link lines utilizes spatial arrangement to reduce horizontal occupancy while maintaining electrical connectivity.
2Length of moving object
If data link lines have bending structure to reduce bezel, then image quality degradation occurs due to coupling capacitance
Solution Approach 1:
Different data link lines have different routing structures (bending or linear) depending on their specific location and function. The bending structure is applied selectively to achieve narrow bezel in critical areas while maintaining linear structures where image quality is more sensitive to capacitance variations.
Solution Approach 2:
The physical parameters of data link lines (routing path, length, position) are optimized to control coupling capacitance. By adjusting the bending radius, position, and length of data link lines, the coupling capacitance is controlled within acceptable ranges to prevent image quality degradation.
3Productivity
If aperture ratio is increased, then display efficiency improves, but pixel defect probability increases
Solution Approach 1:
The display device includes a repair structure that proactively addresses potential pixel defects. When a pixel defect is detected, the repair structure is activated to correct the defect, preventing it from affecting display quality. This preliminary protective action allows higher aperture ratios without proportionally increasing defect impact.
Data Source
AI summary
A display panel includes a plurality of subpixels, a plurality of data lines, and a plurality of gate lines. A data driving circuit supplies a data voltage to the data lines. A gate driving circuit supplies a gate signal to the gate lines. A timing controller controls the data driving circuit and the gate driving circuit. A display area of the display panel includes a first area corresponding to the data driving circuit and a second area located outside of the first area. A first data link line group having a linear structure is connected to a first data line group disposed in the first area. A second data link line group having a bending structure is connected to a second data line group disposed in the second areas.