Display Device Data Line Crosstalk Reduction via Time-Sharing Switching
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Solution Overview
Problem
Existing display devices face challenges in reducing crosstalk between data lines, which affects the clarity and efficiency of image display.
Innovation Solution
A display device structure is implemented with a switch unit that selectively couples output lines to pixels in a time-sharing manner using control signals, allowing for efficient data voltage distribution across multiple pixels, thereby minimizing crosstalk between data lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data lines are directly connected to multiple pixels simultaneously, then data transmission speed is improved, but crosstalk between data lines increases
Solution Approach 1:
The patent implements dynamic switching of data line connections using switch units. Each switch unit selectively couples different output lines to different pixels based on control signals, changing the connection topology dynamically over time. This allows multiple pixels to share data lines at different time intervals, achieving both fast data transmission and reduced crosstalk through time-division multiplexing
Solution Approach 2:
The switch units operate periodically, alternating the coupling of output lines to different pixels in sequential time intervals. During one period, first output lines are coupled to first pixels; during the next period, the same output lines are coupled to second pixels. This periodic switching enables efficient data voltage distribution while minimizing interference between adjacent data lines
2Object-generated harmful factors
If the number of data lines is increased to reduce crosstalk, then crosstalk is reduced, but device complexity increases
Solution Approach 1:
Each output line serves multiple functions by being dynamically coupled to different pixels at different time intervals. The same physical data line can drive multiple pixel groups sequentially, eliminating the need for separate dedicated data lines for each pixel group. This multi-functional approach reduces the total number of data lines required while maintaining low crosstalk levels
Solution Approach 2:
Switch units are introduced as intermediary components between output lines and pixels. These switch units manage the coupling relationships, allowing a single output line to serve multiple pixels without direct permanent connections. The intermediaries enable efficient routing of data voltages while physically isolating adjacent data lines to prevent crosstalk
3Object-generated harmful factors
If time-sharing coupling is implemented, then crosstalk is reduced, but data transmission time increases
Solution Approach 1:
The switch units operate continuously without idle periods, constantly coupling output lines to different pixel groups in sequential intervals. The time-division multiplexing ensures that data transmission to different pixels occurs back-to-back without gaps, maintaining continuous useful action. This approach minimizes the total transmission time while effectively reducing crosstalk through temporal separation of simultaneous transmissions
Data Source
AI summary
A display device including first to eighth pixels successively arranged in a first direction on a first horizontal line, and first to sixteenth data lines each extending in a second direction and successively arranged in the first direction, in which the second and third data lines are disposed between the first and second pixels and respectively connected to the first and second pixels, the sixth and seventh data lines are disposed between the third and fourth pixels and respectively connected to the third and fourth pixels, the tenth and eleventh data lines are disposed between the fifth and sixth pixels and respectively connected to the fifth and sixth pixels, the fourteenth and fifteenth data lines are disposed between the seventh and eighth pixels and respectively connected to the seventh and eighth pixels.