Touch Display Screen Driving Method for Reduced Signal Interference
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Solution Overview
Problem
Conventional touch display screens suffer from poor touch performance and reduced display quality due to the staggered nature of touch control and display stages, which affects the duration and quality of the display stage and interferes with touch functionality.
Innovation Solution
A touch display screen and driving method that includes a substrate with multiple scanning lines and a touch electrode layer, where the touch control stage is staggered from the scanning stage of pixel rows connected to first and second scanning lines, with the first scanning lines overlapping the edge regions and the second scanning lines overlapping the center regions of the touch electrode rows, reducing interference from changing electrical signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the touch control stage and display stage are staggered in conventional touch display screens, then the touch control function can be implemented, but the display quality deteriorates and touch performance becomes poor due to shorter display duration and interference from changing electrical signals
Solution Approach 1:
The patent segments the scanning lines into two groups: first scanning lines overlapping edge regions of touch electrode rows and second scanning lines overlapping center regions. Different timing strategies are applied to each group, allowing the touch control stage to overlap with scanning stages of pixel rows connected to second scanning lines while being staggered from those connected to first scanning lines. This segmentation enables simultaneous optimization of touch performance and display quality by reducing interference from changing electrical signals in a controlled manner.
2Duration of action of moving object
If the touch control stage overlaps with scanning stages of pixel rows connected to first scanning lines, then more display time can be allocated, but interference from changing electrical signals on first scanning lines degrades touch performance
Solution Approach 1:
The patent applies different timing characteristics to different regions of the display. Pixel rows connected to first scanning lines (overlapping edge regions) use one timing strategy, while pixel rows connected to second scanning lines (overlapping center regions) use another. This local differentiation allows the system to tolerate overlap in regions with better touch performance (center regions) while maintaining display duration, without significantly degrading touch performance in edge regions where interference is more critical.
Data Source
AI summary
Provided are a touch display screen and a driving method of the touch display screen. The driving method of the touch display screen includes: one frame cycle includes at least one touch control stage, the at least one touch control stage is staggered from a scanning stage of a pixel row electrically connected to at least one first scanning line and overlaps a scanning stage of a pixel row electrically connected to at least one second scanning line. The first scanning lines overlap edge regions of the touch electrode rows in the second direction, and the second scanning lines overlap center regions of the touch electrode rows in the second direction.