Display Substrate Touch-Line Spacing for Narrow-Bezel Interference Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing OLED display technologies face issues with parasitic capacitance between touch drive lines and sensing lines, leading to mutual interference and affecting touch performance, particularly in narrow-bezel designs.
Innovation Solution
The display substrate incorporates a design where the distance between touch drive lines and touch sensing lines is increased, with optional shield lines to reduce parasitic capacitance and interference, while maintaining a narrow bezel width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distance between touch drive lines and touch sensing lines is increased to reduce parasitic capacitance, then touch performance is improved, but the bezel width increases
Solution Approach 1:
A shield line is introduced as an intermediary element between the touch drive lines and touch sensing lines. The shield line is connected to ground potential and acts as an electromagnetic shield to reduce parasitic capacitance and interference between the drive and sensing lines, thereby improving touch performance without requiring increased spacing that would widen the bezel
2Reliability
If shield lines are added between touch drive lines and sensing lines to reduce interference, then parasitic capacitance is reduced by up to 72%, but the device structure becomes more complex
Solution Approach 1:
The shield line is designed with uniform width and spacing characteristics throughout the bezel region, matching the homogeneous pattern of the touch drive and sensing lines. This homogeneous design allows the shield line to be integrated into the existing fabrication process without requiring additional complex manufacturing steps, reducing the impact on device complexity
Data Source
AI summary
Provided are a display substrate and a display apparatus. The display apparatus includes a base substrate including a display region and a bezel region on at least one side of the display region; and a plurality of touch lines in the bezel region, including a plurality of touch drive lines and a plurality of touch sensing lines, where a first distance is provided between any two adjacent touch drive lines in the plurality of touch drive lines, a second distance is provided between any two adjacent touch sensing lines in the plurality of touch sensing lines, a third distance is provided between the plurality of touch drive lines and the plurality of touch sensing lines, the first distance is substantially equal to the second distance, and the third distance is greater than each of the first distance and the second distance.