Display Substrate Touch-Line Layout to Prevent Transistor Shorts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display substrates using in-cell technology face limited layout space, leading to potential short circuits between touch lines and input transistors due to overlapping electrical components.
Innovation Solution
The display substrate design includes a base substrate with sub-pixels, data lines, and touch lines arranged in specific directions to avoid overlap, using input transistors with inclined and straight portions, and shielding portions to prevent short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If in-cell technology is used to integrate display and touch control, then integration is achieved, but layout space is limited and short circuits may occur between touch lines and input transistors
Solution Approach 1:
The patent introduces a fifth layer structure (touch line layer) above the base substrate layer, allowing touch lines to be routed in a different spatial dimension. This dimensional separation enables the touch lines to extend in the fourth direction while input transistors remain on the base substrate, preventing overlap and short circuits while maintaining integration.
Solution Approach 2:
The patent divides the electrical components into separate functional layers: input transistors are segmented and placed on the base substrate layer, while touch lines are segmented and routed through the fifth layer. This segmentation allows independent optimization of each component's layout, preventing interference between touch lines and input transistors.
2Device complexity
If touch lines and data lines are arranged in the same plane, then layout simplicity is maintained, but overlap with input transistors occurs causing short circuits
Solution Approach 1:
The patent resolves the conflict between layout simplicity and electrical isolation by moving touch lines to a fifth layer above the base substrate. This dimensional change allows touch lines to maintain simple routing patterns in the fourth direction without conflicting with input transistors on the base substrate layer, achieving both simplicity and isolation.
Solution Approach 2:
The fifth layer acts as an intermediary space that separates touch lines from the base substrate components. This intermediate layer allows touch lines to pass through the display area without directly interacting with input transistors, preventing short circuits while maintaining routing simplicity.
Data Source
AI summary
A display substrate is provided, including: sub-pixels arranged in a fourth direction, including at least one first sub-pixel extending in a second direction and at least one second sub-pixel extending in a third direction; a data line; and a first touch line extending in the fourth direction. The data line is electrically connected to the sub-pixels through input transistors, at least one input transistor includes a first electrode electrically connected to a respective sub-pixel. An orthographic projection of the first touch line on the base substrate does not overlap with that of the first electrode on the base substrate. In a yth partition, the orthographic projection of the first touch line on the base substrate is between orthographic projections of the first electrode of the second input transistor and the data line connected to the second input transistor on the base substrate.