Touch Display Compensation Pattern Prevents Short Circuit
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Solution Overview
Problem
The challenge lies in arranging touch electrodes and touch lines on display panels without causing short circuits due to the limited structure of the panel, which complicates the process and affects the functionality of touch display devices.
Innovation Solution
A touch display device structure featuring dams with protruding shapes and compensation patterns at their lower boundaries, where touch lines intersect, to prevent short circuits by managing residual films and ensuring proper alignment during the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If touch lines are arranged along the shape of the dam, then the touch lines can be properly positioned on the display panel, but adjacent touch lines may be short circuited due to residual films at the lower boundary of the dam
Solution Approach 1:
The compensation pattern is formed in advance at the lower boundary portion of the dam before the touch lines are formed. This preliminary action removes the harmful residual films that would cause short circuits between adjacent touch lines, while allowing the touch lines to be arranged along the dam shape for proper positioning.
2Adaptability or versatility
If touch electrodes and touch lines are arranged on the display panel, then touch functionality can be achieved, but the limited structure of the panel makes it difficult to avoid short circuits between adjacent touch lines
Solution Approach 1:
The compensation pattern is applied locally only at the lower boundary portion of the dam where short circuits occur, rather than modifying the entire display panel structure. This allows flexible arrangement of touch electrodes and touch lines while preventing short circuits at the critical location.
Data Source
AI summary
A touch display device includes a touch display panel on which a plurality of touch electrodes is arranged, at least one dam arranged in one direction in an outer edge area of the touch display panel and protruding from a bottom surface on which the dam is arranged, a plurality of touch lines arranged along a shape of the at least one dam in a direction intersecting the at least one dam, and a compensation pattern located in a lower boundary portion of the at least one dam between two adjacent touch lines among the plurality of touch lines.