Display Device Input Sensor Mesh Trace Lines Dead Space Reduction
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Solution Overview
Problem
Existing display devices have a significant dead space due to the area occupied by trace lines in the input sensor's peripheral area, which reduces the effective display area.
Innovation Solution
The display device incorporates a design where the trace lines of the input sensor are minimized in the peripheral area by using a mesh line structure that overlaps the active area, allowing for a reduced dead space without compromising the input sensor's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If trace lines are placed in the peripheral area of the input sensor, then the input sensor functionality is maintained, but the dead space increases and effective display area is reduced
Solution Approach 1:
The patent merges the trace lines with the detection electrodes by making the trace lines transparent and integrating them into the same layer structure as the detection electrodes. This combination allows the trace lines to be less visually prominent and reduces the perceived dead space while maintaining electrical connectivity for the input sensor functionality.
Solution Approach 2:
The patent applies different optical properties to different parts of the trace lines. The portions of trace lines overlapping the active area are made transparent to minimize visual impact and dead space appearance, while the portions in the non-display area can have different properties. This local differentiation of transparency allows the trace lines to fulfill their electrical function while minimizing their visual presence in the display area.
2Area of stationary object
If trace lines are made transparent to reduce dead space visibility, then the display area is enhanced, but the electrical connectivity of the input sensor must be maintained
Solution Approach 1:
The patent changes the optical parameter (transparency) of the trace lines without compromising their electrical parameters. By adjusting the transparency parameter of the trace line material or structure, the visual impact is reduced while the electrical conductivity and connectivity required for input sensor functionality are maintained through proper material selection and structural design.
Data Source
AI summary
A display device comprising a display panel and an input sensor comprising detection electrodes overlapping an active area, and first trace lines connected to the detection electrodes, having a portion overlapping the active area, and comprising mesh lines overlapping the active area, having a portion extending in a first direction, and comprising a first row mesh line having a portion extending in the first direction, and a second row mesh line having a portion extending in the first direction, and spaced apart from the first row mesh line in a second direction, and a second portion electrically connected to the mesh lines, overlapping the peripheral area, extending in the second direction, and comprising a first column wiring connected to the first row mesh line and extending in the second direction, and a second column wiring connected to the second row mesh line and extending in the second direction.