Initialization Voltage Source Layout for Display Corner Dead Space
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Solution Overview
Problem
Display devices face increased dead space at corners due to the planar area occupied by signal lines from scan drivers, emission drivers, and initialization voltage sources, which affects the overall size and efficiency of the display.
Innovation Solution
The implementation of initialization voltage sources disposed along the rounded corners of the boundary between the pixel and peripheral areas, overlapping with data lines in a fan-out structure, reduces dead space by sharing a common planar area with the drivers and signal lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If initialization voltage sources are disposed in the peripheral area away from the boundary, then the layout is simpler, but dead space increases at the corners
Solution Approach 1:
The initialization voltage sources are extended along the rounded corner of the boundary between the pixel area and peripheral area, utilizing the curved boundary geometry to reduce dead space. This dimensional adaptation allows the voltage sources to follow the contour of the display device corner rather than occupying a separate planar area.
Solution Approach 2:
The initialization voltage sources are positioned to overlap with data lines in the fan-out structure along the thickness direction, merging the functional areas of voltage supply and data signal transmission into a shared spatial region, thereby reducing overall dead space.
2Reliability
If signal lines are arranged in a fan-out structure in the peripheral area, then data signal transmission is improved, but dead space increases at corners
Solution Approach 1:
The initialization voltage sources are extended along the rounded corner boundary, utilizing the curved geometry to reduce dead space while maintaining the fan-out structure for data signal transmission.
Solution Approach 2:
The initialization voltage sources are positioned within the same planar region as the data lines in the fan-out structure, nesting the voltage supply function within the existing signal line arrangement to minimize additional space occupation.
Data Source
AI summary
A display device includes a substrate including a pixel area including a pixel; a peripheral area adjacent to the pixel area; and a boundary between the pixel area and the peripheral area, the boundary comprising a rounded corner; a data driver in the peripheral area; a data line through which a data signal is provided from the data driver to the pixel; and an initialization voltage source in the peripheral area and connected to the pixel, the initialization voltage source extended along the rounded corner of the boundary between the pixel area and the peripheral area. Along the rounded corner of the boundary, the initialization voltage source overlaps the data line along a thickness direction.