Display Circuit with Reset-Line Overlap for Stable Data Signals
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Solution Overview
Problem
The arrangement of data supply lines in the non-display area of display devices leads to easy distortion of data signals in transmission bypass lines due to coupling with variable voltage levels of adjacent lines, limiting the reduction of the non-display area width.
Innovation Solution
Incorporation of transmission bypass lines that overlap with a reset control line, maintaining a constant voltage level during image frame periods to stabilize data signals, thereby reducing signal distortion without additional constant voltage lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data supply lines are arranged in the non-display area to connect data lines to the display driving circuit, then electrical connection is achieved, but the width of the non-display area increases and data signals are easily distorted due to coupling with adjacent lines
Solution Approach 1:
The patent introduces transmission bypass lines that extend in the first direction (perpendicular to data lines) to create an alternative signal transmission path. This dimensional change allows data signals to bypass the problematic parallel arrangement and reach data lines through a different spatial route, reducing coupling distortion while maintaining compact non-display area width
Solution Approach 2:
The transmission bypass lines act as intermediary elements between the data supply lines and data lines. By introducing this intermediate transmission path, the patent enables data signals to be transferred without direct coupling to adjacent variable voltage lines, thus maintaining signal stability while achieving compact layout
2Area of stationary object
If transmission bypass lines are arranged parallel to data lines to reduce non-display area width, then space is saved, but data signals are easily distorted by coupling with variable voltage levels of adjacent lines
Solution Approach 1:
The patent extends transmission bypass lines in the first direction (intersecting/perpendicular to data lines) rather than keeping them purely parallel. This dimensional change creates a crossing geometry where the bypass line intersects data lines at specific points, allowing signal transfer while minimizing parallel coupling distance and reducing susceptibility to voltage interference
Solution Approach 2:
The transmission bypass lines are pre-configured with specific geometric arrangements (extending in first direction, intersecting data lines) before signal transmission occurs. This preliminary structural arrangement ensures that when data signals are transmitted, they follow a predetermined path that inherently minimizes coupling distortion with adjacent lines
Data Source
AI summary
There is provided a display device comprises a substrate; a circuit layer; and an element layer. The element layer comprises light emitting elements disposed in emission areas of a display area of the substrate, and light sensing elements disposed in light sensing areas of the display area. The circuit layer comprises light emitting pixel drivers electrically connected to the light emitting elements; light sensing pixel drivers electrically connected to the light sensing elements; data lines electrically connected to the light emitting pixel drivers; first dummy lines extending in a first direction; second dummy lines extending in parallel with the data lines; and a reset control line electrically connected to the light sensing pixel drivers, extending in the first direction, transmitting a reset control signal for resetting the light sensing pixel drivers, and overlapping at least some of the first dummy lines.