Display Device Driver Routing for Compact Non-Display Area
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices have a significant non-display area that limits the expansion of the display area, and they often suffer from display defects such as visible spots due to the layout of drivers and connection lines.
Innovation Solution
A display device design that includes a substrate with a display area and a non-display area, featuring pixel circuit groups arranged in a matrix, a first driver for providing data voltage, a second driver for providing driving signals, and connection lines that are strategically positioned to minimize overlap with pixel circuits and reduce dead space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If drivers and connection lines are placed in the non-display area, then the display area can be expanded, but the non-display area still occupies significant space and causes display defects
Solution Approach 1:
The connection lines extend from the non-display area into the display area along the first direction, utilizing the vertical dimension to route signals. This allows the second driver to be positioned in the non-display area while maintaining electrical connection to pixel circuits in the display area, effectively reducing the horizontal space required for driver placement.
Solution Approach 2:
The first connection line acts as an intermediary component that bridges the second driver in the non-display area with the pixel circuits in the display area. This mediator enables signal transmission across the boundary between display and non-display areas, allowing driver functions to be separated from the main display region.
2Ease of operation
If connection lines are routed through the display area, then drivers can be positioned in the non-display area, but visible spots and display defects occur due to line-pixel overlap
Solution Approach 1:
The patent applies different spatial strategies for different types of connection lines. The first connection line extends in the first direction (vertical) where it can overlap pixels without causing visible defects, while the second connection line extends in the second direction (horizontal) through separation spaces where it avoids pixel overlap entirely. This local differentiation of routing strategies eliminates display defects while maintaining driver placement flexibility.
Solution Approach 2:
The connection path is segmented into two distinct components: the first connection line that extends vertically from the second driver to the pixel circuits, and the second connection line that extends horizontally through separation spaces. This segmentation allows each component to be optimized for its specific function, with the vertical portion handling signal transmission and the horizontal portion navigating around pixels to avoid visible defects.
3Area of stationary object
If the non-display area is reduced, then the display area can be expanded, but the layout of drivers and connection lines becomes more constrained
Solution Approach 1:
By utilizing the vertical dimension (first direction) for the primary connection path from the second driver to pixel circuits, the patent reduces the horizontal space requirements in the non-display area. This dimensional shift allows for a more compact overall layout while maintaining functional connectivity.
Data Source
AI summary
A display device includes pixel circuit groups disposed in a matrix form along a first direction and a second direction intersecting the first direction in the display area, each pixel circuit group including pixel circuits, a first driver disposed in the non-display area, positioned on one side of the display area, and providing a data voltage to the pixel circuits, a second driver disposed in the non-display area, positioned on the other side opposite to the one side of the display area, and providing a driving signal to the pixel circuits, a first connection line connected to the second driver and extending in the first direction, a second connection line connected to the first connection line in a separation space between adjacent pixel circuit groups and extending in the second direction, and a signal line connected to the second connection line and transmitting the driving signal to the pixel circuits.