Multi-Driver Scan Line Layout for Narrow-Bezel VR Displays
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Solution Overview
Problem
Existing display devices and systems face challenges in reducing the area of the peripheral region while maintaining high image resolution and preventing image deterioration when viewed through a single pair of lenses.
Innovation Solution
A display device with a substrate featuring a display region of a polygon with five or more sides, incorporating multiple scan line drive circuits and a signal line coupling circuit in the peripheral region, along with a driver integrated circuit to control these components, allowing for efficient pixel arrangement and reduced peripheral area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of scan lines is increased to improve image resolution, then the area of the peripheral region increases
Solution Approach 1:
The scan line drive circuit is divided into multiple independent circuits (first, second, and third scan line drive circuits) positioned at different locations in the peripheral region. This segmentation allows the scan lines to be controlled from multiple points, reducing the overall area required in the peripheral region while maintaining high image resolution through increased scan line density.
2Area of stationary object
If multiple scan line drive circuits are added to reduce peripheral region area, then device complexity increases
Solution Approach 1:
Multiple scan line drive circuits are positioned adjacent to each other in the peripheral region, and their functions are merged to collectively control the scan lines. The first, second, and third scan line drive circuits work together to drive the same set of scan lines, reducing the overall peripheral area while distributing the control function across multiple circuits that are closely integrated.
3Measurement precision
If scan lines are inclined with respect to the first direction, then the second scan line drive circuit is more displaced in the second direction
Solution Approach 1:
The scan lines are arranged to extend in a direction inclined at an angle to the first direction (horizontal direction), utilizing the second direction (vertical direction) to reduce the displacement distance of the second scan line drive circuit from the display region. This angular arrangement allows the circuit to be positioned closer to the display region by utilizing both horizontal and vertical dimensions, thereby reducing the overall peripheral area required.
Data Source
AI summary
According to an aspect, a display device includes: a display region provided with pixels, scan lines extending in a first direction, and signal lines extending in a second direction; a peripheral region located between ends of the substrate and the display region; a first scan line drive circuit disposed in the peripheral region; a second scan line drive circuit disposed in the peripheral region opposite the first scan line drive circuit; a third scan line drive circuit disposed in the peripheral region opposite the first scan line drive circuit; a signal line coupling circuit disposed in the peripheral region; and a driver IC disposed in the peripheral region. The second and third scan line drive circuits are adjacent to each other. More than one of the scan lines coupled to the second scan line drive circuit passes through the third scan line drive circuit and extends to the display region.