Display Driver Segmentation for Flexible Perimeter Layout
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Solution Overview
Problem
Conventional display apparatuses face challenges in minimizing dead areas and preventing cracks when bent, particularly due to the arrangement of drivers and signal lines in the peripheral area, which affects the display's flexibility and image quality.
Innovation Solution
The display apparatus incorporates a substrate with a display area and a peripheral area, featuring a round corner and notch design, with sub-pixel circuits, light-emitting diodes, and drivers arranged in a specific configuration to reduce dead space and enhance flexibility, including multiple driver groups and signal connection lines that overlap with the common voltage supply line to prevent external electrostatic discharge and improve signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drivers are arranged in the peripheral area to control signal lines, then signal transmission is enabled, but dead area increases and flexibility decreases
Solution Approach 1:
The peripheral area is divided into multiple driver groups (first driver group, second driver group, third driver group) with separate control regions. Each driver group independently controls specific signal lines, allowing optimized placement that reduces dead area while maintaining signal transmission capability through structured segmentation of control functions.
Solution Approach 2:
The patent transitions from a conventional linear or grid-based driver arrangement to a multi-dimensional distributed configuration where driver groups are positioned at different locations around the display area perimeter. This spatial redistribution in multiple dimensions enables better utilization of peripheral space, reducing dead area while preserving signal transmission reliability.
2Reliability
If drivers are arranged in the peripheral area, then signal lines can be controlled, but the display becomes prone to cracks when bent
Solution Approach 1:
By segmenting the driver arrangement into multiple distributed groups rather than a single concentrated block, the patent reduces stress concentration at any one location. This segmentation allows the display to bend more flexibly while maintaining control over signal lines, as each driver group is positioned to minimize mechanical stress during bending.
Solution Approach 2:
Different regions of the peripheral area are assigned different driver groups with specific control functions optimized for their local positions. This local optimization allows each driver group to be positioned in a location that balances signal transmission requirements with flexibility needs, preventing crack formation in critical bending areas.
3Reliability
If signal connection lines are added to transfer signals across separation region, then driver connectivity is improved, but device complexity increases
Solution Approach 1:
The separation region acts as an intermediary zone between different driver groups, with signal connection lines serving as mediators to transfer signals across this region. These connection lines are strategically positioned to enable communication between driver groups while minimizing the overall complexity by utilizing the existing peripheral area structure rather than adding completely separate routing paths.
Data Source
AI summary
A display apparatus includes drivers included in first, second, and third driver groups in a peripheral area and disposed along a round corner of a display area. The first driver group includes a first driver electrically connected to a signal line on an i-th row, and a second driver adjacent to the first driver in a first arrangement direction and electrically connected to a signal line disposed on a (i+j)-th row (i<j). The second driver group includes a third driver electrically connected to a signal line disposed on an (i+n)-th row (j<n), and a fourth driver electrically connected to a signal line disposed on a (i+m)-th row (n<m) and adjacent to the third driver in a direction opposite to a first arrangement direction. A separation region is between the third driver group and the second driver group.