Display Substrate Bonding Region Data Connection Lines
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Solution Overview
Problem
Current display technologies face challenges in achieving a narrow bezel design for OLED displays due to the need for fan-shaped oblique lines in the bonding region, which increases the bezel width and reduces the screen-to-body ratio, leading to poor appearance and display quality.
Innovation Solution
A display substrate design that includes a display region with data connection lines extending in different directions, eliminating the need for fan-shaped oblique lines in the bonding region, and using compensation traces and dummy electrodes to ensure uniform display effects under both transmitted and reflected light, thereby reducing the bezel width and improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fan-shaped oblique lines are used in the bonding region to connect data signal lines, then electrical connection is achieved, but bezel width increases and screen-to-body ratio decreases
Solution Approach 1:
The patent introduces data connection lines extending in the first direction (horizontal) and compensation traces extending in the second direction (vertical), creating a two-dimensional connection pattern that replaces the traditional fan-shaped oblique lines. This dimensional change allows for more efficient space utilization in the bonding region, reducing bezel width while maintaining electrical connections.
Solution Approach 2:
The connection path is segmented into multiple functional elements: data connection lines for horizontal connections, compensation traces for vertical connections and shadow compensation, and dummy electrodes for electrical balance. This segmentation allows each element to perform its specific function efficiently, optimizing the overall connection structure and reducing bezel requirements.
2Area of stationary object
If data connection lines extend in different directions through the display region, then bezel width is reduced, but display uniformity may be affected
Solution Approach 1:
The patent applies different functional characteristics to different regions: data connection lines extend horizontally in the first direction for signal transmission, while compensation traces extend vertically in the second direction for shadow compensation and electrical balance. Each region is optimized for its specific function, ensuring display uniformity is maintained despite the complex routing.
Solution Approach 2:
Compensation traces act as intermediary elements that connect different parts of the display region and compensate for shadowing effects caused by the data connection lines. These intermediary traces ensure uniform electrical characteristics and optical uniformity across the display, maintaining manufacturing precision while enabling the reduced bezel design.
3Manufacturing precision
If compensation traces and dummy electrodes are added, then display uniformity is improved, but device complexity increases
Solution Approach 1:
The compensation traces serve multiple functions: they provide electrical connections, compensate for shadowing effects from data connection lines, and balance the electrical characteristics of the display. The dummy electrodes provide both electrical balance and shadow compensation. This multi-functionality reduces the need for separate dedicated components, managing complexity while achieving display uniformity.
Data Source
AI summary
Disclosed is a display substrate including a display region (100) and a bonding region (200) located on a side of the display region (100). The display region (100) includes a base substrate (101) and a drive circuit layer disposed on the base substrate (101). The drive circuit layer includes a plurality of circuit units constituting a plurality of unit rows and a plurality of unit columns, a plurality of data signal lines (60), and a plurality of data connection lines (70). The data connection lines (70) include a first connection line (71) extending along a first direction and a second connection line (72) extending along a second direction. The first connection line (71) is electrically connected with the second connection line (72) and a data signal line (60) respectively. The first connection line (71) and the second connection line (72) are located in different conductive layers.