Light-Transmitting Display Substrate With Segmented Signal Wiring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display substrates face challenges in achieving a full-screen design due to the occupation of display regions by components like cameras and light sensors, which obstruct light transmission and affect the resolution and synchronization of sub-pixels in display regions.
Innovation Solution
A display substrate with a first side for display and a second side opposite to the first side, featuring a display region with a first light-transmitting display region and a second display region surrounding it, where the first connection wire includes a first portion with a light-transmitting wiring layer and a second portion with a metal wiring layer, allowing for efficient light transmission and reduced resistance for signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light-transmitting wiring layer is used in the first display region, then light transmission is improved, but signal transmission resistance increases
Solution Approach 1:
The connection wire is segmented into two portions: a first portion in the light-transmitting display region using a light-transmitting wiring layer, and a second portion in the non-light-transmitting display region using a metal wiring layer. This segmentation allows each portion to be optimized for its specific function - light transmission or low-resistance conduction.
Solution Approach 2:
Different materials are used in different regions of the connection wire based on local requirements. The first portion uses a light-transmitting wiring layer (such as ITO, IZO, or TCO) where light transmission is critical, while the second portion uses a metal wiring layer (such as Al, Mo, or Ti) where low resistance is critical. This local differentiation resolves the contradiction between light transmission and signal transmission quality.
2Adaptability or versatility
If display regions are occupied by cameras and light sensors, then component functionality is improved, but light transmission to the sensor is blocked
Solution Approach 1:
The pixel circuits are extracted from the first display region and placed in the second display region, allowing the first display region to be dedicated to light transmission for the sensor while the pixel circuits operate from the surrounding non-light-transmitting region. This spatial extraction resolves the conflict between component placement and light transmission.
Solution Approach 2:
The display substrate is divided into different functional regions (first light-transmitting display region and second non-light-transmitting display region) in the planar dimension, allowing simultaneous optimization for both light transmission and component functionality in different zones.
3Illumination intensity
If the entire display region uses light-transmitting wiring, then light transmission is maximized, but manufacturing complexity increases
Solution Approach 1:
Instead of making the entire wiring structure light-transmitting, only the portion that passes through the light-transmitting display region (the first portion) uses a light-transmitting wiring layer. The second portion in the non-light-transmitting region uses conventional metal wiring. This partial application minimizes manufacturing complexity while achieving the light transmission goal.
Data Source
AI summary
A display substrate and a manufacturing method thereof are provided. The display substrate has a first side and a second side opposite to the first side, and the display substrate includes a display region, the display region includes a first display region and a second display region at least partially surrounding the first display region, the first display region allows light from the first side to be at least partially transmitted to the second side; and the display substrate further includes at least one first connection wire in both of the first display region and the second display region, the first connection wire includes a first portion in the first display region and a second portion in the second display region, the first portion and the second portion are electrically connected, the first portion includes a first light-transmitting wiring layer, and the second portion includes a metal wiring layer.