Display Panel Transparent Wiring for Larger Under-Screen Camera Regions
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Solution Overview
Problem
Existing full-screen display panels face challenges in accommodating a large-size camera region due to limitations in pixel size and wiring region width, which restricts the number of light-emitting units that can be controlled by the driving circuitry.
Innovation Solution
The display panel is designed with a first region for the under-screen camera, where only light-emitting units are reserved, and a second region with a driving circuitry layer. A transparent conductive layer with multiple conductive sub-layers is used to electrically couple the light-emitting units to the driving circuitry, allowing for more transparent conductive lines and thus enabling control of more light-emitting units within the camera region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single transparent conductive layer is used to connect light-emitting units to driving circuitry, then the structure is simple, but the number of controllable light-emitting units is limited due to wiring region width constraints
Solution Approach 1:
The transparent conductive layer is divided into multiple conductive sub-layers (first conductive sub-layer, second conductive sub-layer, etc.) that are laminated one on another. Each sub-layer contains transparent conductive lines that can be independently routed, allowing the wiring to serve multiple light-emitting units simultaneously. This segmentation enables the same physical wiring region to control a greater number of light-emitting units by distributing control signals across multiple sub-layers.
Solution Approach 2:
The patent transitions from a single-plane conductive structure to a multi-layer stacked structure in the vertical dimension. By adding the vertical dimension through laminated conductive sub-layers, the system increases its capacity to control light-emitting units without expanding the horizontal wiring region width, effectively solving the constraint imposed by limited wiring space.
2Object-affected harmful factors
If the camera region is enlarged to improve under-screen camera performance, then photographing effects improve, but the area available for wiring and pixel control decreases
Solution Approach 1:
By segmenting the conductive layer into multiple sub-layers, the patent enables more efficient use of the wiring region. Each sub-layer can carry independent signal lines that serve different light-emitting units, allowing the wiring region to maintain its area while controlling more pixels through the stacked conductive structure.
Solution Approach 2:
The multi-layer conductive structure utilizes the vertical dimension to increase wiring capacity without consuming additional horizontal area. This allows the camera region to be enlarged while the multi-layer conductive lines in the vertical stack provide sufficient control pathways for the remaining light-emitting units.
3Measurement precision
If pixel size is reduced to increase the number of light-emitting units, then screen resolution improves, but the wiring region width becomes insufficient to control all pixels
Solution Approach 1:
The conductive layer is segmented into multiple sub-layers, each capable of independently routing signals to different sets of light-emitting units. This allows the wiring region to control a higher density of pixels by distributing control signals across multiple sub-layers rather than requiring all signals to traverse the same horizontal space in a single layer.
Solution Approach 2:
By introducing vertical stacking of conductive sub-layers, the patent adds a new dimension for signal routing. This enables the wiring system to handle more pixel control signals without increasing the horizontal wiring region width, thus supporting higher screen resolution within the same physical footprint.
Data Source
AI summary
A display panel, a manufacturing method thereof and a display device. The display panel includes a first region and a second region. The second region includes a driving circuitry layer and a first light-emitting unit located on a base substrate, the first region includes a plurality of second light-emitting units located on the base substrate, the second light-emitting unit is electrically coupled to the driving circuitry layer through a transparent conductive layer, the transparent conductive layer includes at least two conductive sub-layers laminated one on another and insulated from each other, each conductive sub-layer includes at least one transparent conductive line, and each transparent conductive line is coupled to a corresponding second light-emitting unit.