Under-Display Panel Wiring With Stacked Transparent Conductive Layers
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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 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
1Quantity of substance
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 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 stacked and insulated from each other. Each sub-layer contains transparent conductive lines that can be independently routed, allowing the system to control a larger number of light-emitting units by utilizing vertical stacking to increase wiring capacity without increasing horizontal space occupation.
Solution Approach 2:
The patent transitions from a two-dimensional planar wiring structure to a three-dimensional stacked structure by adding the vertical dimension. Multiple conductive sub-layers are arranged in the thickness direction of the display panel, enabling more signal paths to be packed into the same footprint area, thus increasing the number of controllable light-emitting units.
2Illumination intensity
If the camera region is enlarged to achieve better photographing effect, then the light transmittance is improved, but the area available for driving circuitry and light-emitting units is reduced
Solution Approach 1:
The display panel is divided into distinct regions: a first region dedicated to the under-screen camera with high light transmittance requirements, and a second region for driving circuitry and light-emitting units. This spatial segmentation allows the camera region to be optimized for light transmission while the driving circuitry is concentrated in a separate area, resolving the conflict between camera performance and circuitry space.
Solution Approach 2:
Different regions of the display panel are assigned different functional qualities: the first region (camera area) is optimized for optical transparency with minimal obstructions, while the second region is optimized for electrical functionality with dense circuitry and light-emitting units. This local optimization allows each region to perform its specific function effectively.
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.