Transparent Display Substrate Layout for Low-Resistance Pixel Connections
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Solution Overview
Problem
Conventional electronic devices with integrated photosensitive elements, such as front cameras and light sensors, face issues with high conductive resistivity in transparent display regions, leading to increased heat generation and ineffective electrical connections, which affect the proper operation and full-screen display capabilities.
Innovation Solution
A display substrate design with a first display region having a higher light transmittance than a second region, utilizing a conductive layer with lower resistivity to connect electrodes and wirings, reducing contact resistance and heat generation, and incorporating a specific pixel circuit arrangement to simplify manufacturing and improve image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent display region is provided for photosensitive elements, then light transmittance is improved, but conductive resistivity increases leading to heat generation and poor electrical connection
Solution Approach 1:
The patent applies local quality by using different materials with different properties in different regions. Specifically, a transparent conductive material (such as ITO) is used in the transparent display region where low conductive resistivity and high light transmittance are both required, while other regions may use conventional conductive materials. This allows the transparent region to maintain both good electrical connection and high light transmittance simultaneously.
Solution Approach 2:
The patent employs composite materials by combining transparent conductive materials with conventional conductive materials in the display structure. The transparent conductive material layer is specifically designed to provide both electrical conductivity and optical transparency, creating a composite structure that resolves the contradiction between light transmittance and electrical connection reliability.
2Reliability
If transparent conductive material is used to reduce contact resistance, then electrical connection is improved, but light transmittance may be reduced
Solution Approach 1:
The patent applies parameter changes by carefully controlling the thickness and optical properties of the transparent conductive material layer. By optimizing parameters such as layer thickness, material composition, and conductivity, the patent achieves a balance where the transparent conductive material provides sufficient electrical connection reliability while maintaining high light transmittance for the photosensitive elements to function properly.
3Area of stationary object
If full-screen display is implemented, then display area is improved, but photosensitive element operation is affected due to heat and electrical connection issues
Solution Approach 1:
The patent applies local quality by providing specialized transparent conductive material regions specifically at the locations of photosensitive elements (cameras, sensors) within the full-screen display. This allows the majority of the display area to maintain full display functionality while specific localized regions are optimized to support photosensitive elements with appropriate electrical connection and thermal properties.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables full-screen display while maintaining proper operation of photosensitive devices by reducing heat and improving electrical connections, ensuring high-definition images and effective light transmission.
Implementation Method 1
a conductive resistivity of the conductive layer is less than a conductive resistivity of the first electrode and a conductive resistivity of the wiring, respectively
Data Source
AI summary
A display substrate, a display panel, and a display device. The display substrate includes a substrate, and further includes a first display region, a plurality of first sub-pixels located on the substrate are arranged in the first display region, and each of the plurality of first sub-pixels includes a first electrode, electrically connected to a corresponding pixel circuit via a wiring; a light-emitting structure, disposed on the first electrode; and a second electrode, disposed on the light-emitting structure; and a second display region, a light transmittance of the first display region being greater than a light transmittance of the second display region; wherein the first display region includes a conductive layer, the first electrode is electrically connected to the wiring via the conductive layer, and a conductive resistivity of the conductive layer is less than a conductive resistivity of the first electrode and a conductive resistivity of the wiring.