Segmented Display Substrate with Dual Transmittance Materials
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Full-screen display devices require a substrate that balances light transmittance for image display and photosensitive element functionality, where existing substrates either allow too much light to pass, compromising image quality, or block too much light, hindering photosensitive element operation.
Innovation Solution
A display substrate with a first substrate portion made of a material with high light transmittance and a second substrate portion made of a material with lower light transmittance, where the first substrate portion is positioned opposite to the photosensitive element to allow sufficient light transmission while maintaining image display capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a substrate material with high light transmittance is used, then light transmission for photosensitive elements is improved, but image display quality deteriorates
Solution Approach 1:
The substrate is divided into two distinct portions: a first substrate portion with high light transmittance (greater than or equal to 80%) for the photosensitive element area, and a second substrate portion with lower light transmittance (less than 80%) for the display area. This segmentation allows each portion to be optimized for its specific function, resolving the contradiction between light transmission and image display quality.
Solution Approach 2:
Different regions of the substrate are assigned different optical properties tailored to their functional requirements. The first substrate portion uses transparent polyimide material with high transmittance to enable sufficient light for photosensitive elements, while the second substrate portion uses yellow polyimide material with lower transmittance to ensure optimal image display quality. This local differentiation of material properties directly addresses the technical contradiction.
2Manufacturing precision
If a substrate material with low light transmittance is used, then image display quality is improved, but photosensitive element operation deteriorates
Solution Approach 1:
The substrate is segmented into functionally optimized regions where the first substrate portion dedicated to the photosensitive element area uses high-transmittance material to ensure reliable operation, while the second substrate portion for display uses lower-transmittance material for superior image quality. This spatial segmentation resolves the reliability-quality trade-off.
Solution Approach 2:
The substrate exhibits spatially varying optical properties: high transmittance in the photosensitive element region to ensure operational reliability, and low transmittance in the display region to guarantee image quality. This local optimization of material properties simultaneously satisfies both reliability and quality requirements.
3Ease of manufacture
If a uniform substrate material is used, then manufacturing complexity is reduced, but functional performance deteriorates
Solution Approach 1:
While the substrate is segmented into two portions with different materials, both portions use polyimide-based materials that can be processed using similar manufacturing techniques such as coating and curing. This approach maintains manufacturing simplicity while achieving the functional differentiation needed for optimal device performance.
Solution Approach 2:
The substrate employs a composite structure combining transparent polyimide and yellow polyimide materials. These composite materials are integrated through compatible processing methods, allowing the manufacturing complexity to remain manageable while the differentiated optical properties enhance overall device functionality and reliability.
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
Enables normal image display and sufficient light transmission for photosensitive elements, enhancing the operational efficiency of full-screen display devices by using transparent polyimide for high transmittance and yellow polyimide for lower transmittance regions, ensuring stability and reliability.
Implementation Method 1
A light transmittance of the first substrate material is larger than or equal to a light transmittance threshold
Implementation Method 2
a light transmittance of the second substrate material is smaller than the light transmittance threshold
Data Source
AI summary
The present application provides a display substrate, a display panel, and a display device. The display substrate includes a substrate layer. The substrate layer includes a first substrate portion and a second substrate portion joined to each other. The first substrate portion is made of a first substrate material and configured to be disposed opposite to a photosensitive element. The second substrate portion is made of a second substrate material. A light transmittance of the first substrate material is larger than or equal to a light transmittance threshold, and a light transmittance of the second substrate material is smaller than the light transmittance threshold.