Transparent Display Polymer Substrate with Colored Particles
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Solution Overview
Problem
Transparent display devices with resin substrates face deterioration during device processing, affecting their transmissive and mechanical properties.
Innovation Solution
A transparent display device is manufactured using a polymer substrate with colored particles dispersed throughout, including a pixel circuit, electrodes, and a display layer, where the substrate is formed by coating a precursor composition containing nano-particles and blue dye, and then cured to create a colored polymer material with enhanced heat resistance and mechanical stability, allowing for improved transmittance and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transparent resin substrate is used to achieve transparency and flexibility, then the display device can be folded or bended, but the resin material may be chemically modified during device processing causing deterioration of properties
Solution Approach 1:
The patent employs a composite substrate structure combining a resin substrate with a transparent inorganic film layer. This composite approach allows the resin to provide flexibility while the inorganic film prevents chemical modification during processing, thus maintaining both adaptability and reliability.
Solution Approach 2:
The patent modifies the resin substrate by forming an inorganic film layer with specific optical and chemical properties. This parameter change transforms the substrate from a chemically reactive state to a chemically stable state while preserving transparency and flexibility.
2Ease of manufacture
If conventional transparent substrates are used, then the device can be manufactured, but the transmissive properties deteriorate during processing
Solution Approach 1:
The composite structure of resin substrate plus transparent inorganic film maintains high transmissivity while enabling standard device processing. The inorganic film acts as a protective barrier that prevents degradation of optical properties during manufacturing steps.
3Illumination intensity
If the substrate is made transparent and flexible, then the display device achieves desired optical and mechanical properties, but the substrate undergoes chemical modification during processing
Solution Approach 1:
The patent creates a composite where the transparent inorganic film layer protects the resin substrate from chemical modification. This maintains both the transparency of the substrate and its chemical stability during device processing.
Solution Approach 2:
The transparent inorganic film acts as an intermediary layer between the resin substrate and the processing environment. It mediates the interaction by preventing harmful chemical modifications while allowing light transmission.
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 results in a transparent display device with improved transmissive and mechanical properties, maintaining flexibility and heat resistance while preventing substrate deterioration, thus enhancing the overall performance and durability of the device.
Implementation Method 1
The precursor composition is cured to form a transparent substrate on the carrier substrate. The transparent substrate includes a colored polymer material.
Implementation Method 2
a transparent flexible substrate divided into a pixel area and a transmission area and including colored particles dispersed therein throughout the pixel area and the transmission area
Data Source
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AI summary
A transparent display device including a polymer substrate having colored particles distributed therein, a pixel circuit on the polymer substrate, a first electrode electrically connected to the pixel circuit, a display layer on the first electrode, and a second electrode facing the first electrode and covering the display layer.