Transparent Display Non-Display Area Light Transmittance
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Solution Overview
Problem
Current transparent display apparatuses face challenges in achieving high external light transmittance while maintaining image display functionality, particularly in the non-display areas, which affects the overall transparency and usability of these devices.
Innovation Solution
The design incorporates a substrate with a display area and a non-display area, where pixels are arranged in a matrix with alternating light-emitting and transmission areas, and a power supply line with openings for external light transmission, along with an insulating layer and conductive layers that allow for efficient light transmission without compromising the display functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power supply lines and driver circuits are disposed in the non-display area, then electrical connectivity and device functionality are ensured, but external light transmittance in the non-display area is reduced
Solution Approach 1:
The non-display area is segmented into multiple regions: a first non-display area with power supply lines and driver circuits, and a second non-display area with enhanced light transmittance. The power supply lines are divided into segments with alternating transparent and opaque portions, allowing light to pass through transparent segments while maintaining electrical connectivity through opaque segments.
Solution Approach 2:
Different regions of the non-display area are assigned different optical properties. The first non-display area contains opaque power supply lines for electrical functionality, while the second non-display area is designed with transparent characteristics for enhanced light transmission. The driver circuit is positioned in a region that balances both electrical functionality and light transmittance requirements.
2Illumination intensity
If the non-display area is made transparent for external light transmission, then overall device transparency is improved, but electrical connectivity and signal transmission are compromised
Solution Approach 1:
The power supply line structure is segmented into alternating transparent and opaque portions along its length. This segmentation allows different sections to serve different functions: opaque portions provide electrical connectivity and signal transmission, while transparent portions allow external light to pass through, maintaining overall device transparency.
Solution Approach 2:
The power supply line acts as an intermediary structure that reconciles the conflicting requirements of electrical connectivity and light transmission. By incorporating both opaque (conductive) and transparent (optically permissive) portions, the power supply line mediates between the need for electrical functionality and the desire for overall device transparency.
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
This configuration enhances the transmittance of external light through non-display areas while maintaining image display capabilities, improving the overall transparency and usability of the transparent display apparatus.
Implementation Method 1
An organic light-emitting display apparatus may be a self-emissive display apparatus
Data Source
AI summary
A display apparatus includes a display area and a non-display area around the display area. A substrate includes a plurality of pixels. Each pixel includes a first area through which light is emitted and a second area through which external light is transmitted. The plurality of pixels is arranged in a matrix in the display area. The substrate includes a transmission area, through which external light is transmitted, in the non-display area. An encapsulation thin film seals the substrate.