Transparent Organic Light Emitting Display with Electrochromic Light Control
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Solution Overview
Problem
Current display technologies, such as liquid crystal displays, require additional light sources and are not capable of controlling light transmittance, limiting their application and functionality, especially in transparent and flexible forms.
Innovation Solution
A display apparatus comprising a transparent organic light emitting device with emission and transmission regions, combined with a light transmission control device that includes a sealed cavity with a transmission control material layer, allowing for selective control of external light transmission, enabling both image emission and object visibility while adjusting light observation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a liquid crystal display is used, then light transmittance control is achieved, but additional light sources and complex structures are required
Solution Approach 1:
The patent combines the display function and light transmittance control function into a single device. The organic light emitting display device itself controls light transmittance by adjusting its emission characteristics, eliminating the need for separate liquid crystal layers or additional light sources. This merging of functions reduces structural complexity while maintaining adaptability.
Solution Approach 2:
The display device performs light transmittance control using its own emitted light and structural characteristics, without requiring external light sources or additional control layers. The organic light emitting diodes and transmission regions work together to autonomously regulate light transmission based on display requirements.
2Shape
If the display apparatus is made transparent, then flexibility and aesthetic appeal are improved, but control over light transmission is degraded
Solution Approach 1:
The display device is divided into distinct emission regions and transmission regions. The emission regions contain organic light emitting diodes for active display, while the transmission regions allow external light to pass through for background visibility. This segmentation enables the transparent display to maintain both transparency and controllable light transmission characteristics.
Solution Approach 2:
Different regions of the display device have different optical properties tailored to their specific functions. Emission regions are designed with light-emitting materials and structures, while transmission regions use transparent materials with optimized thickness and composition. This local differentiation allows the overall device to be transparent while providing localized control over light transmission.
3Adaptability or versatility
If the display apparatus is made flexible, then wearability and application versatility are improved, but manufacturing precision and reliability are degraded
Solution Approach 1:
The display device uses flexible substrates and thin-film structures throughout its construction. The base substrate, electrode layers, organic light emitting layers, and encapsulation layers are all formed as thin, flexible structures that can bend without cracking. This flexible film architecture enables the display to be bent into various shapes while maintaining manufacturing precision through established thin-film deposition techniques.
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 allows for high-quality image display with adjustable light transmittance, enabling simultaneous observation of images and objects, improving user experience by controlling light transmission without degrading image brightness, and supporting flexible and transparent display applications.
Implementation Method 1
a transparent organic light emitting device including a first region having an emission region capable of emitting light
Implementation Method 2
the fourth region may include a sealed cavity having a transmission control material layer therein, and the transmission control material layer is configured to be selectively driven by the light transmission control device
Data Source
AI summary
A display apparatus capable of controlling light transmittance includes: a transparent organic light emitting device comprising a first region including an emission region capable of emitting light and a second region adjacent to the first region in a horizontal direction and including a transmission region capable of transmitting external light therethrough; and a light transmission control device coupled to and facing the transparent organic light emitting device, the light transmission control device comprising a third region formed at a location corresponding to the first region and a fourth region adjacent to the third region in the horizontal direction and positioned to correspond to the second region, wherein the fourth region comprises a sealed cavity having a transmission control material layer therein, and the transmission control material layer is configured to be selectively driven by the light transmission control device.