Grating-Function Layer for Versatile Double-Sided OLED Displays
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Solution Overview
Problem
Current double-sided OLED display devices have complex structures and high costs, limiting their widespread adoption for applications requiring dual-sided viewing, such as digital signage and public displays.
Innovation Solution
A display panel with a grating-function layer between two substrates, featuring controllable light blocking and transmissive regions, allows for single-sided 2D or double-sided 2D/3D displays by adjusting the positions of these regions and controlling light emission from double-sided light-emitting units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a double-sided display device is implemented using prior art methods, then two persons can view the displayed screen at two opposite sides simultaneously, but the structure becomes complicated and the cost increases
Solution Approach 1:
The patent applies multi-functionality by enabling a single display panel to perform multiple display modes (single-sided 2D display, double-sided 2D display, and double-sided 3D display) through the integration of a grating-function layer with controllable light blocking and transmissive regions. This allows the same hardware structure to adapt to different viewing requirements without needing separate devices for each mode, thereby reducing overall system complexity while maintaining versatility.
Solution Approach 2:
The patent implements dynamics by making the grating-function layer controllable, with regions that can dynamically switch between light blocking and light transmissive states. This dynamic control enables the display panel to flexibly adjust its viewing characteristics in real-time, allowing transition between different display modes (single-sided/double-sided, 2D/3D) without physical reconfiguration, thus simplifying the overall device structure while maintaining adaptability.
2Adaptability or versatility
If a double-sided display device is implemented using prior art methods, then two persons can view the displayed screen at two opposite sides simultaneously, but the cost increases
Solution Approach 1:
The patent reduces manufacturing cost by designing a universal display panel structure that can serve multiple functions (single-sided 2D, double-sided 2D, and double-sided 3D display). By integrating the grating-function layer into the base OLED structure, the patent eliminates the need for separate hardware systems for each display mode, thereby reducing overall manufacturing complexity and cost while maintaining full versatility.
Solution Approach 2:
The patent combines multiple display functionalities into a single integrated panel structure by merging the OLED light-emitting units with the controllable grating-function layer. This integration allows the same physical structure to deliver multiple display capabilities, reducing the need for separate components and assemblies, thereby simplifying manufacturing processes and reducing production costs.
3Adaptability or versatility
If a grating-function layer with controllable light blocking regions is added, then versatile display configurations are enabled, but the device structure becomes more complex
Solution Approach 1:
The patent applies segmentation by dividing the display panel into distinct functional layers: OLED light-emitting units and a grating-function layer with controllable light blocking regions. This segmentation allows each layer to perform its specific function independently, making the overall system more manageable and easier to control despite the increased number of layers. The modular structure enables flexible configuration control without requiring complex integration across the entire device.
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 versatile display configurations, including single-sided 2D, double-sided 2D, and double-sided 3D displays, diversifying functionality while simplifying implementation and reducing costs.
Implementation Method 1
the electrochromic layer is configured to be in a light blocking state so as to form the light blocking regions of the grating-function layer when there is an electric field between the first electrodes and the second electrodes, and to be in a transparent state so as to form the light transmissive regions of the grating-function layer when there is no electric field between the first electrodes and the second electrodes
Implementation Method 2
the first substrate being provided with a plurality of first light-emitting units which are double-sided light emitting devices thereon, the second substrate being provided with a plurality of second light-emitting units which are double-sided light emitting devices thereon
Data Source
AI summary
A display panel comprises a first substrate and a second substrate which are assembled to form a cell and a control unit. The first substrate is provided with a plurality of first light-emitting units which are double-sided light emitting devices thereon, and the second substrate is provided with a plurality of second light-emitting units which are double-sided light emitting devices thereon. The control unit is configured to control the first light-emitting units and the second light-emitting units to emit light or not to emit light. The display panel further comprises a grating-function layer interposed between the first substrate and the second substrate. The grating-function layer comprises controllable light blocking regions and controllable light transmissive regions, and the light blocking regions and the light transmissive regions cooperate with the first light-emitting units and the second light-emitting units to realize single-sided display or double-sided display.