Double-Sided Emissive Organic Display Device Monolithic Integration
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Solution Overview
Problem
Conventional double-sided emissive display devices are complex, expensive, and thick due to the need for two independent single-sided emissive display devices bonded back-to-back, lacking a monolithic and fully integrated design, and often display content is not laterally correct on both sides.
Innovation Solution
A double-sided emissive organic display device with a single carrier, control element layer structure, and encapsulation, featuring bottom and top organic light emitting components that emit light in opposite directions, allowing for independent and lateral correct image representation on both sides, reducing production and material costs by integrating both display directions into a single, monolithic unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two independent single-sided emissive display devices are bonded back-to-back to create a double-sided emissive display device, then double-sided display capability is achieved, but device complexity, production cost, and thickness increase
Solution Approach 1:
The patent merges two separate display devices into a single integrated structure by bonding two organic light emitting component layers to opposite sides of a common control element layer structure. This eliminates the need for separate carriers, control layers, and encapsulations for each side, reducing overall device complexity while maintaining double-sided display capability.
Solution Approach 2:
The control element layer structure serves a dual function by controlling both the first organic light emitting components (visible from front side) and the second organic light emitting components (visible from rear side). This multi-functionality reduces the need for separate control systems for each display side.
2Adaptability or versatility
If two independent single-sided emissive display devices are bonded back-to-back, then double-sided display capability is achieved, but production cost and material cost increase
Solution Approach 1:
The patent combines two display devices into one integrated structure, reducing material requirements. Specifically, only one carrier, one control element layer structure, and one encapsulation layer are needed instead of two sets of each, directly reducing material costs and simplifying the manufacturing process.
3Adaptability or versatility
If two independent single-sided emissive display devices are bonded back-to-back, then double-sided display capability is achieved, but device thickness increases
Solution Approach 1:
By integrating both display sides into a single monolithic structure with shared components (carrier, control layer, encapsulation), the patent eliminates the need to stack two complete devices, thereby reducing overall thickness while maintaining double-sided functionality.
4Device complexity
If a monolithic integrated double-sided emissive display device is created, then device complexity and production cost are reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent segments the manufacturing process into distinct stages: first forming the control element layer structure with its carrier and encapsulation, then bonding the first organic light emitting components to one side, and finally bonding the second organic light emitting components to the other side. This segmentation allows for controlled alignment at each stage rather than requiring perfect alignment of all components simultaneously.
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 enables a thin, cost-effective, and monolithically integrated double-sided emissive display device that can display different content laterally correctly on both sides, reducing material and production costs while simplifying the manufacturing process.
Implementation Method 1
a plurality of first organic light emitting components, which are formed above the carrier, which are electrically connected to the control element layer structure and which are driven by means of the control element layer structure during the operation of the double-sided emissive organic display device and emit first light
Data Source
AI summary
A double-sided emissive organic display device includes a carrier, a control element layer structure above the carrier, a plurality of first organic light emitting components, which are formed above the carrier, which are electrically connected to the control element layer structure and which are driven by means of the control element layer structure during the operation of the double-sided emissive organic display device and emit first light substantially in a direction toward the carrier, and a plurality of second organic light emitting components, which are formed above the control element layer structure and which are electrically connected to the control element layer structure and which are driven by means of the control element layer structure during the operation of the double-sided emissive organic display device and emit second light substantially in a direction away from the carrier.