Double-Sided OLED Panel Merging Backplates to Reduce Thickness
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Solution Overview
Problem
Conventional double-sided OLED display panels require two individual OLED backplates bonded together, resulting in increased thickness, complexity, and higher manufacturing costs, which fail to meet consumer demands for lightweight, compactness, and a high performance-price ratio.
Innovation Solution
The double-sided OLED display panel divides each sub-pixel into top and bottom emission regions, using a single underlay substrate with a thin film transistor array layer, planarization layer, anode and cathode metal layers, and an organic barrier layer, along with a glass cover lid, to achieve double-sided display while reducing thickness and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two individual OLED backplates are bonded together to achieve double-sided display, then double-sided display function is achieved, but thickness increases and structure becomes more complicated
Solution Approach 1:
The patent merges two separate OLED backplates into a single integrated OLED backplate with dual emission regions. The OLED device layer is configured to emit light from both top and bottom surfaces, eliminating the need for bonding two separate panels together. This integration reduces structural complexity while maintaining the double-sided display function.
Solution Approach 2:
The patent utilizes the third dimension (vertical stacking) by configuring the OLED device layer to emit light in opposite directions (top and bottom) from the same plane. This dimensional approach allows double-sided display without requiring two separate panels, thereby reducing overall thickness and structural complexity.
2Adaptability or versatility
If two individual OLED backplates are bonded together to achieve double-sided display, then double-sided display function is achieved, but manufacturing cost increases
Solution Approach 1:
The patent combines the functionality of two separate OLED panels into a single panel, reducing material consumption and manufacturing steps. By using one OLED device layer with dual emission regions instead of two separate panels, the manufacturing process is simplified and costs are reduced.
Solution Approach 2:
The OLED device layer is designed to perform multiple functions simultaneously - it emits light from both top and bottom surfaces, serving as a single component that replaces what would traditionally require two separate panels. This multi-functionality reduces manufacturing complexity and cost.
3Adaptability or versatility
If two individual OLED backplates are bonded together to achieve double-sided display, then double-sided display function is achieved, but weight increases
Solution Approach 1:
The patent merges two separate OLED backplates into one integrated structure, eliminating the weight of one entire panel including its substrate, electrode layers, and encapsulation. This integration directly reduces the overall weight while maintaining double-sided display capability.
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 design reduces the overall thickness of the OLED display panel, simplifies the manufacturing process, and decreases costs, while maintaining high performance and functionality.
Implementation Method 1
an organic light emitting diode (OLED) display has many advantages of self-luminescence
Data Source
AI summary
A double-sided organic light emitting diode (OLED) display panel is disclosed and includes a plurality of sub-pixels each of which has a top emission region and a bottom emission region. The top emission region has a first anode metal layer, a first OLED device layer, a first cathode metal layer, and an organic barrier layer. The bottom emission region has a second anode metal layer, a second OLED device layer, and a second cathode metal layer. The present invention can reduce an overall thickness of the double-sided OLED display panel.