Double-Face Display Panel Staggered Electrode Design
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Solution Overview
Problem
Current double-face display panels are complex and costly due to their structure, which consists of two independent display panels, making them thick and heavy, contrary to the trend of making display panels lighter and thinner, and they lack integrated driving circuits for both sides.
Innovation Solution
A double-face display panel design featuring a staggered arrangement of transmission and reflection anodes and cathodes with thin film transistors, allowing for simultaneous display on both sides by electrically connecting the anodes and cathodes with the transistors, and using a pixel isolation layer to prevent light interference, while maintaining a thinner profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two independent display panels are combined to create a double-face display panel, then both front and back faces can display images, but the device becomes thicker and heavier
Solution Approach 1:
The patent merges two independent display panels into a single integrated structure by sharing the organic light-emitting layer and substrate. The anode and cathode are configured with transmission and reflection regions that enable light emission from both front and back faces, eliminating the need for separate panels while achieving double-face display functionality.
Solution Approach 2:
The organic light-emitting layer serves multiple functions simultaneously: it emits light for both front and back displays, and works with both transmission and reflection electrodes. The shared substrate and common driving circuitry provide multi-functionality, reducing overall device complexity and thickness.
2Adaptability or versatility
If two independent display panels are combined to create a double-face display panel, then both front and back faces can display images, but the production cost increases greatly
Solution Approach 1:
The patent combines two display functions into one manufacturing process by using a single organic light-emitting layer and shared substrate. This reduces material costs and simplifies the manufacturing process compared to producing and assembling two separate panels, thereby lowering production costs while maintaining double-face display capability.
Solution Approach 2:
The driving circuitry is designed to control both front and back displays through integrated signal routing, reducing the need for separate driving systems. This universality in the driving mechanism reduces component count and assembly complexity, leading to lower production costs.
3Adaptability or versatility
If two independent display panels are combined to create a double-face display panel, then both front and back faces can display images, but the internal structure becomes complex
Solution Approach 1:
The patent simplifies the internal structure by merging the light-emitting functions of both displays into a single organic light-emitting layer. The transmission anode and reflection cathode are positioned on opposite sides of this shared layer, creating a symmetric and simplified structure compared to two independent panels with separate components.
Solution Approach 2:
The anode and cathode are designed with asymmetric transmission and reflection regions to enable different display modes on front and back faces. This asymmetric design allows optimized light emission characteristics for each face while maintaining an overall simplified structure.
4Adaptability or versatility
If two independent display panels are combined to create a double-face display panel, then both front and back faces can display images, but the driving system becomes complex
Solution Approach 1:
The driving circuitry is designed with universal control capabilities that can address both front and back displays through shared signal lines and control logic. This integrated driving system reduces the complexity of having separate driving circuits for each panel while maintaining full functionality for independent display control.
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 efficient light emission from both sides of the panel, achieving the goal of displaying images on both the front and back faces with improved luminance and reduced thickness, meeting the requirement for lighter and thinner display panels.
Implementation Method 1
electrons and holes are composited in the organic material functional layer 208 to form electron-hole pairs and emit visible light from one side of the transmission anode 207
Implementation Method 2
the reflection anode and the reflection cathode comprise a first transparent conductive pattern, a second transparent conductive pattern and a metal conductive pattern between the first transparent conductive pattern and the second transparent conductive pattern
Data Source
AI summary
The double-face display panel comprises a plurality of pixel units arranged in an array mode, and the pixel unit comprises an anode, a cathode, an organic material functional layer arranged between the anode and the cathode and at least one thin film transistor, wherein the anode comprises a transmission anode and a reflection anode, the cathode comprises a transmission cathode and a reflection cathode, the transmission anode at least corresponds to the reflection cathode, the transmission cathode at least corresponds to the reflection anode, and the reflection anode and the reflection cathode are arranged in a staggered mode; the transmission anode is electrically connected with a drain electrode of the thin film transistor, and the reflection anode is electrically connected with the drain electrode of the thin film transistor.