Double-Sided OLED Substrate Gate-Common Electrode Integration
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Solution Overview
Problem
The existing methods for manufacturing double-sided OLED display screens are complex, costly, and inefficient, leading to increased thickness, weight, and production time, which hinders market adoption and display quality.
Innovation Solution
A double-sided display substrate design where the front and back side light-emitting layers are interposed between pixel and common electrode layers, with the common electrode layer shared with the gate electrode layer of the driving transistor, allowing for a simplified manufacturing process and reduced thickness and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two separate OLED screens are bonded together to achieve double-sided display, then double-sided display function is realized, but manufacturing complexity increases and production costs rise
Solution Approach 1:
The patent merges the common electrode layer with the gate electrode layer of the driving transistor, creating a multi-functional layer that serves both as a common electrode for the OLED light-emitting structure and as the gate electrode for transistor control. This integration eliminates the need for separate electrode layers, simplifying the manufacturing process while maintaining double-sided display functionality.
Solution Approach 2:
The gate electrode layer of the driving transistor is designed to serve dual purposes: functioning as the control electrode for the transistor and simultaneously serving as the common electrode for both front and back side light-emitting layers. This multi-functionality reduces the total number of layers and manufacturing steps required.
2Adaptability or versatility
If two separate OLED screens are bonded together to achieve double-sided display, then double-sided display function is realized, but thickness and weight increase
Solution Approach 1:
By integrating the common electrode layer with the gate electrode layer, the patent eliminates redundant structural layers that would otherwise be present in a bonded dual-screen configuration. This merging of functions directly reduces the overall thickness and weight of the display device.
3Adaptability or versatility
If two separate OLED screens are bonded together to achieve double-sided display, then double-sided display function is realized, but production cycle and energy consumption increase
Solution Approach 1:
The integration of the common electrode and gate electrode layers into a single manufacturing step eliminates the need for separate processing of multiple electrode layers. This reduces the number of deposition and patterning steps, thereby shortening the production cycle and reducing energy consumption.
4Adaptability or versatility
If two separate OLED screens are bonded together to achieve double-sided display, then double-sided display function is realized, but manufacturing cost increases
Solution Approach 1:
By combining the common electrode layer with the gate electrode layer, the patent reduces the total number of material deposits and patterning operations required. This integration directly lowers material costs, processing costs, and energy consumption, thereby reducing overall manufacturing cost.
Data Source
AI summary
The present invention provides a double-sided display substrate and a manufacturing method thereof and a display device. The double-sided display substrate includes several sub-pixel units, the sub-pixel unit includes a front side light-emitting layer provided for front side displaying, a back side light-emitting layer provided for back side displaying, a pixel electrode layer, a common electrode layer, and a driving transistor, and the front side light-emitting layer and the back side light-emitting layer are interposed between a corresponding pixel electrode layer and the common electrode layer, respectively, the common electrode layer corresponding to the back side light-emitting layer and/or the front side light-emitting layer is disposed in the same layer as a gate electrode layer of the driving transistor. According to the double-sided display substrate, quick manufacture and spread of the double-sided display substrate are realized.