Double-Sided Display Panel With Shared Anodes for Thinner Construction
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Solution Overview
Problem
Existing double-sided display panels are bulky, consume high power, and have high production costs due to the stacking of two single-sided panels, necessitating a solution for a thinner and lighter design with integrated drivers.
Innovation Solution
A double-sided display panel design where the first and second display panels are arranged opposite each other with shared anode layers connected through a single data line, allowing independent control of cathodes for simultaneous or differential image display, and a driving circuit utilizing thin film transistors and storage capacitors for efficient signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two single-sided display panels are stacked to achieve double-sided display, then dual-sided display capability is achieved, but the overall thickness and weight increase
Solution Approach 1:
The patent merges two display panels into a single integrated structure by stacking them on opposite sides of a common substrate. The first display panel includes a first anode layer, first light-emitting layer, and first cathode layer, while the second display panel includes a second anode layer, second light-emitting layer, and second cathode layer. Both panels share the same substrate and are connected through through-holes, achieving dual-sided display without requiring two separate panels.
Solution Approach 2:
The patent implements a nested structure where the first and second display panels are embedded on opposite sides of a single substrate. The anode layers are connected through through-holes that penetrate the substrate, creating a compact nested arrangement that reduces overall thickness while maintaining both display functions.
2Adaptability or versatility
If two single-sided display panels are stacked to achieve double-sided display, then dual-sided display capability is achieved, but the overall weight increases
Solution Approach 1:
The patent merges two display panels into a single integrated structure by stacking them on opposite sides of a common substrate. This consolidation shares common components including the substrate, through-holes, and wiring structures, thereby reducing the total material usage and overall weight compared to using two separate single-sided panels.
Solution Approach 2:
The substrate serves multiple functions simultaneously: it provides mechanical support for both display panels, acts as an insulating layer, and serves as the base structure for the through-holes that connect the anode layers. This multi-functionality reduces the need for additional components and reduces overall weight.
3Adaptability or versatility
If two single-sided display panels are stacked to achieve double-sided display, then dual-sided display capability is achieved, but power consumption increases
Solution Approach 1:
The patent merges the power supply and control systems of both display panels into a shared architecture. The first and second anode layers are connected through through-holes, allowing common wiring and power distribution networks to serve both panels. The driving circuit includes first and second driving circuits that can independently control each panel while sharing common power supply lines, reducing redundant power consumption.
Solution Approach 2:
The driving circuit is designed with multi-functionality to control both display panels efficiently. The first driving circuit controls the first display panel while the second driving circuit controls the second display panel, but both can share common power supply voltage lines and control signals when displaying identical content, reducing overall power consumption compared to completely independent control systems.
4Adaptability or versatility
If two single-sided display panels are stacked to achieve double-sided display, then dual-sided display capability is achieved, but production cost increases
Solution Approach 1:
The patent merges the manufacturing process into a single integrated fabrication sequence rather than requiring separate manufacturing and assembly of two independent panels. The first and second display panels are formed on opposite sides of the same substrate using sequential coating and patterning steps, allowing both panels to be manufactured simultaneously in one production run, thereby reducing labor and facility costs.
Solution Approach 2:
The substrate is prepared in advance with the through-holes and insulating layers before the display panel layers are formed. This preliminary preparation of the substrate structure enables subsequent straightforward formation of both display panels without requiring complex post-assembly operations, reducing manufacturing complexity and cost.
Data Source
AI summary
A double-sided display panel, a driving circuit, a driving method, and a display device are disclosed. The double-sided display panel includes a substrate, and a first and a second display panel opposite to each other. The first and the second display panels are arranged on the substrate. A display surface of the first display panel and a display surface of the second display panel are arranged to face away from each other. The first display panel includes a first anode layer, a first light-emitting layer, and a first cathode layer stacked in sequence. The second display panel includes a second anode layer, a second light-emitting layer, and a second cathode layer stacked in sequence. The first and the second anode layers are connected. An orthogonal projection of the first anode layer on the substrate overlaps or coincides with an orthogonal projection of the second anode layer on the substrate.