Double-Side Graphene Display Substrate with Reflective Layer
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Solution Overview
Problem
Conventional double-side liquid crystal displays are structurally complex, heavy, and consume high power due to the need for two panels and corresponding backlights, leading to poor energy efficiency and emission reduction.
Innovation Solution
A TFT array substrate with two graphene display units positioned on opposite sides of a reflective layer, utilizing graphene oxide for gate electrodes and reduced graphene oxide for light-emitting and electrode layers, which improves brightness, simplifies structure, reduces volume, and enables flexible displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If two liquid crystal display panels and corresponding backlights are used for double-side display, then display coverage is improved, but device complexity increases
Solution Approach 1:
The patent merges two display units into a single substrate structure, where the first and second display units are formed on opposite surfaces of the same substrate. This eliminates the need for separate panels and backlights, reducing structural complexity while maintaining double-side display functionality.
Solution Approach 2:
The single substrate serves multiple functions: it acts as the structural base for both display units, provides mechanical support, and enables dual-sided display functionality. This multi-functionality reduces the overall number of components needed in the system.
2Area of stationary object
If two liquid crystal display panels and corresponding backlights are used for double-side display, then display coverage is improved, but weight increases
Solution Approach 1:
By combining two display units into a single integrated substrate structure, the patent eliminates redundant components such as separate backlights and support structures. This integration significantly reduces the overall weight while maintaining full double-side display coverage.
3Illumination intensity
If high brightness backlight is used for clear display in bright circumstances, then display visibility is improved, but power consumption increases
Solution Approach 1:
The display units utilize the substrate itself as a reflective surface, eliminating the need for high-power backlights. The reflective substrate enhances light output efficiency, allowing for lower power consumption while maintaining adequate display brightness.
4Ease of manufacture
If conventional display structure is used, then manufacturing is straightforward, but display volume is large
Solution Approach 1:
The patent employs a nested structure where the first and second display units are integrated within a single substrate thickness. The gate electrodes, active layers, and electrode layers are stacked in multiple layers within the same volume, achieving high integration density without increasing overall display volume.
Solution Approach 2:
The patent transitions from a planar two-dimensional layout to a three-dimensional stacked architecture. Multiple display units and electrode layers are arranged in the vertical dimension (thickness direction), enabling compact volume while maintaining manufacturing feasibility through sequential deposition processes.
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 enhances image resolution, reduces power consumption, and allows for a thinner, lighter double-side display with improved brightness and flexibility, while using graphene oxide to drive pixel display rates and minimize aliasing.
Implementation Method 1
a reflective layer disposed between the two graphene display units
Implementation Method 2
the light-emitting layer, the source electrode and the drain electrode are made out of reduced graphene oxide
Data Source
AI summary
The disclosure provides a double-side display, a display module and a TFT array substrate thereof, the TFT substrate includes two graphene display units disposed opposite and a reflective layer disposed between the two graphene display units. Compared with a conventional technique, according to the double-side display, the display module and the TFT array substrate thereof, the graphene display units are disposed on the two sides of the reflective layer respectively to prevent influence between light of the two sides of the reflective layer, brightness of two display units is improved due to reflective light from the reflective layer; the structure of the double-side display is simpler, and the volume is reduced significantly, which are benefit for thinning and lightening the double-side display.