Switchable Optical Mirror Layout for Thin Double-Sided LED Displays
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Solution Overview
Problem
Existing display devices that provide double-side display are bulky due to their thickness, hindering the thinning of the device and affecting its competitiveness.
Innovation Solution
A light-emitting diode (LED) display device incorporating a translucent display panel and a switchable optical mirror, controlled by a switch controller, which switches between reflection and transparent states synchronously with the LEDs to enable double-side display while reducing the device's thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a substrate is used to attach display devices at both sides, then double-side display function is achieved, but the thickness of the device increases
Solution Approach 1:
The patent merges the substrate and switchable optical mirror into a single integrated component. The switchable optical mirror serves dual functions: as a reflective surface for displaying images on one side and as a transparent window for displaying images on the other side. This eliminates the need for a separate substrate, thereby reducing device thickness while maintaining double-side display capability.
Solution Approach 2:
The switchable optical mirror is designed to perform multiple functions: it acts as a reflective mirror when needed for one-sided display, and as a transparent window for the other side's display. This multi-functionality allows a single component to replace what would traditionally require multiple separate components (substrate plus mirror), thus reducing overall device thickness.
2Length of moving object
If the device thickness is reduced for thinning, then the volume decreases, but the structural complexity increases
Solution Approach 1:
By combining the substrate and switchable optical mirror into one integrated component, the patent reduces the number of separate parts needed in the structure. This integration simplifies the overall structural complexity despite achieving reduced thickness, as fewer discrete components need to be assembled and managed.
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 allows for effective double-side display while significantly reducing the thickness of the device, enhancing its competitiveness by enabling synchronized switching between display states.
Implementation Method 1
the metal hydride mirror layer is configured to switch between a transparent state and a reflection state according to a signal of the switch controller
Implementation Method 2
The translucent display panel has a plurality of light-emitting diodes. The light-emitting diodes are configured to emit a light beam toward the switchable optical mirror
Implementation Method 3
The liquid crystal layer is located between the first transparent conductive layer and the second transparent conductive layer, in which the liquid crystal layer is configured to switch between a horizontal state and a vertical state according to a signal of the switch controller
Implementation Method 4
The flexible mirror layer is located on the dielectric layer, in which the flexible mirror layer is configured to switch between a curled state and a flat state according to a signal of the switch controller
Data Source
AI summary
A light-emitting diode display device includes a translucent display panel, a switchable optical mirror and a switch controller. The translucent display panel has a plurality of light-emitting diodes. The switchable optical mirror is located at a side of the translucent display panel, in which the light-emitting diodes are configured to emit a light beam toward the switchable optical mirror respectively. The switch controller electrically connects the switchable optical mirror and the light-emitting diodes and is configured such that the switchable optical mirror and the light-emitting diodes to switch between a first display state and a second display state synchronously.