Display Device Dual-Mode Switching via Refractive Index Control
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Solution Overview
Problem
Existing display devices face challenges in meeting consumer expectations for quality and functionality, particularly in switching between display and projection modes efficiently.
Innovation Solution
A display device comprising a light emitting module, a modulating module with a modulating material layer, and a control circuit that switches between display and projection modes by adjusting the distance between the light emitting module and lenses, or by adjusting the refractive index of the modulating material layer, allowing for different light transmission directions in each mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display device is designed to support both display mode and projection mode, then the versatility and functionality are improved, but the device complexity increases
Solution Approach 1:
The display device is designed with a universal optical engine that can operate in both display mode and projection mode by adjusting the light transmission path. The same light emitting module and modulating module serve dual purposes, with the ability to redirect light differently for projection or transmit directly for display, eliminating the need for separate projection and display systems
Solution Approach 2:
The device incorporates dynamic control mechanisms including a control circuit that can switch between modes by adjusting the position of the light emitting module relative to the modulating module, or by changing the refractive index of the modulating material layer through voltage control, enabling flexible adaptation between display and projection functions
2Adaptability or versatility
If the light transmission path is adjusted to switch between display and projection modes, then the adaptability is improved, but the control complexity increases
Solution Approach 1:
The control circuit switches between display and projection modes by changing physical parameters: either adjusting the distance between the light emitting module and modulating module, or changing the refractive index of the modulating material layer through voltage application. These parameter changes enable mode switching without complex mechanical reconfiguration
Solution Approach 2:
The patent replaces complex mechanical switching mechanisms with electrical control methods. Instead of physically reconfiguring optical paths with moving mirrors or lenses, the system uses voltage-controlled refractive index changes in the modulating material layer to redirect light paths, simplifying the control mechanism
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 seamless switching between display and projection modes, enhancing image quality and versatility by adjusting light transmission paths, and improving image visibility from various angles in display mode and projecting images in projection mode.
Implementation Method 1
adjusting the refractive index of the modulating material layer, allowing for different light transmission directions in each mode
Data Source
AI summary
A display device and a method for controlling the display device are provided herein. The display device has a light emitting module, a modulating module, and a control circuit. The light emitting module has a plurality of light emitting units. The modulating module is disposed on the light emitting module and has a modulating material layer. The control circuit is electrically connected to the modulating module and configured to switch the display device between a display mode and a projection mode.