Infrared Gesture Recognition Circuit for Mirror Display
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Solution Overview
Problem
Mirror display devices face issues with fingerprints and stains on the mirror surface due to touch operations, which affect both the mirror and display functions, and the touch operation shields the display screen, impacting the display effect.
Innovation Solution
A display device with a transparent substrate, a transflective film, a display screen, and an infrared gesture recognition circuit that recognizes gestures without direct touch, using infrared LEDs and a photoelectric converter to control the display interface through the transflective film, allowing for both mirror and display functions without compromising the surface cleanliness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch operation is used to control the display device, then the ease of operation is improved, but fingerprints and stains accumulate on the mirror surface
Solution Approach 1:
The patent replaces the mechanical touch operation system with an infrared gesture recognition system. The infrared gesture recognition circuit emits infrared light and detects reflected light from hand gestures, enabling contactless control of the display device. This substitution eliminates direct contact between user fingers and the mirror surface, thereby preventing fingerprints and stains while maintaining ease of operation.
2Ease of operation
If touch operation is used to control the display device, then the ease of operation is improved, but the display effect is degraded due to shielding
Solution Approach 1:
The patent replaces the mechanical touch operation system with an infrared gesture recognition system. The infrared gesture recognition circuit emits infrared light and detects reflected light from hand gestures, enabling contactless control of the display device. This substitution eliminates direct contact between user fingers and the mirror surface, thereby preventing fingerprints and stains while maintaining ease of operation.
3Device complexity
If the infrared gesture recognition circuit is disposed on the same side as the display screen, then the device complexity is reduced, but the measurement precision of gesture recognition is degraded
Solution Approach 1:
The patent segments the functional areas on the transparent substrate by placing the infrared gesture recognition circuit and display screen at different locations. The infrared gesture recognition circuit is positioned at a first location while the display screen is positioned at a second location, with their orthographic projections not overlapping. This spatial segmentation allows the infrared circuit to detect gestures without interference from display content, improving gesture recognition precision while maintaining reasonable device complexity through optimized layout.
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 effectively prevents fingerprints and stains on the mirror surface, maintains the display effect, and allows for seamless interface switching through gesture recognition, enhancing both the mirror and display functions of the device.
Implementation Method 1
at least three infrared light emitting diodes (LEDs)
Implementation Method 2
a photoelectric converter; converting, by the photoelectric converter, received optical signals into an electrical signal
Implementation Method 3
a transflective film disposed on a first side of the transparent substrate
Data Source
AI summary
Disclosed are a display device and a control method. The display device includes: a transparent substrate; a transflective film disposed on a first side of the transparent substrate; a display screen disposed on a second side of the transparent substrate, the first side being opposite to the second side; and an infrared gesture recognition circuit disposed on the second side of the transparent substrate, where an orthographic projection of the infrared gesture recognition circuit on the transparent substrate and an orthographic projection of the display screen on the transparent substrate do not overlap each other; and the infrared gesture recognition circuit is configured to recognize a gesture at a side of the transflective film and control interface display of the display screen according to the determined operation gesture.