Backlight Module Photosensitive Array Omnidirectional IR Control
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Solution Overview
Problem
Traditional infrared remote control technologies exhibit strong directionality, requiring precise alignment between infrared transmitters and receivers, which limits their effectiveness.
Innovation Solution
A backlight module with an array layer containing photosensitive units and switch units, integrated with light-emitting chips and a selective light transmission layer, allowing infrared light to be received from any angle and converted into electrical signals for remote control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional infrared transmitters are used, then infrared remote control can be realized, but strong directionality is required which limits effectiveness
Solution Approach 1:
The patent merges the infrared receiver function with the backlight module by integrating photosensitive units directly into the array layer. This combination allows the backlight module to serve dual purposes: providing display illumination and receiving infrared signals from any angle, thereby eliminating the need for separate infrared receiving components and achieving omnidirectional remote control capability.
Solution Approach 2:
The backlight module is designed to perform multiple functions simultaneously. The array layer not only generates display light but also contains photosensitive units that can detect infrared signals from any direction. This multi-functional design eliminates the need for dedicated infrared receiving devices and enables universal remote control operation regardless of device orientation.
2Adaptability or versatility
If photosensitive units are integrated into the array layer, then omnidirectional infrared reception is achieved, but device complexity increases
Solution Approach 1:
The photosensitive units are integrated directly into the array layer structure, merging the infrared detection function with the existing display illumination components. This integration approach avoids adding separate infrared receiving modules and reduces overall system complexity despite the enhanced functionality.
3Reliability
If selective light transmission layer is added, then infrared light transmission is improved, but manufacturing complexity increases
Solution Approach 1:
The selective light transmission layer is constructed using composite material technology that allows specific wavelength transmission. This layer is integrated into the existing array layer structure, utilizing materials that can selectively transmit infrared wavelengths while maintaining compatibility with standard manufacturing processes for display devices.
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 remote control of display devices from any position by integrating photosensitive units into the backlight module, allowing infrared light to be received and converted into electrical signals, thus overcoming the directionality limitations of traditional infrared remote control technologies.
Implementation Method 1
the photosensitive units are configured to sense light of a first wavelength
Implementation Method 2
the selective light transmission layer overlaps the photosensitive unit, allows for transmission of light of a second wavelength, and blocks light other than the light of the second wavelength
Data Source
AI summary
A backlight module and a display device are provided. The backlight module includes a light-emitting substrate. The light-emitting substrate includes a substrate, an array layer disposed on the substrate and including a plurality of photosensitive units and switch units, and a plurality of light-emitting chips disposed on a side of the array layer away from the substrate and staggered from the photosensitive units. The light-emitting chips are electrically connected to at least one of the switch units.