Transparent Display Infrared Sensor Flickering Control
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Solution Overview
Problem
In bezel-less phones, the infrared sensor stacked below the display screen causes electron migration, leading to local flickering of the display screen during operation, which negatively impacts user experience.
Innovation Solution
A control method for electronic devices with a transparent display screen and an infrared sensor, where the device determines if it's in an outgoing call state and reduces screen brightness, and turns on the infrared sensor to detect distance, while also determining if it's approaching a user to further adjust brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the infrared sensor is stacked below the display screen to achieve bezel-less design, then the screen occupation proportion is improved, but the display screen produces local flickering due to electron migration caused by infrared light
Solution Approach 1:
The infrared sensor is controlled to operate in periodic intervals rather than continuously. The control unit activates the infrared sensor only at specific time points (when needed for distance detection) and keeps it inactive at other times, creating a periodic operation pattern that prevents continuous infrared light emission and subsequent electron migration causing flickering
Solution Approach 2:
The system discards the continuous operation mode of the infrared sensor and recovers by implementing an intermittent operation mode. The infrared sensor is turned off during normal display operation and only activated temporarily when distance detection is required, then discarded again until the next detection need arises
2Reliability
If the infrared sensor is activated continuously to ensure accurate distance detection, then the detection reliability is improved, but the flickering phenomenon worsens
Solution Approach 1:
The infrared sensor operates periodically rather than continuously, being activated only at specific intervals when distance detection is needed. This periodic operation maintains detection reliability for call functions while significantly reducing the overall emission time of infrared light, thereby minimizing electron migration and flickering effects on the display screen
Solution Approach 2:
The control unit intelligently determines when distance detection is actually needed (such as during outgoing calls) and activates the infrared sensor only at those moments. The system serves itself by autonomously managing the infrared sensor's operation timing based on detected call states, eliminating unnecessary activation that would cause flickering
3Object-affected harmful factors
If the screen brightness is reduced during outgoing calls to minimize flickering, then the flickering effect is improved, but the visibility of the display screen worsens
Solution Approach 1:
The system discards high brightness operation during outgoing calls and recovers to normal brightness when calls are not in progress. By temporarily reducing brightness only during the specific period when the infrared sensor is active for distance detection, the flickering effect is minimized while maintaining full visibility during normal operation periods
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
This method reduces the flickering effect caused by the infrared sensor, enhancing user experience by minimizing unnecessary screen brightness during calls and proximity detection.
Implementation Method 1
The infrared sensor is configured to emit infrared light and receive infrared light reflected by an object, to detect a distance between the object to the electronic device
Implementation Method 2
receive infrared light reflected by an object
Implementation Method 3
transparent display screen
Data Source
AI summary
A control method for an electronic device, an electronic device and a computer-readable storage medium are provided. An electronic device includes a transparent display screen and an infrared sensor. The transparent display screen includes a display area. The infrared sensor is stacked below the display area. The infrared sensor is configured to emit infrared light and receive infrared light reflected by an object, to detect a distance between the object and the electronic device. The control method includes operations as follows. It is determined whether the electronic device is in an outgoing call state. Control is performed to reduce the brightness of the transparent display screen in a case that the electronic device is in the outgoing call state. Control is performed to turn on the infrared sensor to detect a distance between the object and the electronic device.