Foldable Screen Ambient Light Sensing Without Sensor Shielding
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Solution Overview
Problem
Existing electronic devices with foldable flexible screens face challenges in accurately detecting ambient light due to shielding of light sensors in different states, leading to inaccurate display brightness adjustments.
Innovation Solution
Arranging multiple light sensors at different orientations and positions on the electronic device to detect ambient light from various directions, selecting the unshielded sensor for accurate data, and using a processing module to determine the target detection data based on the device's state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single light sensor is used to detect ambient brightness, then the device structure is simple, but the detection accuracy deteriorates under different screen states due to shielding
Solution Approach 1:
The patent divides the light detection function into multiple segments by placing separate light sensors at different positions (front surface and back surface) with different orientations. This segmentation allows each sensor to detect light from specific directions, and the system selects the appropriate sensor based on screen state, resolving the shielding problem while maintaining manageable complexity through modular sensor placement.
Solution Approach 2:
The patent applies local quality by assigning different detection characteristics to different light sensors based on their specific positions and orientations. The front surface sensor detects ambient light from the front direction, while the back surface sensor detects from the back direction. This localized optimization of detection quality for different spatial positions enables accurate ambient light measurement regardless of screen folding state.
2Adaptability or versatility
If multiple light sensors are arranged at different positions and orientations, then the flexibility of ambient light detection is improved, but the device complexity increases
Solution Approach 1:
The patent implements universality by designing a multi-functional light detection system where multiple light sensors serve different detection purposes based on screen state. The same set of sensors (front and back surface sensors) can detect ambient light from different directions depending on whether the screen is unfolded or folded, making the sensor system universally applicable to various device states without requiring separate dedicated sensors for each state.
Solution Approach 2:
The patent applies dynamics by making the light sensor selection adaptive to the device state. The system dynamically switches between different light sensors based on real-time detection of screen folding state, allowing the detection system to adapt its configuration rather than being fixed. This dynamic adaptation provides flexibility while avoiding the need for all sensors to be simultaneously active, thus managing complexity.
3Measurement precision
If the light sensor is shielded in folded state, then the device structure is compact, but the detection accuracy deteriorates
Solution Approach 1:
The patent resolves the shielding problem by adding a spatial dimension to the light detection system. Instead of relying on a single sensor positioned only on the front surface, the system adds a second sensor on the back surface, creating a three-dimensional detection architecture. This dimensional expansion allows the system to detect ambient light from multiple directions simultaneously, ensuring accurate detection regardless of whether the device is in a compact folded state or unfolded state.
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
Improves the flexibility and accuracy of ambient light detection, ensuring accurate display brightness adjustments regardless of the device's state, enhancing user experience.
Implementation Method 1
multiple light sensors facing different directions are arranged at different positions of the electronic device, such that light in different directions in an environment where the electronic device is located may be detected
Data Source
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AI summary
The present disclosure relates to a method and device for detecting ambient light, an electronic device and a storage medium. The electronic device includes: a first screen (110), the first screen (110) being a foldable flexible screen; multiple light sensors (120), orientations of light sensing surfaces (121) of the multiple light sensors (120) being different; and a processing module (130), connected with the first screen (110) and the light sensors (120) respectively and configured to select a target light sensor that is not shielded from the multiple light sensors (120) according to a present attitude of the first screen (110) and obtain target detection data representing present ambient brightness according to alternative detection data of the target light sensor.