Under-Display Camera Timing to Prevent Display Light Interference
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Solution Overview
Problem
Conventional electronic devices with under-display cameras (UDC) face issues with light interference from the display panel, degrading image quality during image capture.
Innovation Solution
The electronic device adjusts display driving information to ensure the non-light-emitting interval of the display panel's duty cycle is longer than the shutter speed, allowing image capture without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the camera is disposed under the display panel (UDC), then the display screen area is expanded and bezel is reduced, but light interference from the display panel degrades image quality
Solution Approach 1:
The display panel operates with a duty cycle that periodically switches between light-emitting and non-light-emitting states. The camera captures images during the non-light-emitting intervals when the display pixels are in the off-state, eliminating light interference. This periodic coordination between display driving and camera operation allows the UDC to function effectively beneath the display panel.
2Object-affected harmful factors
If the non-light-emitting interval is extended to prevent light interference, then image quality improves, but display visibility time is reduced
Solution Approach 1:
Instead of extending the non-light-emitting interval throughout the entire display cycle, the patent applies partial action by coordinating camera capture with specific non-light-emitting intervals within the duty cycle. The display maintains its normal light-emitting operation for most of the cycle, providing continuous visibility, while briefly pausing light emission only when the camera needs to capture images. This approach minimizes impact on display visibility while effectively preventing light interference during capture moments.
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 approach improves image quality by minimizing light interference from the display panel, enabling clear images through the UDC and utilizing the entire visible display region without perceptible differences.
Implementation Method 1
change set display driving information such that a time of a non-light-emitting interval of a duty cycle of the display circuitry is larger than the shutter speed
Data Source
AI summary
An electronic device including a camera and an operation method of the electronic device are provided. The electronic device includes display circuitry, a camera disposed on a rear surface of the display circuitry, a memory, and at least one processor electrically connected to the display circuitry, the camera, and the memory and being configured to identify camera driving information set for the camera, identify a shutter speed included in the set camera driving information, change set display driving information such that a time of a non-emission interval of the duty cycle of the display circuitry is greater than the shutter speed, and based on the changed display driving information, control a driving of the camera.