Camera Module Border Luminance Control for Display Light Leakage
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Solution Overview
Problem
Electronic devices with camera modules integrated into the display face issues with light leakage during shooting, particularly when the size of the optical hole is minimized for aesthetic reasons, leading to unwanted reflections and image quality degradation.
Innovation Solution
The implementation of a processor-controlled border region around the camera exposure area on the display, which adjusts its luminance to minimize light leakage by either deactivating or reducing the brightness of pixels in this region when the camera is activated, thereby preventing light from entering the camera's angle of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the size of the optical hole is reduced to improve aesthetics, then the appearance quality is improved, but light leakage occurs during shooting
Solution Approach 1:
The patent applies local quality by controlling the luminance of pixels in the border region surrounding the camera exposure region differently from other display regions. Specifically, pixels in the border region are set to a first luminance level (lower or zero) while pixels in other regions maintain a second luminance level, creating localized optical control to prevent light leakage into the camera without affecting the overall display appearance.
2Area of stationary object
If the optical hole size is minimized for aesthetic purposes, then the display surface uniformity is improved, but light leakage and reflections increase
Solution Approach 1:
The patent implements preliminary anti-action by proactively controlling the luminance of border region pixels before light leakage or reflections can occur. When the camera module is activated, the processor preemptively adjusts the luminance of pixels in the border region to a lower level, preventing light from entering the camera's angle of view and thus preventing light leakage and reflections before they happen.
3Measurement precision
If pixels in the border region are deactivated to prevent light leakage, then image quality is improved, but display continuity is disrupted
Solution Approach 1:
The patent applies dynamics by making the luminance control of border region pixels conditional and dynamic rather than static. The processor controls the luminance of border region pixels based on the operational state of the camera module - when the camera is activated, pixels are set to first luminance (lower or zero), and when the camera is deactivated, pixels return to second luminance (normal display level). This dynamic adjustment prevents light leakage only when necessary while maintaining display continuity at other times.
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 solution effectively reduces light leakage, enhancing image quality by controlling the luminance of the border region around the camera exposure area, thus preventing bright strips from appearing in captured images.
Implementation Method 1
a display including a camera exposure region at least partially overlapping with the lens and a border region surrounding a periphery of the camera exposure region
Data Source
AI summary
Disclosed is an electronic device including a camera module including at least one lens, a display including a camera exposure region at least partially overlapping with the lens and a border region surrounding a periphery of the camera exposure region in a direction corresponding to an optical axis of the lens, and a processor operatively connected to the camera module and the display. When a shooting-related application is executed or when the camera module is activated, the processor may control a luminance of the border region to be within a specified range. Besides, various embodiments as understood from the specification are also possible.