Rotating Camera Behind Display for Full-Screen Mobile Terminals
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Solution Overview
Problem
The challenge of implementing a full-screen display in mobile terminals is hindered by the limited screen size due to the presence of front cameras, which restricts the design and requires innovative solutions to optimize image capturing and display quality.
Innovation Solution
A display device with a dual-image capturing system is proposed, featuring a first display area with high pixel density and a second display area with lower pixel density, where the second display area includes a rotating image capturing assembly to adjust its orientation based on the distance to the object, thereby improving image quality and reducing disparities between captured images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a front camera is added to a mobile terminal, then image capturing function is improved, but screen size is reduced due to the need for a notch or punch hole
Solution Approach 1:
The display area and image capturing area are merged into a single full-screen region. The second display area serves dual purposes: displaying images and allowing light transmission for image capture by the second image capturing assembly positioned behind it, eliminating the need for separate camera openings.
Solution Approach 2:
The image capturing assembly is moved from the front surface to the rear side of the display panel, utilizing the z-dimension (depth) rather than consuming front screen real estate. This allows the front camera to be positioned without creating notches or punch holes in the display area.
2Area of stationary object
If low-resolution pixels are used in the image capturing area, then screen space is saved, but image quality is reduced
Solution Approach 1:
The display area is segmented into a first display area with high pixel density for main display content and a second display area with lower pixel density for image capturing. This segmentation allows each region to be optimized for its specific function while maintaining overall image quality through subsequent processing.
Solution Approach 2:
The pixel density parameter is varied across different regions of the display area. The second display area uses lower pixel density to maximize light transmission for image capture, while the first display area maintains high pixel density for display quality. Image processing techniques are then applied to enhance the captured image quality.
3Device complexity
If a single image capturing assembly is used, then device complexity is reduced, but image quality in close-up scenarios is insufficient due to limited light data collection
Solution Approach 1:
Two image capturing assemblies are combined in the system: the first image capturing assembly for general imaging and the second image capturing assembly positioned behind the display area for enhanced light collection. This combination improves image quality in close-up scenarios without significantly increasing overall system complexity.
Solution Approach 2:
The second image capturing assembly serves multiple functions: capturing images through the display area, providing additional light data for image enhancement, and enabling image capture in close-up scenarios where a single camera would be insufficient.
4Device complexity
If the second image capturing assembly is fixed, then device complexity is reduced, but image disparities occur when object distance changes
Solution Approach 1:
The second image capturing assembly is made rotatable rather than fixed, allowing it to dynamically adjust its orientation based on object distance. This dynamic adjustment compensates for perspective differences and reduces image disparities between the first and second capturing assemblies, particularly in close-up scenarios.
Data Source
AI summary
An embodiment discloses a display device including a display panel including a first display area and a second display area, a first image capturing assembly and a second image capturing assembly disposed below the second display area, and a rotating assembly configured to rotate the second image capturing assembly.