Under-Display Camera Support Structure for Small Aperture Screens
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Solution Overview
Problem
Existing electronic devices face challenges in increasing the display ratio while reducing the viewing aperture on the display screen, leading to degraded camera resolving power and potential cracking of the display screen.
Innovation Solution
The electronic device incorporates a camera positioned between a housing and a mainboard support, with a distance of 0.15 mm to 0.4 mm from the display screen, and uses buffer members to enhance the camera's ability to withstand external forces, reducing the light-transmitting hole and increasing the display ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the viewing aperture on the display screen is reduced to increase display ratio, then the display ratio is improved, but the resolving power of the camera when stressed is degraded and the display screen may crack
Solution Approach 1:
The patent transitions from a two-dimensional planar mounting approach to a three-dimensional spatial arrangement by positioning the camera between the housing and mainboard support, utilizing the Z-axis dimension. This allows the camera to be mounted at an optimized distance (0.15mm to 0.4mm) from the display screen, improving stress resistance while maintaining a reduced viewing aperture for high display ratio.
2Area of stationary object
If the camera is positioned closer to the display screen to reduce the light-transmitting hole size, then the display ratio is increased, but the camera's ability to withstand external forces is reduced
Solution Approach 1:
The patent optimizes the distance parameter between the camera and display screen within a specific range (0.15mm to 0.4mm). This parameter optimization allows the light-transmitting hole to be minimized for high display ratio while maintaining sufficient camera resilience to external forces, resolving the contradiction between hole size and strength.
3Device complexity
If the camera is mounted on the housing only, then the structure is simple, but the camera cannot effectively withstand external forces when stressed
Solution Approach 1:
The patent divides the camera mounting function into two separate mounting portions: one on the housing and another on the mainboard support. This segmentation allows the camera to be supported at two different locations, enhancing its ability to withstand external forces while maintaining a relatively simple overall structure.
Solution Approach 2:
The camera is nested between the housing and mainboard support, utilizing the space between these two components. This nested arrangement allows dual mounting without significantly increasing device thickness or complexity, while providing enhanced stress resistance through distributed support.
Data Source
AI summary
An electronic device, including a housing, a display screen, a mainboard support, and a camera. A first mounting portion is arranged on the housing. The display screen is mounted on the housing, a mounting cavity is formed between the display screen and the housing, and the display screen has a light-transmitting hole. The mainboard support is mounted on the housing, located inside the mounting cavity, and arranged spaced apart from the display screen. A second mounting portion is arranged on the mainboard support. The camera is located inside the mounting cavity, is arranged facing the light-transmitting hole, and matches the first mounting portion and the second mounting portion respectively, to be positioned between the housing and the mainboard support. A minimum distance n between the camera and the display screen satisfies: 0.15 mm≤n<0.4 mm.