Under-Screen Camera Light Through Hole Design

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Solution Overview

Problem

Current electronic devices with front camera modules face challenges in achieving a full screen design while ensuring the camera function is not compromised, as traditional camera modules occupy significant screen space and are prone to damage from frequent extension and retraction.

Innovation Solution

The implementation of an under-screen camera module with a light through hole in the display screen, allowing the camera module to receive sufficient light while being integrated beneath the screen, thus reducing the overall height and preserving the full-screen design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a front camera module is provided on the same side of the display screen, then the camera function is ensured, but the screen-to-body ratio is reduced due to occupied screen space

Engineering Contradiction:
Improvecamera functionVSAvoidscreen-to-body ratio
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The camera module is relocated from the traditional front-side position to an under-screen position, utilizing the space dimension below the display. This dimensional transition allows the camera to function without occupying screen real estate, thereby maintaining a high screen-to-body ratio while ensuring camera functionality through the light-through hole in the display.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Area of stationary object

If a telescopic camera module is used to hide the camera, then the screen-to-body ratio is improved, but the camera module is prone to damage from frequent extension and retraction

Engineering Contradiction:
Improvescreen-to-body ratioVSAvoidcamera module durability
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The camera module is pre-positioned in a fixed under-screen location rather than requiring repeated extension and retraction movements. This eliminates the mechanical wear and damage risks associated with telescopic mechanisms while maintaining the aesthetic full-screen appearance, as the camera operates from a stationary position beneath the display.

Inventive Principle:
Principle #10Preliminary action

3Area of stationary object

If the camera module is placed under the display screen, then the screen-to-body ratio is improved, but sufficient light collection may be compromised

Engineering Contradiction:
Improvescreen-to-body ratioVSAvoidlight collection
Core Design Contradiction:
Area of stationary objectVSIllumination intensity

Solution Approach 1:

The display screen is segmented with a light-through hole at the position corresponding to the under-screen camera module. This segmentation allows light to pass through the display structure to reach the camera sensor, ensuring sufficient light collection for imaging while maintaining the overall full-screen design and high screen-to-body ratio.

Inventive Principle:
Principle #1Segmentation

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 enables the camera module to collect sufficient light, improves the screen-to-body ratio, and reduces the risk of damage associated with traditional camera module mechanisms, while maintaining a sleek, full-screen appearance.

Implementation Method 1

a light through hole penetrates through at least a part of the display screen in a height direction, so that light outside the display screen is received by the camera module below the display screen via the light through hole

Methodology Applied
Scientific EffectLight transmission: Light

Data Source

PatentEP3952259B1Terminal device, and display screen and application thereof
Publication Date: 2025.04.30 NINGBO SUNNY OPOTECH CO LTD
  • EP3952259B1 patent drawingFigure 1A
  • EP3952259B1 patent drawingFigure 1B~2
  • EP3952259B1 patent drawingFigure 3A~3B

AI summary

The present invention provides a terminal device, and a display screen thereof and an application thereof. The terminal device includes a terminal device body, a display screen, and a camera module. The display screen is provided with a light through hole. The camera module is located below the display screen, and has a front end. The front end of the camera module is fixedly attached to the display screen and the camera module is aligned with the light through hole of the display screen, so that light outside the display screen is received by the camera module via the light through hole.