Under-Display Camera Module Alignment for Smaller Inactive Areas

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Solution Overview

Problem

Portable electronic devices with camera modules have a large inactive area due to the camera's line of sight, reducing the proportion of the surface area available for display and affecting aesthetic appeal.

Innovation Solution

An electronic device with a camera module is designed to minimize the inactive area by using an adhesive member between the camera housing and a support member, and adjusting the camera's position through vision alignment to reduce tolerances.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a camera module is disposed in the inactive area, then the camera can capture images through the display surface, but the inactive area increases reducing the display proportion

Engineering Contradiction:
Improvecamera imaging capabilityVSAvoiddisplay area proportion
Core Design Contradiction:
Measurement precisionVSArea of stationary object

Solution Approach 1:

The camera module is positioned in the inactive area beneath the display, utilizing the vertical space and structural layers below the active display region. This allows the camera to function without occupying additional horizontal display area, effectively resolving the contradiction by moving the camera into a different spatial dimension (the inactive area beneath the display) rather than competing for active display space.

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

2Ease of manufacture

If the camera housing is directly attached to the support member, then assembly is simple, but positioning tolerance accumulates affecting alignment precision

Engineering Contradiction:
Improveassembly simplicityVSAvoidcamera positioning accuracy
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

An adhesive member is introduced as an intermediary component between the camera housing and the support member. This adhesive member serves as a mediator that not only bonds the two components together but also compensates for positioning tolerances through its adhesive properties and potential thickness variation, thereby maintaining both ease of assembly and manufacturing precision.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The adhesive member's properties (such as thickness, viscosity, and curing characteristics) are utilized to adjust and compensate for positioning tolerances. By changing the parameters of the bonding process and the adhesive material itself, the system achieves precise camera alignment while maintaining simple assembly procedures.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3997858B1Electronic device including camera module and manufacturing method thereof
Publication Date: 2025.11.12 SAMSUNG ELECTRONICS CO LTD
  • EP3997858B1 patent drawingFigure 1
  • EP3997858B1 patent drawingFigure 2~3
  • EP3997858B1 patent drawingFigure 4

AI summary

An electronic device according to certain embodiments of the disclosure includes: a front plate including a transparent area and an opaque area; a display disposed under the front plate and having a first opening corresponding to at least a part of the transparent area; a support member disposed under the display and including a first area having a second opening corresponding to at least a part of the first opening and at least one second area formed to protrude under the first area; a camera module including a camera housing that includes a first surface facing the first area and a second surface formed to extend under the first surface and facing the second area, and at least one lens that is disposed in at least one of the first opening and the second opening; and an adhesive member disposed between the camera housing and the second area.