Under-Display Camera Layout With Dynamic Light-Blocking Periphery

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Solution Overview

Problem

The arrangement of a camera below a display in electronic devices causes unwanted light reflection from the display pixels into the camera lens, affecting image quality and necessitating a solution to block this light effectively.

Innovation Solution

The periphery of the light passing area in the display is utilized as a light blocking area, with a processor controlling the display to draw a pattern in this area based on camera usage states, thereby blocking light emission from the display.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the camera is arranged below the light passing area to enable display expansion and smooth camera arrangement, then the display area is increased and camera arrangement is simplified, but light emitted from display pixels is reflected into the camera lens causing unwanted patterns and reduced image quality

Engineering Contradiction:
Improvedisplay areaVSAvoidlight reflection into camera lens
Core Design Contradiction:
Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

A light blocking area is introduced as an intermediary element between the light passing area and the camera lens. This light blocking area acts as a mediator that selectively prevents harmful light reflections from reaching the camera while allowing the display to maintain its expanded area and the camera to remain positioned below the display.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The area around the light passing area is segmented into a dedicated light blocking area. This segmentation separates the functional zones: the light passing area for light transmission, the light blocking area for preventing reflections, and the camera position for image capture. This segmentation allows each zone to perform its specific function without interfering with others.

Inventive Principle:
Principle #1Segmentation

2Object-affected harmful factors

If the periphery of the light passing area is used solely for blocking light, then image quality is improved, but the versatility of the periphery area is reduced

Engineering Contradiction:
Improvelight blocking effectivenessVSAvoidusage purposes of periphery area
Core Design Contradiction:
Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The light blocking area is designed to be dynamically controllable rather than statically fixed. The processor can adjust the light blocking function based on operational conditions, such as activating or deactivating the light blocking pattern depending on whether the camera is in use, thereby providing both light blocking capability and display versatility.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The periphery area is designed to serve multiple functions: it can act as a light blocking area when needed to prevent reflections, and simultaneously serve as a display area for notifications, status indicators, or other visual information. This multi-functionality resolves the contradiction between light blocking effectiveness and usage versatility.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 approach improves image quality by blocking light from the display from entering the camera lens, while also allowing the periphery to serve additional purposes such as notification or optical effects.

Implementation Method 1

block light emitted from a display from flowing into the lens of a camera arranged below the display

Methodology Applied
Scientific EffectLight blocking: Absorption (EM radiation)

Data Source

PatentUS12556828B2Electronic device having structure in which camera is disposed under display
Publication Date: 2026.02.17 SAMSUNG ELECTRONICS CO LTD
  • US12556828B2 patent drawing
  • US12556828B2 patent drawing
  • US12556828B2 patent drawing

AI summary

According to various embodiments of the present disclosure, an electronic device comprises: a display including a light transmitting area and a drawing area surrounding the light transmitting area; a first camera disposed below the light transmitting area when looking at the light transmitting area from above the display; a processor operatively coupled to the display and the first camera; and a memory operatively coupled to the processor. The processor may be configured to store an application in the memory and draw a pattern on the drawing area on the basis of an execution state of the application. Various other embodiments are also possible.