Foldable Display Light Source Layout for Portable Camera Viewing

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Solution Overview

Problem

Existing display devices face a challenge in balancing the enlargement of display regions for improved browsability with maintaining portability, particularly in portable electronic devices, and require efficient light sources for photography and video shooting with low power consumption.

Innovation Solution

A flexible display device with a first region for emitting light and a second region for displaying images, both integrated into a housing with a concave portion, allowing the display to be bent and folded, and utilizing passive and active matrix driving for power efficiency and high luminance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the display region is enlarged to improve browsability, then the display area increases, but the portability of the device is reduced

Engineering Contradiction:
Improvedisplay region areaVSAvoidportability
Core Design Contradiction:
Area of stationary objectVSAdaptability or versatility

Solution Approach 1:

The display device employs a flexible display panel that can dynamically change its configuration between flat and folded states. This dynamic adaptability allows the display to provide a large viewing area when needed while maintaining compact portability when stored or carried, effectively resolving the contradiction between display size and portability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention utilizes a flexible display panel with a flexible substrate that enables the display to be bent or folded without damage. This flexible film technology allows the display to achieve both large display area and compact form factor, simultaneously improving browsability and portability.

Inventive Principle:
Principle #30Flexible shells and thin films

2Illumination intensity

If a flexible display with light-emitting region is used for photography, then the light source provides high luminance, but the power consumption increases

Engineering Contradiction:
Improvelight luminanceVSAvoidpower consumption
Core Design Contradiction:
Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The light-emitting display panel operates in periodic cycles, activating the light-emitting region only when photography or video recording is required. During normal display operation, the light-emitting function remains inactive. This periodic activation significantly reduces overall power consumption while maintaining high luminance when the light source is actually needed for capturing photos or videos.

Inventive Principle:
Principle #19Periodic action

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

The solution provides a highly browsable and portable electronic device with a novel light source for photography and video, reducing power consumption and maintaining image quality while enhancing portability and display flexibility.

Implementation Method 1

The light-emitting element includes a lower electrode, an EL layer, and an upper electrode

Methodology Applied
Scientific EffectLight emission: Light Emitting Diode

Implementation Method 2

The display portion can be bent so that the first region and the second region face in different directions

Methodology Applied
Scientific EffectFlexibility: Elasticity

Data Source

PatentUS12535719B2Electronic device with foldable display
Publication Date: 2026.01.27 SEMICON ENERGY LAB CO LTD
  • US12535719B2 patent drawing
  • US12535719B2 patent drawing
  • US12535719B2 patent drawing

AI summary

Provided is an electronic device with high portability, a highly browsable electronic device, or an electronic device having a novel light source that can be used in shooting photographs and video. The electronic device includes a camera and a flexible display portion. The display portion has a first region and a second region. The first region has a function of emitting light to a photographic subject. The second region has a function of displaying an image of the photographic subject shot by the camera. The display portion can be bent so that the first region and the second region face in different directions.