Foldable Display Device with Rotating Front Component

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Solution Overview

Problem

The challenge is to increase the display area of foldable display panels without affecting the functionality of front components like cameras, while reducing production costs and improving resource utilization, especially in devices that require a large screen for applications like video playback and mobile games.

Innovation Solution

A foldable display device design where the display panel is divided into two areas along a folding axis, with a non-overlapping portion that allows the front component to be positioned on the housing, enabling it to move between a forward and rearward state depending on the panel's fold state, thus eliminating the need for a border frame and optimizing display area usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If the border frame is removed or narrowed to increase display area, then the display available area is increased, but the front component cannot be properly positioned or function

Engineering Contradiction:
Improvedisplay available areaVSAvoidfunctional service of front component
Core Design Contradiction:
Area of moving objectVSReliability

Solution Approach 1:

The front component is designed to dynamically change its position and orientation based on the folding state of the display panel. When the display panel is folded, the front component rotates to face forward; when unfolded, it rotates to face backward. This dynamic adjustment allows the same component to serve different functions in different states, resolving the contradiction between maximizing display area and maintaining front component functionality.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The front component is designed with multi-functionality to serve different purposes depending on the display panel's state. In the folded state, it functions as a front-facing camera or sensor; in the unfolded state, it can function as a rear camera or serve other purposes. This universal design allows a single component to replace what would traditionally require separate front and rear components, increasing display area while maintaining all necessary functions.

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

2Stability of the object's composition

If the front component is fixed on the display panel, then it maintains stable position, but it blocks the display area when the panel is unfolded

Engineering Contradiction:
Improveposition stability of front componentVSAvoiddisplay available area
Core Design Contradiction:
Stability of the object's compositionVSArea of moving object

Solution Approach 1:

The front component is mounted on a rotatable mechanism that allows it to dynamically change its position between facing forward and facing backward based on the folding state. This dynamic positioning ensures the component maintains stable functionality in each state while not permanently blocking the display area when unfolded, as it can be rotated away from the display surface.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The front component is positioned in a way that utilizes the third dimension (depth/thickness) of the device structure. By mounting it on a rotatable mechanism that extends beyond the flat display surface, the component can occupy space in the depth dimension when needed, rather than permanently occupying two-dimensional display area. This allows the display panel to achieve full screen coverage while the front component maintains its functionality through spatial utilization in multiple dimensions.

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

Data Source

PatentUS11317021B2Display device and control circuit thereof
Publication Date: 2022.04.26 BOE TECHNOLOGY GROUP CO LTD
  • US11317021B2 patent drawing
  • US11317021B2 patent drawing
  • US11317021B2 patent drawing

AI summary

A display device and a control circuit thereof are provided. The display device includes: a display panel that is foldable and a housing that is foldable and used for supporting the display panel. The display panel has a folding axis and is divided into a first display area and a second display area along the folding axis; the first display area and the second display area partially overlap in a case where the display panel is in a folded state along the folding axis, and the second display area comprises a non-overlapping portion that does not overlap the first display area; and a component is provided at a position of the housing supporting the non-overlapping portion.