Rotating Support Plates for Foldable Display Evenness

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Solution Overview

Problem

Foldable electronic devices face issues with uneven display panel surfaces during folding, affecting user experience due to the fixed length of the display panel and resulting in either heaping or gaps between the panel and support plates.

Innovation Solution

The design incorporates a housing with recessed clearances and rotatable support plates that adjust to accommodate the display panel in both folded and unfolded positions, ensuring evenness by allowing the panel to bend into the clearance and maintaining contact with the support plates without gaps.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the display panel is folded, then the device becomes compact and portable, but the display panel surface becomes uneven and may pile up

Engineering Contradiction:
Improvedevice compactnessVSAvoiddisplay panel surface evenness
Core Design Contradiction:
Volume of moving objectVSShape

Solution Approach 1:

The support structure is divided into multiple support plates (first support plate, second support plate, third support plate) that can independently move and adjust. Each support plate is separated and can rotate around fixation points, allowing localized adaptation to the folded display panel shape while maintaining overall structural integrity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support plates are designed to be rotatable around fixation points rather than fixed rigidly. This dynamic capability allows the support plates to adjust their positions and angles according to the folding state of the display panel, maintaining surface evenness during both folded and unfolded states.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the support plates are fixed rigidly, then the display panel is well-supported when unfolded, but gaps appear between the panel and support plates during folding

Engineering Contradiction:
Improvedisplay panel support stabilityVSAvoidcontact between panel and support plates
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The support plates are designed to be rotatable around fixation points rather than fixed rigidly. This dynamic capability allows the support plates to adjust their positions and angles according to the folding state of the display panel, maintaining surface evenness during both folded and unfolded states.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The positions and orientations of the support plates are dynamically changed during folding operations. The support plates rotate around fixation points to alter their spatial parameters, adapting to different display panel configurations and maintaining optimal support contact throughout the folding cycle.

Inventive Principle:
Principle #35Parameter changes

3Length of stationary object

If the display panel length is extended to cover the full housing, then the display area is maximized, but the panel cannot be evenly supported during folding

Engineering Contradiction:
Improvedisplay panel lengthVSAvoiddisplay panel surface evenness
Core Design Contradiction:
Length of stationary objectVSShape

Solution Approach 1:

The support structure is divided into multiple support plates (first support plate, second support plate, third support plate) that can independently move and adjust. Each support plate is separated and can rotate around fixation points, allowing localized adaptation to the folded display panel shape while maintaining overall structural integrity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support plates are arranged in multiple dimensions and positions beneath the display panel, with the first support plate having a first end and second end at different locations. This multi-dimensional arrangement allows the support structure to adapt to the three-dimensional deformation of the folded display panel while maintaining full-length support.

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

Data Source

PatentUS12066857B2Electronic devices
Publication Date: 2024.08.20 BEIJING BOE OPTOELECTRONCIS TECH CO LTD
  • US12066857B2 patent drawing
  • US12066857B2 patent drawing
  • US12066857B2 patent drawing

AI summary

The present application discloses an electronic device including a housing, support plates and a display panel. The housing is recessed inward to form one or more clearances penetrating the housing along a first direction. A number of the support plates is at least two, and one clearance is correspondingly arranged below adjoining parts of two adjacent support plates. The support plates are configured to support the display panel. The display panel is switchable between a folded position and an unfolded position. When the display panel is in the unfolded position, first surfaces of the support plates that abut against the display panel are flush. When the display panel is in the folded position, any two oppositely folded and adjacent support plates are separated by a part of the display panel that covers the any two oppositely folded and adjacent support plates when the display panel is in the unfolded position, and a part of the any two oppositely folded and adjacent support plates and a part of the display panel that covers the part of the any two oppositely folded and adjacent support plates when the display panel is in the unfolded position enter the clearance.