Flexible Display Substrate Deformable Driver

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Solution Overview

Problem

Current deformable drive technologies for flexible display screens lack the necessary freedom and precision in deformation, particularly in thin and light mobile phone designs, with mechanical drives being bulky and user manual drives offering limited control.

Innovation Solution

A flexible display screen with a deformable driver featuring an array of deformable units, each comprising multiple branches arranged in a cross shape, driven by piezoelectric materials that deform in response to applied voltage, allowing for precise control over the display panel's shape and degree of freedom.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If mechanical drive is used for flexible display screen deformation, then the display can be deformed, but the drive occupies larger volume and has very little freedom of deformation

Engineering Contradiction:

Improvedeformation freedomVSAvoiddrive volume

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The deformable driver is segmented into multiple independent deformable units arranged in an array, where each unit can be independently controlled to deform in different directions and degrees. This segmentation enables multi-degree-of-freedom deformation while keeping each individual unit compact, resolving the contradiction between deformation freedom and drive volume.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent replaces traditional mechanical drive mechanisms with an electrodeformation-based system using piezoelectric materials. This substitution eliminates bulky mechanical components while enabling precise, multi-directional deformation control through electrical signals, directly addressing both the volume and deformation freedom requirements.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If user manual drive is used for flexible display screen deformation, then the display can be deformed, but the deformation control precision is poor and freedom is limited

Engineering Contradiction:

Improvedeformation control precisionVSAvoidoperation complexity

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

Manual mechanical manipulation is replaced with an automated electrodeformation system. Piezoelectric materials respond precisely to applied voltages, enabling accurate control of deformation magnitude and direction. The system can be programmed to achieve specific deformation states without manual intervention, improving precision while simplifying operation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system controls deformation by changing electrical parameters (voltage magnitude, polarity, and timing) applied to the piezoelectric materials. By adjusting these parameters, precise control over the degree and direction of deformation is achieved, replacing imprecise manual control with programmable electrical control.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If traditional rigid display device is used, then the display structure is stable, but the device lacks impact resistance and portability

Engineering Contradiction:

Improveimpact resistanceVSAvoidstructural stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent employs a flexible display panel with a thin-film structure that can bend and deform without breaking. This flexible construction inherently provides impact resistance by absorbing mechanical shocks through deformation, while maintaining structural integrity. The flexibility itself becomes the mechanism for both protection and functionality.

Inventive Principle:

Principle #30Flexible shells and thin films

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

Enables precise and multi-form deformation of the flexible display screen without mechanical control, facilitating slim design, remote control, and easy programming, while maintaining impact resistance and portability advantages.

Implementation Method 1

the branch of the deformable unit comprises a piezoelectric material layer

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Data Source

PatentUS11362288B2Flexible display substrate and its deformably driving method, a display device

Publication Date: 2022.06.14 BOE TECHNOLOGY GROUP CO LTD

AI summary

The disclosure relates to the technical field of display, and provides a flexible display screen, a method for deformably driving the same, and a display device. The flexible display screen includes a flexible display panel and a deformable driver disposed on a back surface of the flexible display panel. The deformable driver drives the flexible display panel to deform based on the electrodeformation. The deformable driver includes a plurality of deformable units arranged in an array. The flexible display screen can achieve deformation with a variety of degrees of freedom, and can precisely control the deformation, thereby easy to achieve ultra-thin screen design.