Shape-Copying Attachment Fixture for Bubble-Free Curved Displays

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Solution Overview

Problem

Existing attachment methods for flexible display panels to curved-surface cover plates are prone to damage the panel due to excessive force, result in poor attachment effects, and often have residual bubbles at arc-like and planar regions.

Innovation Solution

An attachment slider with a rigid shape-copying plate and support plate, featuring an elastic buffer layer, is used to align and attach the flexible display panel to the curved-surface cover plate, enhancing rigidity and stability through a driving mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a large force is applied to attach the flexible display panel to the curved-surface cover plate, then the attachment strength is improved, but the display panel is easily broken

Engineering Contradiction:

Improveattachment strengthVSAvoidpanel damage

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

An elastic buffer layer is provided on the shape-copying curved surface of the attachment slider to cushion the attachment process. This elastic layer absorbs excess force during attachment, preventing damage to the flexible display panel while maintaining sufficient attachment strength. The buffer layer compresses during attachment and then rebounds to maintain consistent contact pressure.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Device complexity

If conventional attachment methods are used, then the attachment process is simple, but the attachment effect is poor with residual bubbles at arc-like and planar regions

Engineering Contradiction:

Improveattachment process simplicityVSAvoidattachment quality

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The attachment slider includes a shape-copying plate with a shape-copying curved surface that precisely copies the curvature of the curved-surface cover plate. This shape copying ensures uniform contact between the flexible display panel and the cover plate surface, eliminating air pockets and bubbles that would otherwise form in arc-like and planar regions during attachment.

Inventive Principle:

Principle #26Copying

3Ease of manufacture

If the attachment slider lacks sufficient rigidity, then the device is easier to manufacture and operate, but the attachment precision and stability deteriorate

Engineering Contradiction:

Improvedevice manufacturabilityVSAvoidattachment precision

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The attachment slider employs a composite structure combining a rigid shape-copying plate with an elastic buffer layer. The rigid plate provides the necessary structural stability and shape precision, while the elastic buffer layer provides compliance for bubble-free attachment. This composite design achieves both manufacturing precision and ease of manufacture.

Inventive Principle:

Principle #40Composite materials

4Stability of the object's composition

If the attachment slider is made fully rigid, then the structural stability is improved, but the flexible display panel is easily damaged due to excessive force

Engineering Contradiction:

Improvestructural stabilityVSAvoidpanel damage

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The attachment slider applies local quality differentiation by making the main body (shape-copying plate) rigid for structural stability, while the contact surface (buffer layer) is elastic to protect the panel. This localized variation in material properties allows the slider to maintain overall rigidity while having a compliant interface with the flexible display panel.

Inventive Principle:

Principle #3Local quality

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 prevents damage to the flexible display panel by providing rigidity and stability during attachment, reduces bubble formation, and ensures proper alignment and adhesion.

Implementation Method 1

an elastic buffer layer being provided on the shape-copying curved surface

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS12505763B2Attachment fixture, attachment device and attachment method

Publication Date: 2025.12.23 BEIJING BOE TECH DEV CO LTD

AI summary

The present disclosure provides an attachment fixture, an attachment device and an attachment method. An attachment slider for attaching a flexible display panel to a curved-surface cover plate includes: at least one rigid shape-copying plate, at least a portion of an outer surface of the shape-copying plate being a shape-copying curved surface through which the flexible display panel copies a shape of the curved-surface cover plate, an elastic buffer layer being provided on the shape-copying curved surface; and at least one rigid support plate attached to the shape-copying plate, the support plate being angled relative to the shape-copying plate by an angle.