Display Lamination Press with Multi-Point Force Balancing

Solution Overview

Problem

Existing display device manufacturing methods face challenges in uniformly attaching members due to non-uniform pressure application, which can lead to damage or improper attachment.

Innovation Solution

A manufacturing apparatus and method utilizing a pressurization portion with multiple force application units and detection units to adjust forces uniformly across the surface of the members, ensuring even attachment by measuring and adjusting forces at multiple points.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a single pressurization method is used to attach members, then the attachment process is simple, but the pressure is not applied uniformly causing damage or improper attachment

Engineering Contradiction:

Improveuniformity of pressure applicationVSAvoidstructure of pressurization portion

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The pressurization portion is divided into multiple independent force application units (first, second, third, and fourth units) that can apply pressure to different regions of the members separately. Each unit includes its own actuator and contact surface, allowing independent control of pressure in different zones to achieve uniform pressure distribution across the entire attachment area.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the members receive customized pressure application through dedicated force application units. The first and second units press on first members while the third and fourth units press on second members, with each unit's contact surface and force magnitude optimized for its specific region, ensuring locally appropriate pressure for uniform overall attachment.

Inventive Principle:

Principle #3Local quality

2Reliability

If multiple force application units are used to apply uniform pressure, then uniform attachment is achieved, but the device complexity increases

Engineering Contradiction:

Improveattachment qualityVSAvoidnumber of force application units

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The pressurization portion is divided into multiple independent force application units (first, second, third, and fourth units) that can apply pressure to different regions of the members separately. Each unit includes its own actuator and contact surface, allowing independent control of pressure in different zones to achieve uniform pressure distribution across the entire attachment area.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple force application units share common structural elements and control mechanisms. The units are arranged in a coordinated manner where they work together as an integrated system, with similar structural designs and coordinated control that reduces overall system complexity despite having multiple independent pressure application points.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Manufacturing precision

If force application units are spaced apart, then uniform pressure distribution is achieved, but the contact coverage area is reduced

Engineering Contradiction:

Improveuniformity of force distributionVSAvoidcontact area coverage

Core Design Contradiction:

Manufacturing precisionVSArea of stationary object

Solution Approach 1:

The pressurization portion is divided into multiple independent force application units (first, second, third, and fourth units) that can apply pressure to different regions of the members separately. Each unit includes its own actuator and contact surface, allowing independent control of pressure in different zones to achieve uniform pressure distribution across the entire attachment area.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The multiple force application units work together as an integrated pressurization system, with their individual contact areas combining to provide comprehensive coverage. The units are positioned and coordinated so that their combined effect covers the entire attachment area while maintaining uniform pressure distribution through their distributed arrangement.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12412496B2Apparatus and method of manufacturing a display device

Publication Date: 2025.09.09 SAMSUNG DISPLAY CO LTD

AI summary

An apparatus for manufacturing a display device includes a stage to support first and second members, and a pressurization portion spaced apart from the stage and to press the first or second member. The pressurization portion includes: a contact portion facing the stage and to contact the first or second member; a first force application unit connected to the contact portion and to linearly move the contact portion; and a second force application unit connected to the contact portion and spaced apart from the first force application unit. The second force application unit linearly moves the contact portion in a portion of the contact portion that is different from the portion contacted by the first force application unit. At least one of the first and second force application units is configured to operate according to a force applied by the contact portion to one of the first and second members.