Mounted Substrate Heat Supply Pattern for Anisotropic Conductive Film

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Solution Overview

Problem

Conventional driver mounting methods for display devices risk connection defects due to premature application of pressure on conductive particles before the binder in anisotropic conductive materials hardens, and rapid heating can lead to overheating and performance degradation of peripheral components.

Innovation Solution

A mounting substrate with a heat supply pattern made of a heat conductive material, allowing for independent heat supply to the anisotropic conductive material before pressure is applied, ensuring the binder hardens before pressure is exerted, and preventing overheating of adjacent components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If heat is supplied rapidly to harden the binder of the anisotropic conductive material, then the binding strength is improved, but peripheral members such as polarizing plates may overheat and suffer performance degradation

Engineering Contradiction:

Improvebinding strengthVSAvoidheat damage to peripheral members

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by providing a heat supply pattern that is localized to the component mounting section where the anisotropic conductive material is positioned. This allows heat to be concentrated precisely where needed to harden the binder, while peripheral areas such as polarizing plates remain unaffected by excessive heat, thus resolving the contradiction between achieving sufficient binding strength and preventing heat damage to surrounding components.

Inventive Principle:

Principle #3Local quality

2Productivity

If pressure is applied to the driver before the binder hardens, then mounting speed is improved, but connection defects occur due to misalignment of conductive particles

Engineering Contradiction:

Improvemounting speedVSAvoidconnection quality

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements preliminary action by supplying heat to the anisotropic conductive material before applying pressure during the mounting process. This ensures that the binder hardens in advance, providing a stable foundation that prevents conductive particles from misaligning when pressure is applied. The sequence of operations is rearranged so that heat treatment precedes pressurization, thereby maintaining both mounting efficiency and connection reliability.

Inventive Principle:

Principle #10Preliminary action

3Device complexity

If heat and pressure are applied simultaneously during driver mounting, then the mounting process is simplified, but conductive particles may be damaged before the binder hardens

Engineering Contradiction:

Improvemounting process complexityVSAvoidconductive particle integrity

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent applies segmentation by dividing the mounting process into distinct sequential stages: first heat supply to harden the binder, then pressure application to secure the driver. This separation of operations allows each parameter (heat and pressure) to be independently controlled and optimized, ensuring that conductive particles are not damaged before the binder sets, while maintaining overall process efficiency without excessive complexity.

Inventive Principle:

Principle #1Segmentation

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

This configuration improves the connection state between components and the mounting area, preventing connection defects and reducing the risk of performance degradation caused by heat, while maintaining optimal component performance.

Implementation Method 1

a heat supply pattern made of a heat conductive material and provided on the substrate in at least the component mounting section of the substrate, the heat supply pattern supplying heat to the anisotropic conductive material

Methodology Applied

Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 2

the anisotropic conductive material including at least a binder made of a thermosetting resin and conductive particles contained in the binder

Methodology Applied

Scientific EffectThermosetting: Phase Change

Data Source

PatentUS10136570B2Mounted substrate, mounted-substrate production method, and mounted-substrate production device

Publication Date: 2018.11.20 SHARP KK

AI summary

An array substrate includes a driver, a glass substrate having a driver mounting section where the driver is mounted, an anisotropic conductive material that is interposed between the driver and driver mounting section so as to electrically connect both and that at least includes a binder made of a thermosetting resin and conductive particles in the binder, and a heat supply part provided on at least the driver mounting section of the glass substrate for supplying heat to the anisotropic conductive material.