Pyridine-Modified Polyimide Thin Film for Flexible OLED Substrates

Solution Overview

Problem

Current polymer thin film materials used as substrates for flexible OLED display panels struggle to simultaneously meet requirements for heat resistance, mechanical properties, and optical properties.

Innovation Solution

A manufacturing method producing a polyimide thin film material with a pyridine ring main chain structure, involving a series of reactions in multiple containers with specific reactants and solvents, culminating in the formation of polymers F or H, which are then coated onto a substrate to enhance heat resistance, mechanical properties, and optical properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If current polymer thin film materials are used as substrate material for flexible OLED display panels, then the manufacturing process is simple, but the heat resistance, mechanical properties, and optical properties cannot be met simultaneously

Engineering Contradiction:

Improvemanufacturing process simplicityVSAvoidheat resistance

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent employs composite materials by incorporating pyridine ring structures into the polyimide main chain, combining the thermal stability of polyimide with the enhanced mechanical and optical properties of pyridine-containing polymers. This composite approach allows simultaneous achievement of heat resistance, flexibility, and optical transparency required for flexible OLED substrates

Inventive Principle:

Principle #40Composite materials

2Ease of manufacture

If current polymer thin film materials are used as substrate material for flexible OLED display panels, then the manufacturing process is simple, but the mechanical properties are insufficient

Engineering Contradiction:

Improvemanufacturing process simplicityVSAvoidmechanical properties

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The patent employs composite materials by incorporating pyridine ring structures into the polyimide main chain, combining the thermal stability of polyimide with the enhanced mechanical and optical properties of pyridine-containing polymers. This composite approach allows simultaneous achievement of heat resistance, flexibility, and optical transparency required for flexible OLED substrates

Inventive Principle:

Principle #40Composite materials

3Ease of manufacture

If current polymer thin film materials are used as substrate material for flexible OLED display panels, then the manufacturing process is simple, but the optical properties are insufficient

Engineering Contradiction:

Improvemanufacturing process simplicityVSAvoidoptical properties

Core Design Contradiction:

Ease of manufactureVSIllumination intensity

Solution Approach 1:

The patent employs composite materials by incorporating pyridine ring structures into the polyimide main chain, combining the thermal stability of polyimide with the enhanced mechanical and optical properties of pyridine-containing polymers. This composite approach allows simultaneous achievement of heat resistance, flexibility, and optical transparency required for flexible OLED substrates

Inventive Principle:

Principle #40Composite materials

4Temperature

If a multi-step chemical reaction process is used to synthesize the polymer, then the heat resistance is improved, but the manufacturing complexity increases

Engineering Contradiction:

Improveheat resistanceVSAvoidmanufacturing process complexity

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-synthesizing the pyridine-containing monomer (compound C) with specific functional groups before polymerization. This pre-functionalization allows the subsequent polymerization step to directly produce the high-performance polyimide polymer with desired heat resistance properties, organizing the complex synthesis into manageable sequential stages

Inventive Principle:

Principle #10Preliminary action

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 method effectively improves the heat resistance, mechanical properties, and optical properties of the polyimide thin film material, making it suitable for flexible OLED display panels.

Implementation Method 1

a solution including the polymer F or a solution including the polymer H forming the polymer F or the polymer H on a substrate

Methodology Applied

Scientific EffectEvaporation: Evaporation

Data Source

PatentUS12122888B2Thin film material and manufacturing method of thin film material

Publication Date: 2024.10.22 WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD

AI summary

The present disclosure provides a thin film material and a manufacturing method thereof. The manufacturing method of the thin film material comprises: a compound A and a first reactant reacting to form a compound B; the compound B and a second reactant reacting to form a compound C; the compound C and a third reactant reacting to form a polymer D; the polymer D reacting to obtain a mixture including a polymer F or a polymer H; and a solution including the polymer F or the polymer H forming the polymer F or the polymer H on a substrate.