Polymer Compound Luminous Efficiency in Light Emitting Elements
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light emitting devices employing polymer compounds have not been adequate in terms of luminous efficiency.
Innovation Solution
A polymer compound comprising specific constitutional units, including a first constitutional unit represented by formula (1A), a second constitutional unit represented by formula (2), and a third constitutional unit represented by formula (3) or formula (4'), which are designed to enhance luminous efficiency in light emitting devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional polymer compounds are used in light emitting devices, then the devices can be manufactured with existing materials, but the luminous efficiency is inadequate
Solution Approach 1:
The patent modifies the chemical structure of polymer compounds by introducing specific constitutional units with defined molecular weights and functional groups (formulas 1, 2, 3, 4) to optimize charge transport and recombination properties, thereby improving luminous efficiency while maintaining device reliability
Solution Approach 2:
The invention creates a composite polymer structure combining multiple types of constitutional units (aromatic hydrocarbon units, heterocyclic units, charge transport units) in specific ratios to achieve synergistic effects that enhance both luminous efficiency and device performance
2Duration of action of stationary object
If polymer compounds with crosslinking groups are used to improve luminance life, then device durability is enhanced, but manufacturing complexity increases
Solution Approach 1:
The patent incorporates crosslinking functional groups (epoxy, oxetane, vinyl) directly into the polymer backbone during synthesis, so that crosslinking capability is built-in from the start rather than requiring separate post-processing steps, thus enhancing luminance life while maintaining ease of manufacture
Solution Approach 2:
The polymer compound is designed to simultaneously provide charge transport, luminescence, and crosslinking functions through integrated constitutional units, eliminating the need for separate materials and processes for each function, thereby improving luminance life without significantly increasing manufacturing complexity
Data Source
AI summary
A polymer compound comprising constitutional units of formula (1) and formula (2), and a constitutional unit of formula (3) and/or (4'). [Ar1 to Ar4 represent an arylene group or the like, Ar5 to Ar7 represent an aryl group or the like, and x and y represent 0 or 1. Ar8 represents a (2+p)-valent aromatic hydrocarbon group or the like, R1 represents an alkyl group or the like, and p represents an integer of 1 or greater. na represents an integer of 0 to 3, nb represents an integer of 0 to 12, nA represents 0 or 1, n represents an integer of 1 to 4, Ar10 represents a (2+n)-valent aromatic hydrocarbon group or the like, La and Lb represent an alkylene group or the like, LA represents an oxygen atom or the like, and Q1 represents a monovalent crosslinkable group. c represents 0 or 1, Ar20, Ar30' and Ar40 represent an arylene group or the like, Q2' to Q4' represent a monovalent crosslinkable group or the like, na and ng represent an integer of 0 to 3, nb and nh represent an integer of 0 to 12, nA and nD represent 0 or 1, La, Lb, Lg and Lh represent an alkylene group or the like, and LA and LD represent an oxygen atom or the like.]