Photocuring Composition for PDP Black Electrodes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing plasma display panels (PDPs) face challenges in achieving both sufficient blackness and conductivity in black electrodes, as these characteristics tend to conflict with each other, making it difficult to attain both at the same time.
Innovation Solution
A photocuring composition is developed, comprising first black particles with higher volume resistivity and second black particles with lower volume resistivity and larger average diameter, along with an organic binder, photopolymerizable monomer, and photopolymerization initiator, which are used to form a calcined black pattern structure that provides ample conductivity and insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thin film is used for the black electrode, then conductivity is improved, but blackness deteriorates
Solution Approach 1:
The patent applies local quality by using two types of black particles with different properties: first black particles (higher volume resistivity, smaller diameter) for insulation and blackness, and second black particles (lower volume resistivity, larger diameter) for conductivity. This allows different regions of the black electrode to have different functional characteristics, achieving both sufficient blackness and conductivity simultaneously
Solution Approach 2:
The patent uses composite materials by combining two types of black particles with distinct properties in a single photocuring composition. The first black particles provide insulative properties and blackness, while the second black particles provide conductive properties. This composite approach allows the black electrode to achieve both sufficient blackness and conductivity that cannot be obtained with a single particle type
2Illumination intensity
If the thickness of the black electrode film is increased, then blackness is improved, but conductivity deteriorates
Solution Approach 1:
The patent applies local quality by using two types of black particles with different properties: first black particles (higher volume resistivity, smaller diameter) for insulation and blackness, and second black particles (lower volume resistivity, larger diameter) for conductivity. This allows different regions of the black electrode to have different functional characteristics, achieving both sufficient blackness and conductivity simultaneously
Solution Approach 2:
The patent uses composite materials by combining two types of black particles with distinct properties in a single photocuring composition. The first black particles provide insulative properties and blackness, while the second black particles provide conductive properties. This composite approach allows the black electrode to achieve both sufficient blackness and conductivity that cannot be obtained with a single particle type
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 composition allows for the formation of black layers with sufficient conductivity between transparent and white layers, while also providing insulation between display electrodes, enhancing the contrast and efficiency of the plasma display panel.
Implementation Method 1
a photocuring composition includes first black particles, second black particles, an organic binder, a photopolymerizable monomer and a photopolymerization initiator
Implementation Method 2
The second black particles have a volume resistivity lower than that of the first black particles
Data Source
AI summary
A photocuring composition includes black particles (A), black particles (B), an organic binder (C), a photopolymerizable monomer (D), and a photopolymerization initiator (E). The black particles (B) have a volume resistivity lower than the volume resistivity of the black particles (A) and an average diameter larger than the average diameter of the black particles (A).