Display Panel Light Shielding Composition for Carbon Black Dispersion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional light shielding materials in display panels exhibit abnormal aggregation, leading to the formation of light shielding black points in regions without the material, affecting display and light performance.
Innovation Solution
A display panel design incorporating a light shielding material composed of carbon black particles with acidic functional groups or free radical capture groups on their surfaces, along with a specific composition ratio of carrier, functional solvent, and stabilizer, to enhance dispersion and prevent agglomeration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional light shielding material is used in color filter manufacturing, then the light shielding function is achieved, but abnormal aggregation occurs and light shielding black points are formed affecting display performance
Solution Approach 1:
The patent modifies the surface chemical parameters of carbon black particles by introducing acidic functional groups (carboxyl, hydroxyl, carbonyl) and free radical capture groups through oxidation treatment. This changes the surface polarity and chemical reactivity of the particles, preventing abnormal aggregation during manufacturing processes while maintaining light shielding effectiveness.
Solution Approach 2:
The patent creates a composite light shielding material system consisting of carbon black particles with specific surface functional groups combined with carefully selected carrier compositions and stabilizers. This composite structure prevents particle aggregation and black point formation while achieving reliable light shielding and display performance.
2Object-generated harmful factors
If carbon black particles are used for light shielding, then light shielding effect is achieved, but particles easily aggregate during manufacturing processes
Solution Approach 1:
The patent changes the surface chemical parameters of carbon black particles by introducing acidic functional groups and free radical capture groups. This modification increases surface polarity and prevents particle aggregation, eliminating black point formation while maintaining effective light shielding.
Solution Approach 2:
The patent introduces carrier compositions and stabilizers as intermediary substances that mediate between carbon black particles and the manufacturing environment. These intermediaries prevent direct particle-to-particle contact and aggregation, maintaining stable dispersion and preventing black point formation during processing.
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 modified carbon black particles improve dispersion, reducing black point formation and enhancing display and light emitting performance by increasing surface activity and polarity, thus improving the overall panel performance.
Implementation Method 1
mixing the carbon black particles with an oxidizing solution, forming at least one function group on surfaces of the carbon black particles
Data Source
AI summary
An embodiment of the present application discloses a display panel, a manufacturing method thereof, and a display device thereof. The display panel includes a light emission functional layer and a color filter layer, the color filter layer includes a light shielding units, a light shielding material in the light shielding units includes a light shielding composition. The light shielding composition includes a plurality of carbon black particles and at least one function group located on surfaces of the carbon black particles. The function group is an acidic functional group or a free radical capture group, the acidic functional group is one of a carboxyl group, a hydroxy group, and a carbonyl group. The free radical capture group is a ketone group.