Liquid Crystal Panel Black Matrix Static Protection
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Solution Overview
Problem
The production of liquid crystal panels is inefficient due to the need for depositing conducting layers, which consumes significant time and reduces efficiency, while also requiring additional static electricity protection designs to prevent damage from high-voltage discharges.
Innovation Solution
Conducting materials such as carbon nanotubes or carbon black are mixed into black matrix coating materials and dispersed using ultrasonic waves, allowing the black matrix to conduct electricity and connect with a ground wire for static protection, eliminating the need for additional electrode deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conducting layer is deposited on the color film substrate to conduct static electricity, then the liquid crystal display is protected from static electricity damage, but the production time increases and production efficiency decreases
Solution Approach 1:
The patent combines the black matrix layer and conducting layer into a single integrated layer. The black matrix coating material contains conducting materials (silver, aluminum, or copper particles) that provide static electricity conduction functionality while maintaining the black matrix's optical shielding function. This eliminates the need for a separate conducting layer deposition process, reducing production time while maintaining static electricity protection.
Solution Approach 2:
The black matrix layer is designed to serve multiple functions simultaneously: optical shielding (blocking light leakage), static electricity conduction (through embedded conducting particles), and structural support. By making the black matrix multi-functional, the patent eliminates the need for additional dedicated conducting layers, thereby reducing production steps and time.
2Reliability
If a conducting layer is deposited on the color film substrate, then static electricity can be conducted, but additional deposition processes are required which reduce production efficiency
Solution Approach 1:
The patent merges the black matrix deposition process with the conducting layer formation process. Conducting materials are mixed into the black matrix coating material before deposition, allowing both layers to be formed in a single step. This integration eliminates additional deposition processes, improving production efficiency while ensuring reliable static electricity conduction.
Solution Approach 2:
The conducting materials are pre-mixed into the black matrix coating material before the deposition process. This preliminary preparation ensures that the conducting materials are uniformly distributed in the coating slurry, allowing the conducting functionality to be achieved during the standard black matrix deposition without requiring separate conducting layer formation steps.
3Reliability
If ITO, IZO, AZO, or GZO is used as conducting material, then static electricity protection is achieved, but the production cost increases
Solution Approach 1:
The patent replaces expensive conducting materials (ITO, IZO, AZO, GZO) with cheaper alternatives such as silver particles, aluminum particles, or copper particles embedded in the black matrix layer. These particulate conducting materials are significantly less expensive than transparent conducting oxides, thereby reducing production cost while maintaining static electricity conduction capability.
Solution Approach 2:
The patent changes the physical form and composition of conducting materials from transparent conducting oxide films to metallic particles embedded in polymer or resin matrices. This parameter change allows the use of cheaper metallic particles (silver, aluminum, copper) instead of expensive oxide materials, reducing cost while achieving the required conductivity for static electricity protection.
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 method increases the reliability of liquid crystal panels by effectively conducting static electricity, enhances production efficiency, and reduces costs by omitting the deposition of additional conducting layers.
Implementation Method 1
the conducting materials are uniformly dispersed in black matrix coating materials by ultrasonic waves in the dispersing treatment
Implementation Method 2
the black matrix can conduct electricity; therefore, the liquid crystal panel can conduct static electricity by the conductivity of the black matrix
Data Source
AI summary
The present invention discloses a liquid crystal panel and a manufacturing method thereof, and a liquid crystal display; the manufacturing method of the liquid crystal panel comprises the following steps: conducting materials are mixed into black matrix coating materials and black matrix deposition is conducted. In the present invention, because the conducting materials are mixed into the black matrix coating materials, the black matrix can conduct electricity and therefore, the liquid crystal panel can conduct static electricity by the conductivity of the black matrix to protect the liquid crystal panel and assemblies on the liquid crystal panel; the reliability of the liquid crystal panel is increased, because of the conductivity of the black matrix, the liquid crystal panel does not need additional conducting design (i.e. a layer of electrodes does not need to be deposited on the color film substrate of the liquid crystal panel), a deposition technology is omitted, production efficiency is increased and the production cost of the liquid crystal panel is economized.