Color Filter Substrate Manufacturing via Multi-Layer Photoresist Patterning
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Solution Overview
Problem
The conventional manufacturing process for color filter substrates in liquid crystal displays is complex and inefficient, leading to high production costs and low productivity.
Innovation Solution
A simplified method involving the coating and exposure of three layers of photoresist materials - red, green, and blue - to form light-shielding and spacing layers, using fully and partly light-transmitting masks to reduce the number of processing steps and materials needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional sequential coating and exposing of black matrix material, red, green, blue photoresist materials and spacing column manufacturing is used, then color filter substrate can be manufactured, but the manufacturing process is complex and production efficiency is low
Solution Approach 1:
The patent combines multiple manufacturing steps into a single integrated process. Specifically, it merges the coating of black matrix material with red, green, and blue photoresist materials into one coating step, and combines the exposing operations into a single exposing process using a multi-layer mask, thereby reducing the total number of sequential steps and improving production efficiency
Solution Approach 2:
The patent employs a multi-functional mask structure that serves multiple purposes simultaneously. The mask includes light-shielding layers for defining black matrix regions, color resist patterns for red, green, and blue regions, and spacing column patterns all in one component, allowing a single mask to perform what previously required multiple separate masks and steps
2Ease of manufacture
If conventional manufacturing process with multiple sequential steps is used, then color filter substrate can be manufactured, but manufacturing cost increases
Solution Approach 1:
The patent performs preliminary patterning by coating all photoresist materials (black matrix, red, green, blue) simultaneously before the exposing step. This preliminary action allows subsequent exposing and developing to create multiple patterns in one go, reducing the number of repeated coating-curing cycles and thereby reducing both time and cost
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 significantly reduces the manufacturing process complexity, enhances operational simplicity, and lowers costs while maintaining effective performance by forming a color filter substrate with a light-shielding and spacing layer structure.
Implementation Method 1
coating and exposing three layers of photoresist materials on a first substrate, and colors of the three layers of the photoresist materials are respectively a red color, a green color and a blue color; in the coating and exposure processes, a red color resist block, a green color resist block and a blue color resist block are formed
Data Source
AI summary
A manufacturing method for color filter substrate is disclosed. The method includes: coating and exposing three layers of photoresist materials on a first substrate, and colors of the three layers of the photoresist materials are respectively a red color, a green color and a blue color; in the coating and exposure processes, a red color resist block, a green color resist block and a blue color resist block are formed; forming a light-shielding layer through mixing of two different colors of the photoresist materials in the three layers of the photoresist materials; and forming a spacing layer through stacking of two different colors of the photoresist materials in the three layers of the photoresist materials. A manufacturing method for liquid crystal panel is also disclosed. The present can simplify the manufacturing process of the color filter substrate, reduce the process of the liquid crystal panel and decrease the manufacturing cost.