Array Substrate Protrusion Column for LCD Mask Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing process of liquid crystal display panels is complex due to the need for multiple masks to form main and sub photo spacers, increasing production costs and process complexity.
Innovation Solution
A method where a protrusion column is formed using a mask process of a color filter film and black matrix to replace the sub photo spacer, eliminating the need for additional masks and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple masks are used to form main and sub photo spacers, then the photo spacer structure can be formed with height difference, but the manufacturing process complexity and production cost increase
Solution Approach 1:
The patent merges the formation of the second color filter film and the second black matrix into a single mask process. The second color filter film is formed in the effective display area while the second black matrix is formed in the non-effective display area simultaneously, eliminating the need for separate masks and reducing manufacturing complexity while maintaining the required height difference structure for photo spacers
Solution Approach 2:
The single mask used to form the second color filter film also serves to form the second black matrix. This multi-functional mask approach allows both structures to be created in one step, reducing the total number of masks required while achieving the same height difference effect that would otherwise require multiple specialized masks
2Manufacturing precision
If Gray-tone mask or Half-tone mask is used to form main and sub photo spacers, then the height difference can be realized, but the production cost increases
Solution Approach 1:
The patent combines the formation of the second color filter film and the second black matrix into a single mask process, eliminating the need for expensive Gray-tone or Half-tone masks. This merging approach reduces material costs and simplifies the manufacturing process while maintaining the required height difference structure for photo spacers
Data Source
AI summary
A manufacturing method for an array substrate is provided. A protrusion column is formed through a mask process of a color filter film and a mask process of a black matrix, and using the protrusion column to realize the function of a Sub PS so that a mask for manufacturing the Sub PS is not required in order to reduce the type and the number of the masks for manufacturing the PS, simplify the manufacturing process, and decrease the production cost. The present invention also provides an array substrate and a liquid crystal display panel adopting the above manufacturing method.