In response to requests from many customers, we have handled a quantity of up to 2,300 pieces.
The currently used halftone masks are created by forming a halftone film on a substrate that has already been masked, and then further patterning it. Types where the halftone film exists above the Cr film are called top-type halftone masks. The CST halftone film has been used in actual processes as a top-type halftone film since 2002. Since then, we have handled a quantity of up to 2300 sheets in response to many customer requests. 【CST Halftone Series】 ○FHT Series (Film Type: Pure Cr) →Basic material transmission tolerance: less than 1% ○HT Series (Film Type: CrOx) →Basic material transmission tolerance: Δ5% to Δ10% or less ○PS Series (Film Type: CrOx) →Basic material transmission tolerance: Δ5% to Δ10% or less For more details, please contact us or download the catalog.
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basic information
[CST Halftone Blanks Film Composition] ○Binary (CrOx): 300Å ○Binary (Cr) includes barrier layer (80Å): 950Å or 700Å ○ES: 100Å ○HT layer depends on its transparency rate or HT type: 1140Å →Phase Shift layer (CrOx) λ=365nm T=5% ○QZ ●For more details, please contact us or download the catalog.
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CST Corporation (formerly: Clean Surface Technology Co., Ltd.) Company Profile
Halftone Mask "CST Halftone Series"
Company information
In April 1977, we started as the first domestic manufacturer specializing in mask blanks. From our initial focus on semiconductor mask blanks, we have expanded our business to include FPD mask blanks and halftone films, staying ahead of the times. In response to customer requests for quality improvement, we have developed new blanks compatible with high-resolution masks. Moving forward, we will continue to strive for further quality enhancement and the development of new products that meet customer needs, with all employees working together to ensure satisfaction. Additionally, as a good corporate citizen, we will fulfill our social responsibility as a member of the local and international community towards the creation of a sustainable society.