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Mask Blanks/Photomasks for Semiconductor Manufacturing
Mask blanks and photomasks are essential in the production of semiconductor chips. They are the master plates used to transfer the minute, highly complex circuit patterns for semiconductors onto the wafers that become IC chips. A photomask is a glass plate onto which a circuit pattern is drawn.
A mask blank is a substrate for a photomask. HOYA has several strengths in this field, including: (1) the superb technologies it uses to precisely polish glass substrates and then lay down homogeneous metallic films on those substrates; (2) the ability to develop new products that exactly meet client needs; and (3) excellent production capabilities, which allow the company to offer a stable supply of finished mask blanks and photomasks to the market.
Mask Blanks/Photomasks for Liquid Crystal Display
LCD mask blanks and photomasks are the master plates that are used in the manufacture of the LCD panels found in large flat televisions and computer monitors. HOYA is the world’s leading producer of LCD photomasks, and it has special strengths in the production of large-scale LCD photomasks. The major factor in today’s demand for LCDs is the constant increase in the size of LCD televisions. There is a corresponding demand for ever larger LCD photomasks. HOYA is contemplating applying the technologies it has developed for its higher-precision semiconductor photomasks in the quality assessment of its LCD masks.
Glass Memory Disks for Hard Disk Drives
Apart from their well-known use in notebook computers, hard disk drives (HDDs) are also found in car navigation systems and digital video cameras. The recording media for hard disk drives used in such mobile devices has to be able to prevent data loss, which means it must have the ability to withstand vibration and shock. Glass memory disks have superior shock-resistance characteristics in comparison to the aluminum disks that are used in non-portable equipment. HOYA, a pioneer in the development of the glass memory disks, produces them using a unified process that extends from the initial glass melting stage through the final finishing.
Optical Lenses
HOYA's optical lenses and optical glass are used widely in products such as cameras and video camcorders. HOYA’s optical lenses can be categorized into two basic types: polished glass lenses (spherical lenses) and molded glass lenses (aspherical lenses).HOYA’s aspherical lenses are formed at high temperatures in metal molds from molten optical glass. HOYA makes full use of its proprietary technologies and long years of experience in their production—from glass formation to lens molding. Because of their sophisticated shapes, aspherical lenses offer excellent correction for aberrations, making it possible to shorten focal distances and reduce the number of lens elements.
This contributes to higher functionality for optical devices like digital cameras, as well as to the smaller size and lower weight of such devices.
Laser Equipment and Glass for Electronic Materials
HOYA develops practical applications for the optical technologies such as laser oscillators and UV light source devices. Main products include defect correction equipment used in the production of flat panel displays and laser oscillators used in highly precise processing, such as analysis aid processing, in semiconductor production. Other key products include the ultraviolet light sources used to cure UV resins in the bonding of optical parts, such as those found in optical pickups and camera modules. Additional products include the color filters and other specialty glasses used in a wide variety of products and fields—cameras, optical parts, industrial production. HOYA provides many kinds of specialty glasses for different applications.