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Electronics

HOYA develops parts and components indispensable in the production of digital products. HOYA´s technology supports the development of, for instance, PCs, LCD TVs and smart phones. HOYA continues cutting edge technological innovation to contribute to an affluent society.

Mask Blanks and Photomasks for Semiconductor Manufacturing
Mask Blanks and 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.

In addition to ensuring a stable supply of high-quality products, HOYA customizes its products to suit the process of each customer. It thus provides high added value, including contributing to the improvement of customer yields.

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Transfer image of circuit pattern in the exposure processA mask blank is a six-inch glass substrate polished precisely* and coated with a metallic film and photosensitizing agent. This substrate becomes a photomask when a circuit pattern is drawn onto it with an electron beam (EB) or laser. In the production of semiconductors, an exposure system is used to transfer the circuit pattern on the photomask onto the semiconductor wafers.

* HOYA´s mask blanks are polished flat to an accuracy of less than one thousandth of a millimeter, with a surface roughness of only one millionth of a millimeter (one nanometer).

HOYA´s mask blanks boast an overwhelming market share. The company provides a wide variety of mask blanks, from those for leading-edge development, to commoditized products, to semiconductor manufacturers and photomask manufacturers in Japan and overseas.

IBD (Ion Beam Deposition) system to form reflective Mo/Si multilayer for EUV lithographyToward Progress in the Miniaturization and Development of EUV Lithography
As the circuit density of semiconductors has been growing greater, design rules (the width of the lines of the circuit drawn on a wafer) have been becoming finer every year. Amid this trend toward miniaturization, fine circuit patterns need to be drawn with high resolution. The trend also requires flawless quality, that is, mask blanks and photomasks with absolutely no scratches or distortion.

The development of extreme ultraviolet (EUV) lithography has been in progress. EUV´s wavelength is only 13.5nm, while the wavelength of the ArF laser, the current light source of exposure systems used in semiconductor production, is 193nm. EUV lithography is expected to lead to even higher-density semiconductors. Electronic devices that incorporate such chips will be faster, smaller and more versatile.

HOYA is progressing steadily with the development of mask blanks and photomasks that will work with EUV lithography, and will continue to support the semiconductor industry by developing state-of-the-art technologies.

Photomasks for Liquid Crystal Display
Photomasks for Liquid Crystal Display

LCD photomasks are the master plates that are used in the manufacture of the LCD panels found in large flat televisions, computer monitors and smartphones. HOYA is the world's leading producer of LCD photomasks, and it has special strengths in the production of high-definition, high-precision LCD photomasks.

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LCD Photomask Plant in Taiwan Since Hoya developed photomasks for LCD in 1985, it has continued to contribute to the market penetration of LCD panels as a leading company among photomask manufacturers.
Owing to the increasing popularization of flat-panel TVs, the LCD panel market has grown substantially during the past ten years. As part of this trend, photomasks have also become larger year by year in response to the development of TVs with larger screens.
At present, demand for small, high-definition panels with advanced performance is expanding in tandem with the market penetration of smartphones. As a result of this trend, even higher specifications have become demanded in the photomasks that Hoya handles as well. Based on the high technological capabilities that we can provide because we handle semiconductor photomasks, we will continue to aim for growth in this business.

Glass Disks for HDDs
Glass Disks for HDDs

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 which HOYA developed have superior shock-resistance characteristics in comparison to the aluminum disks that are used in non-portable equipment.

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Glass disk (substrate) plant in VietnamSuperior Characteristics of Glass Disks
HOYA started development of glass memory disks in 1980 with chemically strengthened glass. In 1996, our technological partnership with IBM led HOYA to ramp up  production capacity that included glass dissolving and pressing. In later years, surface flatness and superior shock resistance of glass substrates have been appraised in the industry and quickly been adapted mostly to mobile devices.

Growing Capacity of Glass Memory Disks
The capacity of HDDs has been growing rapidly, from 160 gigabytes (GB) through 250GB to 320GB. Currently, products with a capacity of 500GB per platter are being produced commercially. The capacity increase of HDDs requires improvement in the quality of glass memory disks. In this environment, HOYA will continue to respond to customer needs through the stable production of high-quality products by taking advantage of its technological excellence.

ONLINE HOYA Report 2016
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