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    • 19. 发明专利
    • METHOD OF EVALUATING ELECTROSTATIC CHUCK
    • JP2006351726A
    • 2006-12-28
    • JP2005174157
    • 2005-06-14
    • SHINETSU CHEMICAL CO
    • FUJII HIDENORIYAMAMURA KAZUICHIKANO MASAKI
    • H01L21/683
    • PROBLEM TO BE SOLVED: To provide a method of evaluating an electrostatic chuck which can make an accurate evaluation without changing its behavior according to a wafer which is repeatedly used. SOLUTION: In the method for evaluating characteristics of the electrostatic chuck using the wafer, a degree of purity of the wafer is evaluated and the wafer which was evaluated that the degree of purity is high is used for evaluating the electrostatic chuck. In this case, as for a determination reference of the degree of purity of the wafer, when a contact angle of water with respect to the wafer is equal to or less than 45°, it is determined that the degree of purity of the wafer is high. When it exceeds 45°, it is determined that the degree of purity is low. Concerning ones which are determined that the degree of purity is low, after the degree of purity of the wafer is increased, they are used for evaluating the electrostatic chuck. As a method for increasing the degree of purity of the wafer, an irradiation of ultraviolet rays, a washing with ozone water, a heat treatment in a vacuum at temperatures 300 to 700°C and the like, are listed. COPYRIGHT: (C)2007,JPO&INPIT
    • 20. 发明专利
    • LARGE PELLICLE HOUSING CONTAINER FOR LITHOGRAPHY
    • JP2006350231A
    • 2006-12-28
    • JP2005179619
    • 2005-06-20
    • SHINETSU CHEMICAL CO
    • NAGATA AKIHIKO
    • G03F1/62G03F7/20H01L21/027H01L21/673
    • PROBLEM TO BE SOLVED: To provide a large pellicle housing container for lithography, the container which is free from deformation of a holding frame and deformation of a pellicle film, which is easily handled and conveyed, and which has a simple structure and can be reinforced. SOLUTION: The housing container for housing a large pellicle holds a pellicle film with a frame body having four or more sides in the outer shape, each side in ≥300 mm length or more, and is characterized in that: the housing container is made of a resin; and the housing container is mounted or mounted and joined on a container reinforcing body the outer shape of which is, at least partially, larger than the housing container. The housing container is composed of a cover housing a pellicle, and a tray to support and convey the cover. The reinforcing body is preferably provided with a handle for carrying. Further, the reinforcing body is preferably made of a metal or a resin, or a composite material of a resin and a metal or a composite material of a resin and an inorganic material. Carbon fibers can be used as an inorganic material. COPYRIGHT: (C)2007,JPO&INPIT