摘要:
In a film forming method using gas cooling, a decrease in a film formation rate and an excessive load on a vacuum pump due to gas introduction are avoided while achieving an adequate cooling effect. A thin film forming device of the present invention includes: a cooling body 10 having a cooling surface 10S located near a rear surface of a substrate 7 in a thin film forming region 9; and a gas introducing unit configured to introduce a gas to between the cooling surface 10S and the rear surface of the substrate 7. In a width-direction cross section of the substrate, a center portion of the cooling surface is shaped to project toward the rear surface of the substrate 7 as compared to both end portions of the cooling surface. In the width-direction cross section of the substrate, the cooling surface preferably has a bilaterally-symmetric shape and more preferably has a shape represented by a catenary curve.
摘要:
A thin film forming apparatus (100) includes: a vacuum chamber (1); a substrate transfer mechanism (40) that is provided in the vacuum chamber (1) and feeds an elongated substrate (8) to a predetermined film forming section (4) that faces a film forming source (27); an endless belt (10) capable of moving in accordance with the feeding of the substrate (8) by the substrate transfer mechanism (40), and configured to define, along an outer peripheral surface of the endless belt itself, a transfer path of the substrate (8) in the film forming section (4) so that a thin film is formed on a surface of the substrate (8) that is being transferred linearly; a through-hole (16) formed in the endless belt (10); and a substrate cooling unit (30) for introducing a cooling gas between the endless belt (10) and a back surface of the substrate (8) through the through-hole (16) from a side of an inner peripheral surface of the endless belt (10) that is moving.
摘要:
The present invention relates to a method of forming a thin film by depositing, in a vacuum, particles emitted from a film forming source (27) on a substrate (21). Specifically, the particles are deposited on the substrate (21) in a state where a movable endless belt (11) is disposed between the film forming source (27) and the substrate (21) so that a film forming area DA is defined on a surface of the substrate (21) by the endless belt (11), whose moving path has a forward path and a return path that are formed between the film forming source (27) and the substrate (21). Typically, the substrate (21) is an elongated substrate having flexibility. The particles are deposited on the substrate (21) that is being transferred from a feed roller (23) to a take-up roller (26).
摘要:
To provide a thin film forming apparatus capable of uniformly and adequately cooling down a substrate. The thin film forming apparatus of the present invention forms a thin film on an elongated substrate in vacuum and includes: a cooling body 1 provided close to a rear surface of the substrate being transferred at an opening 31; a gas introducing unit configured to introduce a gas to between the cooling body 1 and the substrate 21; and a substrate holding unit 3 configured to hold vicinities of both width-direction ends of the substrate traveling at the opening 31.
摘要:
In a purifying method for metal grade silicon, metal grade silicon with a silicon concentration not less than 98 wt % and not more than 99.9 wt % is prepared. The metal grade silicon contains aluminum not less than 1000 ppm and not more than 10000 ppm by weight. The metal grade silicon is heated at a temperature not less than 1500° C. and not more than 1600° C. in an inert atmosphere under pressure not less than 100 Pa and not more than 1000 Pa, and maintained at the temperature in the atmosphere for a predetermined period.
摘要:
The present invention provides a film forming method and a film forming apparatus each of which is capable of forming films at low cost. The film forming method of the present invention includes the steps of (i) melting a solid material 51 of a thin film to prepare a melted liquid, solidifying the melted liquid 51a to form a rod-shaped body 51b, and pulling out the rod-shaped body 51b, (ii) melting and supplying a part of the rod-shaped body 51b to a melted liquid (evaporation source) 51d, and (iii) using the melted liquid (evaporation source) 51d to form the thin film. The steps (i), (ii), and (iii) are carried out in vacuum.
摘要:
Particles coming from an evaporation source 9 are deposited on a substrate 21 at a specified film forming position 33 in a vacuum so as to form a thin film on the substrate 21. A rod-shaped material 32 containing a source material of the thin film is melted above the evaporation source 9 and the melted material is supplied to the evaporation source 9 in the form of droplets 14. As the rod-shaped material 32, a rod-shaped silicon material in which a plurality of first regions each surrounded by a grain boundary are present at positions of 90% length from a center toward an outer peripheral part on a cross section perpendicular to a longitudinal direction of the material, and an area-weighted average value of major diameters of the first regions is 200 μm or less, and a plurality of second regions each surrounded by a grain boundary are present at positions of 50% length from the center toward the outer peripheral part, and an area-weighted average value of major diameters of the second regions is 1000 μm or more is used.
摘要:
Particles coming from an evaporation source 9 are deposited on a substrate 21 at a predetermined film forming position 33 in a vacuum so as to form a thin film on the substrate 21. A bulk material 32 containing a source material of the thin film is melted above the evaporation source 9, and the melted material is supplied to the evaporation source 9 in the form of droplets 14. A silicon material 32 including a plurality of pores therein is used as the bulk material 32. Preferably, the pores have a lower average internal pressure than an atmospheric pressure. More preferably, the average internal pressure is 0.1 atm or less.
摘要:
Disclosed is a mold 10 for forming cast rods including: a segment assembly 12 including a plurality of segments 14 being placed side by side, and a plurality of cavities 26 extending along a longitudinal direction 16; and clamping means (18 to 21) for clamping the segment assembly 12 in directions orthogonal to the longitudinal direction 16. The mold 10 has one or more cavity-forming portions 28 each forming a part of one of the peripheral surfaces of the cavities 26. Each cavity 26 is formed by a combination of two or more segments 14, and at least one of the plurality of segments 14 has two or more cavity-forming portions 28.
摘要:
Disclosed is a mold 10 for forming cast rods including: a segment assembly 12 including a plurality of segments 14 being placed side by side, and a plurality of cavities 26 extending along a longitudinal direction 16; and clamping means (18 to 21) for clamping the segment assembly 12 in directions orthogonal to the longitudinal direction 16. The mold 10 has one or more cavity-forming portions 28 each forming a part of one of the peripheral surfaces of the cavities 26. Each cavity 26 is formed by a combination of two or more segments 14, and at least one of the plurality of segments 14 has two or more cavity-forming portions 28.