Patent ID: 9451708
Filing Date: 2016-09-20
CPC Classification: B30B,B32B,H01L,H05K,Y02P,Y10T

Claim Text:
1. A vacuum thermally bonding apparatus for thermally bonding an element onto a substrate under vacuum, said vacuum thermally bonding apparatus comprising: (a) a base, (b) a press cylinder lower plate arranged on the base, (c) a lower heater plate arranged adiabatically above the press cylinder lower plate, (d) a lower plate member arranged on an upper face of the lower heater plate, a substrate-placing member arranged on the lower plate member, (e) supporting posts erected on the base, (f) a press cylinder upper plate fixed to upper portions of the supporting posts, (g) an intermediate member arranged under the press cylinder upper plate, (h) an upper heater plate arranged adiabatically under the intermediate member, (i) an upper frame member arranged gas-tightly on a lower face of the upper heater plate, a lower end of the upper frame member being gas-tightly sealable on a peripheral portion of the lower plate member, (j) an inner frame body attached to a lower face of the upper heater plate within the upper frame member, an lower end face of the inner frame body being positioned above an upper face of the lower plate member, and the lower end face of the inner frame body being brought into gas-tight contact with an upper face of the substrate-placing table when the inner frame body and the substrate-placing table are approached and brought into contact with each other, (k) a driving unit that moves at least one of the lower plate member and the intermediate member relative to each other in an approaching direction, to form a vacuum partition wall defining a vacuum chamber by gas-tightly and slidably sealing the lower end of the upper frame member to the peripheral portion of the lower plate member, to gas-tightly bring the lower end face of the inner frame body into contact with the upper face of the substrate-placing table by further moving at least one of the lower plate member and the intermediate member relative to each other in the approaching direction, and to move at least one of the lower plate member and the intermediate member relative to each other in a separating direction, and (l) a vacuuming or pressurizing opening for deaerating to vacuum or pressurizing the vacuum chamber inside the vacuum partition wall, (m) wherein the vacuum chamber is opened by moving at least one of the lower plate member and the intermediate member relative to each other in the separating direction with the driving unit, (n) the substrate is placed on an upper face of the substrate-placing table, the element is placed on an upper face of the substrate via an adhesive; a pressurizing release film is placed on or above an upper face of the element, while being extended above and outside the substrate and the outer peripheral portion of the pressurizing release film and the lower face of the inner frame body are opposed to each other outside the substrate; (o) by moving at least one of the lower plate member and the intermediate member relative to each other in the approaching direction with the driving unit, the lower end of the upper frame member is gas-tightly slidably sealed to the peripheral portion of the lower plate member and the vacuum partition wall to define the vacuum chamber therein is formed, (p) the pressurizing release film is contacted with the upper face of the element, and softened under heating in the atmospheric pressure, (q) the vacuum chamber is evacuated to vacuum via the vacuuming or pressurizing opening, (r) the outer peripheral portion of the pressurizing release film is gas-tightly held between the upper face of the substrate-placing table and the lower face of the inner frame body by further moving at least one of the lower plate member and the intermediate member relative to each other in the approaching direction by means of the driving unit; and (s) by applying the atmospheric pressure or a pressure higher than the atmospheric pressure to a space above the pressurizing release film inside the vacuum chamber via the vacuuming or pressurizing opening in this state, the pressurizing release film is adhered to the outer surfaces of the substrate and the element, and the element is bonded to the substrate.