Abstract:
PROBLEM TO BE SOLVED: To provide a method for binding at low temperature or room temperature which can be applied to a flat silicon and growth oxide surface, as well as to a non-planar surface having a flattened deposit material.SOLUTION: A method includes removing a by-product of interface polymerization in order to prevent reversible reaction so as to form room temperature chemical bonding of materials such as silicon, silicon oxide and SiO. The surfaces to be bonded are polished to give them the high degree of smoothness and flatness (2). For VSE, reactive ion etching or wet etching is used in order to etch the surfaces to be bonded slightly (3). The surface roughness and flatness are not reduced, and are increased by the VSE process. The etching surfaces are rinsed with a solution like ammonium hydroxide or ammonium fluoride, and the formation of a desirable chemical species on the surfaces is thereby promoted (4).
Abstract:
PROBLEM TO BE SOLVED: To provide a bonding method of a substrate for three-dimensional device integration.SOLUTION: A bonding method includes using a bonding layer having a fluorinated oxide. Fluorine may be introduced into the bonding layer by exposure to a fluorine-containing solution, vapor, or gas or by implantation. The bonding layer may also be formed using a method where fluorine is introduced into the layer during its formation. The surface of the bonding layer is terminated with a desired species, preferably an NHspecies. This may be accomplished by exposing the bonding layer to an NHOH solution. High bonding strength is obtained at room temperature. The method may also include bonding two bonding layers together and creating a fluorine distribution having a peak in the vicinity of the interface between the bonding layers. One of the bonding layers may include two oxide layers formed on each other. The fluorine concentration may also have a second peak at the interface between the two oxide layers.
Abstract:
PROBLEM TO BE SOLVED: To provide a three-dimensional integrated circuit device using direct wafer bonding and a method of manufacture thereof.SOLUTION: Either or both of a die 14 and a wafer 10 have semiconductor devices formed therein. A first element having a first contact structure is bonded to a second element having a second contact structure. The first and second contact structures can be exposed at bonding and electrically interconnected as a result of bonding. A via is etched and filled after bonding to expose and form an electrical interconnect to the interconnected first and second contact structures and provide electrical access to the electrical interconnect from a surface. Alternatively, the first and second contact structures are not exposed at bonding, and a via is etched and filled after bonding to electrically interconnect the first and second contact structures and provide electrical access to the interconnected first and second contact structures.
Abstract:
PROBLEM TO BE SOLVED: To provide a bonding method at low temperature or room temperature which includes cleaning and activation of a surface by cleaning or etching.SOLUTION: The method includes a step for removing byproducts of interface polymerization in order to prevent reversible reaction so that room temperature chemical bonding of silicon, silicon oxides and such a material as SiO is carried out. The surface to be bonded is polished to have appropriate smoothness and planarity (2). In the VSE, reactive ion etching or wet etching is used in order to etch the surface to be bonded slightly (3). Surface roughness and planarity do not decrease but are increased by the VSE process. The etching surface is rinsed with a solution of ammonium hydroxide or ammonium fluoride, so as to accelerate formation of a desired bonding chemical species on the surface (4).
Abstract:
PROBLEM TO BE SOLVED: To provide a method of three-dimensionally integrating elements such as singulated dies or wafers and an integrated structure having connected elements such as singulated dies or wafers.SOLUTION: Either or both of the die and wafer have semiconductor devices formed therein. A first element having a first contact structure is bonded to a second element having a second contact structure. The first and second contact structures can be exposed at bonding and is electrically interconnected as a result of the bonding. A via may be etched and filled after bonding to expose and form an electrical interconnect to interconnect the first and second contact structures and provide electrical access to this interconnect from a surface. Alternatively, the first and/or second contact structures are not exposed at bonding, and a via is etched and filled after bonding to electrically interconnect the first and second contact structures and provide electrical access to the interconnected first and second contact structures.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of integrating devices and an integrated device.SOLUTION: An element may include one of a substrate used for heat radiation, impedance matching, or RF separation, an antenna, and a matching network formed of a passive element, and is directly adhered to a semiconductor device including a substrate 20. After that, a remaining part of the semiconductor device is exposed by removing a part of the substrate 20, and a first heat radiation substrate can be adhered to the remaining part of the semiconductor device. A wire can be formed on a surface on which the semiconductor device is exposed. A via can be formed in a device region via the semiconductor device. The wiring can be formed between the device region and a contact structure.
Abstract:
PROBLEM TO BE SOLVED: To bond wafers to each other at a low temperature or an ambient temperature without using external pressure.SOLUTION: This invention relates to a bonded device structure, and the bonded device structure includes: a first substrate having a first pair of metal bonding pads connecting with a device or a circuit and a first nonmetallic region located adjacent to the metal bonding pads on the first substrate 10; a second substrate having a second pair of metal bonding pads located adjacent to the first pair of metal bonding pads connecting with the device or the circuit and a second nonmetallic region located adjacent to the metal bonding pads on the second substrate 13; and a contact bonded boundary surface between the first and second pairs of metal bonding pads which is formed by contact-bonding the first nonmetallic region to the second nonmetallic region. At least one of the first and second substrates may be elastically deformed.
Abstract:
PROBLEM TO BE SOLVED: To provide a device having high integration density and a device integration method.SOLUTION: Surfaces of first and second workpieces are each polished to a surface roughness of about 5 to 10Å. The polished surfaces of the first and second workpieces are bonded together. A surface of a third workpiece is polished to the surface roughness. The surface of the third workpiece is bonded to the joined first and second workpieces. The first, second and third workpieces may each be a semiconductor device having a thin material formed on one surface, preferably in wafer form. The thin materials are polished to the desired surface roughness and then bonded together. The thin materials may each have a thickness of approximately 1 to 10 times the surface non-planarity of the material on which they are formed. A number of devices may be bonded together, and the devices may be different types of devices or different technologies.
Abstract:
A waffle pack device including a member having recesses in a surface of the member to accommodate die from at least one semiconductor wafer. The member is compatible with semiconductor wafer handling equipment and/or semiconductor wafer processing. Preferably, the member accommodates at least a majority of die from a semiconductor wafer. Further, one semiconductor device assembly method is provided which removes die from a singular waffle pack device, places die from the single waffle pack device on a semiconductor package to assemble from the placed die all die components required for an integrated circuit, and electrically interconnects the placed die in the semiconductor package to form the integrated circuit. Another semiconductor device assembly method is provided which removes die from at least one waffle pack device, places die from the at least one waffle pack device on a semiconductor package to assemble from the placed die device components required for an integrated circuit, and electrically interconnects the placed die in the semiconductor package to form the integrated circuit.
Abstract:
In various embodiments, a method for forming a bonded structure is disclosed. The method can comprise mounting a first integrated device die to a carrier. After mounting, the first integrated device die can be thinned. The method can include providing a first layer on an exposed surface of the first integrated device die. At least a portion of the first layer can be removed. A second integrated device die can be directly bonded to the first integrated device die without an intervening adhesive.