To provide a method for manufacturing a semiconductor device including a transfer step that is capable of controlling the adhesiveness of a substrate and an element-formed layer in the case of separating the element-formed layer including a semiconductor element or an integrated circuit formed over
To provide a method for manufacturing a semiconductor device including a transfer step that is capable of controlling the adhesiveness of a substrate and an element-formed layer in the case of separating the element-formed layer including a semiconductor element or an integrated circuit formed over the substrate from the substrate and bonding it to another substrate. An adhesive agent made of a good adhesiveness material is formed between the semiconductor element or the integrated circuit comprising plural semiconductor elements formed over the substrate (a first substrate) and the substrate, and thus it is possible to prevent a semiconductor element from peeling off a substrate in manufacturing the semiconductor element, and further, to make it easier to separate the semiconductor element from the substrate by removing the adhesive agent after forming the semiconductor element.
대표청구항▼
What is claimed is: 1. A method for manufacturing a semiconductor device, comprising the steps of: forming a metal layer over a first substrate; forming an adhesive agent on a portion of the metal layer; forming an oxide layer to cover the metal layer and the adhesive agent; forming an element-for
What is claimed is: 1. A method for manufacturing a semiconductor device, comprising the steps of: forming a metal layer over a first substrate; forming an adhesive agent on a portion of the metal layer; forming an oxide layer to cover the metal layer and the adhesive agent; forming an element-formed layer including a semiconductor element over the oxide layer; removing the adhesive agent by etching a portion of the element-formed layer; bonding a second substrate to the element-formed layer by an adhesive material; and separating the second substrate and the element-formed layer from the first substrate by a physical means. 2. A method for manufacturing a semiconductor device according to claim 1, wherein the metal layer is formed from any one of tungsten, molybdenum, technetium, rhenium, ruthenium, osmium, rhodium, iridium, palladium, platinum, silver, and gold. 3. A method for manufacturing a semiconductor device according to claim 1, wherein the step of forming the element-formed layer includes a heat treatment step of 400째 C. or more, preferably 600째 C. or more. 4. A method for manufacturing a semiconductor device according to claim 1, wherein the semiconductor element is formed so as not to overlap with the adhesive agent. 5. A method for manufacturing a semiconductor device according to claim 1, wherein a material to be chemically reacted with a metal included in the metal layer is used for the adhesive agent. 6. A method for manufacturing a semiconductor device according to claim 1, wherein any one of silicon, germanium, carbon, boron, magnesium, aluminum, titanium, tantalum, iron, cobalt, nickel, and manganese is used for the adhesive agent. 7. A method for manufacturing a semiconductor device, comprising the steps of: forming a metal layer over a first substrate; forming an adhesive agent on a portion of the metal layer; forming an oxide layer to cover the metal layer and the adhesive agent; forming an element-formed layer comprising an integrated circuit including a plurality of semiconductor elements over the oxide layer; removing the adhesive agent by etching a portion of the element-formed layer; bonding a second substrate to the element-formed layer by a first adhesive material; and separating the second substrate and the element-formed layer from the first substrate by a physical means. 8. A method for manufacturing a semiconductor device according to claim 7, wherein the metal layer is formed from any one of tungsten, molybdenum, technetium, rhenium, ruthenium, osmium, rhodium, iridium, palladium, platinum, silver, and gold. 9. A method for manufacturing a semiconductor device according to claim 7, wherein the step of forming the element-formed layer includes a heat treatment step of 400째 C. or more, preferably 600째 C. or more. 10. A method for manufacturing a semiconductor device according to claim 7, wherein the integrated circuit is formed so as not to overlap with the adhesive agent. 11. A method for manufacturing a semiconductor device according to claim 7, wherein a material to be chemically reacted with a metal included in the metal layer is used for the adhesive agent. 12. A method for manufacturing a semiconductor device according to claim 7, wherein any one of silicon, germanium, carbon, boron, magnesium, aluminum, titanium, tantalum, iron, cobalt, nickel, and manganese is used for the adhesive agent. 13. A method for manufacturing a semiconductor device according to claim 1, further comprising the steps of: bonding the second substrate and the element-formed layer to a third substrate by a second adhesive material; and removing the second substrate from the element-formed layer. 14. A method for manufacturing a semiconductor device according to claim 7, further comprising the steps of: bonding the second substrate and the element-formed layer to a third substrate by a second adhesive material; and removing the second substrate from the element-formed layer. 15. A method for manufacturing a semiconductor device according to claim 1, wherein the adhesive agent is in contact with a portion of the oxide layer. 16. A method for manufacturing a semiconductor device according to claim 7, wherein the adhesive agent is in contact with a portion of the oxide layer. 17. A method for manufacturing a semiconductor device according to claim 1, wherein the portion of the element-formed layer is over the adhesive agent. 18. A method for manufacturing a semiconductor device according to claim 7, wherein the portion of the element-formed layer is over the adhesive agent.
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