A semiconductor device in which degradation due to permeation of water and oxygen can be limited, e.g., a light emitting device having an organic light emitting device (OLED) formed on a plastic substrate, and a liquid crystal display using a plastic substrate. A layer to be debonded, containing ele
A semiconductor device in which degradation due to permeation of water and oxygen can be limited, e.g., a light emitting device having an organic light emitting device (OLED) formed on a plastic substrate, and a liquid crystal display using a plastic substrate. A layer to be debonded, containing elements, is formed on a substrate, bonded to a supporting member, and debonded from the substrate. A thin film is thereafter formed on the debonded layer. The debonded layer with the thin film is adhered to a transfer member. Cracks caused in the debonded layer at the time of debonding are thereby repaired. As the thin film in contact with the debonded layer, a film having thermal conductivity, e.g., film of aluminum nitride or aluminum nitroxide is used. This film dissipates heat from the elements and has the effect of preventing deformation and change in quality of the transfer member, e.g., a plastic substrate.
대표청구항▼
What is claimed is: 1. A method of fabricating an electric device comprising: forming a nitride layer on a substrate; forming an oxide layer on the nitride layer; forming an insulating layer on the oxide layer; forming a layer containing devices on the insulating layer; bonding a supporting member
What is claimed is: 1. A method of fabricating an electric device comprising: forming a nitride layer on a substrate; forming an oxide layer on the nitride layer; forming an insulating layer on the oxide layer; forming a layer containing devices on the insulating layer; bonding a supporting member to the layer containing devices, and thereafter debonding the supporting member from the substrate by a physical means at a position in the oxide layer or at an interface on the oxide layer; forming a film having high thermal conductivity on the insulating layer or the oxide layer; and bonding a transfer member to the film having high thermal conductivity to interpose the devices between the supporting member and the transfer member. 2. A method of fabricating an electric device according to claim 1, wherein the film having high thermal conductivity is formed of a nitride containing aluminum, a nitroxide containing aluminum, or an oxide containing aluminum. 3. A method of fabricating an electric device according to claim 1, wherein the nitride layer contains a metallic material. 4. A method of fabricating an electric device according to claim 1, wherein the metallic material is a single layer of an element selected from the group consisting of Ti, Al, Ta, W, Mo, Cu, Cr, Nd, Fe, Ni, Co, Ru, Rh, Pd, Os, Ir, and Pt, an alloy or a chemical compound having the element as a main component, or a multilayer formed of such materials. 5. A method of fabricating an electric device according to claim 1, wherein a heat treatment or a treatment using irradiation with laser light is performed before debonding by the physical means. 6. A method of fabricating an electric device according to claim 1, wherein the oxide layer is a single layer of a silicon oxide material or a metallic oxide material, or a multilayer of these materials. 7. A method of fabricating an electric device according to claim 1, wherein the devices are thin-film transistors having a semiconductor layer as an active layer, and forming the semiconductor layer includes crystallizing a semiconductor layer of an amorphous structure by a heat treatment or a treatment using irradiation with laser light to obtain a semiconductor layer of a crystalline structure. 8. A method of fabricating an electric device according to claim 1, wherein the supporting member is an opposed substrate, the devices have pixel electrodes, and a space between the pixel electrodes and the opposed substrate is filled with a liquid crystal material. 9. A method of fabricating an electric device according to claim 1, wherein the supporting member is a sealing member, and the device is a light emitting device. 10. A method of fabricating an electric device according to claim 1, wherein the supporting member is a film substrate or a base material. 11. A method of fabricating an electric device according to claim 1, wherein the transfer member is a film substrate or a base material. 12. A method of fabricating an electric device, comprising: forming a first layer on a substrate; forming a second layer on the first layer; forming an insulating layer on the second layer; forming at least one semiconductor device over the insulating layer; forming a first bonding layer over the at least one semiconductor device; bonding a supporting member to the bonding layer; separating the substrate from the supporting member by utilizing a stress caused by the first and second layers so that the supporting member supports at least the semiconductor device after the separation; forming a film having high thermal conductivity on an exposed surface over the semiconductor device at which the separation of the supporting member occurred; forming a second bonding layer on the layer having high thermal conductivity; and bonding a transfer member in contact with the second bonding layer so that the semiconductor device is interposed between the supporting member and the transfer member. 13. A method of fabricating an electric device according to claim 12, wherein the transfer member is a plastic film. 14. A method of fabricating an electric device according to claim 12, wherein the first layer comprises a nitride of at least one element selected from the group consisting of Ti, Al, Ta, W, Mo, Cu, Cr, Nd, Fe, Ni, Co, Ru, Rh, Pd, Os, Ir, and Pt. 15. A method of fabricating an electric device according to claim 12, wherein the first layer comprises tungsten. 16. A method of fabricating an electric device according to claim 12, wherein the film having high thermal conductivity comprises a material selected from the group consisting of a nitride containing aluminum, a nitroxide containing aluminum, and an oxide containing aluminum. 17. A method of fabricating an electric device according to claim 12, wherein the second layer comprises silicon oxide. 18. A method of fabricating an electric device according to claim 12, wherein the second layer comprises a metal oxide. 19. A method of fabricating an electric device according to claim 12, wherein the semiconductor device includes a thin-film transistor, said thin film transistor having a semiconductor layer as an active layer. 20. A method of fabricating an electric device according to claim 12, wherein a heat treatment or a treatment using irradiation with laser light is performed before separating the supporting member from the substrate. 21. A method of fabricating an electric device according to claim 12, further comprising a step of forming a pixel electrode in contact with the semiconductor device and a liquid crystal material over the pixel electrode. 22. A method of fabricating an electric device comprising: forming on a substrate a layer to be debonded, said layer including at least one semiconductor; bonding a supporting member to the layer to be debonded; debonding the supporting member from the substrate by a physical means; and forming a film having high thermal conductivity in contact with the layer which has been already debonded. 23. A method of fabricating an electric device comprising: forming a nitride layer on a substrate; forming an oxide layer on the nitride layer; forming an insulating layer on the oxide layer; forming a layer containing devices on the insulating layer; bonding a supporting member to the layer containing devices, and thereafter debonding the supporting member from the substrate at a position in the oxide layer or at an interface on the oxide layer; forming a film having high thermal conductivity on the insulating layer or the oxide layer; and bonding a transfer member to the film having high thermal conductivity to interpose the devices between the supporting member and the transfer member. 24. A method of fabricating an electric device according to claim 23, wherein the film having high thermal conductivity is formed of a nitride containing aluminum, a nitroxide containing aluminum, or an oxide containing aluminum. 25. A method of fabricating an electric device according to claim 23, wherein the nitride layer contains a metallic material. 26. A method of fabricating an electric device according to claim 23, wherein the metallic material is a single layer of an element selected from the group consisting of Ti, Al, Ta, W, Mo, Cu, Cr, Nd, Fe, Ni, Co, Ru, Rh, Pd, Os, Ir, and Pt, an alloy or a chemical compound having the element as a main component, or a multilayer formed of such materials. 27. A method of fabricating an electric device according to claim 23, wherein the oxide layer is a single layer of a silicon oxide material or a metallic oxide material, or a multilayer of these materials. 28. A method of fabricating an electric device according to claim 23, wherein the devices are thin-film transistors having a semiconductor layer as an active layer, and forming the semiconductor layer includes crystallizing a semiconductor layer of an amorphous structure by a heat treatment or a treatment using irradiation with laser light to obtain a semiconductor layer of a crystalline structure. 29. A method of fabricating an electric device according to claim 23, wherein the supporting member is an opposed substrate, the devices have pixel electrodes, and a space between the pixel electrodes and the opposed substrate is filled with a liquid crystal material. 30. A method of fabricating an electric device according to claim 23, wherein the supporting member is a sealing member, and the device is a light emitting device. 31. A method of fabricating an electric device according to claim 23, wherein the supporting member is a film substrate or a base material. 32. A method of fabricating an electric device according to claim 23, wherein the transfer member is a film substrate or a base material.
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