Abstract:
A method for using an organic dielectric as a sacrificial layer for forming suspended or otherwise spaced structures. The use of an organic dielectric has a number of advantages, including allowing use of an organic solvent or etch to remove the sacrificial layer. Organic solvents only remove organic materials, and thus do not affect or otherwise damage non-organic layers such as metal layers. This may reduce or eliminate the need for the rinsing and drying steps often associated with the use of acidic etchants such as Hydrofluoric Acid.
Abstract:
A process for structuring a movable element out of a membrane region. A sacrificial layer and a sealing layer are applied to the underside of the membrane region. Following removal of the sacrificial layer, sealing layer forms a limit stop and a seal for the movement of the movable element.
Abstract:
PROBLEM TO BE SOLVED: To provide a sacrificial polymer layer with no residue and slight LER using a PAG (photoacid generating substance) double layer, a method for decomposing the sacrificial polymer layer, and a method for manufacturing an air cavity or an air gap improved using it.SOLUTION: A photoacid generating substance is incorporated in a PGA double layer, and a structure of a concentration of PAG at an upper part is higher than a lower part. A sacrificial layer 15 on which the PAG is not present is formed on a substrate 10. After the sacrificial layer is dried, a PAG single layer 20 is formed and a layer 15 and a layer 20 form a PAG double layer 25. Then, an image shape exposure (beam radiation 35) of the double layer 25 is performed using shielding material 30. An exposed portion is removed by a thermal decomposition method, and a non-exposed portion 40 remaining on the substrate is left. Then, a protective coating layer 50 is arranged on a structure, and is heated to a temperature proper for decomposing the portion 45 and permeating a decomposition product passing through the protective coating layer 50, and then, an air gap 55 is formed.
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor device manufacturing method which can manufacture in a simpler process a semiconductor device capable of inhibiting unevenness and cracks after grinding caused by presence of existence and non-existence of a cavity and contributing to downsizing of devices and electronic equipment on which the devices are mounted.SOLUTION: A semiconductor device manufacturing method comprises in order: a bonding step of bonding a first substrate having light permeability with a second substrate provided with a functional element on one face such that the functional element faces the first substrate; a thinning process of thinning at least one of the first substrate and the second substrate; and a through hole forming step of forming a cavity and a through hole communicating with the cavity on at least a part of a bonded part of the first substrate and the second substrate.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of fabricating a structure. SOLUTION: The composition includes a sacrificial polymer for causing acid-catalyzed decomposition and a catalytic amount of a photoacid generator. COPYRIGHT: (C)2010,JPO&INPIT