摘要:
A method for determining a minimum tension compensation stress which will have a membrane of a thickness of less than or equal to one micrometer, secured to a frame, having, in the absence of any external stress, a desired deflection. The membrane can be made as planar as possible in absence of any external stress, and its thickness can be less than or equal to one micrometer.
摘要:
A method for determining a minimum tension compensation stress which will have a membrane of a thickness of less than or equal to one micrometer, secured to a frame, having, in the absence of any external stress, a desired deflection. The membrane can be made as planar as possible in absence of any external stress, and its thickness can be less than or equal to one micrometer.
摘要:
The invention relates to a process for producing a bond between a first and a second substrate. The process includes preparing surfaces of the substrates to be assembled, and attaching the surfaces to form an assembly of these two surfaces, by direct molecular bonding. The assembly is then heat treated, which includes maintaining the temperature within the range of 50° C. to 100° C. for at least one hour.
摘要:
Method to produce a structure consisting of depositing a material by columnar epitaxy on a crystalline face of a substrate (2), of continuing so that the columns (4) give a continuous layer (5). The surface is provided with a period array of bumps (3) on a nanometric scale, each bump (3) having a support zone (35) and being obtained from an array of crystalline defects and/or strain fields created within a crystalline region (16) located in the vicinity of a bonding interface (15) between two crystalline elements (11, 12) whose crystalline lattices have a twist and/or tilt angle and/or have interfacial lattice mismatch, able to condition the period (38) of the array of bumps (3). The period (38) of the array, the height (36) of the bumps and the size of their support zone (35) being adjusted so that the continuous layer (40) has a critical thickness that is greater than that obtained using epitaxy without the bumps.
摘要:
The invention relates to a method for producing a semiconducting structure including: controlled formation, through a mask (31), in a first substrate (30) in a semiconducting material, of at least one first area in an insulating material (36), up to the level of the lower surface (35) of the mask, before or during the removal of the mask.
摘要:
The invention relates to a process for producing a bond between a first and a second substrate (2, 4), comprising: a) a step of preparing surfaces (6, 8) to be assembled, b) an assembly of these two surfaces, by direct molecular bonding, c) a heat treatment step involving at least maintaining the temperature within the range of 50° C. to 100° C. for at least one hour.
摘要:
Adhesion by molecular bonding of two free surfaces of first and second substrates, for example formed by monocrystalline silicon wafers, comprises at least successively: a cleaning step of the two free surfaces with hydrofluoric acid in vapor phase to make the two free surfaces hydrophobic, a rinsing step of said free surfaces with deionized water with a time less than or equal to 30 seconds a step of bringing said free surfaces into contact.
摘要:
Adhesion by molecular bonding of two free surfaces of first and second substrates, for example formed by monocrystalline silicon wafers, comprises at least successively: a cleaning step of the two free surfaces with hydrofluoric acid in vapor phase to make the two free surfaces hydrophobic, a rinsing step of said free surfaces with deionized water with a time less than or equal to 30 seconds a step of bringing said free surfaces into contact.
摘要:
This invention relates to a method for separating at least two wafers (1, 2) bonded together to form a stacked structure. At least one bending force is applied to all or part of the stacked structure to separate the stacked structure into two parts along a required separation plane. Application particularly for producing a thin semiconducting layer.
摘要:
The invention relates to a process for producing a bond between a first and a second substrate. The process includes preparing surfaces of the substrates to be assembled, and attaching the surfaces to form an assembly of these two surfaces, by direct molecular bonding. The assembly is then heat treated, which includes maintaining the temperature within the range of 50° C. to 100° C. for at least one hour.