Abstract:
An integrated circuit includes a substrate and an interconnect part above the substrate, and further includes a photosensitive region in the substrate. A filter is provided aligned with the photosensitive region. The filter is formed by at least one layer of filter material. In one implementation for front side illumination, the layer of filter material is positioned above the photosensitive region between the interconnect part and the substrate. In another implementation for back side illumination, the layer of filter material is positioned below the photosensitive region opposite the interconnect part. The layer of filter material is configured such that a product of the thickness of the layer of filter material and the imaginary part of the refractive index of the layer of filter material is above 1 nm.
Abstract:
An integrated circuit may include a digital output port including a buffer stage that includes subassemblies of MOSFET transistors. One subassembly may include two pull-up transistors having sources connected to a common high voltage, and having drains connected to a common node connected to the output terminal. Another subassembly may include pull-down transistors having sources connected to a common low voltage, and having drains connected to the common node. The pull-up and pull-down transistors are formed in a thin semiconductor layer of an FDSOI substrate. The substrate may include a thick semiconductor layer and an oxide layer separating the thin and thick semiconductor layers. Areas of the thick semiconductor layer facing the pull-up and pull-down transistors may be connected to a circuit configured to vary a threshold voltage of the pull-up and pull-down transistors.
Abstract:
A SPAD-type photodiode has a semiconductor substrate with a light-receiving surface. A lattice formed of interlaced strips made of a first material covers the light receiving surface. The lattice includes lattice openings with lateral walls covered by a spacer made of a second material. Then first and second materials have different optical indices, and further each optical index is less than or equal to the substrate optical index. A pitch of the lattice is of the order of a magnitude of an operating wavelength of the photodiode. The first and second materials are transparent at that operating wavelength. The lattice is made of a conductive material electrically coupled to an electrical connection node (for example, a bias voltage node).
Abstract:
The disclosure concerns a method of stressing a semiconductor layer comprising: forming, over a silicon on insulator structure having a semiconductor layer in contact with an insulating layer, one or more stressor blocks aligned with first regions of said semiconductor layer in which transistor channels are to be formed, wherein said stressor blocks are stressed such that they locally stress said semiconductor layer; and deforming second regions of said insulating layer adjacent to said first regions by temporally decreasing, by annealing, the viscosity of said insulator layer.
Abstract:
A multilayer optical filter is provided for an integrated circuit including a substrate and a metallization layer interconnection part. The optical filter is formed from a first filter part located within the interconnection part and positioned over a photosensitive region of the substrate. The optical filter further includes a second filter part positioned above the first filter part and the interconnection part. The first and second filter parts each include a metal layer. The first and second filter parts are separated from each other as a function of a wavelength in vacuum of an optical signal to be filtered and received by the photosensitive region.
Abstract:
An image sensor cell formed inside and on top of a substrate of a first conductivity type includes: a storage region of the second conductivity type; a read region of the second conductivity type; a transfer region located between the storage region and the read region; and a transfer gate topping the transfer region and which does not or does not totally top the storage region. The transfer region comprises a first area of the first conductivity type in the vicinity of the storage region, and a second area of the second conductivity type extending between the first area and the read region.
Abstract:
The invention relates to an integrated circuit comprising: a first semiconductor well (60); a plurality of standard cells (66), each standard cell comprising a first field-effect transistor in FDSOI technology comprising a first semiconductor ground plane located immediately on the first well; and a clock tree cell (30) contiguous with the standard cells, the clock tree cell comprising a second field-effect transistor in FDSOI technology, which transistor comprises a second semiconductor ground plane located immediately on the first well (60), so as to form a p-n junction with this first well. The integrated circuit comprises an electrical power supply network (51) able to apply separate electrical biases directly to the first and second ground planes.
Abstract:
A photonic integrated circuit may include a silicon layer including a waveguide and at least one other photonic component. The photonic integrated circuit may also include a first insulating region arranged above a first side of the silicon layer and encapsulating at least one metallization level, a second insulating region arranged above a second side of the silicon layer and encapsulating at least one gain medium of a laser source optically coupled to the waveguide.
Abstract:
A method is provided for producing a semiconductor layer having at least two different thicknesses from a stack of the semiconductor on insulator type including at least one substrate on which an insulating layer and a first semiconductor layer are successively disposed, the method including etching the first layer so that said layer is continuous and includes at least one first region having a thickness less than that of at least one second region; oxidizing the first layer to form an electrically insulating oxide film on a surface thereof so that, in the first region, the oxide film extends as far as the insulating layer; partly removing the oxide film to bare the first layer outside the first region; forming a second semiconductor layer on the stack, to form, with the first layer, a third continuous semiconductor layer having a different thickness than that of the first and second regions.
Abstract:
A semiconductor electro-optical phase shifter may include an optical action zone configured to be inserted in an optical waveguide, and a bipolar transistor structure configured so that, in operation, collector current of the bipolar transistor structure crosses the optical action zone perpendicular to the axis of the optical waveguide.