Patent classifications
H01L29/02
Thin film transistor array panel and manufacturing method thereof
A thin film transistor array panel includes a substrate, a gate line and a gate pad disposed on the substrate, a gate insulating layer disposed on the gate line and the gate pad, a data line and a data pad disposed on the gate insulating layer, an organic layer disposed on the data line and the data pad, and a connecting member disposed on one of the gate pad and the data pad, in which the organic layer includes a first portion overlapping the connecting member and a second portion not overlapping the connecting member, and a height of the first portion of the organic layer is greater than a height of the second portion of the organic layer.
Silicon nitride process for reduction of threshold shift
A semiconductor device has a substrate with a semiconductor material. The semiconductor device includes a field effect transistor in and on the semiconductor material. The field effect transistor has a gate dielectric layer over the semiconductor material of the semiconductor device, and a gate over the gate dielectric layer. The gate dielectric layer includes a layer of nitrogen-rich silicon nitride immediately over the region for the channel, and under the gate.
Driving method of liquid crystal display device
An object is to provide a driving method of a liquid crystal display device with a low power consumption and a high image quality. A pixel includes a liquid crystal element and a transistor which controls supply of an image signal to the liquid crystal element. The transistor includes, in a channel formation region, a semiconductor which has a wider band gap than a silicon semiconductor and has a lower intrinsic carrier density than silicon, and has an extremely low off-state current. In inversion driving of pixels, image signals having opposite polarities are input to a pair of signal lines between which a pixel electrode is disposed. By employing such a structure, the quality of the displayed image can be increased even in the absence of a capacitor in the pixel.
Gate electrodes with notches and methods for forming the same
A device includes a semiconductor substrate, a gate dielectric over the semiconductor substrate, and a gate electrode over the gate dielectric. The gate electrode has a first portion having a first thickness, and a second portion having a second thickness smaller than the first thickness. The device further includes a source/drain region on a side of the gate electrode with the source/drain region extending into the semiconductor substrate, and a device isolation region. The device isolation region has a part having a sidewall contacting a second sidewall of the source/drain region to form an interface. The interface is overlapped by a joining line of the first portion and the second portion of the gate electrode.
Silicon carbide semiconductor device and method for manufacturing the same
A silicon carbide semiconductor device includes a silicon carbide substrate and a gate electrode. The silicon carbide substrate includes a first source region and a second source region, a first body region, a second body region, a first drift region, a second drift region, a third drift region, and a first connection region. The first connection region is provided to include a first intersection and a second intersection, the first intersection being an intersection of a straight line along a first straight-line portion and a straight line along a second straight-line portion, the second intersection being an intersection of a straight line along a third straight-line portion and a straight line along a fourth straight-line portion, and the first connection region has a second conductivity type.
Multichannel devices with gate structures to increase breakdown voltage
A transistor device is provided that includes a base structure and a superlattice structure that overlies the base structure. The superlattice structure comprises a multichannel ridge having sides that extend to the base structure. The multichannel ridge comprises a plurality of heterostructures that each form a channel of the multichannel ridge. A three-sided gate configuration is provided that wraps around and substantially surrounds the top and sides of the multichannel ridge along at least a portion of its depth. The three-sided gate configuration is configured to re-distribute peak electric fields along the three-sided gate configuration to facilitate the increase in breakdown voltage of the transistor device.
Methods of forming a charge-retaining transistor having selectively-formed islands of charge-trapping material within a lateral recess
A charge-retaining transistor includes a control gate and an inter-gate dielectric alongside the control gate. A charge-storage node of the transistor includes first semiconductor material alongside the inter-gate dielectric. Islands of charge-trapping material are alongside the first semiconductor material. An oxidation-protective material is alongside the islands. Second semiconductor material is alongside the oxidation-protective material, and is of some different composition from that of the oxidation-protective material. Tunnel dielectric is alongside the charge-storage node. Channel material is alongside the tunnel dielectric. Additional embodiments, including methods, are disclosed.
Method of Manufacturing Semiconductor Devices with Transistor Cells and Semiconductor Device
First reinforcement stripes are formed on a process surface of a base substrate. A first epitaxial layer covering the first reinforcement stripes is formed on the first process surface. Second reinforcement stripes are formed on the first epitaxial layer. A second epitaxial layer covering the second reinforcement stripes is formed on exposed portions of the first epitaxial layer. Semiconducting portions of transistor cells are formed in or portions of micro electromechanical structures are formed from the second epitaxial layer.
Method of forming gate dielectric layer for MOS transistor
A method of forming a gate dielectric layer for a MOS transistor includes the following steps. A gate dielectric layer is formed on a substrate. A nitridation process is performed on the gate dielectric layer. A multi-step post nitridation annealing process including two oxygen-containing annealing steps with different respective annealing temperatures is performed on the gate dielectric layer.
Methods for forming integrated circuit having guard rings
A method for forming a semiconductor device includes forming a first guard ring around at least one transistor over a substrate. The method further includes forming a second guard ring around the first guard ring, wherein the second guard ring directly contacts the first guard ring. The method further includes forming an isolation structure between the first guard ring and the second guard ring. The method further includes forming a first doped region adjacent to the first guard ring, the first doped region having a first dopant type. The method further includes forming a second doped region adjacent to the second guard ring, the second doped region having a second dopant type.