摘要:
A semiconductor device wherein the active regions of a transistor are formed in an opening provided in an insulating film (17, 19, 110) electrodes (10, 10', 10") are led out by a polycrystalline silicon film (18) formed on the insulating film, and the upper surfaces of the emitter and base electrodes and the exposed surface of the insulating film are substantially even.
摘要:
A current mirror circuit (20) formed of a PNP (NPN) transistor (201) employs as its load an 1 2 L circuit (30), an injector (31) of the 1 2 L circuit (30) being common with those of another group of I 2 L circuits (40), and a predetermined current being derived from the PNP (NPN) transistor (201) of the current mirror circuit (20).
摘要:
The invention deals with a semiconductor device which comprises a semiconductor substrate (11) of a first conductivity type, a semiconductor region (14, 15) formed on said substrate, and a first insulation film (120, 77) provided between said semiconductor region and said semiconductor substrate, wherein said semiconductor substrate is isolated by said insulation film from a polycrystalline silicon layer (79, 121) formed in the periphery of said semiconductor region (14, 15) thereby to reduce the parasitic capacitance, and wherein said insulation film (79, 121) is stretched and arranged on the lower side of said semiconductor region.
摘要:
A semiconductor device includes a layer (3) doped with impurities, provided between a buried layer (2) and an epitaxial layer (4), and having a conductivity of the type opposite to that of said buried layer (2) and said epitaxial layer (4). A reversely biasing voltage is applied across the buried layer (2) and the doped layer (3). Side surfaces of the epitaxial layer (4) are surrounded by an insulator (7). This helps effectively to prevent any element (10...14) formed in the epitaxial layer (4) from being affected by a-particles and greatly improves the reliability of the semiconductor device.
摘要:
57 A lateral bipolar transistor affording a good controllability for a base length is disclosed. In fabricating a lateral bipolar transistor by forming a single crystal column (15) and disposing heavily doped polycrystalline regions (21E,21C) on both sides of the column (15). contact surfaces between the single crystal column (15) and the heavily doped polycrystalline regions (21E,21C) are controlled by etching of an oxide film (61). The etching of the oxide film (61) can provide a device of a precision higher than attained by controlling any other element.
摘要:
An integrated optical waveguide device includes a substrate (1), and an optical waveguide which is formed in the form of projection or is formed in a trench formed in the substrate. Each optical waveguide has a first optical area (2) made of a first optical material and a second optical area (3) which is made of a second optical material and is surrounded by the first optical area. The optical waveguides are arranged on both side faces of the projection or trench.
摘要:
A semiconductor device wherein the active regions of a transistor are formed in an opening provided in an insulating film (17, 19, 110) electrodes (10, 10', 10") are led out by a polycrystalline silicon film (18) formed on the insulating film, and the upper surfaces of the emitter and base electrodes and the exposed surface of the insulating film are substantially even.
摘要:
According to a semiconductor integrated circuit ot the present invention, a normal transistor (Q 2 ; Q 4 ) and an inverse transistor (Q 1 ; Q 3 ) are formed in a single isolated region, and both the bipolar transistors are connected in series and used in the integrated circuit, thereby to enhance the density of integration. Besides, in the semiconductor integrated circuit of the present invention, the collector region of the normal transistor (Q 2 ; Q 4 ) and the emitter region of the inverse transistor (Q 1 ; Q 3 ) are disposed as a common region.