公开(公告)号：US3742315A

公开(公告)日：1973-06-26

申请号：US3742315D

申请日：1971-10-18

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： KANO G ,  HASEGAWA H ,  IIZUKA M ,  FUJIWARA S ,  TERAMOTO I ,  IWASA H

IPC: H01L21/306 ,  H01L23/485 ,  H01L29/00 ,  H01L29/872 ,  H01L5/02 ,  H01L7/50 ,  H01L7/60

CPC classification number: H01L29/872 ,  H01L21/30608 ,  H01L23/4855 ,  H01L29/00 ,  H01L2924/0002 ,  Y10S148/051 ,  Y10S148/102 ,  Y10S148/115 ,  Y10S148/139 ,  H01L2924/00

Abstract: A semiconductor device having a Schottky barrier junction formed in the bottom of a polygonal recess on a surface of a semiconductor substrate comprises an undercut in the recess beneath an insulating mask formed on the substrate, and a metal passing through the mask and extending to the bottom of the recess for forming said junction. The undercut provides an enclosed spacing encircling the junction portion of said metal and said semiconductor, thereby improving the backward breakdown voltage characteristic therein.

公开(公告)号：US3714598A

公开(公告)日：1973-01-30

申请号：US3714598D

申请日：1971-03-22

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： WAKAI S ,  NABAE M

IPC: H03G3/20 ,  H03G3/30 ,  H03G3/34 ,  H04N5/53

CPC classification number: H04N5/53 ,  H03G3/3052 ,  H03G3/345

Abstract: An AGC amplifier having a Darlington pair as a noise gate circuit for preventing the development of unwanted AGC outputs due to noise pulses. The Darlington pair develops a larger overdrive with the same base current than if a single transistor is employed, so a longer storage time of the transistors results, lengthening the gate period. This makes available an AGC amplifier circuit with a noise gate circuit whose gate period is longer without using a capacitor, thereby providing a convenient means for application to monolithic integrated circuits.

公开(公告)号：US3705364A

公开(公告)日：1972-12-05

申请号：US3705364D

申请日：1969-09-29

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： TAKESHIMA MASUMI

IPC: H03C3/22 ,  H01L21/00 ,  H01L21/308 ,  H01L29/00 ,  H03B9/12 ,  H03B9/14 ,  H03C7/02 ,  H03L7/04 ,  H03C3/08

CPC classification number: H03L7/04 ,  H01L21/00 ,  H01L21/308 ,  H01L29/00 ,  H03B9/141 ,  H03B2200/0068

Abstract: Apparatus for generating microwaves comprising a cavity resonator, a microwave generating element and a solid-state variable reactance element such as a variable capacitance diode, both of these elements being disposed within the cavity resonator. It is possible to obtain a controlled and/or a modulated microwave output from the apparatus by varying the reactance of and/or by supplying a modulating signal to the variable reactance element.

公开(公告)号：US3600235A

公开(公告)日：1971-08-17

申请号：US3600235D

申请日：1969-06-02

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： OKUMURA TOMISABURO

IPC: H01L21/316 ,  H01L29/00 ,  H01L7/34

CPC classification number: H01L21/31662 ,  H01L21/02238 ,  H01L21/02255 ,  H01L29/00 ,  Y10S148/141

Abstract: A MANUFACTURING METHOD OF A SEMICONDUCTOR DEVICE HAVING A SOURCE AND DRAIN DOPED OPPOSITE CONDUCTION TYPE TO THE SUBSTRATE AND A GATE ON AN INSULATOR FILM COATED ON A SURFACE PORTION OF THE SEMICONDUCTOR SUBSTRATE BETWEEN BOTH DOPED REGIONS; FORMING A DOPED LAYER PRELIMINARILY ON THE WHOLE SURFACE OF SUBSTRATE, ETCHING THESE LAYERS SO AS TO FORM THE SOURCE AND DRAIN REGIONS, AND FORMING A GATE INSULATOR FILM ON THE PORTIONS WHERE THE DOPED LAYERS ARE REMOVED BY ETCHING, THEREBY FORMING THE GATE ELECTRODE ON THESE PORTIONS. BY THESE STEPS A SEMICONDUCTOR DEVICE HAVING A HIGH MUTUAL CONDUCTANCE AND A LOW INPUT ELECTRIC CAPACITANCE CAN BE OBTAINED. THIS METHOD IS APPLICABLE TO THE MANUFACTURE OF ACTIVE ELEMENTS SUCH AS TRANISTORS AND FURTHER INTEGRATED CIRCUIT ELEMENT.

公开(公告)号：US3591838A

公开(公告)日：1971-07-06

申请号：US3591838D

申请日：1968-12-23

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： FUJIWARA SHOHEI ,  KANO GOTA ,  MATSUOKA SHUNSUKE ,  SAWAKI TSUKASA

IPC: H01L21/00 ,  H01L21/20 ,  H01L21/24 ,  H01L21/28 ,  H01L21/283 ,  H04R1/10 ,  H04R5/033 ,  H01L3/00

CPC classification number: H01L21/28 ,  H01L21/00 ,  H01L21/24 ,  H01L21/283 ,  Y10S148/02

Abstract: In a semiconductor device a metal electrode film formed by an evaporated gold-chromium alloy containing 3 percent to 13 percent by weight of chromium can not only make low ohmic contact with the semiconductor substrate but can be connected to it mechanically firmly. The lead-tin eutectic alloy can be soldered satisfactorily to the metal electrode film without causing erosion even if the electrode film is dipped in a fused solder solution. The semiconductor device with such a gold-chromium alloy film has great industrial merit since the manufacturing steps, particularly the connection of external electrode lead wires, are greatly simplified.

公开(公告)号：US3578754A

公开(公告)日：1971-05-18

申请号：US3578754D

申请日：1969-02-25

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： KUSUDA ZENJI ,  KOBAYASHI TAKEJI

IPC: F25D21/08 ,  F24F11/02 ,  F25D21/00 ,  G05D23/24 ,  F25D21/06

CPC classification number: F25D21/006 ,  F25D2700/122 ,  G05D23/1909 ,  G05D23/24

Abstract: A defrosting controller for electric refrigerators which is operated under control of a first transistor adapted for triggering a silicon-controlled rectifier depending upon the result detected by a temperature detector in the freezer of the refrigerator and under control of a second transistor for keeping the first transistor in one state during the defrosting operation so that the defrosting operation is automatically stopped as soon as the temperature within the freezer reaches a predetermined temperature after starting the defrosting operation. Thus, frost accumulated within the freezing compartment can completely be removed and an unnecessary temperature rise within the freezing and provisions compartments can be prevented.

公开(公告)号：US3573352A

公开(公告)日：1971-04-06

申请号：US3573352D

申请日：1968-04-08

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： FUJITA YASUHIRO

IPC: H04N9/73 ,  H04N9/32

CPC classification number: H04N9/73

Abstract: This specification discloses a color television receiver wherein the white balance controlling reference color illumination occurring in a portion of the fluorescent screen is passed through three primary-color filters so as to be separated into ''''red,'''' ''''green'''' and ''''blue'''' light rays which are irradiated onto photosensitive elements so that variations in the filtered light rays are converted to electrical quantities to be fed back to the video circuit, thereby directly or indirectly controlling the color reproduction signal voltage to be applied to the color picture tube.

公开(公告)号：US3551717A

公开(公告)日：1970-12-29

申请号：US3551717D

申请日：1969-03-06

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： KATO YOSHIO ,  KONOSU OSAMU ,  NAKAGAWA YOSHIO

IPC: H01J1/42 ,  H01J7/24 ,  H01J19/36 ,  H01J23/00 ,  H01J7/42 ,  H01J19/74 ,  H01J25/50

CPC classification number: H01J23/005 ,  H01J19/36 ,  H01J2893/0027

公开(公告)号：US3541021A

公开(公告)日：1970-11-17

申请号：US3541021D

申请日：1967-08-10

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： MIZUNO HIDEO

IPC: C09K11/77 ,  C09K1/36

CPC classification number: C09K11/7779

公开(公告)号：US3529431A

公开(公告)日：1970-09-22

申请号：US3529431D

申请日：1968-08-27

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： KUSUDA ZENJI ,  KOBAYASHI TAKEJI

IPC: F25D21/00 ,  G05D23/24 ,  F25D21/06

CPC classification number: F25D21/006 ,  G05D23/1909 ,  G05D23/24