摘要:
A shielded electrical connector includes a connector body having contact pieces embedded therein and an “L”-shaped shield plate applied to the connector body with its horizontal and vertical sections lying on the top surface and rear side of the connector body, the shield plate having press-fit portions integrally connected to the lower end of the vertical section. The shield plate has thrust shoulders formed at its horizontal-to-vertical transition for use in pushing the press-fit portions. The electrical connector can be fixed to a printed circuit board by applying a push to the thrust shoulders of the shield plate, thereby pushing the press-fit portions of the shield plate right in the through holes in exact linear-alignment with the through holes. Thus, a strong thrust can be transmitted to each press-fit portion without causing it to be deformed or bent.
摘要:
In the fabrication of semiconductor devices such as active matrix displays, the need to pattern resist masks in photolithography increases the number of steps in the fabrication process and the time required to complete them and consequently represents a substantial cost. This invention provides a method for forming an impurity region in a semiconductor layer 303 by doping an impurity element into the semiconductor layer self-aligningly using as a mask the upper,layer (a second conducting film 306) of a gate electrode formed in two layers. The impurity element is doped into the semiconductor layer through the lower layer of the gate electrode (a first conducting film 305), and through a gate insulating film 304. By this means, an LDD region 313 of a GOLD structure is formed in the semiconductor layer 303.
摘要:
Operating body 12 is supported by a pair of bearing portions in case 1 such that first shaft 13 is pivotable and second shaft 14 is pivotable and vertically movable in a low range. Operating part 12A is provided on plate part 12B of operating body 12 above the central axis of pivot. Self-restoring first push switch 2 is provided to be in contact with the bottom face of the plate part on the side of second shaft 14 on the central axis of pivot. Self-restoring second push switch 3 and third push switch 4 are provided to in contact with the bottom face of the plate part on the side of first shaft 13 in positions symmetrical with respect to the central axis of pivot. This structure realizes a multidirectional operating switch that allows independent operation of a plurality of switches using one operating part.
摘要:
There are provided a structure of a semiconductor device in which low power consumption is realized even in a case where a size of a display region is increased to be a large size screen and a manufacturing method thereof. A gate electrode in a pixel portion is formed as a three layered structure of a material film containing mainly W, a material film containing mainly Al, and a material film containing mainly Ti to reduce a wiring resistance. A wiring is etched using an IPC etching apparatus. The gate electrode has a taper shape and the width of a region which becomes the taper shape is set to be 1 &mgr;m or more.
摘要:
An etching method and a device therefor are provided to detect the etching end point with high accuracy and reproducibility. In an etching method and device, in dry etching, a variation of a self-bias voltage as a time elapses is measured, and a time where a differentiation value becomes 0 when the variation of the self-bias voltage is differentiated is regarded as an end point.
摘要:
The disclosed rotary encoder includes contact substrate 31 and movable contact plate 32. Substrate 31 contains three fan-shaped conductive layers 34A, 34B, and 34C on positions having a same distance from the center of substrate 31. On the other hand, movable contact plate 32 retains three elastic contacts 36A, 36B, 36C, and rotates. The three contacts have continuity with each other and disposed at positions with a same distance from the center of substrate 31, spaced at a radial angle of 120°. When contact plate 32 is rotated, any two out of three elastic contacts 36A, 36B, and 36C consecutively contact with any two out of three conductive layers 34A, 34B, and 34C. Through the continuity, an electric signal is led out from terminals 35A, 35B, and 35C.
摘要:
A multiple-way electronic component includes a box-shaped casing having an upper wall, a lower wall, and an intermediate wall. The upper wall has a circular opening. A first push switch is located on a central area of the lower wall of the casing. Second, third, fourth, and fifth push switches are located on peripheral areas of the lower wall of the casing. A resilient contact arm is supported on the lower wall of the casing. A rotary member is rotatably supported by the intermediate wall of the casing. The rotary member has a polygonal hole. A movable contact retained by the rotary member moves into and out of contact with the resilient contact arm in accordance with rotation of the rotary member. An operation member has a lower end which fits in the polygonal hole in the rotary member. The lower end of the operation member engages the first push switch. The operation member has a cylindrical shaft extending upward from the lower end thereof. The cylindrical shaft extends to an exterior of the casing through the circular opening in the upper wall of the casing. The operation member and the rotary member are rotatable together. The operation member is movable upward and downward relative to the rotary member. A drive member connected to the cylindrical shaft has downward projections engaging the second, third, fourth, and fifth push switches respectively.
摘要:
The process of the present invention is a process for preparing 4,4'-dihydroxydiphenyl sulfone by subjecting phenol, and a sulfonating agent or phenolsulfonic acid to a dehydration reaction in the presence of a solvent, subsequently maintaining the reaction system at a temperature of between 100.degree. to 200.degree. C. and removing the solvent from the reaction system to cause the dehydration reaction to further proceed while allowing 4,4'-dihydroxydiphenyl sulfone to separate out and to subject dissolved 2,4'-dihydroxydiphenyl sulfone formed as a by-product to an isomerization reaction for converting the by-product to 4,4'-dihydroxydiphenyl sulfone, and eventually removing the solvent and the unreacted phenol from the system substantially entirely to complete the isomerization reaction, the process being characterized in that an aromatic sulfonic acid represented by the formula ##STR1## wherein X is a halogen atom, n is 0, 1 or 2, and m is 1 of 2 is caused to be present in the reaction system. 4,4'-Dihydroxydiphenyl sulfone can be produced by the process with a high purity and in a high yield.
摘要:
A process for preparing diarylsulfone, the process comprising reacting chlorosulfonic acid with a mixture of (i) aromatic hydrocarbon represented by the formula ##STR1## wherein one of X and Y is a halogen atom and the other is a halogen atom or a hydrogen atom and (ii) aromatic sulfonic acid represented by the formula ##STR2## wherein X and Y are as defined above.
摘要:
The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity, which is represented by the formula (I) wherein R1 is an optionally substituted cyclic group, R2 is a substituent, R3 is an optionally substituted alkyl group, an acyl group, an optionally substituted hydroxy group, an optionally substituted amino group, a halogen atom, a cyano group or a nitro group, R4 and R5 are each a hydrogen atom, an optionally substituted alkyl group, an acyl group, an optionally substituted hydroxy group, an optionally substituted amino group, a halogen atom, a cyano group or a nitro group, R6 and R6′ are each a hydrogen atom or an alkyl group, and n is an integer of 0-3, or a salt thereof.