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67results about How to "Prevent electrostatic breakdown" patented technology

Isolated rapid turn-off metal oxide field effect transistor (MOFET) driving circuit

The invention discloses an isolated rapid turn-off metal oxide field effect transistor (MOFET) driving circuit, which comprises a totem-pole output circuit, a transformer T, a negative voltage generation circuit and an MOSFET, wherein an output point of the totem-pole output circuit is connected with the primary dotted terminal of the transformer T through the anode of a blocking capacitor C1; the secondary dotted terminal of the transformer T is sequentially connected in series with a secondary capacitor C2, a diode D4, an electrolytic capacitor C3, a resistor R1 and the MOSFET, and then is connected to the secondary unlike terminal of the transformer T; a voltage stabilizing diode D3 is connected to the two ends of the secondary side of the transformer T; the base of a triode Tr3 is connected with the anode of the secondary capacitor C2, the collector of the triode Tr3 is connected with the cathode of the diode D4, and the emitter of the triode Tr3 is connected with the secondary unlike terminal of the transformer T; a diode D6 is reversely connected in parallel with the two ends of the gate input resistor R1; a voltage stabilizing diode D5 is connected in parallel with the two ends of the electrolytic capacitor C3; and a resistor R2 is connected between the gate and source of the MOSFET. The circuit is applied to places with high requirements on the anti-interference capability of the driving circuit and on rapid turn-off and with large duty ratio variation ranges.
Owner:JIANGSU UNIV

Multifunctional device having vibration function and sound producing function

The invention discloses a multifunctional device having a vibration function and a sound producing function. The multifunctional device comprises a peripheral shell, a vibration system, a magnetic circuit system and an elastic support piece, the magnetic circuit system is supported and fixed through the elastic support piece and is suspended inside the peripheral shell, the vibration system comprises a vibrating diaphragm and a voice coil, the peripheral shell is of metal material, an inner side of the peripheral shell is fixedly provided with a conduction piece, a lead of the voice coil is electrically connected with the conduction piece, the conduction piece is electrically connected with an electrical connecting piece extending to an outer side of the peripheral shell, the electrical connecting piece is conducted with an external circuit, an edge position of the peripheral shell is provided with an injection molding piece of a plastic material which is formed through integral injection molding, the electrical connecting piece is fixed through the injection molding piece, and the injection molding piece does not exceed lateral space of the peripheral shell in a horizontal direction. The multifunctional device provided by the invention can solve in a target manner the problem that adoption of a shell of a metal material easily causes static breakdown, guarantees realization of conduction of internal and external circuits, saves occupied assembling space inside the shell, and improves product performance.
Owner:GOERTEK INC

Anti-static device as well as production method and substrate thereof

The invention discloses an anti-static device as well as a production method and a substrate thereof. The anti-static device comprises a first conducting layer, a first insulating layer, an active layer, an etch-resisting layer, and a second conducting layer, wherein the first insulating layer is formed on the first conducting layer; the active layer is formed on the first insulating layer; the etch-resisting layer is formed on the active layer; the second conducting layer is formed on the etch-resisting layer, and comprises a first part and a second part which are spaced from each other; the first part and the second part of the second conducting layer are electrically connected with the active layer via a first through hole and a second through hole formed in the etch-resisting layer respectively; either the first part or the second part of the second conducting layer is electrically connected with the first conducting layer via a fifth through hole which penetrates the etch-resisting layer and the first insulating layer. As the second conducting layer is electrically connected with the first conducting layer via the independent through hole, the potential difference between the first conducting layer and the second conducting layer can be eliminated promptly, and the phenomenon of electrostatic breakdown in a production process can be avoided effectively.
Owner:BOE TECH GRP CO LTD +1

Laser ignition system with double-security design

The invention discloses a semiconductor laser ignition system with a double security design, which belongs to the field of semiconductor laser ignition systems. The semiconductor laser ignition system comprises a singlechip system, a voltage-controlled current source, a laser, a first optical fiber connector, a second optical fiber connector, a laser detonator joint, a laser detonator, a photoelectric detector, an upper computer, a current-limiting resistor, a current-limiting switch and a normally-closed relay, wherein the singlechip system is connected with the upper computer, the voltage-controlled current source, the current-limiting switch, the normally-closed relay and the photoelectric detector respectively; the current-limiting switch is connected in parallel to two ends of the current-limiting resistor; the normally-closed relay is connected in parallel to two ends of the laser; the laser is connected with the voltage-controlled current source, the current-limiting resistor, the current-limiting switch and the first optical fiber connector respectively; the photoelectric detector is connected with the second optical fiber connector; and the laser detonator joint is connected with the laser detonator. In a security mode, static electricity is prevented from puncturing the laser. In a detection mode, the detection light power output by the laser is kept in a safe range. In an ignition mode, the laser can work in a rated state.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Optical proximity correction method and mask making method

An optical proximity correction method and a mask making method are provided. The optical proximity correction method includes: providing an initial photolithographic mask pattern including a plurality of main patterns; obtaining a main graphic group from a plurality of main graphics based on an electrostatic prone judgement rule, wherein the main graphic group comprises at least two adjacent maingraphics; setting auxiliary graphics between adjacent main graphics in the main graphics group, wherein the auxiliary graphics includes auxiliary main graphics and auxiliary connecting graphics on both sides of the auxiliary main graphics, and the auxiliary connecting graphics connect the auxiliary main graphics and the main graphics; performing OPC correction on the plurality of main graphics and auxiliary graphics to form main correction graphics from the main graphics and auxiliary correction graphics from the auxiliary graphics, wherein the auxiliary correction graphics comprise auxiliarycorrection main graphics corresponding to the auxiliary main graphics and auxiliary correction connection graphics corresponding to the auxiliary connection graphics. The optical proximity correctionmethod avoids the occurrence of graphic missing angles or bridging damage at opposite cusps of adjacent main correction graphics.
Owner:HUAIAN IMAGING DEVICE MFGR CORP

Display device

The present invention prevents electrostatic breakdown attributed to static electricity even in and after a cell cutting step. In a display device which includes a substrate, a plurality of pixels which is formed in a pixel part, a plurality of video lines which applies video voltages to the plurality of pixels, and a video voltage selection circuit which selects the video voltages to be inputted to the pixels and applies the selected video voltages to the predetermined video lines among the plurality of video lines, an electrostatic protective circuit for protecting a pixel part is connected to the plurality of video voltage inputting lines which inputs the video voltages to the video voltage selection circuit, and an electrostatic protective circuit for protecting a peripheral circuit is connected to the lines other than the video voltage inputting lines which is connected to the video voltage selection circuit. The electrostatic protective circuit for protecting the pixel part is connected between the plurality of video voltage inputting lines, and the electrostatic protective circuit for protecting the peripheral circuit is connected between the at least one video voltage inputting line and the line other than the at least one video voltage inputting line, between the plurality of lines other than the video voltage inputting lines, and between the line other than the at least one video voltage inputting line and a reference voltage line to which a reference voltage is applied.
Owner:PANASONIC LIQUID CRYSTAL DISPLAY CO LTD +1

Display Device

The present invention prevents electrostatic breakdown attributed to static electricity even in and after a cell cutting step. In a display device which includes a substrate, a plurality of pixels which is formed in a pixel part, a plurality of video lines which applies video voltages to the plurality of pixels, and a video voltage selection circuit which selects the video voltages to be inputted to the pixels and applies the selected video voltages to the predetermined video lines among the plurality of video lines, an electrostatic protective circuit for protecting a pixel part is connected to the plurality of video voltage inputting lines which inputs the video voltages to the video voltage selection circuit, and an electrostatic protective circuit for protecting a peripheral circuit is connected to the lines other than the video voltage inputting lines which is connected to the video voltage selection circuit. The electrostatic protective circuit for protecting the pixel part is connected between the plurality of video voltage inputting lines, and the electrostatic protective circuit for protecting the peripheral circuit is connected between the at least one video voltage inputting line and the line other than the at least one video voltage inputting line, between the plurality of lines other than the video voltage inputting lines, and between the line other than the at least one video voltage inputting line and a reference voltage line to which a reference voltage is applied.
Owner:PANASONIC LIQUID CRYSTAL DISPLAY CO LTD +1

Array substrate, manufacturing method thereof and display panel

The invention discloses an array substrate, a manufacturing method thereof and a display panel, and belongs to the technical field of displaying. The array substrate comprises a substrate body; the substrate body is provided with a conduction structure, and the conduction structure comprises overlapped grid lines and data lines; the conduction structure is provided with an insulating structure; apublic electrode layer is formed on the insulating structure; first sunken structures right facing the grid lines and second sunken structures right facing the data lines are arranged at the portion,in a non-display area of the substrate body, in the insulating structure, openings of the first sunken structures and the second sunken structures are all away from the substrate body, and the distance between the bottom faces of the first sunken structures and the grid lines is equal to the distance between the bottom faces of the second sunken structures and the data lines. By means of the arraysubstrate, the manufacturing method thereof and the display panel, the problem that a second capacitor is easily subjected to electrostatic breakdown when there are many electrostatic charges accumulated in the second capacitor is solved, and the manufacturing method of the array substrate and the display panel are used for the array substrate.
Owner:BOE TECH GRP CO LTD +1

Clamp for mounting a plurality of laser chips

The invention discloses a clamp for mounting a plurality of laser chips. The clamp comprises a substrate and a spring block, a through hole is formed in the surface of the substrate, and an optical positioning point a is arranged above the right side of the top surface of the substrate. An optical positioning point b is arranged below the right side of the top surface of the substrate, and the optical positioning point a and the optical positioning point b are both L-shaped structures. A limiting block a is arranged above the left side of the through hole, a rubber layer is arranged at the bottom end of the limiting block a, and the rubber layer is made of anti-static rubber. A chamfer is arranged at the right side of the rubber layer, and through the chamfer, the surface of the chip can be prevented from being abraded during the chip clamping process. A limiting block b is arranged at the right side of the limiting block a, a spring block is arranged in the middle at the bottom end ofthe through hole, and the limiting block a, the limiting block b and the spring block are all fixed to the back of the substrate. A protruding block is arranged above the interior of the spring blockand can move up and down in the spring block, and a spring is arranged at the bottom end of the protruding block. The clamp has the advantages of being capable of clamping a plurality of chips, and being accurate in positioning and firm in clamping.
Owner:湖南红鑫通信技术有限责任公司

Anti-static structure of touch screen

The invention discloses an anti-static structure of a touch screen, which comprises a protective cover plate. The bottom of the protective cover plate is fixedly connected with an upper anti-static matching plate. A grounding groove is etched in the part, in contact with the protective cover plate, of the upper anti-static matching plate. A cathode conducting layer, an isolation layer and an anodeconducting layer are sequentially connected into the groove of the upper anti-static matching plate from top to bottom, and a liquid crystal display layer is connected to the bottom of the lower anti-static matching plate. Conductive adhesives are coated in the grounding grooves of the upper anti-static matching plate and the lower anti-static matching plate; a plurality of grounding wire slots are uniformly formed in the edges of the upper anti-static matching plate and the lower anti-static matching plate; according to the invention, the anti-static matching plates are arranged above the cathode conducting layer and below the anode conducting layer. The two-way electrostatic breakdown phenomenon is effectively prevented. The thickness of the electrostatic layer is reduced through the grounding groove type design. Meanwhile, the upper anti-static matching plate and the lower anti-static matching plate protect the conductive layer while static electricity is effectively guided out. The functions are diversified.
Owner:ANHUI BENGBU HUAYI CONDUCTIVE FILM GLASS
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