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92results about How to "Reduce Capacitive Coupling" patented technology

Shielded planar capacitor

ActiveUS6903918B1Mitigate eddy current lossMinimize eddy current lossSemiconductor/solid-state device detailsFixed capacitor dielectricIsolation layerParasitic capacitance
A shielded planar capacitor structure (202) is discussed, formed within a Faraday cage (210) in an integrated circuit device (200). The capacitor structure (202) reduces parasitic capacitances within the integrated circuit device (200). The capacitor (202) comprises a capacitor stack (102) formed between a first and second metal layers (230,232) of the integrated circuit. The capacitor stack (102) has a first conductive layer formed from a third metal layer (106) disposed between the first and second metal layers (230,232) of the integrated circuit, a dielectric isolation layer (110) disposed upon the first conductive layer (106); and a second conductive layer (112) disposed upon the dielectric isolation layer (110) and overlying the first conductive layer (106). The structure (202) further has a first and second isolation layers (104,114) disposed upon opposite sides of the capacitor stack (102). The Faraday cage (210) is formed between the first and second metal layers (230,232) of the integrated circuit (200), comprising a first and second shield layers (402,414) each having a plurality of mutually electrically conductive spaced apart traces (404). The first and second isolation layers (404,414) and the capacitor stack (102,434) are sandwiched between the first and second shield layers (402,414). Conductive elements (432) are distributed around the periphery of the capacitor stack (102,434) and the first and second isolation layers (404,412). The conductive traces (424) of the first shield layer (402) are connected to the conductive traces (424) of the second shield layer (414) through the conductive elements (432).
Owner:TEXAS INSTR INC

Display panel and display device

The embodiment of the invention discloses a display panel and a display device. The display panel comprises a display module and a fingerprint identification module, wherein the display module comprises a substrate base plate, a plurality of pixel units positioned on one side of the substrate base plate, and first scanning lines extending along the first direction, each pixel unit comprises a pixel drive unit and a light-emitting unit positioned on the side, far away from the substrate base plate, of the pixel drive unit, and the light-emitting unit comprises a metal anode; the fingerprint identification module is used for carrying out fingerprint identification according to light rays reflected to a fingerprint identification unit through a touch main body; the vertical projection of thefirst scanning lines on the substrate base plate and the vertical projection of the metal anode on the substrate base plate have an overlapped area. For the display panel provided by the embodiment ofthe invention, shielding electrodes are arranged between the film layer where the first scanning lines are located and the film layer where drain electrodes are located, the shielding electrodes andthe drain electrodes are insulated, the vertical projection of the shielding electrodes on the substrate base plate and the overlapped area are overlapped, the capacity coupling between the metal anode and the first scanning lines can be reduced, and thus the image display effect is improved.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD

Thin-film-transistor array substrate and forming method thereof

The invention relates to a thin-film-transistor array substrate and a forming method thereof. The array substrate comprises an insulating base, a first metal layer, a grid insulting layer, a noncrystalline silicon layer, a first conducting transparent material layer, a doped noncrystalline silicon layer, a second metal layer, a passivated layer and a second conducting transparent material layer, wherein the first metal layer is positioned above the insulating base, and a first part of the first metal layer forms a TFT grid which is electrically connected with a scanning line; the grid insulating layer is covered above the first metal layer and the insulating base; the noncrystalline silicon layer and the first conducting transparent material layer are both positioned above the grid insulating layer; the doped noncrystalline silicon layer is positioned above the noncrystalline silicon layer and forms a TFT semiconductor layer together with the noncrystalline silicon layer; the second metal layer is positioned above the doped noncrystalline silicon layer and the first conducting transparent material layer, a first part of the second metal layer forms a source electrode and a drain electrode of the TFT, and the source electrode is electrically connected with a data wire; the passivated layer is positioned above the second metal layer and is used as an insulator; the second conducting transparent material layer is positioned above the passivated layer, and a first part of the second conducting transparent material layer forms a pixel electrode connected with the drain electrode; and the first conducting transparent material layer forms part of a common electrode.
Owner:KUSN INFOVISION OPTOELECTRONICS

Inductive coil group and inductive coupling plasma processing device

ActiveCN104684235AReduce Capacitive CouplingDoes not reduce the efficiency of feeding magnetic field energy into the reaction chamberPlasma techniqueCapacitanceCapacitive coupling
The invention discloses a plasma processing device. The plasma processing device comprises an air-tight reaction chamber, wherein the reaction chamber comprises a reaction chamber sidewall and a top insulating material window, and the reaction chamber therein comprises a base for supporting a substrate to be processed; a self-shielding inductive coil group is fixedly arranged above the insulating material window. The plasma processing device is characterized in that the self-shielding inductive coil group comprises a plurality of inductive coils, each inductive coil comprises a flat-plate-shaped intermediate coil, a plurality of intermediate coils are combined to form a shielding ring, the two ends of each intermediate coil respectively comprise an input coil and an output coil, wherein the input coil and the output coil are spirally upward from the two ends of the intermediate coil and are respectively connected to a radio-frequency power supply and a regulating circuit, and downward projections of the input coil and the output coil are located on at least one intermediate coil. By adopting the inductive coil structure disclosed by the invention, the capacity coupling of the inductive coil towards the inside of the reaction chamber can be reduced and the service life of the insulating material window can be improved.
Owner:ADVANCED MICRO FAB EQUIP INC CHINA

MOSFET device with silicon carbide single-side deep L-shaped base region structure and preparation method of MOSFET device

The invention relates to an MOSFET device with a silicon carbide single-side deep L-shaped base region structure and a preparation method of the MOSFET device. The MOSFET device comprises a gate dielectric layer, a base region which comprises a first base region and a second base region located on the two sides of the gate dielectric layer respectively, a current diffusion layer located between the gate dielectric layer and the second base region, a drift layer located on the lower surfaces of the base region and the current diffusion layer, a substrate layer located on the lower surface of the drift layer, a drain electrode located on the lower surface of the substrate layer, a polycrystalline silicon layer positioned on the inner surface of the gate dielectric layer, a gate electrode located on the upper surface of the polycrystalline silicon layer, a first source region located on the upper surface of a preset region of the base region, a second source region located on the upper surface of the rest region of the base region, and a source electrode located on the upper surfaces of the first source region and the second source region. According to the MOSFET device, by changing the structure of the single-side P-type base region, under the condition that the cell area of the device is not enlarged, the electric field aggregation at the groove-gate corner is reduced, and the breakdown voltage of the device is improved.
Owner:XIDIAN UNIV
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