William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 8097900 | Monolithically integrated light-actived thyristor and method A monolithically integrated light-activated thyristor in an n-p-n-p-n-p sequence consists of a four-layered thyristor structure and an embedded back-biased PN junction structure as a turn-off switching diode. The turn-off switching diode is formed through structured... | 01/17/2012 |
| 7705367 | Pinned photodiode sensor with gate-controlled silicon-controlled rectifier transfer switch and method of formation A pinned photodiode sensor with gate-controlled SCR switch includes a pinned photodiode and a gate-controlled SCR switch. The SCR switch includes a P-type substrate, an Nā doped region, and an N+ doped region formed on the substrate; a P+ doped region formed on th... | 04/27/2010 |
| 7582917 | Monolithically integrated light-activated thyristor and method A monolithically integrated light-activated thyristor in an n-p-n-p-n-p sequence consists of a four-layered thyristor structure and an embedded back-biased PN junction structure as a turn-off switching diode. The turn-off switching diode is formed through structured... | 09/01/2009 |
| 7423298 | Bidirectional photothyristor chip, optical lighting coupler, and solid state relay Two operation channels CH1 and CH2 of a bidirectional photothyristor chip 31 are disposed away from each other so as not to intersect with each other. In between a P-gate diffusion region 23 on the left-hand side and a P-gate diffusion re... | 09/09/2008 |
| 7397066 | Microelectronic imagers with curved image sensors and methods for manufacturing microelectronic imagers Microelectronic imagers with curved image sensors and methods for manufacturing curved image sensors. In one embodiment, a microelectronic imager device includes an imager die having a substrate, a curved microelectronic image sensor having a face with a convex and/... | 07/08/2008 |
| 7397067 | Microdisplay packaging system Some embodiments provide a microdisplay integrated circuit (IC), a substantially transparent protective cover coupled to the microdisplay IC, and a base coupled to the microdisplay IC. Thermal expansion characteristics of the base may be substantially similar to the... | 07/08/2008 |
| 7378687 | Photothyristor device, bidirectional photothyristor device and electronic apparatus In order to provide a photothyristor having high breakdown voltage and less-varying light sensitivity by improving the sensitivity and the breakdown voltage of the device while maintaining the device small, the device includes a silicon substrate, a transistor porti... | 05/27/2008 |
| 7339204 | Backside contact for touchchip A contact is formed within an active region of a substrate at the edge of a die, preferably within the first metallization level in the active region of the substrate. An opening having sloped sidewalls is then etched into the back side of the substrate, exposing a ... | 03/04/2008 |
| 7329942 | Array-type modularized light-emitting diode structure and a method for packaging the structure An array-type modularized light-emitting diode structure and a method for packaging the structure. The array-type modularized light-emitting diode structure includes a lower substrate and an upper substrate fixed on the lower substrate. A material with high heat con... | 02/12/2008 |
| 7321110 | Solid state image pickup device and camera An solid state image pickup device including a plurality of photoelectric conversion regions (PD1, PD2) for generating carriers by photoelectric conversions to accumulate the generated carriers, an amplifying unit for amplifying the carriers, being com... | 01/22/2008 |
| 7320930 | Multi-elevation singulation of device laminates in wafer scale and substrate processing Wafer scale and substrate processing device singulation methods, and devices made by the methods, for singulation of discrete devices from a processed wafer or laminated structures, involves formation of separation scribes or saw cuts at multiple elevations in inter... | 01/22/2008 |
| 7292382 | Light control unit A light control unit comprises: a substrate; an insulating film; a first transistor; a reflecting film formed on the insulating film; a light modulating film formed on the reflecting film; a plurality of pairs of electrodes arranged two-dimensionally on the light mo... | 11/06/2007 |
| 7282719 | Image pickup apparatus and radiation image pickup apparatus A reset method of a conversion element is improved, and the simplification of wiring and the improvement of an open area ratio of the conversion element by means of an image pickup apparatus including a plurality of pixels arranged on an insulating substrate, each o... | 10/16/2007 |
| 7279764 | Silicon-based resonant cavity photodiode for image sensors An imager with pixels having a resonant-cavity photodiode. The resonant cavity photodiode increases absorption of light having long wavelengths. A trench is formed for the photodiode and reflective film is grown on the bottom of the trench. The reflective film refle... | 10/09/2007 |
| 7265735 | Self scanning flat display A self-scanning flat display having a light active matrix in the form of a set of periodic lines which include light-reflecting, light-transparent, or light-emitting elements. These elements are controlled by current or a charge generated by a scan raster device. Th... | 09/04/2007 |
| 7250931 | Light emitting apparatus and method of driving same In a light emitting apparatus, all pixels are fabricated using monochrome light-emitting materials. Since the light transmittances of color filters or color conversion layers are not uniform among red (R), green (G), and blue (B), exact white color cannot be display... | 07/31/2007 |
| 7238968 | Semiconductor device and method of making the same The present invention presents a semiconductor device (10) which is adapted to a solar cell, and in which a semiconductor element (1) is produced by forming one flat surface (2) on a spherical or substantially spherical silicon single crystal ( | 07/03/2007 |
| 7235831 | Light-receiving element and photoelectric conversion device In order to reduce the capacitance of a light-receiving element, the present invention provides a light-receiving element which includes a first semiconductor region of the first conductivity type, a second semiconductor region of the second conductivity type, provi... | 06/26/2007 |
| 7224002 | Silicon on insulator read-write non-volatile memory comprising lateral thyristor and trapping layer Disclosed herein is an improved thyristor-based memory cell. In one embodiment, the cell is formed in a floating substrate using Silicon-On-Insulator (SOI) technology. The cell preferably incorporates a lateral thyristor formed entirely in the floating substrate, an... | 05/29/2007 |
| 7218298 | Light emitting device This invention provides a light emitting device in which each pixel has three sub-pixels for emitting different colors, comprising a signal correction circuit for correcting gradation information of each signal depending on the light emitting index of each sub-pixel... | 05/15/2007 |
| 7214971 | Semiconductor light-receiving device A semiconductor light-receiving device has a substrate including upper, middle and lower regions in its front side. A p-type layer on the lower region has a top surface including a portion on a level with the middle region. An electrode covers at least part of the b... | 05/08/2007 |
| 7202511 | Near-infrared visible light photon counter Electromagnetic energy is detected with high efficiency in the spectral range having wavelengths of about 1ā2 microns by coupling an absorber layer having high quantum efficiency in the spectral range having wavelengths of about 1ā2 microns to an intrinsic semic... | 04/10/2007 |
| 7187020 | Solid-state imaging device, method of driving same, and camera apparatus A solid-state imaging device of a three-transistor pixel configuration having no selection transistor has a problem of a non-selection hot carrier white point, which is specific to this apparatus. A bias current during a non-reading period of pixels is made to flow ... | 03/06/2007 |
| 7183582 | Electro-optical device and method of manufacturing the same, element driving device and method of manufacturing the same, element substrate, and electronic apparatus In a circuit to drive driven elements such, as electro-optical elements, an electro-optical device has an element layer, a wire-forming layer, and an electronic component layer in order to suppress variation in characteristics of active elements. The element layer h... | 02/27/2007 |
| 7180110 | Organic photoelectric conversion element The organic photoelectric conversion element according to the invention has enhanced the light-absorbing property by incorporating two or more kinds of electron donating organic materials 4a and 4b in the photoelectric conversion region | 02/20/2007 |
| 7157747 | Bidirectional photothyristor chip, light-fired coupler and solid state relay A channel isolation region 42 is formed over the entire width of an N-type silicon substrate 41, and photothyristors, in each of which an anode diffusion region 43, a P-gate diffusion region 44, a cathode diffusion region 45 are fo... | 01/02/2007 |
| 7141826 | Multi-wavelength light receiving element and method of fabricating same Disclosed is a multi-wavelength light receiving element. The multi-wavelength light receiving element includes a first type substrate. A first intrinsic layer is positioned on the first type substrate. A heavily-doped second-type buried layer is positioned on the fi... | 11/28/2006 |
| 7133022 | Apparatus for image projection The invention is directed to a solid-state projection device incorporating a light source, modulator, and control circuitry on a single chip. For example, projection device may include several sets of VCSELs, each associated with a set of MEMs mirrors and coupled to... | 11/07/2006 |
| 7122840 | Image sensor with optical guard ring and fabrication method thereof An image sensor device and fabrication method thereof wherein a substrate having at least one shallow trench isolation structure therein is provided. At least one photosensor and at least one light emitting element, e.g., such as MOS or LED, are formed in the substr... | 10/17/2006 |
| 7115925 | Image sensor and pixel having an optimized floating diffusion An active pixel includes a a photosensitive element formed in a semiconductor substrate. A transfer transistor is formed between the photosensitive element and a floating diffusion and selectively operative to transfer a signal from the photosensitive element to the... | 10/03/2006 |
| 7102185 | Lightshield architecture for interline transfer image sensors An interline transfer type image sensing device that can be operated at high speed and with low image smear is described. The device incorporates a refractory metal layer which is used for both a light shield over the vertical charge transfer region and as a wiring ... | 09/05/2006 |
| 7078739 | Thyristor-based memory and its method of operation A thyristor-based memory may comprise a thyristor accessible via an access transistor. A temperature dependent bias may be applied to at least one of a supporting substrate and an electrode capacitively-coupled to a base region of the thyristor. The voltage level of... | 07/18/2006 |
| 7070207 | Substrate for mounting IC chip, multilayerd printed circuit board, and device for optical communication The present invention provides a device for optical communication comprising: a substrate for mounting an IC chip having a light emitting element and a light receiving element mounted at predetermined positions; and a multilayered printed circuit board having an opt... | 07/04/2006 |
| 7057214 | Light-activated semiconductor switches Semiconductor switches, such as thyristors, may be light activated by introducing the light into the switch via a groove having a sloped surface to receive the triggering light. The use of a sloped surface increases the surface path length between points of differen... | 06/06/2006 |
| 7038640 | Self-emission display device and method for driving the same A self emission display device for controlling a lit-up/non-lit-up state of a light emitting element by controlling a current flowing therethrough comprises: a plurality of light emitting elements arrayed in a matrix; and a plurality of SCRs for controlling a curren... | 05/02/2006 |
| 7015120 | Method of fabricating semiconductor devices employing at least one modulation doped quantum well structure and one or more etch stop layers for accurate contact formation A method of fabricating a semiconductor device includes the steps of forming (or providing) a series of layers formed on a substrate, the layers including a first plurality of layers including an n-type ohmic contact layer, a p-type modulation doped quantum well str... | 03/21/2006 |
| 7012274 | Modulation doped thyristor and complementary transistors combination for a monolithic optoelectronic integrated circuit A thyristor and family of high speed transistors and optoelectronic devices are obtained on a monolithic substrate (149) with an epitaxial layer structure comprised of two modulation doped transistor structures inverted with respect to each other. The transis... | 03/14/2006 |
| 7002188 | Laser-gated and pumped multi-layer semiconductor power switch with reduced forward losses A laser-activated semiconductor switching device includes a semiconductor assembly including a multi-layer semiconductor structure having a first principal surface, and a laser assembly. The laser assembly includes at least one laser device and is directly connected... | 02/21/2006 |
| 6995407 | Photonic digital-to-analog converter employing a plurality of heterojunction thyristor devices A photonic digital-to-analog converter employing a plurality of heterojunction thyristor devices that are configured to convert a digital word encoded by a parallel digital optical signal (e.g., a plurality of synchronous optical bits) to an output analog electrical... | 02/07/2006 |
| 6963087 | Pulsed bistable bidirectional electronic switch The invention concerns a pulsed bistable bidirectional electronic switch comprising a monolithic semiconductor circuit formed from a substrate (1) whereof the rear surface (A2) is coated with a metallization connected to earth. Said circuit comprises a... | 11/08/2005 |