Color Filter Patents (Class 438/70)
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Publication number: 20130134536Abstract: A solid-state imaging device in which a plurality of pixels are two-dimensionally arranged, the solid-state imaging device includes: a silicon layer; a plurality of photodiodes which are formed in the silicon layer to correspond to the pixels and generate signal charges by performing photoelectric conversion on incident light; and a plurality of color filters formed above the silicon layer to correspond to the plurality of the pixels, wherein a protrusion is formed in a region on a side of the silicon layer between adjacent ones of the color filters, the protrusion having a refractive index lower than refractive indices of the adjacent ones of the color filters and, each of the color filters is in contact with the adjacent ones of the color filters, above the protrusion.Type: ApplicationFiled: November 13, 2012Publication date: May 30, 2013Applicant: PANASONIC CORPORATIONInventors: PANASONIC CORPORATION, Ikuo Terauchi
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Publication number: 20130134537Abstract: Disclosed herein is a solid-state imaging device including a plurality of pixels arranged two-dimensionally, wherein the pixels each have at least a planarizing film formed on the upper side of a photoelectric conversion element, a filter formed on the upper side of the planarizing film, and a microlens formed on the upper side of the filter. The filters of a part of the pixels are each a color filter permitting transmission therethrough of light of a predetermined color component, whereas the filters of another part of the pixels are each a white filter permitting transmission therethrough of light in the whole visible spectral range. The refractive indices of the white filter, the microlens and the planarizing film are in the following relationship: (Refractive index of white filter)?(Refractive index of microlens)>(Refractive index of planarizing film).Type: ApplicationFiled: November 16, 2012Publication date: May 30, 2013Applicant: Sony CorporationInventor: Sony Corporation
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Publication number: 20130130428Abstract: A spectrometer for use with a desired wavelength range includes an array of filters. Each filter outputs at least two non-contiguous wavelength peaks within the desired wavelength range. The array of filters is spectrally diverse over the desired wavelength range, and each filter in the array of filters outputs a spectrum of a first resolution. An array of detectors has a detector for receiving an output of a corresponding filter. A processor receives signals from each detector, and outputs a reconstructed spectrum having a second resolution, the second resolution being higher than any of the first resolution of each filter. Filters and detectors may be arranged into a plurality of imaging units, each imaging unit including first and second filters and first and second photosensing regions. A processor receives signals from each imaging unit, and generates a reconstructed spatial image comprised of discrete spatial units corresponding to each imaging unit.Type: ApplicationFiled: January 9, 2013Publication date: May 23, 2013Inventors: Robert D. TeKOLSTE, Alan D. KATHMAN
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Publication number: 20130130429Abstract: An image sensor comprises a substrate of a first conductivity type. First and second pixels are arrayed over the substrate. A potential barrier is formed in a region of the substrate corresponding to the first pixel but not in a region of the substrate corresponding to the second pixel. The second pixel is responsive to a color having a wavelength longer than the color to which the first pixel is responsive. The potential barrier is doped with dopants by a high energy ion implantation dopants or by an ion implantation or diffusion during epitaxial growth of the P-type epitaxial layer.Type: ApplicationFiled: January 10, 2013Publication date: May 23, 2013Applicant: Intellectual Ventures II LLCInventor: Intellectual Ventures II LLC
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Publication number: 20130122634Abstract: A fabrication method for solid-state imaging devices includes having circuitry formed on a substrate, forming a lower electrode layer on the circuitry, patterning the lower electrode layer to separate pixel-wise into a set of segments, and forming a compound-semiconductor thin film of charcopyrite structure over a whole area of element regions. A resist layer is applied on the compound-semiconductor thin film to pixel-wise pattern in accordance with the lower electrode layer as a base separated into the set of segments, and an ion doping is applied over a whole area of element regions, forming element separating regions in the compound-semiconductor thin film. The method includes removing the resist layer for exposure of surfaces of a set of compound-semiconductor thin films separated pixel-wise by the element separating regions. A transparent electrode layer is formed in a planarizing manner over a whole area of element regions.Type: ApplicationFiled: December 17, 2012Publication date: May 16, 2013Applicant: ROHM CO., LTD.Inventor: Rohm Co., Ltd.
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Patent number: 8440493Abstract: A solid-state imaging apparatus and a manufacturing method of a solid-state imaging apparatus are provided. Metal wirings 102 and 103 are formed in an effective pixel region A and out-of effective pixel region B of a semiconductor substrate 100, and an etch stop layer 118 is formed over the metal wirings 102 and 103. Moreover, an insulating film 119 is formed on the etch stop layer 118, and another metal wiring 104 is formed on the insulating film 119 in the out-of effective pixel region B. Next, the insulating film 119 in the effective pixel region A is removed by using the etch stop layer 118, and interlayer lenses 105 are formed in the step in the effective pixel region A where the insulating film 119 is removed.Type: GrantFiled: April 1, 2009Date of Patent: May 14, 2013Assignee: Canon Kabushiki KaishaInventor: Takehiro Toyoda
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Patent number: 8441052Abstract: An image sensor pixel array includes a photoelectric conversion unit that has a second region in a substrate and vertically below a gate electrode of a transistor. A first region under a top surface of the substrate and above the second region supports a channel of the transistor. A color filter transmits a light via a light guide, the gate electrode and the first region to generate carriers collected by the second region. The gate electrode may be made thinner by a wet etch. An etchant for thinning the gate electrode may be introduced through an opening in an insulating film on the substrate. The light guide may be formed in the opening after the thinning. An anti-reflection stack may be formed at a bottom of the opening prior to forming the light guide.Type: GrantFiled: October 18, 2010Date of Patent: May 14, 2013Inventor: Hiok Nam Tay
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Patent number: 8441600Abstract: A display panel is disclosed. The display panel includes a data line, a scan line, a first switch connected to a first voltage, a second switch connected to a second voltage, and a pixel.Type: GrantFiled: June 17, 2011Date of Patent: May 14, 2013Assignee: Himax Technologies LimitedInventor: Yu-Wen Chiou
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Publication number: 20130112256Abstract: A photovoltaic device operable to convert light to electricity, comprising a substrate, one or more structures essentially perpendicular to the substrate, and a wavelength-selective layer disposed on the substrate, wherein the structures comprise a crystalline semiconductor material.Type: ApplicationFiled: November 3, 2011Publication date: May 9, 2013Inventors: Young-June YU, Munib WOBER
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Publication number: 20130113061Abstract: Provided is a semiconductor image sensor device. The image sensor device includes a substrate. The image sensor device includes a first pixel and a second pixel disposed in the substrate. The first and second pixels are neighboring pixels. The image sensor device includes an isolation structure disposed in the substrate and between the first and second pixels. The image sensor device includes a doped isolation device disposed in the substrate and between the first and second pixels. The doped isolation device surrounds the isolation structure in a conformal manner.Type: ApplicationFiled: November 7, 2011Publication date: May 9, 2013Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Chih-Yu Lai, Yeur-Luen Tu, Chih-Hui Huang, Cheng-Ta Wu, Chia-Shiung Tsai, Luan C. Tran
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Publication number: 20130113964Abstract: According to one embodiment, a pixel detecting light having the longest wavelength in a picture element includes a protective film which is disposed on a photodiode at a surface side facing a light incident surface of a semiconductor substrate and a first diffraction grating portion which is disposed on the protective film and where columnar holes penetrating in a thickness direction are two-dimensionally arrayed. Diameter and array period of the holes are selected so that the first diffraction grating portion reflects light transmitting through a filter disposed on the pixel.Type: ApplicationFiled: August 29, 2012Publication date: May 9, 2013Applicant: Kabushiki Kaisha ToshibaInventors: Hiroki SASAKI, Koichi KOKUBUN
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Publication number: 20130105926Abstract: A manufacturing method of a BSI image sensor includes providing a substrate having a plurality of photo-sensing elements and a plurality of multilevel interconnects formed on a first side of the substrate; forming a redistribution layer (RDL) and a first insulating layer covering the RDL on the front side of the substrate; providing a carrier wafer formed on the front side of the substrate; forming a color filter array (CFA) on a second side of the substrate, the second side being opposite to the first side; removing the carrier wafer; and forming a first opening in the first insulating layer for exposing the RDL.Type: ApplicationFiled: October 26, 2011Publication date: May 2, 2013Inventor: Ching-Hung Kao
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Patent number: 8431425Abstract: A method for fabricating an image sensor is provided. A substrate is provided, and then a plurality of photoresist patterns is formed on the substrate. The photoresist patterns are arranged in a first array and defined by a plurality of photomask patterns arranged as a photomask pattern array, wherein a top view of each photoresist pattern has a substantially square shape and a distance between two neighboring photoresist patterns decreases from a center of the first array toward an edge of the first array. Besides, each photomask pattern includes a transparent portion and an opaque portion, wherein an area proportion of the transparent portion included in a photomask pattern increases from the center toward the edge of the photomask pattern array. Then, a thermal reflow step is performed to convert the photoresist patterns into a plurality of microlenses arranged in a second array.Type: GrantFiled: May 11, 2012Date of Patent: April 30, 2013Assignee: United Microelectronics Corp.Inventor: Cheng-Yu Hsieh
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Publication number: 20130100324Abstract: Disclosed herein is a method of manufacturing a solid-state image pickup element having a lens provided above a light receiving portion. The manufacturing method includes: forming a lens base material layer composing the lens; forming an intermediate film having a thermal expansion coefficient larger than that of a resist on the lens base material layer; forming the resist in contact with the intermediate film; forming the resist into a lens shape by thermal reflow; and transferring the lens shape of the resist to the lens base material layer by etching, thereby forming the lens.Type: ApplicationFiled: October 11, 2012Publication date: April 25, 2013Applicant: SONY CORPORATIONInventor: Sony Corporation
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Publication number: 20130102106Abstract: An image sensor module includes a transparent substrate having recesses defined in a lower face thereof. A light concentration member includes transparent light concentration parts each of which are disposed in a corresponding one of the recesses. Color filters are disposed over each of the light concentration parts and photo diode units having photo diodes are disposed over each of the color filters. An insulation member covers the photo diode units and input/output terminals disposed over the insulation member are each electrically connected to a corresponding photo diode unit.Type: ApplicationFiled: December 13, 2012Publication date: April 25, 2013Applicant: SK HYNIX INC.Inventor: SK HYNIX INC.
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Patent number: 8426238Abstract: A method for manufacturing a solid-state image pickup device is provided. A first pixel isolation member is formed in a semiconductor substrate including pixels by implanting impurity ions in a first region of the substrate to separate pixels in the first region from each other when viewed from a surface of the substrate. A second pixel isolation member is also formed in the substrate by forming a trench in a second region of the substrate different from the first region to separate pixels in the second region from each other, and filling the trench with an electroconductive material harder to polish by CMP than the substrate. The thickness of the substrate is reduced by CMP on a rear surface of the substrate using the second pixel isolation member as a stopper.Type: GrantFiled: September 28, 2010Date of Patent: April 23, 2013Assignee: Sony CorporationInventors: Kenichi Nishizawa, Hiroshi Takahashi
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Publication number: 20130093036Abstract: Provided is a method of fabricating a backside illuminated image sensor that includes providing a device substrate having a frontside and a backside, where pixels are formed at the frontside and an interconnect structure is formed over pixels, forming a re-distribution layer (RDL) over the interconnect structure, bonding a first glass substrate to the RDL, thinning and processing the device substrate from the backside, bonding a second glass substrate to the backside, removing the first glass substrate, and reusing the first glass substrate for fabricating another backside-illuminated image sensor.Type: ApplicationFiled: October 4, 2012Publication date: April 18, 2013Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Kuan-Chieh Huang, Dun-Nian Yaung, Chih-Jen Wu, Chen-Ming Huang
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Publication number: 20130093034Abstract: According to one embodiment, there is provided a solid-state imaging device including a first photoelectric conversion layer and a color filter. The color filter includes a multi-layer interference filter and a guided mode resonant grating. The guided mode resonant grating includes a plurality of diffraction gratings and a plurality of inter-grating regions. The plurality of diffraction gratings are formed of a material having a first index of refraction and periodically arrayed at least one-dimensionally. The plurality of inter-grating regions are arranged between at least the plurality of diffraction gratings. Each of the plurality of inter-grating regions includes an insulating film region and an air gap region. The insulating film region is formed of a material having a second index of refraction lower than the first index of refraction.Type: ApplicationFiled: August 31, 2012Publication date: April 18, 2013Applicant: Kabushiki Kaisha ToshibaInventors: Koichi KOKUBUN, Yusaku Konno
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Publication number: 20130095594Abstract: A solid state imaging device includes a circuit unit formed on a substrate and a photoelectric conversion unit. The photoelectric conversion circuit includes a lower electrode layer placed on the circuit unit, a compound semiconductor thin film of chalcopyrite structure which is placed on the lower electrode layer and functions as an optical absorption layer, and an optical transparent electrode layer placed on the compound semiconductor thin film. The lower electrode layer, the compound semiconductor thin film, and the optical transparent electrode layer are laminated one after another on the circuit unit.Type: ApplicationFiled: October 4, 2012Publication date: April 18, 2013Applicant: Rohm Co., Ltd.Inventor: Rohm Co., Ltd
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Patent number: 8415193Abstract: A method for manufacturing a solid state image forming device according to an embodiment includes forming a transparent resin layer 20 on a semiconductor substrate 11, having a plurality of photodiode layers 12 formed thereon in a lattice, through R, G, and B color filters that are formed according to a Bayer arrangement; forming a plurality of first microlens mother dies 23 on the transparent resin layer 20 at the positions corresponding to the green color filters G in such a manner that the outer peripheries thereof are separated from each other; forming a plurality of second microlens mother dies 24 in such a manner that they are formed to fill the gap between the first microlens mother dies 23 and the outer peripheries thereof are separated from each other; and etching the transparent resin layer 20 with the plurality of first microlens mother dies 23 and the plurality of second microlens mother dies 24 being used as masks.Type: GrantFiled: July 21, 2010Date of Patent: April 9, 2013Assignee: Kabushiki Kaisha ToshibaInventor: Hajime Ootake
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Patent number: 8410532Abstract: The present invention provides a solid-state imaging device comprising: a semiconductor substrate having a pixel region and a peripheral circuit region; a multilayer wiring layer including layers of wiring and an interlayer film interposed therebetween, and disposed above the semiconductor substrate to cover the pixel region and the peripheral circuit region except areas above the photoelectric conversion elements; a waveguide member filling the areas above the photoelectric conversion elements (waveguides) and covering the multilayer wiring layer at least within the pixel region; and an optical structure (composed of a color filter material and a lens material) disposed above the waveguide member within the pixel region, wherein a groove is formed by removing a portion of the waveguide member from an area within the pixel region that is in a border between the pixel region and the peripheral circuit region.Type: GrantFiled: June 16, 2011Date of Patent: April 2, 2013Assignee: Panasonic CorporaitonInventors: Shoichiro Tsuji, Kazuhiro Yamashita
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Patent number: 8409899Abstract: A plurality of image sensor structures and a plurality of methods for fabricating the plurality of image sensor structures provide for inhibited cracking and delamination of a lens capping layer with respect to a planarizing layer within the plurality of image sensor structures. Particular image sensor structures and related methods include at least one dummy lens layer of different dimensions than active lens layer located over a circuitry portion of a substrate within the particular image sensor structures. Additional particular image sensor structures include at least one of an aperture within the planarizing layer and a sloped endwall of the planarizing layer located over a circuitry portion within the particular image sensor structures.Type: GrantFiled: February 11, 2011Date of Patent: April 2, 2013Assignee: Intnernational Business Machines CorporationInventors: Jeffrey P. Gambino, Mark D. Jaffe, Robert K. Leidy, Charles F. Musante, Richard J. Rassel
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Publication number: 20130069188Abstract: Embodiments of the invention relate to a camera assembly including a rear-facing camera and a front-facing camera operatively coupled together (e.g., bonded, stacked on a common substrate). In some embodiments of the invention, a system having an array of frontside illuminated (FSI) imaging pixels is bonded to a system having an array of backside illuminated (BSI) imaging pixels, creating a camera assembly with a minimal size (e.g., a reduced thickness compared to prior art solutions). An FSI image sensor wafer may be used as a handle wafer for a BSI image sensor wafer when it is thinned, thereby decreasing the thickness of the overall camera module. According to other embodiments of the invention, two package dies, one a BSI image sensor, the other an FSI image sensor, are stacked on a common substrate such as a printed circuit board, and are operatively coupled together via redistribution layers.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: OMNIVISION TECHNOLOGIES, INC.Inventors: Gang Chen, Ashish Shah, Duli Mao, Hsin-Chih Tai, Howard E. Rhodes
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Publication number: 20130069190Abstract: An image sensor comprises a substrate, a plurality of photoelectric transducer devices, an interconnect structure, at least one dielectric isolator and a back-side alignment mark. The substrate has a front-side surface and a back-side surface opposite to the front-side surface. The interconnect structure is disposed on the front-side surface. The photoelectric transducer devices are formed on the front-side surface. The dielectric isolator extends downwards into the substrate from the back-side surface in order to isolate the photoelectric transducer devices. The back-side alignment mark extends downwards into the substrate from the back-side surface and references to a front-side alignment mark previously formed on the front-side surface.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: UNITED MICROELECTRONICS CORPORATIONInventors: Ching-Hung KAO, Hsin-Ping Wu
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Publication number: 20130069189Abstract: A bonding pad structure is used in an integrated circuit device. The integrated circuit device includes a semiconductor substrate with a first surface and a second surface. The bonding pad structure includes a dielectric layer, a conductor structure, a pad opening and an isolation trench. The dielectric layer is formed on the second surface of the semiconductor substrate. The conductor structure is disposed within the dielectric layer. The pad opening is formed in the first surface of the semiconductor substrate. The pad opening runs through the semiconductor substrate and a part of the dielectric layer, so that the conductor structure is exposed. The isolation trench has an opening in the first surface of the semiconductor substrate. The isolation trench runs through the semiconductor substrate and a part of the dielectric layer, and the isolation trench is disposed around the pad opening.Type: ApplicationFiled: September 20, 2011Publication date: March 21, 2013Applicant: UNITED MICROELECTRONICS CORPORATIONInventor: Ching-Hung Kao
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Patent number: 8399282Abstract: A method for forming a pad in a wafer with a three-dimensional stacking structure is disclosed. The method includes bonding a device wafer that includes an Si substrate and a handling wafer, thinning a back side of the Si substrate, depositing an anti-reflective layer on the thinned back side of the Si substrate, depositing a back side dielectric layer on the anti-reflective layer, forming vias that pass through the anti-reflective layer and the back side dielectric layer and contact back sides of super contacts which are formed on the Si substrate, and forming a pad on the back side dielectric layer such that the pad is electrically connected to the vias.Type: GrantFiled: February 14, 2011Date of Patent: March 19, 2013Assignee: Siliconfile Technologies Inc.Inventors: Heui Gyun Ahn, Se Jung Oh, In Gyun Jeon, Jun Ho Won
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Publication number: 20130051521Abstract: A detector device is described comprising an x-ray detector structure having a detection surface defining at least one separately addressable region for detecting incident x-ray radiation intensity thereon, wherein the separately addressable region is divided into a plurality of sub-regions provided on the detection surface each provided with a filter layer on the detection surface, the filter layers of a given separately addressable region comprising discrete and different materials with discrete defined and spectroscopically spaced x-ray absorption edges. A method of device manufacture, and an apparatus and method for the inspection and characterisation of materials employing such a detector device, are also described.Type: ApplicationFiled: March 11, 2011Publication date: February 28, 2013Inventors: Arnab Basu, Ian Radley, Max Robinson
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Patent number: 8384172Abstract: An image sensor includes at least one photoelectric conversion device formed in a silicon substrate, at least one lens formed on one side of the photoelectric conversion device and configured to collect light, a dielectric layer formed on the other side of the photoelectric conversion device and a reflective pattern formed on the dielectric layer. The reflective pattern serves as an electrical circuit interconnection and is configured to reflect the light passing through the dielectric layer such that the light is absorbed to the silicon substrate again.Type: GrantFiled: December 30, 2009Date of Patent: February 26, 2013Assignee: Samsung Electronics Co., Ltd.Inventor: Yun-Ki Lee
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Patent number: 8383444Abstract: A method is provided for determining a color using a CMOS image sensor. The CMOS image sensor includes an n-type substrate and a p-type epitaxy layer overlying the n-type substrate. The method includes applying a first voltage on the n-type substrate and obtaining a first output, which is associated with the first voltage. The method further includes applying a second voltage on the n-type substrate and obtaining a second output, which is associated with the second voltage. The method additionally includes applying a third voltage on the n-type substrate and obtaining a third output, which is associated with the third voltage. The method also includes providing a plurality of weighting factors and determining the color based on the plurality of weighting factors, the first output, the second output, and the third output.Type: GrantFiled: November 23, 2010Date of Patent: February 26, 2013Assignee: Semiconductor Manufacturing International (Shanghai) CorporationInventors: Hong Zhu, Jim Yang
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Patent number: 8383447Abstract: A reverse image sensor module includes first and second semiconductor chips, and first and second insulation layers. The first semiconductor chip includes a first semiconductor chip body having a first surface and a second surface facing away from the first surface, photodiodes disposed on the first surface, and a wiring layer disposed on the second surface and having wiring lines electrically connected to the photodiodes and bonding pads electrically connected to the wiring lines. The second semiconductor chip includes a second semiconductor chip body having a third surface facing the wiring layer, and through-electrodes electrically connected to the bonding pads and passing through the second semiconductor chip body. The first insulation layer is disposed on the wiring layer, and the second insulation layer is disposed on the third surface of the second semiconductor chip body facing the first insulation layer and is joined to the first insulation layer.Type: GrantFiled: March 6, 2012Date of Patent: February 26, 2013Assignee: Hynix Semiconductor Inc.Inventor: Seung Taek Yang
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Patent number: 8384175Abstract: Certain embodiments provide a method for manufacturing a solid state imaging device, the method including: forming a plurality of first semispherical lens bodies; forming a second transparent resin layer; and forming a second lens body. The plurality of first semispherical lens bodies are respectively formed on a plurality of photodiode layers formed on a principal surface of a semiconductor substrate. The second transparent resin layer is a resin layer having an etching rate higher than that of the first lens body, and is formed so that the semiconductor substrate including the plurality of first lens bodies is covered with the second transparent resin layer. The second lens bodies are formed on a surface except the top part of each of the first lens bodies by etching an entire surface of the second transparent resin layer until top parts of the first lens bodies are exposed.Type: GrantFiled: September 6, 2011Date of Patent: February 26, 2013Assignee: Kabushiki Kaisha ToshibaInventor: Hajime Ootake
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Publication number: 20130040416Abstract: A method for making the image sensor structure, for avoiding or mitigating lens shading effect. The image sensor structure includes a substrate, a sensor array disposed at the surface of the substrate, a dielectric layer covering the sensor array, wherein the dielectric layer includes a top surface having a dishing structure, an under layer filled into the dishing structure and having a refraction index greater than that of the dielectric layer, a filter array disposed on the under layer corresponding to the sensor array, and a microlens array disposed above the filter array. A top layer may be additionally disposed to cover the filter array and the microlens array is disposed on the top layer.Type: ApplicationFiled: October 17, 2012Publication date: February 14, 2013Applicant: UNITED MICROELECTRONICS CORP.Inventor: UNITED MICROELECTRONICS CORP.
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Publication number: 20130040415Abstract: A process of forming an isolation region that defines an active region on a semiconductor wafer, a process of forming a photoelectric conversion element in the active region defined by the isolation region, and a process of forming a micro lens over the photoelectric conversion element are provided. Alignment in the process of forming the photoelectric conversion element and alignment in the process of forming the micro lens are performed using an alignment mark formed in the process of forming the isolation region.Type: ApplicationFiled: August 8, 2012Publication date: February 14, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Mikio Arakawa, Masataka Ito
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Publication number: 20130034927Abstract: An image sensor pixel that includes a photoelectric conversion unit supported by a substrate and an insulator adjacent to the substrate. The pixel includes a cascaded light guide that is located within an opening of the insulator and extends above the insulator such that a portion of the cascaded light guide has an air interface. The air interface improves the internal reflection of the cascaded light guide. The cascaded light guide may include a self-aligned color filter having air-gaps between adjacent color filters. These characteristics of the light guide eliminate the need for a microlens. Additionally, an anti-reflection stack is interposed between the substrate and the light guide to reduce backward reflection from the image sensor. Two pixels of having different color filters may have a difference in the thickness of an anti-reflection film within the anti-reflection stack.Type: ApplicationFiled: October 11, 2012Publication date: February 7, 2013Inventors: Hiok-Nam TAY, Thanh-Trung DO
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Patent number: 8368105Abstract: The present invention relates to a manufacturing method of an integrated circuit (IC) comprising a substrate (10) comprising a pixelated element (12) and a light path (38) to the pixelated element (12). The IC comprises a first dielectric layer (14) covering the substrate (10) but not the pixilated element (12), a first metal layer (16) covering a part of the first dielectric layer (14), a second dielectric layer (18) covering a further part of first dielectric layer (14), a second metal layer (20) covering a part of the second dielectric layer (18) and extending over the pixelated element (12) and a part of the first metal layer (16), the first metal layer (16) and the second metal layer (20) forming an air-filled light path (38) to the pixelated element (12).Type: GrantFiled: March 9, 2009Date of Patent: February 5, 2013Assignee: NXP, B.V.Inventors: Viet Nguyen Hoang, Radu Surdeanu, Benoit Bataillou
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Patent number: 8367455Abstract: A fabricating method of an image sensor includes the steps of: providing a substrate; forming sensing elements on the substrate; forming microlenses on the sensing elements; filling a stuffed material on the microlenses, and air regions are formed in the stuffed material; and forming optical filters on the stuffed material.Type: GrantFiled: May 30, 2010Date of Patent: February 5, 2013Assignee: Himax Imaging, Inc.Inventors: Yu-Ping Hu, Chih-Wei Hsiung, Fang-Ming Huang, Chia-Chi Huang, Chung-Wei Chang
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Publication number: 20130027577Abstract: An image sensor may be provided in which a pixel array includes imaging pixels and application-specific pixels. The application-specific pixels may include depth-sensing pixels, infrared imaging pixels, or other types of application-specific pixels. A color filter array may be formed over the pixel array. The color filter array may include Bayer color filter array formed over the imaging pixels. The color filter array may also include a plurality of green color filter elements formed over the application-specific pixels. Barrier structures may be interposed between imaging pixels and application-specific pixels. The barrier structures may be configured to reduce or eliminate optical crosstalk between imaging pixels and adjacent application-specific pixels. The barrier structures may include an opaque photodefinable material such as black or blue photodefinable material that may be configured to filter out wavelength bands of interest.Type: ApplicationFiled: July 16, 2012Publication date: January 31, 2013Inventors: Richard Holscher, Gennadly Agranov, Dongqing Cao
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Patent number: 8362140Abstract: A pigment-dispersed composition includes (a) a high-molecular compound containing at least one kind of repeating unit selected from repeating units each represented by the following Formula (I) or (II), (b) a pigment, and (c) an organic solvent, wherein, in Formulae (I) and (II), R1 to R6 each represent a hydrogen atom or another group; X1 and X2 each represent —CO—, —C(?O)O—, —CONH—, —OC(?O)—, or a phenylene group; L1 and L2 each represent a single bond or a divalent organic linking group; A1 and A2 each represent a monovalent organic group; m and n each represent an integer of from 2 to 8; and p and q each represent an integer of from 1 to 100. Also disclosed is a pigment-dispersed composition containing (A) a graft high-molecular polymer in which acrylic acid is copolymerized at a proportion of from 5% by mass to 30% by mass in the main chain thereof, (B) a pigment, and (C) an organic solvent.Type: GrantFiled: March 12, 2009Date of Patent: January 29, 2013Assignee: FUJIFILM CorporationInventors: Kazuhiro Fujimaki, Hiromi Kanda, Koichi Sugihara, Shigekazu Suzuki
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Patent number: 8357984Abstract: An array of pixels is formed using a substrate, where each pixel has a substrate having a backside and a frontside that includes metalization layers, a photodiode formed in the substrate, frontside P-wells formed using frontside processing that are adjacent to the photosensitive region, and an N-type region formed in the substrate below the photodiode. The N-type region is formed in a region of the substrate below the photodiode and is formed at least in part in a region of the substrate that is deeper than the depth of the frontside P-wells.Type: GrantFiled: October 27, 2008Date of Patent: January 22, 2013Assignee: OmniVision Technologies, Inc.Inventors: Duli Mao, Sohei Manabe, Vincent Venezia, Hsin-Chih Tai, Hidetoshi Nozaki, Yin Qian, Howard E. Rhodes
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Patent number: 8357561Abstract: A method for fabricating a backside illuminated image sensor is provided. An exemplary method can include providing a substrate having a front surface and a back surface; forming an alignment mark at the front surface of the substrate, wherein the alignment mark is detectable for alignment from the back surface; and processing the substrate from the back surface by performing registration from the back surface and using the alignment mark as a reference.Type: GrantFiled: March 9, 2011Date of Patent: January 22, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Shih-Chi Fu, Gwo-Yuh Shiau, Liang-Lung Yao, Yuan-Chih Hsieh, Feng-Jia Shiu
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Patent number: 8354295Abstract: The present disclosure provides methods and apparatus for reducing dark current in a backside illuminated semiconductor device. In one embodiment, a method of fabricating a semiconductor device includes providing a substrate having a frontside surface and a backside surface, and forming a plurality of sensor elements in the substrate, each of the plurality of sensor elements configured to receive light directed towards the backside surface. The method further includes forming a dielectric layer on the backside surface of the substrate, wherein the dielectric layer is formed to have a compressive stress to induce a tensile stress in the substrate. A backside illuminated semiconductor device fabricated by such a method is also disclosed.Type: GrantFiled: October 18, 2011Date of Patent: January 15, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Yuer-Luen Tu, Chia-Shiung Tsai, Ching-Chun Wang, Ren-Jie Lin, Shou-Gwo Wuu
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Publication number: 20130009039Abstract: Disclosed herein is a solid-state imaging device including: a photoelectric conversion section configured to have a charge accumulating region of a first conductivity type formed in a semiconductor layer; a pixel having the photoelectric conversion section and a pixel transistor; a pixel region in which a plurality of the pixels are arranged; an epitaxially grown semiconductor layer of the first conductivity type formed on an inner wall part of a trench disposed in the semiconductor layer at least between adjacent ones of the pixels within the pixel region; and a pixel separating section configured to separate the charge accumulating regions of the adjacent ones of the pixels from each other, the pixel separating section being formed on the inside of the semiconductor layer of the first conductivity type.Type: ApplicationFiled: June 26, 2012Publication date: January 10, 2013Applicant: SONY CORPORATIONInventors: Naoyuki Sato, Yuki Miyanami
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Publication number: 20130009268Abstract: An imaging system may include an imager integrated circuit with frontside components such as imaging pixels and backside components such as color filters and microlenses. The imager integrated circuit may be mounted to a carrier wafer with alignment marks. Bonding marks on the carrier wafer and the imager integrated circuit may be used to align the carrier wafer accurately to the imager integrated circuit. The alignment marks on the carrier wafer may be read, by fabrication equipment, to align backside components of the imager integrated circuit, such as color filters and microlenses, with backside components of the imager integrated circuit, such as photodiodes.Type: ApplicationFiled: July 3, 2012Publication date: January 10, 2013Inventors: Gianluca Testa, Giovanni De Amicis
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Publication number: 20130009269Abstract: An imaging system may include an imager integrated circuit with frontside components such as imaging pixels and backside components. The imager integrated circuit may also include mirrored alignment marks formed with the frontside components. As part of forming the backside components, the integrated circuit may be flipped over such that the mirrored alignment marks are no longer mirrored and are readable by alignment systems. The formerly mirrored alignment marks may be used by the alignment systems in aligning the backside components with the frontside components in the imager integrated circuit (e.g., in forming the backside components in alignment with the frontside components).Type: ApplicationFiled: December 2, 2011Publication date: January 10, 2013Inventors: Gianluca Testa, Giovanni De Amicis
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Publication number: 20130001722Abstract: A system and method for image sensing is disclosed. An embodiment comprises a substrate with a pixel region, the substrate having a front side and a backside. A co-implant process is performed along the backside of the substrate opposing a photosensitive element positioned along the front side of the substrate. The co-implant process utilizes a first pre-amorphization implant process that creates a pre-amorphization region. A dopant is then implanted wherein the pre-amorphization region retards or reduces the diffusion or tailing of the dopants into the photosensitive region. An anti-reflective layer, a color filter, and a microlens may also be formed over the co-implant region.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Cheng-Tsung Chen, Hsun-Ying Huang, Yung-Cheng Chang, Yung-Fu Yeh, Yu-Ping Chen, Chi-Yuan Liang, Shou Shu Lu, Juan-Lin Chen, Jia-Ren Chen, Horng-Daw Shen, Chi-Hsun Hsieh
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Publication number: 20130001727Abstract: A solid state image sensor, a method for fabricating the solid state image sensor and a design structure for fabricating the solid state image sensor structure include a substrate that in turn includes a photosensitive region. Also included within solid state image sensor is a non-planar reflector layer located over a side of the photosensitive region and the substrate opposite an incoming radiation side of the photosensitive region and the substrate. The non-planar reflector layer is shaped and positioned to reflect uncaptured incident radiation back into the photosensitive region while avoiding optical cross-talk with an additional photosensitive region laterally separated within the substrate.Type: ApplicationFiled: September 13, 2012Publication date: January 3, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: James William Adkisson, Jeffrey Peter Gambino, Robert Kenneth Leidy, John J. Ellis-Monaghan
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Patent number: 8343365Abstract: The invention provides a color filter producing method that is based on dry etching and makes it possible to produce a color filter which has fine and rectangular pixels and is excellent in flatness, and color filters produced by the method. The method is a color filter producing method of forming a first colorant-containing layer on a support, removing the first colorant-containing layer corresponding to a region where a second colorant-containing layer is to be formed by dry etching, forming the second colorant-containing layer so as to be embedded into the layer-removed region, removing the first and second colorant-containing layers corresponding to a region where a third colorant-containing layer is to be formed by dry etching, forming the third colorant-containing layer so as to be embedded into the layer-removed region, and removing the colorant-containing layers laminated on other colorant-containing layers.Type: GrantFiled: July 17, 2007Date of Patent: January 1, 2013Assignee: FUJIFILM CorporationInventor: Mitsuji Yoshibayashi
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Patent number: 8339488Abstract: A solid-state image pickup device includes photoelectric conversion parts formed on an image pickup surface of a substrate, where each photoelectric conversion part generates a signal charge by receiving incident light on a light reception surface thereof, and color filters formed on an image-pickup surface of the substrate, where each color filter allows the incident light to be colored by passing through. The photoelectric conversion parts are aligned in first and second directions and include first to third color filters. A surface on which the first color filter and the second color filter are laminated in the first direction is larger than a surface on which the first color filter and the third color filter are laminated in the second direction.Type: GrantFiled: May 12, 2010Date of Patent: December 25, 2012Assignee: Sony CorporationInventors: Takashi Abe, Tetsuya Uchida
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Publication number: 20120318962Abstract: According to one embodiment, an image pickup device includes a semiconductor substrate and first and second color filters. The semiconductor substrate includes a first principal surface and a second principal surface lying opposite the first principal surface. The first color filter has a first bottom surface lying on the second principal surface side and a first top surface lying opposite the first bottom surface. The second color filter has a second bottom surface lying on the second principal surface side and a second top surface lying opposite the second bottom surface. The first color filter includes a spectroscopic filter configured to allow light having passed through the semiconductor substrate to pass through. In a cross section perpendicular to the second principal surface, the first bottom surface is longer than the first top surface, and the second bottom surface is shorter than the second top surface.Type: ApplicationFiled: June 20, 2012Publication date: December 20, 2012Inventors: Ikuko INOUE, Hajime OOTAKE, Hiromichi SEKI
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Publication number: 20120313201Abstract: Optical sensor devices, and methods of manufacturing the same, are described herein. In an embodiment, a monolithic optical sensor device includes a semiconductor substrate having a trench, with a photodetector region under said trench. An optical filter is formed in the trench and over at least a portion of the photodetector region. One or more metal structures extend above a top surface of said optical filter. The trench, photodetector region and optical filter are formed as part of a front-end-of-line (FEOL) semiconductor fabrication process. The one or more metal structures are formed as part of a back-end-of-line (BEOL) semiconductor fabrication process.Type: ApplicationFiled: May 8, 2012Publication date: December 13, 2012Applicant: INTERSIL AMERICAS LLCInventors: Francois Hebert, Jonathan Herman, I-Shan Sun