With Silicon Photodiode, N-i-n Photoconductor Structure, Or P-i-p Photoconductor Structure Patents (Class 349/28)
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Patent number: 11948954Abstract: An electrode controls transmittance of a blocking layer over a photodiode of a pixel sensor (e.g., a photodiode of a small pixel detector) by changing oxidation of a metal material included in the blocking layer. By using the electrode to adjust transmittance of the blocking layer, pixel sensors for different uses and/or products may be produced using a single manufacturing process. As a result, power and processing resources are conserved that otherwise would have been expended in switching manufacturing processes. Additionally, production time is decreased (e.g., by eliminating downtime that would otherwise have been used to reconfigure fabrication machines.Type: GrantFiled: January 10, 2023Date of Patent: April 2, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Li-Wen Huang, Chung-Liang Cheng, Ping-Hao Lin, Kuo-Cheng Lee
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Patent number: 11640138Abstract: A holographic image generation system including a spatial light modulator; a light source; a temporal modulator; a light sensor and a demodulator. The spatial light modulator has pixels. The light source illuminates the spatial light modulator. The temporal light modulator modulates an output intensity of the light source over time to encode holographic data representing a hologram. The light sensor is associated with a spatial light modulator and receives light from the light source and generates a signal representative of the output intensity of the light source. The demodulator is connected to the light sensor to receive the signal. The demodulator decodes the signal to obtain the holographic data. The demodulator is connected to the spatial light modulator to set the pixels of the spatial light modulator in accordance with the holographic data to display the hologram ready for illumination by the light source to form a holographic reconstruction.Type: GrantFiled: October 28, 2019Date of Patent: May 2, 2023Assignee: Dualitas LtdInventor: Jamieson Christmas
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Patent number: 11508604Abstract: The present disclosure provides a micro light emitting diode transfer device and a micro light emitting diode transfer method. The micro light emitting diode transfer device includes a holding member, a light source, and a liquid crystals light valve. The liquid crystals light valve is disposed on a transmission path of planar light and includes a plurality of sub light valves. The micro light emitting diodes of irradiated part can be separated from the transfer substrate and adhere to a target substrate, and thereby the micro light emitting diodes can be selectively transferred.Type: GrantFiled: December 16, 2019Date of Patent: November 22, 2022Inventor: Yong Fan
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Patent number: 8305505Abstract: An optically based transport system and method for transporting particles across a virtual electrode array are disclosed. The system comprises a photoconductor layer where optically induced electrodes are projected thereon through sequential light images in a traveling wave grid pattern in order to transport particles across the virtual electrode array with a traveling wave.Type: GrantFiled: November 16, 2010Date of Patent: November 6, 2012Assignees: Palo Alto Research Center Incorporated, Xerox CorporationInventors: Meng H. Lean, Shu Chang, Patrick Y. Maeda, Jeng Ping Lu
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Patent number: 8164719Abstract: The present invention provides a liquid crystal display device capable of preventing the occurrence of dark currents in photodiodes. Thus, the liquid crystal display device includes a liquid crystal display panel 1 including an active matrix substrate and a backlight 13 for illuminating the liquid crystal display panel. The active matrix substrate 1 includes a photodiode 7 formed by a silicon film and a light shielding film 8 for shielding the photodiode 7 against illumination light from the backlight 13. The photodiode 7 and the light shielding film 8 are provided on a base substrate 5. The light shielding film 8 is formed by a semiconductor or an insulator. Preferably, the photodiode 7 is made of, for example, polycrystalline silicon or continuous grain silicon so as to have a characteristic that its sensitivity increases as the wavelength of light entering the photodiode becomes shorter.Type: GrantFiled: June 21, 2007Date of Patent: April 24, 2012Assignee: Sharp Kabushiki KaishaInventors: Hiromi Katoh, Hiroyuki Ogawa, Christopher Brown, Benjamin James Hadwen
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Patent number: 8149252Abstract: A display uses x illuminator systems to produce x primary colors and y overlap colors, which are combinations of primary colors, to illuminate a spatial light modulator in a display system. A first set of n duty cycles for the x primary colors over a frame is provided, wherein the display system can select any one of the duty cycles to produce a desired white point. A second set of n duty cycles of x+y colors over a frame corresponding to the first set of duty cycles is determined, where the second set of duty cycles are generated responsive to a specified desired allocation of the frame to the y overlap colors, such that each of the overlap colors can be displayed from a dark shade to a bright shade while maintaining a constant color point.Type: GrantFiled: May 22, 2008Date of Patent: April 3, 2012Assignee: Texas Instruments IncorporatedInventor: Todd Alan Clatanoff
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Patent number: 8085368Abstract: A liquid crystal display and a simple method to fabricate the same are provided, which can accurately measure luminance of an external light. The liquid crystal display includes a substrate; a thin film transistor array formed on the substrate; and a photoelectric conversion element having a reflection pattern formed on at least one side of the substrate, a photoelectric conversion region provided with a first semiconductor region formed on an upper part of the reflection pattern to receive an external light reflected by the reflection pattern, and a dummy pattern formed on an upper part of the photoelectric conversion region with a width corresponding to the first semiconductor region. The photoelectric conversion region may be configured to adjust the quantity of light incident to the thin film transistor array.Type: GrantFiled: January 8, 2010Date of Patent: December 27, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Soon-Dong Kim, Seung-Gyu Tae, Se-Jin Chung, Jun-Hee Moon, Myung-Woo Lee
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Patent number: 7920215Abstract: When image data is displayed on the display portion of a conventional mobile telephone, characters cannot be displayed thereon, and thus the image data and the characters cannot be simultaneously displayed. In a portable electronic device according to the present invention, a cover member having a first display device (101) for displaying an image (digital still image or the like) and a second display device (102) having a touch input operational portion (for displaying characters, symbols, or the like) are attached to each other so as to allow opening and closing.Type: GrantFiled: September 26, 2008Date of Patent: April 5, 2011Assignee: Semiconductor Energy laboratory Co., Ltd.Inventors: Satoru Okamoto, Shunpei Yamazaki
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Patent number: 7834940Abstract: A display device that includes a first substrate having pixel electrodes; a second substrate having a color filter corresponding to the pixel electrodes to display images; a photo switching element disposed at the first substrate; a red or green color filter corresponding to the photo switching element formed at the second substrate to sense an amount of external light; a driving controller configured to output a driving control signal responsive to the amount of external light sensed by the light sensing unit; and a light generation unit configured to provide the display unit with an internal light controlled by the driving control signal. This photo sensor is well suited to human-eye luminosity and uses external light to determine how much backlight is needed.Type: GrantFiled: September 17, 2007Date of Patent: November 16, 2010Assignee: Samsung Electronics Co., Ltd.Inventor: Tsutomu Uemoto
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Patent number: 7787065Abstract: A liquid crystal display device comprises a liquid crystal panel including first and second substrates bonded to each other with a liquid crystal layer positioned therebetween, and the photosensor, formed on the second substrate, for sensing an external light from the surroundings, wherein the photosensor includes a semiconductor layer formed on the second substrate and provided with n+-type ion implantation region, ion non-implantation region and lightly doped region; an insulation film, formed on the second substrate, for covering the semiconductor layer; a passivation film, formed on the second substrate, for covering the insulation film; a first contact hole passing through the insulation film and the passivation film, to expose source and drain regions of the semiconductor layer; source and drain electrodes connected with the source and drain regions of the semiconductor layer through the first contact hole; an ion implanting prevention film formed on the insulation film and overlapped with the ion non-iType: GrantFiled: December 19, 2007Date of Patent: August 31, 2010Assignee: LG Display Co., Ltd.Inventors: Kyung Eon Lee, Myoung Kee Baek, Han Wook Hwang
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Patent number: 7385655Abstract: An object of the present invention is to provide an electronic circuit device capable of reducing the occurrence of electromagnetic waves accompanying the propagation of a signal. The electronic circuit device comprises a plurality of transparent substrates, on which an optical sensor and an optical shutter are formed. An optical signal is inputted from the external into the electronic circuit device, and the optical signal is directly irradiated on the optical sensor disposed on the transparent substrate, or the optical signal is transmitted through the transparent substrate and inputted into an optical sensor on the other substrate. The optical sensor converts the optical signal into an electric signal, and the circuit disposed on the substrate is operated. The optical shutter is controlled by the output of the circuit, the light is inputted from the external into this optical shutter, and whether the light has been transmitted or not is determined, thereby taking out the signal.Type: GrantFiled: August 28, 2003Date of Patent: June 10, 2008Assignees: Semiconductor Energy Laboratory Co., Ltd., Sharp Kabushiki KaishaInventors: Shigeki Imai, Tomoyuki Nagai, Shunpei Yamazaki, Jun Koyama
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Patent number: 7279730Abstract: In a light sensing element having simplified structure, an array substrate having the light sensing element and an LCD apparatus having the light sensing element, the light sensing element includes a first electrode, a control electrode and a second electrode. An alternating bias voltage is applied to the first electrode. An off voltage is applied to the control electrode. The second electrode outputs a light-induced leakage current based on an externally provided light and the bias voltage. Therefore, the array substrate includes one light sensing switching element corresponding to one pixel so that structure of the array substrate is simplified and opening ratio is increased.Type: GrantFiled: October 22, 2004Date of Patent: October 9, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-Jin Pak, Hyung-Guel Kim, Kee-Han Uh, Jong-Whan Cho, Jin Jeon, Young-Bae Jung
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Patent number: 6867821Abstract: An image-sensing display panel comprises an image display, including a display panel (30) and lighting means, and an image sensor (40). By using a reflective LCD display panel (30) and arranging the light guide (50) of the lighting means in front of the image sensor (40), the device has a high light efficiency, and lens means (110, 120, 130) can be integrated in components (40, 50, 100) of the device, which results in a compact construction of the device.Type: GrantFiled: July 26, 2001Date of Patent: March 15, 2005Assignee: Koninklijke Philips Electronics N.V.Inventor: Marien De Schipper
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Publication number: 20040135931Abstract: A liquid crystal display apparatus containing an image sensor, which comprises a liquid crystal display part comprising an active matrix circuit, a peripheral driver circuit for driving the active matrix circuit, and a sensor part, integrated on one substrate, wherein the sensor part is sealed and protected with a sealing part and a counter substrate.Type: ApplicationFiled: December 22, 2003Publication date: July 15, 2004Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hongyong Zhang, Masayuki Sakakura
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Patent number: 6452088Abstract: A power-generating active-matrix display includes a first region having a plurality of solar cells arranged in a matrix; and a second region having a plurality of thin film transistors, each of which is associated with a pixel electrode and wherein the solar cells overlie respective pixel electrodes.Type: GrantFiled: April 16, 2001Date of Patent: September 17, 2002Assignee: Airify Communications, Inc.Inventor: Dominik J. Schmidt
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Patent number: 6392732Abstract: An active matrix type liquid crystal display apparatus, including a pair of substrates and a liquid crystal layer interposed between said pair of substrates. One of the pair of substrates has plural scanning electrodes and plural signal electrodes arranged to cross the plural scanning electrodes. Pixels are formed at regions surrounded by the scanning electrodes and the signal electrodes. Respective ones of the pixels include an active element arranged at a vicinity of the crossing point of the scanning electrode and the signal electrode, a pixel electrode connected to the active element and a common electrode arranged in correspondence to the pixel electrode. Further, there is provided a colored filter and a shielding layer having a specific resistivity of less than 108 &OHgr;.cm.Type: GrantFiled: July 20, 2000Date of Patent: May 21, 2002Assignee: Hitachi, Ltd.Inventors: Masahito Oh-e, Sukekazu Aratani, Shigeru Matsuyama, Hiroaki Asuma, Kiyoshige Kinugawa
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Patent number: 6219170Abstract: A light modulation device incorporating: a semiconductor layer 3 formed on the upper surface of a lower transparent electrode 2 and made of an n-type semiconductor material; and an upper transparent electrode 5 formed on the upper surface of the semiconductor layer 3 through an insulating layer 4, wherein an electric field is applied vertically such that the upper transparent electrode 5 is negative and the lower transparent electrode 2 is positive to deplete carriers of the n-type semiconductor layer 3 so as to change at least either one of reflectance of light or adsorbance of light.Type: GrantFiled: July 12, 1999Date of Patent: April 17, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Koichi Kimura, Mitsuyoshi Ichihashi
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Patent number: 6069674Abstract: The liquid crystal display apparatus of the invention includes a device-formed substrate, a counter substrate, and a liquid crystal layer interposed therebetween. The device-formed substrate includes: a plurality of display electrodes for applying display voltages to the liquid crystal layer; a plurality of active devices for supplying the display voltages to the plurality of display electrodes, respectively; and image inputting devices for inputting an image. In the liquid crystal display apparatus, image processing means is provided for processing the image input by the image inputting devices.Type: GrantFiled: May 17, 1996Date of Patent: May 30, 2000Assignee: Sharp Kabushiki KaishaInventors: Shigeru Aomori, Yoshiki Nakatani
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Patent number: 5847778Abstract: In a projection type video display device comprising a light writing type spacial light modulator, disturbances brought about by a resetting pulse and appearing in a projected picture as a black belt or beat are prevented. This is accomplished by causing the resetting pulse, which is to withdraw electric charges produced by incoming writing light and accumulated in spacial light modulator, to occur within a vertical blanking period synchronized with vertical synchronization signal.Further, by changing the pulse width and the voltage of the resetting pulse in accordance with vertical synchronization frequency, pictures of a certain fixed brightness are made available against various vertical synchronization frequencies; and even with a high vertical synchronization frequency, projected pictures are never annoyed by such disturbance that is caused by a resetting pulse dislocated out of the vertical blanking period.Type: GrantFiled: July 3, 1996Date of Patent: December 8, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuaki Muto, Hiroshi Miyai, Akio Takimoto, Yasunori Kuratomi, Toshikazu Kawakami, Hiroshi Noguchi
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Patent number: 5781267Abstract: The present invention provides a spatial light modulator comprising a photoconductor having a current rectifying function and a liquid crystal layer having an antiferroelectric phase as a phase of the liquid crystal located between a pair of transparent electrodes, having a wide viewing angle and high-speed response, capable of reproducing a light-input dynamic picture including half-tone display, and being stable and reliable. Moreover, a liquid crystal display device which can be downsized by comprising a spatial light modulator, comprises a photoconductor having current rectifying function and a liquid crystal layer having the antiferroelectric phase as a phase of the liquid crystal located between a pair of transparent electrodes, a display device to input light to the photoconductor and a power source to apply the driving voltage to the spatial light modulator can be provided.Type: GrantFiled: October 14, 1997Date of Patent: July 14, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akio Takimoto, Junichi Hibino, Hisahito Ogawa
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Patent number: 5594567Abstract: A spatial light modulator having a photoconductor, a matrix of reflectors and a modulating layer is disclosed. The portions of the photoconductor in between the reflectors have a smaller photoconductivity than those portions under the reflectors. The reduced photoconductivity can be made, for example, by doping the photoconductor while using the reflectors as a mask or by illuminating the photoconductor with a light of 360 joules/cm.sup.2. The photoconductor in between the reflectors may be grooved, The photoconductor can be a superlattice photoconductor.Type: GrantFiled: May 18, 1995Date of Patent: January 14, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Koji Akiyama, Akio Takimoto, Hisahito Ogawa
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Patent number: 5583676Abstract: A spatial light modulator including a pair of transparent insulating substrates each having a transparent conducting electrode, the substrates forming a top layer and a bottom layer, a photoconductive layer, a liquid crystal layer and a reflection layer being present between the top and bottom layers, wherein the photoconductive layer comprises a first amorphous semiconductor layer and a second amorphous semiconductor layer disposed in order on the bottom layer, and the first amorphous semiconductor layer and the second amorphous semiconductor layer have different refractive indices from each other.Type: GrantFiled: September 2, 1994Date of Patent: December 10, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Koji Akiyama, Akifumi Ogiwara, Hisahito Ogawa