Patents by Inventor John Z. Z. Zhong
John Z. Z. Zhong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8253890Abstract: A high aperture active matrix liquid crystal display (AMLCD) includes pixel electrodes in respective pixels which overlap adjacent address lines. The color filters are formed on the active substrate in a manner such that the filters also overlap the address lines and function as an insulating layer between the pixel electrodes and address lines in the areas of overlap. Accordingly, line-pixel capacitances are reduced and the resulting AMLCD is easier to manufacture. The total number of process step in manufacturing is reduced, and plate-to-plate (active to passive plate) alignment is much easier and less important.Type: GrantFiled: October 4, 2006Date of Patent: August 28, 2012Assignee: LG Display Co., Ltd.Inventors: John Z. Z. Zhong, Willem den Boer
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Patent number: 8198110Abstract: This invention is related to a thin film transistor (TFT) array and method of making same, for use in an active matrix liquid crystal display (AMLCD) having a high pixel aperture ratio. The TFT array and corresponding display are made by forming the TFTs and corresponding address lines on a substrate, coating the address lines and TFTs with a photo-imageable insulating layer which acts as a negative resist, exposing portions of the insulating layer with UV light which are to remain on the substrate, removing non-exposed areas of the insulating layer so as to form contact vias, and depositing pixel electrodes on the substrate over the insulating layer so that the pixel electrodes contact respective TFT source electrodes through the contact vias. The resulting display has an increased pixel aperture ratio because the pixel electrodes are formed over the insulating layer so as to overlap portions of the array address lines.Type: GrantFiled: October 14, 2008Date of Patent: June 12, 2012Assignee: LG Display Co., Ltd.Inventors: Willem Den Boer, John Z. Z. Zhong, Tieer Gu
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Patent number: 7969478Abstract: Methods and apparatuses for color correction of color device for various operating conditions. In at least one embodiment of the present invention, operating under a current condition, a color correction operation that is derived from color correction operations defined for other conditions is performed on the color data. In another embodiment, a device profile for managing colors for a color device operating under one condition is interpolated from the device profiles for the color device operating under other conditions (e.g., based on the input received from a user interface according to the perception of the user or based on the measurement of a sensor). The interpolation can be based on the input received from a user interface according to the perception of the user or it can be based on the measurement of a sensor or a set of sensors. Various operating conditions for a color device (e.g.Type: GrantFiled: April 18, 2003Date of Patent: June 28, 2011Assignee: Apple Inc.Inventors: Kok Chen, Gabriel G. Marcu, Wei Chen, John Z. Z. Zhong
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Patent number: 7445948Abstract: This invention is related to a thin film transistor (TFT) array and method of making same, for use in an active matrix liquid crystal display (AMLCD) having a high pixel aperture ratio. The TFT array and corresponding display are made by forming the TFTs and corresponding address lines on a substrate, coating the address lines and TFTs with a photo-imageable insulating layer which acts as a negative resist, exposing portions of the insulating layer with UV light which are to remain on the substrate, removing non-exposed areas of the insulating layer so as to form contact vias, and depositing pixel electrodes on the substrate over the insulating layer so that the pixel electrodes contact respective TFT source electrodes through the contact vias. The resulting display has an increased pixel aperture ratio because the pixel electrodes are formed over the insulating layer so as to overlap portions of the array address lines.Type: GrantFiled: January 23, 2002Date of Patent: November 4, 2008Assignee: LG. Display Co., Ltd.Inventors: Willem den Boer, John Z. Z. Zhong
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Patent number: 7135705Abstract: A high aperture active matrix liquid crystal display (AMLCD) includes pixel electrodes in respective pixels which overlap adjacent address lines. The color filters are formed on the active substrate in a manner such that the filters also overlap the address lines and function as an insulating layer between the pixel electrodes and address lines in the areas of overlap. Accordingly, line-pixel capacitances are reduced and the resulting AMLCD is easier to manufacture. The total number of process step in manufacturing is reduced, and plate-to-plate (active to passive plate) alignment is much easier and less important.Type: GrantFiled: March 15, 2004Date of Patent: November 14, 2006Assignee: LG.Philips LCD Co., Ltd.Inventors: John Z. Z. Zhong, Willem den Boer
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Patent number: 6707067Abstract: A high aperture active matrix liquid crystal display (AMLCD) includes pixel electrodes in respective pixels which overlap adjacent address lines. The color filters are formed on the active substrate in a manner such that the filters also overlap the address lines and function as an insulating layer between the pixel electrodes and address lines in the areas of overlap. Accordingly, line-pixel capacitances are reduced and the resulting AMLCD is easier to manufacture. The total number of process step in manufacturing is reduced, and plate-to-plate (active to passive plate) alignment is much easier and less important.Type: GrantFiled: February 11, 2002Date of Patent: March 16, 2004Assignee: LG.Philips LCD Co., Ltd.Inventors: John Z. Z. Zhong, Willem den Boer
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Patent number: 6587168Abstract: A liquid crystal display includes at least one polarizer located interior or internally of substrates of the display. In certain embodiments, the polarizer may be spin-coated onto the interior of one of the substrates, preferably the passive substrate of the display. Such a polarizer may also be located interior of color filters on the copassive substrate. Thus, light being transmitted through the display proceeds through the front polarizer prior to being de-polarized by the color filters. The result is improved contrast ratios in the display due to the minimization of the de-polarizing of color filters. In certain embodiments, the internal polarizer(s) may be photo-patternable by way of ultraviolet photo-imaging.Type: GrantFiled: April 3, 2002Date of Patent: July 1, 2003Assignee: Guardian Industries Corp.Inventors: Michael R. Jones, John Z. Z. Zhong
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Patent number: 6515300Abstract: This invention is related to a thin film transistor (TFT) array and method of making same, for use in an active matrix liquid crystal display (AMLCD) having a high pixel aperture ratio. The TFT array and corresponding display are made by forming the TFTs and corresponding address lines on a substrate, coating the address lines and TFTs with a photo-imageable insulating layer which acts as a negative resist, exposing portions of the insulating layer with UV light which are to remain on the substrate, removing non-exposed areas of the insulating layer so as to form contact vias, and depositing pixel electrodes on the substrate over the insulating layer so that the pixel electrodes contact respective TFT source electrodes through the contact vias. The resulting display has an increased pixel aperture ratio because the pixel electrodes are formed over the insulating layer so as to overlap portions of the array address lines.Type: GrantFiled: February 13, 2001Date of Patent: February 4, 2003Assignee: LG. Philips LCD Co., LtdInventors: Willem den Boer, John Z. Z. Zhong, Tieer Gu
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Patent number: 6417899Abstract: A liquid crystal display includes at least one polarizer located interior or internally of substrates-of the display. In certain embodiments, the polarizer may be spin-coated onto the interior of one of the substrates, preferably the passive substrate of the display. Such a polarizer may also be located interior of color filters on the copassive substrate. Thus, light being transmitted through the display proceeds through the front polarizer prior to being de-polarized by the color filters. The result is improved contrast ratios in the display due to the minimization of the de-polarizing of color filters. In certain embodiments, the internal polarizer(s) may be photo-patternable by way of ultraviolet photo-imaging.Type: GrantFiled: August 31, 1999Date of Patent: July 9, 2002Assignee: Guardian Industries Corp.Inventors: Michael R. Jones, John Z. Z. Zhong
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Patent number: 6372534Abstract: This invention is related to a thin film transistor (TFT) array and method of making same, for use in an active matrix liquid crystal display (AMLCD) having a high pixel aperture ratio. The TFT array and corresponding display are made by forming the TFTs and corresponding address lines on a substrate, coating the address lines and TFTs with a photo-imageable insulating layer which acts as a negative resist, exposing portions of the insulating layer with UV light which are to remain on the substrate, removing non-exposed areas of the insulating layer so as to form contact vias, and depositing pixel electrodes on the substrate over the insulating layer so that the pixel electrodes contact respective TFT source electrodes through the contact vias. The resulting display has an increased pixel aperture ratio because the pixel electrodes are formed over the insulating layer so as to overlap portions of the array address lines.Type: GrantFiled: April 12, 1996Date of Patent: April 16, 2002Assignee: LG. Philips LCD Co., LTDInventors: Willem den Boer, John Z. Z. Zhong, Tieer Gu
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Patent number: 6365916Abstract: A high aperture active matrix liquid crystal display (AMLCD) includes pixel electrodes in respective pixels which overlap adjacent address lines. The color filters are formed on the active substrate in a manner such that the filters also overlap the address lines and function as an insulating layer between the pixel electrodes and address lines in the areas of overlap. Accordingly, line-pixel capacitances are reduced and the resulting AMLCD is easier to manufacture. The total number of process step in manufacturing is reduced, and plate-to-plate (active to passive plate) alignment is much easier and less important.Type: GrantFiled: July 16, 1999Date of Patent: April 2, 2002Assignee: LG. Philips LCD Co., Ltd.Inventors: John Z. Z. Zhong, Willem den Boer
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Patent number: 6307215Abstract: This invention is related to a thin film transistor (TFT) array and method of making same, for use in an active matrix liquid crystal display (AMLCD) having a high pixel aperture ratio. The TFT array and corresponding display are made by forming the TFTs and corresponding address lines on a substrate, coating the address lines and TFTs with a photo-imageable insulating layer which acts as a negative resist, exposing portions of the insulating layer with UV light which are to remain on the substrate, removing non-exposed areas of the insulating layer so as to form contact vias, and depositing pixel electrodes on the substrate over the insulating layer so that the pixel electrodes contact respective TFT source electrodes through the contact vias. The resulting display has an increased pixel aperture ratio because the pixel electrodes are formed over the insulating layer so as to overlap portions of the array address lines.Type: GrantFiled: July 21, 1999Date of Patent: October 23, 2001Assignee: OIS Optical Imaging Systems, Inc.Inventors: Willem den Boer, John Z. Z. Zhong, Tieer Gu
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Patent number: 6124606Abstract: This invention is related to a radiation imager (e.g. x-ray imager) and method of making same. An insulating material having a low dielectric constant is provided in areas of overlap between collector electrodes and underlying TFTs, diodes, and/or address lines in order to improve the signal-to-noise ratio of the imager. The TFT array and corresponding imager are made in certain embodiments by coating the address lines and TFTs with a photo-imageable insulating layer which acts as a negative resist, exposing portions of the insulating layer with UV light, removing non-exposed areas of the insulating layer so as to form contact vias, and depositing storage capacitor collecting electrodes over the insulating layer so that the collecting electrodes contact TFT source electrodes through the contact vias. The resulting imager has an improved signal-to-noise ratio due to the low dielectric constant of the insulating layer.Type: GrantFiled: January 14, 1998Date of Patent: September 26, 2000Assignee: OIS Optical Imaging Systems, Inc.Inventors: Willem den Boer, John Z. Z. Zhong, Tieer Gu, Young H. Byun, Steven Aggas
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Patent number: 6124907Abstract: A liquid crystal display includes at least one polarizer located interior or internally of substrates of the display. In certain embodiments, the polarizer may be spin-coated onto the interior of one of the substrates, preferably the passive substrate of the display. Such a polarizer may also be located interior of color filters on the copassive substrate. Thus, light being transmitted through the display proceeds through the front polarizer prior to being de-polarized by the color filters. The result is improved contrast ratios in the display due to the minimization of the de-polarizing of color filters. In certain embodiments, the internal polarizer(s) may be photo-patternable by way of ultraviolet photo-imaging.Type: GrantFiled: April 24, 1998Date of Patent: September 26, 2000Assignee: OIS Optical Imaging Systems, Inc.Inventors: Michael R. Jones, John Z. Z. Zhong
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Patent number: 6060714Abstract: This invention is related to a radiation image (e.g. X-ray imager) including a thin film transistor (TFT) array, and method of making same. A photo-imageable interface barrier layer is provided between an array of collector electrodes and a photoconductor layer so as to simplify the process for manufacturing the imager and to improve image uniformity. In certain embodiments, the barrier layer is a negative resist. In certain embodiments, the barrier layer and an insulating layer over the TFTs may be of the same photo-imageable material.Type: GrantFiled: January 23, 1998Date of Patent: May 9, 2000Assignee: OIS Optical Imaging Systems, Inc.Inventors: John Z. Z. Zhong, Willem den Boer, Young H. Byun
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Patent number: 6028651Abstract: A liquid crystal display in which a negatively birefringent layer is used as both an orientation film and as a retarder in the display. An improved method of making such a display is also disclosed. In preferred embodiments, each of the orientation layers has a retardation value of from about -80 to -200 nm.Type: GrantFiled: January 13, 1999Date of Patent: February 22, 2000Assignee: OIS Optical Imaging Systems, Inc.Inventors: Adiel Abileah, Gang Xu, John Z. Z. Zhong
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Patent number: 6008872Abstract: A backlit transmissive liquid crystal display including non-linear resistive thin film diodes (TFDs). Select address lines on the active substrate provide both conventional address line functionality, as well as acting as one of the electrodes for each thin film diode. Two such diodes are provided in each pixel in certain embodiments. Still further, black matrix material is provided between the aforesaid address line material and the substrate so as to form rows of stacks on the active substrate. The thin film diode semi-insulating material, the address line material, and the black matrix material are patterned together in a single step to form elongated rows (or columns) on the active substrate. In such a manner, the display has reduced ambient light reflections, and reduce photosensitivity.Type: GrantFiled: March 13, 1998Date of Patent: December 28, 1999Assignee: OIS Optical Imaging Systems, Inc.Inventors: Willem den Boer, John Z. Z. Zhong, Vijayen S. Veerasamy, Yiwei Lu
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Patent number: 5994836Abstract: An organic light emitting diode (OLED) array structure, and corresponding method of making same are provided. Each OLED pixel includes a first electrode on a substrate, a second electrode on a substrate, and an organic emission layer disposed between the first and second electrodes so as to emit visible light when a suitable potential is applied thereto by the electrodes. In accordance with certain embodiments of this invention, a step covering or coverage layer is provided over step or edge areas of the first electrode in order to reduce the structures susceptibility to breakdown at pixel edges thereby improving yields.Type: GrantFiled: February 2, 1998Date of Patent: November 30, 1999Assignee: OIS Optical Imaging Systems, Inc.Inventors: Willem den Boer, John Z. Z. Zhong, Scott V. Thomsen
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Patent number: 5994721Abstract: A high aperture active matrix liquid crystal display (AMLCD) includes pixel electrodes in respective pixels which overlap adjacent address lines. The color filters are formed on the active substrate in a manner such that the filters also overlap the address lines and function as an insulating layer between the pixel electrodes and address lines in the areas of overlap. Accordingly, line-pixel capacitances are reduced and the resulting AMLCD is easier to manufacture. The total number of process step in manufacturing is reduced, and plate-to-plate (active to passive plate) alignment is much easier and less important.Type: GrantFiled: August 8, 1997Date of Patent: November 30, 1999Assignee: OIS Optical Imaging Systems, Inc.Inventors: John Z. Z. Zhong, Willem den Boer
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Patent number: 5926236Abstract: A backlit transmissive liquid crystal display including non-linear resistive thin film diodes (TFDs). Select address lines on the active substrate provide both conventional address line functionality, as well as acting as one of the electrodes for each thin film diode. Two such diodes are provided in each pixel in certain embodiments. Still further, black matrix material is provided between the aforesaid address line material and the substrate so as to form rows of stacks on the active substrate. The thin film diode semi-insulating material, the address line material, and the black matrix material are patterned together in a single step to form elongated rows (or columns) on the active substrate. In such a manner, the display has reduced ambient light reflections, and reduce photosensitivity.Type: GrantFiled: November 24, 1998Date of Patent: July 20, 1999Assignee: OIS Optical Imaging Systems, Inc.Inventors: Willem den Boer, John Z. Z. Zhong, Vijayen S. Veerasamy, Yiwei Lu