Patents by Inventor Chen-Wen Fan
Chen-Wen Fan 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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Publication number: 20240176093Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.Type: ApplicationFiled: February 5, 2024Publication date: May 30, 2024Inventors: Chao-Chang HU, Chih-Wei WENG, Chia-Che WU, Chien-Yu KAO, Hsiao-Hsin HU, He-Ling CHANG, Chao-Hsi WANG, Chen-Hsien FAN, Che-Wei CHANG, Mao-Gen JIAN, Sung-Mao TSAI, Wei-Jhe SHEN, Yung-Ping YANG, Sin-Hong LIN, Tzu-Yu CHANG, Sin-Jhong SONG, Shang-Yu HSU, Meng-Ting LIN, Shih-Wei HUNG, Yu-Huai LIAO, Mao-Kuo HSU, Hsueh-Ju LU, Ching-Chieh HUANG, Chih-Wen CHIANG, Yu-Chiao LO, Ying-Jen WANG, Shu-Shan CHEN, Che-Hsiang CHIU
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Publication number: 20240162317Abstract: A non-volatile memory device includes a memory cell including a substrate, a select gate, a control gate, a planar floating gate, a coupling dielectric layer, an erase gate dielectric layer, and an erase gate. The select gate and the control gate are disposed on the substrate and laterally spaced apart from each other, and the control gate includes a non-vertical surface. The planar floating gate includes a lateral tip laterally spaced apart from the control gate. The coupling dielectric layer includes a first thickness (T1). The erase gate dielectric layer covers the non-vertical surface of the control gate and the lateral tip of the planar floating gate, and includes a second thickness (T2). The erase gate covers the erase gate dielectric layer and the lateral tip of the planar floating gate. The first thickness and the second thickness satisfy the following relation: (T2)<(T1)<2(T2).Type: ApplicationFiled: October 20, 2023Publication date: May 16, 2024Inventors: Der-Tsyr Fan, I-Hsin Huang, Tzung-Wen Cheng, Yu-Ming Cheng, Chen-Ming Tsai
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Publication number: 20240142749Abstract: An optical element driving mechanism is provided and includes a fixed assembly, a first movable assembly and a first driving assembly. The first movable assembly is configured to connect a first optical element, and the first movable assembly is movable relative to the fixed assembly. The first driving assembly is configured to drive the first movable assembly to move relative to the fixed assembly in a first dimension.Type: ApplicationFiled: January 4, 2024Publication date: May 2, 2024Inventors: Chao-Chang HU, Chen-Hsien FAN, Chih-Wen CHIANG, Chien-Yu KAO
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Publication number: 20240111125Abstract: An optical element driving mechanism is provided and includes a fixed assembly, a first movable assembly and a first driving assembly. The first movable assembly is configured to connect a first optical element, and the first movable assembly is movable relative to the fixed assembly. The first driving assembly is configured to drive the first movable assembly to move relative to the fixed assembly in a first dimension.Type: ApplicationFiled: October 5, 2023Publication date: April 4, 2024Inventors: Chao-Chang HU, Chen-Hsien FAN, Chih-Wen CHIANG, Chien-Yu KAO
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Patent number: 11934027Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.Type: GrantFiled: June 21, 2022Date of Patent: March 19, 2024Assignee: TDK TAIWAN CORP.Inventors: Chao-Chang Hu, Chih-Wei Weng, Chia-Che Wu, Chien-Yu Kao, Hsiao-Hsin Hu, He-Ling Chang, Chao-Hsi Wang, Chen-Hsien Fan, Che-Wei Chang, Mao-Gen Jian, Sung-Mao Tsai, Wei-Jhe Shen, Yung-Ping Yang, Sin-Hong Lin, Tzu-Yu Chang, Sin-Jhong Song, Shang-Yu Hsu, Meng-Ting Lin, Shih-Wei Hung, Yu-Huai Liao, Mao-Kuo Hsu, Hsueh-Ju Lu, Ching-Chieh Huang, Chih-Wen Chiang, Yu-Chiao Lo, Ying-Jen Wang, Shu-Shan Chen, Che-Hsiang Chiu
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Patent number: 8557143Abstract: An electroluminescent phosphor comprising ZnS:Mn is disclosed. Also disclosed are ZnS:Mn electroluminescent phosphors that are free of or substantially free of copper, and/or wherein the phosphor has a D50 size of less than about 5 ?m. In addition, a method for preparing a ZnS:Mn phosphor is disclosed, comprising the steps of contacting at least a portion of each of a first solution comprising a Zn2+ compound, a manganese source, and a second solution comprising a S2? source agent; and then heating the mixture at a temperature and for a time sufficient to form a phosphor.Type: GrantFiled: March 11, 2009Date of Patent: October 15, 2013Assignee: Global Tungsten and Powders Corp.Inventors: Xianzhong Chen, Shellie Kaye Northrop, Chen-Wen Fan
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Patent number: 8298666Abstract: An electroluminescent (EL) phosphor is described wherein each individual phosphor particle is encapsulated in an inorganic coating, preferably aluminum oxyhydroxide. The encapsulated phosphor shows an extreme insensitivity to atmospheric moisture and suffers only minor loss of initial brightness in lamps. The method of applying the coating is a hybrid process, which involves EL phosphor particles first being coated with a thin inorganic film using an atomic layer deposition (ALD) method in a fluidized bed wherein the precursors are introduced sequentially in repeated cycles, subsequently followed by an additional coating layer applied by a chemical vapor deposition (CVD) method in which the precursors are introduced simultaneously.Type: GrantFiled: January 12, 2007Date of Patent: October 30, 2012Assignee: Global Tungsten & Powders Corp.Inventors: Chen-Wen Fan, Tuan A. Dang, Joan M. Coveleskie, Frank A. Schwab, Dale E. Benjamin, David C. Sheppeck
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Patent number: 7846352Abstract: A method of producing a UV-emitting magnesium pentaborate phosphor is described. The method comprises combining a hydrated magnesium hexaborate with oxides of Y, Gd, Ce and Pr to form a mixture and firing the mixture in a slightly reducing atmosphere to form the phosphor. The hydrated magnesium hexaborate, which is preferably prepared as a precipitate, preferably has a formula MgB6O10.XH2O where X is from 4 to 6.Type: GrantFiled: February 13, 2008Date of Patent: December 7, 2010Assignee: OSRAM Sylvania Inc.Inventors: Gregory A. Marking, Chen-Wen Fan, Thomas M. Snyder
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Patent number: 7833437Abstract: The present invention is an electroluminescent phosphor wherein each individual phosphor particle is encapsulated in an inorganic coating applied by an atomic layer deposition (ALD) coating method. In a preferred embodiment, the coating is aluminum oxyhydroxide. The encapsulated phosphor shows an extreme insensitivity to atmospheric moisture and suffers only minor loss of initial brightness in lamps.Type: GrantFiled: January 12, 2007Date of Patent: November 16, 2010Assignee: Global Tungsten & Powders Corp.Inventors: Chen-Wen Fan, Tuan A. Dang, Joan M. Coveleskie, Frank A. Schwab, Dale E. Benjamin, David C. Sheppeck
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Publication number: 20090230357Abstract: An electroluminescent phosphor comprising ZnS:Mn is disclosed. Also disclosed are ZnS:Mn electroluminescent phosphors that are free of or substantially free of copper, and/or wherein the phosphor has a D50 size of less than about 5 ?m. In addition, a method for preparing a ZnS:Mn phosphor is disclosed, comprising the steps of contacting at least a portion of each of a first solution comprising a Zn2+ compound, a manganese source, and a second solution comprising a S2? source agent; and then heating the mixture at a temperature and for a time sufficient to form a phosphor.Type: ApplicationFiled: March 11, 2009Publication date: September 17, 2009Inventors: Xianzhong Chen, Shellie Kaye Northrop, Chen-Wen Fan
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Patent number: 7535176Abstract: Blue-emitting phosphors for use with plasma display panels (PDP) or other vacuum ultraviolet-excited (VUV) devices are provided. These blue-emitting phosphors and mixtures thereof include at least a europium-activated calcium-substituted barium hexa-aluminate (CBAL) phosphor. Preferably, the CBAL phosphor has a composition which may be represented by the formula: Ba1.29-x-yCaxEuyAl12O19.29, wherein 0<x<0.25 and 0.01<y<0.20. These blue-emitting phosphors exhibit improved degradation characteristics, including reduced color shift and increased intensity maintenance, under conditions found in VUV-excited devices.Type: GrantFiled: May 13, 2004Date of Patent: May 19, 2009Assignee: Osram Sylvania Inc.Inventors: Gregory A. Marking, Chung-Nin Chau, Thomas M. Snyder, Shellie K. Northrop, Chen Wen Fan
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Patent number: 7497974Abstract: The sensitivity of YPO4:Ce phosphors to 185 nm radiation may be increased by incorporating a praseodymium coactivator. The use of Ce and Pr as co-activators in a YPO4 phosphor improves the sensitivity of the phosphor to excitation by both 185 nm and 254 nm radiation and should increase total UVA and UVB output in fluorescent lamps. The co-activated phosphor has emission peaks at about 355 nm and about 335 nm.Type: GrantFiled: August 1, 2006Date of Patent: March 3, 2009Assignee: Osram Sylvania Inc.Inventors: Chen Wen Fan, Gregory A. Marking, Thomas M. Snyder
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Publication number: 20080213152Abstract: A method of producing a UV-emitting magnesium pentaborate phosphor is described. The method comprises combining a hydrated magnesium hexaborate with oxides of Y, Gd, Ce and Pr to form a mixture and firing the mixture in a slightly reducing atmosphere to form the phosphor. The hydrated magnesium hexaborate, which is preferably prepared as a precipitate, preferably has a formula MgB6O10.XH2O where X is from 4 to 6.Type: ApplicationFiled: February 13, 2008Publication date: September 4, 2008Applicant: OSRAM SYLVANIA INC.Inventors: Gregory A. Marking, Chen-Wen Fan, Thomas M. Snyder
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Publication number: 20080030120Abstract: The sensitivity of YPO4:Ce phosphors to 185 nm radiation may be increased by incorporating a praseodymium coactivator. The use of Ce and Pr as co-activators in a YPO4 phosphor improves the sensitivity of the phosphor to excitation by both 185 nm and 254 nm radiation and should increase total UVA and UVB output in fluorescent lamps. The co-activated phosphor has emission peaks at about 355 nm and about 335 nm.Type: ApplicationFiled: August 1, 2006Publication date: February 7, 2008Applicant: OSRAM SYLVANIA INC.Inventors: Chen Wen Fan, Gregory A. Marking, Thomas M. Snyder
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Patent number: 7309454Abstract: A UV-emitting phosphor comprising SrB4O7:Eu phosphor particles that have been treated to yield a surface layer containing from greater than 0 to about 25 atomic percent aluminum. The holdover stability of the treated SrB4O7:Eu phosphor improves the 100-hour maintenance in a fluorescent tanning lamp to the extent that the treated phosphor may be subject to a holdover period of more than 25 days without a significant change in its 100-hour maintenance.Type: GrantFiled: April 25, 2005Date of Patent: December 18, 2007Assignee: Osram Sylvania Inc.Inventors: Chen-Wen Fan, Thomas M. Snyder, Eric A. Thomason
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Patent number: 7288215Abstract: A method is provided for making narrow-band, UVB-emitting, (Y,Gd,Ce,Pr)Mg borate phosphors. The method involves the use of a mixed oxide co-precipitate which is combined with MgO and boric acid and fired twice to form the borate phosphor. The mixed oxide co-precipitate is formed by dissolving sources of Y, Gd, Ce, and optionally Pr, in an acid solution. Oxalic acid or ammonia is added to the solution (or vice versa) to form a co-precipitate of oxalates or hydroxides that are further fired to obtain a mixed oxide co-precipitate. The use of the mixed oxide co-precipitate improves homogeneity and yields a phosphor having a higher brightness with very little or no sticking between the fired cakes and the firing crucibles.Type: GrantFiled: March 30, 2005Date of Patent: October 30, 2007Assignee: Osram Sylvania Inc.Inventors: Chen-Wen Fan, Thomas M. Snyder, Eric A. Thomason
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Publication number: 20070172657Abstract: An electroluminescent (EL) phosphor is described wherein each individual phosphor particle is encapsulated in an inorganic coating, preferably aluminum oxyhydroxide. The encapsulated phosphor shows an extreme insensitivity to atmospheric moisture and suffers only minor loss of initial brightness in lamps. The method of applying the coating is a hybrid process, which involves EL phosphor particles first being coated with a thin inorganic film using an atomic layer deposition (ALD) method in a fluidized bed wherein the precursors are introduced sequentially in repeated cycles, subsequently followed by an additional coating layer applied by a chemical vapor deposition (CVD) method in which the precursors are introduced simultaneously.Type: ApplicationFiled: January 12, 2007Publication date: July 26, 2007Applicant: OSRAM SYLVANIA Inc.Inventors: Chen-Wen Fan, Tuan A. Dang, Joan M. Coveleskie, Frank A. Schwab, Dale E. Benjamin, David C. Sheppeck
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Publication number: 20070172580Abstract: The present invention is an electroluminescent phosphor wherein each individual phosphor particle is encapsulated in an inorganic coating applied by an atomic layer deposition (ALD) coating method. In a preferred embodiment, the coating is aluminum oxyhydroxide. The encapsulated phosphor shows an extreme insensitivity to atmospheric moisture and suffers only minor loss of initial brightness in lamps.Type: ApplicationFiled: January 12, 2007Publication date: July 26, 2007Applicant: OSRAM SYLVANIA INC.Inventors: Chen-Wen Fan, Tuan A. Dang, Joan M. Coveleskie, Frank A. Schwab, Dale E. Benjamin, David C. Sheppeck
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Publication number: 20070160753Abstract: The maintenance characteristics of the phosphors used in VUV-excited devices such as plasma display panels can be improved by applying a coating of an aluminum oxyhydroxide compound by reacting vaporized trimethylaluminum with water vapor at a temperature of about 430° C. or above. In particular, the maintenance of an europium-activated, calcium-substituted barium hexa-aluminate phosphor is significantly improved following exposure to a high intensity VUV flux.Type: ApplicationFiled: May 13, 2004Publication date: July 12, 2007Inventors: Chen-Wen Fan, Chung-Nin Chau, Gregory Marking, William Edgerton
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Patent number: 7238302Abstract: The present invention is a single-component, UV-emitting phosphor having a composition represented by the general formula (Y1?x?y?zLaxGdyCeZ)PO4 where x has a value in a range from 0.001 to 0.98, y has a value in a range from 0 and 0.1, z has a value in a range from 0.01 and 0.2, and x+y+z<1. The phosphor when stimulated by 254 nm radiation emits in both the UVA and UVB regions. The relative balance of the UVA and UVB emissions may be varied by adjusting the relative amounts of Y and La. Brightness can be increased by adding Gd to the composition.Type: GrantFiled: December 28, 2004Date of Patent: July 3, 2007Assignee: Osram Sylvania Inc.Inventors: Chen-Wen Fan, Thomas M. Snyder, Eric A. Thomason