Patents by Inventor Chien-Nan Yeh
Chien-Nan Yeh 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: 11948497Abstract: A display device includes a plurality of sub-pixels. The sub-pixels include a first sub-pixel and a second sub-pixel. The first sub-pixel includes a first light emitting element and a first control circuit. The first control circuit is configured to provide a first driving current to the first light emitting element. The second sub-pixel includes a second light emitting element and a second control circuit. The second control circuit is configured to provide a second driving current to the second light emitting element. The first control circuit and the second control circuit are configured to differently control pulse amplitude of the first driving current and pulse amplitude of the second driving current, such that both of the first light emitting element and the second light emitting element emit at a target wavelength or a color point range (e.g. +/?1.5˜2 nm).Type: GrantFiled: August 30, 2021Date of Patent: April 2, 2024Assignee: Lextar Electronics CorporationInventors: Chih-Hao Lin, Chien-Nan Yeh, Jo-Hsiang Chen, Shih-Lun Lai
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Publication number: 20230260979Abstract: A pixel package is provided. The pixel package includes a flexible redistribution layer and a plurality of LED chips arranged on the surface of the flexible redistribution layer in a flip-chip manner. The pixel package also includes a plurality of light-adjusting layers respectively disposed on the LED chips. The pixel package further includes a plurality of flexible composite laminates disposed on the surface of the flexible redistribution layer and between the LED chips.Type: ApplicationFiled: May 9, 2022Publication date: August 17, 2023Inventors: Fu-Hsin CHEN, Yu-Chun LEE, Cheng-Ta KUO, Jian-Chin LIANG, Tzong-Liang TSAI, Shiou-Yi KUO, Chien-Nan YEH
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Publication number: 20230201988Abstract: A tool holder having force sensors includes a first connection portion, a second connection portion, a first sensing portion, a second sensing portion, at least one first force sensor and at least one second force sensor. The first connection portion connects a cutting tool along an axis. The second connection portion connects a spindle along the axis. The first sensing portion having at least one first hole connects the first connection portion along the axis. The second sensing portion having at least one second hole connects the second connection portion and the first sensing portion. The first force sensor disposed in the first hole is to sense a torsional force. The second force sensor disposed in the second hole is to sense a bending force. The first sensing portion has a bending stiffness greater than that of the second sensing portion.Type: ApplicationFiled: December 27, 2022Publication date: June 29, 2023Inventors: CHIEN-NAN YEH, CHUNG-YUAN SU, CHAO-TA HUANG
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Patent number: 11610875Abstract: Disclosed is a light-emitting array structure having a substrate, a plurality of light-emitting pixel units, a plurality of first signal wires, a plurality of second signal wires, and an encapsulating layer. The light-emitting pixel units are arranged in array on the substrate. Each light-emitting pixel unit includes a driving chip, a first flat layer, a first redistribution layer, a second flat layer, a second redistribution layer, and a light-emitting diode. Each first signal wire is electrically connected to a corresponding one of the first redistribution layers and extends in a first direction. The second signal wires extend in a level different from the first signal wires. Each second signal wire is electrically connected to a corresponding one of the second redistribution layers and extends in a second direction different from the first direction. The encapsulating layer covers the light-emitting pixel units, the first and second signal wires, and the substrate.Type: GrantFiled: November 22, 2020Date of Patent: March 21, 2023Assignee: Lextar Electronics CorporationInventors: Chih-Hao Lin, Jian-Chin Liang, Chien-Nan Yeh, Shih-Lun Lai, Jo-Hsiang Chen
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Patent number: 11543312Abstract: A spindle shaft device including a shaft, a first torque sensor, and a second torque sensor. The shaft extends along an axial direction and comprises a first side portion, a second side portion, and a central portion located between the first side portion and the second side portion. The central portion has a central torsional rigidity with respect to the axial direction. The first side portion has a first torsional rigidity with respect to the axial direction. The second side portion has a second torsional rigidity with respect to the axial direction. The first torsional rigidity is smaller than the central torsional rigidity. The second torsional rigidity is smaller than the central torsional rigidity. The first torque sensor is disposed on the first side portion. The second torque sensor is disposed on the second side portion.Type: GrantFiled: April 19, 2021Date of Patent: January 3, 2023Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chien-Nan Yeh, Pei-Yu Chang, Shih-Ting Lin, Chao-Ta Huang
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Publication number: 20220398973Abstract: A display device includes a plurality of sub-pixels. The sub-pixels include a first sub-pixel and a second sub-pixel. The first sub-pixel includes a first light emitting element and a first control circuit. The first control circuit is configured to provide a first driving current to the first light emitting element. The second sub-pixel includes a second light emitting element and a second control circuit. The second control circuit is configured to provide a second driving current to the second light emitting element. The first control circuit and the second control circuit are configured to differently control pulse amplitude of the first driving current and pulse amplitude of the second driving current, such that both of the first light emitting element and the second light emitting element emit at a target wavelength or a color point range (e.g. +/?1.5˜2 nm).Type: ApplicationFiled: August 30, 2021Publication date: December 15, 2022Inventors: Chih-Hao LIN, Chien-Nan YEH, Jo-Hsiang CHEN, Shih-Lun LAI
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Patent number: 11495169Abstract: The present disclosure relates to a pixel circuit including a light emitting unit, a processing circuit and a driving circuit. The processing circuit is configured to receive a frame display signal, and is configured to calculate the frame display signal to generate a driving duty cycle corresponding to a driving period according to a driving current value. The driving circuit is electrically connected to the processing circuit and the light emitting unit, and is configured to drive the light emitting unit during the driving period according to the driving duty cycle, the driving current value and a driving frequency.Type: GrantFiled: August 2, 2021Date of Patent: November 8, 2022Assignee: Lextar Electronics CorporationInventors: Chien-Nan Yeh, Jian-Chin Liang
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Patent number: 11489089Abstract: A light emitting device includes a first light emitting cell and a second light emitting cell. Each light emitting cell includes a first semiconductor layer, a second semiconductor layer, and an active layer between the first and second semiconductor layers. The second semiconductor layer of the second light emitting cell has an exposed surface. A transparent bonding layer is located between the first and second light emitting cells. A hole is formed on the first and second light emitting cells and the transparent bonding layer. A first route metal is located on a sidewall of the hole and electrically coupled to the second semiconductor layer of the first light emitting cell and the first semiconductor layer of the second light emitting cell. The active layer of the second light emitting cell has an area greater than the active layer of the first light emitting cell.Type: GrantFiled: June 19, 2020Date of Patent: November 1, 2022Assignee: Lextar Electronics CorporationInventors: Shiou-Yi Kuo, Jian-Chin Liang, Chien-Nan Yeh
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Patent number: 11373589Abstract: A display includes first and second pixel devices. The first pixel device includes a first control circuit and a first light emitting circuit. The first control circuit generates a first light emitting signal according to a first clock signal and a data signal during a first period. The first light emitting circuit emits light according to the first light emitting signal during second and third periods. The second pixel device includes a second control circuit and a second light emitting circuit. The second control circuit generates a second light emitting signal according to a second clock signal and the data signal during the second period. The second light emitting circuit is coupled to the second control circuit and emits light according to the second light emitting signal during the third period. The first period to the third period are arranged continuously in order.Type: GrantFiled: August 9, 2021Date of Patent: June 28, 2022Assignee: Lextar Electronics CorporationInventors: Chien-Nan Yeh, Chih-Hao Lin, Cheng-Te Lin, Ku-Cheng Lin
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Publication number: 20220187149Abstract: A spindle shaft device including a shaft, a first torque sensor, and a second torque sensor. The shaft extends along an axial direction and comprises a first side portion, a second side portion, and a central portion located between the first side portion and the second side portion. The central portion has a central torsional rigidity with respect to the axial direction. The first side portion has a first torsional rigidity with respect to the axial direction. The second side portion has a second torsional rigidity with respect to the axial direction. The first torsional rigidity is smaller than the central torsional rigidity. The second torsional rigidity is smaller than the central torsional rigidity. The first torque sensor is disposed on the first side portion. The second torque sensor is disposed on the second side portion.Type: ApplicationFiled: April 19, 2021Publication date: June 16, 2022Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chien-Nan YEH, Pei-Yu CHANG, Shih-Ting LIN, Chao-Ta HUANG
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Publication number: 20220093578Abstract: Disclosed is a light-emitting array structure having a substrate, a plurality of light-emitting pixel units, a plurality of first and second signal wires, and an encapsulating layer. The light-emitting pixel units are arranged in array on the substrate. Each light-emitting pixel unit includes a driving chip, a first flat layer, a first redistribution layer, a second flat layer, a second redistribution layer, and a light-emitting diode. Each first signal wire is electrically connected to a corresponding one of the first redistribution layers and extends in a first direction. The second signal wires extend in a level different from the first signal wires. Each second signal wire is electrically connected to a corresponding one of the second redistribution layers and extends in a second direction different from the first direction. The encapsulating layer covers the light-emitting pixel units, the first and second signal wires, and the substrate.Type: ApplicationFiled: May 6, 2021Publication date: March 24, 2022Inventors: Chih-Hao LIN, Jian-Chin LIANG, Chien-Nan YEH, Shih-Lun LAI, Jo-Hsiang CHEN
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Publication number: 20220093577Abstract: Disclosed is a light-emitting array structure having a substrate, a plurality of light-emitting pixel units, a plurality of first signal wires, a plurality of second signal wires, and an encapsulating layer. The light-emitting pixel units are arranged in array on the substrate. Each light-emitting pixel unit includes a driving chip, a first flat layer, a first redistribution layer, a second flat layer, a second redistribution layer, and a light-emitting diode. Each first signal wire is electrically connected to a corresponding one of the first redistribution layers and extends in a first direction. The second signal wires extend in a level different from the first signal wires. Each second signal wire is electrically connected to a corresponding one of the second redistribution layers and extends in a second direction different from the first direction. The encapsulating layer covers the light-emitting pixel units, the first and second signal wires, and the substrate.Type: ApplicationFiled: November 22, 2020Publication date: March 24, 2022Inventors: Chih-Hao LIN, Jian-Chin LIANG, Chien-Nan YEH, Shih-Lun LAI, Jo-Hsiang CHEN
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Publication number: 20210399168Abstract: A light emitting device includes a first light emitting cell and a second light emitting cell. Each light emitting cell includes a first semiconductor layer, a second semiconductor layer, and an active layer between the first and second semiconductor layers. The second semiconductor layer of the second light emitting cell has an exposed surface. A transparent bonding layer is located between the first and second light emitting cells. A hole is formed on the first and second light emitting cells and the transparent bonding layer. A first route metal is located on a sidewall of the hole and electrically coupled to the second semiconductor layer of the first light emitting cell and the first semiconductor layer of the second light emitting cell. The active layer of the second light emitting cell has an area greater than the active layer of the first light emitting cell.Type: ApplicationFiled: June 19, 2020Publication date: December 23, 2021Inventors: Shiou-Yi KUO, Jian-Chin LIANG, Chien-Nan YEH
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Publication number: 20210366361Abstract: The present disclosure relates to a pixel circuit including a light emitting unit, a processing circuit and a driving circuit. The processing circuit is configured to receive a frame display signal, and is configured to calculate the frame display signal to generate a driving duty cycle corresponding to a driving period according to a driving current value. The driving circuit is electrically connected to the processing circuit and the light emitting unit, and is configured to drive the light emitting unit during the driving period according to the driving duty cycle, the driving current value and a driving frequency.Type: ApplicationFiled: August 2, 2021Publication date: November 25, 2021Inventors: Chien-Nan YEH, Jian-Chin LIANG
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Patent number: 11131340Abstract: A linear guideway with an embedded sensor includes a track, a slider, a plurality of rolling members, and a sensing module. The track extends in a first direction and has a first recess. The slider can move in the first direction and include a second recess, a channel, at least one hole, and a deforming region. The channel is formed by coupling the first recess and the second recess, and extends in the first direction. The hole extends from the surface of the slider along the insertion axis and into the slider. The rolling members are disposed in the channel. The sensing module is disposed in the hole, and contacts the deforming region to detect the amount of deformation.Type: GrantFiled: May 8, 2020Date of Patent: September 28, 2021Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chien-Nan Yeh, Chung-Yuan Su, Chao-Ta Huang
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Patent number: 11132936Abstract: The present disclosure relates to a pixel circuit including a light emitting unit, a processing circuit and a driving circuit. The processing circuit is configured to receive a frame display signal, and is configured to calculate the frame display signal to generate a driving duty cycle corresponding to a driving period according to a driving current value. The driving circuit is electrically connected to the processing circuit and the light emitting unit, and is configured to drive the light emitting unit during the driving period according to the driving duty cycle, the driving current value and a driving frequency.Type: GrantFiled: November 3, 2019Date of Patent: September 28, 2021Assignee: Lextar Electronics CorporationInventors: Chien-Nan Yeh, Jian-Chin Liang
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Patent number: 10962992Abstract: An apparatus with two anchors including a housing, a movable element, and a rotary element is provided. The housing includes a first expansion unit, a second expansion unit, and a linkage. First alignment structures are disposed in the movable element and anti-rotation structures are disposed in the linkage. When the movable element and the rotary element enter the housing from two ends and are coupled along an axis, the movable element and the rotary element can approach each other to expand the first expansion unit and the second expansion unit to form two anchors. The apparatus with two anchors secures a sensor in a variety of environments such as walls or machines. When the apparatus with two anchors fixes a sensor in a hole of a stamping machine, the impact force does not cause stress concentration on the sensor so as to improve the reliability of the sensor.Type: GrantFiled: December 25, 2017Date of Patent: March 30, 2021Assignee: Industrial Technology Research InstituteInventors: Chien-Nan Yeh, Chung-Yuan Su, Chih-Yuan Chen, Chao-Ta Huang, Yu-Wen Hsu
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Publication number: 20210043129Abstract: The present disclosure relates to a pixel circuit including a light emitting unit, a processing circuit and a driving circuit. The processing circuit is configured to receive a frame display signal, and is configured to calculate the frame display signal to generate a driving duty cycle corresponding to a driving period according to a driving current value. The driving circuit is electrically connected to the processing circuit and the light emitting unit, and is configured to drive the light emitting unit during the driving period according to the driving duty cycle, the driving current value and a driving frequency.Type: ApplicationFiled: November 3, 2019Publication date: February 11, 2021Inventors: Chien-Nan YEH, Jian-Chin LIANG
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Patent number: 10914368Abstract: A ball screw with force sensor in radial direction including a screw rod, a screw nut, a plurality of balls, and a force sensor is provided. The screw nut has a cavity. The cavity is extended along a radial direction from an outer surface of the screw nut. The force sensor is disposed in the cavity of the screw nut, and the force sensor includes a stationary base and an elastic component. The stationary base includes a displacement restraint, and the elastic component includes a contact end and a fixed end. The displacement restraint is coupled to the cavity to prevent the stationary base from being displaced in the radial direction for fixing stationary base firmly in the cavity. The fixed end is connected to the stationary base, and the contact end contacts a bottom surface of the cavity in order to sense a force along the radial direction.Type: GrantFiled: December 17, 2018Date of Patent: February 9, 2021Assignee: Industrial Technology Research InstituteInventors: Chih-Yuan Chen, Chung-Yuan Su, Chien-Nan Yeh, Chao-Ta Huang, Yu-Wen Hsu
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Publication number: 20210018041Abstract: A linear guideway with an embedded sensor includes a track, a slider, a plurality of rolling members, and a sensing module. The track extends in a first direction and has a first recess. The slider can move in the first direction and include a second recess, a channel, at least one hole, and a deforming region. The channel is formed by coupling the first recess and the second recess, and extends in the first direction. The hole extends from the surface of the slider along the insertion axis and into the slider. The rolling members are disposed in the channel. The sensing module is disposed in the hole, and contacts the deforming region to detect the amount of deformation.Type: ApplicationFiled: May 8, 2020Publication date: January 21, 2021Inventors: Chien-Nan YEH, Chung-Yuan SU, Chao-Ta HUANG