Patents by Inventor Yao-Wei Yang
Yao-Wei Yang 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: 11990339Abstract: A semiconductor device and method of manufacture are provided. After a patterning of a middle layer, the middle layer is removed. In order to reduce or prevent damage to other underlying layers exposed by the patterning of the middle layer and intervening layers, an inhibitor is included within an etching process in order to inhibit the amount of material removed from the underlying layers.Type: GrantFiled: August 2, 2021Date of Patent: May 21, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Jian-Jou Lian, Yao-Wen Hsu, Neng-Jye Yang, Li-Min Chen, Chia-Wei Wu, Kuan-Lin Chen, Kuo Bin Huang
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Patent number: 11909145Abstract: A detecting circuit of an external display device includes a first connector, a display circuit configured to provide a display signal to the external display device through the first connector, a switch circuit, a power supply circuit configured to provide power needed for operating the display circuit through the switch circuit when the switch circuit is on, and a control circuit configured to turn on the switch circuit upon detecting the external display device so as to connect the power supply circuit to the display circuit. When the switch circuit is on, the control circuit accumulates a duration or a number of times of detection that the external display device is continually not detected, and then turns off the switch circuit to disconnect the power circuit from the display circuit when the duration reaches a time threshold or the number of times of detection reaches a count threshold.Type: GrantFiled: January 13, 2023Date of Patent: February 20, 2024Assignee: GETAC TECHNOLOGY CORPORATIONInventors: Kuan-Yu Chen, Yao-Wei Yang, Hsueh-Mao Cheng
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Publication number: 20240030799Abstract: A control circuit for controlling a DC-DC converter is provided. The control circuit comprises a first sensor, second sensor, error amplifier, signal conditioning circuit, first comparison circuit, second comparison circuit, and driver circuit. The error amplifier is configured to receive a feedback voltage and a reference voltage for generating a first voltage. The signal conditioning circuit is configured to receive the first voltage for generating a second voltage and a third voltage. The first comparison circuit is configured to make a comparison based on a first sensing signal from the first sensor and the second voltage for generating a first comparison signal. The second comparison circuit is configured to make a comparison based on a second sensing signal from the second sensor and the third voltage for generating a second comparison signal. The driver circuit is for driving a power stage according to the first and second comparison signals.Type: ApplicationFiled: July 25, 2022Publication date: January 25, 2024Inventor: YAO-WEI YANG
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Publication number: 20230237975Abstract: A detecting circuit of an external display device includes a first connector, a display circuit configured to provide a display signal to the external display device through the first connector, a switch circuit, a power supply circuit configured to provide power needed for operating the display circuit through the switch circuit when the switch circuit is on, and a control circuit configured to turn on the switch circuit upon detecting the external display device so as to connect the power supply circuit to the display circuit. When the switch circuit is on, the control circuit accumulates a duration or a number of times of detection that the external display device is continually not detected, and then turns off the switch circuit to disconnect the power circuit from the display circuit when the duration reaches a time threshold or the number of times of detection reaches a count threshold.Type: ApplicationFiled: January 13, 2023Publication date: July 27, 2023Inventors: Kuan-Yu Chen, Yao-Wei Yang, Hsueh-Mao Cheng
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Publication number: 20230208180Abstract: A linear charger includes a constant current charging circuit and a thermal regulation circuit. The constant current charging circuit is arranged to generate a charging current, and includes a first transconductance amplifier, wherein the first transconductance amplifier has a positive terminal, a negative terminal, and an output terminal. The thermal regulation circuit is coupled to the output terminal and the negative terminal of the first transconductance amplifier, and is arranged to generate and modulate a thermal regulation current and an amplifier reference voltage with temperature, and transmit the thermal regulation current and the amplifier reference voltage to the output terminal and the negative terminal of the first transconductance amplifier, respectively.Type: ApplicationFiled: December 23, 2021Publication date: June 29, 2023Applicant: Elite Semiconductor Microelectronics Technology Inc.Inventor: Yao-Wei Yang
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Patent number: 11557694Abstract: A light emitting device includes: a plurality of light emitting stacked layers, including a first surface and a second surface, wherein the second surface is electrically opposite to the first surface; a mesa structure; a current blocking layer disposed on the first surface, including a sidewall; and a transparent conductive layer disposed on the first surface; and a first pad electrode, disposed on the transparent conductive layer and on the first surface; wherein a retract distance of the transparent conductive layer with respect to an edge of the mesa structure is less than 3 ?m; and wherein a retract distance of the transparent conductive layer with respect to an edge of the sidewall of the current blocking layer is less than 3 ?m.Type: GrantFiled: February 19, 2021Date of Patent: January 17, 2023Assignee: EPISTAR CORPORATIONInventors: Chien Cheng Huang, Kuo-Wei Yen, Yu-Wei Kuo, Yao-Wei Yang, Pei-Hsiang Tseng
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Patent number: 11209850Abstract: A termination voltage regulation apparatus with transient response enhancement includes a termination voltage regulator and a transient response enhancer. The termination voltage regulator provides a termination voltage at a termination voltage terminal, including first and second switching units. The transient response enhancer, coupled to the termination voltage regulator, is utilized for enhancing transient response of the termination voltage regulator, including a first enhancement circuit for sensing a first signal associated with the first switching unit and enabling a first control terminal of the first switching unit to be at a first voltage in response to the first signal in a sinking mode; and a second enhancement circuit for sensing a second signal associated with the second switching unit and enabling a second control terminal of the second switching unit to be at a second voltage in response to the second signal in a sourcing mode.Type: GrantFiled: February 14, 2020Date of Patent: December 28, 2021Assignee: ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC.Inventor: Yao-Wei Yang
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Publication number: 20210255652Abstract: A termination voltage regulation apparatus with transient response enhancement includes a termination voltage regulator and a transient response enhancer. The termination voltage regulator provides a termination voltage at a termination voltage terminal, including first and second switching units. The transient response enhancer, coupled to the termination voltage regulator, is utilized for enhancing transient response of the termination voltage regulator, including a first enhancement circuit for sensing a first signal associated with the first switching unit and enabling a first control terminal of the first switching unit to be at a first voltage in response to the first signal in a sinking mode; and a second enhancement circuit for sensing a second signal associated with the second switching unit and enabling a second control terminal of the second switching unit to be at a second voltage in response to the second signal in a sourcing mode.Type: ApplicationFiled: February 14, 2020Publication date: August 19, 2021Inventor: Yao-Wei Yang
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Publication number: 20210249561Abstract: A light emitting device includes: a plurality of light emitting stacked layers, including a first surface and a second surface, wherein the second surface is electrically opposite to the first surface; a mesa structure; a current blocking layer disposed on the first surface, including a sidewall; and a transparent conductive layer disposed on the first surface; and a first pad electrode, disposed on the transparent conductive layer and on the first surface; wherein a retract distance of the transparent conductive layer with respect to an edge of the mesa structure is less than 3 ?m; and wherein a retract distance of the transparent conductive layer with respect to an edge of the sidewall of the current blocking layer is less than 3 ?m.Type: ApplicationFiled: February 19, 2021Publication date: August 12, 2021Inventors: Chien Cheng HUANG, Kuo-Wei YEN, Yu-Wei KUO, Yao-Wei YANG, Pei-Hsiang TSENG
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Patent number: 10930818Abstract: A light emitting device includes: a plurality of light emitting stacked layers, including a first surface and a second surface, wherein the second surface is electrically opposite to the first surface; a mesa structure; and a current blocking (CB) layer disposed on the first surface; a transparent conductive layer disposed on or above the first surface; and a first pad electrode, disposed on the transparent conductive layer and on the first surface; wherein a sidewall of the CB layer comprises a first surface section and a second surface section having different slopes.Type: GrantFiled: July 6, 2018Date of Patent: February 23, 2021Assignee: EPISTAR CORPORATIONInventors: Chien Cheng Huang, Kuo-Wei Yen, Yu-Wei Kuo, Yao-Wei Yang, Pei-Hsiang Tseng
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Patent number: 10684723Abstract: A touch device includes a touch sensing unit, a processing unit, an embedded controller and a digital controller. The touch sensing unit has a first control mode and a second control mode, and senses a touch event from a touch stylus. The embedded controller is coupled to the processing unit. The digital controller is coupled to the touch sensing unit, the embedded controller and the processing unit, and receives a general-purpose input/output (GPIO) signal from the embedded controller. When the GPIO signal is in a first value, the digital controller reports the first control mode to the processing unit. When the GPIO signal is in a second value, the digital processor reports the second control mode to the processing unit. Thus, the performance of the touch device and the touch stylus is improved.Type: GrantFiled: October 23, 2018Date of Patent: June 16, 2020Assignee: GETAC TECHNOLOGY CORPORATIONInventors: Chui-Hsien Li, Chin-Jung Chang, Yao-Wei Yang
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Publication number: 20200125208Abstract: A touch device includes a touch sensing unit, a processing unit, an embedded controller and a digital controller. The touch sensing unit has a first control mode and a second control mode, and senses a touch event from a touch stylus. The embedded controller is coupled to the processing unit. The digital controller is coupled to the touch sensing unit, the embedded controller and the processing unit, and receives a general-purpose input/output (GPIO) signal from the embedded controller. When the GPIO signal is in a first value, the digital controller reports the first control mode to the processing unit. When the GPIO signal is in a second value, the digital processor reports the second control mode to the processing unit. Thus, the performance of the touch device and the touch stylus is improved.Type: ApplicationFiled: October 23, 2018Publication date: April 23, 2020Inventors: Chui-Hsien LI, Chin-Jung CHANG, Yao-Wei YANG
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Patent number: 10256722Abstract: An oscillator includes a reference current generating circuit, a modulator circuit, and an oscillating circuit. The reference current generating circuit generates a first reference current. The modulator circuit generates a modulation current according to the first reference current and a feedback voltage, wherein the modulation current is negatively correlated with the feedback voltage. The oscillating circuit receives at least the modulation current, and generates an oscillating signal with an oscillating frequency according to at least the modulation current, wherein the oscillating frequency is varied according to the modulation current. The oscillator may be employed by a direct current (DC)-to-DC voltage converter.Type: GrantFiled: November 8, 2017Date of Patent: April 9, 2019Assignee: Elite Semiconductor Memory Technology Inc.Inventor: Yao-Wei Yang
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Publication number: 20180315888Abstract: A light emitting device includes: a plurality of light emitting stacked layers, including a first surface and a second surface, wherein the second surface is electrically opposite to the first surface; a mesa structure; and a current blocking (CB) layer disposed on the first surface; a transparent conductive layer disposed on or above the first surface; and a first pad electrode, disposed on the transparent conductive layer and on the first surface; wherein a sidewall of the CB layer comprises a first surface section and a second surface section having different slopes.Type: ApplicationFiled: July 6, 2018Publication date: November 1, 2018Inventors: CHIEN CHENG HUANG, KUO-WEI YEN, YU-WEI KUO, YAO-WEI YANG, PEI-HSIANG TSENG
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Publication number: 20180261964Abstract: An electronic device includes a first electronic component and a second electronic component. The first electronic component includes a control unit and a first connector. A first pin group of the first connector includes an even number of first detect pins. The second electronic component includes a second connector that matches with the first connector. A second pin group of the second connector includes an even number of second detect pins. When the first connector is electrically connected to the second connector, each of the first detect pins is electrically connected to each of the second detect pins to form a conductive path. All of the first detection pins and the second detection pins connected with one another in series form the conductive path. And a first end of the conductive path is coupled to ground via one of the first detect pins. A second end of the conductive path is coupled to the control unit via another one of the first detect pins.Type: ApplicationFiled: December 20, 2017Publication date: September 13, 2018Inventors: Chin-Jung Chang, Chui-Shien Li, Yao-Wei Yang
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Patent number: 10074949Abstract: An electronic device includes a first electronic component and a second electronic component. The first electronic component includes a control unit and a first connector. A first pin group of the first connector includes an even number of first detect pins. The second electronic component includes a second connector that matches with the first connector. A second pin group of the second connector includes an even number of second detect pins. When the first connector is electrically connected to the second connector, each of the first detect pins is electrically connected to each of the second detect pins to form a conductive path. All of the first detection pins and the second detection pins connected with one another in series form the conductive path. And a first end of the conductive path is coupled to ground via one of the first detect pins. A second end of the conductive path is coupled to the control unit via another one of the first detect pins.Type: GrantFiled: December 20, 2017Date of Patent: September 11, 2018Assignee: GETAC TECHNOLOGY CORPORATIONInventors: Chin-Jung Chang, Chui-Shien Li, Yao-Wei Yang
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Patent number: 10043945Abstract: A method for fabricating a light emitting device, comprising: forming a plurality of light emitting stacked layers above a substrate; forming and patterning a current blocking (CB) layer on the light emitting stacked layers; forming a transparent conductive layer covering the light emitting stacked layers and the current blocking layer; etching the transparent conductive layer and exposing a reserved region for a first pad electrode and a mesa structure, respectively; and etching an exposed portion of the light emitting stacked layers and a portion of the current blocking layer to form a remaining current blocking layer, the mesa structure and a first opening.Type: GrantFiled: June 18, 2017Date of Patent: August 7, 2018Assignee: EPISTAR CORPORATIONInventors: Chien Cheng Huang, Kuo-Wei Yen, Yu-Wei Kuo, Yao-Wei Yang, Pei-Hsiang Tseng
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Patent number: 10008930Abstract: A bootstrap circuit applied to a first transistor of a direct-current (DC) to DC converter includes a second transistor, a bootstrapping capacitor and a clamping circuit, wherein the bootstrapping capacitor has a first terminal and a second terminal, and the first terminal is coupled to a source terminal of a transistor, and the source terminal of the second transistor is coupled to the first transistor; and the clamping circuit is coupled between a gate terminal of the second transistor and the second terminal of the bootstrapping capacitor, and is arranged to maintain a voltage drop between the second terminal of the bootstrapping capacitor and the gate terminal of the second transistor. A drain terminal of the second transistor is coupled to a first reference voltage, and a maximum of a voltage level of the gate terminal of the first transistor is greater than the first reference voltage.Type: GrantFiled: November 7, 2017Date of Patent: June 26, 2018Assignee: Elite Semiconductor Memory Technology Inc.Inventor: Yao-Wei Yang
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Publication number: 20170294558Abstract: A method for fabricating a light emitting device, comprising: forming a plurality of light emitting stacked layers above a substrate; forming and patterning a current blocking (CB) layer on the light emitting stacked layers; forming a transparent conductive layer covering the light emitting stacked layers and the current blocking layer; etching the transparent conductive layer and exposing a reserved region for a first pad electrode and a mesa structure, respectively; and etching an exposed portion of the light emitting stacked layers and a portion of the current blocking layer to form a remaining current blocking layer, the mesa structure and a first opening.Type: ApplicationFiled: June 18, 2017Publication date: October 12, 2017Inventors: CHIEN CHENG HUANG, KUO-WEI YEN, YU-WEI KUO, YAO-WEI YANG, PEI-HSIANG TSENG
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Patent number: 9705035Abstract: A light emitting device, includes a substrate; a plurality of light emitting stacked layers, comprising a first surface and a second surface; a mesa structure; a current blocking (CB) layer; a transparent conductive layer; a first pad electrode and a second pad electrode; and a passivation layer, wherein the second surface is electrically opposite to the first surface, the transparent conductive layer is disposed on or above the first surface, the first pad electrode is disposed on the transparent conductive layer and on the first surface, and the second pad electrode is disposed on the second surface and on the mesa structure, the CB layer is disposed on the first surface, surrounded by the transparent conductive layer, and at a lower region of the first pad electrode, a portion of the first pad electrode is filling a first opening of the transparent conductive layer and the CB layer.Type: GrantFiled: December 30, 2015Date of Patent: July 11, 2017Assignee: Epistar CorporationInventors: Chien Cheng Huang, Kuo-Wei Yen, Yu-Wei Kuo, Yao-Wei Yang, Pei-Hsiang Tseng