Patents by Inventor Hsuan LO
Hsuan LO 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: 9903748Abstract: A liquid level sensor and a method for sensing a liquid level adapated to a liquid storage container are provided. The liquid level sensor includes a pluraity of sensing electrodes and a liquid level determining circuit. The sensing electrodes are arranged on a side wall of the liquid storage container, and correspond to different liquid levels. The liquid level determining circuit is coupled to the sensing electrodes, and scans capacitance values of the sensing electrodes, so as to determine a liquid level of a liquid in the liquid storage container based on the current capacitance values of the sensing electrodes.Type: GrantFiled: October 18, 2016Date of Patent: February 27, 2018Assignee: ITE Tech. Inc.Inventor: Chih-Hsuan Lo
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Patent number: 9257421Abstract: The present invention discloses a transient voltage suppression (TVS) device and a manufacturing method thereof. The TVS device limits a voltage drop between two terminals thereof not to exceed a clamp voltage. The TVS device is formed in a stack substrate including a semiconductor substrate, a P-type first epitaxial layer, and a second epitaxial layer stacked in sequence. In the TVS device, a first PN diode is connected to a Zener diode in series, wherein the series circuit is surrounded by a first shallow trench isolation (STI) region; and a second PN diode is connected in parallel to the series circuit, wherein the second PN diode is surrounded by a second STI region. The first STI region and the second STI region both extend from an upper surface to the second epitaxial layer, but not to the first epitaxial layer.Type: GrantFiled: June 2, 2015Date of Patent: February 9, 2016Assignee: RICHTEK TECHNOLOGY CORPORATIONInventors: Tsung-Yi Huang, Kuo-Hsuan Lo, Wu-Te Weng
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Publication number: 20150364460Abstract: The present invention discloses a transient voltage suppression (TVS) device and a manufacturing method thereof. The TVS device limits a voltage drop between two terminals thereof not to exceed a clamp voltage. The TVS device is formed in a stack substrate including a semiconductor substrate, a P-type first epitaxial layer, and a second epitaxial layer stacked in sequence. In the TVS device, a first PN diode is connected to a Zener diode in series, wherein the series circuit is surrounded by a first shallow trench isolation (STI) region; and a second PN diode is connected in parallel to the series circuit, wherein the second PN diode is surrounded by a second STI region. The first STI region and the second STI region both extend from an upper surface to the second epitaxial layer, but not to the first epitaxial layer.Type: ApplicationFiled: June 2, 2015Publication date: December 17, 2015Applicant: RICHTEK TECHNOLOGY CORPORATIONInventors: Tsung-Yi Huang, Kuo-Hsuan Lo, Wu-Te Weng
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Patent number: 9105656Abstract: The present invention discloses a high voltage device and a manufacturing method thereof. The high voltage device includes: a first conductive type substrate in which isolation regions are formed for defining a device region; agate formed on the first conductive type substrate; a source and a drain formed in the device region and located at both sides of the gate respectively, and doped with second conductive type impurities; a second conductive type well, which is formed in the first conductive type substrate, and surrounds the drain from top view; and a first deep trench isolation structure, which is formed in the first conductive type substrate, and is located in the second conductive type well between the source and the drain from top view, wherein the depth of the first deep trench isolation structure is deeper than the second conductive type well from the cross-sectional view.Type: GrantFiled: October 16, 2013Date of Patent: August 11, 2015Assignee: RICHTEK TECHNOLOGY CORPORATIONInventors: Tsung-Yi Huang, Kuo-Hsuan Lo
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Patent number: 9047805Abstract: A driving method of pixels of a display panel is provided, which is adapted to drive a pixel of the display panel corresponding to a target grey-level of a display frame. In this method, a first pixel voltage is applied to the pixel during a first display period. At least one second pixel voltage is applied to the pixel during a second display period. The first and second display periods correspond to the display frame, and an enabling duration of the second display period is longer than the enabling duration of the first display period. When the target grey-level is not equal to a limit grey-level, the grey-level corresponding to the pixel voltage is different from the grey-level corresponding to the second pixel voltages. A sum of optical effects of the pixel during the first and second display periods is equal to the optical effect of the target grey-level.Type: GrantFiled: December 12, 2012Date of Patent: June 2, 2015Assignee: Au Optronics CorporationInventors: Yung-Jen Chen, Hsin-Hsuan Lo, Chieh-Teng Chang, Hui-Ling Wang
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Publication number: 20140333369Abstract: A key module and a signal generating method of the key module are provided. The key module is suitable for an electronic device, the electronic device has a processing system, and the key module includes a detecting module and a controller. The detecting module includes a main electrode conductor and an assisting electrode conductor, where the assisting electrode conductor is disposed around the main electrode conductor. The controller is coupled to the main electrode conductor and the assisting electrode conductor. When the controller determines that a touch is detected by the main electrode conductor, but not detected by the assisting electrode conductor, the controller transmits a key signal to the processing system.Type: ApplicationFiled: February 10, 2014Publication date: November 13, 2014Applicant: ITE Tech. Inc.Inventor: Chih-Hsuan Lo
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Publication number: 20140063076Abstract: A driving method of pixels of a display panel is provided, which is adapted to drive a pixel of the display panel corresponding to a target grey-level of a display frame. In this method, a first pixel voltage is applied to the pixel during a first display period. At least one second pixel voltage is applied to the pixel during a second display period. The first and second display periods correspond to the display frame, and an enabling duration of the second display period is longer than the enabling duration of the first display period. When the target grey-level is not equal to a limit grey-level, the grey-level corresponding to the pixel voltage is different from the grey-level corresponding to the second pixel voltages. A sum of optical effects of the pixel during the first and second display periods is equal to the optical effect of the target grey-level.Type: ApplicationFiled: December 12, 2012Publication date: March 6, 2014Applicant: AU OPTRONICS CORPORATIONInventors: Yung-Jen Chen, Hsin-Hsuan Lo, Chieh-Teng Chang, Hui-Ling Wang
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Publication number: 20140045313Abstract: The present invention discloses a high voltage device and a manufacturing method thereof. The high voltage device includes: a first conductive type substrate in which isolation regions are formed for defining a device region; agate formed on the first conductive type substrate; a source and a drain formed in the device region and located at both sides of the gate respectively, and doped with second conductive type impurities; a second conductive type well, which is formed in the first conductive type substrate, and surrounds the drain from top view; and a first deep trench isolation structure, which is formed in the first conductive type substrate, and is located in the second conductive type well between the source and the drain from top view, wherein the depth of the first deep trench isolation structure is deeper than the second conductive type well from the cross-sectional view.Type: ApplicationFiled: October 16, 2013Publication date: February 13, 2014Applicant: RICHTEK TECHNOLOGY CORPORATIONInventors: Tsung-Yi Huang, Kuo-Hsuan Lo
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Patent number: 8643136Abstract: The present invention discloses a high voltage device and a manufacturing method thereof. The high voltage device includes: a first conductive type substrate in which isolation regions are formed for defining a device region; a gate formed on the first conductive type substrate; a source and a drain formed in the device region and located at both sides of the gate respectively, and doped with second conductive type impurities; a second conductive type well, which is formed in the first conductive type substrate, and surrounds the drain from top view; and a first deep trench isolation structure, which is formed in the first conductive type substrate, and is located in the second conductive type well between the source and the drain from top view, wherein the depth of the first deep trench isolation structure is deeper than the second conductive type well from the cross-sectional view.Type: GrantFiled: March 1, 2011Date of Patent: February 4, 2014Assignee: Richtek Technology CorporationInventors: Tsung-Yi Huang, Kuo-Hsuan Lo
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Publication number: 20120223384Abstract: The present invention discloses a high voltage device and a manufacturing method thereof. The high voltage device includes: a first conductive type substrate in which isolation regions are formed for defining a device region; a gate formed on the first conductive type substrate; a source and a drain formed in the device region and located at both sides of the gate respectively, and doped with second conductive type impurities; a second conductive type well, which is formed in the first conductive type substrate, and surrounds the drain from top view; and a first deep trench isolation structure, which is formed in the first conductive type substrate, and is located in the second conductive type well between the source and the drain from top view, wherein the depth of the first deep trench isolation structure is deeper than the second conductive type well from the cross-sectional view.Type: ApplicationFiled: March 1, 2011Publication date: September 6, 2012Inventors: TSUNG-YI HUANG, Kuo-Hsuan Lo
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Publication number: 20120181653Abstract: The present invention discloses a semiconductor PN junction structure and a manufacturing method thereof. From top view, the PN junction includes a staggered comb-teeth structure. The PN junction forms a depletion region with enhanced breakdown voltage, hence broadening the applications of a semiconductor device having such PN junction.Type: ApplicationFiled: January 13, 2011Publication date: July 19, 2012Inventors: TSUNG-YI HUANG, Hung-Der Su, Kuo-Cheng Chang, Chun-Yi Hung, Kuo-Hsuan Lo, Jeng Gong
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Publication number: 20120074380Abstract: A white light emitting diode (LED) and method for forming the white LED are provided, wherein a semiconductor material is formed directly with a epitaxial method on a GaN epitaxial structure. The semiconductor material is a doped II-VI semiconductor compound with a broad FWHM (Full Width at Half Maximum) compared to conventional phosphor, can provide a white LED with better color rendering.Type: ApplicationFiled: September 27, 2011Publication date: March 29, 2012Applicant: CHUNG YUAN CHRISTIAN UNIVERSITYInventors: Jyh-Shyang Wang, Wei-Jie Chen, Wei-Hsuan Lo, Ren-Hao Chen
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Publication number: 20120058399Abstract: A branched polymer represented by formula (I): wherein at least one of L1, L2, L3, and L4 is a univalent organic group represented by formula (II): wherein L5, L6 and L7 are independently hydrogen or a univalent organic group, D1, D2 and D3 being independently a single bond or a divalent group, at least one of D1, D2, and D3 containing in which R1 is hydrogen or a methyl group and n is an integer ranging from 1 to 1000; and the remainder of L1, L2, L3, and L4 being independently hydrogen or a univalent organic group represented by formula (III): wherein R is a univalent end group, with the proviso that, when one of the remainder is hydrogen, the others of the remainder cannot be hydrogen.Type: ApplicationFiled: September 2, 2011Publication date: March 8, 2012Applicant: National Taipei University of TechnologyInventors: Kuo-Chung Cheng, Chia-Chun Wang, Chiu-Ya Wang, Wen-Wu Li, Shao-Hsuan Lo
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Publication number: 20090021478Abstract: A switching device and method for a portable display product includes a screen inserted on a body. A thicker handle is formed on one side of the body. Close to the center of one side of the screen, the handle disposes a main key, which is used most frequently. The side end of the handle is divided into an upper part and a lower part centered around the main key. Each part disposes a key unit, and the upper key unit is used more frequently. A control system disposed inside the body switches a display direction of the screen and function locations of the two key units for the convenience of one-handed operation.Type: ApplicationFiled: January 21, 2008Publication date: January 22, 2009Inventors: Wen-Jing Lin, Chen-Hsuan Lo
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Patent number: 7225753Abstract: A bell device includes a housing having two housing members secured together, and one or more peripherals rib extended into an opening of the housing, a securing device includes a shank engaged in the opening of the housing, and includes a peripheral flange extended from the shank for engaging with the peripheral rib of the housing and for anchoring the shank to the housing when the two housing members are assembled together, a bell member is supported in the housing with the securing device, a clapper includes a stem pivotally attached to the securing device and a striking member for striking onto the bell member. A push rod may actuate the clapper to strike onto the bell member.Type: GrantFiled: December 28, 2005Date of Patent: June 5, 2007Inventor: Yi Hsuan Lo
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Publication number: 20060066445Abstract: This invention provides an emergency contact apparatus used in mobile communication. The emergency contact apparatus includes a memory device, a triggering device, a position responding device, and a transmitting device. The memory device is used for storing contact group information and an emergency message. The triggering device is used for generating a trigger signal. The position responding device is used for receiving the trigger signal and generating current position information. The transmitting device is connected to the memory device, the triggering device, and the position responding device. The transmitting device is used for receiving the trigger signal and transmitting the emergency message and the position information based on the contact group information.Type: ApplicationFiled: September 28, 2005Publication date: March 30, 2006Inventor: Tzu-Hsuan Lo
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Publication number: 20020122415Abstract: The invention discloses an Internet phone transmitting signals through a USB interface, which comprises a thin client and a digital phone. The USB interface connects the thin client and the digital phone. The phone communication is achieved through the online function of the thin client. The voice message sending procedure transmits outgoing message signals to the thin client through the USB interface. The thin client converts the outgoing message signals into an outgoing message VOIP package. The outgoing message VOIP package is then transmitted through a network to a target. The voice message receiving procedure transmits an incoming message VOIP package from the target back to the thin client through the network and converts the incoming message VOIP package into incoming message signals. Further through the USB interface, the incoming message signals are transmitted to the digital phone.Type: ApplicationFiled: March 1, 2001Publication date: September 5, 2002Inventors: Ju-Nan Chang, Kuo-Hsuan Lo, Shao-Yang Chuang