Patents by Inventor Liann-Be Chang
Liann-Be Chang 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: 11303117Abstract: An apparatus of preventing ESD and EMP coupled between a signal input and a signal output is provided with a first diode of forward bias including a positive terminal and a negative terminal connected to the signal input and ground respectively; and a first diode of reverse bias including a negative terminal and a positive terminal connected to the signal input and the ground respectively. The semiconductor is a diode including a p-type semiconductor region made of semiconductor material having a predetermined band gap and an n-type semiconductor region made of semiconductor material having a predetermined band gap. The predetermined band gap is greater than 3 eV. The diode operates in forward bias to discharge current generated by ESD and/or EMP. A method of preventing ESD and EMP is also provided.Type: GrantFiled: July 17, 2020Date of Patent: April 12, 2022Assignee: Chang Gung UniversityInventor: Liann-Be Chang
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Publication number: 20210036511Abstract: An apparatus of preventing ESD and EMP coupled between a signal input and a signal output is provided with a first diode of forward bias including a positive terminal and a negative terminal connected to the signal input and ground respectively; and a first diode of reverse bias including a negative terminal and a positive terminal connected to the signal input and the ground respectively. The semiconductor is a diode including a p-type semiconductor region made of semiconductor material having a predetermined band gap and an n-type semiconductor region made of semiconductor material having a predetermined band gap. The predetermined band gap is greater than 3 eV. The diode operates in forward bias to discharge current generated by ESD and/or EMP. A method of preventing ESD and EMP is also provided.Type: ApplicationFiled: July 17, 2020Publication date: February 4, 2021Applicant: Chang Gung UniversityInventor: Liann-Be Chang
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Patent number: 9299527Abstract: An novelly designed gas discharge tube (GDT) comprising at least two electrodes and at least one hollow insulating ring fastened to at least one of the electrodes, wherein the hollow insulating ring has an inductive property or a variable resistance property, thereby the new gas discharge tube can provide another possibility of a circuit design.Type: GrantFiled: December 27, 2012Date of Patent: March 29, 2016Assignee: CHANG GUNG UNIVERSITYInventor: Liann-Be Chang
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Patent number: 9171990Abstract: A method of hybrid stacked Flip chip for a solar cell onto which semiconductor layers of different materials are stacked in the Flip chip technology to solve the problem of lattices mismatch between the layers for further increase of the efficiency of solar cell.Type: GrantFiled: September 24, 2013Date of Patent: October 27, 2015Assignee: CHANG GUNG UNIVERSITYInventors: Liann-Be Chang, Yu-Lin Lee
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Publication number: 20150147240Abstract: An LED lamp is provided with at least one LED each including an epoxy lens, cathode and anode leads; a reflective cup, a LED chip, and a wire bond; a housing for accommodating a circuit board, the at least one LED mounted on the circuit board, and a fan; openings on the housing; groups of photocatalyst agents coated on areas lit by the LED chip wherein the photocatalyst agents are TiO2 having a particle size in the range of 50 and 300 nano meters; and layers of fluorescent substance coated on areas lit by the LED chip wherein emitted light impinges the layers of fluorescent substance to generate fluorescent light, and wherein white light is generated when emitted light mixes with the fluorescent light. The LED lamp has the functions of disinfection, deodorization, and mildew proofing.Type: ApplicationFiled: December 4, 2014Publication date: May 28, 2015Inventors: Liann-Be Chang, Fu-Cheng Chuang, Shih-Huan Huang
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Publication number: 20150122310Abstract: A concentrated photovoltaic (CPV) cell module, comprising: a shell; a Fresnel lens set, provided on top of said shell; a first solar cell, provided on bottom of said shell and opposite to said Fresnel lens set; and at least a second solar cell, provided on surrounding wall and / or bottom of said shell, so that area originally not capable of generating power is able to generate power, to raise power generating capacity per unit area of said concentrated photovoltaic (CPV) cell module.Type: ApplicationFiled: January 8, 2015Publication date: May 7, 2015Inventors: Liann-Be CHANG, Hsin-Chien CHEN, Chun-Yi TUNG, Fu-Ciang YANG
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Patent number: 8901678Abstract: A light-assisted biochemical sensor based on a light addressable potentiometric sensor is disclosed. The light-assisted biochemical sensor comprises a semiconductor substrate and a sensing layer, which are used to detect the specific ion concentration or the biological substance concentration of a detected solution. Lighting elements fabricated directly on the back surface of the semiconductor substrate directly illuminate the light to the semiconductor substrate, so as to enhance the photoconduction property of the semiconductor substrate. And then, the hysteresis and the sensing sensitivity of the light-assisted biochemical sensor are respectively reduced and improved. In addition, due to its characteristics of integration, the light-assisted biochemical sensor not only reduces the fabrication cost but also has portable properties and real-time detectable properties. As a result, its detection range and the application range are wider.Type: GrantFiled: December 16, 2010Date of Patent: December 2, 2014Assignee: Chang Gung UniversityInventors: Liann-Be Chang, Chao-Sung Lai, Po-Chuan Chen
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Publication number: 20140256307Abstract: A combination device with a long distance remote cell phone, having functional control items and being mix-operated by voice and touch, and a receiving switching controller, comprising a parental control cell phone, having functional control items and being mix-operated by voice and touch and a receiving switching controller, is provided. The receiving switching controller receives messages and compares phone numbers or web addresses of a white list to allow follow-up tasks or communications, which comprise corresponding decoding, activating video communication, multi-functional code storage, and corresponding output by driving circuit and relay.Type: ApplicationFiled: March 11, 2013Publication date: September 11, 2014Applicant: Waveshielding Technology Co., Ltd.Inventor: Liann-Be Chang
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Patent number: 8823157Abstract: A three dimensional (3-D) light-emitting-diode (LED) stack and method of manufacturing the same, comprising: a substrate; at least a first LED, stacked on said substrate; and at least a second LED, stacked on said first LED, such that energy gap of said first LED is smaller than energy gap of said second LED. In said stack mentioned above, a material of larger energy gap capable of emitting light of shorter wavelength can be penetrated by lights emitted by another material of smaller energy gap capable emitting lights of longer wavelength, such that lights are mixed together and then emitted, and said materials are put into a three dimensional stack arrangement, to form a brand new light emitting device of mixed light, so as to emit lights as required.Type: GrantFiled: June 6, 2012Date of Patent: September 2, 2014Assignee: Chang Gung UniversityInventors: Liann-Be Chang, Jun-Yui Chen
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Patent number: 8820974Abstract: An LED light bulb, mainly comprising: an LED module, provided with a first connection portion; a circuit driving module, provided with a second connection portion, said first connection portion is connected to said second connection portion; and a lamp hood covered over said LED module. As such, said LED module or said circuit driving module can be replaced readily when they are found broken down, without the need to discard entire set of LED light bulb, hereby eliminating unnecessary waste, in achieving both cost effectiveness and environment protection.Type: GrantFiled: March 15, 2012Date of Patent: September 2, 2014Assignee: Chang Gung UniversityInventors: Liann-Be Chang, Chia-Yi Yen
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Publication number: 20140184064Abstract: An novelly designed gas discharge tube (GDT) comprising at least two electrodes and at least one hollow insulating ring fastened to at least one of the electrodes, wherein the hollow insulating ring has an inductive property or a variable resistance property, thereby the new gas discharge tube can provide another possibility of a circuit design.Type: ApplicationFiled: December 27, 2012Publication date: July 3, 2014Applicant: CHANG GUNG UNIVERSITYInventor: Liann-Be CHANG
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Publication number: 20140093995Abstract: A method of hybrid stacked Chip for a solar cell onto which semiconductor layers of different materials is provided by stacking tunnel layer and bumps in order to solve the problem of lattices mismatch between the layers for further increasing of the efficiency of solar cell. Electric charges (i.e., current) generated by respective solar cells can be outputted by means of contacts. Further total power P is defined by a summation of powers of respective solar cells, i.e., V1I1+V2I2+ . . . VnIn. This is a great increase in comparison with the power of conventional solar cells connected in series.Type: ApplicationFiled: November 26, 2013Publication date: April 3, 2014Applicant: Chang Gung UniversityInventors: Liann-Be Chang, Yu-Lin Lee
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Patent number: 8686395Abstract: A bond type flip-chip light-emitting structure and method of manufacturing the same. Firstly, form a positive electrode and a negative electrode on an epitaxy layer. Next, deposit an insulation layer on parts of the positive electrode and negative electrode, to expose respectively a positive electrode via hole and a negative electrode via hole. Then, form a bonded metal layer on the insulation layer, the positive electrode via hole, and the negative electrode via hole, so that the positive electrode and the negative electrode are on a same plane by means of the bonded metal layer. Finally, on a substrate, bond the first metal layer and the second metal layer onto the corresponding first bonded metal unit and the second bonded metal unit of the bonded metal layer, to form into shape, thus realizing a bond type flip-chip light-emitting structure.Type: GrantFiled: February 25, 2013Date of Patent: April 1, 2014Assignee: Chang Gung UniversityInventors: Liann-Be Chang, Chen Xu, Kun Xu, Yunyun Zhang, How-Wen Chien
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Publication number: 20140024169Abstract: A method of hybrid stacked Flip chip for a solar cell onto which semiconductor layers of different materials are stacked in the Flip chip technology to solve the problem of lattices mismatch between the layers for further increase of the efficiency of solar cell.Type: ApplicationFiled: September 24, 2013Publication date: January 23, 2014Applicant: Chang Gung UniversityInventors: Liann-Be Chang, Yu-Lin Lee
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Patent number: 8605404Abstract: The present invention discloses a cascade EMP protection circuit, which comprises an LEMP protection circuit and a fast-response protection circuit, wherein a symmetric capacitive varactor element is cascaded to the path of signal transmission. Thereby, the present invention can protect electronic devices against LEMP or EMP released by an electronic weapon (NEMP, HEMP, or PEMP).Type: GrantFiled: June 8, 2011Date of Patent: December 10, 2013Assignee: Chang Gung UniversityInventors: Liann-Be Chang, Jiun Yuh Chen
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Publication number: 20130234105Abstract: A bond type flip-chip light-emitting structure and method of manufacturing the same. Firstly, form a positive electrode and a negative electrode on an epitaxy layer. Next, deposit an insulation layer on parts of the positive electrode and negative electrode, to expose respectively a positive electrode via hole and a negative electrode via hole. Then, form a bonded metal layer on the insulation layer, the positive electrode via hole, and the negative electrode via hole, so that the positive electrode and the negative electrode are on a same plane by means of the bonded metal layer. Finally, on a substrate, bond the first metal layer and the second metal layer onto the corresponding first bonded metal unit and the second bonded metal unit of the bonded metal layer, to form into shape, thus realizing a bond type flip-chip light-emitting structure.Type: ApplicationFiled: February 25, 2013Publication date: September 12, 2013Applicant: CHANG GUNG UNIVERSITYInventors: Liann-Be CHANG, Chen XU, Kun XU, Yunyun ZHANG, How-Wen CHIEN
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Publication number: 20130233373Abstract: A concentrated photovoltaic (CPV) cell module, comprising: a shell; a Fresnel lens set, provided on top of said shell; a first solar cell, provided on bottom of said shell and opposite to said Fresnel lens set; and at least a second solar cell, provided on surrounding wall and/or bottom of said shell, so that area originally not capable of generating power is able to generate power, to raise power generating capacity per unit area of said concentrated photovoltaic (CPV) cell module.Type: ApplicationFiled: February 27, 2013Publication date: September 12, 2013Applicant: CHANG GUNG UNIVERSITYInventors: Liann-Be Chang, Hsin-Chien Chen, Chun-Yi Tung, Fu-Ciang Yang
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Publication number: 20120313119Abstract: A three dimensional (3-D) light-emitting-diode (LED) stack and method of manufacturing the same, comprising: a substrate; at least a first LED, stacked on said substrate; and at least a second LED, stacked on said first LED, such that energy gap of said first LED is smaller than energy gap of said second LED. In said stack mentioned above, a material of larger energy gap capable of emitting light of shorter wavelength can be penetrated by lights emitted by another material of smaller energy gap capable emitting lights of longer wavelength, such that lights are mixed together and then emitted, and said materials are put into a three dimensional stack arrangement, to form a brand new light emitting device of mixed light, so as to emit lights as required.Type: ApplicationFiled: June 6, 2012Publication date: December 13, 2012Applicant: CHANG GUNG UNIVERSITYInventors: LIANN-BE CHANG, JUN-YUI CHEN
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Patent number: 8331073Abstract: An electromagnetic pulse protection circuit having wave filtering functions, composed of an inductor free slow response protection circuit and a fast response protection circuit, and a filter is series-connected on a signal transmission route, and is utilized to provide impedance in effectively preventing electromagnetic pulses caused by lightning (LS) or other electronic weapon (NEMP, HEMP, PEMP) interferences. In addition, it is capable of suppressing electromagnetic pulses at specific frequencies, thus, raising the capability of electronic elements in resisting against electromagnetic pulses. Furthermore, said filter is made of high-temperature-super-conduction (HTSC) material, so that when said HTSC material of said filter is subject to a sudden infusion or invasion of said electromagnetic pulses, it is switched to a high impedance state in a very short period of time in effectively restricting currents passing through said filter, hereby avoiding the damages of a communication system.Type: GrantFiled: March 20, 2009Date of Patent: December 11, 2012Assignee: Chang Gung UniversityInventor: Liann-Be Chang
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Publication number: 20120286064Abstract: A connection-pipe sediment prevention device and method. In said connection-pipe sediment prevention device, at least a pressuring element is disposed at an opening of a pipe body of said connection-pipe, and a controller controls reciprocal movements of said pressuring elements, to make suspension liquid to flow in said connection-pipe and not to produce sediment. A nozzle is provided at bottom of said connection-pipe, to spray out said suspension liquid. Said connection-pipe sediment prevention method utilizes same means to make powder distribute evenly in said suspension liquid, so that said suspension liquid is sprayed out evenly from said nozzle. A connection-pipe principle is used, such that said suspension liquid having insoluble powder will not produce sediment, in achieving uniform spray. In addition, it is not required to put in large amount of powder and liquid at one time, thus saving production cost.Type: ApplicationFiled: June 28, 2012Publication date: November 15, 2012Applicant: CHANG GUNG UNIVERSITYInventors: LIANN-BE CHANG, CHIA-YI YEN, YUAN-HSIAO CHANG