Patents by Inventor Jae Sik Sim
Jae Sik Sim 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).
-
Publication number: 20150079722Abstract: Disclosed are an avalanche photodiode with a guard ring structure that relieves edge breakdown by an external voltage which is applied through a metal pad which is attached to the guard ring and a manufacturing method thereof. An avalanche photodiode with a guard ring structure includes a plurality of semiconductor layers laminated on a substrate; an active region partially formed above the semiconductor layers; a guard ring which is formed above the semiconductor layers and disposed so as to be spaced apart from the active region and have a ring shape that encloses the active region; and a connecting unit formed on the semiconductor layers to be electrically connected to the guard ring so as to apply an external voltage to the guard ring region. Therefore, the external voltage is applied to the guard ring of the avalanche diode through the connecting unit to relieve the edge breakdown.Type: ApplicationFiled: November 25, 2014Publication date: March 19, 2015Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Bongki MHEEN, Myoungsook OH, Kisoo KIM, Jae-Sik SIM, Yong-Hwan KWON, Eun Soo NAM
-
Publication number: 20150009485Abstract: Provided is a laser radar system. The laser radar system includes a first transmission and reception unit sequentially radiating a first laser beam to a plurality of locations within a first view range and receiving a reflected light; and a second transmission and reception unit sequentially radiating a second laser beam to a plurality of locations within a second view range and receiving a reflected light, wherein each of the first transmission and reception unit and the second transmission and reception unit is fixed to a loader and independently searches for the first view range and the second view range.Type: ApplicationFiled: July 1, 2014Publication date: January 8, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Bongki MHEEN, Myoungsook OH, Jae-Sik SIM, Jung-Ho SONG, Hong-Seok SEO, Minhyup SONG
-
Publication number: 20140240691Abstract: Disclosed are a laser radar system and a method for acquiring an image of a target, and the laser radar system includes: a beam source to emit the laser beam; a beam deflector disposed between the beam source and the target, and configured to deflect the laser beam emitted from the beam source in a scanning direction of the target as time elapses; and an optical detector configured to detect the laser beam reflected from the target, which is provided a plurality of beam spots having a diameter DRBS; and a receiving optical system disposed between the target and the optical detector and configured to converge the laser beam reflected from the target, and the optical detector includes a detecting area having a diameter DDA that satisfies an equation of ?{square root over (/2)}×PRBS+2×DRBS?DDA?2×Dlens and an equation of (4/?)×?×F_number<DRBS<Dlens.Type: ApplicationFiled: June 12, 2013Publication date: August 28, 2014Inventors: Bongki MHEEN, MyoungSook Oh, Kisoo Kim, Jae-Sik Sim, Yong-Hwan Kwon, Eun Soo Nam
-
Publication number: 20140175511Abstract: An avalanche photodiode according to the inventive concept includes a substrate, light absorption layers on the substrate, clad layers on the light absorption layers, and active regions in the clad layers. The light absorption layers, the clad layers, and the active regions constitute unit cells. Each of the unit cells has a fan-shape.Type: ApplicationFiled: July 25, 2013Publication date: June 26, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Jae-Sik SIM, Bongki Mheen, Kisoo Kim, Myoungsook Oh
-
Patent number: 8742316Abstract: Provided is a photo detector. The photo detector includes: an avalanche photodiode; a bias circuit supplying a bias voltage to one end of the avalanche photodiode; a detection circuit connected to the other end of the avalanche photodiode and detecting a photoelectric current occurring in the avalanche photodiode; and a coupling capacitor connected to the one end or the other end of the avalanche photodiode and supplying a coupling voltage to drive the avalanche photodiode in a Geiger mode.Type: GrantFiled: November 9, 2010Date of Patent: June 3, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Kisoo Kim, Eun Soo Nam, Jae-Sik Sim, Yong-Hwan Kwon, Bongki Mheen, Myungsook Oh
-
Patent number: 8710547Abstract: The inventive concept provides avalanche photo diodes and methods of manufacturing the same. The avalanche photo diode may include a substrate, a light absorption layer formed on the substrate, a clad layer formed on the light absorption layer, an active region formed in the clad layer, a guard ring region formed around the active region, and an insulating region formed between the guard ring region and the active region.Type: GrantFiled: September 6, 2012Date of Patent: April 29, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Jae-Sik Sim, Kisoo Kim, Bongki Mheen, MyoungSook Oh, Yong-Hwan Kwon, Eun Soo Nam
-
Publication number: 20140042581Abstract: Disclosed are an avalanche photodiode with a guard ring structure that relieves edge breakdown by an external voltage which is applied through a metal pad which is attached to the guard ring and a manufacturing method thereof. An avalanche photodiode with a guard ring structure includes a plurality of semiconductor layers laminated on a substrate; an active region partially formed above the semiconductor layers; a guard ring which is formed above the semiconductor layers and disposed so as to be spaced apart from the active region and have a ring shape that encloses the active region; and a connecting unit formed on the semiconductor layers to be electrically connected to the guard ring so as to apply an external voltage to the guard ring region. Therefore, the external voltage is applied to the guard ring of the avalanche diode through the connecting unit to relieve the edge breakdown.Type: ApplicationFiled: November 29, 2012Publication date: February 13, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Bongki MHEEN, MyoungSook Oh, Kisoo Kim, Jae-Sik Sim, Yong-Hwan Kwon, Eun Soo Nam
-
Publication number: 20130341486Abstract: The present disclosure relates to an apparatus for obtaining 3D information using a photodetector array. The apparatus for obtaining 3D information includes: a light source unit configured to generate an optical signal of a predetermined wavelength band; a light transmission optical lens unit provided on a path of the optical signal and configured to emit the optical signal output from the light source unit in parallel or at a predetermined angle; an optical scanning unit configured to scan the light output from the light transmission optical lens unit to a surface of an object to be measured; a light reception optical lens unit configured to collect the light reflected from the surface of the object; and a photodetection unit configured to convert collected optical signals into respective electrical signals by arraying one or more photodetectors such that light reception portions thereof are collected at a center.Type: ApplicationFiled: January 31, 2013Publication date: December 26, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: MyoungSook OH, Bongki MHEEN, Jae-Sik SIM, Kisoo KIM, Yun Jeong LEE, Yong-Hwan KWON, Eun Soo NAM
-
Publication number: 20130327926Abstract: Provided is an FPA module capable of further improving a quality of an obtained 3-dimensional image by adjusting an interval of an arrangement of optical detectors and a size of the optical detector within an FPA module for obtaining the 3-dimensional image. An FPA module for obtaining a 3-dimensional image according to an exemplary embodiment of the present disclosure includes a plurality of light detectors configured to detect light reflected from a monitoring target, in which the plurality of light detectors is disposed at different intervals according to positions.Type: ApplicationFiled: June 11, 2013Publication date: December 12, 2013Inventors: Yong Hwan Kwon, Bongki Mheen, Myoung Sook Oh, Jae Sik Sim, Ki Soo Kim, Eun Soo Nam
-
Patent number: 8592247Abstract: A method includes: forming an epitaxy wafer by growing a light absorbing layer, a grading layer, an electric field buffer layer, and an amplifying layer on the front surface of a substrate in sequence; forming a diffusion control layer on the amplifying layer; forming a protective layer for protecting the diffusion control layer on the diffusion control layer; forming an etching part by etching from the protective layer to a predetermined depth of the amplifying layer; forming a first patterning part by patterning the protective layer; forming a junction region and a guardring region at the amplifying layer by diffusing a diffusion material to the etching part and the first patterning part; removing the diffusion control layer and the protective layer and forming a first electrode connected to the junction region on the amplifying layer; and forming a second electrode on the rear surface of the substrate.Type: GrantFiled: October 14, 2011Date of Patent: November 26, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Jae Sik Sim, Ki Soo Kim, Bong Ki Mheen, Myoung Sook Oh, Yong Hwan Kwon, Eun Soo Nam
-
Publication number: 20130153962Abstract: The inventive concept provides avalanche photo diodes and methods of manufacturing the same. The avalanche photo diode may include a substrate, a light absorption layer formed on the substrate, a clad layer formed on the light absorption layer, an active region formed in the clad layer, a guard ring region formed around the active region, and an insulating region formed between the guard ring region and the active region.Type: ApplicationFiled: September 6, 2012Publication date: June 20, 2013Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jae-Sik SIM, Kisoo Kim, Bongki Mheen, MyoungSook Oh, Yong-Hwan Kwon, Eun Soo Nam
-
Patent number: 8338868Abstract: An image sensor with a shared photodiode is provided. The image sensor includes at least two unit pixels, each of which includes a photodiode, a diffusion region which gathers electrons from the photodiode, a transfer transistor which connects the photodiode with the diffusion region, and a readout circuit which reads out a signal from the diffusion region. Photodiodes of neighboring unit pixels are disposed symmetrically to be adjacent to one another to form a shared photodiode. The image sensor does not have a STI region which causes a dark current restricting its performance and does not require a basic minimum design factor (a distance or an area) related to a STI region. A region corresponding to a STI region may be used as a region of a photodiode or for additional pixel scaling. Therefore, a limitation in scaling of a photodiode is overcome, and pixel performance is improved in spite of pixel scaling.Type: GrantFiled: November 25, 2009Date of Patent: December 25, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Bong Ki Mheen, Albert J. P. Theuwissen, Jae Sik Sim, Mi Ran Park, Yong Hwan Kwon, Eun Soo Nam
-
Patent number: 8335200Abstract: Provided are a method and device for separating and converting multiband signals. The device includes a photoelectric converter for converting an externally received optical signal into an electrical signal, a first switch for separating the converted electrical signal into signals according to frequency bands, a first mobile communication band-pass amplifier for amplifying a mobile communication network signal of the signals separated by the first switch, a broadband up-converter for up-converting a baseband signal of the signals separated by the first switch into a broadband signal, a first broadband amplifier for amplifying the broadband signal output from the broadband up-converter, and a transmitter for wirelessly transmitting the signals amplified by the first mobile communication band-pass amplifier and the first broadband amplifier.Type: GrantFiled: May 23, 2008Date of Patent: December 18, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Yong Duck Chung, Kwang Seong Choi, Jae Sik Sim, Yong Hwan Kwon, Sung Bok Kim, Je Ha Kim
-
Publication number: 20120162373Abstract: Disclosed is a system of a dynamic range three-dimensional image, including: an optical detector including a gain control terminal capable of controlling an optical amplification gain; a pixel detecting module for detecting a pixel signal for configuring an image by receiving an output of the optical detector; a high dynamic range (HDR) generating module for acquiring a dynamic range image by generating a signal indicating a saturation degree of the pixel signal and combining the pixel signal based on the pixel signal detected by the pixel detecting module; and a gain control signal generating module generating an output signal for supplying required voltage to the gain control terminal of the optical detector based on the magnitude of the signal indicating the saturation degree of the pixel signal.Type: ApplicationFiled: December 22, 2011Publication date: June 28, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Bongki MHEEN, Ki-Jun Sung, Jae-Sik Sim, Kisoo Kim, MyoungSook Oh, Yong-Hwan Kwon, Eun Soo Nam
-
Publication number: 20120156826Abstract: A method includes: forming an epitaxy wafer by growing a light absorbing layer, a grading layer, an electric field buffer layer, and an amplifying layer on the front surface of a substrate in sequence; forming a diffusion control layer on the amplifying layer; forming a protective layer for protecting the diffusion control layer on the diffusion control layer; forming an etching part by etching from the protective layer to a predetermined depth of the amplifying layer; forming a first patterning part by patterning the protective layer; forming a junction region and a guardring region at the amplifying layer by diffusing a diffusion material to the etching part and the first patterning part; removing the diffusion control layer and the protective layer and forming a first electrode connected to the junction region on the amplifying layer; and forming a second electrode on the rear surface of the substrate.Type: ApplicationFiled: October 14, 2011Publication date: June 21, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jae Sik SIM, Ki Soo KIM, Bong Ki MHEEN, Myoung Sook OH, Yong Hwan KWON, Eun Soo NAM
-
Patent number: 8183612Abstract: Provided are an optical receiver and a method of forming the same. The optical receiver includes a lens, a photo detector, and a hetero-junction bipolar transistor. The lens is attached to a backside of a substrate. The photo detector is disposed on a top surface of the substrate. The hetero-junction bipolar transistor is disposed on the top surface of the substrate. The lens condenses an incident optical signal to transmit the condensed optical signal to the photo detector.Type: GrantFiled: July 7, 2009Date of Patent: May 22, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Young-Jun Chong, Eun-Soo Nam, Jae-Sik Sim, Yong-Hwan Kwon, Bong-Ki Mheen
-
Patent number: 8030188Abstract: Provided is a method of forming a compound semiconductor device. In the method, a dopant element layer is formed on an undoped compound semiconductor layer. An annealing process is performed to diffuse dopants in the dopant element layer into the undoped compound semiconductor layer, thereby forming a dopant diffusion region. A rapid cooling process is performed using liquid nitrogen with respect to the substrate having the dopant diffusion region.Type: GrantFiled: July 23, 2009Date of Patent: October 4, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Mi-Ran Park, Jae-Sik Sim, Yong-Hwan Kwon, Bongki Mheen, Dae Kon Oh
-
Publication number: 20110140168Abstract: Provided is an avalanche photodetector with an integrated micro lens. The avalanche photodetector includes a light absorbing layer on a semiconductor substrate, an amplification layer on the light absorbing layer, a diffusion layer within the amplification layer, and the micro lens disposed corresponding to the diffusion layer. The micro lens includes a first refractive layer and a second refractive layer having a refractive index less than that of the first refractive layer.Type: ApplicationFiled: April 28, 2010Publication date: June 16, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jae-Sik SIM, Bongki Mheen, Myungsook Oh, Yong-Hwan Kwon, Eun Soo Nam
-
Publication number: 20110133059Abstract: Provided is a photo detector. The photo detector includes: an avalanche photodiode; a bias circuit supplying a bias voltage to one end of the avalanche photodiode; a detection circuit connected to the other end of the avalanche photodiode and detecting a photoelectric current occurring in the avalanche photodiode; and a coupling capacitor connected to the one end or the other end of the avalanche photodiode and supplying a coupling voltage to drive the avalanche photodiode in a Geiger mode.Type: ApplicationFiled: November 9, 2010Publication date: June 9, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kisoo KIM, Eun Soo Nam, Jae-Sik Sim, Yong-Hwan Kwon, Bongki Mheen, Myungsook Oh
-
Publication number: 20100246451Abstract: Provided are a method and device for separating and converting multiband signals. The device includes a photoelectric converter for converting an externally received optical signal into an electrical signal, a first switch for separating the converted electrical signal into signals according to frequency bands, a first mobile communication band-pass amplifier for amplifying a mobile communication network signal of the signals separated by the first switch, a broadband up-converter for up-converting a baseband signal of the signals separated by the first switch into a broadband signal, a first broadband amplifier for amplifying the broadband signal output from the broadband up-converter, and a transmitter for wirelessly transmitting the signals amplified by the first mobile communication band-pass amplifier and the first broadband amplifier.Type: ApplicationFiled: May 23, 2008Publication date: September 30, 2010Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Yong Duck Chung, Kwang Seong Choi, Jae Sik Sim, Yong Hwan Kwon, Sung Bok Kim, Je Ha Kim