Patents by Inventor Hyun-Mook PARK
Hyun-Mook PARK 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: 20240099132Abstract: The present invention relates to an organic electroluminescent device comprising at least one light-emitting layer between an anode and a cathode, wherein the light-emitting layer comprises a host and a phosphorescent dopant; the host comprises plural host compounds; at least a first host compound of the plural host compounds has a structure of a nitrogen-containing heterocyclic linker bonded to a nitrogen atom of a carbazole of an indole-carbazole, indene-carbazole, benzofuran-carbazole, or benzothiophene-carbazole residue; and a second host compound has a carbazole-aryl-carbazole or carbazole-carbazole structure. According to the present invention, by using a specific multi-component host different from the conventional organic electroluminescent device, an organic electroluminescent device of significantly improved lifespan is provided.Type: ApplicationFiled: November 15, 2023Publication date: March 21, 2024Inventors: Kyoung-Jin PARK, Bitnari KIM, Yoo-Jin DOH, Hyun-Ju KANG, Young-Mook LIM, Su-Hyun LEE, Chi-Sik KIM
-
Patent number: 11931566Abstract: The present invention relates to an implantable nerve stimulation device, which includes: a body part which is formed of a metal that ultrasonic waves can be transmitted, and includes a stimulation surface and a charging surface facing each other; a header part which is made of a non-metal and is located at one end of the body part; a cover which includes a stimulation electrode, a hinge part rotatably coupled to one side of the stimulation surface, and a coupling part detachably coupled to the other side of the stimulation surface, is positioned above the stimulation surface to interpose a nerve between the electrode and the stimulation surface; and power generation elements which are located inside the body part and are electrically connected to the electrode.Type: GrantFiled: October 11, 2023Date of Patent: March 19, 2024Assignee: ENERGY MINING Co., Ltd.Inventors: Hyun Moon Park, Young Min Cho, Jang Mook Jeong
-
Patent number: 10797682Abstract: A common signal attenuation circuit may include a sensing block suitable for sensing differential signals to generate sensed differential signals; a common signal generation block suitable for generating an common signal having a common voltage noise by combining the sensed differential signals; and an attenuation block suitable for adjusting the common voltage noise in the original common signal by combining the common signal having the adjusted common voltage noise to the differential signals.Type: GrantFiled: August 18, 2017Date of Patent: October 6, 2020Assignee: SK hynix Inc.Inventors: Gun-Hee Yun, Hyun-Mook Park
-
Patent number: 10757356Abstract: Provided are a comparison device that may minimize an influence of banding noise by offsetting the banding noise, and a CMOS image sensor including the comparison device. The comparison device may include a comparison circuit configured to compare a pixel signal and a ramp signal with each other and output a comparison signal, a banding noise adjustment circuit coupled to the comparison circuit to adjust electrical characteristic values of the comparison circuit, a banding value generation circuit coupled to the banding noise adjustment circuit to provide the banding noise adjustment circuit with a banding value generated based on a setting code value, and a banding noise reduction circuit coupled to the banding noise adjustment circuit and configured to reduce the banding noise of the comparison circuit by adjusting electrical characteristic values of the comparison circuit.Type: GrantFiled: December 13, 2018Date of Patent: August 25, 2020Assignee: SK hynix Inc.Inventors: Hyeon-June Kim, Tae-Hoon Kim, Hyun-Mook Park
-
Publication number: 20190335128Abstract: Provided are a comparison device that may minimize an influence of banding noise by offsetting the banding noise, and a CMOS image sensor including the comparison device. The comparison device may include a comparison circuit configured to compare a pixel signal and a ramp signal with each other and output a comparison signal, a banding noise adjustment circuit coupled to the comparison circuit to adjust electrical characteristic values of the comparison circuit, a banding value generation circuit coupled to the banding noise adjustment circuit to provide the banding noise adjustment circuit with a banding value generated based on a setting code value, and a banding noise reduction circuit coupled to the banding noise adjustment circuit and configured to reduce the banding noise of the comparison circuit by adjusting electrical characteristic values of the comparison circuit.Type: ApplicationFiled: December 13, 2018Publication date: October 31, 2019Inventors: Hyeon-June Kim, Tae-Hoon Kim, Hyun-Mook Park
-
Patent number: 10257451Abstract: Provided are a comparison device capable of achieving a small area by using one small sampling capacitor for an input terminal and improving linearity by using a fixed reference voltage and a CMOS image sensor using the same. The comparison device may include a comparator configured to compare a pixel signal inputted through a positive input terminal with a ramp signal, a first sampling capacitor configured to be provided between an input terminal of the ramp signal and the positive input terminal of the comparator, a sampling switch configured to be provided between an output terminal of the comparator and a negative input terminal of the comparator, and a second sampling capacitor configured to be provided between a ground terminal and the negative input terminal of the comparator.Type: GrantFiled: October 14, 2016Date of Patent: April 9, 2019Assignee: SK hynix Inc.Inventors: Gun-Hee Yun, Hyun-Mook Park
-
Patent number: 10057527Abstract: An analog-digital converter may include a comparator suitable for comparing an input signal to a ramp signal to repetitively output a comparison signal a number of times corresponding to an analog gain for an analog-digital conversion; a counter receiving the repetitively outputted comparison signal from the comparator, the counter being suitable for performing a counting operation based on the repetitively outputted comparison signal; and a counting limiter suitable for limiting the counted number of bits by a maximum counted bit number of the counter.Type: GrantFiled: August 30, 2016Date of Patent: August 21, 2018Assignee: SK Hynix Inc.Inventors: Gun-Hee Yun, Hyun-Mook Park
-
Patent number: 10051215Abstract: A pixel biasing device includes a ramp ground noise unit, a bias current generation unit, and a pixel biasing unit; the ramp ground noise unit being suitable for generating a ramp ground noise and for transferring the ramp ground noise to the bias current generation unit; the bias current generation unit being suitable for generating a bias current by combining an inputted reference current with the ramp ground noise received from the ramp ground noise unit; and the pixel biasing unit being suitable for performing a biasing operation on an inputted pixel signal based on the bias current.Type: GrantFiled: August 30, 2016Date of Patent: August 14, 2018Assignee: SK Hynix Inc.Inventors: Gun-Hee Yun, Hyun-Mook Park
-
Publication number: 20180183408Abstract: A common signal attenuation circuit may include a sensing block suitable for sensing differential signals to generate sensed differential signals; a common signal generation block suitable for generating an common signal having a common voltage noise by combining the sensed differential signals; and an attenuation block suitable for adjusting the common voltage noise in the original common signal by combining the common signal having the adjusted common voltage noise to the differential signals.Type: ApplicationFiled: August 18, 2017Publication date: June 28, 2018Inventors: Gun-Hee YUN, Hyun-Mook PARK
-
Patent number: 9948316Abstract: An analog-to-digital converter includes a ramp signal generation unit suitable for decreasing a voltage range of a ramp signal in reverse proportion to a multiple of a gain and repeatedly generating the ramp signal by the multiple of the gain; a comparator suitable for repeatedly outputting a comparison signal by the multiple of the gain in response to the ramp signal; and a counter suitable for performing a counting operation in response to the comparison signal.Type: GrantFiled: August 17, 2017Date of Patent: April 17, 2018Assignee: SK Hynix Inc.Inventors: Gun-Hee Yun, Hyun-Mook Park
-
Publication number: 20170280077Abstract: Provided are a comparison device capable of achieving a small area by using one small sampling capacitor for an input terminal and improving linearity by using a fixed reference voltage and a CMOS image sensor using the same. The comparison device may include a comparator configured to compare a pixel signal inputted through a positive input terminal with a ramp signal, a first sampling capacitor configured to be provided between an input terminal of the ramp signal and the positive input terminal of the comparator, a sampling switch configured to be provided between an output terminal of the comparator and a negative input terminal of the comparator, and a second sampling capacitor configured to be provided between a ground terminal and the negative input terminal of the comparator.Type: ApplicationFiled: October 14, 2016Publication date: September 28, 2017Inventors: Gun-Hee YUN, Hyun-Mook PARK
-
Publication number: 20170223295Abstract: An analog-digital converter may include a comparator suitable for comparing an input signal to a ramp signal to repetitively output a comparison signal a number of times corresponding to an analog gain for an analog-digital conversion; a counter receiving the repetitively outputted comparison signal from the comparator, the counter being suitable for performing a counting operation based on the repetitively outputted comparison signal; and a counting limiter suitable for limiting the counted number of bits by a maximum counted bit number of the counter.Type: ApplicationFiled: August 30, 2016Publication date: August 3, 2017Inventors: Gun-Hee YUN, Hyun-Mook PARK
-
Publication number: 20170214868Abstract: A pixel biasing device includes a ramp ground noise unit, a bias current generation unit, and a pixel biasing unit; the ramp ground noise unit being suitable for generating a ramp ground noise and for transferring the ramp ground noise to the bias current generation unit; the bias current generation unit being suitable for generating a bias current by combining an inputted reference current with the ramp ground noise received from the ramp ground noise unit; and the pixel biasing unit being suitable for performing a biasing operation on an inputted pixel signal based on the bias current.Type: ApplicationFiled: August 30, 2016Publication date: July 27, 2017Inventors: Gun-Hee YUN, Hyun-Mook PARK
-
Patent number: 9543938Abstract: A comparator may include: a first comparison unit suitable for generating a comparison voltage by performing a comparison operation between a pixel signal and a ramp signal; a time point detection unit suitable for detecting specific timing points of the comparison operation in response to the comparison voltage and a reference voltage, and generating a detection signal corresponding to the specific timing points; a period determination unit suitable for determining an additional supply period in response to the detection signal and a period determination control signal; and an additional current supply unit suitable for supplying an additional current to the first comparison unit during the additional supply period.Type: GrantFiled: June 24, 2015Date of Patent: January 10, 2017Assignee: SK Hynix Inc.Inventors: Hyun-Mook Park, Gun-Hee Yun
-
Publication number: 20160295143Abstract: A pixel amplification apparatus includes a single common current source suitable for supplying an identical current to columns, a plurality of column selection units each suitable for selecting each column to allow a corresponding current to flow, a plurality of pixel bias sampling units each suitable for sampling the corresponding current flowing through each of the column selection units as a pixel bias, and a plurality of amplification units each suitable for amplifying to a pixel signal based on the sampled pixel bias.Type: ApplicationFiled: August 20, 2015Publication date: October 6, 2016Inventors: Hyun-Mook PARK, Gun-Hee YUN
-
Publication number: 20160277010Abstract: A comparator may include: a first comparison unit suitable for generating a comparison voltage by performing a comparison operation between a pixel signal and a ramp signal; a time point detection unit suitable for detecting specific timing points of the comparison operation in response to the comparison voltage and a reference voltage, and generating a detection signal corresponding to the specific timing points; a period determination unit suitable for determining an additional supply period in response to the detection signal and a period determination control signal; and an additional current supply unit suitable for supplying an additional current to the first comparison unit during the additional supply period.Type: ApplicationFiled: June 24, 2015Publication date: September 22, 2016Inventors: Hyun-Mook PARK, Gun-Hee YUN