Patents by Inventor Young-man Ahn

Young-man Ahn 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: 20150340074
    Abstract: A memory module having an address minoring function is provided. The memory module includes a register that allows mode registers of first memory chips of a first rank and mode registers of second memory chips of a second rank to be identically programmed in response to a mode register set (MRS) command during a rank-merged test mode. The register sets address signals, which are symmetrically connected to the first and second memory chips through through-via-holes (TVHs) or blind-via-holes (BVHs) of a printed circuit board, to be selectively mirrored.
    Type: Application
    Filed: April 8, 2015
    Publication date: November 26, 2015
    Inventors: JUN-HEE SHIN, SANG-JHUN HWANG, YOUNG-MAN AHN
  • Publication number: 20150331284
    Abstract: A display module includes a display panel; a backlight unit which is disposed behind the display panel; a bottom chassis to accommodate the backlight unit; and a reflective sheet which is disposed inside the bottom chassis and configured to reflect a light portion incident thereon toward the display panel. The backlight unit includes LEDs disposed apart from one another in 2D array, and the reflective sheet includes a sheet bottom portion corresponding to a front surface of the bottom chassis, a sheet inclined portion which is obliquely formed to face a rear surface of the display panel, and light adjustment portions which are provided on the sheet inclined portion and configured to adjust the light portion reflected by the sheet inclined portion. Each of the light adjustment portions corresponds to one of the LEDs disposed adjacent to the sheet inclined portion.
    Type: Application
    Filed: July 27, 2015
    Publication date: November 19, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung Jin CHO, Young Man AHN, Dae Hee LEE, Nae Won JANG, Hyeong Sik CHOI
  • Patent number: 9164139
    Abstract: A memory device includes a memory cell array and a data input/output circuit. The memory cell array includes a plurality of memory cells connected to a plurality of bit lines and a plurality of word lines. The data input/output circuit is configured to receive data from external data pins of the memory device, output the received data to the memory cell array through a plurality of input/output lines electrically coupled to the plurality of bit lines, receive data read from the memory cell array through the plurality of input/output lines, and output the read data through the external data pins. For each external data pin, the data input/output circuit is configured to output data received at the external data pin to a corresponding input/output line. The corresponding input/output line is selected in response to bit values of a set of bits included in the received data.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: October 20, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun Hee Shin, Young Man Ahn, Seung Mo Jung, You Keun Han, Sang Jhun Hwang
  • Patent number: 9122100
    Abstract: A display module includes a display panel; a backlight unit which is disposed behind the display panel and configured to emit light toward the display panel; a bottom chassis configured to accommodate the backlight unit; and a reflective sheet which is disposed inside the bottom chassis and configured to reflect a light portion incident thereon toward the display panel. The reflective sheet includes a sheet bottom portion corresponding to a front surface of the bottom chassis, a sheet inclined portion which is obliquely formed to face a rear surface of the display panel, and a light adjustment portion which is provided on the sheet inclined portion and configured to adjust the light portion reflected by the sheet inclined portion.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: September 1, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung Jin Cho, Young Man Ahn, Dae Hee Lee, Nae Won Jang, Hyeong Sik Choi
  • Publication number: 20150062999
    Abstract: A memory module is provided. A plurality of DRAMs is mounted on a PCB. At least one DRAM has an operating parameter different from other DRAMs according to a position where the at least one DRAM is mounted on the PCB.
    Type: Application
    Filed: July 1, 2014
    Publication date: March 5, 2015
    Inventors: DAN-KYU KANG, Sang-Seok Kang, Young-Man Ahn
  • Publication number: 20150002778
    Abstract: Disclosed is a display device which includes a liquid crystal display configured to display an image, a plurality of backlights which are disposed in a rear area of the liquid crystal display and comprise a plurality of point light sources, a bottom chassis on which the backlights are disposed, and a plurality of reflective devices which are mounted on the bottom chassis and reflect light, which is emitted from a plurality of light sources disposed at corners of the bottom chassis and diffused in a sideward direction, toward the corners of the bottom chassis so as to secure a sufficient amount of light at the corners of the bottom chassis.
    Type: Application
    Filed: June 10, 2014
    Publication date: January 1, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nae Won JANG, Young Man AHN, Dae Hee LEE, Byoung Jin CHO, Hyeong Sik CHOI
  • Publication number: 20140347840
    Abstract: A display device includes a display panel, a backlight unit configured to output light to the display panel, and a lens part interposed between the display panel and the backlight unit, and configured to transmit the light output from the backlight unit is transmitted, wherein the backlight unit includes an optical module configured to output the light, and a light guide plate configured to form a light path through which the light that is output from the optical module and incident on the light guide plate is transmitted and to scatter the incident light, the light guide plate including a fixing hole, a first pattern part configured to scatter the incident light output from the optical module, and a second pattern part provided adjacent to the fixing hole.
    Type: Application
    Filed: May 22, 2014
    Publication date: November 27, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kil Hong LEE, Dae Hee LEE, Sin Wook HYUNG, Young Man AHN, Hyeong Sik CHOI
  • Publication number: 20140333873
    Abstract: A display device including a display panel configured to display, a backlight unit configured to emit light toward the display panel, a pattern layer having a pattern formed to compensate for short-wavelength light among light emitted the backlight unit, and a diffusion plate configured to diffuse the compensated short-wavelength light and the light emitted from the backlight unit, so that the non-uniform color generated due to the color breakup is improved by use of blue ink having a bead shape that is disposed on the diffusion plate.
    Type: Application
    Filed: May 9, 2014
    Publication date: November 13, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sin Wook HYUNG, Young Man AHN, Kil Hong LEE, Dae Hee LEE, Hyeong Sik CHOI
  • Publication number: 20140286000
    Abstract: A backlight unit and a display device having the same includes a light source installed at a position, separated from the central region of a light diffuser diffusing light by a predetermined distance, to radiate light to the light diffuser, and a lens unit installed between the light diffuser and the light source and having a surface facing the light source, the surface of the lens unit facing the light source including reflective areas which are coated with a reflective material and reflect a part of light radiated from the light source, and a transmissive area transmitting the other part of light radiated from the light source. The display device may eliminate generation of a dark region on a display panel due to the shadow of the backlight unit through improvement of the structure of the lens unit.
    Type: Application
    Filed: March 20, 2014
    Publication date: September 25, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Byoung Jin Cho, Young Chol Lee, Young Man Ahn, Joon Seok Ahn, Nae Won Jang, Hyeong Sik Choi
  • Publication number: 20140211121
    Abstract: A display module includes a display panel; a backlight unit which is disposed behind the display panel and configured to emit light toward the display panel; a bottom chassis configured to accommodate the backlight unit; and a reflective sheet which is disposed inside the bottom chassis and configured to reflect a light portion incident thereon toward the display panel. The reflective sheet includes a sheet bottom portion corresponding to a front surface of the bottom chassis, a sheet inclined portion which is obliquely formed to face a rear surface of the display panel, and a light adjustment portion which is provided on the sheet inclined portion and configured to adjust the light portion reflected by the sheet inclined portion.
    Type: Application
    Filed: January 29, 2014
    Publication date: July 31, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Byoung Jin CHO, Young Man AHN, Dae Hee LEE, Nae Won JANG, Hyeong Sik CHOI
  • Publication number: 20140211123
    Abstract: A display module includes a display panel, a diffusion plate, a bottom chassis, and a transparent spacer made having a diffusion pattern formed thereon disposed on the bottom chassis to support the diffusion plate.
    Type: Application
    Filed: January 31, 2014
    Publication date: July 31, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Hee LEE, Young Man AHN, Nae Won JANG, Byoung Jin CHO, Hyeong Sik CHOI
  • Publication number: 20140043920
    Abstract: A memory device includes a memory cell array and a data input/output circuit. The memory cell array includes a plurality of memory cells connected to a plurality of bit lines and a plurality of word lines. The data input/output circuit is configured to receive data from external data pins of the memory device, output the received data to the memory cell array through a plurality of input/output lines electrically coupled to the plurality of bit lines, receive data read from the memory cell array through the plurality of input/output lines, and output the read data through the external data pins. For each external data pin, the data input/output circuit is configured to output data received at the external data pin to a corresponding input/output line. The corresponding input/output line is selected in response to bit values of a set of bits included in the received data.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 13, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jun Hee SHIN, Young Man AHN, Seung Mo JUNG, You Keun HAN, Sang Jhun HWANG
  • Patent number: 8184520
    Abstract: An optical pickup device includes a light source to emit light, an objective lens to focus the light on a recording medium to form a light spot, an optical path changer on an optical path between the light source and the objective lens to change the path of incident light, a chromatic aberration correction lens disposed on an optical path between the light source and the objective lens, and a photodetector to receive light which is reflected from the recording medium and is then incident thereon through the optical path changer. The chromatic aberration correction lens corrects a chromatic aberration occurring due to a change in the wavelength and/or due to an increase in a wavelength bandwidth of the light. The chromatic aberration correction lens includes at least two lenses such that a lens having a positive power and a lens having a negative power are adjacent to each other.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: May 22, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae-kyung Kim, Young-man Ahn, Chong-sam Chung, Hea-jung Suh
  • Publication number: 20110205880
    Abstract: An optical beam forming apparatus capable of forming a polarization of laser beam into an elliptic polarization includes a beam source to emit a semiconductor laser beam, a wave plate to receive the beam emitted from the beam source and to form an elliptic polarization, and a lens to focus the beam passed through the wave plate to form a beam spot on a disc.
    Type: Application
    Filed: February 24, 2011
    Publication date: August 25, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Bong-gi KIM, Young-man Ahn, Ichiro Morishita
  • Patent number: 7990833
    Abstract: An optical pickup device, which reduces the size of an optical spot formed on an optical disk, and prevents the degradation of a tracking error signal due to coherent light from a layer adjacent a target recording/reproducing layer of the optical disk. The optical pickup device includes a light source emitting light at a designated wavelength; an object lens concentrating the light incident from the light source thereupon and forming an optical spot on an optical disk having multiple recording layers; and an optical detector receiving the light reflected by the optical disk and detecting a data signal and an error signal, wherein at least one diffraction pattern region partially diffracting or intercepting the light, emitted from the light source and being incident upon the object lens, and the light, reflected by optical disk and being incident upon the object lens, is formed on the object lens.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: August 2, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae Youn Heor, Soo Han Park, Young Man Ahn
  • Patent number: 7930465
    Abstract: A semiconductor memory device capable of determining an operation mode by using states of data pins, and an operation mode determining method for the same are disclosed. The semiconductor memory device includes at least one MRS input pad, at least one data input pad, and an operation mode determining circuit. The operation mode determining circuit generates an operation mode determining signal, when an MRS command input through the MRS input pad corresponds to a predetermined MRS command and data signals input through the data input pad or pads include a predetermined combination. Accordingly, the efficiency in the manufacturing and producing processes may be improved by determining the operation mode of the semiconductor memory device in a module assembly process.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: April 19, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seok-Il Kim, Young-Man Ahn, Byung-Se So, Seung-Jin Seo
  • Publication number: 20100254026
    Abstract: An object lens for an optical disk may include an aspherical lens surface, and an aspherical equation, which may be applied to form the aspherical lens surface may include two 2nd order function terms. Accordingly, a lens, which has a high numerical aperture (NA) and also has a small flexure on a lens surface or aberration, is provided.
    Type: Application
    Filed: December 24, 2009
    Publication date: October 7, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Seong-su PARK, Ichiro Morishita, Soo-han Park, Young-man Ahn, Byeong-hyeon Yu, Jong-il Kim, Jung-woo Hong, Su-hyun Kim
  • Patent number: 7764475
    Abstract: A multi-mode electrostatic discharge (ESD) circuit for a semiconductor chip comprises first and second ESD diodes. In a first mode, a body voltage greater than a power source voltage of the semiconductor chip is applied to the first ESD diode and a body voltage less than a ground voltage of the semiconductor chip is applied to the second ESD diode. In a second mode, a body voltage substantially equal to the power source voltage of the semiconductor chip is applied to the body of the first ESD diode and a body voltage substantially equal to the ground voltage of the semiconductor chip is applied to the second ESD diode.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: July 27, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myung-Hee Sung, Young-Man Ahn
  • Patent number: 7668049
    Abstract: An optical pickup actuator is provided. The actuator comprises a bobbin, on which one or more objective lenses are mounted for allowing light to be incident onto an optical information storage medium, and which is supported by a support member to be movable in relation to a base. The actuator also comprises a magnetic circuit for independently driving the bobbin in focusing and tilt directions.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: February 23, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seok-jung Kim, Jung-gug Pae, Hyung-hoon Kang, Young-man Ahn, Tae-youn Heor
  • Patent number: 7652949
    Abstract: A memory module includes a first memory group including a plurality of memory devices, a second memory group including a less number of memory devices with respect to the memory devices in the first memory group, a register configured to provide a command/address signal to the first memory group and a delayed command/address signal to the second memory group, a first signal line configured to transfer the command/address signal to the first memory group, and a second signal line configured to transfer the delayed command/address signal to the second memory group.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: January 26, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chil-Nam Yoon, Young-Man Ahn, Young-Jun Park, Sung-Joo Park