Patents by Inventor Yong-dok Cha
Yong-dok Cha 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: 10775655Abstract: A display apparatus includes a bottom chassis, a display panel provided in front of the bottom chassis, and a cover film configured to cover the display panel and being fixable to the bottom chassis. With this configuration, a bezel may be minimized (e.g., reduced in size) or eliminated, and the display efficiency may be improved.Type: GrantFiled: June 28, 2017Date of Patent: September 15, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Jun-Mo Yoo, Seung Hun Chae, Han Mi Choi, Young Chol Lee, Nae-Won Jang, Jong Pil Jeon, Yong Dok Cha, Jean Hur
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Patent number: 10401679Abstract: The display apparatus reflects the light emitted from the light source to a display panel using a reflective member without a member such as a light guide plate. The reflective member is configured so that the light emitted from the light source can be provided uniformly and introduced uniformly to the display panel. Even if a board with the light source disposed at a side of the reflective member, the light emitted from the light source can be radiated substantially uniformly to the entire area of the display panel by the reflective surface of the reflective member.Type: GrantFiled: March 9, 2017Date of Patent: September 3, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Yong Dok Cha, Jong Bin Kim, Jeong Shan Na, Young Chol Lee, Jae Hak Cho, Jean Hur
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Patent number: 10317732Abstract: A display apparatus includes a plurality of light sources that are arranged in several rows at different intervals so that light emitted from the plurality of light sources may reach all regions of a display panel uniformly. Accordingly, a uniform dispersion of the light incident on the display panel may be achieved. Furthermore, distribution of light generated from the plurality of light sources on the display panel may be facilitated through a reflecting unit without the use of a light-guide plate or the like.Type: GrantFiled: November 3, 2016Date of Patent: June 11, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dae Young Kim, Jong Bin Kim, Hyung Ki Kim, Young Min Lee, Young-Wook Jung, Jae Hak Cho, Yong Dok Cha
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Publication number: 20180004033Abstract: A display apparatus includes a bottom chassis, a display panel provided in front of the bottom chassis, and a cover film configured to cover the display panel and being fixable to the bottom chassis. With this configuration, a bezel may be minimized (e.g., reduced in size) or eliminated, and the display efficiency may be improved.Type: ApplicationFiled: June 28, 2017Publication date: January 4, 2018Inventors: Jun-Mo YOO, Seung Hun CHAE, Han Mi CHOI, Young Chol LEE, Nae-Won JANG, Jong Pil JEON, Yong Dok CHA, Jean HUR
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Publication number: 20170261813Abstract: The display apparatus reflects the light emitted from the light source to a display panel using a reflective member without a member such as a light guide plate. The reflective member is configured so that the light emitted from the light source can be provided uniformly and introduced uniformly to the display panel. Even if a board with the light source disposed at a side of the reflective member, the light emitted from the light source can be radiated substantially uniformly to the entire area of the display panel by the reflective surface of the reflective member.Type: ApplicationFiled: March 9, 2017Publication date: September 14, 2017Inventors: Yong Dok CHA, Jong Bin KIM, Jeong Shan NA, Young Chol LEE, Jae Hak CHO, Jean HUR
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Publication number: 20170184920Abstract: A display apparatus includes a plurality of light sources that are arranged in several rows at different intervals so that light emitted from the plurality of light sources may reach all regions of a display panel uniformly. Accordingly, a uniform dispersion of the light incident on the display panel may be achieved. Furthermore, distribution of light generated from the plurality of light sources on the display panel may be facilitated through a reflecting unit without the use of a light-guide plate or the like.Type: ApplicationFiled: November 3, 2016Publication date: June 29, 2017Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dae Young KIM, Jong Bin KIM, Hyung Ki KIM, Young Min LEE, Young-Wook JUNG, Jae Hak CHO, Yong Dok CHA
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Patent number: 9664990Abstract: An illumination apparatus is provided, including a light source unit which includes at least one laser diode emitting light of a single color; a diffuser plate which disperses the light emitted from the light source unit; a fly-eye lens array which transmits light dispersed by the diffuser plate; and a fluorescent unit on which light transmitted by the fly-eye lens array is incident and which emits white light.Type: GrantFiled: April 23, 2015Date of Patent: May 30, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-tae Kim, Yong-Dok Cha
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Patent number: 9645477Abstract: Provided is a polarization light emitting diode (LED) module including: a casing comprising an opening; a light source configured to emit light; a reflective polarizer configured to transmit first polarized light of the light emitted from the light source through the opening of the casing toward an external polarization converter, and configured to reflect second polarized light of the light emitted from the light source toward the light source; and a reflector configured to reflect light, which is reflected from the reflective polarizer and traveling toward the light source, toward the reflective polarizer, wherein the light source, the reflective polarizer and the reflector are provided inside the casing.Type: GrantFiled: February 18, 2015Date of Patent: May 9, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-Dok Cha, Sung-tae Kim
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Publication number: 20150309399Abstract: An illumination apparatus is provided, including a light source unit which includes at least one laser diode emitting light of a single color; a diffuser plate which disperses the light emitted from the light source unit; a fly-eye lens array which transmits light dispersed by the diffuser plate; and a fluorescent unit on which light transmitted by the fly-eye lens array is incident and which emits white light.Type: ApplicationFiled: April 23, 2015Publication date: October 29, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-tae KIM, Yong-Dok CHA
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Patent number: 9154774Abstract: A stereoscopic imaging system to prevent deterioration in brightness and optical characteristics due to deviation of an optical axis upon formation of a stereoscopic image is provided. The stereoscopic imaging system includes a stereoscopic image display device to output linearly polarized light, a phase difference plate provided at a front surface of the stereoscopic image display device and which converts the linearly polarized light output from the stereoscopic image display device into circularly polarized light, and liquid crystal shutter glasses having a phase difference plate attached to a front surface thereof and which restores the circularly polarized light having passed through the phase difference plate into the linearly polarized light. Upon formation of a stereoscopic image, the liquid crystal shutter glasses may restore light output from the stereoscopic image display device without loss.Type: GrantFiled: August 16, 2011Date of Patent: October 6, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Hyun Cho, Yong Dok Cha
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Publication number: 20150234260Abstract: Provided is a polarization light emitting diode (LED) module including: a casing comprising an opening; a light source configured to emit light; a reflective polarizer configured to transmit first polarized light of the light emitted from the light source through the opening of the casing toward an external polarization converter, and configured to reflect second polarized light of the light emitted from the light source toward the light source; and a reflector configured to reflect light, which is reflected from the reflective polarizer and traveling toward the light source, toward the reflective polarizer, wherein the light source, the reflective polarizer and the reflector are provided inside the casing.Type: ApplicationFiled: February 18, 2015Publication date: August 20, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-Dok CHA, Sung-tae KIM
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Publication number: 20150226971Abstract: A head-mount type display apparatus includes: a display configured to display an image; a light guide plate configured to transmit light which enters the light guide plate through a light incident surface formed at a first side of the light guide plate; a plurality of first split mirrors configured to be arranged in sequence along a first direction, and reflect light so that light from the display can be split in the first direction and enter the light incident surface; and a plurality of second split mirrors configured to be arranged in sequence along a second direction, split light transmitted through the light guide plate in the second direction, and reflect the split light so that the image displayed on the display can be recognized.Type: ApplicationFiled: February 12, 2015Publication date: August 13, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-tae KIM, Yong-Dok CHA
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Patent number: 9057941Abstract: Provided is a front reflection screen for a front projection display apparatus. The front reflection screen includes a reflection layer configured to reflect an incident light including an image light projected from a projector and an external light, and a tint layer disposed before the reflection layer and including light absorbing particles to block a portion of the incident light.Type: GrantFiled: November 20, 2013Date of Patent: June 16, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong-ho Nho, Sung-tae Kim, Sang-hyun Sohn, Won-yong Lee, Yong-Dok Cha
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Patent number: 8830150Abstract: Three-dimensional (3D) glasses according to the present disclosure are interconnected to a 3D display apparatus and include: a glass unit, a glass driving unit which drives the glass unit, an infrared (IR) sensor unit which receives a sync signal transmitted from the 3D display apparatus, a window unit which, when the 3D glasses are directed to the 3D display apparatus, transmits the sync signal to the IR sensor unit and transmits external IR light, incident from a direction different from the direction of the 3D display apparatus, away from the IR sensor unit, and a controlling unit which controls the glass driving unit based on the sync signal.Type: GrantFiled: March 18, 2011Date of Patent: September 9, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jeong-ho Nho, Yong-Dok Cha
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Publication number: 20140139914Abstract: Provided is a front reflection screen for a front projection display apparatus. The front reflection screen includes a reflection layer configured to reflect an incident light including an image light projected from a projector and an external light, and a tint layer disposed before the reflection layer and including light absorbing particles to block a portion of the incident light.Type: ApplicationFiled: November 20, 2013Publication date: May 22, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Jeong-ho NHO, Sung-tae KIM, Sang-hyun SOHN, Won-yong LEE, Yong-Dok CHA
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Patent number: 8414129Abstract: An optical system is provided. The optical system includes a luminous system which comprises a plurality of light source devices and an image unit; and a projection system which receives light having an image through the luminous system, and enlarges and projects the light, wherein the plurality of light source devices comprise a reflection member which reflects light beam emitted from the light source devices, and are disposed so that the light beam emitted from the light source devices is reflected by the reflection member one time and enters to the image unit.Type: GrantFiled: November 16, 2009Date of Patent: April 9, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-hyun Park, Jeong-ho Nho, Sung-tae Kim, Won-yong Lee, Yong-dok Cha
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Patent number: 8395601Abstract: A touch sensing system which senses a touch position on a screen, including a light source to emit light; a light deflection unit to deflect the light emitted from the light source, a light guide plate which is arranged opposite to the screen and guides the light deflected by the light deflection unit to different positions on the screen according to an incident position, a light detector to receive at least part of the light reflected in a touch position on the screen, and a controller to calculate the touch position on the screen based on a point of time when the light detector detects the light.Type: GrantFiled: September 2, 2009Date of Patent: March 12, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Jeong-ho Nho, Yong-dok Cha
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Patent number: 8384846Abstract: A backlight unit including: a light emitting diode (LED) module including a metal substrate and an LED which is disposed on a first side of the metal substrate; a frame on which the LED module is mounted; a first mounting portion formed lengthwise on the LED module; and a second mounting portion formed on the frame, the second mounting portion remaining within a width of the LED module.Type: GrantFiled: April 30, 2009Date of Patent: February 26, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-hyun Park, Myung-ryul Jung, Yong-dok Cha, Jun-seok Park
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Publication number: 20120050628Abstract: A stereoscopic imaging system to prevent deterioration in brightness and optical characteristics due to deviation of an optical axis upon formation of a stereoscopic image is provided. The stereoscopic imaging system includes a stereoscopic image display device to output linearly polarized light, a phase difference plate provided at a front surface of the stereoscopic image display device and which converts the linearly polarized light output from the stereoscopic image display device into circularly polarized light, and liquid crystal shutter glasses having a phase difference plate attached to a front surface thereof and which restores the circularly polarized light having passed through the phase difference plate into the linearly polarized light. Upon formation of a stereoscopic image, the liquid crystal shutter glasses may restore light output from the stereoscopic image display device without loss.Type: ApplicationFiled: August 16, 2011Publication date: March 1, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Hyun CHO, Yong Dok CHA
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Publication number: 20110292010Abstract: Three-dimensional (3D) glasses according to the present disclosure are interconnected to a 3D display apparatus and include: a glass unit, a glass driving unit which drives the glass unit, an infrared (IR) sensor unit which receives a sync signal transmitted from the 3D display apparatus, a window unit which, when the 3D glasses are directed to the 3D display apparatus, transmits the sync signal to the IR sensor unit and transmits external IR light, incident from a direction different from the direction of the 3D display apparatus, away from the IR sensor unit, and a controlling unit which controls the glass driving unit based on the sync signal.Type: ApplicationFiled: March 18, 2011Publication date: December 1, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong-ho NHO, Yong-Dok CHA