Patents by Inventor Jae Hyuk Chang

Jae Hyuk 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).

  • Publication number: 20160195764
    Abstract: A display apparatus includes first, second and third substrates, first and second liquid crystal layers, first and second polarizing elements and a phase retarding element. The first substrate includes a first electrode part. The first liquid crystal layer is disposed on the first substrate. The second substrate is disposed on the first liquid crystal layer and includes a color filter and a second electrode part on a first surface and a third electrode part on a second surface. The second liquid crystal layer is disposed on the second substrate. The third substrate is disposed on the second liquid crystal layer and includes a fourth electrode part on a first surface. The first polarizing element is disposed under the first liquid crystal layer. The second polarizing element is disposed over the first liquid crystal layer. The phase retarding element is disposed over the second liquid crystal layer.
    Type: Application
    Filed: March 17, 2016
    Publication date: July 7, 2016
    Inventors: DAE-YOUNG LEE, GUG-RAE JO, JAE-HYUK CHANG, YOUN-GU LEE
  • Publication number: 20160195806
    Abstract: A photoresist composition including 5 wt % to 10 wt % of a binder resin, 5 wt % to 10 wt % of a photopolymerization monomer, 1 wt % to 5 wt % of a photopolymerization initiator comprising an oxime ester-based compound and activated by light in a wavelength range of 400 nm to 410 nm, 5 wt % to 10 wt % of a black coloring agent, and a residual amount of a solvent.
    Type: Application
    Filed: October 13, 2015
    Publication date: July 7, 2016
    Inventors: Ki Beom LEE, Hyun-Seok KIM, Hi Kuk LEE, Jae Hyuk CHANG
  • Patent number: 9367182
    Abstract: Disclosed is a panel operating apparatus. The panel operating apparatus changes a state of a display device electrically connected to a circuit board located below a panel. The panel operating apparatus includes a tact member mounted on the circuit board, and a resilient member electrically connected to a circuit pattern of the circuit board and separated from the panel and the circuit board. The resilient member is selectively brought into contact with the panel or the tact member depending on a degree of pressure applied to the panel, thereby allowing the apparatus to be operated in a tact manner when the apparatus cannot be operated in a touch manner due to individual features of operators or external conditions.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: June 14, 2016
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Hee Jeong Ban, Jae-Hyuk Chang, Hyun-Seok Kim
  • Patent number: 9366975
    Abstract: A stage transferring device invention includes: a transferring stage upon which an object is mounted and which transfers the object in an x-y plane; and a stage position measuring device. The stage position measuring device includes a one-dimensional scale on the transferring stage; a one-dimensional scale reading head which is configured to overlap the one-dimensional scale, irradiate a measuring beam to the overlapped one-dimensional scale and measure a 1D y-axis coordinate of the transferring stage; a two-dimensional encoder on the transferring stage; and a two-dimensional encoder reading head which is configured to overlap the two-dimensional encoder, irradiate a measuring beam to the overlapped two-dimensional encoder and measure a 2D x-axis coordinate and a 2D y-axis coordinate of the transferring stage.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: June 14, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hi Kuk Lee, Sang Don Jang, Jae Hyuk Chang, Hyang-Shik Kong, Cha-Dong Kim, Chang Hoon Kim, Jung-In Park, Sang Hyun Yun
  • Patent number: 9335631
    Abstract: A photosensitive resin composition includes an acid-labile resin of about 5 wt % to about 25 wt %, a monomer of about 5 wt % to about 10 wt %, a photoacid generator of about 5 wt % to about 10 wt %, a photoreaction accelerator of about 1 wt % to about 5 wt %, and a solvent of about 50 wt % to about 84 wt %, wherein the acid-labile resin comprises a repeating unit containing an acid group, and a protecting group configured to protect the repeating unit.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: May 10, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Beom Lee, Sang-Hyun Yun, Hi-Kuk Lee, Jae-Hyuk Chang, Chang-Hoon Kim, Jung-In Park
  • Publication number: 20160116847
    Abstract: A maskless exposure device includes an exposure head including a digital micro-mirror device and an exposure source, the digital micro-mirror device being configured to reflect a source beam outputted from the exposure source to a substrate and a system controller configured to control the digital micro-mirror device by using a graphic data system file. The graphic data system file includes data regarding patterns to be formed on the substrate. A pattern extending in a direction parallel to a scan direction of the exposure head includes a first pattern portion having a first width that is greater than a target width and a second pattern portion alternately disposed with the first pattern portion and having a second width that is less than the target width.
    Type: Application
    Filed: June 19, 2015
    Publication date: April 28, 2016
    Inventors: Hyun-Seok Kim, Sang-Hyun Yun, Hi-Kuk Lee, Jae-Hyuk Chang, Sang-Hyun Lee, Jung-In Park, Jung-Chul Heo, Kab-Jong Seo, Ki-Beom Lee, Jun-Ho Sim
  • Publication number: 20160109809
    Abstract: A maskless exposure device including a light source configured to emit an exposure beam, a light modulation element configured to modulate the exposure beam according to an exposure pattern, a projection optical system configured to transfer a modulated exposure beam to a substrate as a beam spot array, a beam measurement part configured to measure a beam data of the beam spot array, and a compensating mask generator configured to generate a compensating mask by utilizing a measured data of the exposure beam for compensating cumulative illumination, wherein the compensating mask generator is configured to turn off left and right beams of a first selected spot beam selected by the beam data, and then to turn off a second selected spot beam.
    Type: Application
    Filed: August 20, 2015
    Publication date: April 21, 2016
    Inventors: Hi-Kuk Lee, Jae-Young Jang, Jae-Hyuk Chang, Sang-Don Jang
  • Patent number: 9316877
    Abstract: A display apparatus includes first, second and third substrates, first and second liquid crystal layers, first and second polarizing elements and a phase retarding element. The first substrate includes a first electrode part. The first liquid crystal layer is disposed on the first substrate. The second substrate is disposed on the first liquid crystal layer and includes a color filter and a second electrode part on a first surface and a third electrode part on a second surface. The second liquid crystal layer is disposed on the second substrate. The third substrate is disposed on the second liquid crystal layer and includes a fourth electrode part on a first surface. The first polarizing element is disposed under the first liquid crystal layer. The second polarizing element is disposed over the first liquid crystal layer. The phase retarding element is disposed over the second liquid crystal layer.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: April 19, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae-Young Lee, Gug-Rae Jo, Jae-Hyuk Chang, Youn-Gu Lee
  • Publication number: 20160077449
    Abstract: A maskless exposure device includes an exposure head including a digital micro-mirror device. The digital micro-mirror device is configured to transmit a source beam applied from an exposure source to a substrate. A system control part is configured to control the digital micro-mirror device by using a graphic data system file. The graphic data system file includes data for forming a source electrode, a drain electrode and a channel portion disposed between the source electrode and the drain electrode. The graphic system file includes data for forming the channel portion extending in a diagonal direction with respect to a scan direction of the exposure head.
    Type: Application
    Filed: March 2, 2015
    Publication date: March 17, 2016
    Inventors: Jung-Chul HEO, Hi-Kuk LEE, Jae-Hyuk CHANG, Sang-Hyun LEE, Jung-In PARK, Sang-Hyun YUN, Ki-Beom LEE, Hyun-Seok KIM, Kab-Jong SEO, Jun-Ho SIM, Byoung-Min YUN, Sang-Don JANG, Jae-Young JANG, Chang-Hoon KIM
  • Publication number: 20160054660
    Abstract: A maskless exposure device includes an exposure head including a digital micro-mirror device, the digital micro-mirror device being configured to scan an exposure beam to a substrate by reflecting a source beam from an exposure source; and a system control part configured to control the digital micro-mirror device by utilizing a graphic data system file. The graphic data system file includes data for a source electrode, a drain electrode and a channel portion between the source electrode and the drain electrode in a plan view. The channel portion includes a first portion extending in a direction perpendicular to a scan direction of the exposure head. A width of the first portion of the channel portion is defined to be a multiple of a pulse event generation of the exposure beam.
    Type: Application
    Filed: March 20, 2015
    Publication date: February 25, 2016
    Inventors: Sang-Hyun Lee, Hyun-Seok Kim, Jung-Chul Heo, Hi-Kuk Lee, Sang-Hyun Yun, Ki-Beom Lee, Chang-Hoon Kim, Jung-In Park, Kab-Jong Seo, Jun-Ho Sim, Jae-Hyuk Chang
  • Patent number: 9260263
    Abstract: A substrate aligning unit includes a first driving roll, a second driving roll, a web guider, an encoder roll, and a controller. The first driving roll transfers a substrate in a first direction. The second driving roll is disposed spaced apart from the first driving roll in the first direction and transfers the substrate in the first direction. The web guider controls a position of the substrate in a second direction substantially perpendicular to the first direction. The encoder roll senses the position of the substrate to generate a sensing signal. The controller controls the first driving roll, the second driving roll, and the web guider based on the sensing signal.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: February 16, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyeong-Min Yeo, Min-Uk Kim, Hyun-Seok Kim, Sin Kwon, Jae-Hyuk Chang, Sung-Hee Lee
  • Publication number: 20150248062
    Abstract: A method for digitally exposing a substrate includes generating first horizontal pattern area graphic data and second horizontal pattern area graphic data, where the first horizontal pattern area graphic data corresponds to a first pattern, and the second horizontal pattern area graphic data corresponds to a second pattern, generating a second light incident into the substrate by changing a light path of a first light based on the first horizontal pattern area graphic data and the second horizontal pattern area graphic data, and forming a first pattern on the substrate from the first horizontal pattern area graphic data and a second pattern on the substrate spaced apart in a first direction from the first pattern from the second horizontal pattern area graphic data by exposing the substrate with the second light in a second direction perpendicular to the first direction in a plan view.
    Type: Application
    Filed: August 14, 2014
    Publication date: September 3, 2015
    Inventors: SANG-HYUN YUN, HYUN-SEOK KIM, HI-KUK LEE, JUNG-IN PARK, JAE-HYUK CHANG, CHANG-HOON KIM, KI-BEOM LEE
  • Publication number: 20150232296
    Abstract: A flexible and continuous substrates-conveying sheet has a plurality of to be processed substrates disposed on or in it. A nondestructive transferring unit includes a plurality of first transferring rolls and a plurality of second transferring rolls. The first transferring rolls make contact with a first surface of the substrates-conveying sheet where that surface can have electrostatically-induced charge formed thereon. Each of the first transferring rolls includes a first central portion charged with a positive electric charge and a first outer portion surrounding the first central portion. The second transferring rolls make contact with the first surface of the substrates-conveying sheet. The second transferring rolls are disposed alternately with the first transferring rolls. Each of the second transferring rolls includes a second central portion charged with a negative electric charge and a second outer portion surrounding the second central portion.
    Type: Application
    Filed: May 1, 2015
    Publication date: August 20, 2015
    Inventor: Jae-Hyuk CHANG
  • Patent number: 9091871
    Abstract: In a polarizing liquid crystal panel and a display apparatus including the polarizing liquid crystal panel, the polarizing liquid crystal panel includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a plastic substrate, a first electrode on the plastic substrate, and a first alignment layer on the first electrode. The second substrate includes a base substrate which opposes the first substrate, a second electrode on the base substrate, and a second alignment layer on the second electrode. The liquid crystal layer is between the first and second substrates and polarizes a light using an electric field between the first and second electrodes.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: July 28, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae-Hyuk Chang, Han-Sun Ryou, Yu-Deok Seo, Min-Uk Kim, Hyun-Seok Kim, Ki-Beom Lee, Sung-Hee Lee, Seung-Jun Lee, Nam-Ok Jung, Gug-Rae Jo
  • Publication number: 20150205212
    Abstract: A light exposure device is provided. The light exposure device includes a light source, a light modulation part, and a projection optical part. The light modulation part modulates the light based on a predetermined exposure pattern. The projection optical part projects the light from the light modulation part onto a substrate. The projection optical part includes a first optical part, a hole arrangement part, and a second optical part. The first optical part receives the light from the light modulation part. The first optical part includes a plurality of first lenses. The hole arrangement part emits the light from the first optical part. The second optical part emits the light from the hole arrangement part onto the substrate. The second optical part includes a plurality of second lenses. At least one of the first lenses and the second lenses is a transreflective lens.
    Type: Application
    Filed: July 2, 2014
    Publication date: July 23, 2015
    Inventors: KI-BEOM LEE, HI-KUK LEE, CHA-DONG KIM, CHANG-HOON KIM, JUNG-IN PARK, KAB-JONG SEO, JUN-HO SIM, SANG-HYUN YUN, JAE-HYUK CHANG, HYUN-SEOK KIM, SANG-HYUN LEE
  • Patent number: 9081233
    Abstract: A polarizing liquid crystal panel includes a first substrate including a first base substrate, a first alignment layer, and a first electrode between the first base substrate and the first alignment layer, a second substrate including a second base substrate, a second alignment layer, and a second electrode between the second base substrate and the second alignment layer, the second substrate facing the first substrate, a spacer between the first and second substrates and maintaining a cell gap therebetween, and a liquid crystal flow preventing portion between the first and second substrates. The liquid crystal flow preventing portion extends in a first direction, and restricts movement of the spacer in a second direction substantially perpendicular to the first direction.
    Type: Grant
    Filed: November 10, 2012
    Date of Patent: July 14, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae-Hwan Jang, Gug-Rae Jo, Min-Uk Kim, Hyun-Seok Kim, Sung-Hee Lee, Jae-Hyuk Chang, Nam-Ok Jung
  • Publication number: 20150168833
    Abstract: A photosensitive resin composition includes an acid-labile resin of about 5 wt % to about 25 wt %, a monomer of about 5 wt % to about 10 wt %, a photoacid generator of about 5 wt % to about 10 wt %, a photoreaction accelerator of about 1 wt % to about 5 wt %, and a solvent of about 50 wt % to about 84 wt %, wherein the acid-labile resin comprises a repeating unit containing an acid group, and a protecting group configured to protect the repeating unit.
    Type: Application
    Filed: July 29, 2014
    Publication date: June 18, 2015
    Inventors: Ki-Beom Lee, Sang-Hyun Yun, Hi-Kuk Lee, Jae-Hyuk Chang, Chang-Hoon Kim, Jung-In Park
  • Patent number: 9046779
    Abstract: The present invention relates to a method of fabricating a display device using a maskless exposure apparatus, and the display device, and more particularly, to a method of fabricating a display device by using a maskless exposure apparatus, which is capable of preventing a stain from being viewed, and the display device.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: June 2, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Hyun Yun, Cha-Dong Kim, Jung-In Park, Jae Hyuk Chang, Hi Kuk Lee
  • Patent number: 9022270
    Abstract: A flexible and continuous substrates-conveying sheet has a plurality of to be processed substrates disposed on or in it. A nondestructive transferring unit includes a plurality of first transferring rolls and a plurality of second transferring rolls. The first transferring rolls make contact with a first surface of the substrates-conveying sheet where that surface can have electrostatically-induced charge formed thereon. Each of the first transferring rolls includes a first central portion charged with a positive electric charge and a first outer portion surrounding the first central portion. The second transferring rolls make contact with the first surface of the substrates-conveying sheet. The second transferring rolls are disposed alternately with the first transferring rolls. Each of the second transferring rolls includes a second central portion charged with a negative electric charge and a second outer portion surrounding the second central portion.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: May 5, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jae-Hyuk Chang
  • Patent number: 9023558
    Abstract: Exemplary embodiments of the present invention relate to a photoresist composition and method of forming a color filter using the same. A photoresist composition according to an exemplary embodiment includes about 5% by weight to about 10% by weight of a binder resin, about 5% by weight to about 10% by weight of a monomer, about 1% by weight to about 15% by weight of a photo initiator configured to be activated a light having a peak wavelength from about 400 nm to about 410 nm, about 1% by weight to about 10% by weight of a pigment, about 0.01% by weight to about 1% by weight of a pigment dispersing agent, and a solvent.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: May 5, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Beom Lee, Su-Yeon Sim, Jae-Hyuk Chang, Chang-Hoon Kim, Hi-Kuk Lee