Patents by Inventor Hee-Keun Lee

Hee-Keun Lee 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).

  • Patent number: 10918156
    Abstract: Disclosed in an embodiment is a pressure detection sensor comprising: an elastic layer including a hole; and an electrode layer including a plurality of electrodes arranged on the elastic layer so as to be spaced apart, wherein the elastic layer includes a variable member arranged in the hole, the plurality of electrodes are electrically connected to each other by outside pressure, and at least one of the plurality of electrodes covers a part of the hole.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: February 16, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Hyun Jin Jo, Won Keun Cho, Jeong Han Kim, Soo Min Lee, Ji Na Lee, In Hee Cho, Sang A Ju
  • Publication number: 20210005693
    Abstract: A display apparatus including a first thin-film transistor, a second thin-film transistor and a third thin-film transistor is provided. The first thin-film transistor includes a first active layer composed of a polysilicon material, a first gate electrode overlapping the first active layer such that a first gate insulating layer is interposed therebetween, a first source electrode and a first drain electrode. The first gate electrode includes n layers. The first source electrode and the first drain electrode are connected to the first active layer. The second thin-film transistor includes a second active layer composed of a polysilicon material, a second gate electrode overlapping the second active layer such that a first gate insulating layer is interposed therebetween, a second source electrode and a second drain electrode. The second gate electrode includes n+1 layers. The second source electrode and the second drain electrode are connected to the second active layer.
    Type: Application
    Filed: July 6, 2020
    Publication date: January 7, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Seong-Pil CHO, Dong-Yup KIM, Kyung-Mo SON, Sang-Soon NOH, Jun-Seuk LEE, Yong-Bin KANG, Kye-Chul CHOI, Sung-Ho MOON, Sang-Gul LEE, Byeong-Keun KIM, Kyoung-Soo LEE, Hyun-Gyo JEONG, Jin-Kyu ROH, Jung-Doo JIN, Ki-Hyun KWON, Hee-Jin JUNG, Jang-Dae KIM, Won-Ho SON, Chan-Ho KIM
  • Patent number: 10847685
    Abstract: A photoluminescence apparatus includes a base substrate, a first color conversion pattern disposed on the base substrate, and having a color conversion material, wherein a first stop pattern is formed at the first color conversion pattern, and a capping layer disposed on the first color conversion pattern for capping the first color conversion pattern, wherein a first hole overlapping the first color conversion pattern in a plan view is formed through the capping layer. The first stop pattern is disposed adjacent to the first hole in a plan view.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: November 24, 2020
    Inventors: Hee-Keun Lee, Taejin Kong, Hoon Kim, Keunwoo Park
  • Publication number: 20200326585
    Abstract: A display panel includes a first display substrate, a second display substrate. The second display substrate includes a substrate, a color conversion layer including a first conversion part configured to absorb light of a first color and to emit light of a second color, a second conversion part configured to absorb the light of the first color and to emit light of a third color, and a third conversion part configured to transmit the light of the first color, and a filter layer including a first filter overlapping with the first conversion part and having the second color, a second filter overlapping with the second conversion part and having the third color, a third filter overlapping with the third conversion part and having the first color, and an auxiliary filter overlapping with the second conversion part and configured to absorb the light of the first color.
    Type: Application
    Filed: June 24, 2020
    Publication date: October 15, 2020
    Inventors: Seung-jin CHU, Hoon KIM, Wontae KIM, Yeogeon YOON, Hee-keun LEE
  • Publication number: 20200273906
    Abstract: A display device includes at least one first and second electrodes extending in a first direction, at least one first and second light emitting elements disposed therebetween, a first contact electrode partially covering the first electrode and contacting a first end of the first light emitting element, a second contact electrode partially covering the second electrode and contacting a third end of the second light emitting element, and a third contact electrode disposed between the first and second contact electrodes and contacting a second end of the first light emitting element and a fourth end of the second light emitting element, in which a distance between the first and second electrodes is greater than a longitudinal length of at least one of the first and second light emitting elements, and the first and second light emitting elements are connected in series between the first and second electrodes.
    Type: Application
    Filed: January 14, 2019
    Publication date: August 27, 2020
    Inventors: Xin Xing LI, Tae Jin KONG, Hee Keun LEE, Hyun Min CHO, Chang II TAE
  • Patent number: 10747047
    Abstract: A display device includes: a light provider; a wavelength conversion layer above the light provider and including a first surface and sides; and a capping layer on the wavelength conversion layer and including a first area provided on the sides of the wavelength conversion layer and a second area provided on the first surface of the wavelength conversion layer, and the first area of the capping layer includes cracks.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: August 18, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee Keun Lee, Won Tae Kim, Yeo Geon Yoon, Seung Jin Chu
  • Patent number: 10707276
    Abstract: An exemplary embodiment of the present inventive concept provides a display device including: a thin film transistor panel comprising a display area and a peripheral area; and a color conversion panel overlapping the thin film transistor panel, wherein the color conversion panel includes: a substrate; a color conversion layer; a first organic layer disposed between the color conversion layer and the thin film transistor panel; a second organic layer disposed between the first organic layer and the thin film transistor panel; and a polarization layer disposed between the second organic layer and the thin film transistor panel, wherein the first organic layer overlaps the display area and the peripheral area, and the second organic layer overlaps the display area.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: July 7, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won Tae Kim, Tae Jin Kong, Hee-Keun Lee, Seung-Jin Chu
  • Patent number: 10698251
    Abstract: A display panel includes a first display substrate, a second display substrate. The second display substrate includes a substrate, a color conversion layer including a first conversion part configured to absorb light of a first color and to emit light of a second color, a second conversion part configured to absorb the light of the first color and to emit light of a third color, and a third conversion part configured to transmit the light of the first color, and a filter layer including a first filter overlapping with the first conversion part and having the second color, a second filter overlapping with the second conversion part and having the third color, a third filter overlapping with the third conversion part and having the first color, and an auxiliary filter overlapping with the second conversion part and configured to absorb the light of the first color.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: June 30, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-jin Chu, Hoon Kim, Wontae Kim, Yeogeon Yoon, Hee-keun Lee
  • Patent number: 10606120
    Abstract: A display device includes: a liquid crystal layer disposed between a first substrate and a second substrate; a color conversion layer disposed between the first substrate and the second substrate and including a first light emitter configured to absorb first color light outputted from a light source and to emit second color light that is different from the first color light; a pixel electrode overlapping a display area; a first transistor connected to the pixel electrode; a driving circuit including a second transistor and providing a driving signal to the first transistor; a light blocking member disposed on the first substrate and overlapping the first transistor; and an polarizing layer disposed between the liquid crystal layer and the color conversion layer and including a wire grid pattern overlapping the display area and a reflection pattern extending from the wire grid pattern to overlap the non-display area.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: March 31, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Keunwoo Park, Taejin Kong, Yeogeon Yoon, Hee-keun Lee
  • Patent number: 10539838
    Abstract: A display device may include a substrate, a transistor, a pixel electrode, a roof layer, and a liquid crystal layer positioned in microcavities between the roof layer and the substrate. The roof layer may include a first roof portion and a second roof portion. The first roof portion may overlap the pixel electrode and may be directly connected to the second roof portion. The second roof portion may be positioned closer to the transistor than the first roof portion. A minimum distance between the substrate and the second roof portion may be less than a minimum distance between the substrate and the first roof portion.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: January 21, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Keun Lee, Myeong Hee Kim, Han Joon Yoo, Dae Ho Lee
  • Publication number: 20190391444
    Abstract: A display device includes a display panel, a color conversion layer disposed on the display panel, and an adhesion member between the display panel and the color conversion layer. The color conversion layer includes a first conversion part configured to one of transmit a first color light and absorb first color light to emit second color light, a second conversion part configured to absorb the first color light to emit third color light, and a third conversion part configured to absorb the first color light to emit fourth color light, the first conversion part, the second conversion part, and the third conversion part are sequentially arranged in a first direction, the adhesion member is disposed on a bottom surface and a side surface of the first conversion part and attached to the display panel, and an air layer is defined between the display panel and the second and third conversion parts.
    Type: Application
    Filed: March 27, 2019
    Publication date: December 26, 2019
    Inventors: Seung-jin CHU, Wontae KIM, Yeogeon YOON, Hee-keun LEE
  • Patent number: 10514567
    Abstract: A display panel with microcavities each having ends of asymmetric cross-sectional area. An exemplary display panel has a substrate; a pixel electrode formed on the substrate; a first black matrix and a second black matrix each disposed on the substrate; and a supporting member disposed on the substrate over the pixel electrode and the black matrix, the supporting member shaped so as to form a microcavity between the pixel electrode and the supporting member, the microcavity having an upper surface proximate to the supporting member and a lower surface opposite the upper surface. The microcavity has one end positioned over the first black matrix, and another end opposite the first end and positioned over the second black matrix; the lower surface of the microcavity has first and second channels disposed therein, the first channel positioned over the first black matrix, and the second channel positioned over the second black matrix.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: December 24, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Keun Lee, Jung Wook Lee, Yeun Tae Kim, Hae Ju Yun
  • Patent number: 10516160
    Abstract: An electrode for a lithium secondary battery includes a current collector, primer layer formed on a side of the current collector and includes a first conductive agent, a first binder and a first dispersant. Further, an active material layer is formed on a side of the primer layer disposed opposite to the current collector and includes an active material. Additionally, the lithium secondary battery includes a positive electrode, a negative electrode or both, a separator disposed between the positive electrode and the negative electrode and an electrolyte. The structural stability and adhesion of the electrode is improved, a ratio of a binder in the active material layer is reduced and the internal resistance is reduced.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: December 24, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Seul Ki Kim, Jong Heon Seol, Hee Soo Na, Chan Sub Lee, Hyung Suk Cho, Jung Keun Yoo, Je Young Kim
  • Publication number: 20190378881
    Abstract: An exemplary embodiment of the present inventive concept provides a display device including: a thin film transistor panel comprising a display area and a peripheral area; and a color conversion panel overlapping the thin film transistor panel, wherein the color conversion panel includes: a substrate; a color conversion layer; a first organic layer disposed between the color conversion layer and the thin film transistor panel; a second organic layer disposed between the first organic layer and the thin film transistor panel; and a polarization layer disposed between the second organic layer and the thin film transistor panel, wherein the first organic layer overlaps the display area and the peripheral area, and the second organic layer overlaps the display area.
    Type: Application
    Filed: November 29, 2018
    Publication date: December 12, 2019
    Inventors: Won Tae KIM, Tae Jin KONG, Hee-Keun LEE, Seung-Jin CHU
  • Publication number: 20190377229
    Abstract: A backlight assembly includes an optical member that includes a light guide plate and a wavelength conversion layer disposed on the light guide plate; and a light source disposed on one side of the light guide plate. The wavelength conversion layer includes scattering particles having a particle size of 200 nm or less, and the scattering particles are of an anatase crystal type of titanium dioxide (TiO2).
    Type: Application
    Filed: January 29, 2019
    Publication date: December 12, 2019
    Inventors: Hee Kwang SONG, Ju Young YOON, Young Keun LEE
  • Publication number: 20190377223
    Abstract: A display device includes: a light provider; a wavelength conversion layer above the light provider and including a first surface and sides; and a capping layer on the wavelength conversion layer and including a first area provided on the sides of the wavelength conversion layer and a second area provided on the first surface of the wavelength conversion layer, and the first area of the capping layer includes cracks.
    Type: Application
    Filed: January 14, 2019
    Publication date: December 12, 2019
    Inventors: Hee Keun LEE, Won Tae KIM, Yeo Geon YOON, Seung Jin CHU
  • Publication number: 20190310522
    Abstract: A color conversion substrate for displaying a first color, a second color, and a third color may include a base substrate, a first light-blocker, a second light-blocker, a pattern layer, a first color converter, and a second color converter. The first light-blocker contacts a surface of the base substrate and may block first light of the third color. The second light-blocker contacts the surface of the base substrate and may block second light of the third color. The pattern layer is disposed on the first light-blocker and the second light-blocker and includes an optical pattern that includes protrusions. The first color converter overlaps the first light-blocker and may convert a first portion of incident light into light of the first color. The second color converter overlaps the second light-blocker and may convert a second portion of the incident light into light of the second color.
    Type: Application
    Filed: October 15, 2018
    Publication date: October 10, 2019
    Inventors: Seung Jin CHU, Yeo Geon YOON, Won Tae KIM, Hoon KIM, Hee Keun LEE
  • Publication number: 20190289951
    Abstract: Disclosed in an embodiment is a pressure detection sensor comprising: an elastic layer including a hole; and an electrode layer including a plurality of electrodes arranged on the elastic layer so as to be spaced apart, wherein the elastic layer includes a variable member arranged in the hole, the plurality of electrodes are electrically connected to each other by outside pressure, and at least one of the plurality of electrodes covers a part of the hole.
    Type: Application
    Filed: May 23, 2017
    Publication date: September 26, 2019
    Inventors: Hyun Jin JO, Won Keun CHO, Jeong Han KIM, Soo Min LEE, Ji Na LEE, In Hee CHO, Sang A JU
  • Publication number: 20190258109
    Abstract: A display panel includes a first display substrate, a second display substrate. The second display substrate includes a substrate, a color conversion layer including a first conversion part configured to absorb light of a first color and to emit light of a second color, a second conversion part configured to absorb the light of the first color and to emit light of a third color, and a third conversion part configured to transmit the light of the first color, and a filter layer including a first filter overlapping with the first conversion part and having the second color, a second filter overlapping with the second conversion part and having the third color, a third filter overlapping with the third conversion part and having the first color, and an auxiliary filter overlapping with the second conversion part and configured to absorb the light of the first color.
    Type: Application
    Filed: February 13, 2019
    Publication date: August 22, 2019
    Inventors: Seung-jin CHU, Hoon KIM, Wontae KIM, Yeogeon YOON, Hee-keun LEE
  • Publication number: 20190243200
    Abstract: A display device includes a display panel and a light source configured to provide a first color light to the display panel. The display panel includes a first display substrate (DS), a second DS facing the first DS, a column spacer disposed between the first and second DSs, and a liquid crystal layer filled between the first and second DSs. The first DS includes: a first base substrate (FBS); a thin film transistor (TFT) disposed on the FBS, the TFT including a gate electrode, first and second electrodes, and an activation layer; a first insulation layer (IL) covering the TFT and disposed on the FBS; and a second IL disposed on the first IL and including an opening exposing a first portion of the first IL overlapping the activation layer. The column spacer is disposed on the first portion to cover the activation layer and shield the first color light.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 8, 2019
    Inventors: Keunwoo Park, Yeogeon Yoon, Hee-keun Lee, Taejin Kong, Wontae Kim, Seok-joon Hong