Patents by Inventor Tae-woon Cha

Tae-woon 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).

  • Patent number: 11778858
    Abstract: An electronic device may have a display with an array of display pixels. To increase the efficiency of the display, the display may also include an array of microlenses. Each microlens may overlap and focus light from a respective pixel. Pixels for one of the colors of light may have a high aspect ratio. These pixels may be covered by two microlenses or a single cylindrical microlens. The microlens dimensions may be tuned to mitigate non-uniformities in the brightness profiles of the pixels. The microlens edges may be laterally shifted towards or away from the center of the light-emitting areas to either reduce or increase the focusing power of the microlens. The microlenses and color filter elements in each pixel may also be shifted to account for the chief ray angle of the display.
    Type: Grant
    Filed: November 2, 2021
    Date of Patent: October 3, 2023
    Assignee: APPLE INC.
    Inventors: Yuan Chen, Tae Woon Cha, Jie Li, Junhwan Lim, Xiaokai Li, Zhibing Ge, Guanjun Tan, Giovanni Carbone, Jose A. Dominguez-Caballero, Thanh Son Nguyen
  • Patent number: 10690970
    Abstract: A liquid crystal display may have main column spacers and subspacer column spacers. The column spacers may have cross shapes formed from overlapping perpendicular rectangular column spacer portions respectively located on a color filter layer and a thin-film transistor layer. The column spacers may have a hybrid configuration in which some of the rectangular portions on the thin-film transistor layer extend vertically and some extend horizontally. Column spacers may be formed from planarization layer material, may be formed from locally thickened portions of a planarization layer, and may have circular shapes.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: June 23, 2020
    Assignee: Apple Inc.
    Inventors: Chia Hsuan Tai, Cheng Chen, Da Yu, Enkhamgalan Dorjgotov, Sang Un Choi, Shih-Chyuan Fan Jiang, Tae Woon Cha, Yeon Sik Ham, Yuan Chen, Zhibing Ge, Hossein Nemati
  • Patent number: 10416500
    Abstract: A display device includes a lower display panel, an upper display panel facing the lower display panel, a metal oxide layer surrounding outermost surfaces of the upper display panel and the lower display panel, and a barrier layer surrounding the metal oxide layer. The barrier layer includes a self-assembled monolayer.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: September 17, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woo Yong Sung, A Ram Lee, Tae Woon Cha, Sang Youn Han
  • Patent number: 10303013
    Abstract: An electronic device may have a housing and a display in the housing. The display may have one or more curved edges such as curved edges associated with rounded corners in the display and housing. The display may have an array of pixels. The display may include full-strength pixels and may have a band of antialiasing pixels having selectively reduced strengths to visually smooth content displayed along the curved edges. The antialiasing pixels may include single-opening pixels that each have a single opaque masking layer opening and may include dual-opening pixels that each include a pair of opaque masking layer openings. The single-opening pixels may be stronger than the dual-opening pixels.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: May 28, 2019
    Assignee: Apple Inc.
    Inventors: Hossein Nemati, Pei-En Chang, Yuan Chen, Tae Woon Cha, Sung H. Kim, Chia Hsuan Tai
  • Patent number: 10162092
    Abstract: A display panel includes an array substrate, an opposite substrate facing the array substrate, and a liquid crystal layer between the substrates. The array substrate includes a first polarizer, a first insulating layer covering the first metal layer, a gate electrode on the first insulating layer, a gate insulation layer on the gate electrode, a channel layer on the gate insulation layer, source and drain electrodes on the channel layer, a protecting layer covering the source and drain electrodes and including a contact hole exposing the drain electrode, and a first electrode on the protecting layer and electrically connected to the drain electrode through the contact hole. The first polarizer includes a first substrate, a first antistatic layer on the first substrate and including a conductive material, and a first metal layer on the first antistatic layer and including a plurality of protrusions which form a wire grid pattern.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: December 25, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Gun Choi, Woo-Yong Sung, Tae-Woon Cha
  • Patent number: 10139683
    Abstract: A mother substrate assembly according to an exemplary embodiment of the present invention includes: a first mother substrate and a second mother substrate formed with a plurality of unit liquid crystal panels; and a sealant formed between the first mother substrate and the second mother substrate and combining the mother substrates, wherein the sealant encloses a circumference of each unit liquid crystal panel, and includes a first irradiation line formed in the sealant, and a second irradiation line formed in the sealant of a side closer to the unit liquid crystal panel than the first irradiation line.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: November 27, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min Su Kim, Jang-Hyun Kim, Tae Wook Kang, Tae Woon Cha
  • Publication number: 20180246363
    Abstract: An electronic device may have a housing and a display in the housing. The display may have one or more curved edges such as curved edges associated with rounded corners in the display and housing. The display may have an array of pixels. The display may include full-strength pixels and may have a band of antialiasing pixels having selectively reduced strengths to visually smooth content displayed along the curved edges. The antialiasing pixels may include single-opening pixels that each have a single opaque masking layer opening and may include dual-opening pixels that each include a pair of opaque masking layer openings. The single-opening pixels may be stronger than the dual-opening pixels.
    Type: Application
    Filed: April 30, 2018
    Publication date: August 30, 2018
    Inventors: Hossein Nemati, Pei-En Chang, Yuan Chen, Tae Woon Cha, Sung H. Kim, Chia Hsuan Tai
  • Patent number: 9946114
    Abstract: A display device includes: a display substrate including a display area including a plurality of pixel areas and a non-display area at edge sides of the display area; and an aligning agent-accommodating structure including a capping layer disposed in the non-display area to be opened inward of the display substrate. The aligning agent-accommodating structure accommodates an aligning agent applied to the display area.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: April 17, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Gun Choi, Seung-Yeon Chae, Tae Woon Cha
  • Patent number: 9869900
    Abstract: A liquid crystal display panel includes substrates opposed to each other, a liquid crystal layer interposed between the substrates, a seal line surrounding an outer peripheral portion of the liquid crystal layer and disposed between the substrates and a liquid crystal alignment layer including a polyimide, the liquid crystal alignment layer including a first region and a second region disposed in an outer peripheral portion of the first region and disposed on one surface of at least one of the substrates, wherein at least a portion of the second region is overlapped with the seal line, the second region having a surface roughness value greater than that of the first region.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: January 16, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min Su Kim, Jang Hyun Kim, Joo Young Yoon, Hyoung Sub Lee, Tae Woon Cha
  • Patent number: 9796050
    Abstract: A method for manufacturing a display panel includes providing a mother substrate that includes a display area and a non-display area, and includes a first substrate, a second substrate facing the first substrate, and a sealant provided between the first substrate and the second substrate, generating a crack on the sealant through irradiation of laser onto the sealant between the first substrate and the second substrate, and cutting a part of the second substrate and a part of the sealant at a position corresponding to the crack.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: October 24, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jang Hyun Kim, Min Su Kim, Tae Woon Cha
  • Publication number: 20170293174
    Abstract: A liquid crystal display may have main column spacers and subspacer column spacers. The column spacers may have cross shapes formed from overlapping perpendicular rectangular column spacer portions respectively located on a color filter layer and a thin-film transistor layer. The column spacers may have a hybrid configuration in which some of the rectangular portions on the thin-film transistor layer extend vertically and some extend horizontally. Column spacers may be formed from planarization layer material, may be formed from locally thickened portions of a planarization layer, and may have circular shapes.
    Type: Application
    Filed: September 8, 2016
    Publication date: October 12, 2017
    Inventors: Chia Hsuan Tai, Cheng Chen, Da Yu, Enkhamgalan Dorjgotov, Sang Un Choi, Shih-Chyuan Fan Jiang, Tae Woon Cha, Yeon Sik Ham, Yuan Chen, Zhibing Ge, Hossein Nemati
  • Patent number: 9704936
    Abstract: An organic light emitting diode (OLED) display device including: a substrate; first, second and third thin film transistors sequentially laminated over the substrate; a pixel definition layer formed over the substrate and defining a pixel area; and first, second and third organic light emitting diode elements formed over the substrate, sequentially laminated in the pixel area, and respectively connected to the first, second and third thin film transistors.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: July 11, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Yeon Chae, Sang Gun Choi, Tae Woon Cha
  • Patent number: 9618812
    Abstract: Provided are a liquid crystal display and a method of fabricating the liquid crystal display. The liquid crystal display comprises: a substrate; a signal electrode on the substrate; a first light-blocking pattern on the signal electrode and having a trench extending to and exposing at least part of the signal electrode; and a second light-blocking pattern on the trench of the first light-blocking pattern and covering the signal electrode, wherein the second light-blocking pattern comprises at least one metal layer.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: April 11, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae Woon Cha, Sang Gun Choi, Ha Young Park
  • Patent number: 9568728
    Abstract: An electrowetting display device includes a first substrate comprising a wall pattern surrounding a pixel electrode disposed in a display area of the first substrate, a spaced apart second substrate comprising a common electrode and a dam member disposed in a peripheral area surrounding the display area. The dam member has sealable openings (a.k.a. sealable dam spillways) through which there is discharged an excess portion of an excessively supplied wetting layer, the discharge of the excess occurring while the first and second substrates are brought together about top and bottom portions of a sealing ring that seals them together.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: February 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Hwan Kim, Sung-Ku Baek, Gil-Hwan Yeo, Tae-Woon Cha, Gyung-Mo Tahk
  • Publication number: 20170038621
    Abstract: A display device includes a lower display panel, an upper display panel facing the lower display panel, a metal oxide layer surrounding outermost surfaces of the upper display panel and the lower display panel, and a barrier layer surrounding the metal oxide layer. The barrier layer includes a self-assembled monolayer.
    Type: Application
    Filed: October 18, 2016
    Publication date: February 9, 2017
    Inventors: Woo Yong SUNG, A Ram LEE, Tae Woon CHA, Sang Youn HAN
  • Patent number: 9557610
    Abstract: Provided is a display device capable of preventing a liquid crystal from being left outside a microcavity. The display device includes: a substrate; a pixel electrode formed on the substrate; a roof layer formed on the pixel electrode so as to be spaced apart from the pixel electrode with a plurality of microcavities therebetween; a light blocking member positioned between two microcavities of the plurality of microcavities, overlapping with a first edge of one microcavity of the two microcavities, and not overlapping with a second edge of the other microcavity; an injection hole exposing a part of the microcavity; a liquid crystal layer filling the microcavity; and an encapsulation layer formed on the roof layer so as to cover the injection hole to seal the microcavity.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: January 31, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Si Kwang Kim, Tae Gyun Kim, Hyoung Sub Lee, Woo Yong Sung, Tae Woon Cha, Sang Gun Choi
  • Patent number: 9523879
    Abstract: A liquid crystal display comprises: a substrate having a plurality of pixel regions; first electrode formed on the substrate in each of the pixel regions and including a plurality of separated branch electrodes; a cover layer forming a cavity with the substrate, the cover layer including side walls formed on the substrate to partition the plurality of pixel regions and a roof formed on the side walls; a second electrode formed on a bottom surface of the cover layer; a capping layer formed in the cavity to cover the first electrode on the substrate and to cover the second electrode on the bottom surface of the roof; an alignment layer formed on the capping layer; and a liquid crystal layer formed through injection of liquid crystal molecules into the cavity.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: December 20, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Woo Yong Sung, A Ram Lee, Tae Woon Cha, Seung Yeon Chae, Sang Gun Choi
  • Publication number: 20160349499
    Abstract: An electrowetting display device includes a first substrate comprising a wall pattern surrounding a pixel electrode disposed in a display area of the first substrate, a spaced apart second substrate comprising a common electrode and a dam member disposed in a peripheral area surrounding the display area. The dam member has sealable openings (a.k.a. sealable dam spillways) through which there is discharged an excess portion of an excessively supplied wetting layer, the discharge of the excess occurring while the first and second substrates are brought together about top and bottom portions of a sealing ring that seals them together.
    Type: Application
    Filed: August 11, 2016
    Publication date: December 1, 2016
    Inventors: Dong-Hwan KIM, Sung-Ku BAEK, Gil-Hwan YEO, Tae-Woon CHA, Gyung-Mo TAHK
  • Publication number: 20160320651
    Abstract: A manufacturing method of a liquid crystal display includes: providing a thin film transistor on a substrate; providing a pixel electrode connected to the thin film transistor; providing a microcavity layer including a liquid crystal material on the pixel electrode; providing a supporting member layer on the microcavity layer; patterning the supporting member layer to form a plurality of recess portions therein; and providing a plurality of touch signal lines for transmitting a touch signal in the plurality of recess portions.
    Type: Application
    Filed: July 14, 2016
    Publication date: November 3, 2016
    Inventors: Sang Gun CHOI, Woo Yong SUNG, Tae Woon CHA
  • Patent number: 9482903
    Abstract: A display device includes a lower display panel, an upper display panel facing the lower display panel, a metal oxide layer surrounding outermost surfaces of the upper display panel and the lower display panel, and a barrier layer surrounding the metal oxide layer. The barrier layer includes a self-assembled monolayer.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: November 1, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woo Yong Sung, A Ram Lee, Tae Woon Cha, Sang Youn Han