Patents by Inventor Don-Chan Cho
Don-Chan Cho 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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Publication number: 20150185543Abstract: A display device includes: a substrate; a thin film transistor; a pixel electrode; a common electrode; a liquid crystal layer; and an encapsulation layer. The thin film transistor is disposed on the substrate. The pixel electrode is disposed on the thin film transistor. The common electrode is disposed on the pixel electrode and is separated from the pixel electrode via a microcavity therebetween. The liquid crystal layer fills the microcavity. The encapsulation layer is configured to seal the microcavity, wherein the encapsulation layer has an opening positioned at a portion overlapping the microcavity.Type: ApplicationFiled: May 6, 2014Publication date: July 2, 2015Applicant: Samsung Display Co., Ltd.Inventors: Seon Uk LEE, Woo Jae LEE, Seong Gyu KWON, Don Chan CHO
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Publication number: 20150015825Abstract: A display device includes a substrate including a plurality of pixel areas, a thin film transistor positioned on the substrate, a first insulating layer positioned on the thin film transistor, a pixel electrode connected with the thin film transistor and positioned on the first insulating layer, a common electrode positioned on the pixel electrode and spaced apart from the pixel electrode by a microcavity, a second insulating layer positioned on the common electrode, a roof layer positioned on the second insulating layer, a thickness of the roof layer being about 4 ?m to about 50 ?m, an injection hole through the common electrode, the second insulating layer, and the roof layer, the injection hole exposing a part of the microcavity, a liquid crystal layer filling the microcavity, and an overcoat on the roof layer and extending into the injection hole, the overcoat sealing the microcavity.Type: ApplicationFiled: April 29, 2014Publication date: January 15, 2015Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Kyung Tae CHAE, Seon Uk LEE, Chung Hyuk LEE, Tae Woo LIM, Don Chan CHO
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Publication number: 20150002801Abstract: The present invention relates to a liquid crystal display including: an insulating substrate; and a plurality of pixels arranged in a matrix shape over the insulating substrate. The pixels include a display pixel disposed in a display region and a dummy pixel disposed in a dummy region, the dummy region is disposed outside the display region, and the display pixel includes a liquid crystal layer injected into a microcavity.Type: ApplicationFiled: May 30, 2014Publication date: January 1, 2015Applicant: Samsung Display Co., Ltd.Inventors: Yu Jin KIM, Seon Uk LEE, Tae Woo LIM, Don Chan CHO, Kyung Tae CHAE
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Publication number: 20140375931Abstract: A display device may include a substrate, a first roof layer formed of a material, a second roof layer formed of the material and spaced from the substrate, and a subpixel electrode disposed between the substrate and the first roof layer. The display device may further include a common electrode member disposed between the subpixel electrode and the first roof layer. The common electrode member may overlap the first roof layer in a first direction without extending beyond the first roof layer in a second direction. The first direction may be perpendicular to a surface of the substrate. The second direction may be parallel to the surface of the substrate. The display device may further include a liquid crystal set disposed between the subpixel electrode and the common electrode member.Type: ApplicationFiled: January 10, 2014Publication date: December 25, 2014Applicant: Samsung Display Co., Ltd.Inventors: Won Tae KIM, You Young Jin, Kyung Tae CHAE, Don Chan CHO, Seok-Joon HONG
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Patent number: 8845168Abstract: A backlight assembly includes a light source part, a base substrate, an insulation layer, and a reflection layer. The base substrate includes a light incident surface into which the light from the light source part is incident, and a light exiting surface adjacent to the light incident surface and through which the light exits. The insulation layer is formed on the light exiting surface of the base substrate. The reflection layer is formed on the insulation layer and forms a concave pattern along with the base substrate and the insulation layer and has an opening portion through which the light exiting from the light exiting surface passes.Type: GrantFiled: February 1, 2012Date of Patent: September 30, 2014Assignee: Samsung Display Co., Ltd.Inventors: Hyun-Min Cho, Jae-Byung Park, Don-Chan Cho
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Patent number: 8842354Abstract: A display substrate includes a base substrate, a micro shutter, a first driving electrode, a second driving electrode, and a plurality of anchors. The micro shutter includes a flat portion having at least one opening, a main concave portion adjacent to the opening and extending in from the flat portion to a first depth, and at least one sub-concave portion extending in from a bottom surface of the main concave portion to second depth. The first driving electrode is connected to a first side of the micro shutter. The second driving electrode is connected to a second side of the micro shutter. The second side is positioned opposite to the first side. The anchors fix the first and second driving electrodes on the base substrate.Type: GrantFiled: January 16, 2012Date of Patent: September 23, 2014Assignee: Samsung Display Co., Ltd.Inventors: Hyun-Min Cho, Sung-Sik Yun, Jae-Byung Park, Don-Chan Cho, Dae-Hyun Kim, Seon-Tae Yoon
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Patent number: 8817353Abstract: The display apparatus including a microelectromechanical (MEMS) shutter is disclosed. The MEMS shutter is shifted by the switching element in a horizontal direction corresponding to the light control area to turn on or turn off the light control area. A first slit transmits light generated from the light source to the MEMS shutter of a first substrate and a second slit of a second substrate corresponding to the first slit provides apertures by overlapping the first slit and the second slit. The apertures of the MEMS shutter are distributed on a two dimensional plane and form a geometrically symmetric pattern that are capable of enhancing light-use efficiency.Type: GrantFiled: October 26, 2010Date of Patent: August 26, 2014Assignee: Samsung Display Co., Ltd.Inventors: Seul Lee, Jae Byung Park, Don-Chan Cho, Hyun-Min Cho, Gunwoo Kim
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Patent number: 8368055Abstract: Provided are a display device, which has a longer life and can be fabricated simply relative to conventional display devices, and a method of fabricating the display device. The display device includes a substrate which includes first through third subpixel regions, first through third organic light-emitting transistors which are disposed in the first through third subpixel regions, respectively, and are operable to emit light of a first color, and a first fluorescent pattern which is formed on the first organic light-emitting transistor and is operable to cause light of a second color to be emitted.Type: GrantFiled: August 18, 2009Date of Patent: February 5, 2013Assignee: Samsung Display Co., Ltd.Inventors: Jung-Han Shin, Jae-Byung Park, Don-Chan Cho, Jin-Seob Byun, Hyoung-Joo Kim
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Publication number: 20120293852Abstract: A display substrate includes a base substrate, a micro shutter, a first driving electrode, a second driving electrode, and a plurality of anchors. The micro shutter includes a flat portion having at least one opening, a main concave portion adjacent to the opening and extending in from the flat portion to a first depth, and at least one sub-concave portion extending in from a bottom surface of the main concave portion to second depth. The first driving electrode is connected to a first side of the micro shutter. The second driving electrode is connected to a second side of the micro shutter. The second side is positioned opposite to the first side. The anchors fix the first and second driving electrodes on the base substrate.Type: ApplicationFiled: January 16, 2012Publication date: November 22, 2012Inventors: HYUN-MIN CHO, Sung-Sik YUN, Jae-Byung PARK, Don-Chan CHO, Dae-Hyun KIM, Seon-Tae YOON
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Patent number: 8294848Abstract: A liquid crystal display includes, among others, a light diffusion layer comprising a color conversion media layer and a non-conversion layer arranged on the second substrate and a backlight assembly to supply light to the first substrate and the second substrate. The backlight assembly supplies various wavelengths of lights, including blue light or UV ray. The blue rights through the liquid crystal layer enters the color conversion media layers and may generates red lights and green lights. In this case, blue lights go through non-conversion layer and diffuse and scatter out blue lights. The UV rays through the liquid crystal layer enters the color conversion media layers and may generates red light, green lights and blue lights.Type: GrantFiled: August 17, 2009Date of Patent: October 23, 2012Assignee: Samsung Display Co., Ltd.Inventors: Don-Chan Cho, Jae-Byung Park, Jin-Seob Byun, Hae-Il Park
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Publication number: 20120250347Abstract: A backlight assembly includes a light source part, a base substrate, an insulation layer, and a reflection layer. The base substrate includes a light incident surface into which the light from the light source part is incident, and a light exiting surface adjacent to the light incident surface and through which the light exits. The insulation layer is formed on the light exiting surface of the base substrate. The reflection layer is formed on the insulation layer and forms a concave pattern along with the base substrate and the insulation layer and has an opening portion through which the light exiting from the light exiting surface passes.Type: ApplicationFiled: February 1, 2012Publication date: October 4, 2012Inventors: Hyun-Min CHO, Jae-Byung PARK, Don-Chan CHO
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Patent number: 8164820Abstract: A display device includes a first electrode, a second electrode facing the first electrode, a first layer of material disposed between the first electrode and the second electrode, a second layer of material disposed on the first layer of material, and a light source unit emitting blue light incident to the first electrode toward the second electrode. At least one color converting member receives the blue light and generate light having a wavelength different from the wavelength of the blue light. The second layer of material is positioned on the second electrode and is movable along with the second electrode by an attraction force between the first electrode and the second electrode.Type: GrantFiled: August 8, 2008Date of Patent: April 24, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Don-Chan Cho, Jae-Byung Park, Hae-Il Park, Jin-Seob Byun, Sung-Jin Hong, Seul Lee
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Publication number: 20110235147Abstract: The display apparatus including a microelectromechanical (MEMS) shutter is disclosed. The MEMS shutter is shifted by the switching element in a horizontal direction corresponding to the light control area to turn on or turn off the light control area. A first slit transmits light generated from the light source to the MEMS shutter of a first substrate and a second slit of a second substrate corresponding to the first slit provides apertures by overlapping the first slit and the second slit. The apertures of the MEMS shutter are distributed on a two dimensional plane and form a geometrically symmetric pattern that are capable of enhancing light-use efficiency.Type: ApplicationFiled: October 26, 2010Publication date: September 29, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Seul LEE, Jae Byung Park, Don-Chan Cho, Hyun-Min Cho, Gunwoo Kim
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Patent number: 8027078Abstract: The present invention relates to a display device using a microelectromechanical system (MEMS) and to a manufacturing method thereof. A display device using a MEMS includes a first substrate comprising a first index of refraction; a second substrate facing the first substrate; a reflective layer formed on the first substrate and having a first aperture; a transparent layer covering the first aperture and comprising a second refractive index; and a shutter arranged on the second substrate, wherein a difference between the first refractive index and the second refractive index is equal to or less than 0.1.Type: GrantFiled: April 22, 2010Date of Patent: September 27, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-Min Cho, Sung-Jin Kim, Yu-Kwan Kim, Don-Chan Cho, Seul Lee, Jae-Byung Park, Su-Gyeong Lee, Seon-Tae Yoon
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Publication number: 20110216041Abstract: A touch panel and a touch position detection method are presented. The touch panel includes: a touch unit, a light source unit array positioned along a first edge of the touch unit and including a first light source and a second light source; and a detection unit array positioned along a second edge and including a detection unit generating a detection signal by detecting light from the light source unit array. The first light source radiates light having a first optical axis, the first optical axis extending in a first direction that makes a first angle with respect to a reference direction, and the second light source radiates light having a second optical axis, the second optical axis extending in a second direction that makes the first angle with respect to the reference direction. The reference direction is perpendicular to the second edge.Type: ApplicationFiled: October 26, 2010Publication date: September 8, 2011Inventors: Hyun-Min Cho, Sung-Jin Kim, Jae-Byung Park, Jin-Hwan Kim, Don-Chan Cho, Guk-Hyun Kim, Jong-Hee Kim, Yu-Kwan Kim, Seul Lee
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Patent number: 7973993Abstract: A flat panel display includes a first substrate, a thin film transistor formed on the first substrate, a second substrate facing the first substrate, and a light controller formed on the second substrate, wherein the light controller is electrically connected to the thin film transistor, wherein the light controller includes an opening plate having a plurality of first openings and a light blocker moving horizontally with respect to the opening plate to selectively pass light through the first openings.Type: GrantFiled: August 3, 2009Date of Patent: July 5, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Don-Chan Cho, Jae-Byung Park, Jong-Hyuk Kang, Sung-Jin Hong, Yu-Kwan Kim, Seul Lee
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Publication number: 20110102876Abstract: The present invention relates to a display device using a microelectromechanical system (MEMS) and to a manufacturing method thereof. A display device using a MEMS includes a first substrate comprising a first index of refraction; a second substrate facing the first substrate; a reflective layer formed on the first substrate and having a first aperture; a transparent layer covering the first aperture and comprising a second refractive index; and a shutter arranged on the second substrate, wherein a difference between the first refractive index and the second refractive index is equal to or less than 0.1.Type: ApplicationFiled: April 22, 2010Publication date: May 5, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Hyun-Min CHO, Sung-Jin Kim, Yu-Kwan Kim, Don-Chan Cho, Seul Lee, Jae-Byung Park, Su-Gyeong Lee, Seon-Tae Yoon
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Publication number: 20110032246Abstract: A display device using a microelectromechanical system (“MEMS”) element includes; a display panel including the MEMS element having at least three states, the at least three states including an on state, a half-on state, and an off state and a backlight unit which provides light to the display panel.Type: ApplicationFiled: January 6, 2010Publication date: February 10, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Jin HONG, Jae-Byung PARK, Don-Chan CHO, Hyun-Min CHO, Yu-Kwan KIM, Seul LEE
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Publication number: 20110001738Abstract: A display device includes a gate line, a data line, a switching transistor connected to the data line, a variable resistance unit, a first capacitor connected to the variable resistance unit and a micro-shutter connected to the resistance unit and the first capacitor. The switching transistor is controlled by a gate-on voltage supplied by the gate line, and a resistance of the variable resistance unit is changed based on a data voltage supplied to the variable resistance unit from the data line via the switching transistor. The micro-shutter electrode executes a shutoff operation based on a voltage at a connection node between the variable resistance unit and the first capacitor.Type: ApplicationFiled: December 24, 2009Publication date: January 6, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Jin HONG, Jae-Byung PARK, Sung-Jin KIM, Don-Chan CHO, Hyun-Min CHO
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Patent number: 7864404Abstract: A light guide unit includes a light guide plate and a plurality of light-exiting protrusions. The light guide plate includes a light-entering surface, an upper surface connected to the light-entering surface and a lower surface facing the upper surface. The light-exiting protrusions protrude from the upper surface of the light guide plate to have a cylindrical shape in which a cross-section size thereof increases in a direction away from the upper surface of the light guide plate, the light-exiting protrusions being disposed in a light control area which is turned on or off by a microelectromechanical system shutter. Light guided by the light guide unit to the light control area exits through the light-exiting protrusions.Type: GrantFiled: August 4, 2009Date of Patent: January 4, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Don-Chan Cho, Hyun-Min Cho, Seul Lee, Jae-Byung Park