Patents by Inventor Jin-Hwan Kim
Jin-Hwan Kim 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: 7041333Abstract: A method of manufacturing an optical disc includes easily removing a bump formed on a circumference of the optical disc during forming a transparent layer by using a spin-coating method to form the optical disk having a high-density recording capacity. The method includes preparing a substrate having a diameter larger than that of a desired disc, applying an ultraviolet hardening resin to the substrate and forming a transparent layer having a predetermined thickness by a spin-coating method, illuminating an ultraviolet ray on the transparent layer and a bump formed on a circumference of the transparent layer to be hardened, and cutting out the bump by using a puncher. According to the method, the bump which inevitably occurs when the transparent layer is formed, can be easily cut out by a puncher.Type: GrantFiled: July 5, 2002Date of Patent: May 9, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Do-hoon Chang, Jin-hwan Kim, Myong-do Ro, Du-seop Yoon
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Patent number: 6979095Abstract: A backlight unit includes a light guide panel where a holographic pattern is formed. A point light source emits light to an edge of the light guide panel. A refractive member is provided between the point light source and the light guide panel and reduces an azimuth angle of light incident on the light guide panel. The refractive member includes, from an optical axis of the point light source, a light transmission zone transmitting light as it is, a blaze zone where a blaze pattern having a saw-toothed shape in which one surface near the optical axis and substantially parallel to the optical axis is formed, and a prism zone where a triangular prism pattern is formed. The backlight unit may further include a diffusive member diffusing light emitted from the point light source to be incident on the refractive member.Type: GrantFiled: June 5, 2003Date of Patent: December 27, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Jee-hong Min, Hwan-young Choi, Moon-gyu Lee, Su-mi Lee, Jin-hwan Kim, Jin-seung Choi
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Publication number: 20050269592Abstract: The present invention relates to a terbium borate-based yellow phosphor, a preparation method thereof, and a white semiconductor light emitting device incorporating the same. The terbium borate-based yellow phosphor of the present invention is represented by the general formula (Tb1-x-y-zREXAy)3DaBbO12:Cez (where, RE is at least one rare earth element selected from the group consisting of Y, Lu, Sc, La, Gd, Sm, Pr, Nd, Eu, Dy, Ho, Er, Tm and Yb; A is a typical metal element selected from the group consisting of Li, Na, K, Rb, Cs and Fr; D is a typical amphoteric element selected from the group consisting of Al, In and Ga; 0?x<0.5; 0?y<0.5; 0<z<0.5; 0<a<5; and 0<b<5). The white semiconductor light emitting device of the present invention comprises a semiconductor light emitting diode and the yellow phosphor, which absorbs a portion of light emitted by the semiconductor light emitting diode and emits light of wavelength different from that of the absorbed light.Type: ApplicationFiled: November 15, 2003Publication date: December 8, 2005Inventors: Dong-Yeoul Lee, Yong-Tae Kim, Jin-Hwan Kim, Eun-Joung Kim
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Publication number: 20050253212Abstract: A CMOS image sensor for improving light sensitivity and peripheral brightness ratio, and a method for fabricating the same. The CMOS image sensor includes a substrate on which a light sensor and device isolating insulation films are formed, in which the top of the substrate is coated with a plurality of metal layers and oxide films; a plurality of reflective layers formed inside the metal layers, each being spaced apart; a color filter embedded in a groove formed by etching the oxide films inside the reflective layers by a predetermined thickness; a plurality of protrusions formed on both sides of the top of the color filter, each arranged at a predetermined distance from one another; a flat layer formed on the top of the protrusions and the oxide films; and a micro-lens formed on the top of the flat layer. The reflective layer disposed at the top of the photodiode is made of a material having a high reflectance and low absorptivity.Type: ApplicationFiled: May 16, 2005Publication date: November 17, 2005Inventors: Seung-ho Nam, Jin-hwan Kim, Gee-young Sung
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Patent number: 6935764Abstract: An illumination apparatus for planar display devices, including an optical element for making light travel parallel to an optical axis, is provided. The illumination apparatus includes a dot light source for radiating light, and a light guide plate having the optical element. The optical element is composed of a first refraction facet, which is adjacent to the dot light source and increases the emission angle of the light, and a second refraction facet, which is isolated a predetermined distance from the first refraction facet while facing the first refraction facet and reduces the emission angle of the light. In this structure, the light travels parallel to the optical axis. In the illumination apparatus, the emission angle of incident light is reduced, preferably, the light travels parallel to the optical axis.Type: GrantFiled: September 30, 2002Date of Patent: August 30, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Jin-seung Choi, Hwan-young Choi, Jee-hong Min, Su-mi Lee, Jin-hwan Kim, Moon-gyu Lee
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Patent number: 6866444Abstract: A device installed at a ditch on a road for preventing a backflow of sewage and a malodor is provided. The device includes a frame portion comprising a plurality of frames arranged in parallel with each other, a valve portion being opened or closed in a manner of a lever according to the weight of a flow of the sewage, and a cover portion for covering the frame portion and the valve portion. The cover portion includes flat drain holes formed in plural lines which are arranged in parallel with each other; flow velocity resistance embossings protruding upwardly with a predetermined height in a bar shape; inclined drain holes formed at both ends of the lengthwise direction and inclined upwardly; and a plurality of sliding prevention embossings protruding upwardly from an upper surface of the cover portion, for preventing walkers from sliding thereon.Type: GrantFiled: September 19, 2003Date of Patent: March 15, 2005Assignee: My's Tech Co., LtdInventor: Jin-Hwan Kim
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Publication number: 20050002174Abstract: An edge-light type backlight system including a light guide panel which includes a light incident surface, a light emitting surface, and an optical deflector. The optical deflector is disposed on at least one of the light emitting surface of the light guide panel and a surface opposite to the light emitting surface. The optical deflector includes a first surface and a second surface on opposite sides of a normal line orthogonal to the light incident surface and become farther apart as distance from the light incident surface increases, the first surface and the second surface being perpendicular to the light emitting surface.Type: ApplicationFiled: April 15, 2004Publication date: January 6, 2005Inventors: Jee-hong Min, Hwan-young Choi, Moon-gyu Lee, Jin-hwan Kim, Jin-seung Choi
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Patent number: 6823099Abstract: An optical bench with improved structure, in which tolerance for misalignment of optical elements becomes great with shortened optical path, the optical bench including a substrate and input and output optical fibers arranged on the substrate with a predetermined separation gap therebetween, where far ends of the input and output optical fibers form a zigzag pattern to guide input and output beams. Input and output optical elements are arranged at the far end of each input and output optical fiber, respectively, condensing and/or diverging the input and output beams. Micro-mirrors receive the input beam from the input optical elements and reflecting the received input beam toward predetermined channels.Type: GrantFiled: October 31, 2001Date of Patent: November 23, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Jin-hwan Kim, Hyung Choi
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Publication number: 20040207775Abstract: An edge-light type backlight system including a point light source, a light guide panel including a light incident part into which light enters from the point light source and a light emitting surface from which light is emitted, and an optical path-changing unit which changes a propagation path of light traveling inside the light guide panel. The light incident part includes a light incident surface on which a prism pattern is formed, the light incident surface facing the point light source, and first and second surfaces extending from the light incident surface in a direction in which light travels inside the light guide panel and adapted to reflect light passing through the light incident surface to reduce a direction angle, the first and second surfaces being opposite to each other with respect to an optical axis.Type: ApplicationFiled: April 15, 2004Publication date: October 21, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jee-Hong Min, Hwan-Young Choi, Moon-Gyu Lee, Jin-Hwan Kim, Jin-Seung Choi
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Publication number: 20040170011Abstract: A backlight unit is provided including a light guide panel (LGP), a point light source emitting light at an edge of the LGP; and a refraction member being positioned between the point light source and the LGP and refracting the light emitted from the point light source toward the optical axis of the point light source in order to reduce the azimuth angle of the light that is incident upon the LGP. The refraction member includes a prism array in which a V-shaped prism pattern is repeatedly arrayed, the apex of the prism pattern facing the edge of the LGP, and a transparent portion that prevents the light from being totally reflected by the prism pattern in a region along an optical axis of the light source.Type: ApplicationFiled: November 4, 2003Publication date: September 2, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin-hwan Kim, Hwan-young Choi, Moon-gyu Lee, Su-mi Lee, Jin-seung Choi, Jee-hong Min
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Publication number: 20040135942Abstract: A liquid crystal display device for displaying an image by changing orientation of a liquid crystal layer sealed between two substrates includes a lower substrate having a microstructure which outputs light incident on a side surface of the lower substrate to an upper surface of the lower substrate, a light source emitting light to the side surface of the lower substrate, a selective reflection panel provided on the upper surface of the lower substrate to reflect light having a predetermined incident angle or more and transmit the remaining light, and a reflection panel provided under the lower substrate.Type: ApplicationFiled: July 23, 2003Publication date: July 15, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Moon-Gyu Lee, Hwan-Young Choi, Jin-Seung Choi, Jee-Hong Min, Jin-Hwan Kim
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Publication number: 20040130880Abstract: A backlight unit includes a light guide panel where a holographic pattern is formed. A point light source emits light to an edge of the light guide panel. A refractive member is provided between the point light source and the light guide panel and reduces an azimuth angle of light incident on the light guide panel. The refractive member includes, from an optical axis of the point light source, a light transmission zone transmitting light as it is, a blaze zone where a blaze pattern having a saw-toothed shape in which one surface near the optical axis and substantially parallel to the optical axis is formed, and a prism zone where a triangular prism pattern is formed. The backlight unit may further include a diffusive member diffusing light emitted from the point light source to be incident on the refractive member.Type: ApplicationFiled: June 5, 2003Publication date: July 8, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jee-hong Min, Hwan-young Choi, Moon-gyu Lee, Su-mi Lee, Jin-hwan Kim, Jin-seung Choi
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Publication number: 20040130879Abstract: A backlight unit includes a point light source emitting light and a light guide panel including a holographic pattern formed to have a concentric circle shape having a center at the point light center. Thus, since the incident azimuth angle of light incident on the holographic pattern can be made constant, an efficiency of light exhausted through the light exhaust surface can be improved. Also, since the distribution of the exhaust azimuth angle of the exhaust light can be made uniform, a uniform brightness can be obtained from the exhaust surface.Type: ApplicationFiled: June 3, 2003Publication date: July 8, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin-Seung Choi, Hwan-Young Choi, Jee-Hong Min, Su-Mi Lee, Jin-Hwan Kim, Moon-Gyu Lee
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Publication number: 20040126188Abstract: Disclosed is a lid for covering a ditch or a drain, having a blocking valve to prevent back flow of sewage and malodor. A bearing of a valve having a weight is assembled with a frame, a portion for preventing the malfunction of the valve is formed, and a cover for protecting the bearing of the valve is assembled with the frame. Thus, the ditch or the drain is covered to provide an agreeable and sanitary environment. Further, the inflow of a light but voluminous garbage can be prevented, so it is easy to clean with low costs and provides a good look at the drain and the ditch.Type: ApplicationFiled: September 19, 2003Publication date: July 1, 2004Inventor: Jin-Hwan Kim
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Publication number: 20030235047Abstract: An illumination apparatus for planar display devices, including an optical element for making light travel parallel to an optical axis, is provided. The illumination apparatus includes a dot light source for radiating light, and a light guide plate having the optical element. The optical element is composed of a first refraction facet, which is adjacent to the dot light source and increases the emission angle of the light, and a second refraction facet, which is isolated a predetermined distance from the first refraction facet while facing the first refraction facet and reduces the emission angle of the light. In this structure, the light travels parallel to the optical axis In the illumination apparatus, the emission angle of incident light is reduced, preferably, the light travels parallel to the optical axis.Type: ApplicationFiled: September 30, 2002Publication date: December 25, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin-Seung Choi, Hwan-Young Choi, Jee-hong Min, Su-mi Lee, Jin-hwan Kim, Moon-gyu Lee
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Patent number: 6530784Abstract: A display connection structure of an electronic appliance is disclosed. The display connection structure includes a main body; a display for receiving an image signal from the main body and displaying an image; a connection unit including hinge pins rotatably installed at the main body, and housing provided at the display so as to be connected to the hinge pins and to pivot together with the hinge pins for detachably connecting the display to the main body; and an optical connector having portions provided at the main body and the display to correspond to each other for transmitting an image signal by light.Type: GrantFiled: September 14, 2000Date of Patent: March 11, 2003Assignee: Samsung Electronics Co., Ltd.Inventors: Hong-kyun Yim, Heui-jong Kang, Jong-kuk Mun, Jin-hwan Kim
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Publication number: 20030021888Abstract: A method of manufacturing an optical disc includes easily removing a bump formed on a circumference of the optical disc during forming a transparent layer by using a spin-coating method to form the optical disk having a high-density recording capacity. The method includes preparing a substrate having a diameter larger than that of a desired disc, applying an ultraviolet hardening resin to the substrate and forming a transparent layer having a predetermined thickness by a spin-coating method, illuminating an ultraviolet ray on the transparent layer and a bump formed on a circumference of the transparent layer to be hardened, and cutting out the bump by using a puncher. According to the method, the bump which inevitably occurs when the transparent layer is formed, can be easily cut out by a puncher.Type: ApplicationFiled: July 5, 2002Publication date: January 30, 2003Applicant: Samsung Electronics Co. Ltd.Inventors: Do-hoon Chang, Jin-hwan Kim, Myong-do Ro, Du-seop Yoon
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Patent number: 6470116Abstract: A bidirectional signal transmission device using light which adopts a photodiode-incorporated vertical cavity surface emitting laser (VCSEL) as light devices so that signal transmission and reception between facing light devices is achieved via the same channel, is provided. This bidirectional signal transmission device includes first and second light devices having a VCSEL part and a photodiode part incorporated with the VCSEL part, at least one optical fiber installed between the first and second light devices, and diffraction elements installed between the first light device and the input/output port of the optical fiber and between the second light device and the output port of the optical fiber, respectively, for selectively diffracting incident light so that light output from the optical fiber is received by the photodiode part, so that a received light signal having a high S/N ratio can be detected.Type: GrantFiled: April 18, 2001Date of Patent: October 22, 2002Assignee: Samsung Electronics Co., Ltd.Inventors: Jin-hwan Kim, Jong-kuk Mun, Woong-lin Hwang
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Publication number: 20020126950Abstract: An optical bench with improved structure, in which tolerance for misalignment of optical elements becomes great with shortened optical path, the optical bench including a substrate and input and output optical fibers arranged on the substrate with a predetermined separation gap therebetween, where far ends of the input and output optical fibers form a zigzag pattern to guide input and output beams. Input and output optical elements are arranged at the far end of each input and output optical fiber, respectively, condensing and/or diverging the input and output beams. Micro-mirrors receive the input beam from the input optical elements and reflecting the received input beam toward predetermined channels.Type: ApplicationFiled: October 31, 2001Publication date: September 12, 2002Applicant: Samsung Electronics Co., Ltd.Inventors: Jin-hwan Kim, Hyung Choi
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Publication number: 20020006251Abstract: A bidirectional signal transmission device using light which adopts a photodiode-incorporated vertical cavity surface emitting laser (VCSEL) as light devices so that signal transmission and reception between facing light devices is achieved via the same channel, is provided. This bidirectional signal transmission device includes first and second light devices having a VCSEL part and a photodiode part incorporated with the VCSEL part, at least one optical fiber installed between the first and second light devices, and diffraction elements installed between the first light device and the input/output port of the optical fiber and between the second light device and the output port of the optical fiber, respectively, for selectively diffracting incident light so that light output from the optical fiber is received by the photodiode part, so that a received light signal having a high S/N ratio can be detected.Type: ApplicationFiled: April 18, 2001Publication date: January 17, 2002Inventors: Jin-hwan Kim, Jong-kuk Mun, Woong-lin Hwang