Patents by Inventor Hwan-Jun Sung
Hwan-Jun Sung 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: 9594202Abstract: A backlight device for use in a display device includes a light source device and a light diffusion member. The light source device includes a plurality of light sources. The light diffusion member includes a light transmission body and reflectors. The light transmission body includes a light receiving surface facing a first one of the light sources for receiving the light emitted from the first light source and a light output surface facing away from the light receiving surface for outputting the light transmitted through the light transmission body. The reflectors are attached to the light transmission body and include first and second reflection surfaces oriented such that the light received from the first light source through the light receiving surface is reflected by the first and second reflection surfaces while the light passes through the light transmission body toward the light output surface.Type: GrantFiled: July 25, 2014Date of Patent: March 14, 2017Assignee: Samsung Display Co., Ltd.Inventors: Chan Jae Park, Seung Hwan Baek, Hwan Jun Sung
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Publication number: 20150285981Abstract: A backlight device for use in a display device includes a light source device and a light diffusion member. The light source device includes a plurality of light sources. The light diffusion member includes a light transmission body and reflectors. The light transmission body includes a light receiving surface facing a first one of the light sources for receiving the light emitted from the first light source and a light output surface facing away from the light receiving surface for outputting the light transmitted through the light transmission body. The reflectors are attached to the light transmission body and include first and second reflection surfaces oriented such that the light received from the first light source through the light receiving surface is reflected by the first and second reflection surfaces while the light passes through the light transmission body toward the light output surface.Type: ApplicationFiled: July 25, 2014Publication date: October 8, 2015Inventors: Chan Jae Park, Seung Hwan Baek, Hwan Jun Sung
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Patent number: 8736540Abstract: A liquid crystal display (LCD) includes: a gate-off voltage generator including a temperature compensation unit which comprises a constant voltage output device and which outputs a gate-off voltage having a level which varies based on a change in ambient temperature; a clock generator outputting a first clock signal and a second clock signal; a gate driver outputting gate signals; and a plurality of pixels which turn on or off based on the gate signals, wherein the constant voltage output device outputs a temperature variable voltage having a value based on a voltage difference between a reference terminal of the constant voltage output device and an input terminal of the constant voltage output device, and a voltage difference between the reference terminal and the input terminal of the constant voltage output device varies based on the change in the ambient temperature.Type: GrantFiled: September 10, 2012Date of Patent: May 27, 2014Assignee: Samsung Display Co., Ltd.Inventors: Eun-Woo Jeong, Sang-Hoon Park, Hwan-Jun Sung
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Publication number: 20130241912Abstract: A liquid crystal display (LCD) includes: a gate-off voltage generator including a temperature compensation unit which comprises a constant voltage output device and which outputs a gate-off voltage having a level which varies based on a change in ambient temperature; a clock generator outputting a first clock signal and a second clock signal; a gate driver outputting gate signals; and a plurality of pixels which turn on or off based on the gate signals, wherein the constant voltage output device outputs a temperature variable voltage having a value based on a voltage difference between a reference terminal of the constant voltage output device and an input terminal of the constant voltage output device, and a voltage difference between the reference terminal and the input terminal of the constant voltage output device varies based on the change in the ambient temperature.Type: ApplicationFiled: September 10, 2012Publication date: September 19, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Eun-Woo JEONG, Sang-Hoon PARK, Hwan-Jun SUNG
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Patent number: 8289256Abstract: A liquid crystal display (LCD) includes: a gate-off voltage generator including a temperature compensation unit which includes a constant voltage output device and a temperature-sensing device and outputting a gate-off voltage whose level varies according to a change in ambient temperature; a clock generator receiving a gate-on voltage and the gate-off voltage and outputting a first clock signal and a second clock signal; a gate driver receiving the first clock signal and the second clock signal and outputting gate signals; and a plurality of pixels turned on or off in response to the gate signals and thus displaying images, wherein the constant voltage output device outputs a constant voltage whose value is determined by a voltage difference between a reference terminal and an input terminal of the constant voltage output device, and the temperature-sensing device provides an input voltage whose value varies according to the change in the ambient temperature, wherein the voltage difference between the refereType: GrantFiled: August 27, 2009Date of Patent: October 16, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Eun-Woo Jeong, Sang-Hoon Park, Hwan-Jun Sung
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Publication number: 20100053054Abstract: A liquid crystal display (LCD) includes: a gate-off voltage generator including a temperature compensation unit which includes a constant voltage output device and a temperature-sensing device and outputting a gate-off voltage whose level varies according to a change in ambient temperature; a clock generator receiving a gate-on voltage and the gate-off voltage and outputting a first clock signal and a second clock signal; a gate driver receiving the first clock signal and the second clock signal and outputting gate signals; and a plurality of pixels turned on or off in response to the gate signals and thus displaying images, wherein the constant voltage output device outputs a constant voltage whose value is determined by a voltage difference between a reference terminal and an input terminal of the constant voltage output device, and the temperature-sensing device provides an input voltage whose value varies according to the change in the ambient temperature, wherein the voltage difference between the refereType: ApplicationFiled: August 27, 2009Publication date: March 4, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Eun-Woo JEONG, Sang-Hoon PARK, Hwan-Jun SUNG
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Publication number: 20090180048Abstract: The present invention relates to a receiving member which accommodates a display panel which displays an image. The receiving member includes an insulated body portion having a bottom plate and sidewalls to define a receiving space, and at least one ground metal portion provided at a region of the insulated body portion, the at least one ground metal portion formed integrally with the insulated body portion. Accordingly, the body portion of the receiving member is formed of an insulated material, thereby reducing the weight of the receiving member and improving heat radiation. Further, a local metal portion is provided in the receiving member, thereby improving electromagnetic interference (“EMI”) and electrostatic discharge performances of elements such as a control board.Type: ApplicationFiled: August 5, 2008Publication date: July 16, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun-Nam KIM, Yeun-Mo YEON, Hwan-Jun SUNG, Jin-Man YUN
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Publication number: 20080309597Abstract: The present invention is related to a driving apparatus for a liquid crystal display, and a liquid crystal display including the same. A gate-on voltage generator includes first and second resistors connected between a predetermined reference voltage and a ground voltage, a voltage follower connected to a contact between the first resistor and the second resistor, a charge pump circuit connected to an output terminal of the voltage follower, and a gate-on voltage output terminal connected to the charge pump circuit. The voltage follower is disposed in front of the charge pump circuit such that an influence due to load changes is blocked to thereby prevent an excessive increase of the gate-on voltage during a blank time. Furthermore, two resistors having the same resistance are used to divide the reference voltage such that stress on the resistors may be minimized.Type: ApplicationFiled: February 29, 2008Publication date: December 18, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun-Woo Nam, Hwan-Jun SUNG, Myoung-Ha Jeon, Hyeok-Tae Kwon, Hyo-Hyun Park