Jaechang
Jaechang Choi, Yongin-Si KR
Patent application number | Description | Published |
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20130077343 | BACKLIGHT UNIT AND DISPLAY APPARATUS HAVING THE SAME - A backlight unit includes a light source unit emitting a light, a light guide plate guiding the light, and a lower cover accommodating the light guide plate and the light source unit, and a deformation preventing member disposed at two first corners among four corners of the lower cover in a plan view, to prevent the light guide plate from being deformed. The two first corners are spaced apart from the light source unit and remaining two second corners of the four corners are adjacent to the light source unit. | 03-28-2013 |
Jaechang Ha, Daegu KR
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20150152896 | THREE-STAGE HYDRAULIC ACTUATOR AND METHOD OF OPERATING THE SAME - Disclosed herein is a three-stage hydraulic actuator. The three-stage hydraulic actuator includes a pressurizing chamber, a distribution chamber and an acceleration chamber. The pressurizing chamber has therein separated spaces respectively charged with compressed gas and compressed oil. The distribution chamber is provided to communicate with the pressurizing chamber and is charged with oil pressurized by the compressed oil charged into the pressurizing chamber. The acceleration chamber communicates with the distribution chamber through a distributing orifice. An acceleration piston is installed in the acceleration chamber and is moved forward when the pressurized oil is supplied from the distribution chamber to the acceleration chamber. | 06-04-2015 |
Jaechang Kim, Dongnae-Gu KR
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20120062527 | DISPLAY OPERABLE IN BOTH REFLECTIVE AND TRANSMISSIVE MODES - A display apparatus includes a first display panel with a plurality of first pixels, a second display panel facing the first display panel and having a plurality of second pixels, a light reflective polarizer, and a backlight unit. The light reflective polarizer is interposed between the first and second display panels to transmit light polarized in a first direction, and reflect light polarized in a second direction substantially perpendicular to the first direction. The backlight unit is arranged proximate to the second display panel to supply light to the first and second display panels. The first display panel displays an image by using reflected ambient light, and the second display panel displays an image by using light from the backlight unit. | 03-15-2012 |
Jaechang Lee, Geoje KR
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20140341734 | THRUSTER SYSTEM AND VESSEL INCLUDING THE SAME - Disclosed are a thruster system and a vessel including the same. The thruster system according to an exemplary embodiment of the present invention includes: a canister on which a thruster is installed, and which is movable upward and downward in a hull; a wire controller which controls a wire connected with the canister and enables the upward and downward movement of the canister; and a ballast tank which is installed in the canister and filled with water in order to offset the buoyancy that is applied to the canister. | 11-20-2014 |
Jaechang Shim, Gyeongsangbuk-Do KR
Patent application number | Description | Published |
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20130265414 | VEHICLE CRASH PREVENTION APPARATUS AND METHOD - The present invention relates to a vehicle accident prevention apparatus comprising a camera unit which photographs an image of a front view, an image recognition unit which processes the image of the front view to detect the registration number of a vehicle driving in front of the vehicle from a license plate of the vehicle driving in front of the vehicle, a wireless communication unit which receives accident prevention information containing an identifier and speed of the vehicle driving in front of the vehicle, a speed sensing unit which senses the speed of the vehicle equipped with the apparatus of the present invention, and a determining and control unit which identifies the vehicle driving in front of the vehicle by matching the registration number and the identifier of the vehicle driving in front of the vehicle, and generates a control signal for preventing vehicle accident by performing a speed comparison. | 10-10-2013 |