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Found results for
patents
1.
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LED display apparatus having active devices and fabrication method thereof
Application Number |
13095295 |
Grant Number |
09111843 |
Status |
In Force |
Filing Date |
2011-04-27 |
First Publication Date |
2011-11-10 |
Grant Date |
2015-08-18 |
Owner |
SNU R&DB FOUNDATION (Japan)
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Inventor |
- Park, Byung-Gook
- Seo, Chang Su
- Yoo, Byung Doo
- Hong, Keun Kee
- Jee, Sang Yeop
- Jeong, Jae Min
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Abstract
An active matrix LED display apparatus and a fabrication method thereof are provided. The active matrix LED display apparatus enables to miniaturize pixel by a formation of wiring on bottom layer and an assembly of each block through each eutectic layer into each transistor block receptor and/or each LED block receptor formed according to each color element unit, and to be embodied with high luminance, low power consumption, high reliability and superior optical property by assembling a transistor block having high electron mobility. And the fabricating method of the present invention enables to make efficiently an AM-LED display apparatus at room temperature in a short time by using different shapes of receptor and block depending on the function of a transistor and/or on the color of an LED.
IPC Classes ?
- H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different main groups of groups , or in a single subclass of , , e.g. forming hybrid circuits
- H01L 23/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details of semiconductor or other solid state devices
- H01L 27/12 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
- H01L 33/20 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by the semiconductor bodies with a particular shape, e.g. curved or truncated substrate
- H01L 33/40 - Materials therefor
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2.
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Field emission cathode capable of amplifying electron beam and methods of controlling electron beam density
Application Number |
13030065 |
Grant Number |
08232716 |
Status |
In Force |
Filing Date |
2011-02-17 |
First Publication Date |
2011-06-16 |
Grant Date |
2012-07-31 |
Owner |
SNU R&DB Foundaton (Republic of Korea)
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Inventor |
- Kim, Yong Hyup
- Kim, Wal Jun
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Abstract
Field emission devices (FEDs) are provided. In one embodiment, an FED includes an electron emitter, a tube spaced apart from the electron emitter and having a first opening and a second opening, and a gate electrode disposed on an outer surface of the tube. The first opening is disposed at one end of the tube adjacent to the electron emitter, and the second opening is disposed at the other end of the tube. The FED further includes an anode that is spaced apart from the second opening and collects secondary electrons emitted from the second opening.
IPC Classes ?
- H01J 1/62 - Luminescent screens; Selection of materials for luminescent coatings on vessels
- H01J 63/04 - Vessels provided with luminescent coatings; Selection of materials for the coatings
- H01J 23/34 - Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
- H01J 29/98 - Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
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3.
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Wireless communication method and apparatus using multiple antennas and multiple random beams
Application Number |
10836588 |
Grant Number |
07437182 |
Status |
In Force |
Filing Date |
2004-04-30 |
First Publication Date |
2005-08-18 |
Grant Date |
2008-10-14 |
Owner |
SNU R&DB FOUNDATION (Democratic People's Republic of Korea)
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Inventor |
- Lee, Yong-Hwan
- Hwang, Sung-Su
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Abstract
M,b] is determined to generate the b-th beam (b is an integer equal to or greater than 1 and equal to or less than B) corresponding to the b-th signal among B signals so as to determine the weight of output values respectively allocated to M antennas for the purpose of respectively generating B signals. The weight vector is determined so that respective elements thereof are determined to prevent interference between the different beams of B beams from exceeding a preset threshold. B signals are transmitted through B multiple channels obtained by generating B beams depending on the weights of elements.
IPC Classes ?
- H04M 1/00 - Substation equipment, e.g. for use by subscribers
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