Invention Grant
- Patent Title: Backlight unit and a display apparatus having the same
- Patent Title (中): 背光单元和具有该背光单元的显示装置
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Application No.: US13734400Application Date: 2013-01-04
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Publication No.: US09288883B2Publication Date: 2016-03-15
- Inventor: Woojin Lee , Songyi Han , SeungYoung Choi
- Applicant: SAMSUNG DISPLAY CO., LTD.
- Applicant Address: KR Yonging, Gyeonggi-Do
- Assignee: SAMSUNG DISPLAY CO., LTD.
- Current Assignee: SAMSUNG DISPLAY CO., LTD.
- Current Assignee Address: KR Yonging, Gyeonggi-Do
- Agency: F. Chau & Associates, LLC
- Priority: KR10-2012-0091489 20120821
- Main IPC: H05B33/08
- IPC: H05B33/08 ; H05B37/03 ; G06F3/038

Abstract:
A backlight unit includes a power converter which generates a light driving voltage in response to a voltage control signal with a first level, a plurality of light emitting strings, wherein each of the light emitting strings receives the light driving voltage through a first end thereof, and a controller which generates the voltage control signal. The controller is connected to a second end of at least one of the light emitting strings and detects a level of a signal at the connected second end to detect an operation state of the light emitting strings. The controller generates the voltage control signal with a second level to stop the power converter from generating the light driving voltage when the operation state of the light emitting strings is in an abnormal state.
Public/Granted literature
- US20140055439A1 BACKLIGHT UNIT AND A DISPLAY APPARATUS HAVING THE SAME Public/Granted day:2014-02-27
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