公开(公告)号：US09867256B2

公开(公告)日：2018-01-09

申请号：US15259603

申请日：2016-09-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung-han Lee ,  Kun-sok Kang ,  Chang-won Son ,  Sang-on Choi

IPC: H05B33/08 ,  G01R1/30 ,  G01R19/165 ,  G01R31/44

CPC classification number: H05B33/089 ,  G01R1/30 ,  G01R19/16576 ,  G01R31/44 ,  G06F3/1446 ,  G09G3/006 ,  G09G3/3208 ,  G09G2330/12 ,  G09G2360/145 ,  G09G2370/022 ,  H05B33/0842 ,  H05B33/0893

Abstract: Provided is a light-emitting diode (LED) driving system. The LED driving system includes an LED current controller, a detector, and a system controller. The LED current controller is configured to control a current flowing through a plurality of LED arrays including at least one LED, such that no current flows through a first LED array from among the plurality of the LED arrays and a current flows through a second LED array from among the plurality of the LED arrays. The detector is configured to detect a sensing voltage from the first LED array. The system controller is configured to determine, based on a comparison result between the sensing voltage and a reference voltage, a failure of the at least one LED included in the second LED array.

公开(公告)号：US09797999B2

公开(公告)日：2017-10-24

申请号：US14807453

申请日：2015-07-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung-han Lee ,  Kun-sok Kang ,  Byung-seok Soh ,  Chang-won Son ,  Sang-on Choi

IPC: G01S13/04 ,  G01S13/86 ,  G06F3/0482 ,  G09G3/36 ,  G09G3/20

CPC classification number: G01S13/04 ,  G01S13/86 ,  G06F1/3231 ,  G06F3/0482 ,  G09G3/20 ,  G09G2330/022 ,  G09G2354/00 ,  Y02D10/173

Abstract: A display apparatus with a radio frequency (RF) sensor and a user detection method using an RF sensor are provided. The display apparatus includes: a display panel configured to display an image; a support frame located in a back area of the display panel and configured to support parts of the display apparatus; and a radio frequency (RF) sensor configured to be arranged in the support frame for performing one of transmitting a radio frequency signal to a front area of the display panel and receiving the radio signal from the front area of the display panel, wherein the radio frequency signal which is transmitted or received passes through the display panel.