公开(公告)号：US09720279B2

公开(公告)日：2017-08-01

申请号：US14698686

申请日：2015-04-28

Applicant: Samsung Display Co., Ltd.

Inventor： Seung Wan Kim ,  Young Sup Kwon ,  Jae Kyu Park ,  Eun Chul Shin

IPC: G02F1/1333 ,  G02F1/1335

CPC classification number: G02F1/133608 ,  G02F1/133603

Abstract: A backlight unit may include a wall and a plurality of light sources. The wall may have a side in a cross-sectional view of the backlight unit. The side may have a curved shape in the cross-sectional view of the backlight unit. The plurality light sources may include a first light source and a second light source. The second light source may be positioned farther away from a center portion of the wall than the first light source in the cross-sectional view of the backlight unit. A minimum distance between the second light source and the side may be greater than a minimum distance between the first light source and the side in the cross-sectional view of the backlight unit.

公开(公告)号：US09830869B2

公开(公告)日：2017-11-28

申请号：US14524535

申请日：2014-10-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Tae Gon Im ,  Song Yi Han ,  Young Sup Kwon ,  Eun Chul Shin

IPC: G09G3/36 ,  G09G3/34 ,  H05B33/08

CPC classification number: G09G3/3607 ,  G09G3/3406 ,  G09G2300/0809 ,  G09G2310/027 ,  G09G2320/0626 ,  H05B33/086

Abstract: A light unit includes a DC/DC converter. A plurality of unit light emitting diode columns receive a voltage applied from the DC/DC converter. A plurality of transistors, respectively, are connected to the plurality of unit light emitting diode columns. A current deviation compensating unit compensates for deviations between currents respectively flowing through the plurality of unit light emitting diode columns by a pulse current width modulation average current control method. A connection switch sequentially connects the current deviation compensating unit with the plurality of transistors. A resistor is connected to output terminals of the plurality of transistors. A switch controller controls connection between the connection switch and the current deviation compensating unit based on a signal applied to the resistor.