公开(公告)号：US20150116382A1

公开(公告)日：2015-04-30

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: H05B33/08 ,  G09G3/36 ,  G09G3/34

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.

Abstract translation: 灯单元包括DC / DC转换器。 多个单位发光二极管列接收从DC / DC转换器施加的电压。 多个晶体管分别连接到多个单位发光二极管列。 电流偏差补偿单元通过脉冲电流宽度调制平均电流控制方法来补偿分别流过多个单位发光二极管列的电流之间的偏差。 连接开关顺序地将电流偏差补偿单元与多个晶体管连接。 电阻器连接到多个晶体管的输出端子。 开关控制器基于施加到电阻器的信号来控制连接开关和电流偏差补偿单元之间的连接。

公开(公告)号：US20160195769A1

公开(公告)日：2016-07-07

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: G02F1/1335 ,  F21V8/00

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.

Abstract translation: 背光单元可以包括壁和多个光源。 壁可以在背光单元的横截面视图中具有一侧。 侧面可以在背光单元的横截面视图中具有弯曲的形状。 多个光源可以包括第一光源和第二光源。 在背光单元的横截面视图中，第二光源可以比第一光源更远离壁的中心部分。 在背光单元的截面图中，第二光源与侧面之间的最小距离可以大于第一光源与侧面之间的最小距离。