公开(公告)号：US20210118391A1

公开(公告)日：2021-04-22

申请号：US16857106

申请日：2020-04-23

Applicant: Samsung Display Co., Ltd.

Inventor： Gwangsoo AHN ,  Dae-Sik LEE ,  Jong Jae LEE

IPC: G09G3/36

Abstract: A power management circuit of a display device includes a voltage information storage comprising a first and second bank storing first and second voltage information corresponding to first and second voltage levels different from each other, a bank select pin receiving a bank select signal, a voltage information selecting circuit selectively outputting the first voltage information stored in the first bank or the second voltage information stored in the second bank in response to the bank select signal received through the bank select pin, and a DC-DC converter generating panel driving voltages having the first voltage levels based on the first voltage information when the first voltage information is output from the voltage information selecting circuit, and generating the panel driving voltages having the second voltage levels based on the second voltage information when the second voltage information is output from the voltage information selecting circuit.

公开(公告)号：US20160267833A1

公开(公告)日：2016-09-15

申请号：US14849462

申请日：2015-09-09

Applicant: Samsung Display Co., Ltd.

Inventor： Dae-Sik LEE ,  Won-Hyoung KANG

IPC: G09G3/20 ,  H05B33/08

CPC classification number: H05B33/0803 ,  G09G3/3406 ,  G09G2330/028 ,  G09G2330/12 ,  H05B33/086

Abstract: A backlight unit includes: a power converter to generate a light-source power voltage according to a voltage control signal; an LED string connected to the light-source power voltage; a short-circuit detector to receive the light-source power voltage and to enable a short-circuit signal; and a light source controller to generate the voltage control signal to interrupt generation of the light-source power voltage when the short-circuit signal is enabled. The short-circuit detector includes: a voltage divider to divide the light-source power voltage to output a detection voltage; and a comparing circuit to generate a reference voltage corresponding to a voltage level of the detection voltage, to compare the reference voltage with the detection voltage, and to enable the short-circuit signal in accordance with a result of the comparison.

Abstract translation: 背光单元包括：功率转换器，用于根据电压控制信号产生光源电源电压; 连接到光源电源电压的LED串; 短路检测器，用于接收光源电源电压并实现短路信号; 以及光源控制器，用于在短路信号使能时产生电压控制信号以中断产生光源电力电压。 短路检测器包括：分压器，用于分配光源电源电压以输出检测电压; 以及比较电路，用于产生与检测电压的电压电平相对应的参考电压，以将参考电压与检测电压进行比较，并根据比较结果启用短路信号。

公开(公告)号：US20150131016A1

公开(公告)日：2015-05-14

申请号：US14252515

申请日：2014-04-14

Applicant: Samsung Display Co., Ltd.

Inventor： Seung-Wan KIM ,  Dae-Sik LEE ,  Jin-Won JANG

IPC: H05B33/08 ,  G02F1/1335

CPC classification number: H05B33/0815 ,  G02F1/133603 ,  G02F2001/133612 ,  G09G3/3406

Abstract: A backlight device includes an input line connected to an anode of a light source unit; an output line connected to a cathode of the light source unit; a resistance line connected between the output line and a ground and disposed in a pattern having a predetermined width and length to have a predetermined resistance; a sensing line connected to the output line; and a controller for measuring a balance voltage of the output line through the sensing line and controls an amount of current supplied to the input line based on the balance voltage, in which when a reference current is supplied to the input line, the balance voltage of the output line becomes a predetermined reference voltage due to the predetermined resistance.

Abstract translation: 背光装置包括连接到光源单元的阳极的输入线; 连接到所述光源单元的阴极的输出线; 连接在输出线和地之间的电阻线，并以具有预定电阻的预定宽度和长度的图案布置; 连接到输出线的感测线; 以及控制器，用于通过感测线测量输出线的平衡电压，并且基于平衡电压来控制提供给输入线的电流量，其中当参考电流被提供给输入线时，平衡电压 由于预定的电阻，输出线变为预定的参考电压。

公开(公告)号：US20210241704A1

公开(公告)日：2021-08-05

申请号：US17235105

申请日：2021-04-20

Applicant: Samsung Display Co., Ltd.

Inventor： Kihyun PYUN ,  Moonshik KANG ,  Dae-Sik LEE ,  Jun Pyo LEE ,  Min-Soo CHOI ,  Songyi HAN

IPC: G09G3/34 ,  H05B45/14

Abstract: A light source apparatus includes a plurality of light source gate lines extending in a first direction, a plurality of light source data lines extending in a second direction crossing the first direction, a plurality of light source emission lines, a plurality of feedback lines and a plurality of light source blocks. At least one of the light source blocks is connected to the light source gate line, the light source data line, the light source emission line and the feedback line.

公开(公告)号：US20210183289A1

公开(公告)日：2021-06-17

申请号：US17023806

申请日：2020-09-17

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Oh KANG ,  Dae-Sik LEE ,  Ji Youn SEO ,  Jong Jae LEE

IPC: G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a controller which generates a gate reference signal, a gate control circuit which outputs a gate driving signal based on the gate reference signal, and a gate driving circuit which provides gate signals to the plurality of pixels based on the gate driving signal. The gate control circuit includes a protection enable circuit which detects a first period of the gate reference signal, determines whether the period of the gate reference signal is changed, and generates a protection enable signal when the first period of the gate reference signal is not changed, and an over-current protection circuit which generates an over-current occurrence signal by detecting an over-current of the gate driving signal, and stops outputting the gate driving signal based on the over-current occurrence signal and the protection enable signal.

公开(公告)号：US20210166616A1

公开(公告)日：2021-06-03

申请号：US16898439

申请日：2020-06-11

Applicant: Samsung Display Co., Ltd.

Inventor： Sang Hyun LEE ,  Si Duk SUNG ,  Dae-Sik LEE

IPC: G09G3/32

Abstract: The current disclosure relates to a display device including a display panel including a plurality of pixels, and a plurality of gate lines and a plurality of data lines connected to the plurality of pixels, a gate driver applying a gate signal to the plurality of gate lines, a data driver applying a data signal to the plurality of data lines, and a voltage provider configured to generate a gate-on voltage that is gradually changed in one frame and a kickback voltage that is gradually changed in one frame to transmit the gate-on voltage and the kickback voltage to the gate driver.

公开(公告)号：US20190355307A1

公开(公告)日：2019-11-21

申请号：US16404518

申请日：2019-05-06

Applicant: Samsung Display Co., Ltd.

Inventor： Yanguk NAM ,  Dae-Sik LEE

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

Abstract: A display device includes a display panel including a plurality of pixels, a data driver configured to provide a data signal to the pixels, a scan driver configured to provide a scan signal to the pixels, a power controller configured to provide a driving voltage to the data driver and the scan driver, and a timing controller configured to generate a data control signal that controls the data driver, a scan control signal that controls the scan driver, and a power control signal that controls the power controller based on an image data and a control signal. The power controller determines a transient time that changes the driving voltage from a first voltage level to a second voltage level based on the power control signal.

公开(公告)号：US20190318705A1

公开(公告)日：2019-10-17

申请号：US16376922

申请日：2019-04-05

Applicant: Samsung Display Co., Ltd.

Inventor： Dae-Sik LEE ,  Yanguk NAM ,  Songyi HAN

IPC: G09G5/00

Abstract: A power voltage generating circuit includes an input capacitor including a first end connected to an input node, and a second end connected to a ground, an inductor, an input switching element connected between the input node and a first end of the inductor, a control switching element including a control electrode connected to a switching controller configured to apply a switching control signal, an input electrode connected to a resistor, and an output electrode connected to a second end of the inductor, a diode including a first electrode connected to the second end of the inductor, and a second electrode connected to an output node, and an output capacitor connected between the output node and the ground, wherein the input switching element is configured to be turned off when a short circuit of a load connected to the output node is detected in a monitoring period.

公开(公告)号：US20160081144A1

公开(公告)日：2016-03-17

申请号：US14676469

申请日：2015-04-01

Applicant: Samsung Display Co., Ltd.

Inventor： Dae-Sik LEE ,  Jin-Won JANG ,  SeungYoung CHOI

IPC: H05B33/08 ,  G09G5/10

CPC classification number: H05B33/083 ,  G09G3/342 ,  G09G5/10 ,  G09G2300/0426 ,  G09G2320/0285 ,  G09G2320/0626 ,  G09G2330/025 ,  G09G2330/045 ,  H05B33/0827 ,  H05B33/089

Abstract: Provided is a display device. According to one embodiment, the display device includes: a backlight unit with a plurality of light emitting strings including at least one light emitting diode; and a display panel displaying an image using light outputted from the backlight unit, wherein the backlight unit includes: a light source unit including the plurality of light emitting strings and a plurality of photo transistors controlling the plurality of light emitting strings; a DC-DC converter outputting the driving voltage to the light source unit; and a driving control unit applying activated gate voltages to turn on the plurality of photo transistors and detecting driving time differences between an output time for outputting the driving voltage and applying times for applying the gate voltages.

Abstract translation: 提供了一种显示装置。 根据一个实施例，显示装置包括：具有包括至少一个发光二极管的多个发光串的背光单元; 以及显示面板，使用从所述背光单元输出的光显示图像，其中，所述背光单元包括：包括所述多个发光串的光源单元和控制所述多个发光串的多个光电晶体管; 将驱动电压输出到所述光源单元的DC-DC转换器; 以及驱动控制单元，施加激活的栅极电压以接通多个光电晶体管，并且检测用于输出驱动电压的输出时间和施加栅极电压的施加时间之间的驱动时间差。

公开(公告)号：US20230154420A1

公开(公告)日：2023-05-18

申请号：US18149443

申请日：2023-01-03

Applicant: Samsung Display Co., Ltd.

Inventor： Kihyun PYUN ,  Moonshik KANG ,  Dae-Sik LEE ,  Jun Pyo LEE ,  Min-Soo CHOI ,  Songyi HAN

IPC: G09G3/34 ,  H05B45/14

CPC classification number: G09G3/3406 ,  H05B45/14 ,  G09G2330/023 ,  G09G2360/145

Abstract: A light source apparatus includes a plurality of light source gate lines extending in a first direction, a plurality of light source data lines extending in a second direction crossing the first direction, a plurality of light source emission lines, a plurality of feedback lines and a plurality of light source blocks. At least one of the light source blocks is connected to the light source gate line, the light source data line, the light source emission line and the feedback line.