公开(公告)号：US11741868B2

公开(公告)日：2023-08-29

申请号：US17963801

申请日：2022-10-11

Applicant: Samsung Display Co., Ltd.

Inventor： Hyungrae Nam ,  Jin-Taek Hong

IPC: G09G3/36 ,  G09G3/00 ,  G09G3/32

CPC classification number: G09G3/006 ,  G09G3/32 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0276 ,  G09G2330/028

Abstract: Provided is a display device which comprises a display panel including a plurality of pixels displaying an image based on a driving voltage, a reference voltage generator converting a sensing driving voltage generated by measuring the driving voltage into a sensing driving current, converting a preset reference driving voltage into a reference driving current, comparing the sensing driving current and the reference driving current, and generating a first reference voltage and a second reference voltage based on a difference between the sensing driving current and the reference driving current, a gamma voltage generator generating a plurality of gamma voltages by dividing the first reference voltage and the second reference voltage, and a data driver converting image data into a data voltage based on the gamma voltages and providing the data voltage to each of the pixels.

公开(公告)号：US11978376B2

公开(公告)日：2024-05-07

申请号：US17993966

申请日：2022-11-24

Applicant: Samsung Display Co., Ltd.

Inventor： Jin-Taek Hong ,  Sungchun Park

IPC: G09G3/20 ,  H02H1/00 ,  H02H7/12 ,  H02M1/00 ,  H02M3/158

CPC classification number: G09G3/20 ,  H02H1/0007 ,  H02H7/12 ,  H02M1/0009 ,  H02M3/158 ,  G09G2330/021 ,  G09G2330/04

Abstract: A power management circuit is disclosed that includes a boost converter, a pass transistor, and an overcurrent detect circuit. The boost converter is configured to convert an input voltage into a first power supply voltage. The pass transistor is configured to transfer the first power supply voltage as a second power supply voltage after a predetermined time from a time point at which the first power supply voltage is activated. The overcurrent detect circuit is configured to perform an overcurrent detect operation by sensing a current flowing through the pass transistor. A display device is also disclosed that includes the power management circuit.

公开(公告)号：US09412313B2

公开(公告)日：2016-08-09

申请号：US14531230

申请日：2014-11-03

Applicant: Samsung Display Co., Ltd.

Inventor： Won Sik Oh ,  Jin-Taek Hong

IPC: G09G3/34 ,  G09G3/36 ,  H04N13/04 ,  G09G3/00

CPC classification number: G09G3/342 ,  G09G3/003 ,  G09G3/3611 ,  G09G2310/08 ,  H04N13/341 ,  H04N13/398

Abstract: A display apparatus includes a display panel including n×m array of pixels and which sequentially drives the pixels from pixels in a first row to pixels in an n-th row, a panel driving circuit which sequentially applies first, second, third or fourth image data to the display panel, a backlight unit including a first light source disposed adjacent to the pixels in the first row and a second light source disposed adjacent to the pixels in the n-th row, and a backlight control circuit which divides each of first and second time periods into first, second, third and fourth blinking time periods, and applies a control signal to the backlight unit, where the first time period corresponds to two frames during which the first and second image data are applied, and the second time period corresponds to two frames during which the third and fourth image data are applied.

Abstract translation: 显示装置包括：显示面板，包括n×m个像素阵列，并且将第一行中的像素依次驱动到第n行中的像素;面板驱动电路，顺序地施加第一，第二，第三或第四图像 向显示面板提供数据的背光单元，包括与第一行中的像素相邻设置的第一光源和与第n行中的像素相邻设置的第二光源的背光单元以及将第一行中的每一个分隔开的背光控制电路 和第二时间段分配到第一，第二，第三和第四闪烁时间段，并且将控制信号施加到背光单元，其中第一时间段对应于应用第一和第二图像数据的两个帧，第二时间 周期对应于应用第三和第四图像数据的两个帧。

公开(公告)号：US11030961B2

公开(公告)日：2021-06-08

申请号：US16221021

申请日：2018-12-14

Applicant: Samsung Display Co., Ltd.

Inventor： Jin-Taek Hong ,  Songyi Han

IPC: G09G3/34 ,  H02M3/06 ,  H02M1/088 ,  H02M3/156 ,  H02M1/00

Abstract: A DC to DC converter includes: an input voltage source; an inductor connected to the input voltage source; a diode connected to the inductor; a capacitor connected to the diode; a plurality of switching elements connected to a node between the inductor and the diode in a parallel connection; and a controller configured to set duty ratios of currents flowing through the switching elements such that the duty ratios of the currents flowing through the switching elements are equal to each other.