公开(公告)号：US10950197B2

公开(公告)日：2021-03-16

申请号：US16569562

申请日：2019-09-12

Applicant: Samsung Display Co., Ltd.

Inventor： Kihyun Pyun ,  Keunoh Kang ,  Moonshik Kang ,  Gwangsoo Ahn ,  Dae-sik Lee

IPC: G09G5/00 ,  G06F1/08

Abstract: A data driver of a display device includes an equalizer and an equalizer controller. The equalizer controller calculates a lock time during a training enable signal is in an active state while sequentially changing a set signal applied to the equalizer to one option code selected from among a plurality of option codes and provides an option code corresponding to a set lock time among the option codes to the equalizer as the set signal.

公开(公告)号：US20140340381A1

公开(公告)日：2014-11-20

申请号：US14065256

申请日：2013-10-28

Applicant: Samsung Display Co., Ltd.

Inventor： Yun-Tae Kim ,  Keunoh Kang ,  Jae-Hyeon Kwon ,  Minji Kim ,  Chaewoo Chung ,  Jung-Mok Han

IPC: G09G3/36

CPC classification number: G09G3/3677 ,  G09G3/3655 ,  G09G2310/06 ,  G09G2320/0219

Abstract: A display apparatus is disclosed. In one aspect, the apparatus includes a display panel including pixels connected to gate lines and data lines, a gate driver driving the gate lines, a data driver driving the data lines, and a control circuit controlling the gate driver and the data driver to display an image on the display panel. The control circuit applies a common voltage to the display panel. The control circuit compares the common voltage applied to the display panel and a feedback common voltage fedback from the display panel and applies a gate-on voltage having a voltage level corresponding to the compared result to the gate driver.

Abstract translation: 公开了一种显示装置。 在一个方面，该装置包括显示面板，包括连接到栅极线和数据线的像素，驱动栅极线的栅极驱动器，驱动数据线的数据驱动器，以及控制栅极驱动器和数据驱动器显示的控制电路 显示面板上的图像。 控制电路向显示面板施加公共电压。 控制电路将施加到显示面板的公共电压和从显示面板反馈的反馈公共电压进行比较，将与比较结果相对应的电压电平的栅极导通电压施加到栅极驱动器。

公开(公告)号：US11482152B2

公开(公告)日：2022-10-25

申请号：US16728756

申请日：2019-12-27

Applicant: Samsung Display Co., Ltd.

Inventor： Gwangsoo Ahn ,  Keunoh Kang ,  Kihyun Pyun ,  Moonshik Kang

IPC: G09G3/20

Abstract: A display system includes a source device and a sink device. The source device generates red-color display data, green-color display data, and blue-color display data and transmits first packet data including the red-color display data and a red-color display reference gamma-set, second packet data including the green-color display data and a green-color display reference gamma-set, and third packet data including the blue-color display data and a blue-color display reference gamma-set. The sink device converts the red-color display data, the green-color display data, and the blue-color display data into red-color display data-voltages, green-color display data-voltages, and blue-color display data-voltages and displays an image using the red-color display data-voltages, the green-color display data-voltages, and the blue-color display data-voltages. The sink device generates red-color display gamma-voltages, green-color display gamma-voltages, and blue-color display gamma-voltages based on the red-color display reference gamma-set, the green-color display reference gamma-set, and the blue-color display reference gamma-set, respectively.

公开(公告)号：US10825398B2

公开(公告)日：2020-11-03

申请号：US16571487

申请日：2019-09-16

Applicant: Samsung Display Co., Ltd.

Inventor： Keunoh Kang ,  Dae-Sik Lee ,  Kihyun Pyun ,  Song Yi Han

IPC: G06F3/046 ,  G09G3/3266 ,  G09G3/3225 ,  G09G3/36 ,  G09G3/3275

Abstract: A display device includes a display panel including scan lines, data lines, and a plurality of pixels coupled to the scan lines and the data lines, a voltage generator configured to generate an on-voltage and an off-voltage, a scan controller configured to generate a scan start signal based on the on-voltage, the off-voltage, and a vertical start signal, and a scan driver configured to generate a scan signal based on the scan start signal and to provide the scan signal to a scan line of the scan lines. The scan controller is configured to detect a voltage level of the scan start signal and to output a shutdown signal based on the voltage level of the scan start signal during an over current detecting period.

公开(公告)号：US11862097B2

公开(公告)日：2024-01-02

申请号：US18087902

申请日：2022-12-23

Applicant: Samsung Display Co., Ltd.

Inventor： Sanghyun Lee ,  Dae-Sik Lee ,  Keunoh Kang ,  Siduk Sung ,  Songyi Han

IPC: G09G3/3258 ,  G09G3/00

CPC classification number: G09G3/3258 ,  G09G3/006 ,  G09G2330/021 ,  G09G2330/04 ,  G09G2330/045 ,  G09G2330/12

Abstract: A display device includes a display panel including a pixel circuit, a display panel driving circuit that drives the display panel, a voltage generating circuit that receives an input power supply voltage when the display device is powered on and generates display panel voltages and driving circuit voltages based on the input power supply voltage, and an over-current protecting circuit that monitors an over-current generated inside the display device and generates a shut-down request signal when the over-current is detected. The voltage generating circuit outputs an initialization voltage at a first time point corresponding to a time point at which the input power supply voltage is received. The display panel driving circuit outputs a scan clock signal at a second time point. The over-current protecting circuit performs a first over-current protecting operation in a power-on monitoring period set between the first time point and the second time point.

公开(公告)号：US11847951B2

公开(公告)日：2023-12-19

申请号：US17979028

申请日：2022-11-02

Applicant: Samsung Display Co., Ltd.

Inventor： Sanghyun Lee ,  Dae-Sik Lee ,  Keunoh Kang ,  Siduk Sung ,  Songyi Han

IPC: G09G3/20

CPC classification number: G09G3/2011 ,  G09G2310/027 ,  G09G2320/0276 ,  G09G2320/0673

Abstract: A gamma voltage generator within a display device includes a plurality of gamma generation circuits that respectively generate a plurality of gamma voltages. At least one gamma generation circuit includes an input circuit configured to receive a first reference voltage and a second reference voltage, a reference voltage select circuit configured to select a reference voltage among the first reference voltage and the second reference voltage by comparing a gamma voltage generated by the at least one gamma generation circuit with the first reference voltage and the second reference voltage, a digital-to-analog conversion circuit configured to generate an analog voltage corresponding to a gamma code based on the reference voltage selected by the reference voltage select circuit, and an output circuit configured to output the gamma voltage based on the analog voltage.

公开(公告)号：US11417262B2

公开(公告)日：2022-08-16

申请号：US16997642

申请日：2020-08-19

Applicant: Samsung Display Co., Ltd.

Inventor： Keunoh Kang ,  Yanguk Nam ,  Gwangsoo Ahn

IPC: G09G3/20 ,  G11C19/28

Abstract: A display device includes a display panel, a gate driving circuit including a plurality of stages, and a power supply circuit outputting a clock signal, a clock-bar signal, a first discharge voltage, and a second discharge voltage. Each of stages includes a charge part that charges a clock signal having a first high voltage to a charge node, an output part that charges the first high voltage to an output node in response to a first node voltage of the charge node and outputs a second node voltage of the output node to a gate signal, a first discharge part that discharges the second node voltage to a first discharge voltage in response to the clock-bar signal having a second high voltage, and a second discharge part that discharges the first node voltage to a second discharge voltage in response to the clock-bar signal having the second high voltage.

公开(公告)号：US11069304B2

公开(公告)日：2021-07-20

申请号：US16790525

申请日：2020-02-13

Applicant: Samsung Display Co., Ltd.

Inventor： Dae-Sik Lee ,  Yoongu Kim ,  Seung Young Choi ,  Keunoh Kang ,  Kihyun Pyun

IPC: G09G3/34 ,  G09G3/36

Abstract: A light source apparatus includes a light source and a light source driver. The light source includes a plurality of scan blocks. Each scan block includes a plurality of local dimming blocks. The light source driver includes a plurality of channels configured to output light source driving signals to the plurality of local dimming blocks. The light source driving signal includes a light source intensity value representing a light intensity of a local dimming block from among the plurality of local dimming blocks and a delay value representing a degree of a delay of the local dimming block. The delay value is determined by a scan delay value varied according to the plurality of scan blocks and a delay parameter.

公开(公告)号：US10923067B2

公开(公告)日：2021-02-16

申请号：US16216158

申请日：2018-12-11

Applicant: SAMSUNG DISPLAY CO, LTD.

Inventor： Sujin Lee ,  Kihyun Pyun ,  Keunoh Kang

IPC: G09G5/00 ,  G09G3/36 ,  G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a gate driver configured to provide gate signals to the plurality of pixels, a data driver configured to generate a first initialization completion signal, and to provide data signals to the plurality of pixels, and a controller configured to generate a second initialization completion signal in response the first initialization completion signal and a state signal, and to control the gate driver and the data driver in response to the second initialization completion signal. The first initialization completion signal is activated when an initialization operation of the data driver is completed, and the state signal is activated when an initialization operation of the controller is completed.

公开(公告)号：US11990068B2

公开(公告)日：2024-05-21

申请号：US18082071

申请日：2022-12-15

Applicant: Samsung Display Co., Ltd.

Inventor： Dae-Sik Lee ,  Keunoh Kang ,  Sanghyun Lee

IPC: G09G3/00 ,  G09G3/3208

CPC classification number: G09G3/006 ,  G09G3/3208 ,  G09G2330/02 ,  G09G2330/04 ,  G09G2330/12

Abstract: A display device includes: a display panel including a plurality of pixels, which displays an image; a first circuit board connected to the display panel and which provides a first signal to the display panel; a second circuit board, which provides a second signal to the first circuit board, and a connection board, which electrically connects the first circuit board to the second circuit board and includes a connection portion connected to the first circuit board and the second circuit board. The second circuit board includes a connection detection circuit, which detects a connection status of the connection portion and generates a detection signal.