公开(公告)号：US12057076B2

公开(公告)日：2024-08-06

申请号：US18086762

申请日：2022-12-22

Applicant: Samsung Display Co., Ltd.

Inventor： Dae-Sik Lee ,  Siduk Sung ,  Songyi Han

IPC: G09G3/30 ,  G09G3/3266

CPC classification number: G09G3/3266 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2330/02 ,  G09G2330/025 ,  G09G2330/04 ,  G09G2330/12

Abstract: A display device may include a timing controller which generates on-clock and off-clock signals, a level shifter which sequentially generates gate clock signals each having a rising edge and a falling edge respectively synchronized with a rising edge of the on-clock signal and a falling edge of the off-clock signal, the gate clock signals having a voltage corresponding to a gate driving voltage, a gate driver generating gate signals based on the gate clock signals, an over-current detector detecting an over-current by sensing a current of each of the gate clock signals at a time point when the falling edge of the on-clock signal is generated in an on-current detection mode, and generates a shutdown signal in response to the detected over-current, and a voltage generator providing the gate driving voltage to the level shifter and stops providing the gate driving voltage in response to the generated shutdown signal.

公开(公告)号：US11847981B2

公开(公告)日：2023-12-19

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.

公开(公告)号：US11170729B2

公开(公告)日：2021-11-09

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：US11170686B2

公开(公告)日：2021-11-09

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：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：US10154550B2

公开(公告)日：2018-12-11

申请号：US14849462

申请日：2015-09-09

Applicant: Samsung Display Co., Ltd.

Inventor： Dae-Sik Lee ,  Won-Hyoung Kang

IPC: H05B33/08 ,  G09G3/34

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.

公开(公告)号：US09572216B1

公开(公告)日：2017-02-14

申请号：US15004903

申请日：2016-01-23

Applicant: Samsung Display Co., LTD.

Inventor： Dae-Sik Lee ,  Tae-Gon Im ,  Jin-Won Jang

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

CPC classification number: H05B33/0845 ,  G09G3/3406 ,  G09G3/3611 ,  G09G2320/0626 ,  G09G2320/0646 ,  G09G2320/0653 ,  H05B33/0818

Abstract: A light source apparatus includes a light source which emits light, a response improving part which generates a response improving signal based on a first dimming control signal having a first rising period, a first operation part which generate a second dimming control signal which has the first rising period based on the first dimming control signal, a second operation part which generates a third dimming control signal by performing an arithmetic operation based on the second dimming control signal and the response improving signal, the third dimming control signal having a second rising period shorter than the first rising period and a light source driver which generates a light source driving signal based on the third dimming control signal to drive the light source based on the light source driving signal.

Abstract translation: 一种光源装置，包括发光的光源，基于具有第一上升周期的第一调光控制信号产生响应改善信号的响应改善部，产生具有第一上升周期的第二调光控制信号的第一操作部， 基于第一调光控制信号的上升周期，第二操作部，其通过基于第二调光控制信号和响应改善信号进行算术运算来生成第三调光控制信号，第三调光控制信号具有较短的第二上升周期 以及基于第三调光控制信号产生光源驱动信号的光源驱动器，以根据光源驱动信号驱动光源。

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.

公开(公告)号：US11887544B2

公开(公告)日：2024-01-30

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 ,  G09G3/36

CPC classification number: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G3/3696 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2320/041 ,  G09G2330/021 ,  G09G2330/028 ,  G09G2340/0435

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：US11847972B2

公开(公告)日：2023-12-19

申请号：US18159269

申请日：2023-01-25

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2320/0233 ,  G09G2320/0693 ,  G09G2330/10

Abstract: Disclosed is an electronic device, which includes a display panel, a data driving circuit, a scan driving circuit, a signal control circuit, and a power supply circuit that trims a first voltage and a second voltage based on a first control value generated based on the first voltage and the second voltage, and the power supply circuit includes a controller that generates the first control value, a sign determining circuit that determines a sign of the first control value based on the first voltage and the second voltage, a plurality of voltage generators that generate a trimming voltage of the first control value based on the first voltage and the second voltage, and a first memory that stores the first control value, and the first control value is a value for controlling the sign determining circuit and each of the plurality of voltage generators.