-
公开(公告)号：US11417262B2
公开(公告)日：2022-08-16
申请号：US16997642
申请日：2020-08-19
发明人： Keunoh Kang , Yanguk Nam , Gwangsoo Ahn
摘要： 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：US10935823B2
公开(公告)日：2021-03-02
申请号：US16260936
申请日：2019-01-29
发明人： Dae-Sik Lee , Yanguk Nam , Sanghyun Lee
IPC分类号： G02F1/13 , G09G3/3266 , G09G3/00 , G02F1/1345 , G09G3/36
摘要： A short-circuit detection circuit includes a voltage comparison block that receives a scan start signal from a scan start signal transmission line, receives a reference voltage from a reference voltage source, and outputs a comparison result by comparing the scan start signal with the reference voltage at a falling edge of a vertical start signal, and a short-circuit determination block that determines whether the scan start signal transmission line is short-circuited based on the comparison result and operates an over-current protection circuit by providing a short-circuit detection signal to the over-current protection circuit when the scan start signal transmission line is short-circuited.
-
公开(公告)号：US11626053B2
公开(公告)日：2023-04-11
申请号：US17669862
申请日：2022-02-11
发明人： Yanguk Nam
IPC分类号： G09G3/20
摘要： A display device includes a display panel, a display panel driving circuit, and a power management integrated circuit that generates driving voltages, receives driving set data from a timing controller, stores driving hex values corresponding to the driving set data in first internal registers, and determines voltage levels of the driving voltages based on the driving hex values. The power management integrated circuit divides the driving hex values into upper and lower decimal values, derives a result decimal value by applying the upper and lower decimal values to a first authentication-formula, generates a result hex value based on the result decimal value, compares an authentication hex value corresponding to authentication data received from the timing controller with the result hex value, and selectively operates in a normal mode or in a protection mode based on a comparison result between the authentication hex value and the result hex value.
-
公开(公告)号：US10255841B2
公开(公告)日：2019-04-09
申请号：US15228998
申请日：2016-08-04
发明人： Sujin Kim , Jongjae Lee , Yanguk Nam , Dae-sik Lee
IPC分类号： G09G3/20
摘要： A display device includes: a first data driving chip including: a first data driving circuit to generate a first data signal; and a first sensor to sense a first overcurrent flowing in the first data driving circuit based on a first power current flowing in the first data driving circuit to generate a first signal; a second data driving chip including: a second data driving circuit to generate a second data signal; and a second sensor to sense a second overcurrent flowing in the second data driving circuit based on a second power current flowing in the second data driving circuit to generate a second signal; and a power controller to control first and second powers respectively supplied to the first and second data driving chips, and to block at least one of the first and second powers based on at least one of the first and second signals.
-
公开(公告)号：US20170148375A1
公开(公告)日：2017-05-25
申请号：US15228998
申请日：2016-08-04
发明人： Sujin Kim , Jongjae Lee , Yanguk Nam , Dae-sik Lee
IPC分类号： G09G3/20
CPC分类号： G09G3/2092 , G09G3/20 , G09G2300/0426 , G09G2330/02 , G09G2330/028
摘要： A display device includes: a first data driving chip including: a first data driving circuit to generate a first data signal; and a first sensor to sense a first overcurrent flowing in the first data driving circuit based on a first power current flowing in the first data driving circuit to generate a first signal; a second data driving chip including: a second data driving circuit to generate a second data signal; and a second sensor to sense a second overcurrent flowing in the second data driving circuit based on a second power current flowing in the second data driving circuit to generate a second signal; and a power controller to control first and second powers respectively supplied to the first and second data driving chips, and to block at least one of the first and second powers based on at least one of the first and second signals.
-
公开(公告)号：US10657878B2
公开(公告)日：2020-05-19
申请号：US15827395
申请日：2017-11-30
发明人： Yanguk Nam , Jongjae Lee , Sujin Kim , Daesik Lee , Junki Hong , Heejeong Seo
摘要： A display device includes a display panel, pixels on the display panel, data and gate drivers, a timing controller which applies control signals respectively to the data and gate drivers, and a power management integrated circuit (“PMIC”) which applies a driving voltage to the data and gate drivers. The timing controller detects an operational condition of the display panel and selects one of stored power setting values to output the selected one of the power setting values to the PMIC. The PMIC includes, first and second storage banks, a controller which receives the power setting value from the timing controller, stores the power setting value in one of the first and second storage banks, and calls the stored power setting value to determine the driving voltage, and a power generator which applies the driving voltage based on the driving voltage determined by the controller.
-
公开(公告)号：US10515592B2
公开(公告)日：2019-12-24
申请号：US16043739
申请日：2018-07-24
发明人： Yanguk Nam , Dae-sik Lee , Yoomi Kim , Junghwan Hwang
IPC分类号： G09G3/3258 , G09G3/3233 , H01L27/32 , G09G3/36
摘要： A display device includes: a display panel including data lines, gate lines, and pixels, the display panel is operated in an active period or in a blank period; and a driving circuit for driving the display panel, the driving circuit including: a signal controller for outputting clock control signals; a voltage generator for receiving the clock control signals, wherein the voltage generator outputs active clock signals synchronized with the clock control signals during the active period and outputs blank clock signals during the blank period; and an overcurrent detection circuit for receiving the clock control signals and the blank clock signals, the overcurrent detection circuit detects an overcurrent of the blank clock signals, and a phase difference between the clock control signals in the active period is different from a phase difference between the clock control signals in the blank period.
-
公开(公告)号：US20190251888A1
公开(公告)日：2019-08-15
申请号：US16248112
申请日：2019-01-15
发明人： DAE-SIK LEE , Yanguk Nam , Yoomi Kim
IPC分类号： G09G3/20
CPC分类号： G09G3/20 , G02F1/136286 , G09G3/3266 , G09G3/3677 , G09G2300/0426 , G09G2310/0243 , G09G2310/0267 , G09G2310/08 , H01L27/3276
摘要： A gate driving device of a display device may include a voltage generator, a gate controller and a gate driver. The voltage generator may generate a gate driving voltage that varies between a gate-on voltage and a gate-off voltage. The gate controller may generate gate clock signals based on the gate driving voltage and gate control signals. The gate driver may generate a gate signal based on the gate clock signals. The gate control signals may include a first control signal and clock control signals, each varying between a high level and a low level. The gate controller may output the gate clock signals having a voltage level of the gate-off voltage when the first control signal and the clock control signals are each provided to the gate controller at the low level, thereby avoiding a display defect due to voltage ramping that may otherwise occur.
-
公开(公告)号：US10089952B2
公开(公告)日：2018-10-02
申请号：US15173392
申请日：2016-06-03
发明人： Yanguk Nam , Youngil Ban , Sunkyu Son , Sunkoo Kang , Taegon Kim
摘要： There is provided a display device including a power management integrated circuit outputting a driving voltage and a gamma voltage, a timing controller outputting an image data signal and a driving control signal, a data driver converting the image data signal to a data voltage signal based on the driving voltage, the gamma voltage, and the driving control signal, a power connecting portion connecting the power management integrated circuit and the data driver, a voltage detector detecting the driving voltage and the gamma voltage that are voltage-dropped in the power connecting portion, and outputting a feedback signal, and a power adjustor receiving the feedback signal and outputting a power control signal to the power management integrated circuit, and adjusting the driving voltage and the gamma voltage based on the power control 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
发明人： Yanguk Nam , Dae-Sik Lee
IPC分类号： G09G3/3258 , G09G3/3266 , G09G3/3291 , G09G3/36
CPC分类号： G09G3/3258 , G09G3/3266 , G09G3/3291 , G09G3/3696 , G09G2310/08 , G09G2320/0233 , G09G2320/0247 , G09G2320/041 , G09G2330/021 , G09G2330/028 , G09G2340/0435
摘要： 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.
-
-
-
-
-
-
-
-
-
搜索结果
24 条记录 (耗时 0.017 秒)
