-
1.发明申请公开(公告)号：US20180308448A1
公开(公告)日：2018-10-25
申请号：US15904722
申请日：2018-02-26
Applicant: Samsung Display Co., Ltd.
Inventor： Jongjae LEE , Dae-sik LEE , Yanguk NAM , Yoomi KIM , Songyi HAN
IPC: G09G3/36 , H03K5/1252 , H03K5/24
CPC classification number: G09G3/3696 , G09G2330/04 , G09G2330/12 , H03K5/1252 , H03K5/24 , H03K21/08
Abstract: A voltage generation circuit of a display device includes an over-current detection circuit that provides a driving voltage to a voltage terminal and outputs an over-current detection signal. The over-current detection circuit includes a current detector that outputs a detection signal at a first level when a voltage corresponding to an output current flowing through the voltage terminal during a blank period, in which a blank signal is activated, is lower than a first reference level or higher than a second reference level, a glitch remover that outputs a noise detection signal when a time period in which the detection signal is maintained at the first level is longer than a reference maintenance time, and a noise filter that activates the over-current detection signal when the noise detection signal is activated at least twice during a predetermined time period.
-
公开(公告)号：US20200098330A1
公开(公告)日：2020-03-26
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
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.
-
Patent Agency Ranking
公开(公告)号：US20190147783A1
公开(公告)日：2019-05-16
申请号：US16130215
申请日：2018-09-13
Applicant: Samsung Display Co., Ltd.
Inventor： Yanguk NAM , Dae-sik LEE
IPC: G09G3/20
Abstract: A display panel driving device includes a control signal generator which outputs a driving control signal, a driving unit which receives the driving control signal to output a panel driving signal, a protection circuit unit which receives a feedback current from the control signal generator and compares the feedback current with a reference current to perform a protection operation based on a result of comparison of the feedback current with the reference current, a temperature sensor which senses an ambient temperature, a controller which outputs a selection signal variable depending on the sensed ambient temperature, and a protection operation setting unit which sets a condition of the protection operation in response to the selection signal.
-
公开(公告)号：US20170316728A1
公开(公告)日：2017-11-02
申请号：US15498191
申请日：2017-04-26
Applicant: Samsung Display Co., Ltd.
Inventor： Jongjae LEE , Seokhwan LEE , Dae-sik LEE , Seyoung HEO
CPC classification number: G09G3/006 , G09G3/3677 , G09G3/3696 , G09G2310/0289 , G09G2310/08 , G09G2330/04 , G09G2330/12
Abstract: A display apparatus includes a plurality of pixels for receiving a plurality of gate signals, and a plurality of data voltages, a level shifter for receiving a gate driving voltage and a plurality of gate control clocks to generate a plurality of reference clocks, and for generating a plurality of control clocks by delaying the reference clocks by a predetermined time, a gate driver for outputting the gate signals in response to the control clocks, a short circuit protector for sensing a current of each control clock at each falling edge of each gate control clock to detect a static current of the each control clock, and for outputting a shut-down signal based on a count of the static current detection, and a voltage generator for providing the gate driving voltage to the level shifter, and shutting down in response to the shut-down signal.
-
5.发明申请公开(公告)号：US20190090321A1
公开(公告)日：2019-03-21
申请号：US16130186
申请日：2018-09-13
Applicant: Samsung Display Co., Ltd.
Inventor： Dae-sik LEE , Yanguk NAM , Songyi HAN
Abstract: A backlight unit includes a power converter which generates a light source power voltage to a power node, a first light emitting diode string connected between the power node and a first node to receive the light source power voltage through the power node, a second light emitting diode string connected between the power node and a second node to receive the light source power voltage through the power node, and a current controller which controls a current flowing through the first node of the first light emitting diode string and a current flowing through the second node of the second light emitting diode string in response to a dimming voltage signal. The current controller includes a switching unit which electrically connects the first node of the first light emitting diode string to the second node of the second light emitting diode string in response to a mode enable signal.
-
公开(公告)号：US20170309246A1
公开(公告)日：2017-10-26
申请号：US15495057
申请日：2017-04-24
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Dae-sik LEE , Jongjae LEE , Sujin KIM , Yanguk NAM
CPC classification number: G09G3/3696 , G09G3/3666 , G09G3/3677 , G09G3/3688 , G09G2310/04 , G09G2310/061 , G09G2330/021 , G09G2330/023 , G09G2330/025 , H02M1/08 , H02M3/158 , H02M3/1584 , H02M2001/0009
Abstract: A power supply device includes n power supply circuits connected in parallel and a controller to control a number of the operating power supply. The controller includes n detectors, a comparator, and an on/off controller. The n detectors are respectively connected to the n power supply circuits. The n detectors receive feedback current from the number of operating power supply circuits. The comparator compares the feedback current with predetermined first and second reference currents and outputs first, second, and third state signals. The on/off controller determines the number of the operating power supply circuits according to a cumulative number of each of the first to third state signals during a predetermined window section, and controls a on/off state of the power supply circuits according to the determined number.
-
公开(公告)号：US20160183334A1
公开(公告)日：2016-06-23
申请号：US14749220
申请日：2015-06-24
Applicant: Samsung Display Co., Ltd.
Inventor： Seungyoung CHOI , Dae-sik LEE
IPC: H05B33/08
CPC classification number: H05B33/0887 , G09G3/00 , G09G3/3406 , G09G2330/08 , H05B33/0815 , H05B33/0827 , Y02B20/341 , Y02B20/346
Abstract: Provided is a backlight unit. According to an exemplary embodiment, the backlight unit includes a plurality of light emitting strings, each of which includes at least one light emitting diode and one light transistor that is electrically connected to the light emitting diode, and a driving controller configured to detect source voltages of a plurality of light transistors provided in the light emitting strings. The driving controller is further configured to compare a source voltage of each of the light transistors with an overcurrent protection voltage and to turn off an operation of a corresponding light transistor having a source voltage level higher than the overcurrent protection voltage.
Abstract translation: 提供背光单元。 根据示例性实施例，背光单元包括多个发光串，每个发光串包括电连接到发光二极管的至少一个发光二极管和一个光晶体管，驱动控制器被配置为检测源电压 设置在发光串中的多个光晶体管。 驱动控制器还被配置为将每个光晶体管的源极电压与过电流保护电压进行比较，并且关闭具有高于过电流保护电压的源极电压电平的对应的光晶体管的操作。
-
-
-
-
-
-
Search Results
7
records
(took 0.016 seconds)
