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公开(公告)号：US20170309246A1
公开(公告)日：2017-10-26
申请号：US15495057
申请日：2017-04-24
发明人： Dae-sik LEE , Jongjae LEE , Sujin KIM , Yanguk NAM
CPC分类号： 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
摘要： 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.
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公开(公告)号：US20170343868A1
公开(公告)日：2017-11-30
申请号：US15381138
申请日：2016-12-16
发明人： Kwihyun KIM , Jongjae LEE , Junghwan HWANG , Jongdo KEUM , Yoonsik PARK , Hongmin YOON
IPC分类号： G02F1/1343 , G02F1/1362 , H01L29/786 , H01L27/12 , G09G3/36 , G02F1/1333 , G02F1/1339 , G02F1/1368
摘要： A display apparatus includes a first substrate, a first dummy substrate on the first substrate, and a second dummy substrate extending from the first dummy substrate and bent. The second dummy substrate is on different side surfaces of the first substrate in a first direction. The display apparatus also includes a plurality of pixels on the first dummy substrate, a gate driver on the second dummy substrate and connected to the pixels, and a data driver connected to one side of the first dummy substrate in a second direction crossing the first direction and connected to the pixels.
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公开(公告)号：US20170337890A1
公开(公告)日：2017-11-23
申请号：US15596496
申请日：2017-05-16
发明人： Seokhwan LEE , Jongjae LEE , Junki HONG
IPC分类号： G09G3/36
摘要： A power supply device includes a power circuit, feedback circuit, compensation circuit, and PWM controller. The power circuit generates an output voltage based on a PWM signal. The feedback circuit outputs a feedback voltage. The compensation circuit compares a reference voltage with the feedback voltage and outputs a compensation signal based on a comparison result. The PWM controller adjusts the duty ratio of the PWM signal based on the compensation signal. The compensation circuit includes a comparator to compare the feedback voltage with the reference voltage, a first voltage adjuster to adjust a voltage level of a compensation voltage based on the comparison result, and a compensator output the compensation signal based on the voltage level of the compensation voltage. The compensation signal has a width in a high section that varies. The booster boosts the response speed of the compensator in a predetermined section based on a control signal.
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公开(公告)号：US20180158397A1
公开(公告)日：2018-06-07
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
CPC分类号： G09G3/2096 , G09G3/003 , G09G3/3611 , G09G3/3677 , G09G3/3688 , G09G3/3696 , G09G2310/08 , G09G2320/041 , G09G2320/0673 , G09G2320/0693 , G09G2330/021 , G09G2330/023
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.
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公开(公告)号：US20170316728A1
公开(公告)日：2017-11-02
申请号：US15498191
申请日：2017-04-26
发明人： Jongjae LEE , Seokhwan LEE , Dae-sik LEE , Seyoung HEO
CPC分类号： G09G3/006 , G09G3/3677 , G09G3/3696 , G09G2310/0289 , G09G2310/08 , G09G2330/04 , G09G2330/12
摘要： 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.
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公开(公告)号：US20200279523A1
公开(公告)日：2020-09-03
申请号：US16876380
申请日：2020-05-18
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.
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公开(公告)号：US20190035353A1
公开(公告)日：2019-01-31
申请号：US16152771
申请日：2018-10-05
发明人： Jongjae LEE , Ikhyun AHN , Bongim PARK , Dongwon PARK
IPC分类号： G09G3/36 , G09G3/3266 , G09G3/00
CPC分类号： G09G3/3696 , G09G3/003 , G09G3/3266 , G09G3/3674 , G09G3/3685 , G09G2310/0243 , G09G2310/0267 , G09G2310/0278 , G09G2310/0283 , G09G2310/0289 , G09G2320/02 , G09G2320/0223 , G09G2320/103 , G09G2330/028
摘要： A display apparatus includes a controller which generates control signals and outputs image data, a compensating circuit which receives a portion of the control signals from the controller and generates a compensation signal, a voltage generating circuit which converts an input voltage to a driving voltage and increases or decreases a voltage level of the driving voltage in a frame period in response to the compensation signal, a driving part which receives the control signals and the image data from the controller and receives the driving voltage from the voltage generating circuit to generate a panel driving signal, and a display panel which receives the panel driving signal from the driving part to display an image.
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8.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
发明人： Jongjae LEE , Dae-sik LEE , Yanguk NAM , Yoomi KIM , Songyi HAN
IPC分类号： G09G3/36 , H03K5/1252 , H03K5/24
CPC分类号： G09G3/3696 , G09G2330/04 , G09G2330/12 , H03K5/1252 , H03K5/24 , H03K21/08
摘要： 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.
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