公开(公告)号：US20190206357A1

公开(公告)日：2019-07-04

申请号：US16233206

申请日：2018-12-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Gwangsoo AHN ,  Sanghyun LEE ,  Dongwon PARK ,  Songyi HAN

IPC: G09G3/36 ,  H03K5/24 ,  G05F1/575

Abstract: A display device includes a driving controller sensing a pattern of first image signals from a source external to the driving controller and outputting a compensation selection signal corresponding to the sensed pattern. A voltage generator generates a driving power voltage in response to the compensation selection signal. The voltage generator includes a power converter generating the driving power voltage in response to a power control signal, a comparator comparing the driving power voltage with a reference voltage to output a feedback signal to a first node, and a compensation circuit including a plurality of compensation units. A selected compensation unit is connected to the first node, and a power control circuit outputs the power control signal in response to the feedback signal. The slew rate of the feedback signal may be controlled by a compensation circuit to remove a ripple component from the driving power voltage.

公开(公告)号：US20190035353A1

公开(公告)日：2019-01-31

申请号：US16152771

申请日：2018-10-05

Applicant: Samsung Display Co., Ltd.

Inventor： Jongjae LEE ,  Ikhyun AHN ,  Bongim PARK ,  Dongwon PARK

IPC: G09G3/36 ,  G09G3/3266 ,  G09G3/00

CPC classification number: 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

Abstract: 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.

公开(公告)号：US20190253048A1

公开(公告)日：2019-08-15

申请号：US16260346

申请日：2019-01-29

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ga-Na KIM ,  Po-Yun PARK ,  Hong-Kyu KIM ,  Myeongsu KIM ,  Dongwon PARK

IPC: H03K17/22 ,  G09G5/18

Abstract: A timing controller resetting circuit including: a resistor connected to an output node from which a reset signal is output and a first voltage source which supplies a first voltage; a capacitor connected to the output node and a second voltage source which supplies a second voltage that is lower than the first voltage; a reference voltage source configured to generate a reference voltage that is lower than the first voltage and higher than the second voltage; a comparator including a first input terminal which receives the first voltage, a second input terminal which receives the reference voltage, and an output terminal which outputs a comparison result signal generated by comparing the first voltage with the reference voltage; and a transistor including a first terminal which is connected to the output node, a second terminal which receives the second voltage, and a gate terminal which receives the comparison result signal.

公开(公告)号：US20200265787A1

公开(公告)日：2020-08-20

申请号：US16709068

申请日：2019-12-10

Applicant: Samsung Display Co., Ltd.

Inventor： Taegon IM ,  Sooyeon KIM ,  Dongwon PARK ,  Jae-Han LEE ,  Jung Hwan CHO

IPC: G09G3/3291 ,  G09G3/36

Abstract: A display device includes a display panel, a source driver, and an alignment detection circuit. The display panel includes data lines and pads connected to the data lines. The source driver includes output lines connected to the pads to supply a data signal, and a detection circuit to selectively connect a first detection line supplied with a first detection voltage and a second detection line supplied with a second detection voltage to the output lines. The alignment detection circuit includes a detection capacitor connected between the first detection line and the second detection line, and a voltage detection circuit connected to one end of the detection capacitor to detect a voltage of the detection capacitor. The detection circuit connects a (2n−1)-th output line of the output lines to the first detection line, and connects a (2n)-th output line of the output lines to the second detection line.

公开(公告)号：US20180286304A1

公开(公告)日：2018-10-04

申请号：US15944207

申请日：2018-04-03

Applicant: Samsung Display Co., LTD.

Inventor： Haengwon PARK ,  Hyeonseok BAE ,  Myoung Jun CHAI ,  Seunghoon HAN ,  Dongwon PARK

IPC: G09G3/22 ,  G02F1/1362 ,  H04N5/202

Abstract: A display apparatus includes a display panel, a gate driver and a data driver. The display panel displays an image and includes first sub-pixels which display a first color, second sub-pixels which display a second color different from the first color, first gate lines to which only the first sub-pixels are connected, second gate lines to which only the second sub-pixels are connected, and data lines. The gate sequentially applies first gate signals only to the first gate lines during a first duration of a first frame, and sequentially applies second gate signals only to the second gate lines during a second duration of the first frame, where the second duration is subsequent to the first duration. The data driver outputs data voltages to the data lines based on input image data in synchronization with a driving sequence of the first and second gate lines.

公开(公告)号：US20180033384A1

公开(公告)日：2018-02-01

申请号：US15665935

申请日：2017-08-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Heendol KIM ,  Jaihyun KOH ,  Bonghyun YOU ,  Jaehoon LEE ,  Dongwon PARK

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3648 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2320/0209 ,  G09G2330/06

Abstract: A method includes applying a common voltage to a display panel, digitally converting a feedback common voltage from the display panel, detecting an effective ripple signal exceeding a reference value based on the digitally converted feedback common voltage, comparing a total number of effective ripple signals detected during a first frame period with a threshold value, determining whether the effective ripple signals of the first frame period are crosstalk inducing signals based on a comparison result, and determining whether to change a polarity pattern of image data signals to be applied to the display panel during a second frame period based on a determination result in terms of the crosstalk inducing signal.