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1. 发明申请

US20210359699A1 DIGITAL-TO-ANALOG CONVERTER AND DRIVING CIRCUIT OF DISPLAY DEVICE INCLUDING THE SAME 有权
公开(公告)号：US20210359699A1
公开(公告)日：2021-11-18
申请号：US17168448
申请日：2021-02-05
申请人： SAMSUNG DISPLAY CO., LTD. , Korea Advanced Institute of Science and Technology
发明人： Seong Joo LEE , Oh Jo KWON , Gyeong Gu KANG , Seok Tae KOH , Joon Chul GOH , Hyun Sik KIM , Bong Hyun YOU
IPC分类号： H03M1/66 , G09G3/20
摘要： A digital-to-analog converter (“DAC”) converts digital image data into analog image signals. The DAC includes a stage outputting different voltages to a first output terminal and a second output terminal based on a voltage supplied to a first input terminal, a voltage supplied to a second input terminal, and a first input bit. The stage includes a switch circuit including switches that are alternately turned on by a control signal, and outputting an intermediate output voltage to a third output terminal based on a first input voltage supplied to the first input terminal and a second input voltage supplied to the second input terminal, and a selector outputting one of the first input voltage and the second input voltage, and the intermediate output voltage.

2. 发明申请

US20220335871A1 OUTPUT BUFFER, DATA DRIVER, AND DISPLAY DEVICE HAVING THE SAME 有权
公开(公告)号：US20220335871A1
公开(公告)日：2022-10-20
申请号：US17500875
申请日：2021-10-13
申请人： Samsung Display Co., Ltd. , Korea Advanced Institute of Science and Technology
发明人： Seong Joo LEE , Seok Tae KOH , Gyeong Gu KANG , Oh Jo KWON , Hyun Sik KIM , Gyu Wan LIM , Keum Dong JUNG
IPC分类号： G09G3/20
摘要： An output buffer is disclosed that includes: a buffer circuit that outputs an output signal to an output terminal based on a first input signal provided to a first input terminal and a second input signal provided to a second input terminal; and a current supply circuit that is connected in parallel to the buffer circuit, and provides an auxiliary current to the output terminal based on the first input signal and the second input signal.

3. 发明申请

US20200090590A1 DISPLAY DEVICE AND METHOD OF DRIVING DISPLAY DEVICE 审中-公开
公开(公告)号：US20200090590A1
公开(公告)日：2020-03-19
申请号：US16402169
申请日：2019-05-02
申请人： Samsung Display Co., Ltd.
发明人： Jeon Kyoo KIM , Oh Jo KWON , Jiwoong KIM , JunYong SONG , Dong Won LEE , Jae Keun LIM
IPC分类号： G09G3/3258 , G09G3/3266
摘要： A display device includes data lines, scan lines, and pixels. Each of the pixels includes an organic light emitting diode, a first transistor (OLED), and a second transistor. The first transistor is electrically connected to an anode of the OLED. The second transistor is electrically connected to the first transistor, a scan line among the scan lines, and a data line among the data lines. The second transistors of the pixels may receive instances of a reference voltage from the data lines during a first period of a frame. The second transistors of the pixels may simultaneously receive instances of a turn-on scan signal from the scan lines during the first period of the frame. Cathodes of the OLEDs of the pixels may receive instances of a turn-off voltage for the OLEDs to turn off during the first period of the frame.

4. 发明申请

US20180082639A1 DISPLAY DEVICE AND DRIVING METHOD THEREOF 审中-公开
公开(公告)号：US20180082639A1
公开(公告)日：2018-03-22
申请号：US15699162
申请日：2017-09-08
申请人： SAMSUNG DISPLAY CO., LTD.
发明人： Jeong Hwan SHIN , Sung Hoon BANG , Sang Jae YEO , Oh Jo KWON
IPC分类号： G09G3/3258 , G09G3/3266 , G09G3/3275
摘要： A display device includes pixels connected to data lines and scan lines, a first compensator which is connected to sensing lines and senses deviation information of the sensing lines while supplying different voltages to adjacent sensing lines, and a sensing unit which is connected to the first compensator and senses characteristic information of each of the pixels.

5. 发明申请

US20230073395A1 DIGITAL-ANALOG CONVERTER, DATA DRIVING CIRCUIT HAVING THE SAME, AND DISPLAY DEVICE HAVING THE SAME 有权
公开(公告)号：US20230073395A1
公开(公告)日：2023-03-09
申请号：US17986675
申请日：2022-11-14
申请人： SAMSUNG DISPLAY CO., LTD.
发明人： Hyung Gun MA , Oh Jo KWON , Ji Woong KIM , Jun Yong SONG , Seong Joo LEE , Sang Hyun HEO
IPC分类号： G09G3/32
摘要： A digital-analog converter of the disclosure converts digital image data to generate analog data signals. The digital-analog converter includes a voltage divider which generates a plurality of gamma reference voltages based on a first reference voltage and a second reference voltage; a global ramp including a plurality of gamma decoders which generates a plurality of global gamma voltages based on the gamma reference voltages; a decoder which selects one of the global gamma voltages according to the digital image data to generate the analog data signals; and a ramp controller which turns off at least some of the gamma decoders based on the digital image data.

6. 发明申请

US20210335277A1 DATA DRIVER AND DISPLAY DEVICE INCLUDING A DATA DRIVER 有权
公开(公告)号：US20210335277A1
公开(公告)日：2021-10-28
申请号：US17232061
申请日：2021-04-15
申请人： Samsung Display Co., Ltd. , Korea University Research and Business Foundation
发明人： Young-Soo HWANG , Joon-Chul GOH , Oh Jo KWON , Ki-Duk KIM , Jeongmin KIM , Bong Hyun YOU , Hyung-Min LEE , Seung Hun CHOI
IPC分类号： G09G3/3275
摘要： A data driver includes a gamma voltage generator configured to generate gamma voltages based on a number of data bits of a pixel data; a first digital-to-analog block configured to generate a plurality of time-division gamma voltage signals respectively corresponding to a plurality of gamma voltage groups; a plurality of time-division gamma voltage line groups for transferring the plurality of time-division gamma voltage signals; a second digital-to-analog block configured to select a time-division gamma voltage signal among the time-division gamma voltage signals according to upper bits of the pixel data in each channel; a time-division gamma voltage select block configured to select a gamma voltage according to lower bits of the pixel data in each channel; and an output buffer block configured to output the selected gamma voltage in each channel.

7. 发明申请

US20230051918A1 INPUT SENSING UNIT AND METHOD OF DRIVING THE SAME 有权
公开(公告)号：US20230051918A1
公开(公告)日：2023-02-16
申请号：US17750566
申请日：2022-05-23
申请人： SAMSUNG DISPLAY CO., LTD.
发明人： Ji Woong KIM , Oh Jo KWON , Kyung Tea PARK , Keum Dong JUNG , Sang Hyun HEO
IPC分类号： G06F3/044 , G06F3/041 , H03M1/66
摘要： An input sensing unit includes a touch sensing unit, which includes a plurality of driving electrodes, a plurality of sensing electrodes, and a driving signal generating unit which provides driving signals to the driving electrodes. The sensing electrodes are insulated from and intersect the driving electrodes. The driving signal generating, unit includes touch drivers connected to driving electrodes and a digital-to-analog converter configured to provide a first signal or a second signal, and each of the touch drivers is connected to a preset number of driving electrodes among the driving electrodes.

8. 发明公开

US20240241598A1 TOUCH DETECTION DEVICE, DISPLAY DEVICE INCLUDING THE SAME, AND METHOD OF DRIVING THE SAME 审中-公开
公开(公告)号：US20240241598A1
公开(公告)日：2024-07-18
申请号：US18469714
申请日：2023-09-19
申请人： SAMSUNG DISPLAY CO., LTD. , Research & Business Foundation Sungkyunkwan University
发明人： Ji Woong KIM , Kang Yoon LEE , Oh Jo KWON , Dong Gyu KIM , Chang Hyeon KIM
IPC分类号： G06F3/041 , G06F3/044 , H03K17/96
CPC分类号： G06F3/04166 , G06F3/044 , H03K17/962
摘要： A touch detection device supplies driving signals generated based on orthogonal carriers and a CDMA scheme to driving electrodes. A touch driving circuit drives the driving electrodes in groups including a first group and a second group, supplies first driving signals based on a designated first frequency and first orthogonal codes set to correspond to the driving electrodes of the first group, respectively, to the driving electrodes of the first group, and supplies second multiple driving signals based on a second frequency orthogonal to the first frequency and second orthogonal codes set to correspond to the driving electrodes of the second group, respectively, to the driving electrodes of the second group.

9. 发明申请

US20200051496A1 DISPLAY DEVICE PERFORMING A SENSING OPERATION 审中-公开
公开(公告)号：US20200051496A1
公开(公告)日：2020-02-13
申请号：US16538597
申请日：2019-08-12
申请人： Samsung Display Co., Ltd.
发明人： Hyungryul KANG , Oh Jo KWON , Yoshimura HIDEO , Bong-Hyun YOU , Jaekeun LIM
IPC分类号： G09G3/3225 , G09G3/3275 , G09G3/3266
摘要： A display device includes: a display panel including a plurality of pixels; a scan driver connected to the plurality of pixels through a plurality of scan lines; a data driver connected to the plurality of pixels through a plurality of data lines; an emission driver connected to the plurality of pixels through a plurality of emission control lines; a sensing circuit connected to the plurality of pixels through a plurality of sensing lines; and a controller configured to control the scan driver, the data driver, the emission driver and the sensing circuit, wherein, in an active period of each frame period, the scan driver sequentially applies a sensing pulse and a scan pulse to at least one scan line of the plurality of scan lines, and applies the scan pulse to remaining scan lines of the plurality of scan lines.

10. 发明申请

US20150077314A1 AMOLED DISPLAY DEVICE AND DRIVING METHOD THEREOF 有权
标题翻译： AMOLED显示设备及其驱动方法
公开(公告)号：US20150077314A1
公开(公告)日：2015-03-19
申请号：US14253725
申请日：2014-04-15
申请人： Samsung Display Co., Ltd.
发明人： Bo Yeon KIM , Oh Jo KWON , Choong Sun SHIN
IPC分类号： G09G3/32
CPC分类号： G09G3/3233 , G09G2300/0842 , G09G2320/045
摘要： A display device is disclosed. In one aspect, the display device includes a plurality of pixels, a plurality of data lines respectively connected to the pixels, and a compensation unit connected to at least one the data lines. The compensation unit includes a first capacitor storing a leakage current of a pixel connected to the data line, a second capacitor storing a difference current, where the difference current is the difference between a reference current and a pixel current measured when a data signal of a reference gray signal is applied to the pixel. The compensation unit also includes a comparator outputting a difference value between the voltages stored in the first and second capacitors. According to embodiments, is possible to measure an accurate pixel current regardless of a leakage current and accurately detect deterioration of a pixel.
摘要翻译：公开了一种显示装置。一方面，显示装置包括多个像素，分别连接到像素的多条数据线以及连接到至少一条数据线的补偿单元。补偿单元包括存储连接到数据线的像素的漏电流的第一电容器，存储差电流的第二电容器，其中差电流是参考电流与当a的数据信号之间测量的像素电流之间的差将参考灰度信号应用于像素。补偿单元还包括输出存储在第一和第二电容器中的电压之间的差值的比较器。根据实施例，可以测量精确的像素电流，而不管漏电流如何，并准确地检测像素的劣化。

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