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公开(公告)号：US20240233654A9
公开(公告)日：2024-07-11
申请号：US18402167
申请日：2024-01-02
发明人： Sehyuk PARK , Hyo-Jin LEE
IPC分类号： G09G3/3291 , H10K59/121
CPC分类号： G09G3/3291 , H10K59/1213 , H10K59/1216 , G09G2310/0272
摘要： A display device includes a display panel including a pixel including switching elements of a first type and a second type different from the first type, a gate driver for generating a gate signal based on a gate clock signal and providing the gate signal to the display panel, a data driver for providing data voltage to the display panel, an emission controller for providing an emission controlling signal to the display panel, and a driving controller for generating control signals for controlling the gate and data drivers, and the emission controller. In a low-frequency driving mode, the display panel operates in a writing frame for writing data in the pixel and in a holding frame for holding the data written in the pixel, and the driving controller provides the gate driver with a gate clock signal having a direct current (DC) voltage during the holding frame.
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公开(公告)号：US20220383809A1
公开(公告)日：2022-12-01
申请号：US17882919
申请日：2022-08-08
发明人： Sehyuk PARK , Jae Keun LIM , Hong Soo KIM , Jin Young ROH , Hyo Jin LEE
IPC分类号： G09G3/3225 , H01L27/32 , G09G3/3233
摘要： A pixel of an organic light emitting diode display device includes a capacitor, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a ninth transistor and an organic light emitting diode. The third transistor includes first and second sub-transistors which are coupled to each other in series between a drain of the first transistor and a gate node, and a fourth transistor includes third and fourth sub-transistors which are coupled to each other in series between a line of an initialization voltage and the gate node. The eighth transistor applies a reference voltage to a first node between the first and second sub-transistors in response to an emission signal, and a ninth transistor applies the reference voltage to a second node between the third and fourth sub-transistors in response to the emission signal.
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公开(公告)号：US20220157253A1
公开(公告)日：2022-05-19
申请号：US17587325
申请日：2022-01-28
发明人： HongSoo KIM , Sangan KWON , Jinyoung ROH , Sehyuk PARK , Sukhun LEE , Hyojin LEE
IPC分类号： G09G3/3266 , G09G3/3275
摘要： A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line of the display panel. The data driver outputs a data voltage to a data line of the display panel. The driving controller controls operations of the gate driver and the data driver and drive a still image display area and a video image display area of a display area of the display panel in different driving frequencies. The driving controller includes a still image determiner which divides the input image data into a plurality of still image determining blocks, respectively determines whether the still image determining blocks represent a still image or a video image and determines a boundary between the still image display area and the video image display area.
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公开(公告)号：US20210366340A1
公开(公告)日：2021-11-25
申请号：US17397000
申请日：2021-08-09
发明人： Jinyoung ROH , HongSoo KIM , Sangan KWON , Sehyuk PARK , Hyo Jin LEE
IPC分类号： G09G3/20
摘要： A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel including a gate line and a data line displays an image based on input image data. The gate driver outputs a gate signal to the gate line. The data driver outputs a data voltage to the data line. The driving controller includes an area divider dividing the input image data into first and second area data, a first variable frequency driver determining a first driving frequency of the first area data based on a flicker value according to a grayscale value and generating a first data signal of the first driving frequency and a second variable frequency driver determining a second driving frequency of the second area data based on a flicker value according to a grayscale value and generating a second data signal of the second driving frequency.
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公开(公告)号：US20210097924A1
公开(公告)日：2021-04-01
申请号：US16992011
申请日：2020-08-12
发明人： Suk Hun LEE , Sangan KWON , Hong Soo KIM , Jin Young ROH , Sehyuk PARK , Hyo Jin LEE
IPC分类号： G09G3/20
摘要： A display apparatus includes a display panel displaying an image based on an input image data, a data driver outputting a data voltage to a data line, and a driving controller determining a driving frequency of the display panel based on the input image data. The driving controller includes a flicker value storage configured to store flicker values for grayscale values corresponding to the input image data, a voltage drop determiner configured to adjust a flicker value of the flicker values based on a voltage drop of the display panel, a still image determiner configured to determine whether the input image data is a still image or a video image, and a driving frequency determiner configured to determine the driving frequency of the display panel using the flicker value based on the input image data being the still image.
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公开(公告)号：US20210020107A1
公开(公告)日：2021-01-21
申请号：US16914163
申请日：2020-06-26
发明人： Sehyuk PARK , Hyojin LEE , Sangan KWON , Jinyoung ROH
IPC分类号： G09G3/3258 , G09G3/3291
摘要： A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line of the display panel. The data driver outputs a data voltage to a data line of the display panel. The driving controller is configured to control an operation of the gate driver and an operation of the data driver, to determine a driving mode of the display apparatus among one of a normal driving mode and a low frequency driving mode, and to determine a driving frequency of the display panel based on the input image data. The driving controller includes a flicker value storage configured to store flicker values for a part of grayscale values among all of grayscale values of the input image data.
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公开(公告)号：US20190318685A1
公开(公告)日：2019-10-17
申请号：US16383436
申请日：2019-04-12
发明人： Sehyuk PARK , Hyojin LEE , Hui NAM
IPC分类号： G09G3/32
摘要： A display device is capable of improving the image quality, the display device including: a display panel; a pixel on the display panel and including at least one light emitting element; a timing controller configured to receive an image data signal of the pixel and to compensate for a gray value of the image data signal based on the number of light emitting elements of the pixel to generate a compensated image data signal; and a data driver configured to select a compensation data signal corresponding to the compensated image data signal from the timing controller and to apply the compensation data signal to the pixel.
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公开(公告)号：US20210233465A1
公开(公告)日：2021-07-29
申请号：US17227579
申请日：2021-04-12
发明人： Hyo Jin LEE , Joon-Chul GOH , Sangan KWON , Hui NAM , Jin Young ROH , Sehyuk PARK
IPC分类号： G09G3/325 , G09G3/3275
摘要： A pixel circuit includes a main-circuit that controls an organic light-emitting element by controlling a driving current to flow into the organic light-emitting element and a sub-circuit including a first compensation transistor including a gate terminal which receives a first gate signal, a second compensation transistor including a gate terminal which receives a second gate signal, and an initialization transistor including a gate terminal which receives an initialization signal. Here, in a low-frequency driving mode, a driving frequency of the first gate signal is N hertz (Hz), a driving frequency of the initialization signal is N Hz, a driving frequency of the second gate signal is M Hz, the first compensation transistor and the initialization transistor are turned on during a first time duration in N non-light-emitting periods per second, and the second compensation transistor is turned on during a second time duration in M non-light-emitting periods per second.
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公开(公告)号：US20210074217A1
公开(公告)日：2021-03-11
申请号：US16988643
申请日：2020-08-08
发明人： Hyo Jin LEE , Joon-Chul GOH , Sangan KWON , Hong Soo KIM , Hui NAM , Jin Young ROH , Sehyuk PARK
IPC分类号： G09G3/3258 , G09G3/3291 , G09G3/3266
摘要： A pixel includes: a storage capacitor connected between a first power supply voltage and a gate node; a first transistor including a gate electrode connected to the gate node; a second transistor to transfer a data signal to a source of the first transistor in response to a scan signal; a third transistor to diode-connect the first transistor in response to the scan signal, and including first and second sub-transistors serially connected between the gate node and a drain of the first transistor; a fourth transistor to transfer an initialization voltage to the gate node in response to an initialization signal, and including third and fourth sub-transistors serially connected between the gate node and the initialization voltage; and an organic light emitting diode including a cathode connected to a second power supply voltage. At least one of the second and fourth sub-transistors includes a bottom electrode.
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公开(公告)号：US20210027720A1
公开(公告)日：2021-01-28
申请号：US16922906
申请日：2020-07-07
发明人： Sehyuk PARK , Joon-Chul GOH , Sangan KWON , HongSoo KIM , Hui NAM , Jinyoung ROH , Hyojin LEE
IPC分类号： G09G3/3291 , G09G3/3266
摘要： A display device includes a display panel including a first partial panel region and a second partial panel region, and a panel driver configured to drive the display panel. The panel driver determines a first driving frequency for the first partial panel region and a second driving frequency for the second partial panel region. When the first driving frequency and the second driving frequency are different from each other, the panel driver sets a boundary portion including a boundary between the first partial panel region and the second partial panel region, and determines a third driving frequency for the boundary portion to be between the first driving frequency and the second driving frequency.
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