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公开(公告)号：US11615749B2
公开(公告)日：2023-03-28
申请号：US17379929
申请日：2021-07-19
发明人： Hui Nam , Hyo Jin Lee , Jinyoung Roh , Sehyuk Park
IPC分类号： G09G3/3258 , G09G3/3266 , G09G3/3291
摘要： A display apparatus includes a display panel, a gate driver, a data driver and an emission driver. The display panel includes a pixel. The gate driver outputs a data write gate signal having a corresponding active level and a data initialization gate signal having a corresponding active level to the pixel in a writing frame, outputs the data write gate signal not having the corresponding active level and the data initialization gate signal not having the corresponding active level to the pixel in a holding frame and outputs the data write gate signal having the corresponding active level and the data initialization gate signal not having the corresponding active level to the pixel in a writing compensation frame. The data driver outputs a data voltage to the pixel. The emission driver outputs an emission signal to the pixel.
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公开(公告)号：US11545067B2
公开(公告)日：2023-01-03
申请号：US17520907
申请日：2021-11-08
发明人： Hyo Jin Lee , Jae Keun Lim , Hong Soo Kim , Jinyoung Roh , Sehyuk Park
IPC分类号： G09G3/20
摘要： A display apparatus including: a display panel configured to display an image based on input image data; a data driver configured to output a data voltage to the display panel; and a driving controller configured to determine a driving frequency of the display panel based on flicker values for grayscale values of the input image data and output a driving frequency signal representing the driving frequency of the display panel to a host.
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公开(公告)号：US11514855B2
公开(公告)日：2022-11-29
申请号：US17219729
申请日：2021-03-31
发明人： Jaekeun Lim , Hongsoo Kim , Jinyoung Roh , Sehyuk Park , Hyojin Lee
IPC分类号： G09G3/3258
摘要： A display device includes a pixel, wherein the pixel includes a light emitting element, a first transistor connected to a first power line and the light emitting element and controlled by a voltage of a first node, a second transistor connected to a data line and the first transistor and controlled by an i-th scan signal, a third-first transistor connected to the first transistor and a second node and controlled by a first control signal, a third transistor connected to the second node and the first node and controlled by a second control signal, and a dummy transistor including a first electrode receiving a reference voltage, a second electrode connected to the second node, and a control electrode connected to an emission line.
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公开(公告)号：US11468815B2
公开(公告)日：2022-10-11
申请号：US17548960
申请日：2021-12-13
发明人： Sehyuk Park , Hongsoo Kim , Jaekeun Lim , Jinyoung Roh , Hyojin Lee
IPC分类号： G09G3/20
摘要： A display device includes a display panel including a first display region and a second display region surrounding the first display region, where a first pixel having a first size is disposed in the first display region, and a second pixel having a second size is disposed in the second display region, a gate driver which applies a gate signal to a gate line, a data driver which applies a data voltage to a data line, and a timing controller which controls the gate driver and the data driver. The gate line includes a first gate line connected to both the first pixel and the second pixel, and a second gate line connected only to the second pixel. The data line includes a first data line which does not transmit the data voltage to the second pixel connected to the second gate line, and a second data line which transmits the data voltage to the second pixel connected to the second gate line.
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公开(公告)号：US11462145B2
公开(公告)日：2022-10-04
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：US11455958B2
公开(公告)日：2022-09-27
申请号：US17347468
申请日：2021-06-14
发明人： Sehyuk Park , Hyojin Lee , Hui Nam , Jinyoung Roh , Bong Hyun You , Eunho Lee
IPC分类号： G09G3/3275
摘要： A display device includes: a display panel including a plurality of pixels; and a driving controller configured to: generate a data signal corresponding to an input image data; generate a data voltage based on the data signal; and output the data voltage to the pixels, wherein the driving controller is configured to output the data signal in at least one driving frequency higher than a predetermined low frequency during an image transition period in a low frequency driving mode during which the data signal outputs in the low frequency.
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67.发明授权公开(公告)号：US11410599B2
公开(公告)日：2022-08-09
申请号：US17204213
申请日：2021-03-17
发明人： Sehyuk Park , Jae Keun Lim , Hong Soo Kim , Jin Young Roh , Hyo Jin Lee
IPC分类号： G09G3/3225 , G09G3/3233 , H01L27/32
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：US11380269B2
公开(公告)日：2022-07-05
申请号：US17460553
申请日：2021-08-30
发明人： Hyo Jin Lee , Sangan Kwon , Hui Nam , Jinyoung Roh , Sehyuk Park
IPC分类号： G09G3/30 , G09G3/36 , G09G3/3291
摘要： A display device includes a display panel including a plurality of pixels and a display panel driver configured to drive the display panel. Here, the display panel driver is configured to receive input image data, to drive the display panel at a first driving frequency when the input image data corresponds to a moving image, and to select one of a plurality of flicker lookup tables based on the first driving frequency and drive the display panel at a second driving frequency based on the flicker lookup table when the input image data corresponds to a still image.
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公开(公告)号：US11348508B2
公开(公告)日：2022-05-31
申请号：US16989073
申请日：2020-08-10
发明人： Sehyuk Park , Hong Soo Kim , Sangan Kwon , Jinyoung Roh , Hyo Jin Lee
IPC分类号： G09G3/20 , G09G3/3291
摘要： A display apparatus includes a display panel, a data driver and a driving controller. The display panel is configured to display an image based on input image data. The data driver is configured to output a data voltage to the display panel. The driving controller includes a frequency adjuster circuit configured to determine a driving frequency of the display panel, and a dithering circuit configured to change a grayscale value of the input image data according to frames. The frequency adjuster circuit is configured to determine the driving frequency of the display panel based on the input image data and based on whether the dithering part is activated.
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公开(公告)号：US11341916B2
公开(公告)日：2022-05-24
申请号：US16973459
申请日：2019-05-31
发明人： Hyo-Jin Lee , Sehyuk Park
IPC分类号： G09G3/3258 , G09G3/3275
摘要： A display apparatus includes a display panel, a gate driver, a data driver and an emission driver. The display panel includes a pixel comprising a switching element of a first type and a switching element of a second type different from the first type. The gate driver is configured to generate a gate signal based on a vertical start signal and a gate clock signal and output the gate signal to the display panel. The data driver is configured to output a data voltage to the display panel. The emission driver is configured to output an emission to the display panel. A driving frequency of the display panel is varied according to an input image. The gate clock signal has an active duration having a varied length according to the driving frequency.
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