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公开(公告)号：US12039916B2
公开(公告)日：2024-07-16
申请号：US18061101
申请日：2022-12-02
发明人： Eui Myeong Cho , Ho Cheol Kang , Jae Hyun Koh , Seok Young Yoon
IPC分类号： G09G3/32
CPC分类号： G09G3/32 , G09G2300/0426 , G09G2300/0819 , G09G2300/0842 , G09G2310/08 , G09G2320/0233 , G09G2320/0257 , G09G2320/0276 , G09G2320/045 , G09G2320/0673 , G09G2360/16
摘要： A display device includes: pixels, each of the pixels including at least one light emitting element and a first transistor configured to supply a driving current to the at least one light emitting element; a sensing unit configured to sense a driving current of the first transistor, which corresponds to a data voltage applied to one pixel from among the pixels, the sensing unit being configured to detect a luminance of the light emitting element, which corresponds to the driving current; a gamma calculator configured to receive the driving current and the luminance of the light emitting element from the sensing unit, to calculate a gamma changed based on the driving current and the luminance of the light emitting element, and to provide, to a memory, the gamma changed based on the driving current and the luminance of the light emitting element.
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公开(公告)号：US20220122524A1
公开(公告)日：2022-04-21
申请号：US17444165
申请日：2021-07-30
发明人： Eui Myeong Cho , Ho Cheol Kang , Seok Young Yoon , Dae Gwang Jang
IPC分类号： G09G3/32
摘要： A display device includes a pixel. The pixel includes an emission unit and a pixel circuit. The pixel circuit to provide a first driving current to the emission unit in a first current flowing direction in a first mode, and to provide a second driving current to the emission unit in a second current flowing direction different from the first current flowing direction in a second mode. The emission unit includes a first electrode and a second electrode spaced from each other, a first light emitting element connected between the first electrode and the second electrode in the first current flowing direction, and a second light emitting element connected between the first electrode and the second electrode in the second current flowing direction.
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公开(公告)号：US11282427B2
公开(公告)日：2022-03-22
申请号：US17007543
申请日：2020-08-31
发明人： Ha Neul Kim , Ho Cheol Kang , Dae Gwang Jang , Young Soo Hwang
IPC分类号： G09G3/20
摘要： A display device includes pixels coupled to scan lines, control lines, data lines, and sensing lines, a scan driver for supplying a scan signal to the scan lines and supplying a control signal to the control lines, a data driver for supplying one of an image data signal and a sensing data signal to the data lines, and a sensing circuit including an analog-digital converter (“ADC”) which converts a sensing value supplied through the sensing lines into a current code in a digital form, the sensing circuit correcting the current code by reflecting a conversion characteristic of the ADC, the sensing circuit sensing characteristics of the driving transistor based on the corrected current code.
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公开(公告)号：US11127352B2
公开(公告)日：2021-09-21
申请号：US17103530
申请日：2020-11-24
发明人： Ho Cheol Kang , Ha Neul Kim , Dae-Gwang Jang , Young-Soo Hwang
IPC分类号： G09G3/3258 , G09G3/3266 , G09G3/3275 , H02H9/04
摘要： An electrostatic discharge protection circuit including: a first electrostatic discharge diode including a cathode to receive a first voltage, and an anode connected to a sensing line; a first switching element to determine the first voltage as a precharging voltage applied to a source terminal of the driving transistor when a sensing operation is performed, and to determine the first voltage as a maximum voltage used in a display panel when the sensing operation is not performed; a second electrostatic discharge diode including a cathode connected to the sensing line, and an anode configured to receive a second voltage; and a second switching element configured to determine the second voltage as the precharging voltage when the sensing operation is performed, and to determine the second voltage as a minimum voltage used in the display panel when the sensing operation is not performed.
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公开(公告)号：US12062333B2
公开(公告)日：2024-08-13
申请号：US18112424
申请日：2023-02-21
发明人： Eui Myeong Cho , Ho Cheol Kang , Jae Hyun Koh , Seok Young Yoon
IPC分类号： G09G3/3233 , H01L27/146 , H01L33/24 , H01L33/44
CPC分类号： G09G3/3233 , H01L27/146 , H01L33/24 , H01L33/44 , G09G2300/0426 , G09G2300/0819 , G09G2300/0842 , G09G2320/0233
摘要： A pixel includes a first transistor connected between a first power line and a first node, and including a gate electrode connected to a second node, a second transistor connected between a data line and the second node, and including a gate electrode connected to a scan line, a third transistor connected between a first sensing line and the first node, and including a gate electrode connected to a first control line, a fourth transistor connected between a second sensing line and a third node, and including gate electrode connected to a second control line, a first sub light emitting unit including light emitting elements connected in parallel in a forward direction between the first node and the third node, and a second sub light emitting unit including light emitting elements connected in parallel in the forward direction between the third node and a second power line.
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公开(公告)号：US11961457B2
公开(公告)日：2024-04-16
申请号：US18094968
申请日：2023-01-09
发明人： Jae Hyun Koh , Sung Hoon Bang , Eui Myeong Cho , Ho Cheol Kang , Seok Young Yoon
IPC分类号： G09G3/32 , G09G3/3233
CPC分类号： G09G3/32 , G09G3/3233 , G09G2300/0819 , G09G2300/0842 , G09G2310/08 , G09G2320/0247 , G09G2320/0257
摘要： A display device, includes: a display panel including a pixel electrically coupled to a gate line and a data line; a gate driver configured to provide a gate signal to the gate line; and a data driver configured to provide a data signal to the data line, wherein the gate driver is configured to sequentially provide a first gate signal and a second gate signal to the gate line during a first frame period, wherein the data driver is configured to provide a first data signal to the data line in response to the first gate signal, and to provide a second data signal to the data line in response to the second gate signal, and wherein the second data signal is different from the first data signal and varies dependent on the first data signal.
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公开(公告)号：US11501698B2
公开(公告)日：2022-11-15
申请号：US17444165
申请日：2021-07-30
发明人： Eui Myeong Cho , Ho Cheol Kang , Seok Young Yoon , Dae Gwang Jang
IPC分类号： G09G3/32
摘要： A display device includes a pixel. The pixel includes an emission unit and a pixel circuit. The pixel circuit to provide a first driving current to the emission unit in a first current flowing direction in a first mode, and to provide a second driving current to the emission unit in a second current flowing direction different from the first current flowing direction in a second mode. The emission unit includes a first electrode and a second electrode spaced from each other, a first light emitting element connected between the first electrode and the second electrode in the first current flowing direction, and a second light emitting element connected between the first electrode and the second electrode in the second current flowing direction.
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