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Patent Agency Ranking
公开(公告)号：US11217154B2
公开(公告)日：2022-01-04
申请号：US17147768
申请日：2021-01-13
Inventor： Minjae Jeong , Keechan Park , Joonho Lee , Kyunghoon Chung , Chongchul Chai
IPC: G09G3/36 , H03K3/0233 , G09G3/32
Abstract: A display panel includes sub-pixels each including a light-emitting element and a pixel circuit including a first transistor and a second transistor; a timing control unit to generate bias data based on first characteristic information of the first transistor, and generate correction data based on second characteristic information of the second transistor; and a data sensing driving unit configured to receive the bias data and the correction data, and output a bias voltage and a grayscale voltage to the pixel circuit. The pixel circuit includes the first transistor to output a driving current to the light-emitting element; a first driving circuit to control a magnitude of the driving current based on the bias voltage; and a second driving circuit including the second transistor and configured to control a pulse width of the driving current based on the grayscale voltage.
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2.发明公开公开(公告)号：US20240054959A1
公开(公告)日：2024-02-15
申请号：US18205901
申请日：2023-06-05
Inventor： Kyungho Kim , Keechan Park , Yikyoung You , Sangyong No , Gichang Lee , Nokyung Park , Sunkwun Son , Donghee Shin
IPC: G09G3/3266
CPC classification number: G09G3/3266 , G09G2300/0842 , G09G2310/0286
Abstract: A gate driving circuit includes a capacitor connected between a first gate of a pull-down transistor and a control node, and a control transistor connected between the control node and a ground terminal and having a gate connected to the ground terminal.
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公开(公告)号：US11373586B2
公开(公告)日：2022-06-28
申请号：US17078378
申请日：2020-10-23
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Minjae Jeong , Joonho Lee , Keechan Park , Kyunghoon Chung , Chongchul Chai
IPC: G09G3/32
Abstract: A display panel, a pixel circuit, and a display device are disclosed. The display panel includes sub-pixels and a driver driving the sub-pixels. Each sub-pixel includes: an emission element; a first transistor configured to generate a driving current; a constant current control circuit configured to receive a reference voltage and a bias voltage for setting a value of the driving current and including a first capacitor configured to store a first compensation voltage generated by adding a threshold voltage of the first transistor to a difference between the bias voltage and the reference voltage; and a pulse width control circuit configured to receive a data voltage used to determine an emission duration of the emission element and including a second transistor configured to control a pulse width of the driving current according to the data voltage and a second capacitor configured to store a second compensation voltage corresponding to a threshold voltage of the second transistor.
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公开(公告)号：US12190824B2
公开(公告)日：2025-01-07
申请号：US18205901
申请日：2023-06-05
Inventor： Kyungho Kim , Keechan Park , Yikyoung You , Sangyong No , Gichang Lee , Nokyung Park , Sunkwun Son , Donghee Shin
IPC: G09G3/3266
Abstract: A gate driving circuit includes a capacitor connected between a first gate of a pull-down transistor and a control node, and a control transistor connected between the control node and a ground terminal and having a gate connected to the ground terminal.
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公开(公告)号：US20210312855A1
公开(公告)日：2021-10-07
申请号：US17078378
申请日：2020-10-23
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Minjae Jeong , Joonho Lee , Keechan Park , Kyunghoon Chung , Chongchul Chai
IPC: G09G3/32
Abstract: A display panel, a pixel circuit, and a display device are disclosed. The display panel includes sub-pixels and a driver driving the sub-pixels. Each sub-pixel includes: an emission element; a first transistor configured to generate a driving current; a constant current control circuit configured to receive a reference voltage and a bias voltage for setting a value of the driving current and including a first capacitor configured to store a first compensation voltage generated by adding a threshold voltage of the first transistor to a difference between the bias voltage and the reference voltage; and a pulse width control circuit configured to receive a data voltage used to determine an emission duration of the emission element and including a second transistor configured to control a pulse width of the driving current according to the data voltage and a second capacitor configured to store a second compensation voltage corresponding to a threshold voltage of the second transistor.
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