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公开(公告)号：US11790834B2
公开(公告)日：2023-10-17
申请号：US17537950
申请日：2021-11-30
发明人： Byungil Kim , Yangwook Kim , Pansoo Kim , Hyeongtae Kim , Sukyun Woo , Jisu Yoon , Hyunji Yoon
CPC分类号： G09G3/32 , G09G3/3426 , G09G2300/0814 , G09G2300/0842 , G09G2310/08 , G09G2320/0233 , G09G2320/0257 , G09G2320/064 , G09G2320/066 , G09G2320/0633
摘要： A display device may include: a light-emitting diode (LED) backlight unit (BLU), a pixel driving circuit configured to generate a scan signal and an image signal, a pixel circuit configured to generate an output current based on the scan signal and the image signal, and transmit the output current to the LED BLU, the pixel circuit including, a first transistor connected between an input pin and a node, the input pin configured to receive the image signal, the first transistor including a gate terminal configured to receive the scan signal, a second transistor connected between the node and a ground terminal, the second transistor including a gate terminal connected to the node, a third transistor connected between the node and a gate node, a fourth transistor configured to generate the output current according to a voltage of the gate node, and a capacitor connected to the gate node.
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2.发明公开公开(公告)号：US20230230551A1
公开(公告)日：2023-07-20
申请号：US18068861
申请日：2022-12-20
发明人： Hyunji Yoon , Yangwook Kim , Kyungchun Kim , Sukyun Woo , Pansoo Kim , Byungil Kim , Hyeongtae Kim , Jisu Yoon
IPC分类号： G09G3/34
CPC分类号： G09G3/3406 , G09G3/32
摘要： A method of driving a light emitting diode (LED) backlight unit, which includes a plurality of LED elements that are connected to a plurality of gate lines and a plurality of source lines, includes generating a plurality of gate signals applied to the plurality of gate lines. While the plurality of gate signals are generated, a non-overlap interval between activation intervals of two adjacent gate signals is generated. All of the plurality of gate signals are deactivated during the non-overlap interval. A plurality of source signals applied to the plurality of source lines are generated. While the plurality of source signals are generated, a high-impedance (Hi-Z) interval included in the non-overlap interval is generated. At least some of the plurality of source signals have a high-impedance state during the high-impedance interval.
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3.发明授权公开(公告)号：US12131708B2
公开(公告)日：2024-10-29
申请号：US18530891
申请日：2023-12-06
发明人： Hyunji Yoon , Yangwook Kim , Kyungchun Kim , Sukyun Woo , Pansoo Kim , Byungil Kim , Hyeongtae Kim , Jisu Yoon
CPC分类号： G09G3/3406 , G09G3/32 , G09G2300/0819 , G09G2310/0202 , G09G2330/021
摘要： A method of driving a light emitting diode (LED) backlight unit, which includes a plurality of LED elements that are connected to a plurality of gate lines and a plurality of source lines, includes generating a plurality of gate signals applied to the plurality of gate lines. While the plurality of gate signals are generated, a non-overlap interval between activation intervals of two adjacent gate signals is generated. All of the plurality of gate signals are deactivated during the non-overlap interval. A plurality of source signals applied to the plurality of source lines are generated. While the plurality of source signals are generated, a high-impedance (Hi-Z) interval included in the non-overlap interval is generated. At least some of the plurality of source signals have a high-impedance state during the high-impedance interval.
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4.发明授权公开(公告)号：US11875755B2
公开(公告)日：2024-01-16
申请号：US18068861
申请日：2022-12-20
发明人： Hyunji Yoon , Yangwook Kim , Kyungchun Kim , Sukyun Woo , Pansoo Kim , Byungil Kim , Hyeongtae Kim , Jisu Yoon
CPC分类号： G09G3/3406 , G09G3/32 , G09G2300/0819 , G09G2310/0202 , G09G2330/021
摘要： A method of driving a light emitting diode (LED) backlight unit, which includes a plurality of LED elements that are connected to a plurality of gate lines and a plurality of source lines, includes generating a plurality of gate signals applied to the plurality of gate lines. While the plurality of gate signals are generated, a non-overlap interval between activation intervals of two adjacent gate signals is generated. All of the plurality of gate signals are deactivated during the non-overlap interval. A plurality of source signals applied to the plurality of source lines are generated. While the plurality of source signals are generated, a high-impedance (Hi-Z) interval included in the non-overlap interval is generated. At least some of the plurality of source signals have a high-impedance state during the high-impedance interval.
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