公开(公告)号：US20240105130A1

公开(公告)日：2024-03-28

申请号：US18530891

申请日：2023-12-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyunji YOON ,  Yangwook KIM ,  Kyungchun KIM ,  Sukyun WOO ,  Pansoo KIM ,  Byungil KIM ,  Hyeongtae KIM ,  Jisu YOON

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G3/32

Abstract: 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.

公开(公告)号：US20230419887A1

公开(公告)日：2023-12-28

申请号：US18463914

申请日：2023-09-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Byungil KIM ,  Yangwook KIM ,  Pansoo KIM ,  Hyeongtae KIM ,  Sukyun WOO ,  Jisu YOON ,  Hyunji YOON

IPC: G09G3/32 ,  G09G3/34

CPC classification number: G09G3/32 ,  G09G3/3426 ,  G09G2310/08 ,  G09G2300/0814 ,  G09G2300/0842 ,  G09G2320/066 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/0633 ,  G09G2320/064

Abstract: 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.

公开(公告)号：US20220180801A1

公开(公告)日：2022-06-09

申请号：US17537950

申请日：2021-11-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Byungil KIM ,  Yangwook KIM ,  Pansoo KIM ,  Hyeongtae KIM ,  Sukyun WOO ,  Jisu YOON ,  Hyunji YOON

IPC: G09G3/32

Abstract: 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.