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公开(公告)号：US08890428B2
公开(公告)日：2014-11-18
申请号：US13710904
申请日：2012-12-11
Applicant: LG Display Co., Ltd.
Inventor： Younghun Ahn , Jongdae Kim , Sanggyu Kim , Byunggi Yoon , Minwoo Park
CPC classification number: H05B37/02 , G09G3/00 , G09G3/3406 , G09G2320/064 , G09G2330/022
Abstract: An apparatus for driving a light source of a backlight unit includes: light sources; and a light source driver operating in an idle mode according to an input dimming signal and reducing a dimming value of an output dimming signal for adjusting brightness of the light sources by stages by mixing PWM control and PWM count control in a time-series manner to thus implement low dimming in the idle mode, wherein the dimming value of the output dimming signal is lowered to a first dimming value through the PWM control during a first period and subsequently lowered to a second dimming value lower than the first dimming value through the PWM count control during a second period that follows the first period.
Abstract translation: 用于驱动背光单元的光源的装置包括：光源; 以及根据输入调光信号工作在空闲模式的光源驱动器，并且通过以时间序列方式混合PWM控制和PWM计数控制，降低输出调光信号的调光值，以逐级调节光源的亮度，以 从而在空闲模式下实现低调光，其中输出调光信号的调光值在第一时段期间通过PWM控制降低到第一调光值，随后通过PWM降低到低于第一调光值的第二调光值 在第一个时期之后的第二个时期内进行计数控制。
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公开(公告)号：US12165585B2
公开(公告)日：2024-12-10
申请号：US18225128
申请日：2023-07-22
Applicant: LG Display Co., Ltd.
Inventor： Junho Bong , Minwoo Park
IPC: G09G3/3233 , G09G3/3266
Abstract: A pixel of a display apparatus includes a light emitting device and a pixel circuit connected to first to third gate control lines and the light emitting device, the pixel circuit including first to fourth nodes. The pixel circuit includes a driving transistor connected to the first to third nodes, a first transistor connected to the first gate control line and the first and second nodes, a second transistor connected to the second gate control line, the second node, and a first driving voltage line, a third transistor connected to the first gate control line, the third node, and the fourth node, a fourth transistor connected to the first gate control line, the fourth node, and an initialization voltage line, a fifth transistor connected to the third gate control line, the third node, and a data line, and a storage capacitor between the first node and the fourth node.
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公开(公告)号：US11869433B2
公开(公告)日：2024-01-09
申请号：US17878905
申请日：2022-08-02
Applicant: LG Display Co., Ltd.
Inventor： Junho Bong , Minwoo Park
IPC: G09G3/3233 , G09G3/3266
CPC classification number: G09G3/3233 , G09G3/3266 , G09G2300/0426 , G09G2300/0819 , G09G2300/0842 , G09G2300/0861 , G09G2310/08 , G09G2320/0626
Abstract: A pixel of a display apparatus includes a light emitting device and a pixel circuit connected to first to third gate control lines and the light emitting device, the pixel circuit including first to fourth nodes. The pixel circuit includes a driving transistor connected to the first to third nodes, a first transistor connected to the first gate control line and the first and second nodes, a second transistor connected to the second gate control line, the second node, and a first driving voltage line, a third transistor connected to the first gate control line, the third node, and the fourth node, a fourth transistor connected to the first gate control line, the fourth node, and an initialization voltage line, a fifth transistor connected to the third gate control line, the third node, and a data line, and a storage capacitor between the first node and the fourth node.
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公开(公告)号：US11335247B2
公开(公告)日：2022-05-17
申请号：US17121059
申请日：2020-12-14
Applicant: LG Display Co., Ltd.
Inventor： Junho Bong , Minwoo Park
IPC: G09G3/30 , G09G3/32 , H01L27/32 , H01L29/786 , H01L27/12
Abstract: A light emitting display device includes a pixel circuit including: a first transistor having a first electrode connected to a first node coupled to a first power supply line, a second electrode connected to a second node, and a gate electrode connected to a third node; a second transistor having a first electrode connected to the first node, a second electrode connected to the third node, and a gate electrode connected to a first gate line; a light emitting diode connected to the first transistor; a first capacitor having a first electrode connected to the third node and a second electrode connected to a conductive line and an anode electrode of the light emitting diode; and a second capacitor having a first electrode connected to the third node and a second electrode connected to a constant voltage source which supplies a DC voltage.
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