公开(公告)号：US20180122293A1

公开(公告)日：2018-05-03

申请号：US15802118

申请日：2017-11-02

Applicant: Samsung Display Co., Ltd.

Inventor： Woon Yong LIM ,  Sung Soo CHOI ,  Ki Hyun PYUN

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G3/20 ,  G09G2310/06 ,  G09G2310/08 ,  G09G2320/0209 ,  G09G2330/021 ,  G09G2330/028 ,  G09G2330/06 ,  G09G2360/16 ,  H03K7/08 ,  H03L7/08

Abstract: A converter includes a phase locked loop (“PLL”) unit which outputs a first frequency signal having a first frequency during a first period of one frame and to output a second frequency signal modulated to have a frequency corresponding to a pattern of an image signal during a second period other than the first period, a pulse width modulation (“PWM”) signal generator which generates a PWM signal according to the frequency of the frequency signal outputted from the PLL unit, and a voltage generator which outputs a driving voltage obtained by modulating an input voltage in response to the PWM signal to a voltage output terminal.

公开(公告)号：US20210335166A1

公开(公告)日：2021-10-28

申请号：US17181309

申请日：2021-02-22

Applicant: Samsung Display Co., Ltd.

Inventor： Sung Soo CHOI ,  Dae-Sik LEE ,  Ji Youn SEO ,  Gwang Soo AHN ,  Jong Jae LEE ,  Geun Hyuk CHOI

IPC: G09G3/00 ,  G09G3/20

Abstract: A power voltage generator includes a voltage sensor and a power controller. The voltage sensor is configured to sense a first voltage in a first charge sharing period of a gate clock signal and a second voltage in a second charge sharing period of the gate clock signal. The power breaker is configured to disconnect a power based on the first voltage and the second voltage.

公开(公告)号：US20210248939A1

公开(公告)日：2021-08-12

申请号：US17069254

申请日：2020-10-13

Applicant: Samsung Display Co., Ltd.

Inventor： Gwang Soo AHN ,  Sung Soo CHOI ,  Jong Jae LEE

IPC: G09G3/00 ,  G09G3/20

Abstract: A display apparatus includes a display panel, a timing controller and a power management integrated circuit (PMIC). The timing controller is to control an operation of the display panel and to store a plurality of fault patterns to be displayed on the display panel to represent that a plurality of defective phenomena have occurred. The PMIC is to supply a first power supply voltage to the timing controller and to monitor whether the plurality of defective phenomena have occurred. When a first defective phenomenon among the plurality of defective phenomena is sensed, the PMIC is to store first fault data and to shut down the display panel. When the first defective phenomenon is sensed, the timing controller is to control the display panel to display a first fault pattern corresponding to the first defective phenomenon among the plurality of fault patterns before the display panel is shut down.

公开(公告)号：US20200090576A1

公开(公告)日：2020-03-19

申请号：US16691836

申请日：2019-11-22

Applicant: Samsung Display Co., Ltd.

Inventor： Woon Yong LIM ,  Sung Soo CHOI ,  Ki Hyun PYUN

IPC: G09G3/20

Abstract: A converter includes a phase locked loop (“PLL”) unit which outputs a first frequency signal having a first frequency during a first period of one frame and to output a second frequency signal modulated to have a frequency corresponding to a pattern of an image signal during a second period other than the first period, a pulse width modulation (“PWM”) signal generator which generates a PWM signal according to the frequency of the frequency signal outputted from the PLL unit, and a voltage generator which outputs a driving voltage obtained by modulating an input voltage in response to the PWM signal to a voltage output terminal.