公开(公告)号：US11151944B2

公开(公告)日：2021-10-19

申请号：US16802578

申请日：2020-02-27

Applicant: Novatek Microelectronics Corp.

Inventor： Yung-Yu Hsieh ,  Tse-Yuan Chen ,  Jen-Hao Liao ,  Chun-Hsiao Teng ,  Chia-Wei Chang

IPC: G09G3/3266 ,  G09G3/3291

Abstract: A driving circuit, a display apparatus and a driving method thereof are provided. The display panel is divided into a plurality of regions including a first region having a rectangular form and a second region having a free form. The driving circuit generates a plurality of control clocks having a first duty cycle during a first period and a second duty cycle different from the first duty cycle during a second period, or having a first phase shift during the first period and a second phase shift different from the first phase shift during the second period, or having a first driving capability during the first period and a second driving capability different from the first driving capability during the second period. Wherein, the control clocks are configured to be transmitted to a gate driving circuit disposed on the display panel for generating a first plurality of scan signals controlling the first region and a second plurality of scan signals controlling the second region according to the control clocks, so as to reduce a luminance difference between the first region and the second region.

公开(公告)号：US20200273409A1

公开(公告)日：2020-08-27

申请号：US16802578

申请日：2020-02-27

Applicant: Novatek Microelectronics Corp.

Inventor： Yung-Yu Hsieh ,  Tse-Yuan Chen ,  Jen-Hao Liao ,  Chun-Hsiao Teng ,  Chia-Wei Chang

IPC: G09G3/3266 ,  G09G3/3291

Abstract: A driving circuit, a display apparatus and a driving method thereof are provided. The display panel is divided into a plurality of regions including a first region having a rectangular form and a second region having a free form. The driving circuit generates a plurality of control clocks having a first duty cycle during a first period and a second duty cycle different from the first duty cycle during a second period, or having a first phase shift during the first period and a second phase shift different from the first phase shift during the second period, or having a first driving capability during the first period and a second driving capability different from the first driving capability during the second period. Wherein, the control clocks are configured to be transmitted to a gate driving circuit disposed on the display panel for generating a first plurality of scan signals controlling the first region and a second plurality of scan signals controlling the second region according to the control clocks, so as to reduce a luminance difference between the first region and the second region.

公开(公告)号：US11062653B2

公开(公告)日：2021-07-13

申请号：US16167537

申请日：2018-10-23

Applicant: Novatek Microelectronics Corp.

Inventor： Tse-Yuan Chen ,  Jung-Hsuan Sung ,  Chien-Yu Chen

IPC: G09G3/3258 ,  H01L51/52

Abstract: A display apparatus and an operation method for a display panel thereof are provided. The display apparatus includes a display panel and a voltage supply circuit. The display panel includes a pixel circuit and a common voltage line. The pixel circuit includes an organic light emitting diode (OLED), wherein a cathode of the OLED is coupled to the common voltage line. The voltage supply circuit is coupled to the common voltage line of the display panel. The voltage supply circuit supplies a common voltage to the common voltage line during a normal operation period. The voltage supply circuit supplies a reverse bias voltage higher than the common voltage to the common voltage line during a recovery period to reversely bias the OLED.