公开(公告)号：US20200168140A1

公开(公告)日：2020-05-28

申请号：US16677757

申请日：2019-11-08

Applicant: AU Optronics Corporation

Inventor： Yi-Chiung CHEN ,  Hsiang-Sheng CHANG ,  Mao-Hsun CHENG

IPC: G09G3/00 ,  G09G3/3266 ,  G09G3/3291

Abstract: A display panel has an active area and a peripheral area. The display panel includes N gate lines, N shift register, a plurality of pixel circuits, a switch circuit and a plurality of test pads. The switch circuit is arranged in the peripheral area, and electrically coupled to the N shift register, the N gate lines and the pixel circuits. The switch circuit is configured to receive a control signal and an enable signal, and pull down voltage level of N gate lines to a low voltage level. The test pads circuit are arranged in the peripheral area, and electrically coupled to the switch circuit and the pixel circuits. The test pads are configured to provide the control signal, the enable signal, a data signal and a reference signal.

公开(公告)号：US20200243001A1

公开(公告)日：2020-07-30

申请号：US16734455

申请日：2020-01-06

Applicant: AU Optronics Corporation

Inventor： Yi-Chiung CHEN ,  Mao-Hsun CHENG

IPC: G09G3/32

Abstract: A pixel circuit is disclosed herein, which includes a first switch, a capacitor, a driving transistor, and a light-emitting diode (LED). The first switch outputs voltage data in response to a scan signal. A first terminal of the capacitor and the first switch are coupled to a node. A second terminal of the capacitor receives a reference signal. The driving transistor is coupled to the node, and configured to output current according to a voltage stored in the node. The LED is coupled to the driving transistor, and emits light according to the current. The reference voltage is different during different operation periods. The driving transistor outputs a first current according to the voltage data and the voltage difference, and outputs a second current according to the voltage data during different operation periods, such that the LED emits a first light and a second light during different operation periods.