公开(公告)号：US20190278419A1

公开(公告)日：2019-09-12

申请号：US16358728

申请日：2019-03-20

Applicant: SHANGHAI AVIC OPTO ELECTRONICS CO., LTD.

Inventor： Zhengyuan Huang ,  Xu Yang ,  Xupeng Wang ,  Zhi Zheng ,  Changchao Liu

IPC: G06F3/041 ,  H04M1/725

Abstract: A method and a system for reducing current noise of a touch terminal are provided. The method includes: determining that a user receives a voice call via an earpiece of the touch terminal, and controlling the touch terminal to switch from a first touch scan frequency to a second touch scan frequency, where the second touch scan frequency is less than the first touch scan frequency. As can be seen, if the user receives the voice call via the earpiece of the touch terminal, the touch terminal is controlled to switch from the first touch scan frequency to the second touch scan frequency, to effectively reduce the current noise heard by the user by decreasing the touch scan frequency of the touch terminal, so that the periodic current noise is outside a frequency band perceptible to a human ear, thereby improving user experience when receiving the voice call.

公开(公告)号：US10713987B2

公开(公告)日：2020-07-14

申请号：US15886839

申请日：2018-02-02

Applicant: SHANGHAI AVIC OPTO ELECTRONICS CO., LTD.

Inventor： Zhengyuan Huang ,  Shuquan Fan ,  Xupeng Wang ,  Shanrong Wang ,  Zhi Zheng

IPC: G09G3/20 ,  G06F3/048

Abstract: Provided are a display panel and a display device. The display panel includes a drive chip and a switching device, and the drive chip includes a digital interface inputting terminal, a positive driving voltage inputting terminal and a negative driving voltage inputting terminal, and the switching device includes a first switching inputting terminal, a second switching inputting terminal, a third switching inputting terminal, a switching control terminal, a first switching outputting terminal corresponding to the first switching inputting terminal, a second switching outputting terminal corresponding to the second switching inputting terminal and a third switching outputting terminal corresponding to the third switching inputting terminal. The first switching inputting terminal, the second switching inputting terminal, the third switching inputting terminal and the switching control terminal are configured to be electrically connected to a main circuit board. The first switching outputting terminal is electrically connected to the digital interface inputting terminal.

公开(公告)号：US11025764B2

公开(公告)日：2021-06-01

申请号：US16358728

申请日：2019-03-20

Applicant: SHANGHAI AVIC OPTO ELECTRONICS CO., LTD.

Inventor： Zhengyuan Huang ,  Xu Yang ,  Xupeng Wang ,  Zhi Zheng ,  Changchao Liu

IPC: G06F3/041 ,  H04M1/72454 ,  H04M1/72484 ,  H04M1/02 ,  H04M1/60 ,  G06F3/01 ,  H04M1/72466

Abstract: A method and a system for reducing current noise of a touch terminal are provided. The method includes: determining that a user receives a voice call via an earpiece of the touch terminal, and controlling the touch terminal to switch from a first touch scan frequency to a second touch scan frequency, where the second touch scan frequency is less than the first touch scan frequency. As can be seen, if the user receives the voice call via the earpiece of the touch terminal, the touch terminal is controlled to switch from the first touch scan frequency to the second touch scan frequency, to effectively reduce the current noise heard by the user by decreasing the touch scan frequency of the touch terminal, so that the periodic current noise is outside a frequency band perceptible to a human ear, thereby improving user experience when receiving the voice call.

公开(公告)号：US10325535B2

公开(公告)日：2019-06-18

申请号：US15421123

申请日：2017-01-31

Applicant: Shanghai AVIC OPTO Electronics Co., Ltd. ,  Tianma Micro-electronics Co., Ltd.

Inventor： Xu Yang ,  Nana Tian ,  Xupeng Wang ,  Zhiyong Ren ,  Xiaoyuan Ding ,  Zhengyuan Huang

IPC: G09G3/00 ,  G09G3/36 ,  G01R31/02

Abstract: A method for testing a display panel includes: applying a first level signal to a first sub-pixel and a third sub-pixel of a first pixel unit and applying a second level signal to a second sub-pixel of the first pixel unit; applying the second level signal to a first sub-pixel and a third sub-pixel of a second pixel unit and applying the first level signal to a second sub-pixel of the second pixel unit; and detecting a short circuit between adjacent sub-pixels. The first level signal has a voltage polarity opposite to a voltage polarity of the second level signal. Therefore, it is ensured that any two adjacent sub-pixels have opposite voltage polarities when the short circuit between adjacent sub-pixels of the display panel is detected. The method also provides improved testing abilities to detect an open circuit in a sub-pixel.