公开(公告)号：US20210407380A1

公开(公告)日：2021-12-30

申请号：US17294556

申请日：2020-09-27

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Dongni LIU ,  Minghua XUAN ,  Qi QI ,  Jing LIU

IPC: G09G3/32

Abstract: A pixel driving circuit includes a driving control sub-circuit and a driving duration control sub-circuit. The driving control sub-circuit includes a first driving sub-circuit connected to a first node. The driving control sub-circuit is configured to be connected to an element to be driven. The driving control sub-circuit is configured to output a driving signal to drive the element to be driven to operate. The driving duration control sub-circuit includes a second driving sub-circuit connected to a second node. The driving duration control sub-circuit is configured to write a first voltage signal into the second node, write a third voltage signal into the second node, and transmit a second voltage signal to the first node in response to a voltage variation at the second node to stop the first driving sub-circuit from outputting the driving signal, so as to control an operating duration of the element to be driven.

公开(公告)号：US20180188442A1

公开(公告)日：2018-07-05

申请号：US15561174

申请日：2017-03-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jingquan WANG ,  Jing LIU

IPC: F21V8/00 ,  G02F1/1335

CPC classification number: G02B6/0041 ,  G02B6/00 ,  G02B6/0061 ,  G02B6/0065 ,  G02F1/133606

Abstract: A light guide element, a manufacturing method thereof and a backlight assembly are provided. The light guide element includes: a scattering structure, including a plurality of aerogel particles, wherein the scattering structure includes a light incident surface and a light-emitting surface and is configured to receive incident light incident into the light incident surface and emit the incident light from the light-emitting surface, and a particle size of the aerogel particle is set according to a color difference of the incident light.