公开(公告)号：US20200074921A1

公开(公告)日：2020-03-05

申请号：US16614709

申请日：2019-04-16

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Kuanjun PENG ,  Chengchung YANG ,  Zhiqiang XU

IPC: G09G3/3208

Abstract: A method of adjusting display brightness, a light-emission control circuit and a display device are provided. A method of adjusting display brightness is applied to an light-emission control circuit, where the light-emission control circuit is configured to generate an light-emission control signal configured to control a light-emission of a display device. The method includes: adjusting, in the case that a display brightness of the display device is not within a predetermined brightness range, a duty ratio of the light-emission control signal, to enable the display brightness of the display device to fall into the predetermined brightness range.

公开(公告)号：US20200033618A1

公开(公告)日：2020-01-30

申请号：US16442975

申请日：2019-06-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaolong LI ,  Wei QIN ,  Kuanjun PENG ,  Xueling GAO ,  Fangzhen ZHANG ,  Jintao PENG ,  Jinqian WANG ,  Miaomiao YANG ,  Shuang SUN ,  Chunfang ZHANG ,  Shengnan LI

IPC: G02B27/22 ,  G02B5/124 ,  G02B27/26

Abstract: A semi-transparent semi-retroreflective film and an air display device are provided. The air display device includes: a first polarizer and a second polarizer assembled with each other to form a cell; a semi-transparent semi-reflective structure and a semi-transparent semi-retroreflective film disposed between the first polarizer and the second polarizer; a first ¼ wave plate disposed at a side of the air display device adjacent to the first polarizer; and a second ¼ wave plate disposed between the semi-transparent semi-reflective structure and the semi-transparent semi-retroreflective film. The air display device is configured such that polarized light incident from the first polarizer, after being processed by an internal optical path of the air display device, exits from the second polarizer to form an air image at a side of the air display device away from the first polarizer.

公开(公告)号：US20190333447A1

公开(公告)日：2019-10-31

申请号：US16251903

申请日：2019-01-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chengchung YANG ,  Kuanjun PENG ,  Wei QIN ,  Zhiqiang XU ,  Yan WEI

IPC: G09G3/3233

Abstract: A display method includes: determining whether there is a dynamic part in a current frame of picture, according to image data of a previous frame of picture and the current frame of picture; in a case where there is no dynamic part in the current frame of picture, in a display stage of the current frame of picture, providing a first light emitting control signal being always at an effective electric level state to each of pixel units of a display panel; in a case where there is a dynamic part in the current frame of picture, in the display stage of the current frame of picture, providing a second light emitting control signal, including a part at an effective electric level state and a part at a non-effective electric level state, to pixel units corresponding to at least a part of the dynamic part.

公开(公告)号：US20190073955A1

公开(公告)日：2019-03-07

申请号：US15982408

申请日：2018-05-17

Applicant: Boe Technology Group Co., Ltd.

Inventor： Xiangxiang Zou ,  Cheng Chung YANG ,  Yinglong HUANG ,  Kuanjun PENG

IPC: G09G3/3258 ,  G09G3/3266 ,  H01L27/32

Abstract: A pixel driving circuit and a driving method thereof, and a display device. The pixel driving circuit includes a light-emitting driving circuit, a light-emitting component and a gate-source voltage adjustment circuit. A control end, a first end and a second end of the light-emitting driving circuit are electrically connected with a first node, a second node and the light-emitting component respectively; the gate-source voltage adjustment circuit is electrically connected with at least one of the first node and the second node, the gate-source voltage adjustment circuit is also electrically connected with an adjustment voltage terminal, and the gate-source voltage adjustment circuit is configured to adjust at least one of a voltage of the first node and a voltage of the second node, so as to increase a modulus value of a voltage difference between the control end and the first end of the light-emitting driving circuit.