公开(公告)号：US20220293040A1

公开(公告)日：2022-09-15

申请号：US17636118

申请日：2020-08-18

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Daniel RICHTER ,  Marcel SEVERIN

IPC: G09G3/32

Abstract: A control method includes A) determining intrinsic activation times of individual semiconductor emitters of a display device. The display device includes a plurality of light-emitting semiconductor emitters with different intrinsic activation times. The method also includes B) determining and storing in each case an activation delay and/or a turn-on current change for each individual one of the semiconductor emitters. The method further includes C) energizing the individual semiconductor emitters according to the previously determined activation delay and/or turn-on current change, so that in a display mode of the display device the semiconductor emitters have equally long starting times for a light emission.

公开(公告)号：US20220165192A1

公开(公告)日：2022-05-26

申请号：US17439165

申请日：2020-02-25

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Daniel RICHTER ,  Sven WEBER-RABSILBER ,  Marcel SEVERIN

IPC: G09G3/20

Abstract: A method for operating a visual display apparatus is specified. The apparatus comprises a first optoelectronic semiconductor component configured to emit electromagnetic radiation of a first wavelength and comprising a first intrinsic switch-on delay. The apparatus comprises a second optoelectronic semiconductor component configured to emit electromagnetic radiation of a second wavelength and comprising a second intrinsic switch-on delay. The second wavelength is different from the first wavelength. The first semiconductor component is operated with a first operating current according to a first actuation signal. The second semiconductor component is operated with a second operating current according to a second actuation signal. The first and/or the second actuation signal comprise a delay clock signal selected such that emissions of electromagnetic radiation from the first and second semiconductor components comprise a switch-on delay with respect to each other that is smaller than a difference of the first and second intrinsic switch-on delays.