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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.
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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.
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