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Method and device for eliminating afterimage and storage medium

A technology for eliminating afterimages and panels, which is applied in the field of optical communications, can solve problems such as afterimages and inapplicability of switching screens, and achieve the effects of avoiding afterimages, avoiding afterimages, and eliminating aggregation problems

Active Publication Date: 2020-11-17
HUAWEI TECH CO LTD
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Problems solved by technology

However, LCOS technology still has a defect that cannot be ignored: when products using LCOS technology, such as wavelength selective switches (wavelength selective switch, WSS), work in one state for a long time, that is, the same wavelength is maintained in a certain direction for a long time At this time, the driving voltage of the liquid crystal alignment layer maintains a state for a long time. At this time, due to the characteristics of the liquid crystal molecules in the liquid crystal alignment layer, the product will have image sticking when switching screens.
[0004] However, for the application of LCOS technology, the impact of residual image belongs to the influence of the online status of the product. Therefore, the above-mentioned solution to eliminate the phenomenon of residual image after shutdown is not applicable to products using LCOS technology.

Method used

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  • Method and device for eliminating afterimage and storage medium
  • Method and device for eliminating afterimage and storage medium
  • Method and device for eliminating afterimage and storage medium

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Embodiment Construction

[0047] First, some terms involved in the embodiments of the present application are explained.

[0048] LCD display principle, LCD is a kind of passive display, which does not emit light by itself, mainly relying on the light emitting diode (LED) behind the screen to emit light. Such as figure 1 As shown, LCD uses the twist-nematic effect of liquid crystal molecules to deflect the liquid crystal molecules between the two liquid crystal alignment layers by controlling the driving voltage to change the light transmittance of the LED, thereby changing the brightness and contrast of the LCD. When the driving voltage is removed, the liquid crystal molecules resume their twisted structure. Such a liquid crystal alignment layer is placed between two polarizers, and the display form of the picture can be obtained by changing the relative position of the polarization.

[0049] When the liquid crystal cell contains ions, after a long period of time to display a picture, the free ions ...

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Abstract

The embodiment of the invention provides a method and device for eliminating afterimage and a storage medium, which are applied to an optical communication product or part comprising an LCOS panel andused for eliminating the afterimage generated by long-time fixation of a display picture of the LCOS panel. The method comprises the following steps: detecting that the LCOS panel is in a display state; and dynamically changing the driving voltage of the LCOS panel to dynamically adjust a picture corresponding to the LCOS panel, wherein the dynamically adjusted picture has the same display effectas the picture before dynamic adjustment. According to the embodiment of the invention, the afterimage phenomenon of a product using the LCOS technology during long-term work can be eliminated.

Description

technical field [0001] Embodiments of the present application relate to optical communication technologies, and in particular, to a method, device, and storage medium for eliminating afterimages. Background technique [0002] With the continuous development of optical communication technology, liquid crystal on silicon (LCOS) technology emerges accordingly. Among them, the LCOS technology, also known as silicon crystal light technology, liquid crystal on silicon technology, etc., is a technology that combines semiconductor technology and liquid crystal display (liquid crystal display, LCD). Because LCOS technology has the advantages of high resolution, low price, energy saving and environmental protection, etc., in the field of display technology, LCOS technology shows strong development potential. However, LCOS technology still has a defect that cannot be ignored: when products using LCOS technology, such as wavelength selective switches (wavelength selective switch, WSS),...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/3648G09G3/3696G09G2320/0257G09G3/36G02F1/133G09G3/3611
Inventor 陈昆蒋厚强陈军
Owner HUAWEI TECH CO LTD
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