Holographic display device and display method thereof
AssigneeBoe Technology Group Co., Ltd.
InventorsQian Wang, Gaolei Xue, Zhongxiao Li, Pengxia Liang
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Abstract
A holographic display device and a display method thereof. The holographic display device comprises a backlight module and two liquid crystal modules. The backlight module is used for providing coherent light; the two liquid crystal modules are located on the light exit side of the backlight module, and the two liquid crystal modules are stacked; one of the two liquid crystal modules is used for performing amplitude modulation on incident light, and the other one is used for performing phase modulation on incident light. In this way, the complex amplitude of exit light is adjusted, and the quality of a reconstructed image is improved.
Claims15
A holographic display device, comprising:
- a backlight module, configured to provide coherent light;
- a first liquid crystal module, located at a light-emitting side of the backlight module;
- and
- a second liquid crystal module located at a side of the first liquid crystal module facing away from the backlight module;
- wherein the first liquid crystal module is configured for performing amplitude modulation on incident light, and the second liquid crystal module is configured for performing phase modulation on the incident light;
- the first liquid crystal module and the second liquid crystal module comprise:
- a first substrate;
- a second substrate, disposed opposite to the first substrate;
- a third substrate, located at a side of the second substrate facing away from the first substrate;
- a first liquid crystal layer, located between the first substrate and the second substrate;
- a second liquid crystal layer, located between the second substrate and the third substrate;
- a first polarization layer, located at a side of the first liquid crystal module facing away from the second liquid crystal module;
- a second polarization layer, located at a side of the second liquid crystal module facing away from the first liquid crystal module;
- a first orientation layer and a second orientation layer located at two sides of the first liquid crystal layer, respectively;
- and
- a third orientation layer and a fourth orientation layer located at two sides of the second liquid crystal layer, respectively;
- wherein a polarization direction of the first polarization layer is perpendicular to a polarization direction of the second polarization layer;
- an orientation of first orientation layer is perpendicular to an orientation of the second orientation layer, and an orientation of the third orientation layer is parallel to an orientation of the fourth orientation layer;
- the orientation of the first orientation layer is parallel to the polarization direction of the first polarization layer;
- and
- the orientation of the fourth orientation layer is parallel to the polarization direction of the second polarization layer.
A display method of a holographic display device, comprising:
- receiving holographic data of an image to be displayed during holographic display;
- providing coherent light by a backlight module;
- and
- performing amplitude modulation and phase modulation on incident light by two liquid crystal modules respectively according to the holographic data to display a corresponding reconstructed image;
- wherein the two liquid crystal modules comprise a first substrate and a second substrate disposed opposite to each other, and a third substrate located at a side of the second substrate facing away from the first substrate;
- edges of same sides of the first substrate, the second substrate and the third substrate are provided with a positioning hole;
- and the substrates comprised in the two liquid crystal modules are aligned by:
- disposing a receiver at a side of the first substrate facing away from the second substrate, and disposing an emitter at a side of the third substrate facing away from the second substrate;
- controlling the emitter to emit laser light to the receiver through positioning holes of the first substrate, the second substrate and the third substrate;
- and
- completing an alignment operation for the substrates of the two liquid crystal modules in a case that a difference between an intensity of the laser light received by the receiver and an intensity of the laser light emitted by the emitter is less than a preset threshold.
Dependencies are inferred from the claim text.