Projection device and driving method thereof
A projection device and projection display technology, applied in projection devices, televisions, optics, etc., can solve problems such as black screen impurity
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Embodiment 1
[0036] This embodiment provides a projection device, which is a reflective projection device 11 . Such as figure 2 As shown, the projection device includes an image source 100 and a transflective element 200 .
[0037] For example, if figure 2 As shown, image source 100 is configured to generate image light 102 and emit image light 102, image light 102 may include bright state area image light 01 and dark state area image light 02 (also as Figure 1b shown). The transflective element 200 is disposed on the light output side of the image source 100 and is configured to reflect the image light 102 emitted from the image source 100 for image display. For example, if figure 2 As shown in the light path diagram of , the transflective element 200 is configured to reflect the image light 01 in the bright state region for projection display, and configured to transmit the image light 02 in the dark state region for no projection display.
[0038] The transflective element 200 ...
Embodiment 2
[0063] This embodiment provides a projection device, such as Figure 8 As shown, the difference from the first embodiment is that the projection device of this embodiment is a direct projection projection device 12 . In the direct projection projection device 12, the transflective unit in the transmissive state in the transflective element 200 is configured to transmit the image light irradiated thereon for transmissive projection display, and the transflective unit in the reflective state in the transflective element 200 configured to reflect image light impinging on it. That is, the transflective unit is configured to reflect image light irradiated thereon when in a reflective state, or the transflective unit is configured to transmit image light irradiated thereon when in a transmissive state.
[0064] The transflective element 200 is configured to transmit the image light 102 emitted from the image source 100 for image display. For example, if Figure 8 As shown in the ...
Embodiment 3
[0076] This embodiment provides a method for driving a projection device, including:
[0077] Driving multiple pixels of the display unit so that each pixel is in an on state or in an off state;
[0078] Driving multiple transflective units of the transflective element, so that each transflective unit is in a reflective state or a transmissive state;
[0079] Wherein, the multiple transflective units of the transflective element are arranged on the light-emitting optical paths of the multiple pixels of the display unit;
[0080] When the driving pixel is in the off state, driving the transflective unit corresponding to the pixel is in the transmissive state; or,
[0081] When the driving pixel is in the off state, the transflective unit corresponding to the pixel is driven in the reflective state.
[0082]For example, the multiple transflective units of the transflective element are in one-to-one correspondence with the multiple pixels of the display unit.
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