Display device and control method thereof with brightness and transmittance control
AssigneeCanon Kabushiki Kaisha
InventorYoshihisa Furumoto
Life of this patent
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Abstract
Provided is a display device including: a first panel of which light transmittance is controlled; a second panel of which light transmittance is controlled, the second panel being disposed on the rear surface side of the first panel; a light emitting unit of which brightness is individually controlled for each divided area, the light emitting unit being disposed on the rear surface side of the second panel; a second panel control unit configured to control the transmittance of the second panel based on a brightness distribution of the light emitting unit so that the brightness of the transmitted light of the second panel becomes uniform; and a first panel control unit configured to control the transmittance of the first panel based on image data.
Claims15
A display device comprising:
- a light emitting unit having a plurality of light emitting areas, light emitting of each of the plurality of light emitting areas being individually controllable;
- a first display panel configured to transmit irradiated light from the light emitting unit;
- a second display panel configured to transmit light transmitted by the first display panel and thereby to display an image in a screen;
- one or more processors;
- and
- a memory in communication with the one or more processors, the memory storing a program which, when executed by the one or more processors, cause the one or more processors to:
- acquire image data;
- control light emitting of each of the plurality of light emitting areas with an emission brightness determined based on a pixel value of image data area corresponding to each of the plurality of emission areas;
- control a transmittance of the first display panel based on an inverse of a brightness distribution of the irradiated light from the light emitting unit;
- and
- control a transmittance of the second display panel based on the image data.
A method of controlling a display device,
- the display device including:
- a light emitting unit having a plurality of light emitting areas, light emitting of each of the plurality of light emitting areas being individually controllable;
- a first display panel configured to transmit irradiated light from the light emitting unit;
- and
- a second display panel configured to transmit light transmitted by the first display panel and thereby to display an image in a screen,
- the method comprising steps of:
- acquiring image data;
- controlling light emitting of each of the plurality of light emitting areas with an emission brightness determined based on a pixel value of image data area corresponding to each of the plurality of emission areas;
- controlling a transmittance of the first display panel based on an inverse of a brightness distribution of the irradiated light from the light emitting unit;
- and
- controlling a transmittance of the second display panel based on the image data.
A non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a computer, causes the computer, which control a display device including:
- a light emitting unit having a plurality of light emitting areas, light emitting of each of the plurality of light emitting areas being individually controllable;
- a first display panel configured to transmit irradiated light from the light emitting unit;
- and
- a second display panel configured to transmit light transmitted by the first display panel and thereby to display an image in a screen, to perform each of the steps of:
- acquiring image data;
- controlling light emitting of each of the plurality of light emitting areas with an emission brightness determined based on a pixel value of image data area corresponding to each of the plurality of emission areas;
- controlling a transmittance of the first display panel based on an inverse of a brightness distribution of the irradiated light from the light emitting unit;
- and
- controlling a transmittance of the second display panel based on the image data.
Dependencies are inferred from the claim text.