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US 10,257,508 B2Granted
Light source device, display apparatus including the same, display method using the same
AssigneeSamsung Electronics Co., Ltd.
InventorsYoonsun Choi, Jinho Lee, Dong Kyung Nam, Kyuhwan Choi
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Abstract
A light source device may include a first light source, a second light source, a light guide plate (LGP) configured to guide a light incident from at least one of the first light source and the second light source, an optical film configured to form a distribution of directional light by controlling a progress path of a light output from the LGP, and a controller configured to control activation of at least one of the first light source and the second light source in order to control the distribution of directional light.
Claims30
A display device comprising:
- a first light source;
- a second light source;
- a light guide plate (LGP) configured to guide light incident from at least one of the first light source and the second light source;
- an optical film configured to form a distribution of directional light by controlling a progress path of light output from the LGP;
- a controller configured to control activation of at least one of the first light source and the second light source;
- and
- a three-dimensional (3D) optical element configured to form a 3D light distribution based on the directional light, the 3D optical element is a parallax barrier configured to form a 3D point in time based on the directional light being directed toward a slot of the parallax barrier,
- wherein, based on the first light source being activated, a distribution of first directional light is formed by the LGP and the optical film, and a 3D image toward a first direction is formed based on the distribution of the first directional light and the 3D optical element, wherein the 3D optical element forms the 3D image toward the first direction based on the distribution of the first directional light being directed toward the slot,
- wherein, based on the second light source being activated, a distribution of second directional light is formed by the LGP and the optical film, and a 3D image toward a second direction is formed based on the distribution of the second directional light and the 3D optical element, wherein the 3D optical element forms the 3D image toward the second direction based on the distribution of the second directional light being directed toward the slot.
6 more elements
A display device comprising:
- a first light source;
- a second light source;
- a light guide plate (LGP) configured to form a light distribution of a line-type light pattern based on light incident from at least one of the first light source and the second light source;
- a three-dimensional (3D) optical element configured to form a 3D light distribution based on the light distribution, the 3D optical element is a parallax barrier configured to form a 3D point in time based on the light distribution being directed toward a slot of the parallax barrier;
- and
- a controller configured to control a directivity of the line-type light pattern by controlling activation of at least one of the first light source and the second light source,
- wherein, based on the first light source being activated, a distribution of a first directional line-type light pattern is formed by the LGP and a 3D image toward a first direction is formed based on the distribution of the first directional line-type light pattern, wherein the 3D optical element forms the 3D image toward the first direction based on the distribution of the first directional line-type light pattern being directed toward the slot,
- wherein, based on the second light source being activated, a distribution of a second directional line-type light pattern is formed by the LGP and a 3D image toward a second direction is formed based on the distribution of the second directional line-type light pattern, wherein the 3D optical element forms the 3D image toward the second direction based on the distribution of the second directional line-type light pattern being directed toward the slot.
5 more elements
A display device comprising:
- a camera configured to detect at least one viewer;
- a light source device configured to form a distribution of directional light;
- a display panel configured to output an image based on the distribution of directional light;
- and
- a controller configured to selectively activate light sources in the light source device based on a position of the at least one viewer,
- wherein the light source device includes
- a first light source,
- a second light source,
- a light guide plate (LGP) configured to guide light incident from at least one of the first light source and the second light source,
- an optical film configured to form the distribution of directional light by controlling a progress path of light output from the LGP, and
- a three-dimensional (3D) optical element configured to form a 3D light distribution based on the directional light, the 3D optical element is a parallax barrier configured to form a 3D point in time based on the directional light being directed toward a slot of the parallax barrier,
- wherein, based on the first light source being activated, a distribution of first directional light is formed by the LGP and the optical film, and a 3D image toward a first direction is formed based on the distribution of the first directional light being directed toward the slot of the parallax barrier,
- wherein, based on the second light source being activated, a distribution of second directional light is formed by the LGP and the optical film, and a 3D image toward a second direction is formed based on the distribution of the second directional light being directed toward the slot of the parallax barrier.
10 more elements
A display method comprising:
- detecting viewers using a camera;
- forming a distribution of first directional light toward a first viewer from among the viewers;
- outputting a 3D image based on the distribution of first directional light;
- forming a distribution of second directional light toward a second viewer from among the viewers;
- and
- outputting a 3D image based on the distribution of second directional light,
- wherein, based on a first light source of a display device being activated, the distribution of the first directional light is formed by a light guide plate (LGP) and an optical film of the display device and the 3D image is formed toward a first direction by a 3D optical element based on the distribution of the first directional light, wherein the 3D optical element is a parallax barrier configured to form a 3D point in time based on directional light being directed toward a slot of the parallax barrier, and wherein the 3D optical element forms the 3D image toward the first direction based on the distribution of the first directional light being directed toward the slot,
- wherein, based on a second light source of the display device being activated, the distribution of the second directional light is formed by the light guide plate (LGP) and the optical film of the display device and the 3D image is formed toward a second direction by the 3D optical element based on the distribution of the second directional light, wherein the 3D optical element forms the 3D image toward the second direction based on the distribution of the second directional light being directed toward the slot.
5 more elements
A device comprising:
- a processor;
- and
- a memory including computer readable instructions, which when executed by the processor, cause the processor to,
- determine, from a captured image, a number of viewers and associated positions of the viewers with respect to a display,
- determine a frame rate for the display based on the number of viewers, and
- selectively activate, for each image frame within a plurality of image frames of an image signal, at least a first light source and a second light source based on the associated positions,
- wherein, based on the first light source being activated, a distribution of first directional light is formed by a light guide plate (LGP) and an optical film of the device, and a 3D image toward a first direction is formed based on the distribution of the first directional light and a 3D optical element of the device, wherein the 3D optical element is a parallax barrier configured to form a 3D point in time based on directional light being directed toward a slot of the parallax barrier, and wherein the 3D optical element forms the 3D image toward the first direction based on the distribution of the first directional light being directed toward the slot,
- wherein, based on the second light source being activated, a distribution of second directional light is formed by the LGP and the optical film, and a 3D image toward a second direction is formed based on the distribution of the second directional light and the 3D optical element, wherein the 3D optical element forms the 3D image toward the second direction based on the distribution of the second directional light being directed toward the slot.
5 more elements
Dependencies are inferred from the claim text.