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US 12,001,019 B2Granted
Display apparatus realizing a virtual image
AssigneeLG Display Co., Ltd.
InventorsJu-Seong Park, Myung-Soo Park
Life of this patent
Estimating the term…
Abstract
A display apparatus providing a virtual image to user is provided. The display apparatus may include a hologram optical element on a path of light emitted from a display panel. The display panel may emit light having different peak wavelength ranges. The reflection angle or the refraction angle recorded in the hologram optical element is different according to the peak wavelength range. Thus, the display apparatus may provide a plurality of virtual images having different focal lengths to the user without physical movement or mechanical operation of the display panel.
Claims18
A display apparatus, comprising:
- a display panel configured to emit light having a plurality of peak wavelength ranges, the display panel including a plurality of pixel areas on a substrate, each of the pixel areas including:
- a first sub-pixel that, in operation, emits first light having a first peak wavelength range;
- and
- a second sub-pixel that, in operation, emits second light having a second peak wavelength range different than the first peak wavelength range, the second sub-pixel being disposed spaced from the first sub-pixel in a second direction;
- a windshield spaced a first distance from both the first sub-pixel and the second sub-pixel of each pixel area along a first direction that is transverse to the second direction, both the first and second sub-pixels having the same length optical path to the windshield;
- a hologram optical element overlying the windshield and disposed in a direct path between that of the first light and the second light emitted from the display panel and the windshield, the path being along the first direction, the light emitted directly from the display panel impinging directly on the hologram optical element;
- a first hologram optical layer within the hologram optical element, the first hologram optical layer refracting light of the first peak wavelength to have a first focal length at a first focal point on the windshield;
- and
- a second hologram optical layer within the hologram optical element, the second hologram optical layer refracting light of the second peak wavelength to have a second focal length at a second focal point on the windshield;
- wherein the hologram optical element refracts the first lights and the second lights at different refraction angles based on the first peak wavelength and the second peak wavelength to create a first virtual image on the windshield realized by the first lights and a second virtual image on the windshield realized by the second lights, the first virtual image and the second virtual image having different focal lengths from each other and appearing to be at different distance as observed by a user, and
- wherein the first and second virtual images are different virtual images that display different information at different focal lengths at a same time.
8 more elements
A display apparatus, comprising:
- a hologram optical element on a wind-shield;
- and
- a display panel emitting first light to display a first image and second light to display a second image toward the hologram optical element in a first direction, the display panel including a plurality of pixel areas on a substrate, each of the plurality of pixel areas including:
- a first sub-pixel in which the first light is emitted;
- a second sub-pixel in which the second light is emitted, the second sub-pixel being disposed spaced from the first sub-pixel in a second direction transverse the first direction;
- a first hologram optical layer within the hologram optical element, the first hologram optical layer refracting light of a first peak wavelength to have a first focal length at a first focal point on the wind-shield;
- and
- a second hologram optical layer within the hologram optical element, the second hologram optical layer refracting light of a second peak wavelength to have a second focal length at a second focal point on the wind-shield;
- wherein the wind-shield is spaced a first distance from both the first sub-pixel and the second sub-pixel of each pixel area along the first direction, both the first and second sub-pixels having the same length optical path in a direct line to the wind-shield;
- wherein the hologram optical element is overlying the wind-shield and disposed on a direct path between that of the first light and the second light emitted from the display panel and the wind-shield, the path being along the first direction;
- wherein the hologram optical element refracts the first light and the second light at different refraction angles to cause the second image on the wind-shield to have a different focal length from the first image on the wind-shield and appear to be at different distances as observed by a user,
- wherein the first and second images are different images that display different information at the different distances at a same time.
9 more elements
A display apparatus, comprising:
- a display panel including a plurality of pixel areas on a substrate, each of the plurality of pixel areas including a first sub-pixel emitting a first light displaying a first color and a second sub-pixel emitting a second light displaying a second color different than the first color, the first sub-pixel and the second sub-pixel being arranged side by side in a second direction;
- a windshield spaced a first distance from both the first sub-pixel and the second sub-pixel along a first direction that is transverse to the second direction, both the first and second sub-pixels having the same length optical path to the windshield;
- a hologram optical element overlying the windshield and disposed in a direct path between that of the first light and the second light emitted from the display panel and the windshield, the path being along the first direction, a first hologram optical layer within the hologram optical element, the first hologram optical layer refracting light of a first color to have a first focal length at first focal point on the windshield;
- and
- a second hologram optical layer within the hologram optical element, the second hologram optical layer refracting light of a second color to have a second focal length at second focal point on the windshield;
- wherein the hologram optical element refracts the first light and the second light at different refraction angles to create a first virtual image on the windshield realized by the first light and a second virtual image on the windshield realized by the second light, wherein a focal length of the first virtual image is different from a focal length of the second virtual image and the first and second virtual images appear to be at different distances as observed by a user, and
- wherein the first and second virtual images are different images that display different information at different focal lengths at a same time.
4 more elements
Dependencies are inferred from the claim text.