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US 12,147,139 B2Granted
Display device having wide viewing angle in sharing mode
AssigneeWuhan China Star Optoelectronics Technology Co., Ltd.
InventorsQian Deng, Wei Cheng
Life of this patent
Estimating the term…
Abstract
The present application provides a display device, when the display device is in a first display mode, a transmittance of first optical units to light is less than a transmittance of second optical units to light, so that diffracted light is emitted due to a phenomenon that apertures in a diffraction panel are alternating between light and dark. After the diffracted light emitted by the diffraction panel passes through a display panel, the display device has a wide viewing angle in the first display mode.
Claims17
A display device, wherein the display device comprises a diffraction panel and a display panel, wherein the diffraction panel is located on a light incident side of the display panel, and the diffraction panel comprises:
- a first substrate;
- a second substrate disposed opposite to the first substrate;
- a plurality of first optical units disposed between the first substrate and the second substrate;
- and
- a plurality of second optical units disposed between the first substrate and the second substrate and disposed alternately with the plurality of first optical units in a direction perpendicular to a thickness direction of the diffraction panel;
- wherein a transmittance of the first optical units to light is less than a transmittance of the second optical units to light when the display device is in a first display mode, and
- when the display device is in a second display mode, the transmittance of the first optical units to light is equal to the transmittance of the second optical units to light, and a visual viewing angle in second display mode is less than a visual viewing angle in the first display mode;
- wherein the first optical units comprise a plurality of liquid crystal molecules and optical elements, and the second optical units comprise a plurality of the liquid crystal molecules,
- when the display device is in the first display mode, a long axis of the plurality of the liquid crystal molecules in the first optical units is disposed in a first direction, and a refractive index of the plurality of liquid crystal molecules in the first optical units in the thickness direction of the diffraction panel is different from a refractive index of the optical elements, and a long axis of the plurality of liquid crystal molecules in the second optical units is disposed in the first direction, or
- each of the first optical units comprises a plurality of liquid crystal molecules and at least one optical element, and each of the second optical units comprises a plurality of liquid crystal molecules and at least one optical element,
- when the display device is in the first display mode, a long axis of the plurality of liquid crystal molecules in the first optical units is disposed in a first direction, a refractive index of the plurality of liquid crystal molecules in the first optical units in the thickness direction of the diffraction panel is different from a refractive index of the optical elements in the first optical units, a long axis of the plurality of liquid crystal molecules in the second optical units is disposed in a second direction, a refractive index of the plurality of liquid crystal molecules in the second optical units in the thickness direction of the diffraction panel is same as a refractive index of the optical elements in the second optical units, and the second direction is different from the first direction.
8 more elements
A display device, wherein the display device comprises a diffraction panel and a display panel, wherein the diffraction panel is located on a light incident side of the display panel, and the diffraction panel comprises:
- a first substrate;
- a second substrate disposed opposite to the first substrate;
- a plurality of first optical units disposed between the first substrate and the second substrate;
- and
- a plurality of second optical units disposed between the first substrate and the second substrate and disposed alternately with the plurality of first optical units in a direction perpendicular to a thickness direction of the diffraction panel;
- wherein a transmittance of the first optical units to light is less than a transmittance of the second optical units to light when the display device is in a first display mode, and
- when the display device is in a second display mode, the transmittance of the first optical units to light is equal to the transmittance of the second optical units to light, and a visual viewing angle in second display mode is less than a visual viewing angle in the first display mode;
- wherein each of the first optical units comprises a plurality of liquid crystal molecules and at least one optical element, and each of the second optical units comprises a plurality of liquid crystal molecules and at least one optical element;
- when the display device is in the first display mode, a long axis of the plurality of liquid crystal molecules in the first optical units is disposed in a first direction, a refractive index of the plurality of liquid crystal molecules in the first optical units in the thickness direction of the diffraction panel is different from a refractive index of the optical elements in the first optical units, a long axis of the plurality of liquid crystal molecules in the second optical units is disposed in a second direction, a refractive index of the plurality of liquid crystal molecules in the second optical units in the thickness direction of the diffraction panel is same as a refractive index of the optical elements in the second optical units, and the second direction is different from the first direction;
- and
- when the display device is in the second display mode, both the long axis of the plurality of liquid crystal molecules in the first optical units and the long axis of the plurality of liquid crystal molecules in the second optical units are disposed in the second direction, and the refractive index of the plurality of liquid crystal molecules in the first optical units in the thickness direction of the diffraction panel is same as the refractive index of the optical elements in the first optical units, and the refractive index of the plurality of liquid crystal molecules in the second optical units in the thickness direction of the diffraction panel is same as the refractive index of the optical elements in the second optical units.
8 more elements
A display device, wherein the display device comprises a diffraction panel, a display panel, and a dimming panel disposed between the diffraction panel and the display panel, wherein the diffraction panel is located on a light incident side of the display panel, and the diffraction panel comprises:
- a first substrate;
- a second substrate disposed opposite to the first substrate;
- a plurality of first optical units disposed between the first substrate and the second substrate;
- and
- a plurality of second optical units disposed between the first substrate and the second substrate and disposed alternately with the plurality of first optical units in a direction perpendicular to a thickness direction of the diffraction panel;
- wherein a transmittance of the first optical units to light is less than a transmittance of the second optical units to light when the display device is in a first display mode, and
- when the display device is in a second display mode, the transmittance of the first optical units to light is equal to the transmittance of the second optical units to light, and a visual viewing angle in second display mode is less than a visual viewing angle in the first display mode;
- wherein when the display device is in the first display mode, the dimming panel is in a first state, and the dimming panel in the first state scatters light emitted from the diffraction panel, and
- when the display device is in the second display mode, the dimming panel is in a second state, and the second state is a transparent state.
6 more elements
Dependencies are inferred from the claim text.