Adaptive resolution for multi-view display system and method thereof
An apparatus includes a backlight, a color filter disposed in front of the backlight along a viewing direction, wherein the color filter includes a plurality of pixels repeating at a first spacing along a first axis. The apparatus further includes a lenticular layer disposed in front of the backlight, the lenticular layer including a section of material having a first index of refraction, a first, substantially flat side, and a second side defining a lenticularly patterned cross section along the first axis, the lenticularly patterned cross section including lens elements repeating at a second spacing and directing light originating from the backlight in two or more directions.
1. An apparatus, comprising:
a backlight;
a color filter disposed in front of the backlight along a viewing direction, the color filter comprising a plurality of pixels repeating at a first spacing along an axis;
a lenticular layer disposed in front of the backlight, the lenticular layer comprising (i) a section of material having a first index of refraction, (ii) a first substantially flat side, and (iii) a second side defining a lenticularly-patterned cross-section along the axis, the lenticularly-patterned cross-section comprising lens elements repeating at a second spacing and configured to direct light originating from the backlight in two or more directions; and
a cover layer comprising (i) a first side contacting the lenticular layer along the second side of the lenticular layer and (ii) a second side, the second side of the cover layer being substantially flat and parallel with the first side of the lenticular layer, the cover layer having a second index of refraction, wherein the lenticular layer has a variable index of refraction, the variable index of refraction covering a range of values which includes the first index of refraction and the second index of refraction,
wherein the lenticular layer further comprises a plurality of particles in a fluid medium, each particle having an index of refraction equal to the index of refraction of the cover layer, and
wherein the particles are configurable to move within the fluid medium to fully fill in the lenticularly-patterned cross-section of the lenticular layer at a depth sufficient to form a substantially continuous surface of reconfigurable particles within the lenticular layer and provide a layer of fluid medium between the first side of the lenticular layer and the substantially continuous surface of reconfigurable particles.
2. The apparatus of claim 1 , wherein a value of the index of refraction of the lenticular layer has a higher value at a first point on the axis than at a second point.
3. A method of providing a display, the method comprising:
at a display apparatus, the display apparatus comprising (i) a backlight, (ii) a color filter disposed in front of the backlight along a viewing direction, the color filter comprising a plurality of pixels repeating at a first spacing along an axis, (iii) a lenticular layer disposed in front of the backlight, the lenticular layer comprising (a) a first substantially flat side, (b) a second side defining a lenticularly-patterned cross-section along the axis, the lenticularly-patterned cross-section comprising lens elements repeating at a second spacing and directing light originating from the backlight in two or more directions, and (c) a plurality of particles in a fluid medium, each particle having an index of refraction equal to a first index of refraction, the fluid medium having a second index of refraction, wherein the lenticular layer has an adjustable index of refraction covering a range of values which includes the first index of refraction and the second index of refraction, and (iv) a cover layer comprising a first side contacting the lenticular layer along the second side of the lenticular layer and a second side, the second side of the cover layer being substantially flat and parallel with the first side of the lenticular layer, the cover layer being formed of a material having the second index of refraction, adjusting the index of refraction of the lenticular layer by moving the particles in the fluid medium towards a curved interface between the lenticular layer and the cover layer to provide a directional display; and
adjusting the index of refraction of the lenticular layer to provide a single display by moving the particles away from the curved interface between the lenticular layer and the cover layer,
wherein, when providing the directional display, the particles fully fill in the lenticularly-patterned cross-section of the lenticular layer at a depth sufficient to form a substantially continuous surface of reconfigurable particles within the lenticular layer and provide a layer of fluid medium between the first side of the lenticular layer and the substantially continuous surface of reconfigurable particles.
4. The method of claim 3 , further comprising:
adjusting the index of refraction of the lenticular layer within a first portion of the lenticular layer to create a first region providing the directional display; and
adjusting the index of refraction of the lenticular layer within a second portion of the lenticular layer to create a second region providing the single display.