Display device

A display device comprising;

• a flexible display panel having a first axis and curving along the first axis as an axis of curvature;
• a light module located on one side of the flexible display panel;
• and
• an optical film located between the flexible display panel and the light module, the optical film comprising:
• a substrate having a first side and a second side that are opposite to each other, wherein the first side faces the light module while the second side faces the flexible display panel;
• a plurality of first strip microstructures located on the first side of the substrate, and wherein the plurality of first strip microstructures extend along a second axis;
• and
• a plurality of second strip microstructures located on the second side of the substrate;
• wherein a first angle is formed between the first axis and the second axis, and the first angle is greater than or equal to minus 20 degrees and less than or equal to 20 degrees.

A display device comprising;

• a flexible display panel having a first axis and curving about the first axis as an axis of curvature;
• a light module located on one side of the flexible display panel;
• and
• an optical film located between the flexible display panel and the light module, the optical film comprising:
• a substrate having a first side and a second side that are opposite to each other, wherein the first side faces the light module while the second side faces the flexible display panel;
• and
• a plurality of first strip microstructure located on the first side of the substrate, wherein the plurality of first strip microstructures extend along a second axis;
• wherein a first direction perpendicular to the first axis is defined, a second direction parallel to the first axis is defined, the angle of full width at half maximum of the display device along the first direction (hereinafter FWHM1) is greater than 140 degrees, the angle of full width at half maximum of the display device along the second direction (hereinafter FWHM2) is less than 100 degrees, and the difference between FWHM1 and FWHM2 is greater than 50 degrees.

A display device comprising;

• a flexible display panel having a first axis and a second axis perpendicular to the first axis, wherein the flexible display panel curves along both the first axis and the second axis as the axes of curvature;
• a light module located on one side of the flexible display panel;
• and
• an optical film located between the flexible display panel and the light module, the optical film comprising:
• a substrate having a first side and a second side that are opposite to each other, wherein the first side faces the light module while the second side faces the flexible display panel;
• and
• a plurality of pyramidal microstructures located on the first side of the substrate, wherein the pyramidal microstructures are arranged in an array along a first alignment direction and a second assignment direction intersecting with the first alignment direction;
• wherein the angle between the first alignment direction and the first axis, the angle between the first alignment direction and the second axis, the angle between the second alignment direction and the first axis, and the angle between the second alignment direction and the second axis are all greater than or equal to 40 degrees and less than or equal to 50 degrees.

A display device comprising;

• a flexible display panel having a first axis and a second axis perpendicular to the first axis, wherein the flexible display panel curves along both the first axis and the second axis as the axes of curvature;
• a light module located on one side of the flexible display panel;
• and
• an optical film located between the flexible display panel and the light module, the optical film comprising:
• a substrate having a first side and a second side that are opposite to each other, wherein the first side faces the light module while the second side faces the flexible display panel;
• and
• a plurality of pyramidal microstructures located on the second side of the substrate and arranged in an array;
• wherein a first direction perpendicular to the first axis is defined, a second direction parallel to the first axis is defined, a third direction forming a 45 degree angle between itself and the first direction is defined, a fourth direction forming a 45 degree angle between itself and the second direction is defined, the fourth direction is perpendicular to the third direction, both the angle of full width at half maximum of the display device along the first direction (hereinafter FWHM1) and the angle of full width at half maximum of the display device along the second direction (hereinafter FWHM2) are greater than 140 degrees, both the angle of full width at half maximum of the display device along the third direction (hereinafter FWHM3) and the angle of full width at half maximum of the display device along the fourth direction (hereinafter FWHM4) are less than 125 degrees, and the difference between FWHM1 and FWHM3, the difference between FWHM1 and FWHM4, the difference between FWHM2 and FWHM3, and the difference between FWHM2 and FWHM4 are all greater than 40 degrees.

A display device comprising:

• a flexible display panel curving as a spherical shape;
• a light module located on one side of the flexible display panel;
• and
• an optical film located between the flexible display panel and the light module, wherein the optical film comprises a substrate having a plurality of microcavities, and the light transmittance of the substrate ranges from 5% to 50%.

A display device comprising:

• a flexible display panel curving as a spherical shape;
• a light module located on one side of the flexible display panel;
• and
• an optical film having a plurality of microcavities, wherein the angles of full width at half maximum of the display device along any direction are greater than 140 degrees.