KR101928135B1 - Optical film for display and display device comprising the same - Google Patents

Optical film for display and display device comprising the same Download PDF

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Publication number
KR101928135B1
KR101928135B1 KR1020150191353A KR20150191353A KR101928135B1 KR 101928135 B1 KR101928135 B1 KR 101928135B1 KR 1020150191353 A KR1020150191353 A KR 1020150191353A KR 20150191353 A KR20150191353 A KR 20150191353A KR 101928135 B1 KR101928135 B1 KR 101928135B1
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South Korea
Prior art keywords
light
image source
disposed
display
inclined surface
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KR1020150191353A
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Korean (ko)
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KR20170080122A (en
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윤현식
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서울과학기술대학교 산학협력단
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Priority to KR1020150191353A priority Critical patent/KR101928135B1/en
Publication of KR20170080122A publication Critical patent/KR20170080122A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/2242—

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

An optical film for display and a display device including the same are provided. Wherein the optical film for display comprises an optical film for display which is disposed on an image source part for providing an image source and refracts an image source provided by the image source part, And a light control unit disposed between the image source unit and the light refraction unit and configured to adjust the direction of light emitted from the image source unit, the light refraction unit having a second surface opposite to the first surface, The light refraction portion includes a light refraction pattern disposed on the first surface and having at least two inclined surfaces, and the light refraction pattern refracts light emitted from the light refraction portion. The display device includes an image source portion and an optical film for display disposed on the image source portion.

Description

TECHNICAL FIELD [0001] The present invention relates to an optical film for a display, and a display device including the optical film.

The present invention relates to an optical film for a display and a display device including the same.

2. Description of the Related Art [0002] Recently, technology for a display device that realizes 3D images without glasses or implements different images according to viewing directions is actively developed.

The display device adopts a parallax barrier method and a lenticular lens method in order to realize a non-eye hardened 3D image. However, the parallax barrier system has a problem that the brightness is lowered due to the barrier, and the space where the three-dimensional effect can be felt is small. The lenticular lens has a narrow viewing angle and requires a technique for attaching a lens, which makes it difficult to manufacture the lenticular lens. In addition, there is a problem that a structure and a manufacturing process of a display device for implementing a 3D image are complicated and a manufacturing cost is much consumed.

In order to solve the above problems, the present invention provides a display optical film capable of realizing a multi view image and / or a stereoscopic image with a simple structure.

The present invention provides a display device including the above optical film for display.

Other objects of the present invention will become apparent from the following detailed description and the accompanying drawings.

The optical film for display according to embodiments of the present invention is an optical film for display that is disposed on an image source unit for providing an image source and refracts an image source provided by the image source unit to display an image, And a second surface opposite to the first surface; and a light source disposed between the image source portion and the light refraction portion and adapted to adjust the direction of light emitted from the image source portion, Wherein the light refraction portion includes a light refraction pattern disposed on the first surface and having at least two inclined surfaces, and the light refraction pattern refracts light emitted from the light refraction portion.

The light modulating unit may include a light-transmitting unit that transmits light vertically incident on the light modulating unit, and a light-shielding unit that blocks light emitted from the image source unit.

The light blocking portion may include a light blocking material capable of blocking light.

The light blocking material may include particles that absorb, reflect, or scatter light.

The light blocking material may include at least one selected from organic materials, metals, and ceramics.

The light-shielding portion is arranged in an island shape with respect to a first direction and a second direction intersecting with the first direction, and may have a columnar shape.

The light blocking portion is arranged in the first direction and can extend in the second direction intersecting the first direction.

Wherein the image source portion includes a first pixel region and a second pixel region, the light refraction pattern including a first sloped surface and a second sloped surface, the intersection of the first sloped surface and the second sloped surface, A second edge may be defined and the first edge and the second edge may be alternately disposed at positions corresponding to the boundaries of the first pixel region and the second pixel region.

Wherein the light blocking portion includes a first light blocking portion disposed at a position corresponding to the first corner and a second light blocking portion disposed at a position corresponding to the second corner, The light from the first pixel region and the light from the second pixel region to the first inclined plane can be blocked.

The light blocking portion may further include a third light blocking portion disposed between the first light blocking portion and the second light blocking portion.

The first inter-edge spacing and the second inter-edge spacing may be equal to the sum of the widths of the first pixel region and the second pixel region, respectively.

The light modulating part may be adhered to the light refracting part.

Wherein the light refraction pattern has a contact surface connecting the first inclined surface and the second inclined surface and the contact surface is disposed at a position corresponding to a boundary between the first pixel region and the second pixel region of the image source unit, And the light refracting portion can be adhered to the light modulating portion through the contact surface.

Wherein the optical refraction pattern has a contact surface connecting the first inclined surface and the second inclined surface, and the optical film for display further comprises a structure disposed between the contact surface and the light control unit, To the light control unit.

The size of the cross section of the light refraction pattern in a direction perpendicular to the image source part may be reduced toward the image source part.

The light refraction pattern may have a polygonal pyramid shape.

The optical film for display may further include a light refraction adjusting material disposed in the recess region, the recess region being defined by the first inclined surface and the second inclined surface of the first surface.

The photorefractive modulator may include two or more different types of photorefractive modulators.

A display device according to embodiments of the present invention includes a display panel and an optical film for display disposed on the display panel.

The optical film for display according to the embodiments of the present invention can adjust the direction of light. The optical film for display can pass only light incident in a certain direction, thereby blocking light that causes a light interference phenomenon, so that a stereoscopic image or a multi-view image of excellent image quality can be realized. The optical film for display can be more effectively used for a display device having a large area such as a large-area 3D TV. The optical film for display can be applied to a non-eye-hardened stereoscopic display device capable of viewing a stereoscopic image without wearing glasses.

1 and 2 show an optical film for a display and an application example thereof according to an embodiment of the present invention.
FIGS. 3 and 4 illustrate a light control unit according to an embodiment of the present invention.
5 and 6 illustrate a light control unit according to another embodiment of the present invention.
7 and 8 show a light control unit according to another embodiment of the present invention.
9 and 10 show a light control unit according to another embodiment of the present invention.
11 and 12 show a light control unit according to another embodiment of the present invention.
13 and 14 illustrate a light control unit according to another embodiment of the present invention.
15 and 16 show an optical film for a display and an application example thereof according to another embodiment of the present invention.
17 and 18 show an optical film for display and an application example thereof according to still another embodiment of the present invention.
19 shows an optical film for a display and its application example according to another embodiment of the present invention.
20 and 21 show an optical film for display and an application example thereof according to still another embodiment of the present invention.
22 to 24 illustrate a light refracting portion and an application example thereof according to an embodiment of the present invention.
25 shows a photorefractive portion according to another embodiment of the present invention.
26 shows a display device according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to examples. The objects, features and advantages of the present invention will be easily understood by the following embodiments. The present invention is not limited to the embodiments described herein, but may be embodied in other forms. The embodiments disclosed herein are provided so that the disclosure may be thorough and complete, and that those skilled in the art will be able to convey the spirit of the invention to those skilled in the art. Therefore, the present invention should not be limited by the following examples.

Although the terms first, second, etc. are used herein to describe various elements, the elements should not be limited by such terms. These terms are only used to distinguish the elements from each other. In addition, when an element is referred to as being on another element, it may be directly formed on the other element, or a third element may be interposed therebetween.

The sizes of the elements in the figures, or the relative sizes between the elements, may be exaggerated somewhat for a clearer understanding of the present invention. In addition, the shape of the elements shown in the drawings may be somewhat modified by variations in the manufacturing process or the like. Accordingly, the embodiments disclosed herein should not be construed as limited to the shapes shown in the drawings unless specifically stated, and should be understood to include some modifications.

1 and 2 show an optical film for a display and an application example thereof according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, the optical film 10 may include a light modulating part 100 and a light refracting part 200. The optical film 10 may be disposed on a display panel 20 providing an image source to refract the image source provided on the display panel 20 to display an image.

The light adjusting part 100 may be disposed between the display panel 20 and the light refracting part 200. The light adjusting unit 100 may be disposed to adhere to the light refracting unit 200. The light adjusting part 100 and the light refracting part 200 adhere to each other so that the optical film 10 can maintain a structurally stable shape. The light adjustment unit 100 can adjust the direction of light emitted from the display panel 20. [ The light adjusting unit 100 can adjust the direction of light incident on the light refracting unit 200 to be constant. The light adjusting unit 100 can adhere to the light refracting unit 200 and efficiently adjust the direction of light incident on the light refracting unit 200. [ The light adjusting unit 100 may include at least one hole formed perpendicular to the light adjusting unit 100. [ A hole is formed in the light adjusting part 100 so that the light adjusting part 100 can pass light incident perpendicularly to the light adjusting part 100. [ The light adjustment unit 100 can pass light incident perpendicularly to the light control unit 100 from the light emitted from the display panel 20. [ The light adjustment unit 100 can block the light emitted from the display panel 20. [ The light adjustment unit 100 can cut off light that is not vertically incident on the light adjustment unit 100. The light adjustment unit 100 blocks the light that is not vertically incident, thereby preventing the crosstalk phenomenon in which the images overlap each other. That is, a part of the light emitted from the display panel 20 is blocked by the light adjusting unit 100, so that a stereoscopic image or a multi-view image of excellent image quality can be realized.

The light refracting portion 200 may be disposed on the display panel 20. The light refracting section 200 may be disposed on the light modulating section 100. The light refracting portion 200 may refract light that has passed through the light adjusting portion 100 from the display panel 20. The light refracting portion 200 may have a first surface 211 facing the display panel 20 and a second surface 212 opposite to the first surface 211. The light refraction portion 200 may include a light refraction pattern 220 disposed on the first surface 211. The light refracting portion 200 may include a plurality of light refraction patterns 220 disposed on the first surface 211. The light refraction pattern 220 may refract light that has exited the display panel 20 and has passed through the light modulator 100. The light refraction pattern 220 may have two or more inclined surfaces. The light refraction pattern 220 may have a first inclined surface 221 and a second inclined surface 222. The first inclined surface 221 and the second inclined surface 222 may be inclined at an angle of less than 90 degrees with respect to the light modulating part 100. [ The first inclined surface 221 may be disposed at a position corresponding to the first pixel region 21 and the second inclined surface 222 may be disposed at a position corresponding to the second pixel region 22. [ The first edge and the second edge can be defined by the intersection of the first slanted surface 221 and the second slanted surface 222. [ The first edge and the second edge may be alternately arranged at positions corresponding to the boundaries of the first pixel region 21 and the second pixel region 22. [ The first inter-edge spacing and the second inter-edge spacing may be equal to the sum of the widths of the first pixel region 21 and the second pixel region 22, respectively. The light refraction pattern 220 may have a polygonal pyramid shape. The light refraction pattern 220 in a direction perpendicular to the display panel 20 may have a triangular cross section. The photorefractive pattern 220 is shown as having a triangular cross-section, but is not limited thereto. The size of the cross section of the light refraction pattern 220 in the direction perpendicular to the display panel 20 can be reduced toward the display panel 20. [ The photorefractive part 200 may be formed of a material such as polyethylene terephthalate (PET), polyethyl methacrylate (PMMA), poly (pentabromophenyl methacrylate), polythiomethacrylate, polycarbonate ), A polymer material having a polarizing property, a nanocomposite, or the like. The nanocomposite may be in the form of nanoparticles (e.g., titanium dioxide nanoparticles) dispersed in a polymer (e.g., polyimide).

The display panel 20 may provide an image source. The display panel 20 may be a display panel used in various display devices 1 such as an LCD device, an LED device, an OLED device, a PDP device, a projection display device, a holographic display device, and a smart phone. The display panel 20 may include a plurality of pixel regions. For example, the display panel 20 may include a first pixel region 21 and a second pixel region 22. The first pixel 21 and the second pixel 22 may include at least one or more pixels.

The first light L1 and the third light L3 may be emitted from the first pixel region 21 of the display panel 20 and the second light L2 and the fourth light L3 may be emitted from the second pixel region 22. [ (L4). The first light L1 emitted from the first pixel area 21 of the display panel 20 passes through the light modulating part 100 and can enter the light refracting part 200. [ The first light L1 having passed through the light adjusting part 100 is incident on the first inclined surface 221 and refracted. The first light L1 passes through the light refracting part 200 and exits from the second surface 212 in a predetermined direction, , And a stereoscopic image can be displayed in the left direction. The second light L2 emitted from the second pixel region 22 of the display panel 20 may pass through the light modulator 100 and enter the light refracting portion 200. [ The second light L2 having passed through the light adjusting unit 100 is incident on the second inclined surface 222 and refracted. The second light L2 passes through the light refracting unit 200 and exits from the second surface 212 in a predetermined direction, , And a stereoscopic image can be displayed in the right direction. That is, the first light L1 and the second light L2 emitted from the display panel 20 pass through the light modulator 100 and are refracted by the light refraction pattern 220, And can display images in two different directions. The images appearing in two different directions can implement a stereoscopic image, or a multi-view image representing the same or different images, respectively. The third light L3 emitted from the first pixel region 21 may be blocked by the light shield 120 disposed in the light modulator 100. [ The third light L3 may pass through the light modulating part 100 and change its optical path in a direction perpendicular to the light modulating part 100. [ The third light L3 whose optical path has been changed is incident on the second inclined surface 222 and refracted. Then, the third light L3 passes through the light refracting portion 200 and exits from the second surface 212 to display a stereoscopic image in a predetermined direction. The fourth light L4 emitted from the second pixel region 22 may be blocked by the light shielding portion 120 disposed in the light modulating portion 100. [ The fourth light L4 may pass through the light modulating part 100 and change its optical path in a direction perpendicular to the light modulating part 100. [ The fourth light L4 whose optical path has been changed is incident on the first inclined surface 221 and refracted. Then, the fourth light L4 passes through the light refracting portion 200 and exits from the second surface 212 to display a stereoscopic image in a predetermined direction.

In the embodiments described herein, the optical film 10 is described as a display device disposed on the display panel 20, but the present invention is not limited thereto. For example, toys, Apparatuses, billboards, and the like.

FIGS. 3 and 4 illustrate a light control unit according to an embodiment of the present invention. 4 is a cross-sectional view taken along the line A-A 'in Fig.

3 and 4, the light modulating part 100 may include a light-transmitting part 110, a light-shielding part 120, and a light blocking material 130.

The transparent portion 110 may include a hole formed perpendicularly to the light modulating portion 100. The light projecting unit 110 may be disposed in the light adjusting unit 100 at least one. The transparent portion 110 may be partitioned by a partition wall. When the plurality of light projecting portions 110 are disposed, they can be individually partitioned by barrier ribs. The transparent portion 110 may allow light emitted from the display panel 20 to pass therethrough. The light projecting unit 110 can pass light incident perpendicularly to the light adjusting unit 100. [

The light shielding part 120 may include a hole formed perpendicular to the light adjusting part 100. At least one or more shielding portions 120 may be disposed in the light adjusting portion 100. The light shielding portion 120 may be partitioned by a partition wall. When a plurality of the light shielding portions 120 are disposed, they may be individually partitioned by barrier ribs. The light shielding portion 120 can block the light emitted from the display panel 20. [ A part of the light emitted from the display panel 20 may be blocked by the shielding part 120. The light shielding part 120 can block light that is not vertically incident on the light adjusting part 100. [ The light shielding portion 120 shields light that is not vertically incident, thereby preventing a crosstalk phenomenon in which images overlap.

The light blocking portion 120 may include a light blocking material 130. The light shielding material 130 may be filled in the holes formed in the light shielding portion 120. The light blocking material 130 may be formed of a material capable of blocking the movement of light emitted from the display panel 20. The light blocking material 130 may be formed of a material capable of absorbing, reflecting, or scattering light to block the movement of light from the display panel 20. For example, the light blocking material 130 may be composed of an organic material, a metal, or a ceramic. The light shielding part 120 may have a circular cross section in a direction parallel to the light adjusting part 100. The light shielding part 120 may have a cylindrical shape in a direction perpendicular to the light adjusting part 100. The light shielding portion 120 may be arranged in an island shape in a first direction x and a second direction y intersecting the first direction x.

5 and 6 illustrate a light control unit according to another embodiment of the present invention. 6 is a cross-sectional view taken along the line A-A 'in FIG.

Referring to FIGS. 5 and 6, the light blocking material 130 may be in the form of particles. The light shielding material 130 in the form of particles may be filled in the holes formed in the light shielding portion 120. A light blocking material 130 in the form of a particle may be filled in the hole to block the movement of light from the display panel 20. The light shielding part 120 may have a circular cross section in a direction parallel to the light adjusting part 100. The light shielding part 120 may have a cylindrical shape in a direction perpendicular to the light adjusting part 100. The light shielding portion 120 may be arranged in an island shape in a first direction x and a second direction y intersecting the first direction x. The light shielding material 130 in the form of particles may be disposed in the island-shaped light shielding part 120.

7 and 8 show a light control unit according to another embodiment of the present invention. 8 is a cross-sectional view taken along the line A-A 'in FIG.

The light shielding part 120 may have a rectangular cross section in a direction parallel to the light adjusting part 100. The light shielding part 120 may have a hexahedral shape in a direction perpendicular to the light adjusting part 100. Although not shown in the drawings, the light shielding portion 120 may have a polygonal cross section in a direction parallel to the light modulating portion 100. In addition, the light-shielding portion 120 may have a polyhedral shape in a direction perpendicular to the light modulating portion 100. The shape of the shielding portion 120 is not limited to this, and may be formed in various shapes. The light shielding portion 120 may be arranged in an island shape in a first direction x and a second direction y intersecting the first direction x.

9 and 10 show a light control unit according to another embodiment of the present invention. 10 is a cross-sectional view taken along the line A-A 'in FIG.

9 and 10, the light blocking material 130 may be formed in the form of particles. The light shielding material 130 in the form of particles may be filled in the holes formed in the light shielding portion 120. A light blocking material 130 in the form of a particle may be filled in the hole to block the movement of light from the display panel 20. The light shielding portion 120 may be arranged in an island shape in a first direction x and a second direction y intersecting the first direction x. The light shielding material 130 in the form of particles may be disposed in the island-shaped light shielding part 120.

11 and 12 show a light control unit according to another embodiment of the present invention. 12 is a cross-sectional view taken along the line A-A 'in FIG.

Referring to FIGS. 11 and 12, the transparent portion 110 may include a hole formed perpendicular to the light modulating portion 100. The light projecting unit 110 may be disposed in the light adjusting unit 100 at least one. The light projecting unit 110 can pass light incident perpendicularly to the light adjusting unit 100. [

The light shielding part 120 may include a hole formed perpendicular to the light adjusting part 100. At least one or more shielding portions 120 may be disposed in the light adjusting portion 100. The light shielding portion 120 can block the light emitted from the display panel 20. [

The light blocking portion 120 may include a light blocking material 130. The light shielding material 130 may be filled in the holes formed in the light shielding portion 120. The light blocking material 130 may be formed of a material capable of blocking the movement of light emitted from the display panel 20. The light blocking material 130 may be formed of a material capable of absorbing, reflecting, or scattering light to block the movement of light from the display panel 20. For example, the light blocking material 130 may be composed of an organic material, a metal, or a ceramic. The light shielding portion 120 may be arranged in the first direction x and may extend in the second direction y intersecting the first direction x. The light shielding portion 120 may be arranged in the second direction y and extend in the first direction x intersecting the second direction y. That is, the shielding portion 120 may be parallel to the light modulating portion 100 and may include an elongated surface. The light shielding part 120 may have a rectangular cross section in a direction parallel to the light adjusting part 100. The light shielding part 120 may have a hexahedral shape in a direction perpendicular to the light adjusting part 100. Although not shown in the drawings, the light shielding portion 120 may have a polygonal cross section in a direction parallel to the light modulating portion 100. In addition, the light-shielding portion 120 may have a polyhedral shape in a direction perpendicular to the light modulating portion 100.

13 and 14 illustrate a light control unit according to another embodiment of the present invention. 14 is a cross-sectional view taken along the line A-A 'in FIG.

13 and 14, the light-shielding portion 120 may include a light blocking material 130. The light shielding material 130 may be filled in the holes formed in the light shielding portion 120. The light blocking material 130 may be formed of a material capable of blocking the movement of light emitted from the display panel 20. The light blocking material 130 may be in the form of particles. The light shielding material 130 in the form of particles may be filled in the holes formed in the light shielding portion 120. A light blocking material 130 in the form of a particle may be filled in the hole to block the movement of light from the display panel 20. The light shielding portion 120 may be arranged in the first direction x and may extend in the second direction y intersecting the first direction x. The light shielding portion 120 may be arranged in the second direction y and extend in the first direction x intersecting the second direction y. A light blocking material 130 in the form of particles may be disposed in the light blocking portion 120 arranged in a hexahedron shape.

Figs. 15 and 16 show an optical film for a display and an application example thereof according to still another embodiment of the present invention.

Referring to FIGS. 15 and 16, the light refracting portion 200 may include a light refraction pattern 220 disposed on the first surface 211. The light refraction pattern 220 may have a first inclined surface 221 and a second inclined surface 222. The first inclined surface 221 may be disposed at a position corresponding to the first pixel region 21 and the second inclined surface 222 may be disposed at a position corresponding to the second pixel region 22. [ The first edge and the second edge can be defined by the intersection of the first slanted surface 221 and the second slanted surface 222. [ The first edge and the second edge may be alternately arranged at positions corresponding to the boundaries of the first pixel region 21 and the second pixel region 22. [

The light shielding part 120 may include a first light shielding part and a second light shielding part. The first light blocking portion may be disposed at a position corresponding to the first corner. And the second light blocking portion may be disposed at a position corresponding to the second corner. The shielding part 120 may further include at least one shielding part 120 between the first shielding part and the second shielding part. At least one shielding part 120 is disposed between the first shielding part and the second shielding part so that the shielding part 120 can effectively control the movement of light. The first light-shielding portion and the second light-shielding portion may be formed perpendicular to the light modulating portion 100. The first light-shielding portion and the second light-shielding portion may block light emitted from the display panel 20. The first light shielding portion and the second light shielding portion come out of the first pixel region 21 and block the light directed toward the second inclined surface 222 and the light directed from the second pixel region 22 to the first inclined surface 221 . The first light-shielding portion and the second light-shielding portion may include a light blocking material 130.

17 and 18 show an optical film for display and an application example thereof according to still another embodiment of the present invention.

Referring to FIGS. 17 and 18, the light refraction pattern 220 may include a contact surface 223 connecting the first inclined surface 221 and the second inclined surface 222. The contact surface 223 may be disposed at a position corresponding to the boundary between the first pixel region 21 and the second pixel region 22 of the display panel 20. [ The light refracting portion 200 can adhere to the light adjusting portion 100 through the contact surface 223. The plurality of light refraction patterns 220 disposed on the first surface 211 of the light refraction portion 200 may have the shape of a polygonal column. The cross section of the light refraction pattern 220 in a direction perpendicular to the display panel 20 may have a trapezoidal shape. The cross section of the light refraction pattern 220 in a direction parallel to the display panel 20 can be reduced toward the display panel 20. [

The light refraction pattern 220 may further include a structure 300 disposed at a position corresponding to a boundary between the first pixel region 21 and the second pixel region 22 of the display panel 20. [ The structure 300 may include a surface that connects to the first inclined surface 221 vertically with respect to the light control portion 100 and a surface that connects with the second inclined surface 222 perpendicularly to the light control portion 100 . The structure 300 may include a plane parallel to the contact surface 223. A surface disposed at the end of the contact surface 223 and connected to the first inclined surface 221, a surface disposed at the end of the contact surface 223 and connected to the second inclined surface 222, The cross section of the protrusion formed by one side may be a square. The light refracting portion 200 can adhere to the light modulating portion 100 through the protrusion.

19 shows an optical film for a display and its application example according to another embodiment of the present invention.

Referring to FIG. 19, recess regions A and B defined by the first inclined plane 221 and the second inclined plane 222 of the light refracting unit 200 may be disposed. The optical film 10 may comprise a photorefractive modulator material 400 disposed in the recessed regions A, B. The photorefractive modulator 400 may be filled in the recessed regions A and B and may include a first light L1 and a second pixel region 22 emerging from the first pixel region 21 of the display panel 20, Can refract the second light (L2) emerging from the first light (L2). The optical film 10 may include a first photorefractive modulator material 410 and a second photorefractive modulator material 420 having different refractive indexes in the recessed regions A and B. [ The photorefractive modulator 400 may include ethanol, water, fluorocarbon, silicone oil, fluorine oil, liquid crystal, and the like.

The first light L1 may emerge from the first pixel region 21 of the display panel 20 and the second light L2 may emerge from the second pixel region 22. [ The first light L1 passes through the light modulating part 100 and the optical refraction adjusting material 400 and enters the first inclined surface 221 of the light refraction pattern 220 to be refracted and passes through the second surface 212 And then proceed in a predetermined direction to display an image. The second light L2 passes through the light modulating part 100 and the optical refraction adjusting material 400 and enters the second inclined surface 222 of the light refraction pattern 220 to be refracted and passes through the second surface 212 And then proceed in a predetermined direction to display an image.

20 and 21 show an optical film for display and an application example thereof according to still another embodiment of the present invention.

Referring to FIGS. 20 and 21, the light refracting portion 200 may include a plurality of light refraction patterns 220 disposed on the first surface 211. The light refraction pattern 220 may have a first inclined surface 221 and a second inclined surface 222. The first inclined surface 221 may be inclined at an angle of less than 90 degrees with respect to the display panel 20 and the second inclined surface 222 may be perpendicular to the display panel 20. [ The first inclined surface 221 may be disposed perpendicular to the display panel 20 and the second inclined surface 222 may be inclined at an angle of less than 90 degrees with respect to the display panel 20. [ The cross section of the photorefractive pattern 220 may be a right triangle. The first pixel region 21 and the second pixel region 22 correspond to the first inclined plane 221, but the present invention is not limited thereto. That is, the first inclined surface 221 may correspond to the first pixel region 21 and the second pixel region 22, respectively.

The first light L1 emitted from the first pixel area 21 of the display panel 20 or the second light L2 emitted from the second pixel area 22 passes through the light modulating part 100, (200). The first light L1 or the second light L2 having passed through the light adjusting unit 100 is incident on the first inclined surface 221 and refracted and passes through the light refracting unit 200 to the second surface 212 The stereoscopic image can be displayed in a predetermined direction.

22 to 24 illustrate a light refracting portion and an application example thereof according to an embodiment of the present invention. FIG. 23 is a sectional view in the first direction (x) in FIG. 22, and FIG. 24 is a sectional view in the second direction (y) in FIG.

Referring to FIGS. 22 to 24, the light refracting portion 200 may include a plurality of light refraction patterns 220 disposed on the first surface 211. The light refraction pattern 220 may have a first inclined surface 221, a second inclined surface 222, a third inclined surface 223, and a fourth inclined surface 224 inclined in different directions. The first to fourth slanted surfaces 221 to 224 may correspond to the sides of the light refraction patterns 220, respectively. The first to fourth slanted surfaces 221 to 224 may be inclined at an angle of less than 90 degrees with respect to the light adjusting section 100. [ The first inclined surface 221 may be disposed at a position corresponding to the first pixel region 21 and the second inclined surface 222 may be disposed at a position corresponding to the second pixel region 22. [ The third inclined surface 223 may be disposed at a position corresponding to the third pixel region 23 and the fourth inclined surface 224 may be disposed at a position corresponding to the fourth pixel region 24. [

The display panel 20 may include a plurality of pixel regions. For example, the display panel 20 may include a first pixel region 21, a second pixel region 22, a third pixel region 23, and a fourth pixel region 24.

The first light L1, the second light L2, the third light L3 and the fourth light L4 from the display panel 20 are refracted twice to form an image. The first light L1 having passed through the light adjusting part 100 is incident on the first inclined surface 221 and refracted. The first light L1 passes through the light refracting part 200 and exits from the second surface 212 in a predetermined direction, , And a stereoscopic image can be displayed in the left direction. The second light L2 having passed through the light adjusting unit 100 is incident on the second inclined surface 222 and refracted. The second light L2 passes through the light refracting unit 200 and exits from the second surface 212 in a predetermined direction, , And a stereoscopic image can be displayed in the right direction. The third light L3 having passed through the light adjustment unit 100 is incident on the third inclined surface 223 and refracted. The third light L3 passes through the light refracting unit 200 and exits from the second surface 212 in a predetermined direction, , And a stereoscopic image can be displayed in the left direction. The fourth light L4 having passed through the light adjusting unit 100 is incident on the fourth inclined surface 224 and refracted. The fourth light L4 passes through the light refracting unit 200 and exits from the second surface 212 in a predetermined direction, , And a stereoscopic image can be displayed in the right direction.

25 shows a photorefractive portion according to another embodiment of the present invention.

Referring to FIG. 25, the light refracting portion 200 may be disposed on the display panel 20 and the light adjusting portion 100. The light refracting portion 200 may refract light that has passed through the light adjusting portion 100 from the display panel 20. The light refracting portion 200 may include a plurality of light refraction patterns 220 disposed on the first surface 211. The light refraction pattern 220 may refract light that has exited the display panel 20 and has passed through the light modulator 100. The light refraction pattern 220 may have a plurality of inclined surfaces. The plurality of inclined surfaces may be inclined at an angle of less than 90 degrees with respect to the light adjusting unit 100. [ The light refracting portion 200 may have various shapes. The light refraction pattern 220 may have a polygonal pyramid shape. The light refraction pattern 220 in a direction perpendicular to the display panel 20 may have a triangular cross section. The size of the cross section of the light refraction pattern 220 in the direction perpendicular to the display panel 20 can be reduced toward the display panel 20. [

26 shows a display device according to an embodiment of the present invention.

Referring to Fig. 26, the display device 1 may include an optical film 10 and a display panel 20. Fig. The display device 1 can be used in an apparatus including various displays such as a TV, a notebook, a smart phone and the like. The display apparatus 1 can display different screens to the user depending on the direction in which the user views the screen. In addition, the display device 1 can display different images on both eyes of the user, and the user can view 3D stereoscopic images without wearing glasses.

The optical film 10 may include a light modulating part 100 and a light refracting part 200. The light adjusting part 100 may be disposed between the display panel 20 and the light refracting part 200. The light adjusting unit 100 may be disposed apart from the light refracting unit 200. Although not shown in the drawing, the light modulating part 100 may be adhered to the display panel 20. The light adjusting unit 100 may include at least one hole formed perpendicular to the light adjusting unit 100. [ A hole is formed in the light adjusting part 100 so that the light adjusting part 100 can pass light incident perpendicularly to the light adjusting part 100. [ The light adjustment unit 100 can pass light incident perpendicularly to the light control unit 100 from the light emitted from the display panel 20. [ The light adjustment unit 100 can block the light emitted from the display panel 20. [ The light adjustment unit 100 can cut off light that is not vertically incident on the light adjustment unit 100.

Hereinafter, specific embodiments of the present invention have been described. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

10: Optical film for display 20: Image source part
21: first pixel 22: second pixel
100: light control unit 110:
120: shielding part 130: light shielding material
200: light refracting portion 211: first surface
212: second surface 220: light refraction pattern
221: first inclined surface 222: second inclined surface
223: contact surface 300: structure
400: photorefractive modulator 410: first photorefractive modulator
420: second photorefractive modulator

Claims (19)

1. An optical film for display which is disposed on an image source part for providing an image source and refracts an image source provided by the image source part to display an image,
A light refracting portion having a first surface facing the image source portion and a second surface opposite to the first surface; And
And a light adjusting unit disposed between the image source unit and the light refracting unit to adjust a direction of light emitted from the image source unit,
The light refracting portion includes:
A light refraction pattern disposed on the first surface and having at least two inclined surfaces,
In the light refraction pattern,
Refracts the light emitted from the light adjusting unit,
The light-
A light projecting part for passing light incident perpendicularly to the light modulating part;
And a light shielding unit for shielding light not perpendicular to the light control unit,
Wherein the light shielding portion includes a light shielding material capable of blocking light,
Wherein the light blocking material includes particles that absorb, reflect, or scatter light. delete 1. An optical film for display which is disposed on an image source part for providing an image source and refracts an image source provided by the image source part to display an image,
A light refracting portion having a first surface facing the image source portion and a second surface opposite to the first surface; And
And a light adjusting unit disposed between the image source unit and the light refracting unit to adjust a direction of light emitted from the image source unit,
The light refracting portion includes:
A light refraction pattern disposed on the first surface and having at least two inclined surfaces,
In the light refraction pattern,
Refracts the light emitted from the light adjusting unit,
The light-
A light projecting part for passing light incident perpendicularly to the light modulating part;
And a light shielding unit for shielding light not perpendicular to the light control unit,
Wherein the light shielding portion includes a light shielding material capable of blocking light,
Wherein the light blocking material comprises at least one selected from the group consisting of organic materials, metals, and ceramics. delete delete The method according to claim 1,
Wherein the light-shielding portion is arranged in an island shape with respect to a first direction and a second direction intersecting the first direction, and has a columnar shape. The method according to claim 1 or 3,
Wherein the light blocking portion is arranged in a first direction and extends in a second direction intersecting with the first direction. The method according to claim 1 or 3,
Wherein the image source portion includes a first pixel region and a second pixel region,
Wherein the light refraction pattern includes a first inclined surface and a second inclined surface,
Wherein a first edge and a second edge are defined by the intersection of the first inclined surface and the second inclined surface,
Wherein the first edge and the second edge are alternately arranged at positions corresponding to a boundary between the first pixel region and the second pixel region. 9. The method of claim 8,
The light-
A first light-shielding portion disposed at a position corresponding to the first corner,
And a second light-shielding portion disposed at a position corresponding to the second corner,
Wherein the first light-shielding portion and the second light-shielding portion shield light emitted from the first pixel region and directed toward the second inclined surface and light directed from the second pixel region to the first inclined surface. film. 10. The method of claim 9,
Wherein the light blocking portion further comprises a third light blocking portion disposed between the first light blocking portion and the second light blocking portion. 9. The method of claim 8,
Wherein the first inter-edge spacing and the second inter-edge spacing are equal to the sum of the widths of the first pixel region and the second pixel region, respectively. The method according to claim 1 or 3,
And the light modulating part is bonded to the light refracting part. 9. The method of claim 8,
Wherein the light refraction pattern has a contact surface connecting the first inclined surface and the second inclined surface,
Wherein the contact surface is disposed at a position corresponding to a boundary between the first pixel region and the second pixel region of the image source unit,
And the light refraction part is bonded to the light modulating part through the contact surface. 9. The method of claim 8,
Wherein the light refraction pattern has a contact surface connecting the first inclined surface and the second inclined surface,
Further comprising a structure disposed between the contact surface and the light modulation unit,
Wherein the light refraction portion is coupled to the light modulating portion by the structure. The method according to claim 1 or 3,
Wherein a size of a cross section of the light refraction pattern in a direction perpendicular to the image source portion is reduced toward the image source portion. The method according to claim 1 or 3,
Wherein the optical refraction pattern has a polygonal pyramid shape. 9. The method of claim 8,
Further comprising a recessed region defined by the first inclined surface and the second inclined surface on the first surface, and a light refraction adjusting material disposed on the recessed region. 18. The method of claim 17,
Wherein the optical refraction adjusting material comprises two or more different types of optical refraction adjusting materials. A display panel; And
And an optical film for display disposed on the display panel,
Wherein the optical film for display is the optical film for display according to any one of claims 1 to 3.
KR1020150191353A 2015-12-31 2015-12-31 Optical film for display and display device comprising the same KR101928135B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11943961B2 (en) 2019-10-15 2024-03-26 Samsung Display Co., Ltd. Electronic device

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JP2005078078A (en) * 2003-08-30 2005-03-24 Sharp Corp Multi-view directional display
JP2007279424A (en) * 2006-04-07 2007-10-25 Three M Innovative Properties Co Privacy filter sheet and display device containing the same
JP2010243941A (en) * 2009-04-09 2010-10-28 Panasonic Corp Stereoscopic image display device and multi-view display device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005078078A (en) * 2003-08-30 2005-03-24 Sharp Corp Multi-view directional display
JP2007279424A (en) * 2006-04-07 2007-10-25 Three M Innovative Properties Co Privacy filter sheet and display device containing the same
JP2010243941A (en) * 2009-04-09 2010-10-28 Panasonic Corp Stereoscopic image display device and multi-view display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11943961B2 (en) 2019-10-15 2024-03-26 Samsung Display Co., Ltd. Electronic device

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