WO2017054382A1 - 光学元件、导光板、棱镜、背光模组及显示装置 - Google Patents

光学元件、导光板、棱镜、背光模组及显示装置 Download PDF

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Publication number
WO2017054382A1
WO2017054382A1 PCT/CN2016/072264 CN2016072264W WO2017054382A1 WO 2017054382 A1 WO2017054382 A1 WO 2017054382A1 CN 2016072264 W CN2016072264 W CN 2016072264W WO 2017054382 A1 WO2017054382 A1 WO 2017054382A1
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WO
WIPO (PCT)
Prior art keywords
prism
strip
light
shaped
guide plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/072264
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English (en)
French (fr)
Inventor
孙文佳
刁凯
朴仁镐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Beijing BOE Display Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US15/509,718 priority Critical patent/US10132966B2/en
Priority to EP16837972.5A priority patent/EP3358379A4/en
Publication of WO2017054382A1 publication Critical patent/WO2017054382A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to an optical component, a light guide plate, a prism, a backlight module, and a display device.
  • An object of the present disclosure is to provide an optical component, a light guide plate, a prism, a backlight module, and a display device, which can improve the viewing angle while improving the brightness, and solve the problem that the light guide plate has a small viewing angle and a low yield in the related art. technical problem.
  • An optical component comprising a light transmissive substrate, the light transmissive substrate comprising a first surface on which a plurality of strip prisms parallel to each other and extending in another predetermined direction are arranged in a predetermined direction
  • each of the strip-shaped prisms has a refractive surface on a side close to a center of the light-transmitting substrate, the refractive surface being close to the light-transmitting
  • One end of the center of the base body to an end near the edge of the light-transmitting substrate gradually moves away from the first surface Tilting and, from a strip-shaped prism body closest to the center of the light-transmitting substrate to a strip-shaped prism body farthest from the center of the light-transmitting substrate, the refractive surface and the normal of the first surface The angle between the two gradually increases.
  • the strip-shaped prism body has a triangular cross section, wherein the cross section is parallel to the arrangement direction of the plurality of strip-shaped prism bodies and perpendicular to the first surface, the cross section of the strip-shaped prism body
  • the triangle includes: a first vertex; a first side and a second side connected between the first vertex and the first side; wherein the first side is located near a cross-section triangle of the strip-shaped prism
  • One side of the center of the light-transmitting substrate, the refractive surface of the strip-shaped prism body is formed by the first side.
  • an angle between the arrangement direction of the plurality of strip-shaped prisms and the extending direction of the strip-shaped prisms is 90° ⁇ 1°.
  • the plurality of strip-shaped prisms are symmetrical with respect to a center of the light-transmitting substrate.
  • the plurality of strip prisms comprises:
  • a central prism at a position of a center of the light-transmissive substrate in a direction in which the plurality of strip-shaped prisms are arranged, the central prism comprising two refractive surfaces symmetrical with respect to a center of the light-transmitting substrate; , two side prism groups on both sides of the central prism;
  • angle between the refractive surface of the central prism and the normal of the first surface is smaller than the refractive surface of each of the prisms in the side prism group and the normal of the first surface Angle.
  • the light transmissive sheet further includes a second surface disposed opposite to the first surface, wherein the second surface is provided with a plurality of scattering dots.
  • each of the scattering dot structures is a sector structure.
  • diffusing particles are disposed in the light-transmitting substrate of the optical element.
  • a backlight module includes the light guide plate as described above.
  • the backlight module further includes: a prism as described above disposed on a side of the light-emitting surface of the light guide plate, wherein a first surface of the prism faces the first surface of the light guide plate, and
  • the strip-shaped prism body of the prism has a predetermined angle with the extending direction of the strip-shaped prism body of the light guide plate.
  • a predetermined angle between the strip-shaped prism body of the prism and the extending direction of the strip-shaped prism body of the light guide plate is 90°.
  • an optical glue is connected between the first surface of the prism and the first surface of the light guide plate.
  • a display device includes the backlight module as described above.
  • the optical component provided by the present disclosure When the optical component provided by the present disclosure is used as a light guide plate in a backlight module, the light propagation angle of the backlight module can be improved, and the viewing angle of the display can be improved, thereby solving the problem of low viewing angle and low yield in the related art. problem.
  • FIG. 1 shows a schematic structural view of an optical element provided in some embodiments of the present disclosure
  • FIG. 2 is a schematic structural view of a light guide plate provided in some embodiments of the present disclosure.
  • FIG. 3 is a schematic view showing the structure of a prism provided in some embodiments of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a backlight module provided in some embodiments of the present disclosure.
  • an embodiment of the present disclosure provides an optical component including a light transmissive substrate 100, the light transmissive substrate 100 including a first side along a predetermined direction (eg, a plurality of strip-shaped prism bodies 200 extending parallel to each other and extending in another predetermined direction (for example, the second direction); wherein, in the direction in which the plurality of strip-shaped prism bodies 200 are arranged, each The strip-shaped prism body 200 has a refractive surface 201 on a side close to the center of the light-transmitting substrate 100, and the refractive surface 201 is from an end near the center of the light-transmitting substrate 100 to the light-transmitting substrate 100.
  • a predetermined direction eg, a plurality of strip-shaped prism bodies 200 extending parallel to each other and extending in another predetermined direction (for example, the second direction
  • each The strip-shaped prism body 200 has a refractive surface 201 on a side close to the center of the light-transmitting substrate 100, and the ref
  • One end of the edge is gradually inclined away from the first face, and a strip-shaped prism 200 closest to the center of the light-transmitting substrate 100 is stripe farthest from the center of the light-transmitting substrate 100
  • the angle between the refractive surface 201 and the normal of the first surface is gradually increased by the prism 200.
  • a prism structure composed of a plurality of strip-shaped prism bodies 200 is disposed on the upper surface of the light-transmitting substrate 100 of the optical element, and the plurality of strip-shaped prism bodies 200 are designed to be at the center of the light-transmitting substrate 100
  • the center axis the left and right sides are arranged, and the closer to the edge of the light-transmitting substrate 100, the larger the inclination angle of the strip-shaped prism body 200 ensures that the light emitted through the prism structure transmitted through the surface of the light-transmitting substrate 100 is not completely vertical.
  • the upward emission on the surface of the light-transmitting substrate 100 increases the light propagation angle of the optical component.
  • the viewing angle of the backlight module can be increased, thereby solving the correlation.
  • the prism structure is disposed on the surface of the light guide plate, there is a problem that the viewing angle is small.
  • the strip prism 200 has a triangular cross section, wherein the cross section is parallel to the plurality of strip prisms a direction of arrangement of 200, and perpendicular to the first face, the cross-sectional triangle of the strip-shaped prism body 200 includes: a first vertex; a first side connected between the first vertex and the first side And a second side; wherein the first side is located on a side of the cross-sectional triangular shape of the strip-shaped prism body 200 near the center of the light-transmitting substrate 100, and the refractive surface 201 of the strip-shaped prism body 200 is First Edge formation.
  • each of the strip prisms 200 has a triangular cross section. It should be understood that, in practical applications, the strip prism 200 may have a strip shape of a trapezoidal shape or the like. For the prism body 200, it is only necessary to ensure that the refracting surface 201 on each strip-shaped prism body 200 gradually increases from the center to the edge.
  • the arrangement direction of the plurality of strip prisms 200 and the extending direction of the strip prism 200 are between 90° ⁇ 1°. . That is to say, the angle of the prism structure formed by each strip prism 200 on the light-transmitting substrate 100 may be 90° ⁇ 1°. It should be understood that only one alternative is provided in the present disclosure and is not limited thereto.
  • a plurality of strip-shaped prism bodies 200 are symmetrical with respect to the center of the light-transmitting substrate 100 in the arrangement direction of the plurality of strip-shaped prism bodies 200.
  • the plurality of prisms are symmetrically distributed on the light-transmitting substrate 100, which is more conducive to uniform diffusion of light.
  • a plurality of strip prisms 200 include:
  • center prism at a position of a center of the light-transmitting substrate 100 in a direction in which the plurality of strip-shaped prism bodies 200 are arranged, the center prism body including two refractions symmetric with respect to a center of the light-transmitting substrate 100 a face 201; and two sets of side prisms respectively located on both sides of the central prism;
  • the angle between the refractive surface 201 of the central prism and the normal of the first surface is smaller than the refractive surface 201 of each strip prism 200 in the side prism group and the normal of the first surface The angle between.
  • the central prism is symmetric about the center of the transparent substrate 100, and the strip prisms 200 on both sides of the central prism are symmetric with respect to the center of the transparent substrate 100, thereby achieving completeness. symmetry. It should be understood that, in practical applications, the specific structure of the plurality of strip prisms 200 is not limited, and other structures may be employed.
  • optical element provided in some embodiments of the present disclosure may serve as a light guide plate, a prism, or other optical elements that can transmit light.
  • a light guide plate is also provided in some embodiments of the present disclosure, and the light guide plate is as described above.
  • the optical elements described are formed. That is, the structure of the light guide plate is the same as that of the above optical element.
  • FIG. 2 is a schematic structural diagram of a light guide plate provided in some embodiments of the present disclosure.
  • the light guide plate 10 includes a light-transmitting substrate 100.
  • the light-transmitting substrate 100 includes a first surface, and the first surface is arranged in a predetermined direction parallel to each other and along another predetermined direction.
  • a plurality of strip-shaped prism bodies 200 extending; wherein, in the direction in which the plurality of strip-shaped prism bodies 200 are arranged, each of the strip-shaped prism bodies 200 has a refraction on a side close to the center of the light-transmitting substrate 100 a surface 201, the refractive surface 201 is gradually inclined away from the first surface from an end near the center of the light-transmitting substrate 100 to an end near the edge of the light-transmitting substrate 100, and from the distance
  • the strip-shaped prism body 200 closest to the center of the light-transmitting substrate 100 faces the strip-shaped prism body 200 farthest from the center of the light-transmitting substrate 100, and the gap between the refractive surface 201 and the normal line of the first surface The angle
  • the light guide plate 10 provided in some embodiments of the present disclosure is applied to the backlight module, the light emitted from the prism on the surface of the light-transmitting substrate 100 is not completely perpendicular to the surface of the light-transmitting substrate 100, and the backlight can be increased.
  • the viewing angle of the module solves the problem that the viewing angle is small when the prism body is disposed on the upper surface of the light guide plate 10 in the related art.
  • the arrangement direction and the extension direction may be extension directions of adjacent side edges of the light-transmitting substrate 100 of the light guide plate 10, respectively, for clearly explaining the strip-shaped prism body 200.
  • the structure is not limited to the arrangement direction and the extension direction.
  • the strip prism 200 has a triangular cross section, wherein the cross section is parallel to the plurality of strip prisms 200.
  • the cross-sectional triangle of the strip-shaped prism 200 includes: a first vertex; a first side connected between the first vertex and the first side a second side; wherein the first side is located on a side of the cross-sectional triangle of the strip-shaped prism body 200 near the center of the light-transmitting substrate 100, and the refractive surface 201 of the strip-shaped prism body 200 is The first side is formed.
  • each strip prism 200 is a triangle. It should be understood that, in practical applications, the strip prism 200 may have a shape such as a trapezoid in cross section.
  • the strip-shaped prism body 200 only needs to ensure that the refracting surface 201 on each strip-shaped prism body 200 gradually increases from the center to the edge.
  • the arrangement direction of the plurality of strip prisms 200 and the extending direction of the strip prism 200 are 90° ⁇ 1. °.
  • the angle of the prism structure formed by each strip prism 200 on the light-transmitting substrate 100 of the light guide plate 10 can be selected as 90° ⁇ 1°, that is, the extending direction of each strip prism 200 is transparent.
  • One side edge of the light substrate 100 is parallel and perpendicular to the other side edge. It should be understood that only one alternative is provided in the present disclosure and is not limited thereto.
  • a plurality of strip-shaped prism bodies 200 are symmetrical with respect to the center of the light-transmitting substrate 100 in the arrangement direction of the plurality of strip-shaped prism bodies 200.
  • the plurality of prisms are symmetrically distributed on the light-transmitting substrate 100, which is more conducive to uniform diffusion of light.
  • a plurality of strip prisms 200 include:
  • center prism at a position of a center of the light-transmitting substrate 100 in a direction in which the plurality of strip-shaped prism bodies 200 are arranged, the center prism body including two refractions symmetric with respect to a center of the light-transmitting substrate 100 a face 201; and two sets of side prisms respectively located on both sides of the central prism;
  • the angle between the refractive surface 201 of the central prism and the normal of the first surface is smaller than the refractive surface 201 of each strip prism 200 in the side prism group and the normal of the first surface The angle between.
  • the central prism is symmetric about the center of the transparent substrate 100, and the strip prisms 200 on both sides of the central prism are symmetric with respect to the center of the transparent substrate 100.
  • Completely symmetrical It should be understood that, in practical applications, the specific structure of the plurality of strip prisms 200 is not limited, and other structures may be employed.
  • the light guide plate 10 provided in some embodiments of the present disclosure further includes a second surface opposite to the light exiting surface, and a plurality of scattering dots 300 are disposed on the second surface.
  • the scattering dots 300 may be designed in a fan shape or other irregular shape and matched with the angle of the prism on the light emitting surface of the light guide plate 10 to achieve an optimum emission effect.
  • some embodiments of the present disclosure also provide a prism that employs some of the present disclosure.
  • the optical elements provided in the examples are formed. That is, the structure of the prism is the same as that of the optical element.
  • FIG 3 is a schematic view showing the structure of a prism provided in some embodiments of the present disclosure.
  • the prism provided in some embodiments of the present disclosure includes a light-transmitting substrate 100, and the light-transmitting substrate 100 includes a first surface on which the first surface is arranged in parallel with each other along a predetermined direction. a plurality of strip-shaped prism bodies 200 extending in another predetermined direction; wherein, in the direction in which the plurality of strip-shaped prism bodies 200 are arranged, each of the strip-shaped prism bodies 200 is adjacent to a center of the light-transmitting substrate 100
  • the side has a refractive surface 201 that is gradually inclined away from the first surface from an end near the center of the light-transmitting substrate 100 to an end near the edge of the light-transmitting substrate 100, and From the strip-shaped prism body 200 closest to the center of the light-transmitting substrate 100 to the strip-shaped prism body 200 farthest from the center of the light-transmitting substrate 100, the refractive surface 201 and the normal of the first surface The angle between them gradually increases.
  • the prism is provided with prisms composed of a plurality of strip-shaped prisms 200, and the plurality of strip-shaped prisms 200 are designed such that the center of the light-transmitting substrate 100 is the central axis, and the left and right sides are arranged, and the closer
  • the edge of the light-transmitting substrate 100, the larger the inclination angle of the strip-shaped prism body 200, ensures that the light emitted from the prism on the surface of the light-transmitting substrate 100 is not completely perpendicular to the surface of the light-transmitting substrate 100, and the optical element is enlarged.
  • the angle of light propagation is provided with prisms composed of a plurality of strip-shaped prisms 200, and the plurality of strip-shaped prisms 200 are designed such that the center of the light-transmitting substrate 100 is the central axis, and the left and right sides are arranged, and the closer
  • the strip prism 200 has a triangular cross section, wherein the cross section is parallel to a plurality of strip prisms a direction of arrangement of 200, and perpendicular to the first face, the cross-sectional triangle of the strip-shaped prism body 200 includes: a first vertex; a first side connected between the first vertex and the first side And a second side; wherein the first side is located on a side of the cross-sectional triangular shape of the strip-shaped prism body 200 near the center of the light-transmitting substrate 100, and the refractive surface 201 of the strip-shaped prism body 200 is The first side is formed.
  • each of the strip prisms 200 has a triangular cross section. It should be understood that, in practical applications, the strip prism 200 may also be a prism having various shapes such as a trapezoidal cross section. It is only necessary to ensure that the refractive surface 201 of each strip prism 200 is gradually increased from the center to the edge.
  • a plurality of strip edges The angle between the arrangement direction of the cylinders 200 and the extending direction of the strip-shaped prism bodies 200 is 90° ⁇ 1°. That is, the angle of the prism structure formed by each strip prism 200 on the light transmissive substrate 100 may be 90° ⁇ 1°. It should be understood that only one alternative is provided in the present disclosure and is not limited thereto.
  • a plurality of strip-shaped prism bodies 200 are symmetrical with respect to the center of the light-transmitting substrate 100 in the arrangement direction of the plurality of strip-shaped prism bodies 200.
  • the plurality of prisms are symmetrically distributed on the light-transmitting substrate 100, which is more conducive to uniform diffusion of light.
  • the plurality of strip prisms 200 include:
  • center prism at a position of a center of the light-transmitting substrate 100 in a direction in which the plurality of strip-shaped prism bodies 200 are arranged, the center prism body including two refractions symmetric with respect to a center of the light-transmitting substrate 100 a face 201; and two sets of side prisms respectively located on both sides of the central prism;
  • the angle between the refractive surface 201 of the central prism and the normal of the first surface is smaller than the refractive surface 201 of each strip prism 200 in the side prism group and the normal of the first surface The angle between.
  • the central prism is symmetric about the center of the transparent substrate 100, and the strip prisms 200 on both sides of the central prism are symmetric with respect to the center of the transparent substrate 100, and are completely realized. symmetry. It should be understood that, in practical applications, the specific structure of the plurality of strip prisms 200 is not limited, and other structures may be employed.
  • diffusion particles 400 are further disposed in the light-transmitting substrate 100 of the prism.
  • the diffusion uniformity is further improved by providing the diffusion particles 400.
  • an embodiment of the present disclosure further provides a backlight module including the light guide plate 10 provided in some embodiments of the present disclosure.
  • the backlight module adopts a light guide plate 10 having a prism structure, and a plurality of strip prisms 200 on the light exit surface of the light guide plate 10 are centered on the center of the light guide plate 10, and are arranged on the left and right sides.
  • the edge of the strip-shaped prism body 200 has a larger inclination angle, so that the angle of propagation of the light emitted from the prism passing through the light-emitting surface of the light guide plate 10 is increased, and the upper surface of the light guide plate 10 is solved in the related art.
  • the problem of small viewing angle when placing the prism is described in the related art.
  • the backlight module further includes: a prism 20 disposed on a side of the light-emitting surface of the light guide plate 10, wherein The prism 20 is provided with the prism 20 provided in some embodiments of the present disclosure, and the light-emitting surface of the prism 20 is disposed facing the light-emitting surface of the light guide plate 10.
  • the backlight module adopts the design of the light guide plate 10 having the prism 20 and the reverse prism, and the plurality of strip prisms 200 on the prism 20 are centered on the center of the prism 20, and the left and right sides are arranged, and the closer The edge, the larger the inclination angle of the strip prism 200, thereby increasing the viewing angle of the backlight module and reducing the defective rate.
  • the strip prism 200 of the prism 20 and the extending direction of the strip prism 200 of the light guide plate 10 There is a preset angle between them, and further optionally, a predetermined angle between the strip prism 200 of the prism 20 and the extending direction of the strip prism 200 of the light guide plate 10 is 90°.
  • the angle difference between the angle of the prism 20 in the counter prism 20 matched with the light guide plate 10 and the prism structure on the upper surface of the light guide plate 10 is 90°, which can better enhance the light effect, wherein, optionally, By adding the diffusion particles 400 to the light-transmitting substrate of the reverse prism 20, the distribution of the emitted light can be more uniform, and the viewing angle can be improved.
  • the combination structure of the above-mentioned light guide plate and the reverse prism it is possible to eliminate the need for the upper diffusion sheet, and related art.
  • the upper diffuser has the same picture quality.
  • the backlight module when the backlight module is designed with a light guide plate and a reverse prism, there is a problem that the light guide plate 10 and the reverse prism 20 are difficult to assemble and the yield is low.
  • the backlight module provided in some embodiments of the present disclosure is optionally connected by optical glue between the light emitting surface of the prism 20 and the light emitting surface of the light guide plate 10.
  • the light guide plate 10 and the reverse prism 20 are adhered together by an optically clear adhesive (OCA) to reduce assembly friction loss, further improve yield and reduce cost.
  • OCA optically clear adhesive
  • a display device is also provided in some embodiments of the present disclosure, including a backlight module provided in some embodiments of the present disclosure.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种光学元件，包括一透光基体（100），透光基体包括第一面，在第一面上沿一预定方向排列有相互平行且沿另一预定方向延伸的多个条状棱柱体（200）。在多个条状棱柱体的排列方向上，每一条状棱柱体在靠近透光基体的中心的一侧具有一折射面（201），折射面自靠近透光基体的中心的一端至靠近透光基体的边缘的一端逐渐向远离第一面的方向倾斜。从距离透光基体的中心最近的条状棱柱体向距离透光基体的中心最远的条状棱柱体，折射面与第一面的法线之间的夹角逐渐增大。还公开了一种导光板（10），棱镜（20），背光模组及显示装置。

Description

光学元件、导光板、棱镜、背光模组及显示装置
相关申请的交叉引用
本申请主张在2015年9月28日在中国提交的中国专利申请号No.201510628980.4的优先权，其全部内容通过引用包括于此。
技术领域
本公开涉及显示技术领域，尤其涉及一种光学元件、导光板、棱镜、背光模组及显示装置。
背景技术
随着科技的发展以及消费者对液晶显示器的新需求，高亮度、低功耗的显示器成为必然的主流发展趋势。现有高亮的显示器，多采用在显示面板上贴附偏光片或者在背光模组(Back Light Unit，BLU)中添加特殊的增量膜来实现，随着亮度的提升，成本也大幅提升了。也有少数采用棱镜(prism)导光板(Light Guide Plate，LGP)搭配逆棱镜(reverse prism)的方法，将LGP上表面做成棱镜，通过LGP下表面网点的特殊设计，且配合逆棱镜，以达到提升亮度的目的。但是存在视角太小，良率偏低等问题。
发明内容
本公开的目的在于提供一种光学元件、导光板、棱镜、背光模组及显示装置，可以在提升亮度的同时，提高视角，解决相关技术中导光板所存在的视角小、良率偏低等技术问题。
本公开所提供的技术方案如下：
一种光学元件，包括一透光基体，所述透光基体包括第一面，在所述第一面上沿一预定方向排列有相互平行且沿另一预定方向延伸的多个条状棱柱体；其中，在多个条状棱柱体的排列方向上，每一所述条状棱柱体在靠近所述透光基体的中心的一侧具有一折射面，所述折射面自靠近所述透光基体的中心的一端至靠近所述透光基体的边缘的一端逐渐向远离所述第一面的方向 倾斜，并且，从距离所述透光基体的中心最近的条状棱柱体向距离所述透光基体的中心最远的条状棱柱体，所述折射面与所述第一面的法线之间的夹角逐渐增大。
进一步地，所述条状棱柱体的横截面为三角形，其中所述横截面平行于多个条状棱柱体的排列方向，并垂直于所述第一面，所述条状棱柱体的横截面三角形包括：第一顶点；连接于所述第一顶点与所述第一面之间的第一边和第二边；其中所述第一边位于所述条状棱柱体的横截面三角形的靠近所述透光基体的中心的一侧，所述条状棱柱体的折射面由所述第一边形成。
进一步地，多个条状棱柱体的排列方向与所述条状棱柱体的延伸方向之间的夹角为90°±1°。
进一步地，在多个条状棱柱体的排列方向上，多个条状棱柱体相对于所述透光基体的中心对称。
进一步地，多个条状棱柱体包括：
在多个条状棱柱体的排列方向上，位于所述透光基体的中心所在位置处的中心棱柱体，所述中心棱柱体包括相对所述透光基体的中心对称的两个折射面；以及，分别位于所述中心棱柱体的两侧的两个侧棱柱体组；
其中，所述中心棱柱体的折射面与所述第一面的法线之间的夹角小于侧棱柱体组中每一条状棱柱体的折射面与所述第一面的法线之间的夹角。
一种导光板，所述导光板采用如上所述的光学元件形成，其中所述第一面为导光板的出光面。
进一步地，所述透光板材还包括与所述第一面相对设置的第二面，其中所述第二面上设置有多个散射网点。
进一步地，每一散射网点结构为扇形结构。
一种棱镜，其采用如上所述的光学元件形成。
进一步地，所述光学元件的透光基体内设置有扩散粒子。
一种背光模组，包括如上所述的导光板。
进一步地，所述背光模组还包括：设置于所述导光板的出光面一侧的如上所述的棱镜，其中所述棱镜的第一面面向所述导光板的第一面设置，且所述棱镜的条状棱柱体与所述导光板的条状棱柱体的延伸方向之间呈预设夹角。
进一步地，所述棱镜的条状棱柱体与所述导光板的条状棱柱体的延伸方向之间的预设夹角为90°。
进一步地，所述棱镜的第一面与所述导光板的第一面之间通过光学胶连接。
一种显示装置，其包括如上所述的背光模组。
本公开的有益效果如下：
本公开所提供的光学元件，作为导光板应用于背光模组中时，可以提高背光模组的光线传播角度，而提升显示器视角，从而解决相关技术中所存在的视角小、良率偏低的问题。
附图说明
为了更清楚地说明本发明实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1表示本公开一些实施例中提供的光学元件的结构示意图；
图2表示本公开一些实施例中提供的导光板的结构示意图；
图3表示本公开一些实施例中提供的棱镜的结构示意图；以及
图4表示本公开一些实施例中提供的背光模组的结构示意图。
具体实施方式
为使本公开的实施例的目的、技术方案和优点更加清楚，下面将结合本公开的实施例的附图，对本公开的实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开文本保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数 量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也相应地改变。
如图1所示，本公开一些实施例中提供了一种光学元件，包括一透光基体100，所述透光基体100包括第一面，在所述第一面上沿一预定方向(例如，第一方向)排列有相互平行且沿另一预定方向(例如，第二方向)延伸的多个条状棱柱体200；其中，在多个条状棱柱体200的排列方向上，每一所述条状棱柱体200在靠近所述透光基体100的中心的一侧具有一折射面201，所述折射面201自靠近所述透光基体100的中心的一端至靠近所述透光基体100的边缘的一端逐渐向远离所述第一面的方向倾斜，并且，从距离所述透光基体100的中心最近的条状棱柱体200向距离所述透光基体100的中心最远的条状棱柱体200，所述折射面201与所述第一面的法线之间的夹角逐渐增大。
在上述方案中，通过在光学元件的透光基体100的上表面上设置由多个条状棱柱体200组成的棱镜结构，且多个条状棱柱体200设计为：以透光基体100的中心为中轴，左、右两边排列，越靠近该透光基体100的边缘，条状棱柱体200的倾角越大，可保证经透过透光基体100表面的棱镜结构所出射的光线不完全垂直于透光基体100的表面而向上出射，增大了光学元件的光传播角度，当该光学元件作为导光板应用于背光模组中时，则可以增大背光模组的视角，从而解决了相关技术中导光板上表面设置棱镜结构时存在视角小的问题。
在本公开一些实施例中提供的光学元件中，可选地，如图1所示，所述条状棱柱体200的横截面为三角形，其中所述横截面平行于在多个条状棱柱体200的排列方向，并垂直于所述第一面，所述条状棱柱体200的横截面三角形包括：第一顶点；连接于所述第一顶点与所述第一面之间的第一边和第二边；其中所述第一边位于所述条状棱柱体200的横截面三角形的靠近所述透光基体100的中心的一侧，所述条状棱柱体200的折射面201由所述第一 边形成。
采用上述方案，每一条状棱柱体200均为横截面呈三角形，应当理解的是，在实际应用中，所述条状棱柱体200的结构还可以是横截面呈梯形等各种形状的条状棱柱体200，仅需保证各条状棱柱体200上的折射面201自中心至边缘倾斜角逐渐增大即可。
此外，在本公开一些实施例中提供的光学元件中，可选地，多个条状棱柱体200的排列方向与所述条状棱柱体200的延伸方向之间夹角为90°±1°。也就是说，透光基体100上由各条状棱柱体200形成的棱镜结构的角度可选为90°±1°。应当理解的是，本公开中仅提供一种可选方案，并不对此作局限。
此外，如图1所示，可选地，在多个条状棱柱体200的排列方向上，多个条状棱柱体200相对于所述透光基体100的中心对称。将多条棱柱体对称分布在透光基体100上，更利于光线均匀地扩散。
以下说明本公开提供的光学元件上多个条状棱柱体200的可选结构。
如图1所示，多个条状棱柱体200包括：
在多个条状棱柱体200的排列方向上，位于所述透光基体100的中心所在位置处的中心棱柱体，所述中心棱柱体包括相对所述透光基体100的中心对称的两个折射面201；以及，分别位于所述中心棱柱体的两侧的两个侧棱柱体组；
其中，所述中心棱柱体的折射面201与所述第一面的法线之间的夹角小于侧棱柱体组中每一条状棱柱体200的折射面201与所述第一面的法线之间的夹角。
上述方案中，多个条状棱柱体200中，中心棱柱体关于透光基体100的中心对称，而位于中心棱柱体两侧的条状棱柱体200关于透光基体100的中心对称，从而实现完全对称。应当理解的是，在实际应用中，对于多个条状棱柱体200的具体结构并不作局限，还可以是采用其他结构。
需要说明的是，本公开一些实施例中所提供的光学元件，其可以作为导光板，还可以作为棱镜，或者，还可以作为可进行光线传播的其他光学元件。
本公开一些实施例中还提供了一种导光板，所述导光板就是采用如上所 述的光学元件形成。也就是说，所述导光板的结构与上述光学元件的结构相同。
具体地，图2所示为本公开一些实施例中提供的导光板的一种结构示意图。
如图2所示，所述导光板10包括一透光基体100，所述透光基体100包括第一面，在所述第一面上沿一预定方向排列有相互平行且沿另一预定方向延伸的多个条状棱柱体200；其中，在多个条状棱柱体200的排列方向上，每一所述条状棱柱体200在靠近所述透光基体100的中心的一侧具有一折射面201，所述折射面201自靠近所述透光基体100的中心的一端至靠近所述透光基体100的边缘的一端逐渐向远离所述第一面的方向倾斜，并且，从距离所述透光基体100的中心最近的条状棱柱体200向距离所述透光基体100的中心最远的条状棱柱体200，所述折射面201与所述第一面的法线之间的夹角逐渐增大。
本公开一些实施例所提供的导光板10应用于背光模组中时，可保证经透光基体100表面的棱镜出射的光线不完全垂直于透光基体100的表面而向上出射，可以增大背光模组的视角，而解决了相关技术中导光板10上表面设置棱柱体时存在视角小的问题。
需要说明的是，在上述方案中，所述排列方向和延伸方向可以分别是导光板10的透光基体100的相邻两侧边缘的延伸方向，其是为了清楚地说明条状棱柱体200的结构，对于所述排列方向和延伸方向并不进行限定。
在本公开一些实施例中提供的光学元件中，可选地，如图2所示，所述条状棱柱体200的横截面为三角形，其中所述横截面平行于多个条状棱柱体200的排列方向，并垂直于所述第一面，所述条状棱柱体200的横截面三角形包括：第一顶点；连接于所述第一顶点与所述第一面之间的第一边和第二边；其中所述第一边位于所述条状棱柱体200的横截面三角形的靠近所述透光基体100的中心的一侧，所述条状棱柱体200的折射面201由所述第一边形成。
采用上述方案，每一条状棱柱体200的横截面为三角形，应当理解的是，在实际应用中，所述条状棱柱体200的结构还可以是横截面为梯形等各种形 状的条状棱柱体200，仅需保证各条状棱柱体200上的折射面201自中心至边缘倾斜角逐渐增大即可。
此外，在本公开一些实施例中提供的导光板10中，可选地，多个条状棱柱体200的排列方向与所述条状棱柱体200的延伸方向之间夹角为90°±1°。采用上述方案，导光板10的透光基体100上由各条状棱柱体200形成的棱镜结构的角度可选为90°±1°，也就是说，各条状棱柱体200的延伸方向与透光基体100的一侧边缘平行，而与另一侧边缘垂直。应当理解的是，本公开中仅提供一种可选方案，并不对此作局限。
此外，如图2所示，可选地，在多个条状棱柱体200的排列方向上，多个条状棱柱体200相对于所述透光基体100的中心对称。将多条棱柱体对称分布在透光基体100上，更利于光线均匀地扩散。
以下说明本公开提供的光学元件上多个条状棱柱体200的可选结构。
如图2所示，多个条状棱柱体200包括：
在多个条状棱柱体200的排列方向上，位于所述透光基体100的中心所在位置处的中心棱柱体，所述中心棱柱体包括相对所述透光基体100的中心对称的两个折射面201；以及，分别位于所述中心棱柱体的两侧的两个侧棱柱体组；
其中，所述中心棱柱体的折射面201与所述第一面的法线之间的夹角小于侧棱柱体组中每一条状棱柱体200的折射面201与所述第一面的法线之间的夹角。
上述方案中，在多个条状棱柱体200中，中心棱柱体关于透光基体100的中心对称，而位于中心棱柱体两侧的条状棱柱体200关于透光基体100的中心对称，而实现完全对称。应当理解的是，在实际应用中，对于多个条状棱柱体200的具体结构并不作局限，还可以是采用其他结构。
此外，在本公开一些实施例中提供的导光板10，其还包括一与所述出光面相对的第二面，在所述第二面上设置有多个散射网点300。所述散射网点300可以设计成扇形或其他不规则形状，并与导光板10的出光面上的棱镜的角度相匹配，以达到最佳出射效果。
此外，本公开一些实施例中还提供了一种棱镜，该棱镜采用本公开一些 实施例中提供的光学元件形成。也就是说，该棱镜的结构与光学元件的结构相同。
图3所示为本公开一些实施例中提供的棱镜的结构示意图。
如图3所示，本公开一些实施例中提供的棱镜包括一透光基体100，所述透光基体100包括第一面，在所述第一面上沿一预定方向排列有相互平行且沿另一预定方向延伸的多个条状棱柱体200；其中，在多个条状棱柱体200的排列方向上，每一所述条状棱柱体200在靠近所述透光基体100的中心的一侧具有一折射面201，所述折射面201自靠近所述透光基体100的中心的一端至靠近所述透光基体100的边缘的一端逐渐向远离所述第一面的方向倾斜，并且，从距离所述透光基体100的中心最近的条状棱柱体200向距离所述透光基体100的中心最远的条状棱柱体200，所述折射面201与所述第一面的法线之间的夹角逐渐增大。
上述方案中，通过将棱镜设置有多个条状棱柱体200组成的棱镜，且多个条状棱柱体200设计为：以透光基体100的中心为中轴，左、右两边排列，越靠近该透光基体100的边缘，条状棱柱体200的倾角越大，可保证经透光基体100表面的棱镜出射的光线不完全垂直于透光基体100的表面而向上出射，增大了光学元件的光传播角度。
在本公开一些实施例中提供的光学元件中，可选地，如图3所示，所述条状棱柱体200的横截面为三角形，其中所述横截面平行于在多个条状棱柱体200的排列方向，并垂直于所述第一面，所述条状棱柱体200的横截面三角形包括：第一顶点；连接于所述第一顶点与所述第一面之间的第一边和第二边；其中所述第一边位于所述条状棱柱体200的横截面三角形的靠近所述透光基体100的中心的一侧，所述条状棱柱体200的折射面201由所述第一边形成。
采用上述方案，每一条状棱柱体200均为横截面呈三角形，应当理解的是，在实际应用中，所述条状棱柱体200的结构还可以是横截面呈梯形等各种形状的棱柱体，仅需保证各条状棱柱体200的折射面201自中心至边缘倾斜角逐渐增大。
此外，在本公开一些实施例中提供的光学元件中，可选地，多个条状棱 柱体200的排列方向与所述条状棱柱体200的延伸方向之间夹角为90°±1°。也就是说，所述透光基体100上由各条状棱柱体200形成的棱镜结构的角度可选为90°±1°。应当理解的是，本公开中仅提供一种可选方案，并不对此作局限。
此外，如图3所示，可选地，在多个条状棱柱体200的排列方向上，多个条状棱柱体200相对于所述透光基体100的中心对称。将多条棱柱体对称分布在透光基体100上，更利于光线均匀地扩散。以下说明本公开提供的棱镜的可选结构：
如图3所示，多个条状棱柱体200包括：
在多个条状棱柱体200的排列方向上，位于所述透光基体100的中心所在位置处的中心棱柱体，所述中心棱柱体包括相对所述透光基体100的中心对称的两个折射面201；以及，分别位于所述中心棱柱体的两侧的两个侧棱柱体组；
其中，所述中心棱柱体的折射面201与所述第一面的法线之间的夹角小于侧棱柱体组中每一条状棱柱体200的折射面201与所述第一面的法线之间的夹角。
上述方案中，多个条状棱柱体200中，中心棱柱体关于透光基体100的中心对称，而位于中心棱柱体两侧的条状棱柱体200关于透光基体100的中心对称，而实现完全对称。应当理解的是，在实际应用中，对于多个条状棱柱体200的具体结构并不作局限，还可以是采用其他结构。
在本公开一些实施例所提供的棱镜中，可选地，如图3所示，所述棱镜的透光基体100内还设置有扩散粒子400。通过设置扩散粒子400来进一步提高扩散均匀性。
如图4所示，本公开的实施例中还提供了一种背光模组，其包括本公开一些实施例中所提供的导光板10。
上述方案中，背光模组采用具有棱镜结构的导光板10，且导光板10的出光面上的多条条状棱柱体200以导光板10的中心为中轴，左、右两边排列，越靠近边缘，条状棱柱体200的倾角越大，从而，可保证经导光板10出光面的棱镜出射的光线的传播角度增大，而解决了相关技术中导光板10上表面设 置棱镜时所存在的视角小的问题。
在本公开一些实施例所提供的背光模组中，可选地，如图4所示，所述背光模组还包括：设置于所述导光板10的出光面一侧的棱镜20，其中所述棱镜20采用本公开一些实施例中所提供的棱镜20，且所述棱镜20的出光面面向所述导光板10的出光面设置。
上述方案中，背光模组采用具有棱镜20的导光板10搭配逆棱镜的设计，且棱镜20上的多条条状棱柱体200以棱镜20的中心为中轴，左、右两边排列，越靠近边缘，条状棱柱体200的倾角越大，从而，增大背光模组的视角，降低不良率产生。
在本公开一些实施例中所提供的背光模组中，可选地，如图4所示，所述棱镜20的条状棱柱体200与所述导光板10的条状棱柱体200的延伸方向之间呈预设夹角，且进一步可选地，所述棱镜20的条状棱柱体200与所述导光板10的条状棱柱体200的延伸方向之间的预设夹角为90°。
也就是说，与导光板10搭配的逆棱镜20中棱镜20的角度与导光板10上表面的棱镜结构的角度差值为90°，可以更好地提升光效，其中，可选地，在逆棱镜20的透光基材中添加扩散粒子400，可以将出射光分布更为均匀，提升视角，此外，采用上述导光板与逆棱镜的搭配结构，可以无需设置上扩散片，而与相关技术中设置上扩散片拥有同样的画面品质。
此外，相关技术中，背光模组中采用导光板与逆棱镜搭配设计时，存在导光板10与逆棱镜20组装困难、良率低的问题。针对上述文本，本公开一些实施例中提供的背光模组，可选地，所述棱镜20的出光面与所述导光板10的出光面之间通过光学胶连接。采用光学胶(OCA，optically clear adhesive)将导光板10与逆棱镜20黏贴在一起，减少组装摩擦损失，进一步提升良率，降低成本。
本公开一些实施例中还提供了一种显示装置，其包括本公开一些实施例中提供的背光模组。
以上所述是本公开的可选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。

Claims (15)

  1. 一种光学元件，包括一透光基体，所述透光基体包括第一面，在所述第一面上沿第一方向排列有相互平行且沿第二方向延伸的多个条状棱柱体，其中，
    在多个条状棱柱体的排列的第一方向上，每一所述条状棱柱体在靠近所述透光基体的中心的一侧具有一折射面，所述折射面自靠近所述透光基体的中心的一端至靠近所述透光基体的边缘的一端逐渐向远离所述第一面的方向倾斜，并且，从距离所述透光基体的中心最近的条状棱柱体向距离所述透光基体的中心最远的条状棱柱体，所述折射面与所述第一面的法线之间的夹角逐渐增大。
  2. 根据权利要求1所述的光学元件，其中，
    所述条状棱柱体的横截面为三角形，其中所述横截面平行于多个条状棱柱体的排列的第一方向，并垂直于所述第一面，所述条状棱柱体的横截面三角形包括：第一顶点；连接于所述第一顶点与所述第一面之间的第一边和第二边；其中所述第一边位于所述条状棱柱体的横截面三角形的靠近所述透光基体的中心的一侧，所述条状棱柱体的折射面由所述第一边形成。
  3. 根据权利要求1所述的光学元件，其中，
    多个条状棱柱体的排列的第一方向与所述条状棱柱体的延伸的第二方向之间的夹角为90°±1°。
  4. 根据权利要求1所述的光学元件，其中，
    在多个条状棱柱体的排列的第一方向上，多个条状棱柱体相对于所述透光基体的中心对称。
  5. 根据权利要求4所述的光学元件，其中，
    多个条状棱柱体包括：
    在多个条状棱柱体的排列的第一方向上，位于所述透光基体的中心所在位置处的中心棱柱体，所述中心棱柱体包括相对所述透光基体的中心对称的两个折射面；以及，分别位于所述中心棱柱体的两侧的两个侧棱柱体组；
    其中，所述中心棱柱体的折射面与所述第一面的法线之间的夹角小于侧 棱柱体组中每一条状棱柱体的折射面与所述第一面的法线之间的夹角。
  6. 一种导光板，采用如权利要求1至5中任一项所述的光学元件形成，其中所述第一面为导光板的出光面。
  7. 根据权利要求6所述的导光板，其中，
    所述透光板材还包括与所述第一面相对设置的第二面，其中在所述第二面上设置有多个散射网点。
  8. 根据权利要求7所述的光学元件，其中，
    每一散射网点结构为扇形结构。
  9. 一种棱镜，采用如权利要求1至5中任一项所述的光学元件形成。
  10. 根据权利要求9所述的棱镜，其中，所述光学元件的透光基体内设置有扩散粒子。
  11. 一种背光模组，包括：如权利要求6至8中任一项所述的导光板。
  12. 根据权利要求11所述的背光模组，还包括：设置于所述导光板的出光面一侧的如权利要求9或10所述的棱镜，其中所述棱镜的第一面面向所述导光板的第一面设置，且所述棱镜的条状棱柱体与所述导光板的条状棱柱体的延伸的第二方向之间呈预设夹角。
  13. 根据权利要求12所述的背光模组，其中，
    所述棱镜的条状棱柱体与所述导光板的条状棱柱体的延伸的第二方向之间的预设夹角为90°。
  14. 根据权利要求12所述的背光模组，其中，
    所述棱镜的第一面与所述导光板的第一面之间通过光学胶连接。
  15. 一种显示装置，包括如权利要求11至14中任一项所述的背光模组。
PCT/CN2016/072264 2015-09-28 2016-01-27 光学元件、导光板、棱镜、背光模组及显示装置 Ceased WO2017054382A1 (zh)

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