CN204945419U - Optical element, light guide plate, prism, backlight module and display device - Google Patents
Optical element, light guide plate, prism, backlight module and display device Download PDFInfo
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- CN204945419U CN204945419U CN201520759649.1U CN201520759649U CN204945419U CN 204945419 U CN204945419 U CN 204945419U CN 201520759649 U CN201520759649 U CN 201520759649U CN 204945419 U CN204945419 U CN 204945419U
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Abstract
本实用新型提供了一种光学元件、导光板、棱镜、背光模组及显示装置，包括一透光基体，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；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，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。本实用新型所提供的光学元件，作为导光板应用于背光模组中时，可以提升显示器视角，解决现有技术中所存在的视角小，良率偏低的问题。
The utility model provides an optical element, a light guide plate, a prism, a backlight module and a display device. A plurality of strip-shaped prisms extending along another predetermined direction; in the arrangement direction of the plurality of strip-shaped prisms, each strip-shaped prism has a refraction surface on the side close to the center of the light-transmitting substrate, and the refraction surface is close to From one end of the center of the transparent matrix to an end close to the edge of the transparent matrix, it gradually inclines away from the first surface, from the strip prism closest to the center of the transparent matrix to the strip farthest from the center of the transparent matrix. Shaped prism, the angle between the refraction surface and the normal of the first surface gradually increases. When the optical element provided by the utility model is used as a light guide plate in a backlight module, it can improve the viewing angle of a display and solve the problems of small viewing angle and low yield in the prior art.
Description
Technical Field
The utility model relates to a show technical field, especially relate to an optical element, light guide plate, prism, backlight unit and display device.
Background
With the development of technology and the new demand of liquid crystal displays by consumers, high-brightness and low-power-consumption displays become a necessary mainstream trend. The existing high-brightness display is mostly realized by attaching a polarizer on a display panel or adding a special incremental film in a backlight unit (BLU), and the cost is greatly improved along with the improvement of the brightness. And a small number of methods of matching prism LGP with inverse prism are adopted, the upper surface of the LGP is made into the prism, and the purpose of improving the brightness is achieved through the special design of the lower surface mesh points of the LGP and the cooperation of Reverreprism. However, the viewing angle is too small, and the yield is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an optical element, light guide plate, prism, backlight unit and display device can improve the visual angle when promoting luminance, and the visual angle that the light guide plate exists is little among the solution prior art, technical problem such as the yield is on the low side.
The utility model provides a technical scheme as follows:
an optical element comprises a light-transmitting substrate, wherein the light-transmitting substrate comprises a first surface, and a plurality of strip-shaped prisms which are parallel to each other and extend along another predetermined direction are arranged on the first surface along a predetermined direction; in the arrangement direction of the plurality of strip-shaped prisms, each strip-shaped prism has a refraction surface on one side close to the center of the light-transmitting substrate, the refraction surface gradually inclines towards the direction far away from the first surface from one end close to the center of the light-transmitting substrate to one end close to the edge of the light-transmitting substrate, and an included angle between the refraction surface and the normal of the first surface gradually increases from the strip-shaped prism closest to the center of the light-transmitting substrate to the strip-shaped prism farthest from the center of the light-transmitting substrate.
Further, the cross section of the strip-shaped prism is a triangle, wherein the cross section is parallel to the arrangement direction of the plurality of strip-shaped prisms and perpendicular to the first surface, and the triangle of the cross section of the strip-shaped prism includes: a first vertex; a first edge and a second edge connected between the first vertex and the first face; the first edge is positioned on one side of the cross-section triangle of the strip-shaped prism body, which is close to the center of the light-transmitting substrate, and the refraction surface of the strip-shaped prism body is formed by the first edge.
Further, an included angle between the arrangement direction of the plurality of strip-shaped prisms and the extension direction of the strip-shaped prisms is 90 ° ± 1 °.
Further, in the arrangement direction of the plurality of strip-shaped prisms, the plurality of strip-shaped prisms are symmetrical with respect to the center of the light-transmitting substrate.
Further, the plurality of strip-shaped prisms include:
the central prism is positioned at the position of the center of the light-transmitting substrate in the arrangement direction of the strip prisms, and comprises two refraction surfaces which are symmetrical relative to the center of the light-transmitting substrate; and two side prism groups respectively located on both sides of the central prism;
and the included angle between the refracting surface of the central prism and the normal of the first surface is smaller than the included angle between the refracting surface of each strip-shaped prism in the side prism group and the normal of the first surface.
The light guide plate is formed by adopting the optical element, wherein the first surface is a light-emitting surface of the light guide plate.
Further, the light-transmitting plate material further comprises a second surface opposite to the first surface, wherein a plurality of scattering mesh points are arranged on the second surface.
Furthermore, each scattering net point structure is a fan-shaped structure.
A prism formed using the optical element as described above.
Furthermore, diffusion particles are arranged in the light-transmitting matrix of the prism.
A backlight module comprises the light guide plate.
Further, the backlight module further comprises: the prism is arranged on one side of the light emitting surface of the light guide plate, wherein the first surface of the prism is arranged facing the first surface of the light guide plate, and a preset included angle is formed between the strip-shaped prism of the prism and the extending direction of the strip-shaped prism of the light guide plate.
Further, a preset included angle between the strip-shaped prism of the prism and the extending direction of the strip-shaped prism of the light guide plate is 90 °.
Furthermore, the first surface of the prism is connected with the first surface of the light guide plate through optical cement.
A display device comprises the backlight module.
The utility model has the advantages as follows:
the utility model provides an optical element when being applied to backlight unit as the light guide plate, can improve backlight unit's light propagation angle, and promote the display visual angle, the visual angle that exists is little among the solution prior art, the problem that the yield is low on the side.
Drawings
Fig. 1 is a schematic structural diagram of an optical element provided in an embodiment of the present invention;
fig. 2 is a schematic structural view of a light guide plate provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a prism provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides an optical element, including a transparent substrate 100, where the transparent substrate 100 includes a first surface, and a plurality of strip-shaped prisms 200 arranged in parallel with each other along a predetermined direction and extending along another predetermined direction are arranged on the first surface; in the arrangement direction of the plurality of strip-shaped prisms 200, each of the strip-shaped prisms 200 has a refraction surface 201 on a side close to the center of the transparent substrate 100, the refraction surface 201 gradually inclines in a direction away from the first surface from an end close to the center of the transparent substrate 100 to an end close to an edge of the transparent substrate 100, and an included angle between the refraction surface 201 and a normal of the first surface gradually increases from the strip-shaped prism 200 closest to the center of the transparent substrate 100 to the strip-shaped prism 200 farthest from the center of the transparent substrate 100.
In the above scheme, the prism structure composed of the plurality of strip-shaped prisms 200 is disposed on the upper surface of the light-transmitting substrate 100 of the optical element, and the plurality of strip-shaped prisms 200 are designed as follows: the center of the light-transmitting substrate 100 is used as a central axis, the left side and the right side are arranged, the closer to the edge of the light-transmitting substrate 100, the larger the inclination angle of the strip-shaped prism 200 is, the light rays emitted by the prism structure on the surface of the light-transmitting substrate 100 can be ensured to be not completely vertical to the surface of the light-transmitting substrate 100 and be emitted upwards, the light propagation angle of the optical element is increased, when the optical element is used as a light guide plate to be applied to a backlight module, the visual angle of the backlight module can be increased, and the problem that the visual angle is small when the prism structure is arranged on the upper surface of the light.
In the optical element provided in the embodiment of the present invention, preferably, as shown in fig. 1, a cross section of the strip-shaped prism 200 is a triangle, wherein the cross section is parallel to an arrangement direction of the plurality of strip-shaped prisms 200 and perpendicular to the first surface, and the cross section triangle of the strip-shaped prism 200 includes: a first vertex; a first edge and a second edge connected between the first vertex and the first face; wherein the first edge is located on one side of the cross-sectional triangle of the strip-shaped prism body 200, which is close to the center of the light-transmitting substrate 100, and the refractive surface 201 of the strip-shaped prism body 200 is formed by the first edge.
With the above scheme, each strip-shaped prism 200 has a triangular cross section, and it should be understood that, in practical applications, the structure of the strip-shaped prism 200 may also be a strip-shaped prism 200 having a trapezoidal cross section and other various shapes, and it is only necessary to ensure that the inclination angle of the refraction surface 201 on each strip-shaped prism 200 is gradually increased from the center to the edge.
Further, in the optical element provided in the embodiment of the present invention, it is preferable that an included angle between an arrangement direction of the plurality of strip-shaped prisms 200 and an extending direction of the strip-shaped prisms 200 is 90 ° ± 1 °. That is, the angle of the prism structure formed by each of the strip-shaped prisms 200 on the light-transmitting substrate 100 is preferably 90 ° ± 1 °. It should be understood that the present invention provides only one preferred embodiment and is not intended to be limiting.
Further, as shown in fig. 1, it is preferable that the plurality of strip-shaped prisms 200 are symmetrical with respect to the center of the light-transmissive substrate 100 in the arrangement direction of the plurality of strip-shaped prisms 200. The plurality of prisms are symmetrically distributed on the transparent substrate 100, which is more beneficial to uniformly diffusing light.
The following describes a preferred structure of the plurality of strip-shaped prisms 200 of the optical element according to the present invention.
As shown in fig. 1, the plurality of strip-shaped prisms 200 includes:
the central prism is positioned at the position of the center of the light-transmitting substrate 100 in the arrangement direction of the strip-shaped prisms 200, and comprises two refraction surfaces 201 which are symmetrical relative to the center of the light-transmitting substrate 100; and two side prism groups respectively located on both sides of the central prism;
wherein the included angle between the refracting surface 201 of the central prism and the normal of the first surface is smaller than the included angle between the refracting surface 201 of each strip-shaped prism 200 in the side prism group and the normal of the first surface.
In the above scheme, the central prism of the plurality of strip-shaped prisms 200 is symmetrical with respect to the center of the transparent substrate 100, and the strip-shaped prisms 200 located at both sides of the central prism are symmetrical with respect to the center of the transparent substrate 100, so that complete symmetry is achieved. It should be understood that, in practical applications, the specific structure of the plurality of strip-shaped prisms 200 is not limited, and other structures may also be adopted.
It should be noted that the optical element provided in the embodiments of the present invention may be used as a light guide plate, a prism, or other optical elements capable of transmitting light.
The embodiment of the utility model provides an in still provide a light guide plate, the light guide plate just adopts optical element as above to form. That is, the structure of the light guide plate is the same as that of the optical element described above.
Specifically, fig. 2 is a schematic structural diagram of a light guide plate according to an embodiment of the present invention.
As shown in fig. 2, the light guide plate 10 includes a light transmissive substrate 100, where the light transmissive substrate 100 includes a first surface on which a plurality of strip-shaped prisms 200 are arranged in parallel to each other along a predetermined direction and extend along another predetermined direction; in the arrangement direction of the plurality of strip-shaped prisms 200, each of the strip-shaped prisms 200 has a refraction surface 201 on a side close to the center of the transparent substrate 100, the refraction surface 201 gradually inclines in a direction away from the first surface from an end close to the center of the transparent substrate 100 to an end close to an edge of the transparent substrate 100, and an included angle between the refraction surface 201 and a normal of the first surface gradually increases from the strip-shaped prism 200 closest to the center of the transparent substrate 100 to the strip-shaped prism 200 farthest from the center of the transparent substrate 100.
The embodiment of the utility model provides a when light guide plate 10 is applied to backlight unit, can guarantee through the incomplete perpendicular to printing opacity base member 100's of the light of the prism outgoing on printing opacity base member 100 surface and upwards go out, can increase backlight unit's visual angle, and solved and had the problem that the visual angle is little when light guide plate 10 upper surface sets up the prism among the prior art.
In the above embodiment, the arrangement direction and the extending direction may be respectively extending directions of two adjacent side edges of the light-transmitting substrate 100 of the light guide plate 10, which are for clearly illustrating the structure of the strip-shaped prism 200, and the arrangement direction and the extending direction are not limited.
In the optical element provided in the embodiment of the present invention, preferably, as shown in fig. 2, a cross section of the strip-shaped prism 200 is a triangle, wherein the cross section is parallel to an arrangement direction of the plurality of strip-shaped prisms 200 and perpendicular to the first surface, and the cross section triangle of the strip-shaped prism 200 includes: a first vertex; a first edge and a second edge connected between the first vertex and the first face; wherein the first edge is located on one side of the cross-sectional triangle of the strip-shaped prism body 200, which is close to the center of the light-transmitting substrate 100, and the refractive surface 201 of the strip-shaped prism body 200 is formed by the first edge.
With the above scheme, the cross section of each strip-shaped prism 200 is triangular, and it should be understood that, in practical applications, the structure of the strip-shaped prism 200 may also be a strip-shaped prism 200 with a cross section in various shapes such as a trapezoid, and it is only necessary to ensure that the inclination angle of the refraction surface 201 on each strip-shaped prism 200 gradually increases from the center to the edge.
Further, in the light guide plate 10 provided in the embodiment of the present invention, it is preferable that an included angle between the arrangement direction of the plurality of strip-shaped prisms 200 and the extending direction of the strip-shaped prisms 200 is 90 ° ± 1 °. With the above-mentioned scheme, the angle of the prism structure formed by each of the strip-shaped prisms 200 on the light-transmitting substrate 100 of the light-guiding plate 10 is preferably 90 ° ± 1 °, that is, the extending direction of each of the strip-shaped prisms 200 is parallel to one side edge of the light-transmitting substrate 100 and perpendicular to the other side edge. It should be understood that the present invention provides only one preferred embodiment and is not intended to be limiting.
Further, as shown in fig. 2, it is preferable that the plurality of strip-shaped prisms 200 are symmetrical with respect to the center of the light-transmissive substrate 100 in the arrangement direction of the plurality of strip-shaped prisms 200. The plurality of prisms are symmetrically distributed on the transparent substrate 100, which is more beneficial to uniformly diffusing light.
The following describes a preferred structure of the plurality of strip-shaped prisms 200 of the optical element according to the present invention.
As shown in fig. 2, the plurality of strip-shaped prisms 200 includes:
the central prism is positioned at the position of the center of the light-transmitting substrate 100 in the arrangement direction of the strip-shaped prisms 200, and comprises two refraction surfaces 201 which are symmetrical relative to the center of the light-transmitting substrate 100; and two side prism groups respectively located on both sides of the central prism;
wherein the included angle between the refracting surface 201 of the central prism and the normal of the first surface is smaller than the included angle between the refracting surface 201 of each strip-shaped prism 200 in the side prism group and the normal of the first surface.
In the above scheme, the central prism of the plurality of strip-shaped prisms 200 is symmetrical with respect to the center of the transparent substrate 100, and the strip-shaped prisms 200 located at both sides of the central prism are symmetrical with respect to the center of the transparent substrate 100, so that complete symmetry is achieved. It should be understood that, in practical applications, the specific structure of the plurality of strip-shaped prisms 200 is not limited, and other structures may also be adopted.
In addition, the light guide plate 10 provided in the embodiment of the present invention further includes a second surface opposite to the light emitting surface, and the second surface is provided with a plurality of scattering dots 300. The scattering dots 300 may be designed in a fan shape or other irregular shapes, and match with the angle of the prism on the light-emitting surface of the light guide plate 10, so as to achieve the best light-emitting effect.
Furthermore, the embodiment of the present invention provides a prism, which is used for the optical element provided in the embodiment of the present invention. That is, the structure of the prism is the same as that of the optical element.
Fig. 3 is a schematic structural diagram of a prism provided in an embodiment of the present invention.
As shown in fig. 3, the prism provided in the embodiment of the present invention includes a transparent substrate 100, where the transparent substrate 100 includes a first surface on which a plurality of strip-shaped prisms 200 are arranged along a predetermined direction, the strip-shaped prisms being parallel to each other and extending along another predetermined direction; in the arrangement direction of the plurality of strip-shaped prisms 200, each of the strip-shaped prisms 200 has a refraction surface 201 on a side close to the center of the transparent substrate 100, the refraction surface 201 gradually inclines in a direction away from the first surface from an end close to the center of the transparent substrate 100 to an end close to an edge of the transparent substrate 100, and an included angle between the refraction surface 201 and a normal of the first surface gradually increases from the strip-shaped prism 200 closest to the center of the transparent substrate 100 to the strip-shaped prism 200 farthest from the center of the transparent substrate 100.
In the above scheme, the prism is provided with a prism composed of a plurality of strip-shaped prisms 200, and the plurality of strip-shaped prisms 200 are designed as follows: the center of the transparent substrate 100 is used as a central axis, the left side and the right side are arranged, the closer to the edge of the transparent substrate 100, the larger the inclination angle of the strip-shaped prism 200 is, the light rays emitted by the prism on the surface of the transparent substrate 100 can be ensured to be not completely vertical to the surface of the transparent substrate 100 and emitted upwards, and the light propagation angle of the optical element is increased.
In the optical element provided in the embodiment of the present invention, preferably, as shown in fig. 3, a cross section of the strip-shaped prism 200 is a triangle, wherein the cross section is parallel to an arrangement direction of the plurality of strip-shaped prisms 200 and perpendicular to the first surface, and the cross section triangle of the strip-shaped prism 200 includes: a first vertex; a first edge and a second edge connected between the first vertex and the first face; wherein the first edge is located on one side of the cross-sectional triangle of the strip-shaped prism body 200, which is close to the center of the light-transmitting substrate 100, and the refractive surface 201 of the strip-shaped prism body 200 is formed by the first edge.
With the above scheme, each of the strip-shaped prisms 200 is a prism having a triangular cross section, and it should be understood that, in practical applications, the structure of the strip-shaped prism 200 may also be a prism having a trapezoidal cross section and other various shapes, and it is only necessary to ensure that the inclination angle of the refraction surface 201 of each strip-shaped prism 200 is gradually increased from the center to the edge.
Further, in the optical element provided in the embodiment of the present invention, it is preferable that an included angle between an arrangement direction of the plurality of strip-shaped prisms 200 and an extending direction of the strip-shaped prisms 200 is 90 ° ± 1 °. That is, the angle of the prism structure formed by each of the strip-shaped prisms 200 on the light-transmitting substrate 100 is preferably 90 ° ± 1 °. It should be understood that the present invention provides only one preferred embodiment and is not intended to be limiting.
Further, as shown in fig. 3, it is preferable that the plurality of strip-shaped prisms 200 are symmetrical with respect to the center of the light-transmissive substrate 100 in the arrangement direction of the plurality of strip-shaped prisms 200. The plurality of prisms are symmetrically distributed on the transparent substrate 100, which is more beneficial to uniformly diffusing light. The following describes a preferred structure of the prism provided by the present invention:
as shown in fig. 3, the plurality of strip-shaped prisms 200 includes:
the central prism is positioned at the position of the center of the light-transmitting substrate 100 in the arrangement direction of the strip-shaped prisms 200, and comprises two refraction surfaces 201 which are symmetrical relative to the center of the light-transmitting substrate 100; and two side prism groups respectively located on both sides of the central prism;
wherein the included angle between the refracting surface 201 of the central prism and the normal of the first surface is smaller than the included angle between the refracting surface 201 of each strip-shaped prism 200 in the side prism group and the normal of the first surface.
In the above scheme, the central prism of the plurality of strip-shaped prisms 200 is symmetrical with respect to the center of the transparent substrate 100, and the strip-shaped prisms 200 located at both sides of the central prism are symmetrical with respect to the center of the transparent substrate 100, so that complete symmetry is achieved. It should be understood that, in practical applications, the specific structure of the plurality of strip-shaped prisms 200 is not limited, and other structures may also be adopted.
In the prism provided in the embodiment of the present invention, preferably, as shown in fig. 3, diffusion particles 400 are further disposed in the light-transmitting matrix 100 of the prism. Diffusion uniformity is further improved by providing diffusion particles 400.
As shown in fig. 4, the embodiment of the present invention further provides a backlight module, which includes the light guide plate 10 provided in the embodiment of the present invention.
In the above scheme, the backlight module adopts the light guide plate 10 with a prism structure, and the plurality of strip-shaped prisms 200 on the light-emitting surface of the light guide plate 10 are arranged with the center of the light guide plate 10 as the central axis and the left and right sides thereof being closer to the edge, the larger the inclination angle of the strip-shaped prisms 200 is, thereby ensuring that the propagation angle of the light emitted by the prisms on the light-emitting surface of the light guide plate 10 is increased, and solving the problem of small viewing angle when the prisms are arranged on the upper surface of the light guide plate 10 in the prior art.
In the backlight module provided in the embodiments of the present invention, preferably, as shown in fig. 4, the backlight module further includes: set up in prism 20 on one side of the light-emitting surface of light guide plate 10, wherein prism 20 adopts the utility model discloses the embodiment provides a prism 20, just the light-emitting surface of prism 20 faces the light-emitting surface setting of light guide plate 10.
In the above scheme, the backlight module adopts a design that the light guide plate 10 with the prism 20 is matched with the inverse prism, and the plurality of strip-shaped prisms 200 on the prism 20 use the center of the prism 20 as the central axis, the left side and the right side are arranged, and the closer to the edge, the larger the inclination angle of the strip-shaped prisms 200 is, thereby increasing the visual angle of the backlight module and reducing the generation of defective rate.
In the backlight module provided in the embodiment of the present invention, preferably, as shown in fig. 4, a preset included angle is formed between the strip-shaped prism 200 of the prism 20 and the extending direction of the strip-shaped prism 200 of the light guide plate 10, and further preferably, the preset included angle is 90 ° between the strip-shaped prism 200 of the prism 20 and the extending direction of the strip-shaped prism 200 of the light guide plate 10.
That is to say, the angle difference between the prism 20 in the inverse prism 20(Reverseprism) matched with the light guide plate 10 and the prism structure (prism) on the upper surface of the light guide plate 10 is 90 °, so as to better improve the light efficiency, wherein, preferably, the diffusion particles 400 are added in the light-transmitting substrate of the inverse prism 20(Reverseprism), so as to more uniformly distribute the emergent light and improve the viewing angle, and in addition, the light guide plate and the inverse prism matched structure are adopted, so that the diffusion sheet does not need to be arranged, and the diffusion sheet has the same picture quality as the diffusion sheet arranged in the prior art.
In addition, when the backlight module adopts a light guide plate and inverse prism assembly, the light guide plate 10 and the inverse prism 20 are difficult to assemble, and the yield is low. To the above text, the backlight module provided in the embodiment of the present invention, preferably, the light emitting surface of the prism 20 is connected to the light emitting surface of the light guide plate 10 through an optical adhesive. The light guide plate 10 and the inverse prism 20 are adhered together by using OCR optical cement, so that the assembly friction loss is reduced, the yield is further improved, and the cost is reduced.
The embodiment of the utility model provides an in still provide a display device, it includes the embodiment of the utility model provides an in the embodiment provide a backlight unit.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (15)
1. An optical element is characterized by comprising a light-transmitting substrate, wherein the light-transmitting substrate comprises a first surface, and a plurality of strip-shaped prisms which are parallel to each other and extend along another predetermined direction are arranged on the first surface along a predetermined direction; wherein,
in the arrangement direction of the plurality of strip-shaped prisms, each strip-shaped prism has a refraction surface on one side close to the center of the light-transmitting substrate, the refraction surface gradually inclines towards the direction far away from the first surface from one end close to the center of the light-transmitting substrate to one end close to the edge of the light-transmitting substrate, and an included angle between the refraction surface and the normal of the first surface gradually increases from the strip-shaped prism closest to the center of the light-transmitting substrate to the strip-shaped prism farthest from the center of the light-transmitting substrate.
2. The optical element according to claim 1,
the cross section of the strip-shaped prism is triangular, wherein the cross section is parallel to the arrangement direction of the plurality of strip-shaped prisms and is perpendicular to the first surface, and the triangular cross section of the strip-shaped prism comprises: a first vertex; a first edge and a second edge connected between the first vertex and the first face; the first edge is positioned on one side of the cross-section triangle of the strip-shaped prism body, which is close to the center of the light-transmitting substrate, and the refraction surface of the strip-shaped prism body is formed by the first edge.
3. The optical element according to claim 1,
the included angle between the arrangement direction of the strip-shaped prisms and the extension direction of the strip-shaped prisms is 90 degrees +/-1 degrees.
4. The optical element according to claim 1,
in the arrangement direction of the plurality of strip-shaped prisms, the plurality of strip-shaped prisms are symmetrical relative to the center of the light-transmitting substrate.
5. The optical element according to claim 4,
the plurality of strip-shaped prisms include:
the central prism is positioned at the position of the center of the light-transmitting substrate in the arrangement direction of the strip prisms, and comprises two refraction surfaces which are symmetrical relative to the center of the light-transmitting substrate; and two side prism groups respectively located on both sides of the central prism;
and the included angle between the refracting surface of the central prism and the normal of the first surface is smaller than the included angle between the refracting surface of each strip-shaped prism in the side prism group and the normal of the first surface.
6. A light guide plate, wherein the light guide plate is formed by using the optical element according to any one of claims 1 to 5, wherein the first surface is a light-emitting surface of the light guide plate.
7. The light guide plate according to claim 6,
the light-transmitting plate further comprises a second surface opposite to the first surface, wherein a plurality of scattering net points are arranged on the second surface.
8. The light guide plate according to claim 6,
each scattering net point structure is a fan-shaped structure.
9. A prism formed using the optical element according to any one of claims 1 to 5.
10. The prism of claim 9, wherein diffusing particles are disposed within a light-transmissive matrix of the prism.
11. A backlight module, comprising: the light guide plate according to any one of claims 6 to 8.
12. A backlight module according to claim 11, further comprising: the prism as claimed in any one of claims 9 or 10 disposed on one side of the light-emitting surface of the light guide plate, wherein the first surface of the prism faces the first surface of the light guide plate, and a predetermined included angle is formed between the strip-shaped prism of the prism and the extending direction of the strip-shaped prism of the light guide plate.
13. The backlight module according to claim 12,
the preset included 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 degrees.
14. The backlight module according to claim 12,
the first surface of the prism is connected with the first surface of the light guide plate through optical cement.
15. A display device comprising the backlight module according to claims 11 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520759649.1U CN204945419U (en) | 2015-09-28 | 2015-09-28 | Optical element, light guide plate, prism, backlight module and display device |
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| CN201520759649.1U CN204945419U (en) | 2015-09-28 | 2015-09-28 | Optical element, light guide plate, prism, backlight module and display device |
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| CN204945419U true CN204945419U (en) | 2016-01-06 |
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| CN201520759649.1U Expired - Fee Related CN204945419U (en) | 2015-09-28 | 2015-09-28 | Optical element, light guide plate, prism, backlight module and display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116477A (en) * | 2015-09-28 | 2015-12-02 | 京东方科技集团股份有限公司 | Optical element, light guide plate, prism, backlight module and display device |
| CN109031508A (en) * | 2018-08-17 | 2018-12-18 | 京东方科技集团股份有限公司 | Light emitting module and display device |
| CN112368511A (en) * | 2018-06-22 | 2021-02-12 | 亮视技术公司 | Vertically integrated transmissive microstructures for transforming light having Lambertian distribution |
-
2015
- 2015-09-28 CN CN201520759649.1U patent/CN204945419U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116477A (en) * | 2015-09-28 | 2015-12-02 | 京东方科技集团股份有限公司 | Optical element, light guide plate, prism, backlight module and display device |
| WO2017054382A1 (en) * | 2015-09-28 | 2017-04-06 | 京东方科技集团股份有限公司 | Optical element, light guide plate, prism, backlight unit and display apparatus |
| CN105116477B (en) * | 2015-09-28 | 2018-10-09 | 京东方科技集团股份有限公司 | Optical element, light guide plate, prism, backlight module and display device |
| US10132966B2 (en) | 2015-09-28 | 2018-11-20 | Boe Technology Group Co., Ltd. | Optical element including strip-shaped prisms, light guide plate, prism, backlight module and display device |
| CN112368511A (en) * | 2018-06-22 | 2021-02-12 | 亮视技术公司 | Vertically integrated transmissive microstructures for transforming light having Lambertian distribution |
| US11441756B2 (en) | 2018-06-22 | 2022-09-13 | Brightview Technologies, Inc. | Vertically integrated transmissive microstructures for transforming light having Lambertian distribution |
| CN109031508A (en) * | 2018-08-17 | 2018-12-18 | 京东方科技集团股份有限公司 | Light emitting module and display device |
| US10712489B2 (en) | 2018-08-17 | 2020-07-14 | Boe Technology Group Co., Ltd. | Light-emitting module and display apparatus |
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