CN211236921U - Brightness enhancement film, backlight module and display screen - Google Patents
Brightness enhancement film, backlight module and display screen Download PDFInfo
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- CN211236921U CN211236921U CN201922145402.1U CN201922145402U CN211236921U CN 211236921 U CN211236921 U CN 211236921U CN 201922145402 U CN201922145402 U CN 201922145402U CN 211236921 U CN211236921 U CN 211236921U
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Abstract
The utility model provides a brightness enhancement film, a backlight module and a display screen, wherein the brightness enhancement film comprises a base material and a prism structure layer arranged on the base material; the prism structure layer comprises a plurality of prisms, each prism comprises a base and a pyramid positioned on the base, and the upper surface and the lower surface of the base are connected through the arc surface; the upper part of the prism of the utility model adopts a pyramid, and the lower part adopts a base with a circular structure; for traditional prism structure only two sides refract or reflect light, the pyramid has a plurality of sides, from a plurality of directions to light refraction reflection, so that produce better spotlight phenomenon, promote luminance and transmissivity, the bottom has the circular arc structure simultaneously, one side has the reinforcing effect to the penetrating through of light, can promote luminance again, and then promote backlight unit's luminance, on the other hand, the bottom is the circular arc structure, convex lens effect has, behind the collocation 3D software, make this membrane of adding lustre to have bore hole 3D membrane effect.
Description
Technical Field
The utility model relates to an application of membrane adds lustre to especially relates to a membrane adds lustre to, backlight unit and display screen.
Background
The brightness enhancement film has diversified applications, for example, the brightness enhancement film is applied to a mobile phone screen to realize the unlocking of fingerprints under the screen, the principle of the screen fingerprints is that light penetrates through a cover plate to irradiate the fingerprints according to the self-luminous and ultrathin characteristics of the screen, and the reflected light of the fingerprints penetrates through the screen and returns to a sensor to be identified, so that the unlocking is carried out; in order to improve the recognition degree of fingerprints under a screen, the market has higher and higher requirements on a brightness enhancement film, wherein the increase of transmittance and the improvement of brightness become basic requirements, the traditional brightness enhancement film is composed of a plurality of prism structures and a substrate, only two side faces between two adjacent prism structures are opposite (for example, the cross section of each prism is triangular, and the opposite faces between two adjacent prisms form a V groove or a groove), and the traditional prism structures cannot further meet the requirements of the increase of transmittance and the improvement of brightness.
SUMMERY OF THE UTILITY MODEL
The utility model provides a membrane, backlight unit and display screen add lustre to, the main technical problem who solves is: the existing traditional brightness enhancement film structure formed by a plurality of adjacent prism structures (such as the cross sections of the prisms are triangular, and a V groove or a groove is formed between two adjacent prisms) and a substrate, wherein the two adjacent prism structures only have two opposite side surfaces, cannot further meet the requirements of increasing the transmittance and improving the brightness.
In order to solve the technical problem, the utility model provides a brightness enhancement film, which comprises a substrate and a prism structure layer arranged on the substrate;
the prism structure layer comprises a plurality of prisms, each prism comprises a base and a pyramid positioned on the base, and the upper surface and the lower surface of the base are connected through the arc surface.
Optionally, the length and width of the base range from 10 μm to 100 μm.
Optionally, the base has an upper surface area greater than the area of the base of the pyramid.
Optionally, the area of the upper surface of the base is smaller than the area of the lower surface, so as to form the inclined arc surface.
Optionally, the height of the arc surface of the base is 0.5 μm to 10 μm.
Optionally, the plurality of prisms are arranged in a matrix array.
Optionally, the pyramid in the prisms is a rectangular pyramid, and the conical surfaces of the rectangular pyramid are all isosceles triangles.
Optionally, the vertex angle of the conical surface of the rectangular pyramid is 30-160 degrees.
Further, the utility model also provides a backlight module, this backlight module include as above the membrane that adds lustre to.
Further, the utility model also provides a display screen, this display screen includes as above backlight unit.
Advantageous effects
The utility model provides a brightness enhancement film, a backlight module and a display screen, wherein the brightness enhancement film comprises a base material and a prism structure layer arranged on the base material; the prism structure layer comprises a plurality of prisms, each prism comprises a base and a pyramid positioned on the base, and the upper surface and the lower surface of the base are connected through the arc surface; the utility model discloses a prism upper portion adopts the pyramid, the lower part adopts the base that has the circular arc structure, only refract or reflect light for two sides of traditional prism structure, the pyramid has a plurality of sides, refract the reflection to light from a plurality of directions, so that produce better spotlight phenomenon, promote luminance and transmissivity, the bottom has the circular arc structure simultaneously, there is the reinforcing effect to piercing through of light on the one hand, can promote luminance again, and then promote backlight unit's luminance, on the other hand, the bottom is the circular arc structure, convex lens effect has, behind the collocation 3D software, make this membrane of adding lustre to have bore hole 3D membrane effect.
Drawings
Fig. 1 is a schematic structural diagram of a brightness enhancement film according to various embodiments of the present invention;
fig. 2 is a schematic structural diagram of a prism according to various embodiments of the present invention;
fig. 3 is a schematic structural diagram of a brightness enhancement film according to various embodiments of the present invention;
fig. 4 is a schematic structural diagram three of a brightness enhancement film provided in various embodiments of the present invention;
fig. 5 is a schematic structural diagram of another prism according to various embodiments of the present invention;
fig. 6 is a schematic structural diagram of another prism according to various embodiments of the present invention.
Detailed Description
In order that the contents of the present invention may be more readily understood, the present invention will now be described in further detail with reference to the following detailed description taken in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
in order to solve the problem that the conventional brightness enhancement film structure formed by a plurality of prism strips for converging light and a substrate cannot further satisfy the requirements of increasing transmittance and improving brightness, the present embodiment provides a brightness enhancement film, as shown in fig. 1, the brightness enhancement film includes a substrate 101, and a prism structure layer disposed on the substrate 101; the prism structure layer is composed of a plurality of prisms 102, as shown in fig. 2, the prism 102 includes a base 1021, a pyramid 1022 located on the base, and an upper surface 1021a and a lower surface 1021b of the base are connected through the arc surface 1021 c.
In the present embodiment, the material of the pyramid 1022 and the base 1021 is the same, the pyramid 1022 is located at the center of the base 1021, and the area of the upper surface 1021a of the base 1021 is larger than the area of the bottom surface of the pyramid 1022, so that the surface of the base 1021 can be directly penetrated by vertical light, and other light can be reflected by the conical surface of the pyramid 1022, thereby reducing light damage and improving brightness.
Preferably, as shown in fig. 2, the prisms 102 on the prism structure layer have the same size, shape, and height; of course, in some embodiments, the size, shape, and height of the plurality of prisms 102 on the prism structure layer are different, and they can be flexibly adjusted according to actual requirements; wherein the prisms 102 in this embodiment may be arranged in a matrix array, and the bases 1021 of any two adjacent prisms 102 are connected in sequence, as shown in fig. 2; in some embodiments, the prisms 102 may also be arranged irregularly, for example, the prisms 102 are arranged at unequal intervals, as shown in fig. 3, the intervals between the prisms 102 are unequal, and the intervals are sequentially increased; in some embodiments, as shown in FIG. 4, there is no regularity in the pitch of the prism 102 supports.
Preferably, the base 1021 of the prism 102 is quadrilateral, i.e. the upper surface 1021a and the lower surface 1021b of the base 1021 have four sides; the length W1 and the width W2 of the base 1021 are in the range of 10 μm to 100 μm, but the length W1 and the width W2 of the base 1021 may be equal to or different from each other, for example, W1 is 50 μm and W2 is 20 μm in fig. 2.
It should be noted that, since the upper surface 1021a and the lower surface 1021b of the base 1021 are connected through the arc surface 1021c, in this embodiment, four sides of the lower surface 1021b of the base 1021 are all straight lines, four sides of the upper surface 1021a are arc lines, and the straight line passing through the lower surface 1021b and the arc line of the upper surface 1021a enclose the arc surface 1021c, as shown in fig. 2; in some embodiments, four sides of the upper surface 1021a of the base 1021 may be straight, four sides of the lower surface 1021b may be arc-shaped, and an arc surface 1021c is defined by the straight line of the upper surface 1021a and the arc of the lower surface 1021b, as shown in fig. 5. It is understood that the arc of the arc surface 1021c includes, but is not limited to, a regular arc line, a wavy arc, etc., as shown in fig. 6.
In this embodiment, the arc surface 1021c of the base 1021 may be an inclined arc surface 1021c, preferably, the area of the upper surface 1021a of the base 1021 is smaller than the area of the lower surface 1021b to form the inclined arc surface 1021c, at this time, the upper surface 1021a of the base 1021 can allow a part of vertical light to directly penetrate through, and the light damage is less when a part of light passes through the two inclined arc surfaces 1021c, so that the brightness can be effectively improved and the light penetration is better; of course, in some embodiments, the arc 1021c may also be a vertical arc 1021c, i.e., the upper surface 1021a of the base 1021 has the same area as the lower surface 1021 b.
It is understood that the base 1021 includes four arc surfaces 1021c, and each arc surface 1021c may be the same or different; when the circular arc surface 1021c is different, it may be that the height of the circular arc surface 1021c is different. Preferably, the height of the arc surface 1021c of the base 1021 is in the range of 0.5 μm to 10 μm, and as shown in fig. 2, the height H1 of the arc surface 1021c on the front side is 2 μm, and the height H2 of the arc surface 1021c on the side surface is 1 μm, and the size of the bottom arc surface structure can be adjusted, so that the brightness enhancement film 3D effect in this embodiment is also improved.
It should be noted that, in this embodiment, the pyramid 1022 on the base 1021 may be a regular pyramid 1022, and the pyramid 1022 may also be inclined at any angle according to the requirement, that is, the vertex of the pyramid 1022 may be biased towards any conical surface, where the pyramid 1022 includes, but is not limited to, a triangular pyramid 1022, a rectangular pyramid 1022, a pentagonal pyramid 1022, and the like; since the base 1021 has a quadrilateral shape, the pyramid 1022 is optionally a rectangular pyramid 1022 composed of four conical surfaces. In this embodiment, the four conical surfaces of the rectangular prism are all isosceles triangles, and the vertex angle of each isosceles triangle may be the same or different, wherein the vertex angle of each conical surface of the rectangular pyramid 1022 is 30-160 degrees; for example, the conical surfaces of the rectangular pyramid 1022 are all isosceles triangles, and the apex angle of each conical surface is 90 °.
It is understood that in this embodiment, the substrate 101 includes, but is not limited to, Polyethylene terephthalate (PET) or Polycarbonate (PC), wherein the PET substrate 101 has good thermoplasticity, light specific gravity, chemical corrosion resistance, and the PC substrate 101 has high mechanical properties, good thermal aging resistance, and strong solvent resistance. The material of the prism structure layer includes, but is not limited to, an ultraviolet curable resin selected from epoxy acrylic resin, amino acrylic resin, polyethylene resin, polyurethane acrylic resin, and polyester acrylic resin.
This embodiment provides a membrane of adding lustre to, this membrane of adding lustre to includes the substrate, be located the prism of arranging by a plurality of matrix array on the substrate, wherein the prism includes the base, be located the pyramid on the base, and the area of the upper surface of base is greater than pyramid bottom area, the upper surface of base can let perpendicular light directly pierce through, because pyramid's conical surface quantity is greater than two faces of traditional prism, make the light of other a plurality of directions carry out refraction reflection through the conical surface of a plurality of slopes, light loss is few, effectively promote luminance, the base includes that upper surface and lower surface pass through the arc surface and connect simultaneously, it has the reinforcing effect to pierce through of light, can promote luminance again.
Example two:
this embodiment provides a more specific brightness enhancement film, and the preparation method of this brightness enhancement film is: and extruding and forming a PET or PC raw material to form a base material, coating an ultraviolet curing resin layer on the upper surface of the base material, and carrying out compression molding on the ultraviolet curing resin through a mold wheel with a structure complementary with the prism structure layer to obtain the brightness enhancement film.
As shown in fig. 1, the brightness enhancement film includes a PET substrate, and a prism structure layer on the PET substrate, the prism structure layer is a rectangular array composed of a plurality of prism structures with the same height, the bottoms of the prism structures in each row are sequentially connected, and the bottoms of the prism structures in each column are sequentially connected.
In the present embodiment, the prism includes a base 1021 and a rectangular pyramid 1022 made of the same material, the rectangular pyramid 1022 is located at the center of the base 1021, and the area of the upper surface 1021a of the base 1021 is larger than the area of the bottom surface of the rectangular pyramid 1022. The base 1021 comprises a quadrangle, the length of the base 1021 is 60 μm, the width of the base 1021 is 80 μm, the lower surface 1021b of the base 1021 is a plane defined by four straight lines, and the upper surface 1021a is a plane defined by four arc lines; an upper surface 1021a and a lower surface 1021b of the base 1021 are connected by a circular arc surface 1021c, the circular arc surface 1021c being defined by a straight line of the lower surface 1021b and an arc of the upper surface 1021a, and in particular, the area of the upper surface 1021a of the base 1021 is smaller than that of the lower surface 1021b to form an inclined circular arc surface 1021 c; it can be understood that the base 1021 comprises four arc surfaces 1021c, and each arc surface 1021c has the same height, and the height ranges from 0.5 μm to 10 μm, for example, the height is 4 μm; in this embodiment, the plane of the base 1021 made of the same material as the pyramid 1022 allows vertical light to penetrate through, and partial light is less damaged by the light passing through the two inclined arc surfaces 1021c, so that the brightness can be effectively improved and the light penetration is better.
In this embodiment, the pyramid 1022 structure of the prism may be inclined by any angle according to requirements, each conical surface of the pyramid 1022 is a triangle, and the vertex angle of each conical surface may be equal or unequal, and the vertex angle is 30 to 160 degrees, for example, each conical surface of the pyramid 1022 is an isosceles triangle, and the vertex angle of the triangle is 90 degrees. Four toper structures have four conical surfaces, and than the traditional prism structure of only two faces, to the reflection of a plurality of direction light mechanical energy refraction so that produce better spotlight phenomenon, promote luminance and transmissivity, and the taper angle can be adjusted according to the demand, lets die-cut mould need not angle of adjustment, and product utilization is higher, can increase 1 when the same length diaphragm is die-cut, and the breadth is also narrower relatively moreover.
Example three:
the present embodiment provides a backlight module, which includes the brightness enhancement film of the first and/or second embodiments, where the brightness enhancement film includes a prism structure layer with a substrate disposed on the substrate; the prism structure layer comprises a plurality of prisms arranged in a matrix array, each prism comprises a base and a pyramid positioned on the base, and the upper surface and the lower surface of the base are connected through the arc surface; the specific structure of the brightness enhancement film is as described in the first or second embodiments, and is not described herein again.
This embodiment still provides a display screen, this display screen includes above-mentioned backlight unit, the pyramid structure of the membrane of adding lustre to in this embodiment, multiplicable transmissivity, let the discernment degree of fingerprint promote under the screen, and the pyramid has three conical surfaces at least, only the luminance of two relative tradition prism structures in side is higher and the transmissivity is better than between adjacent, simultaneously add the base of bottom circular arc structure, it can promote luminance again to pierce through of light has the reinforcing effect, can let the discernment degree of fingerprint under the screen become easier, and because the bottom has the effect of bore hole 3D membrane after the convex lens effect collocation 3D software for the circular arc.
It should be understood that the light film provided in this embodiment can be applied to various light emitting fields, for example, it can be manufactured into a backlight module applied to a display backlight field (such as a backlight module of a terminal such as a television, a display, a mobile phone, etc.). It can be applied to a backlight module at this time. The LED lamp can also be applied to the key backlight field, the shooting field, the household lighting field, the medical lighting field, the decoration field, the automobile field, the traffic field and the like. When the LED backlight source is applied to the key backlight field, the LED backlight source can be used as a key backlight light source of mobile phones, calculators, keyboards and other devices with keys; when the camera is applied to the field of shooting, a flash lamp of a camera can be manufactured; when the lamp is applied to the field of household illumination, the lamp can be made into a floor lamp, a table lamp, an illuminating lamp, a ceiling lamp, a down lamp, a projection lamp and the like; when the lamp is applied to the field of medical illumination, the lamp can be made into an operating lamp, a low-electromagnetic illuminating lamp and the like; when the decorative material is applied to the decorative field, the decorative material can be made into various decorative lamps, such as various colored lamps, landscape illuminating lamps and advertising lamps; when the material is applied to the field of automobiles, the material can be made into automobile lamps, automobile indicating lamps and the like; when the lamp is applied to the traffic field, various traffic lights and various street lamps can be manufactured. The applications described above are only a few of the applications exemplified by the present embodiment, and it should be understood that the application of the optical film is not limited to the fields exemplified above.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (10)
1. The brightness enhancement film is characterized by comprising a substrate and a prism structure layer arranged on the substrate;
the prism structure layer comprises a plurality of prisms, each prism comprises a base and a pyramid positioned on the base, and the upper surface and the lower surface of the base are connected through arc surfaces.
2. The brightness enhancement film according to claim 1, wherein the base has a length and a width in a range of 10 μm to 100 μm.
3. The brightness enhancement film according to claim 1, wherein the base has an upper surface area larger than a bottom surface area of the pyramid.
4. The brightness enhancement film according to claim 1, wherein an upper surface area of the base is smaller than the lower surface area.
5. The brightness enhancement film according to claim 1, wherein the height of the arcuate surface of the base is in a range of 0.5 μm to 10 μm.
6. The brightness enhancement film of any one of claims 1-5, wherein the plurality of prisms are arranged in a matrix array.
7. The brightness enhancement film according to claim 6, wherein the pyramids of the prisms are rectangular pyramids, and the tapered surfaces of the rectangular pyramids are isosceles triangles.
8. The brightness enhancement film according to claim 7, wherein an apex angle of a tapered surface of the rectangular pyramid is 30 to 160 degrees.
9. A backlight module, characterized in that the backlight module comprises the brightness enhancement film of any one of claims 1 to 8.
10. A display screen, characterized in that the display screen comprises the backlight module as claimed in claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922145402.1U CN211236921U (en) | 2019-11-29 | 2019-11-29 | Brightness enhancement film, backlight module and display screen |
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| CN201922145402.1U CN211236921U (en) | 2019-11-29 | 2019-11-29 | Brightness enhancement film, backlight module and display screen |
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| CN211236921U true CN211236921U (en) | 2020-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946795A (en) * | 2021-02-04 | 2021-06-11 | 厦门天马微电子有限公司 | Brightness enhancement film, backlight module and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946795A (en) * | 2021-02-04 | 2021-06-11 | 厦门天马微电子有限公司 | Brightness enhancement film, backlight module and display device |
| CN112946795B (en) * | 2021-02-04 | 2022-05-17 | 厦门天马微电子有限公司 | Brightness enhancement film, backlight module and display device |
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