CN111381308A - Light guide film, combined structure comprising light guide film, backlight module and display device - Google Patents

Light guide film, combined structure comprising light guide film, backlight module and display device Download PDF

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Publication number
CN111381308A
CN111381308A CN201811621876.2A CN201811621876A CN111381308A CN 111381308 A CN111381308 A CN 111381308A CN 201811621876 A CN201811621876 A CN 201811621876A CN 111381308 A CN111381308 A CN 111381308A
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CN
China
Prior art keywords
microstructure
light
light guide
area
guide film
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.)
Pending
Application number
CN201811621876.2A
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Chinese (zh)
Inventor
吴俊毅
陈蔚轩
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.)
Radiant Opto Electronics Nanjing Co Ltd
Original Assignee
Radiant Opto Electronics Nanjing 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 Radiant Opto Electronics Nanjing Co Ltd filed Critical Radiant Opto Electronics Nanjing Co Ltd
Priority to CN201811621876.2A priority Critical patent/CN111381308A/en
Publication of CN111381308A publication Critical patent/CN111381308A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • 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
    • G02B6/0055—Reflecting element, sheet or layer

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention relates to a light guide film, a combined structure comprising the light guide film, a backlight module and a display device. The light guide film comprises a body with a first microstructure area and a blank area and at least one second microstructure area. The second microstructure area is arranged in the blank area of the body. When attaching on the leaded light membrane from type paper, the area of contact between type paper and the leaded light membrane can be reduced in the second micro-structure district, and then reduces the stickness between type paper and the leaded light membrane, makes the operation personnel can peel off from type paper with bare-handed mode and need not to adhere the mode through the sticky tape from this. Therefore, the operation convenience and the operation efficiency can be effectively improved, and the risk of colloid residue on the light guide film can be avoided.

Description

Light guide film, combined structure comprising light guide film, backlight module and display device
Technical Field
The present invention relates to light guide elements, and more particularly to a light guide film and applications thereof in a backlight module and a display device.
Background
The display device of the prior art mainly utilizes the backlight module to provide a backlight source for the display panel, so that the display device displays a picture for a user to view. The backlight module is provided with a light source adjacent to the light incident surface of the light guide film, and the optical microstructures on the light guide film can reflect light incident from the light source so as to enable the light to be emitted from the light emergent surface of the light guide film.
The light guide film of the backlight module is provided with a microstructure area and a blank area surrounding the microstructure area, and the optical microstructure is coated in the microstructure area of the light guide film. In order to avoid damage to the optical microstructure on the light guide film during transportation of the light guide film to the assembly area after manufacturing, release paper is attached to the light guide film. When the operator wants to assemble the backlight module, the operator must peel off the release paper adhered to the light guide film to set the light guide film.
Because the blank area that distributes in the peripheral of the micro-structure district of leaded light membrane is smooth surface, consequently when attaching on leaded light membrane from type paper, attached in the blank area of leaded light membrane from type paper can be difficult to peel off. Therefore, when the release paper is peeled off by an operator, the adhesive tape is firstly attached to the release paper, and then the release paper is separated from the light guide film by pulling the adhesive tape. However, as mentioned above, in the operation of peeling the release paper, the worker must first use a section of tape to peel the release paper, which not only causes inconvenience in the peeling operation, but also causes a problem that the adhesive remains on the light guiding film after peeling the release paper.
Disclosure of Invention
The main objective of the present invention is to provide a light guiding film, a combined structure of the light guiding film and a release paper, a backlight module and a display device, so as to solve the problems of inconvenience in peeling operation and easy occurrence of adhesive residue when peeling the release paper of the conventional light guiding film.
In order to achieve the above object, the light guide film of the present invention comprises: the optical surface comprises a first microstructure area and a blank area, and the blank area surrounds the periphery of the first microstructure area; and at least one second microstructure area arranged in the blank area of the optical surface.
According to an embodiment of the present invention, the second microstructure region is located adjacent to a corner of the body.
According to an embodiment of the present invention, the second microstructure region is adjacent to the light incident surface of the body.
According to an embodiment of the present invention, the second microstructure region is disposed at an edge of the body.
According to an embodiment of the invention, the second microstructure protrudes out of the optical face of the body.
According to an embodiment of the present invention, a blank space is formed between the second microstructure region and the first microstructure region.
According to an embodiment of the invention, the second microstructure region is connected to the first microstructure region.
According to an embodiment of the present invention, the body has a plurality of side edges and a plurality of arc-shaped corners, each arc-shaped corner connecting adjacent side edges, the second microstructure area extending from the arc-shaped corner toward the side edge.
According to an embodiment of the invention, the optical surface of the body is a reflective surface.
In addition, in order to achieve the above object, the present invention provides a combined structure of a light guide film and a release paper, comprising: the light directing film as previously described; and the release paper is attached to the optical surface of the light guide film, and part of the outer edge of the release paper is positioned on the second microstructure area of the light guide film.
In addition, the present invention also provides a backlight module, which comprises: the light directing film as previously described; and the light source is arranged adjacent to the light incident surface of the light guide film.
Furthermore, the present invention provides a display device, comprising: the backlight module as described above; and the display panel is positioned in front of the light guide film of the backlight module.
According to the light guide film, the second microstructure area is arranged in the blank area of the optical surface, so that when the release paper is attached to the light guide film, the microstructures on the second microstructure area can reduce the contact area between the light guide film and the release paper, and further reduce the viscosity between the release paper and the light guide film, and therefore an operator can directly peel the release paper in a free-hand mode without adhering the release paper through an adhesive tape. Therefore, the operation convenience and the operation efficiency can be effectively improved, and the risk of colloid residue on the light guide film can be avoided.
Drawings
FIG. 1 is a schematic view of a light guiding film according to a first preferred embodiment of the present invention.
FIG. 2 is a schematic view of a light guiding film according to a second preferred embodiment of the present invention.
FIG. 3 is a schematic view of a light guiding film according to a third preferred embodiment of the present invention.
Fig. 4 is a schematic perspective view of a combination structure of a light guide film and release paper according to the present invention.
FIG. 5 is a schematic top view of a backlight module according to the present invention.
Fig. 6 is a schematic top view of a display device according to the present invention.
Detailed Description
Referring to fig. 1 to 3, several preferred embodiments of the light guiding film of the present invention include a body 10 and at least one second microstructure area 20.
The body 10 includes a light incident surface 11, a light reflection surface 12 and an optical surface 13, the light incident surface 11 and the light reflection surface 12 are respectively located at two opposite sides of the optical surface 13, the optical surface 13 includes a first microstructure region 14 and a blank region 15, and the blank region 15 surrounds the periphery of the first microstructure region 14. The optical surface 13 may be a reflection surface or a light emitting surface. In the preferred embodiment of the present invention, the optical surface 13 is a reflective surface.
In more detail, the blank region 15 may be in a closed surrounding state, such as an O-shape, or may be in a non-closed surrounding state, such as a C-shape or a U-shape. The first microstructure area 14 may be polygonal. Therefore, the blank region 15 is located outside the first microstructure region 14 and between each edge of the first microstructure region 14 and the edge of the body 10. For example, when the first microstructure area 14 is a quadrilateral, the blank area 15 may be located outside four edges of the first microstructure area 14, or the blank area 15 may also be located outside two or more edges of the first microstructure area 14. In addition, the first microstructure area 14 may also be circular, and in this case, the blank area 15 is annular and located between the edge of the first microstructure area 14 and the side edge 17 of the body 10.
The second microstructure area 20 is disposed in the blank area 15 of the optical surface 13, wherein the second microstructure area 20 is located at a position adjacent to a corner of the body 10, and the position can be selected to be close to the light incident surface 11 or the light anti-incident surface 12 of the body 10. As shown in fig. 1, in the first preferred embodiment, the second microstructure region 20 is adjacent to the light incident surface 12 of the main body 10, so as to ensure that the light path of the light entering the light guiding film of the present invention is not interfered by the dots of the second microstructure region 20. Furthermore, the second microstructure 20 protrudes out of the optical surface 13 of the body 10.
As shown in FIG. 1, in the first preferred embodiment of the light guiding film of the present invention, the second microstructure region 20 is connected to the first microstructure region 14.
As shown in FIG. 2, in the second preferred embodiment of the light guiding film of the present invention, a blank space is formed between the second microstructure region 20 and the first microstructure region 14. In the process of manufacturing the microstructure of the light guide film of the present invention, the bumps are formed in the first microstructure region 14 and the bumps are formed in the second microstructure region 20 at the same time. Thus, the film stripping efficiency can be effectively improved without increasing the procedure or difficulty of the manufacturing process.
Further, as shown in fig. 3, in a third preferred embodiment of the light guiding film of the present invention, the second microstructure region 20 is disposed at the edge of the body 10. As shown in fig. 3, the body 10 has a plurality of side edges 17 and a plurality of curved corners 16, each curved corner 16 connecting adjacent side edges 17. The second microstructure area 20 extends from the curved corner 16 toward the side edge 17. When manufacturing the light guiding film according to the third preferred embodiment of the present invention, the second microstructure area 20 is formed at the edge of the body 10 and is formed into an arc-shaped area, and then the corner of the body 10 is cut by the cutter to form the arc-shaped corner 16 on the body 10, so that the second microstructure area 20 is located at the end edge of the body 10.
Referring to fig. 4, a preferred embodiment of the light guiding film and release paper combination structure of the present invention includes the light guiding film and the release paper 30.
The release paper 30 is attached to the optical surface 13 of the light guiding film, and a part of the outer edge of the release paper 30 is located on the second microstructure area 20 of the light guiding film.
Referring to fig. 5, a backlight module according to a preferred embodiment of the present invention includes the light guide film and the light source 40, wherein the light source 40 is adjacent to the light incident surface 11 of the light guide film.
Referring to fig. 6, a display device according to a preferred embodiment of the invention includes the backlight module and the display panel 50, wherein the display panel 50 is located in front of the light guiding film of the backlight module.
Referring to fig. 3, taking the third preferred embodiment of the light guiding film of the present invention as an example, when the release paper 30 is attached to the light guiding film, the microstructures on the second microstructure region 20 can reduce the contact area between the light guiding film and the release paper 30, and reduce the adhesion between the release paper 30 and the light guiding film. Therefore, the worker can peel the release paper 30 directly by hand without using an adhesive tape to peel the release paper 30. Thus, the work efficiency of stripping the release paper 30 can be effectively improved, and the risk of colloid residue on the light guide film can be avoided.
In addition, as shown in fig. 3, the second microstructure region 20 is disposed at the edge of the main body 10, so that an operator can directly peel the release paper 30 from the edge of the light guide film, thereby further improving the convenience and efficiency of the peeling operation of the release paper 30. Moreover, the arc-shaped edge of the body 10 is helpful to reduce the difficulty of stripping operation for operators.
In summary, the light guiding film of the present invention can reduce the contact area of the release paper 30 when the release paper 30 is attached to the light guiding film by the second microstructure regions 20 disposed in the blank region 15 of the optical surface 13, thereby reducing the adhesion between the release paper 30 and the light guiding film, so that the worker can directly peel the release paper 30 by hand without adhering tape. Therefore, the operation convenience and the operation efficiency can be effectively improved, and the risk of colloid residue on the light guide film can be avoided.
[ List of reference numerals ]
10 main body 11 light incident surface
12 reflection-in surface 13 optical surface
14 first microstructure area 15 blank area
16 arc corner 17 side edge
20 second microstructure area 30 release paper
40 light source 50 displays the panel.

Claims (12)

1. A light directing film, comprising:
the optical surface comprises a first microstructure area and a blank area, and the blank area surrounds the periphery of the first microstructure area; and
at least one second microstructure area is arranged in the blank area of the optical surface.
2. The light directing film of claim 1, wherein the second microstructure regions are located adjacent to corners of the body.
3. The light directing film of claim 2, wherein the second microstructure region is adjacent to the light incident counter surface of the body.
4. A light directing film according to any of claims 1 to 3, wherein the second microstructure regions are provided at the edges of the body.
5. The light directing film of any of claims 1-3, wherein the second microstructures protrude out of the optical surface of the body.
6. A light directing film according to any of claims 1 to 3, wherein a blank space is formed between the second microstructure region and the first microstructure region.
7. The light directing film of any of claims 1-3, wherein the second microstructure regions are connected to the first microstructure regions.
8. The light directing film of any of claims 1-3, wherein the body has a plurality of side edges and a plurality of curved corners, each curved corner connecting adjacent side edges, the second microstructured regions extending from the curved corners toward the side edges.
9. A light directing film as recited in any one of claims 1-3, wherein the optical surface of the body is a reflective surface.
10. The utility model provides a leaded light membrane and integrated configuration from type paper which characterized in that contains:
the light directing film of any one of claims 1 to 9; and
and the release paper is attached to the optical surface of the light guide film, and part of the outer edge of the release paper is positioned on the second microstructure area of the light guide film.
11. A backlight module, comprising:
the light directing film of any one of claims 1 to 9;
and the light source is arranged adjacent to the light incident surface of the light guide film.
12. A display device, comprising:
a backlight module according to claim 11; and
and the display panel is positioned in front of the light guide film of the backlight module.
CN201811621876.2A 2018-12-28 2018-12-28 Light guide film, combined structure comprising light guide film, backlight module and display device Pending CN111381308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811621876.2A CN111381308A (en) 2018-12-28 2018-12-28 Light guide film, combined structure comprising light guide film, backlight module and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811621876.2A CN111381308A (en) 2018-12-28 2018-12-28 Light guide film, combined structure comprising light guide film, backlight module and display device

Publications (1)

Publication Number Publication Date
CN111381308A true CN111381308A (en) 2020-07-07

Family

ID=71217955

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811621876.2A Pending CN111381308A (en) 2018-12-28 2018-12-28 Light guide film, combined structure comprising light guide film, backlight module and display device

Country Status (1)

Country Link
CN (1) CN111381308A (en)

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