CN216927314U - Optical sheet for backlight unit - Google Patents
Optical sheet for backlight unit Download PDFInfo
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- CN216927314U CN216927314U CN202122519785.1U CN202122519785U CN216927314U CN 216927314 U CN216927314 U CN 216927314U CN 202122519785 U CN202122519785 U CN 202122519785U CN 216927314 U CN216927314 U CN 216927314U
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- primer layer
- base film
- polyethylene naphthalate
- backlight unit
- optical sheet
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Abstract
The utility model relates to the field of optical sheets, and discloses an optical sheet for a backlight unit, which comprises a polyethylene naphthalate base film, a primer layer and a functional coating, wherein the primer layer is arranged on the upper surface of the polyethylene naphthalate base film, the primer layer is fixedly connected with the polyethylene naphthalate base film, the functional coating is arranged on the upper surface of the primer layer, and is fixedly connected with the primer layer. Breakage due to external force, surface hardness, tension, and adhesion to the base film is prevented.
Description
Technical Field
The present invention relates to the field of optical sheets, in particular optical sheets for backlight units.
Background
A backlight is widely used as a Liquid Crystal Display (LCD) of a flat panel display, and since it is a light receiving device for displaying an image by adjusting the number, it requires a backlight unit for maintaining uniform brightness over the entire screen. Such BLU is a direct method (Top-Down system) of directly dimming the entire surface of a substrate by placing a light source at the bottom of a liquid crystal panel, and edge lighting of dimming light by placing a light source at the edge of one or both sides of a liquid crystal panel by reflection and diffuse reflection of light by a light guide plate and a reflective sheet. In recent years, in the field of display, edge-type BLU is generally used because electronic devices are required to be light and thin, to have low power consumption, and to have high color reproducibility. Conventionally known edge type BLUs are polyethylene terephthalate (PET), polyethylene or phthalate (polyethylene naphthalate; PEN), polypropylene (PP), polycarbonate various materials such as (polycarbonate; PC) are used as the base film. PEN materials are increasing in marketability as the excellent optical properties of Dual Brightness Enhancement Films (DBEFs) made of the material are widely known. However, PEN-based films have poor adhesion to other materials due to the characteristics of the materials themselves, and it is difficult to directly apply a coating layer on PEN-based films. In addition, in the field of thin films applied to BLU, peeling of the sheet interface may cause image quality of the LCD screen to be degraded. Therefore, it is desired to improve the adhesion of optical sheets including PEN-based films. For this reason, we have designed an optical sheet for a backlight unit.
Disclosure of Invention
In view of the deficiencies of the prior art, the present invention provides an optical sheet for a backlight unit that solves the problems set forth in the background art described above.
In order to achieve the purpose, the utility model adopts the technical scheme that: an optical sheet for a backlight unit includes a polyethylene naphthalate base film, a primer layer and a functional coating, the upper surface of the polyethylene naphthalate base film is provided with the primer layer, the primer layer is fixedly connected with the polyethylene naphthalate base film, the upper surface of the primer layer is provided with the functional coating, the functional coating is fixedly connected with the primer layer, and the primer layer is formed on one surface of the polyethylene naphthalate base film, so that the adhesive force is greatly improved, and the damage caused by external force, surface hardness, tension and adhesion with the base film is prevented. The occurrence of the situation that the image quality of the LCD screen is reduced due to the peeling of the sheet interface is avoided.
Further, the primer layer is formed by curing through heat treatment.
The utility model has the beneficial effects that: the primer layer composition is prepared by forming a primer layer on one surface of a polyethylene naphthalate base film by dispersing a urethane acrylate-based oligomer, a urethane acrylate-based monomer and a photoinitiator in an organic solvent, and then coating the primer layer composition on the polyethylene naphthalate base film, followed by heat treatment and curing, thereby greatly improving adhesion and preventing damage due to external force, surface hardness, tension and adhesion to the base film.
Drawings
FIG. 1 is a schematic structural view of the present invention; fig. 2 is a cross-sectional view of the present invention.
In the figure: 1. polyethylene naphthalate base film; 2. a primer layer; 3. and (4) a functional coating.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to FIGS. 1-2: an optical sheet for a backlight unit includes a polyethylene naphthalate base film 1, a primer layer 2 and a functional coating layer 3, the primer layer 2 is provided on the upper surface of the polyethylene naphthalate base film 1, the primer layer 2 is fixedly connected with the polyethylene naphthalate base film 1, the primer layer 2 is formed by heat treatment curing, and the functional coating layer 3 is provided on the upper surface of the primer layer 2, the functional coating layer 3 is fixedly connected to the primer layer 2, the primer layer 2 is formed on one surface of the polyethylene naphthalate base film 1, thereby greatly improving adhesion, and preventing damage due to external force, surface hardness, tension and adhesion with the base film. The occurrence of the situation that the image quality of the LCD screen is reduced due to the peeling of the sheet interface is avoided.
In summary, the present invention, when in use, forms a primer layer 2 on one surface of a polyethylene naphthalate base film 1, and the primer layer 2 is formed by dispersing a urethane acrylate-based oligomer, a urethane acrylate-based monomer, and a photoinitiator in an organic solvent to prepare a primer layer 2 composition, and then coats the primer layer 2 composition on the polyethylene naphthalate base film 1, followed by heat treatment for curing, thereby greatly improving adhesion and preventing damage due to external force, surface hardness, tension, and adhesion to the base film.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (2)
1. An optical sheet for a backlight unit, comprising a polyethylene naphthalate-based film (1), a primer layer (2), and a functional coating layer (3), characterized in that: the top surface of polyethylene naphthalate base film (1) is equipped with priming paint layer (2), priming paint layer (2) and polyethylene naphthalate base film (1) fixed connection, and the top surface of priming paint layer (2) is equipped with functional coating (3), functional coating (3) fixed connection is in priming paint layer (2).
2. The optical sheet for a backlight unit according to claim 1, wherein: the primer layer (2) is formed by curing through heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122519785.1U CN216927314U (en) | 2021-10-20 | 2021-10-20 | Optical sheet for backlight unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122519785.1U CN216927314U (en) | 2021-10-20 | 2021-10-20 | Optical sheet for backlight unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216927314U true CN216927314U (en) | 2022-07-08 |
Family
ID=82248695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122519785.1U Active CN216927314U (en) | 2021-10-20 | 2021-10-20 | Optical sheet for backlight unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216927314U (en) |
-
2021
- 2021-10-20 CN CN202122519785.1U patent/CN216927314U/en active Active
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