A kind of UV-proof OLED protective film and preparation method thereof

Abstract

The present invention discloses an anti-ultraviolet OLED protective film and a preparation method thereof, comprising a protective film body, wherein the protective film body has an anti-ultraviolet film layer built therein, and the four surfaces of the protective film are each provided with one or more inwardly recessed retreat cavities, and an extended edge is formed on the protective film corresponding to the retreat cavities, and a sealing strip is arranged at the bottom of the extended edge, the sealing strip is located in the retreat cavities and seals the outer opening surface of the retreat cavities, the bottom surface of the sealing strip contacts and seals with the external surface, and the top of the sealing strip is pressed by the extended edge. The optical protective film of the present invention has an anti-ultraviolet function, and a plurality of sealing strips are arranged at the positions of the four edges of the protective film, so that once the edge is damaged or the air tightness of the edge deteriorates, emergency treatment can be carried out to keep the edge sealed, prevent dust from entering, and reduce the generation of edge bubbles.

Description

Technical Field

[0001] The invention relates to the field of OLED protective films, and in particular to an ultraviolet-proof OLED protective film and a preparation method thereof. Background Art

[0002] With the development of electronic technology, some electronic products such as smart phones, tablet computers and other popular consumer electronic products have been widely introduced into ordinary families. At the same time, along with these electronic products, optical protective films have gradually become known to people. The application of optical protective films not only makes electronic products more beautiful, but also protects the screen, dust and scratches, etc. Therefore, optical protective films have become one of the most important auxiliary products for electronic products.

[0003] In order to increase the functions of such protective films, many will add various functional structural layers, such as adding anti-ultraviolet films to achieve the purpose of anti-ultraviolet rays, etc. However, no matter which kind of protective film is used, there will be the following problems when it is used:

[0004] Since the protective film is fixed to the screen of the product by bonding, there cannot be any bubbles in the middle, otherwise it will affect the use. Therefore, all the air needs to be squeezed out when attaching this type of protective film. After the device has been used for a long time, the four sides of the protective film will protrude from the screen surface, which will cause a lot of dust to accumulate on the raised edges. As time goes by, the dust will slowly enter along the edge. Once dust enters, bubbles will be generated. As the dust accumulates and air enters, a larger cavity area will be generated at the edge. At this time, the entire protective film will be scrapped and it will be difficult to repair it later. Summary of the invention

[0005] The technical problem to be solved by the present invention is an anti-ultraviolet OLED protective film and a preparation method thereof. An emergency repair structure is set on the four sides of the protective film, so that when there is a problem with the edge of the protective film, emergency repair can be achieved to prevent the protective film from being completely scrapped.

[0006] The present invention is achieved through the following technical solutions: an anti-ultraviolet OLED protective film, comprising a protective film body, wherein the protective film body has a built-in anti-ultraviolet film layer, and the four sides of the protective film are each provided with one or more inwardly recessed retreat cavities, and an extended edge is formed on the protective film corresponding to the retreat cavity, and a sealing strip is arranged at the bottom of the extended edge, the sealing strip is located in the retreat cavity and seals the outer opening surface of the retreat cavity, the bottom surface of the sealing strip is in contact with the external surface for sealing, and the top of the sealing strip is pressed by the extended edge.

[0007] As a preferred technical solution, the bottom surface of the extended edge and the connecting surface of the side surface of the protective film body form an open groove. When the sealing strip is located in the retreat cavity, the sealing strip supports the extended edge upward and opens the open groove.

[0008] As a preferred technical solution, the side of the protective film is provided with multiple protrusions corresponding to the position of the sealing strip, the middle of the protrusion is hollowed out to form a accommodating cavity with an outer opening, and corresponding sealing protrusions are provided on the sealing strip corresponding to the outer opening of the accommodating cavity. The sealing protrusions are buckled into the accommodating cavity and seal the outer opening end of the accommodating cavity.

[0009] As a preferred technical solution, the accommodating cavity is filled with colorless and transparent liquid glue.

[0010] As a preferred technical solution, a recessed buckle groove is provided on the top surface of the sealing strip, and a corresponding sealing buckle strip is arranged on the lower end surface of the extended edge of the buckle groove, and the sealing buckle strip at the bottom of the extended edge is buckled into the buckle groove.

[0011] As a preferred technical solution, buckle ears are protrudingly provided on both sides of the sealing strip, and ear grooves are provided on the sides of the protective film body corresponding to the buckle ears, and the buckle ears are buckled into the ear grooves.

[0012] As a preferred technical solution, the outer side surface of the button ear is slightly convex from the outer surface of the protective film body, and the button ear is fixed to the ear groove by glue.

[0013] As a preferred technical solution, the upper end surface of the extended edge is an inclined surface, and the inclined surface is inclined toward a side away from the protective film body.

[0014] As a preferred technical solution, the upper and lower end surfaces of the sealing strip are provided with adhesive layers, and the sealing strip is adhered via the adhesive layers.

[0015] The method for preparing an ultraviolet-proof OLED protective film of the present invention comprises the following steps:

[0016] Step 1: Prepare an OLED protective film with an anti-ultraviolet film layer;

[0017] Step 2: cutting a plurality of inwardly recessed recessed cavities on four surfaces of the protective film body;

[0018] Step 3: Fill and set a sealing strip in each recessed cavity, and use the adhesive layer on the front and back sides of the sealing strip to bond it to the protective film body;

[0019] Step 4: cut an opening groove at the junction of the retreat cavity and the protective film body, and set a transparent elastic sheet on the upper end surface of the extended edge corresponding to the opening groove, so that the transparent elastic sheet connects the protective film body and the extended edge, and uses the elastic force of the elastic sheet to press the extended edge against the sealing strip;

[0020] Step 5: Cut a plurality of convex portions at positions corresponding to the sealing strip on the side of the protective film, hollow out the interior of the convex portions to form a receiving cavity with an outer opening, and fill the receiving cavity with liquid transparent glue;

[0021] Step 6: Cut a sealing convex portion on one side of the sealing strip corresponding to the accommodating cavity, buckle the sealing convex portion on the sealing strip into the accommodating cavity and seal the outer opening of the accommodating cavity, so that the transparent glue inside is in a fully sealed space to prevent solidification.

[0022] The beneficial effects of the present invention are as follows: 1. The present invention provides retreat cavities at the positions of the four sides of the edge of the protective film, and then forms an extended edge, and uses the extended edge to press the sealing strip at the bottom, so that after the attachment is completed, the bottom area of ​​the extended edge is hollowed out, and the sealing strip is used as the edge position of the protective film. Since a certain pressure value is applied to the top of the sealing strip through the extended edge, the sealing performance of the edge position of the extended edge can be higher at this time, which can effectively improve the sealing performance and reduce the entry of dust;

[0023] Second, when dust enters the edge of the present invention, the sealing strip with poor air tightness can be torn off manually. At this time, the extended edge that was originally lifted up falls down in an inclined state. After the sealing strip is torn off, the liquid transparent glue in the accommodating cavity flows out. At this time, the extended edge is used to achieve emergency sealing to prevent dust from continuing to enter, thereby extending the service life of the protective film.

[0024] 3. After the extended edge of the present invention loses the lifting force of the sealing strip, the opening side of the extended edge is tilted, so that the edge at this position is tilted, thereby reducing the edge thickness of the protective film, reducing its gradient, reducing the amount of dust accumulation in the later stage, and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A;

[0028] Figure 3 A three-dimensional diagram of the extended edge and the sealing strip of the present invention;

[0029] Figure 4 For the present invention Figure 3 A partial enlarged view of point B in the middle;

[0030] Figure 5 It is a schematic structural diagram of the sealing strip of the present invention. DETAILED DESCRIPTION

[0031] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0032] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0033] like Figure 1-Figure 5 As shown, an anti-ultraviolet OLED protective film of the present invention comprises a protective film body 1, the protective film body 1 has a built-in anti-ultraviolet film layer, four surfaces of the protective film are provided with at least one inwardly recessed retreat cavity 71, an extended edge 7 is formed on the protective film corresponding to the retreat cavity 71, a sealing strip 3 is arranged at the bottom of the extended edge 7, the sealing strip 3 is located in the retreat cavity 71 and seals the outer opening surface of the retreat cavity 71, the bottom surface of the sealing strip 3 contacts and seals the external surface, and the top of the sealing strip 3 is pressed by the extended edge 7.

[0034] like Figure 4 As shown, the bottom surface of the extended edge 7 and the connecting surface of the side surface of the protective film body 1 form an open groove 72. When the sealing strip 3 is located in the retreat cavity 71, the sealing strip 3 props up the extended edge and opens the open groove 72.

[0035] like Figure 2 As shown, a plurality of protrusions 13 are protruding from the side of the protective film corresponding to the position of the sealing strip. The middle of the protrusion 13 is hollowed out to form a accommodating cavity 14 with an outer opening. A corresponding sealing protrusion 6 is provided on the sealing strip corresponding to the outer opening of the accommodating cavity 14. The sealing protrusion 6 is buckled into the accommodating cavity 14 and seals the outer opening end of the accommodating cavity 14.

[0036] Among them, the accommodating cavity 14 is filled with colorless and transparent liquid glue in a small amount. When the sealing protrusion is buckled into the accommodating cavity, the inside of the accommodating cavity 14 is in an absolutely sealed state. At this time, the liquid glue will not solidify due to contact with the air. When dust is found to have entered the position of a sealing strip somewhere, that is, dust is accumulated in the space at the bottom of the extended edge, the sealing strip can be manually pulled out from the buckle ear on one side of the sealing strip. At this time, the extended edge is pressed down, and the liquid glue in the accommodating cavity runs out, blending with the extended edge to solidify it as a whole, thereby achieving the purpose of self-sealing.

[0037] like Figure 2and Figure 5 As shown, a recessed buckle groove 5 is provided on the top surface of the sealing strip 3 , and a corresponding sealing buckle strip (not shown) is arranged on the lower end surface of the extended edge of the buckle groove 5 , and the sealing buckle strip at the bottom of the extended edge is buckled into the buckle groove 5 .

[0038] like Figure 2 and Figure 5 As shown, buckle ears 4 are protrudingly provided on both sides of the sealing strip 3, and ear grooves are provided on the side surfaces of the protective film body corresponding to the buckle ears 4. The buckle ears 4 are buckled into the ear grooves, wherein the outer side surfaces of the buckle ears 4 are slightly protruding from the outer surface of the protective film body, and the buckle ears 4 are fixed to the ear grooves by glue.

[0039] like Figure 4 As shown, the upper end face of the extended edge 7 is an inclined surface 11, and the inclined surface 11 is inclined toward the side away from the protective film body. When the extended edge 7 loses the support of the sealing strip, the opening side of the extended edge 7 is inclined. Since it is an inclined surface, the opening side of the extended edge is inclined upward, and the entire thickness will be greatly reduced. In this way, the position gradient of the extended edge will be reduced, thereby reducing the accumulation of dust, making the sealing performance at this position higher than usual, and preventing dust from entering.

[0040] The upper and lower end surfaces of the sealing strip 3 are provided with adhesive layers, and the sealing strip 3 is pasted through the adhesive layers.

[0041] The invention discloses a method for preparing an OLED protective film with an anti-ultraviolet film, comprising the following steps: preparing an OLED protective film with an anti-ultraviolet film layer; cutting a plurality of inwardly recessed retreat cavities on four surfaces of a main body of the protective film; filling and setting a sealing strip in each retreat cavities, and using the adhesive layers on the front and back surfaces of the sealing strip to bond with the main body of the protective film; cutting an opening groove at the junction of the retreat cavities and the main body of the protective film, and setting and attaching a transparent elastic sheet on the upper end surface of the extended edge corresponding to the opening groove, the transparent elastic sheet connects the main body of the protective film with the extended edge, and using the elastic force of the elastic sheet to press the extended edge toward the sealing strip; cutting a plurality of convex parts at positions corresponding to the sealing strip on the side of the protective film, hollowing out the interior of the convex parts to form a receiving cavity with an outer opening, and filling the receiving cavity with liquid transparent glue; cutting a sealing convex part on the sealing strip corresponding to one side of the receiving cavity, buckling the sealing convex part on the sealing strip into the receiving cavity and sealing the outer opening of the receiving cavity, so that the transparent glue inside is in a fully sealed space to prevent solidification.

[0042] The beneficial effects of the present invention are as follows: 1. The present invention provides retreat cavities at the positions of the four sides of the edge of the protective film, and then forms an extended edge, and uses the extended edge to press the sealing strip at the bottom, so that after the attachment is completed, the bottom area of ​​the extended edge is hollowed out, and the sealing strip is used as the edge position of the protective film. Since a certain pressure value is applied to the top of the sealing strip through the extended edge, the sealing performance of the edge position of the extended edge can be higher at this time, which can effectively improve the sealing performance and reduce the entry of dust;

[0043] When dust enters the edge of the present invention, the sealing strip with poor air tightness can be torn off manually. At this time, the extended edge that was originally lifted up falls down in an inclined state. After the sealing strip is torn off, the liquid transparent glue in the accommodating cavity flows out. At this time, the extended edge is used to achieve emergency sealing to prevent dust from continuing to enter, thereby increasing the service life of the protective film.

[0044] After the extended edge of the present invention loses the lifting force of the sealing strip, the opening side of the extended edge is arranged obliquely, so that the edge at this position is inclined, thereby reducing the edge thickness of the protective film, reducing its gradient, reducing the amount of dust accumulation in the later stage, and extending the service life.

[0045] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. An anti-ultraviolet OLED protective film, comprising a protective film body, wherein the protective film body has a built-in anti-ultraviolet film layer, characterized in that: The four surfaces of the protective film are each provided with one or more inwardly recessed recessed cavities, and an extended edge is formed on the protective film corresponding to the recessed cavities. A sealing strip is provided at the bottom of the extended edge. The sealing strip is located in the recessed cavities and seals the outer opening surface of the recessed cavities. The bottom surface of the sealing strip contacts and seals the outer surface, and the top of the sealing strip is pressed by the extended edge. The bottom surface of the extended edge and the connecting surface of the side surface of the protective film body form an open groove. When the sealing strip is located in the retreat cavity, the extended edge is supported upward by the sealing strip to open the open groove. The side surface of the protective film is provided with a plurality of convex parts corresponding to the position of the sealing strip. The middle of the convex parts is hollowed out to form a receiving cavity with an outer opening. The sealing strip corresponding to the outer opening of the receiving cavity is provided with a corresponding sealing convex part. The sealing convex part is buckled into the receiving cavity and seals the outer opening end of the receiving cavity. The top surface of the sealing strip is provided with a concave buckle groove, and the lower end surface of the extended edge of the corresponding buckle groove is provided with a corresponding sealing buckle strip, and the sealing buckle strip at the bottom of the extended edge is buckled into the buckle groove; Both sides of the sealing strip are protrudingly provided with buckle ears, and the side surfaces of the protective film body corresponding to the buckle ears are provided with ear grooves, and the buckle ears are buckled into the ear grooves; the outer side surfaces of the buckle ears are slightly convex than the outer surface of the protective film body, and the buckle ears and the ear grooves are fixed by glue; the upper end surface of the extended edge is an inclined surface, which is inclined toward the side away from the protective film body, and the upper and lower end surfaces of the sealing strip are provided with adhesive layers, and the sealing strip is pasted through the adhesive layers; the accommodating cavity is filled with colorless and transparent liquid glue.

2. A method for preparing the UV-proof OLED protective film according to claim 1, characterized in that: It includes the following steps: Step 1: Prepare an OLED protective film with an anti-ultraviolet film layer; Step 2: cutting a plurality of inwardly recessed recessed cavities on four surfaces of the protective film body; Step 3: Fill and set a sealing strip in each recessed cavity, and use the adhesive layer on the front and back sides of the sealing strip to bond it to the protective film body; Step 4: cut an opening groove at the junction of the retreat cavity and the protective film body, and set a transparent elastic sheet on the upper end surface of the extended edge corresponding to the opening groove, so that the transparent elastic sheet connects the protective film body and the extended edge, and uses the elastic force of the elastic sheet to press the extended edge against the sealing strip; Step 5: Cut a plurality of convex portions at positions corresponding to the sealing strip on the side of the protective film, hollow out the interior of the convex portions to form a receiving cavity with an outer opening, and fill the receiving cavity with liquid transparent glue; Step 6: Cut a sealing convex portion on one side of the sealing strip corresponding to the accommodating cavity, buckle the sealing convex portion on the sealing strip into the accommodating cavity and seal the outer opening of the accommodating cavity, so that the transparent glue inside is in a fully sealed space to prevent solidification.

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