Supporting film structure for foldable screen and display device

Abstract

The utility model discloses a supporting film structure for a foldable screen and a display device, and the supporting film structure comprises a supporting film which is disposed on the surface of a display panel; the display panel comprises two non-bending parts and a bendable part connected between the two non-bending parts; the supporting film comprises a protective film and a connecting layer, the connecting layer is arranged on the surface of the display panel, a gap part is formed in the connecting layer and right faces the bendable part, the protective film is arranged on the side, away from the display panel, of the connecting layer, and a separable removal part is formed on the protective film and right faces the gap part. According to the application of the supporting film structure, the supporting film structure suitable for the foldable screen is provided, the gap is formed in the connecting layer and is matched with the protective film with the removing part, so that the whole supporting film structure can be attached and mounted only through one-time positioning, the mounting time is saved to a great extent, the production efficiency is improved, and the production cost is reduced. And the bending capability of the display panel is met.

Description

Technical Field

[0001] The utility model relates to the technical field of display devices, and in particular to a supporting film structure for a foldable screen and a display device. Background Art

[0002] At present, organic light-emitting display devices are flexible and can be manufactured into a foldable structure with a certain degree of portability to meet users' expectations for foldable display products. Such foldable structures are generally made thinner to meet the bendability of the flexible screen for easy folding.

[0003] In the prior art, the method usually adopted is to laminate the corresponding support films on the two relatively separated bending areas on the side of the display panel away from the display area. This also makes it impossible to achieve one-time lamination of the entire lamination work. The use of separate lamination will require higher working accuracy of the lamination equipment, and the efficiency of separate lamination is also poor, and it is difficult to ensure the quality of the product. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of the utility model is to provide a supporting film structure for a foldable screen, characterized in that it comprises: a supporting film, wherein the supporting film is arranged on the surface of the display panel;

[0005] Wherein, the display panel comprises: two non-bending portions and a bendable portion connected between the two non-bending portions;

[0006] The supporting film includes: a protective film and a connecting layer, the connecting layer is arranged on the surface of the display panel, a gap portion is formed on the connecting layer, and the gap portion is arranged opposite to the bendable portion, the protective film is arranged on a side of the connecting layer away from the display panel, a detachable removal portion is formed on the protective film, and the removal portion is arranged opposite to the gap portion.

[0007] In another preferred embodiment, two tear lines are provided on the protective film, and the removal portion is formed between the two tear lines.

[0008] In another preferred embodiment, the connection layer includes: a first part and a second part, the gap is formed between the first part and the second part, and the first part and the second part are both connected to the protective film.

[0009] In another preferred embodiment, the connection layer includes: a supporting layer portion and an adhesive layer portion, the supporting layer portion is connected to the adhesive layer portion, the supporting layer portion is connected to the protective film, and the adhesive layer portion is connected to the display panel.

[0010] In another preferred embodiment, it further comprises: a release film, wherein the release film is removably disposed on a side of the connection layer away from the protective film.

[0011] In another preferred embodiment, the support layer is made of one or more of PET, PI, PEN, PVC, PMMA, PVB, and PC.

[0012] In another preferred embodiment, the adhesive layer is made of one or more of silicone rubber, acrylic resin, unsaturated polyester, polyurethane, epoxy resin, OCA, PSA, and UV.

[0013] In another preferred embodiment, the protective film is made of one or more of polyimide, polyethylene terephthalate, polyethylene naphthalate, polymethyl methacrylate, polyurethane, and polyaramid.

[0014] In another preferred embodiment, the release film is made of one or more of polyimide, polyethylene terephthalate, polyethylene naphthalate, polymethyl methacrylate, polyurethane, and polyaramid.

[0015] The utility model also aims to provide a display device, comprising any one of the above-mentioned supporting film structures for a foldable screen.

[0016] Due to the adoption of the above technical solution, the utility model has the following positive effects compared with the prior art: through the application of the utility model, a supporting membrane structure suitable for a foldable screen is provided, and the gap setting of the connecting layer is combined with the protective film with a removal portion, so that the entire supporting membrane structure can be installed by positioning only once, which greatly saves installation time, improves production efficiency, and meets the bendability of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a first schematic diagram of a supporting film structure for a foldable screen according to the utility model;

[0018] Figure 2 This is a second schematic diagram of a supporting film structure for a foldable screen according to the utility model;

[0019] Figure 3 This is a schematic diagram of the installation of a supporting membrane structure for a foldable screen according to the utility model.

[0020] In the attached figure:

[0021] 1. Display panel; 2. Non-bending part; 3. Bending part; 4. Protective film; 5. Connecting layer; 6. Gap part; 7. Tear line; 8. Support layer part; 9. Adhesive layer part; 10. Release film; 11. Removal part. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0023] like Figure 1 and Figure 2 As shown, a preferred embodiment of a supporting film structure for a foldable screen is shown, comprising: a supporting film, the supporting film is arranged on the surface of a display panel 1; wherein the display panel 1 comprises: two non-bending portions 2 and a bendable portion 3 connected between the two non-bending portions 2; the supporting film comprises: a protective film 4 and a connecting layer 5, the connecting layer 5 is arranged on the surface of the display panel 1, a gap portion 6 is formed on the connecting layer 5, the gap portion 6 is arranged opposite to the bendable portion 3, the protective film 4 is arranged on the side of the connecting layer 5 away from the display panel 1, and a detachable removal portion 11 is formed on the protective film 4, the removal portion 11 is arranged opposite to the gap portion 6. Further, the connecting layer 5 with the gap portion 6 is connected by the protective film 4, and the protective film 4 and the connecting layer 5 are moved and laminated as a whole, and after the supporting film is matched with the surface of the display panel 1, the removal portion 11 is separated, so that the laminating operation can be completed at one time.

[0024] Further, as a preferred embodiment, two easy-tear lines 7 are provided on the protective film 4 , and a removal portion 11 is formed between the two easy-tear lines 7 .

[0025] Further, as a preferred embodiment, the two tear lines 7 are arranged in parallel, and the tear lines 7 are arranged to penetrate along the length direction or the width direction of the surface of the protective film 4 .

[0026] Further, as a preferred embodiment, the connection layer 5 includes: a first part and a second part, a gap 6 is formed between the first part and the second part, and both the first part and the second part are connected to the protective film 4 .

[0027] Further, as a preferred embodiment, the first part and the second part are respectively arranged opposite to the two non-bending parts 2 .

[0028] Further, as a preferred embodiment, the first portion and the second portion extend along the surface of the protective film 4 on a side close to the display panel 1 and are arranged in sequence.

[0029] Further, as a preferred embodiment, the first part and the second part are separated from each other by a certain distance to form the above-mentioned gap 6.

[0030] Further, as a preferred embodiment, the connecting layer 5 includes: a supporting layer portion 8 and an adhesive layer portion 9 , the supporting layer portion 8 is connected to the adhesive layer portion 9 , the supporting layer portion 8 is connected to the protective film 4 , and the adhesive layer portion 9 is connected to the display panel 1 .

[0031] Further, as a preferred embodiment, the support layer portion 8 and the adhesive layer portion 9 are preferably arranged in sequence along a direction perpendicular to the display panel 1 .

[0032] Furthermore, as a preferred embodiment, it further comprises: a release film 10 , which is removably disposed on a side of the connection layer 5 away from the protective film 4 .

[0033] Further, as a preferred embodiment, the support layer 8 is made of one or more of PET, PI, PEN, PVC, PMMA, PVB, and PC.

[0034] Further, as a preferred embodiment, the thickness of the support layer portion 8 is preferably greater than 20 μm.

[0035] Further, as a preferred embodiment, the adhesive layer 9 is made of one or more of silicone rubber, acrylic resin, unsaturated polyester, polyurethane, epoxy resin, OCA, PSA, and UV.

[0036] Further, as a preferred embodiment, the thickness of the adhesive layer portion 9 is preferably greater than 5 μm.

[0037] Furthermore, as a preferred embodiment, the protective film 4 is made of one or more of polyimide, polyethylene terephthalate, polyethylene naphthalate, polymethyl methacrylate, polyurethane, and polyaramid.

[0038] Furthermore, as a preferred embodiment, the release film 10 is made of one or more of polyimide, polyethylene terephthalate, polyethylene naphthalate, polymethyl methacrylate, polyurethane, and polyaramid.

[0039] Further, as a preferred embodiment, the thickness of the protective film 4 and the release film 10 are preferably greater than 20 μm.

[0040] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention.

[0041] The utility model also has the following implementation methods based on the above:

[0042] A display device comprises any one of the above-mentioned supporting film structures for a foldable screen.

[0043] In a further embodiment of the utility model, when manufacturing the supporting film structure for the foldable screen:

[0044] Step S1.1, forming a removal portion 11 on the protective film 4 by laser operation;

[0045] Step S1.2, arranging a support layer portion 8 on the protective film 4 and curing it;

[0046] Step S1.3, disposing the adhesive layer part 9 on the support layer part 8 and curing it;

[0047] Step S1.4, attaching a release film 10 for protection.

[0048] In a further embodiment of the utility model, the above-mentioned solidification can be carried out by cooperating with the solidification operation of the metal mask, and in order to maintain the stability of the structure, the height can be pre-set when designing the metal mask so that the colloid filling amount is limited and the colloid after filling is not higher than the height of the metal mask.

[0049] like Figure 3 As shown, in a further embodiment of the present utility model, when installing the supporting film structure for the foldable screen:

[0050] Step S2.1, tearing off the release film 10;

[0051] Step S2.2, attaching the support film structure to the display panel 1 through a CCD precise positioning system;

[0052] Step S2.3, tearing off the removal portion 11 on the protective film 4.

[0053] In a further embodiment of the present invention, the release film 10 and the protective film 4 can be torn off manually or by other film-tearing devices.

[0054] In a further embodiment of the present invention, the support layer portion 8 and the adhesive layer portion 9 may be directly plated on the display panel 1 in a coating manner to reduce the thickness of the connection layer 5 .

[0055] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A supporting film structure for a foldable screen, characterized in that: include: A supporting film, wherein the supporting film is disposed on a surface of the display panel; Among them, the display panel includes: two non-bending parts and a bendable part connected between the two non-bending parts; the supporting film includes: a protective film and a connecting layer, the connecting layer is arranged on the surface of the display panel, a gap portion is formed on the connecting layer, and the gap portion is arranged opposite to the bendable part, the protective film is arranged on the side of the connecting layer away from the display panel, and a detachable removal portion is formed on the protective film, and the removal portion is arranged opposite to the gap portion.

2. The supporting film structure for a foldable screen according to claim 1, characterized in that: The protective film is provided with two easy-tear lines, and the removal portion is formed between the two easy-tear lines.

3. The supporting film structure for a foldable screen according to claim 1, characterized in that: The connection layer includes: a first part and a second part, the gap is formed between the first part and the second part, and the first part and the second part are both connected to the protective film.

4. The supporting film structure for a foldable screen according to claim 1, characterized in that: The connection layer includes a support layer portion and an adhesive layer portion, the support layer portion is connected to the adhesive layer portion, the support layer portion is connected to the protective film, and the adhesive layer portion is connected to the display panel.

5. The supporting film structure for a foldable screen according to claim 1, characterized in that: Also includes: A release film is removably disposed on a side of the connection layer away from the protective film.

6. A display device, characterized in that: A supporting film structure for a foldable screen comprising any one of claims 1 to 5.

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