Process for producing an electro-optic display film and articles

Abstract

The present application relates to the production process and product of photoelectric display film, the process comprises the following steps: cutting: cutting protective film and adhesive film according to the preset size; Lamination: the first outer layer protective film, the first PVB or EVA adhesive film, the light emitting layer, the heat insulation adhesive film, the second PVB or EVA adhesive film and the second outer layer protective film are sequentially laid from bottom to top to constitute the laminated film; Hot melt laminating: the laid laminated film is placed in a vacuum negative pressure environment, heating, pressure is applied and pressure is maintained, the first PVB or EVA adhesive film, the heat insulation adhesive film and the second PVB or EVA adhesive film are melted, the layers of the laminated film are bonded together and the air between the layers of the film is completely discharged; UV resistance, yellowing resistance, heat insulation and transparency technology are combined, the finished product reaches the quality requirements of outdoor waterproof, heat insulation and flexible transparent display through the hot melting and pressing production process steps, an outdoor transparent display flexible transparent heat insulation display film is provided, and this gap in the industry is filled.

Description

Technical Field

[0001] This invention relates to the field of flexible optoelectronic film display technology, and more specifically, to a manufacturing process and product for an optoelectronic display film. Background Technology

[0002] Flexible optoelectronic display films are mainly used indoors or attached to the inner layer of glass to achieve an outdoor viewing effect. The manufacturing process involves relatively complex steps such as PU potting, grooving and embedding, and flat pressing and gluing. This manufacturing process makes it difficult to accurately control the film thickness and internal sealing. In addition, after prolonged exposure to light, the adhesive is prone to yellowing and decreased transparency, which seriously affects the promotion and application of the product. There is an urgent need for a production process for optoelectronic display films that can solve the above problems. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a manufacturing process for an optoelectronic display film and an optoelectronic display film product, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A manufacturing process for an optoelectronic display film includes the following steps:

[0006] Cutting: Cut the first outer protective film, the first PVB or EVA film, the heat insulation film, the second PVB or EVA film, and the second outer protective film according to the preset size;

[0007] Lamination: The first outer protective film, the first PVB or EVA film, the light-emitting layer, the heat-insulating film, the second PVB or EVA film, and the second outer protective film are laid sequentially from bottom to top to form a laminated film;

[0008] Hot melt lamination: The laid-up laminated film is placed in a vacuum negative pressure environment, heated, pressure is applied and pressure is maintained, so that the first PVB or EVA film, the heat insulation film and the second PVB or EVA film melt, bonding the layers of the laminated film together and completely expelling the air between the layers.

[0009] Trimming: Trim the edges of the hot melt laminated product to remove excess adhesive.

[0010] The manufacturing process of the optoelectronic display film of the present invention further includes the following steps:

[0011] Finished product inspection: Inspect the trimmed products to determine the quality grade of the finished product.

[0012] The production process of the optoelectronic display film of the present invention, wherein the hot melt lamination process is completed in an autoclave.

[0013] The production process of the photoelectric display film, wherein the vacuum negative pressure of the hot melt lamination process is negative one atmosphere, the heating temperature is 150-160℃, and the applied pressure is 2-4kg / m 2 The pressure maintaining time is 35-45 minutes.

[0014] The production process of the photoelectric display film, wherein the light emitting layer is an LED light emitting layer.

[0015] The production process of the photoelectric display film, wherein the LED light emitting layer is made by mounting LED components on a hollow strip-shaped FPC or FR4 material, or by mounting LED components on a printed circuit transparent PET or PI material, or by mounting LED and IC chips directly on a printed circuit transparent PI film.

[0016] A photoelectric display film product, wherein the photoelectric display film product is made by the production process of the photoelectric display film.

[0017] The application has the advantages that the anti-UV, yellowing-resistant, heat-insulating and transparent technologies are combined by the process, the finished product meets the quality requirements of outdoor waterproof, heat insulation and flexible transparent display through the hot melt and pressing production process steps, a flexible transparent heat-insulating display film is provided for outdoor transparent display, and the blank in the industry is filled. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the present application will be further described below with reference to the drawings and embodiments. The drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor:

[0019] Figure 1 is a production process flow chart of the photoelectric display film of the preferred embodiment of the present application;

[0020] Figure 2 is a production process layering film structure schematic diagram of the photoelectric display film of the preferred embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the following will make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0022] The production process of the photoelectric display film of the preferred embodiment of the present application is shown in Figure 1 , and reference is made to Figure 2 , which comprises the following steps:

[0023] S01: Cutting: cutting the first outer protective film, the first PVB or EVA adhesive film, the heat insulation film, the second PVB or EVA adhesive film and the second outer protective film according to the preset size;

[0024] S02: Laminating: sequentially laying the first outer protective film, the first PVB or EVA adhesive film, the light-emitting layer, the heat insulation adhesive film, the second PVB or EVA adhesive film and the second outer protective film from bottom to top to form a laminated film;

[0025] S03: Hot melt lamination: placing the laid laminated film in a vacuum negative pressure environment, heating, applying pressure and maintaining the pressure to process, melting the first PVB or EVA adhesive film, the heat insulation adhesive film and the second PVB or EVA adhesive film, and bonding the layers of the laminated film together and completely discharging the air between the layers of the film;

[0026] S04: Edging: trimming the edges of the product after hot melt lamination to remove the overflowed part;

[0027] S05: Finished product inspection: inspecting the product after edging to determine the quality grade of the finished product.

[0028] By applying the process of the present application, the anti-UV, yellowing-resistant, heat-insulating and transparent technologies are combined, and the finished product meets the quality requirements of outdoor waterproofing, heat insulation and flexible transparent display through the hot melt and pressing production process steps, which provides a flexible transparent heat-insulating display film for outdoor transparent display and fills the gap in the industry.

[0029] As shown in Figure 2 , the laminated film sequentially comprises the first outer protective film 100, the first PVB or EVA adhesive film 101, the light-emitting layer 102, the heat insulation adhesive film 103, the second PVB or EVA adhesive film 104 and the second outer protective film 105 from bottom to top.

[0030] Preferably, the hot melt lamination process is completed in an autoclave, the vacuum negative pressure used in the hot melt lamination process is negative one atmosphere, the heating temperature is 150-160℃, and the applied pressure is 2-4 kg / cm.2 The pressure maintaining time is 35-45 minutes;

[0031] It can be understood that other vacuum hot-pressing equipment can be used in implementation, and the hot-pressing parameters can be customized according to actual needs, and simple replacement based on the above mode also belongs to the protection scope of the present application.

[0032] Preferably, the light-emitting layer is an LED light-emitting layer, which can be made of a hollow strip-shaped FPC or FR4 material with LED components mounted thereon, or a printed transparent PET or PI material with LED components mounted thereon, or a transparent PI film with LED and IC chips fixed thereon.

[0033] It can be understood that the light-emitting layer can also be replaced by other existing light-emitting components, and simple form changes based on this logic also belong to the protection scope of the present application.

[0034] An optoelectronic display film product is made by the production process of the optoelectronic display film as described above, and the product has better outdoor waterproof, heat insulation, flexible transparent display characteristics.

[0035] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the present application.

Claims

1. A process for the production of an electro-optic display film, characterized by, The process comprises the following steps: cutting: cutting the first outer protective film, the first PVB or EVA adhesive film, the heat insulation film, the second PVB or EVA adhesive film and the second outer protective film according to the preset size; stacking: laying the first outer protective film, the first PVB or EVA adhesive film, the light-emitting layer, the heat insulation film, the second PVB or EVA adhesive film and the second outer protective film in order from bottom to top to form a stacked film; hot melt lamination: placing the laid stacked film in a vacuum negative pressure environment, heating, applying pressure and maintaining the pressure to process, melting the first PVB or EVA adhesive film, the heat insulation film and the second PVB or EVA adhesive film, and bonding the layers of the stacked film together and completely discharging the air between the layers of the film; The process further comprises the steps of: trimming: trimming the edges of the product after hot melt lamination to remove the excess adhesive part; The vacuum negative pressure used in the hot melt lamination process is negative one atmosphere, the heating temperature is 150-160℃, the applied pressure is 2-4kg / m 2 , and the pressure maintaining time is 35-45 minutes.

2. The production process of the photoelectric display film according to claim 1, wherein The process further comprises the steps of: finished product inspection: inspecting the product after trimming to determine the quality grade of the finished product.

3. The production process of the photoelectric display film according to claim 1, wherein The hot melt lamination process is completed in an autoclave.

4. The process for producing an electro-optic display film according to any one of claims 1 to 3, characterized by, The light-emitting layer is an LED light-emitting layer.

5. The process for producing a photoelectric display film according to claim 4, wherein The LED light-emitting layer is made by mounting LED components on a hollow bar-shaped FPC or FR4 material, or by mounting LED components on a printed transparent PET or PI material, or by directly fixing LED and IC chips on a printed transparent PI film.

6. An electro-optic display film article, characterized by The optoelectronic display film product is made by the production process of the optoelectronic display film according to any one of claims 1-5.

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