CN213659875U

CN213659875U - Flexible indoor and outdoor display device

Info

Publication number: CN213659875U
Application number: CN202022860205.0U
Authority: CN
Inventors: 屠国力; 田楠; 张国亮; 江创宏; 丁璇; 姜鹏飞; 李学银; 王晋锋; 林养唐
Original assignee: Shenzhen Fudete Technology Co ltd
Current assignee: Shenzhen Fudete Technology Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-07-09
Anticipated expiration: 2030-12-02

Abstract

The utility model discloses a flexible indoor and outdoor display device, which comprises a first protective layer, a first bonding layer, a flexible luminous layer, a second bonding layer and a second protective layer which are sequentially stacked; the flexible luminous layer comprises a plurality of LED lamp belts and a plurality of flexible protection strips, the LED lamp belts and the flexible protection strips are of strip structures with the same thickness and are arranged alternately, and the LED lamp belts are LED flexible display light sources made of transparent polyimide films serving as substrates. The utility model discloses a arrange strip structure's LED lamp area and flexible protection strip with mutual alternative mode, make flexible indoor outer display device can adapt to different crooked scene demands, be difficult for ageing, can freely change LED lamp area according to the in-service use requirement, realized the indoor outer display effect of flexible of no size restriction.

Description

Flexible indoor and outdoor display device

Technical Field

The utility model relates to a photoelectric display field, especially a flexible indoor outer display device.

Background

The prior indoor and outdoor display devices basically use common LCDs or LEDs as background light sources, are not foldable, bendable and low in resolution, are limited by using places in use, and can only be used for appearance appreciation at a certain distance.

It has been attempted to use polycarbonate (PC for short) as a display substrate and arrange LED light sources on the PC substrate. However, the PC substrate cannot be processed into a super-thin sheet based on its own physical properties, is too hard, and is rapidly aged under sunlight irradiation during use, cannot be folded and bent according to a use place, and has a service life shorter than that of an LED light source. In order to achieve flexibility, in the prior art, an attempt has been made to arrange LED light sources on a PET substrate, and although the LED light sources can be folded and bent, since PET is less resistant to aging, it is easy to age during long-term display use, and PET is also difficult to meet the demand. In addition, when a polyimide (PI for short) film is used as a substrate for arranging the LED light sources, due to the precision problem of PI film processing, a small-sized flexible application scene is mainly used, and the requirement of large display width indoors and outdoors cannot be met.

Therefore, there is a need for a new transparent flexible display device for solving the above-mentioned problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible indoor outer display device for solve among the prior art LED display device be difficult to crooked, easily ageing, size restriction scheduling problem.

In order to solve the technical problem, the utility model provides a flexible indoor and outdoor display device, which comprises a first protective layer, a first bonding layer, a flexible luminous layer, a second bonding layer and a second protective layer which are sequentially stacked; the flexible luminous layer comprises a plurality of LED lamp belts and a plurality of flexible protection strips, the LED lamp belts and the flexible protection strips are of strip structures with the same thickness and are arranged alternately, and the LED lamp belts are LED flexible display light sources made of transparent polyimide films serving as substrates.

Preferably, the flexible protection strip is a transparent film structure made of thermoplastic polyurethane elastomer rubber or polyimide, and the flexible protection strip is tightly arranged between two adjacent LED lamp strips.

Preferably, the circuit of the LED lamp strip is a transparent circuit formed by a composite transparent conductive film, and a light source device of the LED lamp strip is a Mini LED or a Micro LED; the composite transparent conductive film includes but is not limited to ITO/Ag/ITO transparent conductive film.

Preferably, the thicknesses of the LED lamp strip and the flexible protection strip are 50-1000 microns.

Preferably, the first protective layer and the second protective layer are both transparent film structures made of thermoplastic polyurethane elastomer rubber or polyetherimide, and the thickness of the transparent film structures is 25-100 micrometers.

Preferably, the first bonding layer is OCA optical cement or UV optical cement, the second bonding layer is OCA optical cement, and the thickness of the first bonding layer and the thickness of the second bonding layer are both 25-100 micrometers.

The utility model has the advantages that: be different from prior art's condition, the utility model provides a flexible indoor outer display device arranges with the mode of alternating each other through the LED lamp area with the bar structure and flexible protection strip, makes flexible indoor outer display device can adapt to different crooked scene demands, and is difficult ageing, can freely change LED lamp area according to the in-service use requirement, has realized the flexible indoor outer display effect of no size restriction.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of a medium flexible indoor and outdoor display device according to the present invention;

in the figure: 1: a first protective layer; 2: a first adhesive layer; 3: a flexible light emitting layer; 31: an LED light strip; 32: a flexible protective strip; 4: a second adhesive layer; 5: a second protective layer; 6: OCA optical cement; 7: the substrate is attached.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a flexible indoor and outdoor display device of the present invention. The utility model discloses a middle flexible indoor and outdoor display device comprises a first protective layer 1, a first bonding layer 2, a flexible luminous layer 3, a second bonding layer 4 and a second protective layer 5 which are sequentially stacked; the flexible light emitting layer 3 comprises a plurality of LED lamp strips 31 and a plurality of flexible protection strips 32, the LED lamp strips 31 and the flexible protection strips 32 are of strip structures with the same thickness and are alternately arranged, the LED lamp strips 31 are LED flexible display light sources made of transparent polyimide films as substrates, and the flexible indoor and outdoor display devices can adapt to different curved scene requirements through the arrangement mode of the LED lamp strips 31 and the flexible protection strips 32 which are alternately arranged. The respective constituent parts of the flexible indoor and outdoor display device are described in detail below.

In this embodiment, the flexible protective strip 32 is preferably a transparent film made of thermoplastic polyurethane elastomer rubber or polyimide, which has the advantage of higher elongation at break and tensile modulus; the flexible protection strips 32 are tightly arranged between two adjacent LED lamp strips 31, so that an arrangement mode that the LED lamp strips 31 and the flexible protection strips 32 are mutually alternated is formed, and the flexible protection strips 32 play roles in linking and protecting the LED lamp strips 31 in the process that the flexible indoor and outdoor display device is bent.

In the embodiment, the circuit of the LED lamp strip is a transparent circuit formed by a composite transparent conductive film, preferably an ITO/Ag/ITO transparent conductive film, and the light source device of the LED lamp strip is a Mini LED or a Micro LED, which is light, thin and high in resolution compared with a conventional LED lamp bead; the thickness of the LED lamp strip and the thickness of the flexible protection strip are preferably 50-1000 microns. In other embodiments, the thickness and the width of the LED strip and the flexible protection strip may be adaptively selected according to actual requirements, which is not limited herein.

In the present embodiment, the first protective layer 1 and the second protective layer 5 are preferably each a transparent thin film structure made of thermoplastic polyurethane elastomer rubber or polyetherimide, and preferably have a thickness of 25 to 100 μm, and function to protect the flexible light emitting layer 3 and to be bonded to both sides of the flexible light emitting layer 3 by an adhesive material. The first bonding layer 2 is OCA optical cement or UV optical cement, the second bonding layer 4 is OCA optical cement, solar radiation can be effectively resisted when the UV optical cement is adopted, and an anti-aging effect is achieved, so that the outdoor display requirement is met; the thickness of the first adhesive layer 2 and the second adhesive layer 4 is 25-100 μm. In other embodiments, the thicknesses of the first protective layer 1, the first adhesive layer 2, the second adhesive layer 4, and the second protective layer 5 may be adaptively selected according to actual needs, and are not limited herein.

Further, based on the structural description of the flexible indoor and outdoor display device, an application mode of the flexible indoor and outdoor display device is explained. In this embodiment, the first protection layer 1 of the flexible indoor and outdoor display device can be bonded to the surface of the attachment substrate 7 through the OCA optical cement 6 on the side away from the first bonding layer 2, wherein the attachment substrate 7 can be a glass substrate, a background substrate and other substrate structures needing to be applied, and the flexible indoor and outdoor display device can be flexibly bent adaptively according to the surface morphology of the attachment substrate 7, so as to meet the requirements of different bending scenes. Compared with the mode of setting up Mini LED on the monoblock transparent polyimide film now, the precision problem of transparent polyimide film processing is owing to current scheme, use 1-1.6 meters width as optimum size basically, then can't satisfy bigger size's demonstration demand, and the mode that this scheme arranged with LED lamp area 31 and flexible protection strip 32 in turn each other, make display device can not receive the restriction of size, show the application scene who has expanded display device, and also have fine guard action to LED lamp area, long-term use is difficult for ageing yet.

Be different from prior art's condition, the utility model provides a flexible indoor outer display device arranges with the mode of alternating each other through the LED lamp area with the bar structure and flexible protection strip, makes flexible indoor outer display device can adapt to different crooked scene demands, and is difficult ageing, can freely change LED lamp area according to the in-service use requirement, has realized the flexible indoor outer display effect of no size restriction.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A flexible indoor and outdoor display device is characterized by comprising a first protective layer, a first bonding layer, a flexible luminous layer, a second bonding layer and a second protective layer which are sequentially stacked;

the flexible luminous layer comprises a plurality of LED lamp belts and a plurality of flexible protection strips, the LED lamp belts and the flexible protection strips are of strip structures with the same thickness and are arranged alternately, and the LED lamp belts are LED flexible display light sources made of transparent polyimide films serving as substrates.

2. The flexible indoor and outdoor display device according to claim 1, wherein said flexible protective strip is a transparent film structure made of thermoplastic polyurethane elastomer rubber or polyimide, and said flexible protective strip is closely disposed between two adjacent LED strips.

3. The flexible indoor and outdoor display device according to claim 1, wherein the lines of the LED strip are transparent lines formed of a composite transparent conductive film, and the light source device of the LED strip is a Mini LED or a Micro LED;

the composite transparent conductive film comprises an ITO/Ag/ITO transparent conductive film.

4. The flexible indoor and outdoor display device according to claim 1, wherein the thickness of the LED strip and the flexible protective strip is 50 to 1000 μm.

5. The flexible indoor and outdoor display device according to claim 1, wherein said first protective layer and said second protective layer are each a transparent thin film structure made of thermoplastic polyurethane elastomer rubber or polyetherimide and have a thickness of 25 to 100 μm.

6. The flexible indoor and outdoor display device of claim 1, wherein the first adhesive layer is OCA optical cement or UV optical cement, the second adhesive layer is OCA optical cement, and the thickness of the first adhesive layer and the thickness of the second adhesive layer are both 25-100 μm.