CN213458793U

CN213458793U - Rollable flexible transparent display screen

Info

Publication number: CN213458793U
Application number: CN202022386402.3U
Authority: CN
Inventors: 刘博伦
Original assignee: Shenzhen Chuangyue Nuoxin Technology Co ltd
Current assignee: Shenzhen Chuangyue Nuoxin Technology Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-23
Publication date: 2021-06-15
Anticipated expiration: 2030-10-23

Abstract

The utility model discloses a rollable flexible transparent display screen, belonging to the technical field of flexible display screens, wherein the display screen is composed of a plurality of display screen modules; the display screen module comprises a multilayer structure, wherein the multilayer structure comprises a driving IC, a transparent flexible circuit layer, an LED flip chip and transparent flexible glue; the transparent flexible circuit layer is composed of a plurality of layers of transparent films and a circuit layer. The utility model discloses the flexible transparent display screen of example, the circuit layer adopts transparent flexible circuit layer, and the circuit layer uses the three-layer to overlap on a large scale and walks the line, has promoted the transparency of display screen greatly, and bottom and top layer circuit adopt silver-colored circuit, make the display screen more transparent, pleasing to the eye, and the upper and lower layer circuit board cover membrane on transparent flexible circuit layer replaces with surface transparent adhesive tape, has saved covering surface promptly and has protected circuit and components and parts again, plays waterproof effect.

Description

Rollable flexible transparent display screen

Technical Field

The utility model relates to a flexible display screen technical field especially relates to a can roll up flexible transparent display screen.

Background

The LED display screen has the advantages of energy conservation, environmental protection, long service life and the like, so that the LED display screen is widely applied to aspects of production and life of the modern society, and a flexible LED display screen gradually appears later.

In the LED display field, the LED display screen is required to be convenient to transport, light and thin in screen body, convenient to disassemble and assemble, capable of being in variable shapes, and combined with the latest high-temperature-resistant transparent bendable film technology, the application range of products is enlarged, advertisements can be displayed by being attached to glass, the lighting effect of the glass is not influenced, the appearance is attractive, and the like. Therefore, how to further improve the transparency of the display screen and improve the curling capability of the display screen is an important research direction of the LED display screen.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies in the prior art, the utility model aims to provide a can roll up flexible transparent display screen, the circuit layer adopts transparent flexible circuit layer, and the circuit layer uses the three-layer to overlap on a large scale and walks the line, has promoted the transparency of display screen greatly, and bottom and top layer circuit adopt silver-colored circuit, make the display screen more transparent, pleasing to the eye.

The utility model provides a technical scheme that its technical problem adopted does:

a rollable flexible transparent display is provided, the display being made up of a plurality of display modules; the display screen module comprises a multilayer structure, wherein the multilayer structure comprises a driving IC, a transparent flexible circuit layer, an LED flip chip and transparent flexible glue; the transparent flexible circuit layer is composed of a plurality of layers of transparent films and a circuit layer.

Furthermore, the transparent flexible circuit layer comprises a bottom layer circuit layer, a bottom layer transparent film, a middle layer circuit layer, a top layer transparent film and a top layer circuit layer which are arranged in sequence.

Furthermore, the transparent flexible glue is provided with two blocks which are respectively positioned on the outer side surfaces of the top layer circuit layer and the bottom layer circuit layer.

Furthermore, the bottom layer circuit layer, the middle layer circuit layer and the top layer circuit layer are overlapped and wired, and a grid structure is adopted for wiring.

Furthermore, tin layers are coated on the bottom layer circuit layer and the top layer circuit layer.

Furthermore, the upper surface and the lower surface of the transparent flexible circuit layer are both covered with flexible glue.

Furthermore, the driving IC is arranged on the bottom layer circuit layer, the LED flip chip is directly welded on the top layer circuit layer, and the LED flip chip is connected with the driving IC through a lead and a via hole;

or the driving IC is arranged on the top layer circuit layer, the LED flip chip is directly welded on the bottom layer circuit layer, and the LED flip chip is connected with the driving IC through a lead and a via hole.

Further, the LED flip chip is composed of an R chip, a G chip and a B chip, and multiple groups of LED flip chips are arranged.

Furthermore, each group of LED flip chips is electrically connected with the other group of LED flip chips and the driving IC through wires.

Further, the transparent film is a transparent PI film or a transparent PA film.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model discloses a display screen comprises a plurality of display screen modules, and the circuit layer of display screen module adopts transparent flexible circuit layer, has realized that the display screen is transparent, soft, rollable, has realized that the display screen easy dismounting, changeable molding's function;

2. the utility model discloses the three-layer circuit layer on transparent flexible circuit layer adopts the mode of overlapping the line of walking to walk the line, and like this, the circuit on three-layer circuit layer will be on same plane of projection, has promoted the transparency of circuit layer, and adopts field word check structure, walks the line regularly, has reduced the area of coverage of circuit to the circuit layer, has further promoted the transparency;

3. the utility model has the advantages that the circuit layers of the bottom layer and the top layer are coated with tin layers, and the circuit layers are silvery when viewed from the surface, so that the transparency and the aesthetic property are increased;

4. the utility model discloses through transparent pure glue bonding between the multilayer circuit layer on transparent flexible circuit layer, transparent pure glue bonding is insulating, has increased the transparency of display screen, and the upper and lower both sides on transparent flexible circuit layer all cover and have the transparent flexible glue that can play the guard action to the circuit layer, has saved covering face promptly and has protected circuit and components and parts again, plays waterproof effect, can curl wantonly when waterproof.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a display screen module of the present invention;

FIG. 2 is an enlarged view of the present invention at A;

fig. 3 is a schematic diagram of the structure of the transparent flexible circuit layer of the present invention.

In the figure: 1-drive IC, 2-transparent flexible circuit layer, 3-LED flip chip, 21-bottom layer circuit layer, 22-bottom layer transparent PI film, 23-middle layer circuit layer, 24-top layer transparent PI film, 25-top layer circuit layer, 31-B chip, 32-R chip, 33-G chip, and 4-transparent flexible adhesive

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The first embodiment is as follows:

as shown in fig. 1, 2 and 3, a rollable flexible transparent display screen is composed of a plurality of display screen modules, and the display screen modules can be freely spliced, so that the size and the shape of the display screen can be changed.

The display screen module comprises a multilayer structure, and the multilayer structure sequentially comprises transparent flexible glue 4, a drive IC1, a transparent flexible circuit layer 2, an LED flip chip 3 and transparent flexible glue 4. Drive IC1 sets up on the bottom circuit layer 21 of transparent flexible circuit layer 2, and LED flip chip 3 lug connection is on the top layer circuit layer 25 of transparent flexible circuit layer 2, just LED flip chip 3 is connected through wire and via hole with drive IC1, and LED flip chip 3 lug connection has saved traditional lamp pearl support, gold thread, paster lamp cost on the circuit layer, has improved production efficiency, has also improved the transparency of display screen. Transparent flexible glue 4 has all been covered on the upper and lower two sides of transparent flexible circuit layer 2, and transparent flexible glue 4 plays the guard action to circuit layer and each components and parts, and it has waterproof effect, and can realize the arbitrary curling of display screen.

As shown in fig. 3, the transparent flexible circuit layer 2 includes a bottom layer circuit layer 21, a bottom layer transparent PI film 22, a middle layer circuit layer 23, a top layer transparent PI film 24, and a top layer circuit layer 25, which are sequentially disposed, and the adjacent layers are bonded and insulated by transparent pure glue, so that the transparency of the display screen is increased.

The bottom layer line layer 21, the middle layer line layer 23 and the top layer line layer 25 are in a grid structure and are overlapped, so that three layers of lines are on the same projection surface, only one layer of lines are seen from one surface, and the transparency of the display screen is improved. In addition, in order to further improve the transparency and the aesthetic degree of the display screen, tin layers are coated on the surfaces of the bottom layer circuit layer 21 and the top layer circuit layer 25, the middle layers are copper, and when the display screen is viewed from front to back, the display screen is silver circuits, so that the display screen is more attractive.

LED flip chip 3 is equipped with the multiunit, and all comprises R chip 32, G chip 33, B chip 31, and three kinds of chips are all directly pasted on the circuit layer, have improved the tradition and have packaged into LED lamp pearl earlier and then pasted the complicated technology on the circuit board to promote display screen production efficiency, reduce cost.

Each group of the LED flip chips 3 is electrically connected to another group of the LED flip chips 3 and the driving IC1 through wires, wherein each group R, G, B of the three chips is common to the anode or the cathode.

Example two:

in this embodiment, the transparent film adopts transparent PA membrane, promptly transparent flexible circuit layer 2 is including the bottom circuit layer, the transparent PA membrane of bottom, intermediate level circuit layer, the transparent PA membrane of top layer, the top layer circuit layer that set gradually. The driver IC1 is disposed on the top circuit layer 25 of the transparent flexible circuit layer 2, and the LED flip chip 3 is directly soldered on the bottom circuit layer 21 of the transparent flexible circuit layer 2. The other connection method is the same as the first embodiment.

It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A rollable flexible transparent display screen is characterized in that the display screen is composed of a plurality of display screen modules;

the display screen module comprises a multilayer structure, wherein the multilayer structure comprises a driving IC, a transparent flexible circuit layer, an LED flip chip and transparent flexible glue;

the transparent flexible circuit layer is composed of a plurality of layers of transparent films and a circuit layer.

2. The rollable flexible transparent display screen according to claim 1, wherein the transparent flexible circuit layer comprises a bottom layer circuit layer, a bottom layer transparent film, a middle layer circuit layer, a top layer transparent film, and a top layer circuit layer, which are sequentially arranged, and adjacent layers are bonded through transparent pure glue.

3. The rollable flexible transparent display screen of claim 2, wherein the transparent flexible glue is provided in two pieces and located on the outer side of the top circuit layer and the bottom circuit layer, respectively.

4. The rollable flexible transparent display screen of claim 2, wherein the bottom layer circuit layer, the middle layer circuit layer and the top layer circuit layer are overlapped and wired, and are wired in a grid structure.

5. The rollable flexible transparent display screen of claim 2, wherein the bottom and top wiring layers are coated with a tin layer.

6. The rollable flexible transparent display screen according to any one of claims 2 to 5, wherein the driving ICs are disposed on the bottom circuit layer, the LED flip chip is directly soldered on the top circuit layer, and the LED flip chip and the driving ICs are connected through wires and via holes;

7. The rollable flexible transparent display screen of claim 1, wherein the LED flip chips are composed of R chips, G chips and B chips, and the LED flip chips are provided with a plurality of groups.

8. The rollable flexible transparent display screen of claim 7, wherein each group of the LED flip chips is electrically connected to another group of LED flip chips and the driver ICs by wires.

9. A rollable flexible transparent display screen according to claim 1, wherein the transparent film is a transparent PI film or a transparent PA film.