CN209766472U - Flip transparent rollable flexible film LED display screen - Google Patents

Abstract

The utility model discloses a transparent mantle LED display screen that can roll up of flip-chip, including transparent film, circuit layer, driver IC, LED flip chip and transparent adhesive tape, the display screen includes multilayer structure altogether, follows supreme multilayer FPC flexible circuit board and the high temperature resistant transparent film that shows with the flexible film stack of circuit such as first flexible film, first circuit layer, second flexible film, second circuit layer, third flexible film, third circuit layer from down, and the mode welding that the LED chip adopted the flip-chip is on FPC flexible circuit board, and driver IC sets up on the FPC flexible circuit board. The utility model saves the cost of traditional lamp bead bracket, gold thread, paster and the like by directly welding the flip LED chip on the FPC flexible circuit board, adopts the FPC flexible high temperature resistant circuit board made of transparent material, and other flexible films and transparent films are made of transparent material, thereby not influencing lighting; the bonding pads are arranged on the connecting plate, and users can freely splice the bonding pads according to actual needs through the mutual connection of the bonding pads, so that the size of the LED flexible screen can be determined.

Description

Flip transparent rollable flexible film LED display screen

Technical Field

the utility model relates to a flexible screen field especially relates to a transparent mantle LED display screen that can roll up of flip-chip.

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, require the LED display screen to transport conveniently, the screen body is frivolous, easy dismounting with can changeable molding, in order to reach this purpose, prior art adopts to reduce unit box size and realizes, what prior art adopted in addition is with LED chip welding LED lamp pearl, utilizes the lamp pearl to give out light, but adopts the lamp pearl just need adopt support, gold thread, paster etc. manufacturing cost improves by a wide margin. And the latest high-temperature resistant transparent bendable film technology is combined, the application range of the product is enlarged, the product can be attached to glass to display advertisements, and the lighting and the attractiveness of the glass are not influenced.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists among the above-mentioned technique, the utility model provides a screen body is frivolous, can freely splice, reduction in production cost, improve production efficiency's ultra-thin transparent full-color LED display screen.

In order to realize the above object, the utility model provides a flip-chip transparent can roll up mantle LED display screen, the display screen includes pellicular, circuit layer, driver IC, LED flip chip and transparent adhesive tape, and the display screen includes multilayer structure altogether, from supreme multilayer FPC flexible circuit board and the high temperature resistant pellicular that presents in proper order for circuit and flexiplast stack such as first flexiplast, first circuit layer, second flexiplast, second circuit layer, third flexiplast, third circuit layer down, the mode welding that the LED chip adopted the flip-chip is on FPC flexible circuit board, driver IC sets up on the FPC flexible circuit board.

As the best choice, the LED chips comprise LED flip red chips, LED flip green chips and LED flip blue chips, and the LED chips with three colors are uniformly arranged together and fixed on the transparent FPC flexible circuit board to form a plurality of LED light-emitting boards.

Preferably, one end of each driving IC is electrically connected with the FPC, the other end of each driving IC is connected with the LED chip, and the driving ICs are multiple and comprise an amplifying IC, a decoder and a scanning IC.

As the best choice, adopt the pad to be connected between first piece LED luminescent plate and the second piece LED luminescent plate, the pad includes power supply pad and signal pad, power supply pad and signal pad exist in pairs, set up respectively the both ends of LED luminescent plate.

As the best choice, FPC flexible circuit board one end links to each other with the LED luminescent layer, and the other end is connected with the power pack, the power pack includes control card, signal keysets and power.

As the best choice, transparent flexible high accuracy circuit board is adopted on first circuit layer or second circuit layer, and first circuit layer and second circuit layer all are equipped with many circuits, and the interval between the circuit is 0.05-0.10 mm.

Preferably, the first circuit layer and the second circuit layer are connected by a via hole.

the utility model has the advantages that: the utility model saves the cost of traditional lamp bead bracket, gold thread, paster and the like by directly welding the flip LED chip on the FPC flexible circuit board, improves the production efficiency, facilitates the use, has better consistency of surface integrated display, adopts the FPC flexible circuit board as a transparent material, and adopts other flexible films and transparent films as transparent materials, thereby not influencing the lighting; the connecting plate is provided with a power supply bonding pad and a signal bonding pad, and through the mutual connection of the two bonding pads, a user can freely splice the bonding pads according to actual needs, so that the size of the LED flexible screen can be determined.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

Fig. 2 is a schematic diagram of a bonding pad of the present invention;

Fig. 3 is a storage state diagram of the present invention.

The main element symbols are as follows:

1. First flexible film 2, first circuit layer

3. Second flexible film 4, second circuit layer

5. Third flexible film 6, solder paste

7. Glue 8 and flip LED chip

9. Pad 10 and circuit board

11. Power pack 12, pivot.

Detailed Description

In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.

The utility model adopts the transparent flexible high temperature resistant film as the substrate, and two circuit layers in different layers are arranged as the conductive medium to replace the conventional printed circuit board, and the first circuit layer and the second circuit layer are connected together through the perforation to realize the communication of the circuits; then adopt the mode of pad to connect flip-chip LED chip, with the LED chip welding on FPC flexible circuit board, a plurality of LED chip installations form the display screen, because transparent flexible membrane shape can changeable bending, folding even, can reach the unable degree that reaches of current LED display screen in the aspect of transportation and demonstration, utilize the pad to realize the concatenation of a plurality of LED display screens simultaneously, realize the unlimited extension of display screen.

Referring to fig. 1, the utility model discloses a flip-chip transparent rollable flexible film LED display screen, the display screen includes transparent film, circuit layer, driver IC, LED flip chip and transparent adhesive, the display screen includes multilayer structure altogether, from the bottom to the supreme multilayer FPC flexible circuit board and the high temperature resistant transparent film that appears for circuit and flexible film stack such as first flexible film 1, first circuit layer 2, second flexible film 3, second circuit layer 4, third flexible film 5, third circuit layer, LED chip adopts the mode of flip-chip to weld on FPC flexible circuit board, driver IC sets up on FPC flexible circuit board; the LED chips comprise LED flip red chips, LED flip green chips and LED flip blue chips, and the LED chips with three colors are uniformly arranged together and fixed on a transparent FPC (flexible printed circuit) board to form a plurality of LED light-emitting boards. Under the actual use condition, adopt the three primary colors as the luminescent plate of a basis, utilize the luminescent plate concatenation of a plurality of bases to become great LED luminescent plate, whole display screen just can install the demand like this and carry out the luminous of different colours.

In this embodiment, drive IC one end links to each other with FPC flexible circuit board electrical property, and the other end links to each other with the LED chip, and drive IC is provided with a plurality ofly, including amplifying IC, decoder and scanning IC, adopt the pad to connect between the LED luminescent layer, and the pad includes power supply pad and signal pad, and the power supply pad exists in pairs with the signal pad, sets up the both ends at the LED luminescent plate respectively, and FPC flexible circuit board one end links to each other with the LED luminescent layer, and the other end is connected with the power pack, and the power pack includes the control card, signal keysets and power. In this embodiment, the connection between the connection boards is realized by using pads, and the power supply pads and the signal pads exist in pairs and are used in cooperation with each other, more specifically, the power supply pads are electrically connected with a power supply in the power supply box, and the signal pads are electrically connected with a signal adapter board in the power supply box to receive instruction information of the control card; after the FPC flexible circuit board receives the instruction information on the signal bonding pad, the instruction information is transferred to a drive IC for processing and finally acts on the LED luminous layer, so that the LED luminous layer displays an optical image according to the instruction; when needs accomodate, the LED display screen is accomodate along the pivot, finally accomodates completely together, is convenient for accomodate and transport.

The working principle of the driving IC in the application is as follows:

After the drive IC chip is powered on and reset, the scan IC is used for receiving data for the first time, the default IC11(Din1) receives data, and when the chip detects that a signal is input into the port, the port is always kept to receive the data; to enable reception of data.

The driving IC chip is reset electrically and receives a constant current value setting command, then a PWM setting command is received, the current is controlled through a decoder and an amplifying IC, a control command is generated by combining data information, and the control command finally acts on the LED chip, so that the LED chip emits light with different colors according to PWM waveforms with corresponding duty ratios; the current is amplified by adopting the amplifying IC, so that the high image quality of the display screen is realized, and in the specific application process of the application, a special chip of a 16-bit source is preferentially adopted.

The first circuit layer or the second circuit layer adopts a transparent flexible high-precision circuit board, the first circuit layer and the second circuit layer are both provided with a plurality of circuits, and the distance between the circuits is 0.05-1.5 mm; the first circuit layer and the second circuit layer are connected through holes. In this embodiment, in order to prevent the LED chip from causing a display blind area during the operation and to make the displayed image quality more vivid and natural, the distance between the circuit boards is particularly close to each other as much as possible.

The utility model has the advantages that:

1) The flip LED chip is directly welded on the FPC flexible circuit board, so that the cost of a traditional lamp bead bracket, a gold thread, a paster and the like is saved, the production efficiency is improved, the use is convenient, and the surface integrated display consistency is better;

2) The transparent film is packaged into the LED screen, so that the practical range is greatly increased, and the product characteristics are increased;

3) The bonding pads can be used for connecting other connecting plates in an unlimited manner, so that the LED display screen can be spliced in an unlimited manner, and the actual requirements of users are met.

The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims (7)

1. the utility model provides a transparent mantle LED display screen that can roll up of flip-chip, a serial communication port, the display screen includes transparent film, circuit layer, driver IC, LED flip chip and transparent adhesive tape, and the display screen includes multilayer structure altogether, follows supreme multilayer FPC flexible circuit board and the high temperature resistant transparent film that presents in proper order for circuit and flexible membrane stack such as first flexible film, first circuit layer, second flexible film, second circuit layer, third flexible film, third circuit layer from down, and the mode welding that the LED chip adopted the flip chip is on FPC flexible circuit board, driver IC sets up on the FPC flexible circuit board.

2. The flip-chip transparent rollable flexible film LED display screen of claim 1, wherein the LED chips comprise a red-on-LED chip, a green-on-LED chip and a blue-on-LED chip, and the three LED chips are uniformly arranged together and fixed on a transparent FPC flexible circuit board to form a plurality of LED light-emitting panels.

3. the flip-chip transparent rollable flexible film LED display screen of claim 2, wherein one end of the driver IC is electrically connected to the FPC flexible circuit board, and the other end is connected to the LED chip, and the driver IC is provided in plurality including an amplifier IC, a decoder, and a scan IC.

4. The flip-chip transparent rollable flexible film LED display screen of claim 2, wherein the first LED lighting board is connected to the second LED lighting board by bonding pads, the bonding pads comprise power supply bonding pads and signal bonding pads, and the power supply bonding pads and the signal bonding pads are paired and respectively disposed at two ends of the LED lighting board.

5. The flip-chip transparent rollable flexible film LED display screen of claim 1, wherein one end of the FPC flexible circuit board is connected to the LED light emitting layer and the other end is connected to a power supply box, the power supply box comprising a control card, a signal adapter board and a power supply.

6. The flip-chip transparent rollable flexible film LED display screen according to claim 1, wherein the first circuit layer or the second circuit layer adopts a transparent flexible high-precision circuit board, the first circuit layer and the second circuit layer are both provided with a plurality of circuits, and the precision of the distance between the circuits reaches 0.05 mm.

7. The flip-chip transparent rollable flexible film LED display screen of claim 1, wherein the first and second circuit layers are connected by vias.