CN107195755A - A kind of flexible and transparent LED display and its processing method - Google Patents

Abstract

The invention discloses a flexible transparent LED display screen and a processing method thereof. The flexible transparent LED display screen includes a flexible transparent substrate and at least one circuit layer arranged on the flexible transparent substrate, and the adjacent circuit layer A flexible transparent protective film is provided between and on the surface of the circuit layer, and a contact point is provided on the circuit layer, and the contact point is exposed from the outermost layer of flexible transparent protective film, and the LED is electrically connected to the contact point The LED lamp is internally packaged with three primary color light-emitting chips of R, G, and B and a driving chip for driving the light-emitting chips of the three primary colors of R, G, and B to emit light. The flexible and transparent LED display screen and the processing method thereof have the advantages of high light transmittance, flexible installation, long service life, beautiful appearance, saving processing technology, and reducing production costs, etc., which are not available in the prior art.

Description

A kind of flexible transparent LED display screen and processing method thereof

technical field

The invention relates to a technical solution in the LED application field, in particular to a flexible transparent LED display screen and a processing method thereof.

Background technique

As LED technology becomes more and more mature, various products applied to LED technology also emerge as the times require. Light-emitting diode LED display is a device system that displays information by controlling the light emission of the LED matrix. In some special occasions, such as glass curtain walls, shop windows, three-dimensional billboards, stage backgrounds and other environments, LED display modules need to have good light transmission. At the same time, if the display can be bent and stretched, it can be easily installed and transported in non-planar areas. and maintenance; in addition, the existing display screen needs to add an additional power drive device, which will further cause the transparent area of the display screen to be greatly covered, reduce the light transmission performance of the product, and increase the cost of the product.

However, the existing display screens are generally difficult to meet the above requirements, and have technical defects such as poor light transmittance, easy breakage when bent, and short service life, which seriously limit the further development and application of this field.

In view of this, the purpose of the present invention is to provide a new technical solution to solve the existing technical defects.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a flexible transparent LED display and its processing method, which solves the technical defects of the prior art such as poor light transmittance, easy breakage and damage, and short service life.

The technical solution adopted by the present invention to solve its technical problems is:

A flexible transparent LED display screen, comprising a flexible transparent substrate and at least one circuit layer arranged on the flexible transparent substrate, a flexible transparent protective film is provided between adjacent circuit layers and on the surface of the circuit layer, the Contact points are arranged on the circuit layer and exposed from the outermost layer of flexible transparent protective film, and LED lamps are electrically connected to the contact points.

As an improvement of the above technical solution, the LED lamp is internally packaged with three primary color light-emitting chips of R, G, and B and a driver chip for driving the light-emitting chips of the three primary colors of R, G, and B to emit light.

As a further improvement of the above technical solution, the upper and lower surfaces of the flexible transparent substrate are respectively provided with a top layer circuit layer and a bottom layer circuit layer, the surface of the top layer circuit layer is covered with a top layer flexible transparent protective film, and the bottom layer flexible transparent protection film The surface of the film is covered with a bottom flexible transparent protective film, the top circuit layer has a circuit contact, the top flexible transparent protective film is provided with a window for matching the circuit contact, and the flexible transparent substrate is provided with a window for electrical contact. The conductive via holes connecting the top circuit layer and the bottom circuit layer, and the LED lamps are mounted on the circuit contacts.

As a further improvement of the above technical solution, the top circuit layer includes a DIN line, a GND line and a VDD line, the bottom circuit layer includes a DIN connection line and a GND connection line, and the DIN connection line is connected to the top layer circuit through a conductive via hole. The DIN line on the top layer is electrically connected, and the GND connection line is electrically connected to the GND line on the top layer circuit board through a conductive via hole.

As a further improvement of the above technical solution, the DIN line, the GND line and the VDD line on the top layer wiring layer are arranged in parallel to each other and form a set of top layer wiring groups, and the top layer wiring layer includes multiple sets of top layer wiring groups .

As a further improvement of the above technical solution, the DIN line in the odd-th top-level wiring group on the top-level circuit layer is bent at its right end and electrically connected to the right end of the DIN line in the next top-level wiring group; The DIN line in the even group top-level wiring group on the top-level wiring layer is electrically connected to the DIN line in the next top-level wiring group through a DIN connection line at its left end; multiple groups of top-level wiring in the top-level wiring layer The GND lines in the line group are electrically connected at their left ends through the GND connection lines; the VDD lines in the multiple top-level wiring groups in the top layer line layer are electrically connected at the left end through the VDD connection lines, and the VDD connection lines are set in the top line layer.

As a further improvement of the above technical solution, the materials used for the flexible transparent substrate, the top flexible transparent protective film and the bottom flexible transparent protective film are any one of PI, PET, PEN, PC, PVC, PMMA, PES; The top circuit layer and the bottom circuit layer are made of copper-clad platinum or silver-containing transparent conductive colloid or printed with polymer transparent conductive material.

As a further improvement of the above technical solution, the LED lamp is electrically connected to the circuit contact through silver glue; the flexible transparent substrate, the top flexible transparent protective film and the bottom flexible transparent protective film are all insulating films.

The present invention also provides a processing method for a flexible transparent LED display, comprising the following processing steps:

Step 1: Prepare the substrate base material, select a flexible transparent material to make a flexible transparent substrate, and the flexible transparent substrate is made of an insulating material;

Step 2: Set several patterned circuit layers on a flexible transparent substrate, and set a flexible transparent protective film between adjacent circuit layers and on the surface of the circuit layer, and cover the flexible transparent protective film on the top layer with an exposed circuit layer The window of the contact point, the conductive via hole for the electrical connection of the circuit layer on both sides is opened on the flexible transparent substrate, and the flexible transparent protective film is made of insulating material;

Step 3: The material prepared through the above steps is subjected to high-energy hot-press molding and formed into an integrated flexible transparent PCB board;

Step 4: Electrically connect the LED lamp to the contact point on the circuit layer through silver-containing transparent conductive glue.

As an improvement of the above technical solution, the LED lamp is an LED light-emitting element with a self-driven chip unit.

The beneficial effects of the present invention are: the present invention provides a flexible transparent LED display screen and a processing method thereof. The flexible transparent LED display screen is provided with a top circuit layer and a bottom circuit layer on a flexible transparent substrate, and the top circuit layer And the surface of the bottom line layer is provided with a top flexible protective film and a bottom flexible transparent protective film, and finally realizes that the entire display has flexibility and transparency, which can greatly improve the light transmittance of the display, and is suitable for transparent and flexible installation environments , wide application range, not easy to bend and damage, and long service life; in addition, the LED lights in this kind of display screen are LED light-emitting parts with self-driving chip units, no need to add additional driving devices in the display screen, which reduces the display The shading part of the screen improves the light transmittance and reduces the production cost; the processing method of the flexible transparent LED display provides a method for realizing the convenience of manufacturing the above-mentioned flexible transparent LED display, which is convenient for reducing costs and improving productivity, and has It helps to improve the light transmittance of the display screen and the production materials of the product, and indirectly improves the production efficiency of the production enterprise.

In a word, the flexible transparent LED display screen and its processing method solve the technical defects in the prior art such as poor light transmittance, easy breakage and damage, and short service life.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the wiring of the top circuit layer and the bottom circuit layer in the present invention.

detailed description

The idea, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The protection scope of the present invention. In addition, all the connection/connection relationships involved in the patent do not simply refer to the direct connection of components, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions. Each technical feature in the invention can be combined interactively on the premise of not conflicting with each other, refer to Fig. 1 and Fig. 2 .

A flexible transparent LED display, comprising a flexible transparent substrate 1 and at least one circuit layer arranged on the flexible transparent substrate 1, a flexible transparent protective film is provided between adjacent circuit layers and on the surface of the circuit layer, The circuit layer is provided with a contact point and the contact point is exposed from the outermost layer of flexible transparent protective film, and the LED lamp 6 is electrically connected to the contact point.

Preferably, the LED lamp 6 is packaged with three primary color light-emitting chips of R, G, and B and a driving chip for driving the light-emitting chips of the three primary colors of R, G, and B to emit light.

Preferably, the upper and lower surfaces of the flexible transparent substrate 1 are respectively provided with a top circuit layer 2 and a bottom circuit layer 3, the surface of the top circuit layer 2 is covered with a top flexible transparent protective film 4, and the bottom flexible transparent protection film The surface of the film 3 is covered with a bottom flexible transparent protective film 5, the top circuit layer 2 has a circuit contact 20, the top flexible transparent protective film 4 is provided with a window matching the circuit contact 20, and the flexible transparent substrate 1 is provided with a conductive via 11 for electrically connecting the top circuit layer 2 and the bottom circuit layer 3, and the circuit contact 20 is matched with the LED lamp 6 installed thereon.

Preferably, the top circuit layer 2 includes a DIN line 21, a GND line 22 and a VDD line 23, and the bottom circuit layer 3 includes a DIN connection line 31 and a GND connection line 32, and the DIN connection line 31 passes through a conductive via hole 11 is electrically connected to the DIN line 21 on the top circuit layer 2 , and the GND connection line 32 is electrically connected to the GND line 22 on the top circuit board 2 through the conductive via 11 .

Preferably, the DIN line 21, the GND line 22 and the VDD line 23 on the top layer circuit layer 2 are arranged parallel to each other and form a set of top layer wiring groups, and the top layer circuit layer 2 includes multiple sets of top layer wiring groups .

Preferably, the DIN line 21 in the odd top-level wiring group on the top-level wiring layer 2 is bent at its right end and electrically connected to the right end of the DIN line 21 in the next top-level wiring group; The DIN line 21 in the even top layer wiring group on layer 2 is electrically connected to the DIN line 21 in the next top layer wiring group through a DIN connection line 31 at its left end; The GND line 22 in the top layer routing group is electrically connected at its left end through the GND connecting line 32; connection, the VDD connection line 24 is set in the top circuit layer 2 .

Preferably, the material used for the flexible transparent substrate 1, the top flexible transparent protective film 4 and the bottom flexible transparent protective film 5 is any one of PI, PET, PEN, PC, PVC, PMMA, PES; the top layer The circuit layer 2 and the bottom circuit layer 3 are made of copper-clad platinum or silver-containing transparent conductive colloid or printed with polymer transparent conductive material.

Preferably, the LED lamp 6 is electrically connected to the circuit contact 20 through silver glue; the flexible transparent substrate 1 , the top flexible transparent protective film 4 and the bottom flexible transparent protective film 5 are all insulating films.

When implementing the present invention, since the flexible transparent substrate 1, the top flexible transparent protective film 4, and the bottom flexible transparent protective film 5 are all made of flexible and transparent materials, they have the characteristics of light transmission and flexible installation. 2 and the wiring structure of the bottom line layer 3 can greatly improve the pass-through rate of the display screen; The driving device can save costs, and more importantly, it can reduce the light transmission area of the display screen and increase the light transmission rate.

Based on the above-mentioned flexible transparent LED display screen, the present invention also provides a processing method for a flexible transparent LED display screen, comprising the following processing steps:

Step 1: Prepare the substrate base material, select a flexible transparent material to make a flexible transparent substrate 1, and the flexible transparent substrate 1 is made of an insulating material;

Step 2: Set several patterned circuit layers on the flexible transparent substrate 1, and set a flexible transparent protective film between adjacent circuit layers and on the surface of the circuit layer, and the flexible transparent protective film covering the top layer has a circuit layer that can be exposed The window of the contact point on the flexible transparent substrate 1 is provided with conductive vias 11 for electrical connection of the circuit layers on both sides, and the flexible transparent protective film is made of insulating material;

Step 3: The material prepared through the above steps is subjected to high-energy hot-press molding and formed into an integrated flexible transparent PCB board;

Step 4: Electrically connect the LED lamp 6 to the contact point on the circuit layer through silver-containing transparent conductive glue.

Preferably, the LED lamp 6 is an LED lighting element with a self-driving chip unit.

The processing method of the flexible transparent LED display can greatly simplify the existing processing technology, reduce production cost and production difficulty, and reduce production cost for enterprises.

The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the described embodiments, those skilled in the art can also make various equivalent deformations or replacements without violating the spirit of the present invention , these equivalent modifications or replacements are all within the scope defined by the claims of the present application.

Claims (7)

1. a kind of flexible and transparent LED display, it is characterised in that：Including flexible transparent substrate（1）And at least one layer is arranged on institute State flexible transparent substrate（1）Line layer, between the adjacent line layer and surface of line layer is provided with flexible and transparent diaphragm, Setting has point of contact on the line layer and the contact point exposes from one layer of flexible and transparent diaphragm of outermost, described to connect LED is electrically connected with contact（6）.

2. a kind of flexible and transparent LED display according to claim 1, it is characterised in that：The LED（6）Inside envelope Equipped with the trichromatic luminescence chip of R, G, B and the luminous driving chip of the trichromatic luminescence chip of driving R, G, B.

3. a kind of flexible and transparent LED display according to claim 1, it is characterised in that：The flexible transparent substrate（1） Upper and lower surface be respectively arranged with top line layer（2）And wiring underlayer layer（3）, the top line layer（2）Surface covered with Top layer flexible and transparent diaphragm（4）, the bottom flexible transparent protective film（3）Surface is covered with bottom flexible transparent protective film （5）, the top line layer（2）It is upper that there is line contact（20）, top layer flexible and transparent diaphragm（4）On to offer cooperation described Line contact（20）Window, the flexible transparent substrate（1）On offer for be electrically connected with top line layer（2）And bottom Line layer（3）Conductive via（11）, the line contact（20）Upper cooperation is provided with described LED（6）.

4. a kind of flexible and transparent LED display according to claim 3, it is characterised in that：The flexible transparent substrate （1）, top layer flexible and transparent diaphragm（4）And bottom flexible transparent protective film（5）The material used for PI, PET, PEN, PC, Any of PVC, PMMA, PES；The top layer circuit layer（2）And bottom circuit layer（3）To cover copper platinum or being the transparent of argentiferous Conductive rubber is formed to be printed by macromolecule transparent conductive material.

5. a kind of flexible and transparent LED display according to claim 3, it is characterised in that：The LED（6）Pass through silver Glue is electrically connected at the line contact（20）On；The flexible transparent substrate（1）, top layer flexible and transparent diaphragm（4）And bottom Layer flexible and transparent diaphragm（5）It is dielectric film.

6. a kind of processing method of flexible and transparent LED display, it is characterised in that：Including following procedure of processing：

Step 1：Preparing substrate base material, selection flexible and transparent material makes flexible transparent substrate（1）, the flexible transparent substrate （1）It is made for insulating materials；

Step 2：In flexible transparent substrate（1）It is upper that some graphical line layers are set, and between adjacent line layer and circuit Layer surface sets flexible and transparent diaphragm, be covered in the flexible and transparent diaphragm of top layer offer can be on exposed line layer contact The window of point, flexible transparent substrate（1）On open up for its both sides line layer electric connection conductive via（11）, flexible and transparent Diaphragm is made by insulating materials；

Step 3：The material prepared by above-mentioned steps is subjected to the flexible and transparent pcb board that high grace is hot-forming and is integrally formed；

Step 4：By the electrically conducting transparent glue of argentiferous by LED（6）It is electrically connected on the contact point on line layer.

7. a kind of processing method of flexible and transparent LED display according to claim 6, it is characterised in that：LED（6） For the LED illuminating parts with self-driven chip unit.