CN211702463U

CN211702463U - LED transparent display screen

Info

Publication number: CN211702463U
Application number: CN201922156031.7U
Authority: CN
Inventors: 陈剑卿; 赖金洪; 周佩先
Original assignee: Hunan Chuangjin Technology Co ltd
Current assignee: Hunan Chuangjin Technology Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-10-16
Anticipated expiration: 2029-12-05

Abstract

An LED transparent display screen comprising: a transparent substrate for providing a carrier; the transparent pressure-sensitive adhesive layer is arranged on the transparent substrate; the bonding pad is arranged on the transparent pressure sensitive adhesive layer, and an LED device is fixed on the bonding pad; the driving wire is arranged on the transparent pressure-sensitive adhesive layer, one end of the driving wire is connected with the bonding pad, and the other end of the driving wire is used for connecting the flexible circuit board; the power line is arranged on the transparent pressure-sensitive adhesive layer, one end of the power line is connected with the bonding pad, and the other end of the power line is connected with the flexible circuit board; and the transparent front protective plate is arranged on the LED device and is bonded with the transparent substrate through the transparent non-conductive optical cement. The utility model discloses an adopt superfine wire to replace transparent conducting layer laser etching's structure, the cost is about being reduced. And the adoption of the superfine wire can effectively reduce the impedance and improve the luminous efficiency, and the luminous efficiency can reach more than 80 percent. In addition, the structure of printing by adopting the superfine wires can be more compact, the space between the LED devices can be effectively reduced, and the distance can be reduced to about 15 mm.

Description

LED transparent display screen

Technical Field

The utility model belongs to transparent display screen field, concretely relates to LED transparent display screen.

Background

In recent years, the LED display application industry has been steadily developed, and the overall scale has been promoted year by year, and has become an important component in the LED industry chain, and LED display application products represented by LED display screens have been widely used in various fields of society and economy. With the driving of application markets, the LED transparent display screen becomes a hot spot of current research, can enrich visual contents without blocking a sight, and is widely applied to places such as subways, airports, glass trestles, advertising media, chain stores, superstores, enterprise exhibition halls, museums, science and technology museums.

The current manufacturing mode of the LED transparent display screen is as follows: the method comprises the steps of firstly coating a transparent conductive layer on a transparent substrate and etching a driving wire, then fixing an LED device at one end of an electrode on the transparent substrate by conductive adhesive, then pressing an external driving circuit to the other end of the driving wire by ACF, and finally bonding a front panel and the substrate by a transparent non-conductive material. However, the transparent display screen manufactured by adopting the mode is high in cost, the resistance of the formed driving electrode is large, the LED device is easy to emit light unevenly, the power consumed on the electrode is far greater than the light emitting power, the integral light emitting efficiency is less than 50%, the density of the LED device is small, the distance between the LED devices is difficult to achieve 30mm, and the width of a single LED transparent display screen is less than 1.2 m.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a LED transparent display screen, LED transparent display screen's simple structure has solved the problem that manufacturing cost is high, luminous efficiency is low.

According to the utility model discloses LED transparent display screen, include: a transparent substrate for providing a carrier; the transparent pressure-sensitive adhesive layer is arranged on the upper surface of the transparent substrate; the bonding pad is arranged on the upper surface of the transparent pressure sensitive adhesive layer, and an LED device is fixed on the bonding pad; the driving wire is arranged on the upper surface of the transparent pressure-sensitive adhesive layer, one end of the driving wire is connected with the bonding pad, and the other end of the driving wire is used for connecting the flexible circuit board; the power line is arranged on the upper surface of the transparent pressure-sensitive adhesive layer, one end of the power line is connected with the bonding pad, and the other end of the power line is connected with the flexible circuit board; and the transparent front protective plate is arranged on the LED device and is bonded with the transparent substrate through transparent non-conductive optical cement.

According to the utility model discloses LED transparent display screen has following technological effect at least: by adopting the driving line and the power line to replace the structure of the transparent conducting layer by laser etching, the cost is reduced by about 20 percent. And the impedance is effectively reduced, the luminous efficiency is improved, and the luminous efficiency can reach more than 80%. In addition, the structure of printing by adopting the superfine wires can be more compact, the space between the LED devices can be effectively reduced, and the distance can be reduced to about 15 mm.

According to some embodiments of the present invention, the number of the pads, the driving lines, and the LED devices is N; the number of the power lines is M; one end of each of the N driving wires is correspondingly connected with the N bonding pads one by one; the other ends of the N driving wires are connected with the flexible circuit board; each bonding pad is fixedly provided with one LED device; the M power lines are used for supplying power to the N LED devices.

According to some embodiments of the invention, each of the drive wires has a diameter of 0.01mm to 0.05 mm.

According to some embodiments of the invention, each of the power lines has a diameter of 0.05mm to 0.2 mm; the total cross-sectional area of M power lines is 2/3-1 of the total cross-sectional area of N drive lines.

According to some embodiments of the present invention, the flexible printed circuit board is distributed on two sides of the transparent substrate; the N driving wires and the M power wires are connected with the flexible circuit board closest to the driving wires and the M power wires.

According to some embodiments of the invention, the LED device employs an RGB three-color LED.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of an embodiment of the present invention (excluding LED components and a transparent front protective plate);

FIG. 2 is an enlarged schematic view of a portion of FIG. 1;

fig. 3 is a schematic structural diagram of an embodiment of the second aspect of the present invention;

fig. 4 is an enlarged schematic view of a portion of fig. 3.

Reference numerals:

a transparent substrate 100,

A bonding pad 200,

A driving line 310, a power line 320,

A flexible circuit board 400,

A transparent front protective plate 500,

The LED device 600.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, if there are first, second, third, fourth, etc. described, it is only for the purpose of distinguishing technical features, and it is not understood that relative importance is indicated or implied or that the number of indicated technical features is implicitly indicated or that the precedence of the indicated technical features is implicitly indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

The LED transparent display screen according to the embodiment of the present invention is described below with reference to fig. 1 to 4.

According to the utility model discloses LED transparent display screen, include: the transparent substrate 100, the transparent pressure sensitive adhesive layer, the pads 200, the driving lines 310, the power lines 320, and the transparent front protective plate 500. A transparent substrate 100 for providing a carrier; a transparent pressure sensitive adhesive layer disposed on the upper surface of the transparent substrate 100; the bonding pad 200 is arranged on the upper surface of the transparent pressure sensitive adhesive layer, and the LED device 600 is fixed on the bonding pad 200; the driving wire 310 is arranged on the upper surface of the transparent pressure-sensitive adhesive layer, one end of the driving wire is connected with the bonding pad 200, and the other end of the driving wire is used for connecting the flexible circuit board 400; a power line 320 disposed on the upper surface of the transparent pressure sensitive adhesive layer, one end of which is connected to the pad 200 and the other end of which is connected to the flexible circuit board 400; the transparent front protective plate 500 is disposed on the LED device 600 and bonded to the transparent substrate 100 through a transparent non-conductive adhesive.

Referring to fig. 1 to 4, a transparent pressure sensitive adhesive layer is disposed on the transparent substrate 100 and may be used to fix the ultra-fine conductive lines. The bonding pad 200, the driving line 310 and the power line 320 are all made of ultra-fine wires, one end of the driving line 310 and one end of the power line 320 are respectively connected with the bonding pad 200, and then the driving line 310 and the power line 320 are connected with the external head type circuit board in a pressing mode. The LED device 600 is fixed on the bonding pad 200, and the LED device 600 is finally connected to the flexible circuit board 400 through the bonding pad 200, the driving line 310 and the power line 320, so as to finally realize external control of the LED device 600. A transparent front protection plate 500 is further disposed on the LED, and the transparent front protection plate 500 is bonded to the transparent substrate 100 to realize final protection. In practical use, the resistance value of the laser etching structure is large, so that the laser etching structure is difficult to manufacture in a large size, and the resistance value can be effectively reduced by adopting the superfine wire structure, so that the foundation for building a large-size LED transparent display screen is provided. When printing the ultra-fine conductive lines, one-sided outgoing lines of the driving lines 310 and the power lines 320 can be selected according to actual requirements, and two-sided outgoing lines can also be selected. The ultra-fine wire is usually ultra-fine copper wire, and when ultra-low impedance wire is needed, ultra-fine silver wire, ultra-fine gold wire or other metal materials can be used.

According to the utility model discloses a LED transparent display screen, through adopting superfine wire to replace transparent conducting layer laser etching's structure, the cost is reduced about 20%. And the adoption of the superfine wires as the materials of the driving wire 310 and the power wire 320 effectively reduces the impedance and improves the luminous efficiency, and the luminous efficiency can reach more than 80 percent. In addition, the structure of printing through adopting superfine wire can be more compact, can effectual reduction LED device 600 between the interval, can reduce to about 15 mm. In addition, the superfine wire structure is adopted, the size limitation can be effectively broken through, the size width can reach 1.8 meters when a single-side wire outlet mode is used, and the size width can reach 3.6 meters when a double-side wire outlet mode is used.

According to the LED transparent display screen of the present invention, there are N pads 200, driving wires 310, and LED devices 600; there are M power lines 320; one end of each of the N driving lines 310 is connected to the N pads 200 in a one-to-one correspondence; the other ends of the N driving wires 310 are connected to the flexible circuit board 400; an LED device 600 is fixed on each pad 200; the M power lines 320 are used to supply power to the N LED devices 600. The N LED devices 600 can be individually controlled by the N driving lines 310. In addition, because the LED transparent display screen is adopted, the power line 320 should not be too thick, and therefore when the large-size LED transparent display screen is encountered, the power line 320 needs to be divided into M, which not only ensures the power supply effect, but also does not obstruct the view.

In some embodiments of the present invention, the diameter of each drive wire 310 is 0.01mm to 0.05 mm. The light-emitting diode display panel has the advantages that the increase of line resistance and the reduction of light-emitting efficiency caused by over-thinness are avoided, and the display effect is not influenced by over-coarseness.

In some embodiments of the present invention, each power line 320 has a diameter of 0.05mm to 0.2 mm; the total sectional area of the M power lines 320 is 2/3 to 1 of the total sectional area of the N driving lines 310. The power line 320 has a too large diameter, which is likely to affect the visual field, but is not suitable for passing a large current, and therefore, the power line 320 needs to be selected in consideration of both of these points.

In some embodiments of the present invention, the flexible circuit board 400 is plural and distributed on both sides of the transparent substrate 100; the N driving lines 310 and the M power lines 320 are connected to the closest flexible printed circuit board 400. When the size of the transparent LED display screen is large, if a single flexible wiring board 400 is continuously used, the required size of the flexible wiring board 400 may be large. In addition, when the power line 320 and the driving line 310 are led out on two sides, a plurality of circuit boards are directly connected on two sides, so that a large amount of wiring time can be saved, the production efficiency can be improved, and the fault rate can be reduced. Meanwhile, the resistance values of the driving wire and the power wire can be effectively reduced by adopting the double-side outgoing wire, and the luminous efficiency is improved.

In some embodiments of the present invention, the LED device 600 employs RGB three-color LEDs. Adopt RGB three-colour LED, can effectual improvement user experience. In some occasions where colored light is not needed, the single-color LED can be directly used to reduce the use cost.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and those skilled in the art can understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An LED transparent display screen, comprising:

a transparent substrate (100) for providing a carrier;

the transparent pressure-sensitive adhesive layer is arranged on the upper surface of the transparent substrate (100);

the bonding pad (200) is arranged on the upper surface of the transparent pressure sensitive adhesive layer, and an LED device (600) is fixed on the bonding pad (200);

the driving wire (310) is arranged on the upper surface of the transparent pressure-sensitive adhesive layer, one end of the driving wire is connected with the bonding pad (200), and the other end of the driving wire is used for being connected with a flexible circuit board (400);

the power line (320) is arranged on the upper surface of the transparent pressure-sensitive adhesive layer, one end of the power line is connected with the bonding pad (200), and the other end of the power line is connected with the flexible circuit board (400);

and the transparent front protection plate (500) is arranged on the LED device (600) and is bonded with the transparent substrate (100) through transparent non-conductive optical cement.

2. The LED transparent display screen according to claim 1, wherein the number of the pads (200), the driving lines (310) and the LED devices (600) is N; the number of the power lines (320) is M; one ends of the N driving wires (310) are correspondingly connected with the N bonding pads (200) one by one; the other ends of the N driving wires (310) are connected with the flexible circuit board (400); each bonding pad (200) is fixed with one LED device (600); the M power lines (320) are used for supplying power to the N LED devices (600).

3. The LED transparent display screen of claim 2, wherein each of the driving lines (310) has a diameter of 0.01mm to 0.05 mm.

4. The LED transparent display screen of claim 3, wherein each power line (320) has a diameter of 0.05mm to 0.2 mm; the total cross-sectional area of the M power supply lines (320) is 2/3-1 of the total cross-sectional area of the N drive lines (310).

5. The LED transparent display screen according to claim 4, wherein the flexible circuit board (400) is distributed on two sides of the transparent substrate (100); the N drive lines (310) and the M power lines (320) are connected with the flexible circuit board (400) which is closest to the drive lines.

6. The LED transparent display screen of claim 1, wherein the LED device (600) is an RGB tricolor LED.