CN217485037U - LED display module and LED display screen - Google Patents

Abstract

The utility model discloses a LED display module assembly, LED display screen, LED display module assembly includes: a PCB board; the gating chip and the driving chip are arranged on the PCB; the LED lamp comprises a PCB (printed circuit board), a plurality of luminous pixels and a plurality of LED lamp beads, wherein the plurality of luminous pixels are arranged on the PCB and are arranged in an array, each luminous pixel comprises a plurality of LED lamp beads, each LED lamp bead comprises at least two common poles or two non-common poles, and the common poles or the non-common poles of the plurality of LED lamp beads are electrically connected in the LED lamp beads; if the LED lamp beads comprise at least two common poles, the common poles of all rows are connected, and the non-common poles of the LED lamp beads with the same light-emitting color in each row of light-emitting pixels are connected; if the LED lamp beads comprise at least two non-common-pole ends, the common-pole ends among the LED lamp beads in each row of the light-emitting pixels are connected; the non-common terminals of the same light-emitting color in each row of light-emitting pixels are connected with each other. The utility model discloses very big reduction the defective rate of PCB board, reduced the waste of material.

Description

LED display module and LED display screen

Technical Field

The utility model relates to a LED shows technical field, especially relates to a LED display module assembly, LED display screen.

Background

In the information age, especially in the 20 th century, display technology has been widely used as a window for human-computer interaction and information display in various aspects of entertainment, military, industry, medical treatment, and the like, such as mobile phones, televisions, computers, monitors, and the like. Displays have become important windows for people to obtain information and data, and are an indispensable part of people's daily life.

At present, when the LED display screen is designed, the scanning lines and the data lines are usually crossed when being wired on the PCB, and then through holes are needed to be added on the PCB for solving, however, the reject ratio of the PCB is extremely easy to increase due to the holes formed in the PCB, the waste of materials is caused, and the manufacturing difficulty and the manufacturing cost of the PCB are greatly improved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a not enough to prior art, the embodiment of the utility model provides a LED display module assembly, LED display screen aims at solving among the prior art when designing the LED display screen, PCB's the manufacturing degree of difficulty and the too high technical problem of manufacturing cost.

In a first aspect, an embodiment of the present invention provides a LED display module, which includes:

a PCB board;

the device comprises gating chips and driving chips, wherein the gating chips and the driving chips are arranged on the PCB, each gating chip comprises a gating signal pin, and each driving chip comprises a data signal pin;

the LED lamp comprises a PCB board, a plurality of light-emitting pixels and a plurality of LED lamp beads, wherein the plurality of light-emitting pixels are arranged on the PCB board and are arranged in an array manner in the row direction and the column direction, each light-emitting pixel comprises a plurality of LED lamp beads, each LED lamp bead comprises at least two common poles or two non-common poles, and the common poles or the non-common poles in the plurality of LED lamp beads are electrically connected inside the LED lamp beads;

if each LED lamp bead comprises at least two common terminals, the common terminals in each row of the light-emitting pixels are connected and are electrically connected with one gating signal pin separately, and the non-common terminals between the LED lamp beads with the same light-emitting color in each row of the light-emitting pixels are connected and are electrically connected with one data signal pin separately;

if each LED lamp bead comprises at least two non-common-pole ends, the common-pole ends among the LED lamp beads in each row of the luminous pixels are connected and are separately and electrically connected with one gating signal pin; the non-common-pole ends with the same light-emitting color in each row of the light-emitting pixels are connected with each other and are independently and electrically connected with one data signal pin.

Preferably, in the LED display module, the common terminals of each LED lamp bead are electrically connected to each other inside the LED lamp bead.

More preferably, in the LED display module, the common terminals in a single LED lamp bead are electrically connected to each other inside the LED lamp bead through a connecting metal.

Preferably, in the LED display module, the common electrode terminals between two adjacent LED lamp beads are electrically connected to the PCB.

Preferably, in the LED display module, the common electrode of the LED lamp beads is a common anode terminal or a common cathode terminal.

Preferably, in the LED display module, each of the light-emitting pixels includes a red LED lamp bead, a green LED lamp bead, and a blue LED lamp bead.

More preferably, in the LED display module, the red LED lamp beads are arranged in an array on the PCB.

More preferably, in the LED display module, the green LED lamp beads are arranged in an array on the PCB.

More preferably, in the LED display module, the blue LED lamp beads are arranged in an array on the PCB.

In a second aspect, an embodiment of the present invention provides a further LED display screen, which includes the LED display module set described in the first aspect.

Compared with the prior art, the embodiment of the utility model provides a LED display module assembly, LED display screen, through set up two at least common extreme or two non-common polar ends in each LED lamp pearl, solved scan line and data line and walked the line and need increase the technical problem of through-hole on PCB when alternately appearing, very big reduction the defective rate of PCB board, reduced the waste of material, reduced the manufacturing degree of difficulty and the manufacturing cost of PCB board.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural view of an LED display module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an LED display module according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an LED display module in the prior art;

fig. 4 is the embodiment of the utility model provides a structural schematic diagram of LED lamp pearl among LED display module assembly.

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 some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "column", "row", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used for convenience of description and simplicity of description only, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present application, the term "some embodiments" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as exemplary is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles disclosed herein.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an LED display module according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of an LED display module according to an embodiment of the present invention. As shown in fig. 1 and 2, an LED display module includes:

a PCB board 10;

the gate circuit comprises gate chips and driving chips, wherein the gate chips and the driving chips are arranged on the PCB 10, each gate chip comprises a gate signal pin, and each driving chip comprises a data signal pin;

the LED lamp comprises a plurality of luminous pixels 20 which are arranged on the PCB 10 and are arranged in an array mode in the row and column directions, each luminous pixel 20 comprises a plurality of LED lamp beads, each LED lamp bead comprises at least two common pole ends 201 or two non-common pole ends 202, and the common pole ends 201 or the non-common pole ends 202 in the plurality of LED lamp beads are electrically connected inside the LED lamp beads;

if each LED lamp bead includes at least two common terminals 201, the common terminals 201 in each row of the light-emitting pixels 20 are connected and electrically connected to one gating signal pin separately, and the non-common terminals 202 between the LED lamp beads with the same light-emitting color in each row of the light-emitting pixels 20 are connected and electrically connected to one data signal pin separately; if each LED lamp bead includes at least two non-common terminals 202, the common terminals 201 between the LED lamp beads in each row of the light-emitting pixels 20 are connected and individually electrically connected to one gating signal pin; the non-common terminals 202 of the same light-emitting color in each row of the light-emitting pixels 20 are connected with each other and are individually electrically connected to one of the data signal pins.

For example, when two common electrode terminals 201 and one non-common electrode terminal 202 exist in LED lamp beads, the common electrode terminals 201 in each row of the light emitting pixels 20 are connected to form a scanning line 30, the scanning line 30 is electrically connected to a strobe signal pin on a strobe chip alone, the LED lamp beads of the same light emitting color in each column of the light emitting pixels 20 are connected to form data lines 40 equal to the number of the light emitting colors, and each data line 40 is electrically connected to a data signal pin on a driving chip; when two non-common electrode ends 202 and one common electrode end 201 exist in the LED lamp beads, the common electrode ends 201 between the LED lamp beads in each row of the light emitting pixels 20 are connected to form one scanning line 30, the scanning line 30 is separately electrically connected to one gating signal pin on a gating chip, the non-common electrode ends 202 with the same light emitting color in each column of the light emitting pixels 20 are connected to form data lines 40 with the same number of light emitting colors, and each data line 40 is electrically connected to one data signal pin on a driving chip.

It can be understood that when the number of the common-electrode ends 201 in the LED lamp bead is more than two, the number of the non-common-electrode ends 202 may also be more than one; when the number of the non-common-electrode ends 202 in the LED lamp bead is more than two, the number of the common-electrode ends 201 may also be more than one. The number of the common terminal 201 and the number of the non-common terminal 202 in the LED lamp bead can be selected according to practical applications, and is not specifically limited in this embodiment.

It can also be understood that the utility model provides a scanning line 30 and data line 40 among the LED display module assembly can exchange on the line direction, can solve scanning line and data line this moment equally and walk the technical problem that the line needs increase the through-hole on PCB when crossing appears, and then reduced the defective rate of PCB board, reduce the waste of material, reduce the manufacturing degree of difficulty and the manufacturing cost of PCB board. For example, if each of the LED lamp beads includes two common terminals 201 and one non-common terminal 202, when the common terminals 201 in each row of the light-emitting pixels 20 are connected and electrically connected to one gating signal pin separately, the non-common terminals 202 between the LED lamp beads with the same light-emitting color in each row of the light-emitting pixels 20 are connected and electrically connected to one data signal pin separately.

Referring to fig. 3, fig. 3 is a schematic structural diagram of an LED display module in the prior art. In the embodiment shown in fig. 3, after the common terminals 201 of the LED lamp beads in each row of the light-emitting pixels 20 are electrically connected, only one scan line 30 is formed, and the non-common terminals 202 of the LED lamp beads with the same color in each column of the light-emitting pixels 20 are electrically connected to form one data line 40, as can be seen from fig. 3, the data line 40 formed after the LED lamp beads with the same color in each column of the light-emitting pixels 20 are connected to intersect with the scan line 30 formed after the LED lamp beads with the same color are connected to each other in each row of the light-emitting pixels 20, so that a through hole must be added on the PCB board 10 to avoid the problem.

And the embodiment of the utility model provides an among the LED display module assembly, as shown in fig. 1, only need be provided with two in LED lamp pearl altogether extreme 201 and a non-common polar end 202, non-common polar end 202 sets up between two common polar end 201, be connected at the inside electricity of LED lamp pearl between common polar end 201, it specifically can realize the electricity through connecting metal 50 to connect between LED lamp pearl in same LED lamp pearl is inside specifically, connecting metal 50 sets up the inside at LED lamp pearl simultaneously, and then make scanning line 30 and data line 40 not form alternately on PCB board 10, the technical problem that needs increase the through-hole on PCB board 10 has been saved. Wherein, when the LED lamp bead is manufactured, the connection metal 50 is formed by deposition on the substrate in the LED lamp bead.

In some embodiments, as shown in fig. 1, if each of the LED lamp beads includes two common terminals 201 and one non-common terminal 202, the common terminals 201 in each of the LED lamp beads are electrically connected inside the LED lamp bead, and the common terminals 201 between two adjacent LED lamp beads are electrically connected on the PCB board 10. Specifically, through set up two common extreme 201 and a non-common extreme 202 in every LED lamp pearl, non-common extreme 202 sets up between two common extreme 201, two are connected at the inside electricity of LED lamp pearl between common extreme 201, it is inside specifically can realize the electricity through connecting metal 50 to connect between common extreme 201 in the same LED lamp pearl, connecting metal 50 sets up the inside at LED lamp pearl simultaneously, and arrange according to the mode of arranging of conventional LED lamp pearl, and then avoid scan line 30 and data line 40 to form criss-cross phenomenon on PCB board 10 completely, need not to walk line 30 and data line 40 at different sheet layers, also need not to increase the through-hole in the junction equally, not only improved PCB board 10's yields, and reduced PCB board 10's the number of piles, very big reduction PCB board 10's the manufacturing degree of difficulty and manufacturing cost.

It can be understood that the embodiment of the utility model provides an in the LED display module assembly, not all LED lamp pearls all need to set up two and altogether extreme 201, if LED lamp pearl among every luminescent pixel 20 down arranges in proper order on PCB board 10 from last, then first line LED lamp pearl among the first line luminescent pixel 20 need not to set up two and altogether extreme 201, also can avoid scan line 30 and data line 40 to form crisscross phenomenon on PCB board 10 among the LED display module assembly completely this moment.

It can also be understood that the common terminal 201 of the LED lamp bead may be a common cathode terminal or a common anode terminal. Wherein, the common terminal 201 of LED lamp pearl can be confirmed to be common cathode end or common anode end according to practical application, the embodiment of the utility model provides an in do not specifically limit.

For example, if each of the LED lamp beads includes two common electrodes 201 and one non-common electrode 202, when the common electrode 201 of the LED lamp bead is a common cathode electrode, an anode and two cathodes may be disposed in the LED lamp bead, the two cathodes are electrically connected through the connecting metal 50, the two cathodes are both welded on the PCB board 10, the adjacent cathodes between the two adjacent LED lamp beads are electrically connected on the PCB board 10, and the anode in each LED lamp bead is disposed between the two cathodes.

In some embodiments, as shown in fig. 2, if each of the LED lamp beads includes two non-common terminals 202 and one common terminal 201, the non-common terminals 202 in each of the LED lamp beads are electrically connected inside the LED lamp bead, and the non-common terminals 202 between two adjacent LED lamp beads are electrically connected on the PCB board 10. Specifically, through set up two non-homopolar ends 202 and a homopolar 201 in every LED lamp pearl, homopolar 201 sets up between two non-homopolar ends 202, connect in the inside electricity of LED lamp pearl between two non-homopolar ends 202, in the same LED lamp pearl between non-homopolar 202 in LED lamp pearl inside specifically can realize the electricity through connecting metal 50 and connect, connecting metal 50 sets up the inside at LED lamp pearl simultaneously, and arrange according to the mode of arranging of conventional LED lamp pearl, and then avoid scanning line 30 and data line 40 to form criss-cross phenomenon on PCB board 10 completely, need not to walk scanning line 30 and data line 40 at different sheet layers, also need not to increase the through-hole in the intersection, not only improved PCB board 10's yields, and reduced PCB board 10's the number of piles, very big reduction PCB board 10's the manufacturing degree of difficulty and manufacturing cost.

In some embodiments, each of the light emitting pixels 20 includes a red LED lamp bead 210, a green LED lamp bead 230, and a blue LED lamp bead 220; the red LED lamp beads 210 are arranged in an array on the PCB 10; the green LED lamp beads 230 are arranged on the PCB 10 in an array manner, and the blue LED lamp beads 220 are arranged on the PCB 10 in an array manner.

It can be understood that each light emitting pixel 20 may be composed of three LED lamp beads, or may be composed of four LED lamp beads. When the light-emitting pixel 20 is composed of three LED lamp beads, the three LED lamp beads may be a red LED lamp bead 210, a green LED lamp bead 230, and a blue LED lamp bead 220; when the light-emitting pixel 20 is composed of four LED lamp beads, the four LED lamp beads may be a red LED lamp bead 210, a green LED lamp bead 230, a blue LED lamp bead 220, and a white LED lamp bead.

It can also be understood that one or more light-emitting bodies can be arranged in the LED lamp bead. If a plurality of luminous bodies are arranged in the LED lamp bead, two non-common-pole ends 202 can be arranged in the LED lamp bead, and the two luminous bodies can share one substrate, so that the density of LEDs in the LED display screen is indirectly improved, and the resolution of the LED display screen is indirectly improved.

The specific structure of the LED lamp bead having two common terminals 201 and one non-common terminal 202 on the PCB board 10 is explained in detail below.

As shown in fig. 4, the PCB 10 is provided with an anode substrate pad 112 and two cathode substrate pads 111, wherein the length and the width of the anode substrate pad 112 are both 80 microns, and the length of the cathode substrate pad 111 is 160 microns, and the width is 80 microns; LED lamp pearl includes: the LED comprises a luminous body, a substrate 2011, a P-type welding disc 2012, a first N-type welding disc 20131 and a second N-type welding disc 20132, wherein the first N-type welding disc 20131 and the second N-type welding disc 20132 are two common cathode ends of LED lamp beads respectively, the luminous body is electrically connected with an anode substrate welding disc 112 through the P-type welding disc 2012, the P-type welding disc 2012 is electrically connected with the anode substrate welding disc 112 through metal tin, the first N-type welding disc 20131 and the second N-type welding disc 20132 are electrically connected with a cathode substrate welding disc 111 through metal tin respectively, the luminous body is arranged between the substrate 2014 and a PCB 10, the luminous body comprises a P-type conductive metal layer 2014, an N-type conductive metal layer 2015, a Bragg reflection layer 2016, a current expansion layer 2020, a P-type semiconductor 2018, an N-type semiconductor 2019, an insulating protection layer and an active light emitting layer 2021, a P-type Bragg reflection layer through hole and an N-type Bragg reflection layer through hole are arranged on the Bragg reflection layer 2016, the P-type welding disc is electrically connected with the P-type conductive metal layer through hole and the P-type conductive metal layer 20118, the P-type welding disc is electrically connected with the first N-type conductive metal layer through hole The type bonding pad 20131 and the second N-type bonding pad 20132 are electrically connected with the connecting metal through an N-type Bragg reflection layer through hole, and the Bragg reflection layer 2016 is formed by 28 layers of SiO ₂ And Ti ₃ O ₅ A material pair stack is formed; the P-type semiconductor 2018 is 80 microns long and 50 microns wide, and the N-type semiconductor 2019 is 100 microns long and 55 microns wide; a P-type insulating protection layer through hole and an N-type insulating protection layer through hole are formed in the insulating protection layer 2020, the P-type conductive metal layer 2014 is electrically connected with the current expansion layer through the P-type insulating protection layer through hole, the current expansion layer is electrically connected with the P-type semiconductor 2018 to excite holes, and the N-type conductive metal layer 2015 is electrically connected with the step of the N-type semiconductor 2019 through the N-type insulating protection layer through hole to excite electrons; the forward projection of the P-type semiconductor 2018 is smaller than that of the N-type semiconductor 2019, and the exposed part of the N-type semiconductor 2019 is used asThe material of the conductive step and the insulating protective layer is selected from SiO ₂ 。

It can be understood that two or more than two common-pole ends 201, non-common-pole ends 202 or light-emitting bodies may be arranged in the LED lamp bead, and the number of the common-pole ends 201, the non-common-pole ends 202 or the light-emitting bodies in the LED lamp bead may be selected according to a specific actual situation, which is not specifically limited in this embodiment.

Additionally, the embodiment of the utility model provides a still LED display screen, it includes the LED display module assembly that above-mentioned embodiment mentioned.

The embodiment of the utility model provides a LED display screen, through set up two at least utmost points 201 altogether in every LED lamp pearl, non-utmost point end 202 sets up between two utmost points 201 altogether simultaneously, and will be each line in the luminescence pixel in be connected and gate signal pin of electricity connection alone between the utmost point 201, simultaneously with each row in the luminescence pixel in be connected and the data signal pin of electricity connection alone between the non-utmost point end 202 of the LED lamp pearl of same luminescent color, and then avoided appearing alternately in order to carry out the technical problem who solves through increasing the through-hole between data line and the scanning line, very big reduction the defective rate of PCB board, the waste of material has been reduced, the manufacturing degree of difficulty and the manufacturing cost of PCB board have been reduced.

In a specific implementation, each unit or structure may be implemented as an independent entity, or may be combined arbitrarily to be implemented as one or several entities, and the specific implementation of each unit or structure may refer to the foregoing embodiments, which are not described herein again.

The above detailed description is given to the LED display module and the LED display screen provided by the embodiments of the present invention, and the specific examples are applied herein to explain the principles and embodiments of the present invention, and the description of the above embodiments is only used to help understand the method and core concept of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be changes in the specific embodiments and the application range, and in summary, the content of the present specification should not be understood as a limitation to the present invention.

Claims (10)

1. The utility model provides a LED display module assembly which characterized in that includes:

a PCB board;

the system comprises gating chips and driving chips, wherein the gating chips and the driving chips are arranged on the PCB, each gating chip comprises a gating signal pin, and each driving chip comprises a data signal pin;

the LED lamp comprises a PCB board, a plurality of light-emitting pixels and a plurality of LED lamp beads, wherein the plurality of light-emitting pixels are arranged on the PCB board and are arranged in an array manner in the row direction and the column direction, each light-emitting pixel comprises a plurality of LED lamp beads, each LED lamp bead comprises at least two common poles or two non-common poles, and the common poles or the non-common poles in the plurality of LED lamp beads are electrically connected inside the LED lamp beads;

if each LED lamp bead comprises at least two common terminals, the common terminals in each row of the light-emitting pixels are connected and are electrically connected with one gating signal pin separately, and the non-common terminals between the LED lamp beads with the same light-emitting color in each row of the light-emitting pixels are connected and are electrically connected with one data signal pin separately;

if each LED lamp bead comprises at least two non-common-pole ends, the common-pole ends among the LED lamp beads in each row of the luminous pixels are connected and are separately and electrically connected with one gating signal pin; the non-common-pole ends with the same light-emitting color in each row of the light-emitting pixels are connected with each other and are independently and electrically connected with one data signal pin.

2. The LED display module of claim 1, wherein the common terminals of each of the LED beads are electrically connected internally of the LED bead.

3. The LED display module of claim 2, wherein the common terminals of the individual LED beads are electrically connected to each other inside the LED beads via a connecting metal.

4. The LED display module of claim 1, wherein the common terminal between two adjacent LED beads is electrically connected to the PCB.

5. The LED display module of claim 1, wherein the common terminal of the LED beads is a common anode terminal or a common cathode terminal.

6. The LED display module of claim 1, wherein each of the light-emitting pixels comprises a red LED bead, a green LED bead, and a blue LED bead.

7. The LED display module of claim 6, wherein the red LED beads are arranged in an array on the PCB.

8. The LED display module of claim 6, wherein the green LED beads are arranged in an array on the PCB.

9. The LED display module of claim 6, wherein the blue LED beads are arranged in an array on the PCB.

10. An LED display screen, characterized in that, comprises the LED display module set of any one of claims 1-9.

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