CN114882805A

CN114882805A - LED display device

Info

Publication number: CN114882805A
Application number: CN202210665981.6A
Authority: CN
Inventors: 张海波; 何胜斌
Original assignee: Shenzhen Zhaochi Jingxian Technology Co ltd
Current assignee: Jiangxi Zhaochi Jingxian Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-08-09

Abstract

The embodiment of the invention discloses an LED display device, which comprises: a PCB board; the LED lamp comprises a PCB board, a plurality of luminous pixels and a plurality of LED lamp beads, wherein the plurality of luminous pixels are arranged on the PCB board in an array mode according to the row and column directions, each luminous pixel comprises a plurality of LED lamp beads, each LED lamp bead at least comprises two luminous bodies, each luminous body in each LED lamp bead is independently provided with a common pole end or a non-common pole end, and the LED lamp beads are singly connected between the common pole ends or the non-common pole ends in the LED lamp beads in an internal electric mode. According to the LED display device provided by the embodiment of the invention, the plurality of luminous bodies are integrated on one LED lamp bead, so that not only is a through hole prevented from being added on a PCB (printed circuit board), but also the packaging times of LED chips are reduced, and meanwhile, the image quality of LED display is improved.

Description

LED display device

Technical Field

The invention relates to the technical field of LED display, in particular to an LED display device.

Background

Currently, in the LED display field, LED Chip packaging generally adopts three modes, namely SMD (Surface Mounted Devices), IMD (Integrated Matrix Devices), and COB (Chip On Board package). The SMD packages the LED chip into surface-mounted devices, and then fixes the devices on the PCB board through a chip mounter, wherein the packaged devices can be single red, green and blue devices or a group of red, green and blue devices; in the IMD, two, four, six or more groups of lamp beads are integrally packaged in a small unit, which is also called as 'N-in-one' or 'all-in-one', and then the all-in-one devices are fixed on a PCB (printed circuit board) by a chip mounter; in the COB, an LED light-emitting chip is directly bonded with a module carrier (generally, a PCB) with high precision, and a driving device on the module carrier is connected to the driving device through a dielectric.

However, no matter what the above packaging form is adopted, when the LED lamps (single or combined) are assembled into a module (lamp panel), the scanning lines and the data lines intersect on the PCB. Although the SMD and IMD package method can avoid the addition of through holes on the PCB, for example, in patent CN111462643A, a group of RGB LEDs or multiple groups of RGB LEDs are packaged on a device, and pads of multiple diodes are connected on the device in advance to relieve the wiring pressure fixed to the PCB, it adds a packaging process, and it cannot package the RGB LEDs on a substrate.

In addition, when the LED display screen is designed, the distance between the LED lamp beads is reduced to improve the image quality of LED display, however, the distance between the LED lamp beads is excessively reduced, the wiring on the PCB needs to be more complicated, and the manufacturing difficulty and cost of the PCB are greatly increased.

Therefore, how to avoid increasing through holes on the PCB, reduce the number of times of LED chip packaging, and improve the image quality of LED display is a technical problem that needs to be solved urgently in the current LED display field.

Disclosure of Invention

In view of the defects of the prior art, the embodiment of the invention provides an LED display device, which not only avoids adding through holes on a PCB, but also reduces the number of times of LED chip packaging, and improves the image quality of LED display.

To solve the above problems, an embodiment of the present invention provides an LED display device, including:

a PCB board;

the LED lamp comprises a PCB board, a plurality of luminous pixels and a plurality of LED lamp beads, wherein the PCB board is provided with the luminous pixels, the luminous pixels are arranged in an array mode in the row and column directions, each luminous pixel comprises a plurality of LED lamp beads, each LED lamp bead at least comprises two luminous bodies, each luminous body in each LED lamp bead is independently provided with a common electrode end or a non-common electrode end, and the common electrode ends or the non-common electrode ends in each LED lamp bead are electrically connected in the LED lamp beads;

if the common electrode ends in the light-emitting pixels in each row are electrically connected to form one or more scanning lines, the non-common electrode ends in the light-emitting pixels in each row are electrically connected to form one or more data lines;

if the common terminals in each row of the light-emitting pixels are electrically connected to form one or more scanning lines, the non-common terminals in each row of the light-emitting pixels are electrically connected to form one or more data lines.

Preferably, in the LED display device, the light emitting colors of the light emitting bodies in the same LED lamp bead are the same.

Preferably, in the LED display device, each of the light emitters in the same LED bead shares one substrate.

Preferably, in the LED display device, the common terminal or the non-common terminal of the same LED lamp bead is located at two ends of the LED lamp bead.

Preferably, in the LED display device, one of the scan lines is electrically connected to a gate signal pin of a gate chip, and one of the data lines is electrically connected to a data signal pin of a driving chip.

Preferably, in the LED display device, the common electrode terminals between the LED lamp beads with the same light-emitting color in each row of the light-emitting pixels are electrically connected to form one scan line.

Preferably, in the LED display device, the common terminals of the pixels in each row are electrically connected to form one scan line.

Preferably, in the LED display device, the non-common electrode terminals between the LED lamp beads with the same light-emitting color in each row of the light-emitting pixels are electrically connected to form one data line.

Preferably, in the LED display device, each of the non-common terminals in each of the columns of the light emitting pixels is electrically connected to form one of the data lines.

Preferably, in the LED display device, the light-emitting pixels include red LED lamp beads, green LED lamp beads, and blue LED lamp beads.

Compared with the prior art, the embodiment of the invention provides the LED display device, at least two luminous bodies are arranged in the LED lamp beads, each luminous body in each LED lamp bead is independently configured with a common pole end or a non-common pole end, the common pole ends or the non-common pole ends in a single LED lamp bead are electrically connected inside the LED lamp beads, and meanwhile, when the common pole ends in each row of luminous pixels are electrically connected to form one or more scanning lines, the non-common pole ends in each row of luminous pixels are electrically connected to form one or more data lines; when the common terminals of the light-emitting pixels in each row are electrically connected to form one or more scan lines, the non-common terminals of the light-emitting pixels in each column are electrically connected to form one or more data lines. According to the LED display device provided by the embodiment of the invention, the plurality of luminous bodies are integrated on one LED lamp bead, so that not only is a through hole prevented from being added on a PCB (printed circuit board), but also the packaging times of LED chips are reduced, and the image quality of LED display is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

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

fig. 3 is another schematic structural diagram of an LED display device according to an embodiment of the present invention;

fig. 4 is another schematic structural diagram of an LED display device according to an embodiment of the present invention;

fig. 5 is another schematic structural diagram of an LED display device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an LED lamp bead in an LED display device provided in an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "column", "row", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to 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 device according to an embodiment of the present invention, and fig. 2 is another schematic structural diagram of the LED display device according to the embodiment of the present invention. As shown in fig. 1 and 2, an LED display device includes:

a PCB board 10;

the LED lamp comprises a PCB (printed circuit board) 10, a plurality of luminous pixels 20 arranged on the PCB 10 in an array manner in the row and column directions, wherein each luminous pixel 20 comprises a plurality of LED lamp beads, each LED lamp bead at least comprises two luminous bodies, each luminous body in each LED lamp bead is independently configured with a common pole end or a non-common pole end, and the common pole ends or the non-common pole ends in a single LED lamp bead are electrically connected in the LED lamp beads;

if the common terminals of the light-emitting pixels 20 in each row are electrically connected to form one or more scanning lines 30, and the non-common terminals of the light-emitting pixels 20 in each column are electrically connected to form one or more data lines 40; if the common terminals of the light-emitting pixels 20 in each row are electrically connected to form one or more scan lines 30, the non-common terminals of the light-emitting pixels in each column are electrically connected to form one or more data lines 40.

It can be understood that when each LED lamp bead at least comprises two luminous bodies, each LED lamp bead can at least comprise one common electrode end, two non-common electrode ends and two luminous bodies, and meanwhile, each LED lamp bead can also at least comprise two common electrode ends, two non-common electrode ends, two luminous bodies and the like.

Specifically, in the LED display device provided in fig. 1, two common terminals, two non-common terminals and two light emitting bodies are disposed in the LED lamp beads, the common terminals in each row of the light emitting pixels 20 are electrically connected to form one or more scanning lines 30, the non-common terminals in each column of the light emitting pixels 20 are electrically connected to form one or more data lines 40, and the light emitting bodies are integrated into one LED lamp bead, so that not only is the increase of through holes on the PCB board 10 avoided, but also the number of times of packaging the LED chip is reduced, and the image quality of the LED display is improved.

In addition, on the premise of not increasing the number of the LED lamp beads, the number of the luminous bodies is increased in a single LED lamp bead, so that two or more LED lamp beads can be pasted at one time when the LED display device is pasted compared with the traditional LED lamp beads, the number of the LED lamp beads in the LED display device is obviously reduced, and the production efficiency of the LED display device is improved.

Specifically, one of the scanning lines 30 is electrically connected with a gating signal pin of a gating chip, one of the data lines 40 is electrically connected with a data signal pin of a driving chip, and the gating chip is provided with at least one gating signal pin, that is, one gating chip can be connected with one or more scanning lines 30 through the gating signal pin to gate the LED lamp beads in each row of the light-emitting pixels 20; the driving chip is provided with at least one data signal pin, that is, one driving chip can be connected with one or more data lines 40 through the data signal pin to perform constant current control on the LED lamp beads in each row of the light emitting pixels 20. The gating chip and the driving chip can be integrated into one chip, and the gating chip and the driving chip can also be respectively and independently used as one chip for scanning driving. The model of the chip can be TLC 6985, and can also be MBI 515.

In addition, in the LED display device provided in fig. 2, each LED lamp bead may be provided with two light emitting bodies, one common electrode terminal and two non-common electrode terminals, the common terminal may be a first common terminal 201, and the two non-common terminals may be a first non-common terminal 202 and a second non-common terminal 204, where the first common terminal 201 of each LED bead in each row of the light emitting pixels 20 is connected to form a scan line 30, the scanning line 30 is electrically connected with a gating signal pin on a gating chip independently, a first non-common electrode end 202 and a second non-common electrode end 204 in a single LED lamp bead are connected inside the LED lamp bead through connecting metal, non-common electrode ends between two adjacent LED lamp beads in the same row of light-emitting pixels 20 are connected on a PCB1 board 10 to form data lines 40 with the same number of light-emitting colors, and each data line 40 is electrically connected with one data signal pin on a driving chip. Wherein, two luminous bodies in this embodiment are because connect through connecting metal 50 in LED lamp pearl, so two luminous bodies can't control alone, and two luminous bodies can't light alone promptly, can only light simultaneously or extinguish simultaneously.

In other embodiments, as shown in fig. 3, each LED lamp bead may have two light emitters, two common terminals and two non-common terminals, the two common terminals of each LED lamp bead are not connected to each other and are directly connected to a single common terminal of an adjacent LED lamp bead, meanwhile, two non-common electrode ends in each LED lamp bead are connected through a connecting metal 50 inside the LED lamp bead, that is, the first common terminal 201 and the second common terminal 203 in a single LED lamp bead are not connected, and the first non-common terminal 202 and the second non-common terminal 204 in a single LED lamp bead are connected inside the LED lamp bead through the connecting metal 50, so that not only can the two light-emitting bodies in each LED lamp bead be controlled independently, and under the prerequisite that does not increase LED lamp pearl quantity, through the quantity that increases the luminous body in the single LED lamp pearl, still avoided scan line and data line to appear alternately problem simultaneously.

In some embodiments, as shown in fig. 1, the LED lamp bead is provided with two light emitters, two common terminals and two non-common terminals, and the common terminals in each row of light emitting pixels 20 are electrically connected to form a scan line 30 and electrically connected to a row gating pin of the gating chip; meanwhile, the non-common electrode ends between the LED lamp beads with the same light-emitting color in each row of the light-emitting pixels 20 are electrically connected to form a data line 40, and electrically connected to a row data signal pin of the driving chip.

In some embodiments, the LED lamp bead may have two light emitters, two common terminals and two non-common terminals, and each common terminal in each row of the light emitting pixels 20 is electrically connected to form a scan line 30 and is electrically connected to a row gating pin of the gating chip; meanwhile, the non-common terminals of the light-emitting pixels 20 in each column are electrically connected to form a data line 40, and are electrically connected to a column data signal pin of the driving chip.

In some embodiments, as shown in fig. 4, the LED lamp beads may be provided with two light emitters, two common terminals and two non-common terminals, the common terminals of the LED lamp beads with the same light emitting color in each row of the light emitting pixels 20 are electrically connected to form a scan line 30, and are electrically connected to a row gating pin of the gating chip; meanwhile, the non-common electrode ends between the LED lamp beads with the same light-emitting color in each row of the light-emitting pixels 20 are electrically connected to form a data line 40, and electrically connected to a row data signal pin of the driving chip.

In some embodiments, as shown in fig. 5, the LED lamp beads may be provided with two light emitters, two common terminals and two non-common terminals, the common terminals of the LED lamp beads with the same light emitting color in each row of the light emitting pixels 20 are electrically connected to form a scan line 30, and are electrically connected to a row gating pin of the gating chip; meanwhile, the non-common terminals of the light-emitting pixels 20 in each column are electrically connected to form a data line 40, and are electrically connected to a column data signal pin of the driving chip.

It is understood that the scan lines and the data lines in fig. 1 to 5 may be interchanged in rows and columns. For example, when the common terminals of the light emitting pixels 20 in each row are electrically connected to form one or more scan lines 30, the non-common terminals of the light emitting pixels 20 in each column are electrically connected to form one or more data lines 40. Therefore, after the scanning lines and the data lines are exchanged in rows and columns, the PCB 10 can be prevented from being provided with through holes, the packaging times of the LED chips are reduced, and the image quality of the LED display is improved.

It can also be understood that the non-common-pole ends of the LED lamp beads in the LED display device provided by the present invention can be connected through the connecting metal 50 inside the LED lamp beads, and can also be wired outside the LED lamp beads, that is, wired on the PCB board 10. Similarly, the common-pole ends of the LED lamp beads can be connected to each other through the connecting metal 50 inside the LED lamp beads, and the wires can also be routed outside the LED lamp beads, that is, the wires are routed on the PCB 10.

It should be noted that, when the common-pole ends of the single LED lamp beads are connected inside the LED lamp beads through the connecting metal 50, the non-common-pole ends of the LED lamp beads may be connected inside the LED lamp beads through the connecting metal 50 to the PCB for routing, or may be individually routed on the PCB 10; similarly, when the non-common-pole ends of the single LED lamp beads are connected in the LED lamp beads through the connecting metal 50, the common-pole ends of the LED lamp beads can be connected in the LED lamp beads through the connecting metal 50 to be wired on the PCB, and can also be separately wired on the PCB. The connection mode of the common extreme and the non-common extreme in each LED lamp bead can be selected according to practical application, and is not specifically limited in the application.

In addition, it can be understood that when more than two common poles exist in a single LED lamp bead, the common poles can be connected through the connecting metal 50 inside the LED lamp bead, or part of the common poles can be connected through the connecting metal 50 inside the LED lamp bead, or all the common poles can be wired outside the LED lamp bead; similarly, when more than two non-common poles exist in a single LED lamp bead, the non-common poles can be connected with each other through the connecting metal 50 in the LED lamp bead, part of the non-common poles can be connected with each other through the connecting metal 50 in the LED lamp bead, and all the non-common poles can be wired outside the LED lamp bead. Therefore, the common-pole and non-common-pole connection modes in the LED lamp beads can be selected according to practical application, and are not specifically limited in the application.

It should be noted that the situation of the LED lamp bead provided in this application is not limited to the above embodiment, and more than two common terminals and more than two non-common terminals may also exist in a single LED lamp bead, and at this time, the connection modes between the common terminals and between the non-common terminals may be connected through the connection metal 50 inside the LED lamp bead, or may be routed outside the LED lamp bead, which may be selected according to specific situations, and this embodiment is not specifically limited.

In the LED display device provided in the embodiment of fig. 1, a first common terminal 201, a second common terminal 203, a first non-common terminal 202, a second non-common terminal 204, and two light emitting bodies may be disposed in an LED lamp bead, the first non-common terminal 202 and the second non-common terminal 204 are disposed between the first common terminal 201 and the second common terminal 203, the first common terminal 201 and the second common terminal 203 are electrically connected inside the LED lamp bead, the common terminals of the same LED lamp bead are electrically connected inside the LED lamp bead through a connecting metal 50, and the connecting metal 50 is disposed inside the LED lamp bead, so that the scan line 30 and the data line 40 do not intersect on the PCB 10, thereby eliminating the technical problem of adding a through hole on the PCB 10. 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, the LED lamp beads may include two light emitting bodies, two common terminals and two non-common terminals, the common terminals of each of the LED lamp beads are electrically connected inside the LED lamp beads, and the common terminals of two adjacent LED lamp beads are electrically connected on the PCB board 10. Specifically, two common electrode terminals and two non-common electrode terminals are arranged in each LED lamp bead, the two non-common electrode terminals are arranged between the two common electrode terminals, the two common electrode terminals are electrically connected in the LED lamp bead, the common electrode terminals in the same LED lamp bead are electrically connected in the LED lamp bead through the connecting metal 50, meanwhile, the connecting metal 50 is arranged inside the LED lamp beads and is arranged according to the arrangement mode of the conventional LED lamp beads, thereby completely avoiding the phenomenon that the scanning lines 30 and the data lines 40 form cross on the PCB 10, eliminating the need of routing the scanning lines 30 and the data lines 40 on different board layers, and also eliminating the need of adding through holes at the cross, meanwhile, the luminous density of the LED lamp beads in the LED display screen is increased, the yield of the PCB 10 is improved, the manufacturing difficulty of the PCB 10 is reduced, the number of layers of the PCB 10 is reduced, and the image quality of LED display is improved.

It can be understood that in the LED display device provided in the embodiment of the present invention, not all the LED lamp beads need to be provided with two common terminals, two non-common terminals, and two light emitting bodies, if the LED lamp beads in each light emitting pixel 20 are sequentially arranged on the PCB 10 from top to bottom, the first row of the LED lamp beads in the first row of the light emitting pixels 20 only needs to be provided with one common terminal, two non-common terminals, and two light emitting bodies, and at this time, the phenomenon that the scan line 30 and the data line 40 in the LED display device intersect with each other on the PCB 10 can also be completely avoided.

It can also be understood that the common electrode end of the LED lamp bead can be a common cathode end or a common anode end. The common-pole end of the LED lamp bead may be determined as a common-cathode end or a common-anode end according to practical application, which is not specifically limited in the embodiment of the present invention.

For example, when the common electrode of the LED lamp bead is the common cathode, two anodes, two cathodes and two light emitting bodies may be disposed in the LED lamp bead, the two cathodes are electrically connected through the connecting metal 50, and meanwhile, the two cathodes are all 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 two anodes in each LED lamp bead are disposed between the two cathodes.

In some embodiments, the common terminal or the non-common terminal of the same LED lamp bead is located at two ends of the LED lamp bead. Specifically, as shown in fig. 1, when the common-pole end of a single LED lamp bead is located at two ends of the LED lamp bead, the non-common-pole end of the LED lamp bead may be disposed between the two common-pole ends; as shown in fig. 2, when the non-common-pole end of a single LED lamp bead is located at two ends of the LED lamp bead, the common-pole end of the LED lamp bead may be disposed between the two common-pole ends.

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

In addition, the light emitting colors of the light emitting bodies in the LED lamp beads at the same position in each light emitting pixel 20 are the same, the light emitting colors of the light emitting bodies in a single LED lamp bead are the same, the light emitting bodies in the same LED lamp bead share one substrate, and each light emitting body in the same LED lamp bead is individually configured with one non-common pole end or one common pole end.

In other embodiments, in each of the red LED lamp bead 210, the green LED lamp bead 220, and the blue LED lamp bead 230, the first common terminal 201 and the second common terminal 203 in each LED lamp bead are electrically connected through the connection metal 50 inside thereof by the connection metal 50.

In some embodiments, the common terminal between two adjacent LED beads is electrically connected on the surface of the PCB board 10.

In addition, when the LED display device provided by the embodiment of the present invention is used for LED display, the light-emitting pixels 20 are the same, that is, the LED lamp beads at the corresponding positions in each light-emitting pixel 20 are the same, and the LED lamp beads in the light-emitting pixels 20 are vertically arranged, at this time, different light-emitting colors and light-emitting luminances can be displayed in the LED display screen only by gating the scanning lines 30 row by using the gating chip and lighting the LED lamp beads column by using the driving chip through the data lines 40, so that a complete image is formed in the LED display screen.

The following is a detailed explanation of a specific structure diagram of an LED lamp bead having two common terminals, two non-common terminals and two light emitters on the PCB board 10.

As shown in fig. 6, two anode substrate pads 112 and two cathode substrate pads 111 are disposed on the PCB 10, wherein the length and the width of the anode substrate pads 112 are both 80 microns, and the length of the cathode substrate pads 111 is 160 microns, and the width is 80 microns; LED lamp pearl includes: the LED lamp comprises a first light emitter, a second light emitter, a substrate 2011, a first P-type welding plate 20121, a second P-type welding plate 20122, a first N-type welding plate 20131 and a second N-type welding plate 20132, wherein the first N-type welding plate 20131 and the second N-type welding plate 20132 are two common cathode ends of an LED lamp bead respectively, the first light emitter is electrically connected with an anode substrate welding plate 112 through the first P-type welding plate 20121, the second light emitter is electrically connected with the anode substrate welding plate 112 through the second P-type welding plate 20122, and the first P-type welding plate 20121 and the second P-type welding plate 20122 are electrically connected with the anode substrate welding plate 112 through metal tinThen, the first N-type pad 20131 and the second N-type pad 20132 are electrically connected to a cathode substrate pad 111 through tin metal, the first light emitter and the second light emitter are disposed between the substrate 2011 and the PCB 10, the first light emitter and the second light emitter each include a P-type conductive metal layer 2014, an N-type conductive metal layer 2015, a bragg reflector 2016 and a current spreading layer 2017, the P-type semiconductor 2018, the N-type semiconductor 2019, the insulating protective layer 2020 and the active light emitting layer 2021 are arranged on the bragg reflector 2016, a P-type bragg reflector through hole and an N-type bragg reflector through hole are formed in the bragg reflector 2016, the first P-type pad 20121 and the second P-type pad 20122 are electrically connected with the P-type conductive metal layer 2014 through the P-type bragg reflector through hole, the first N-type pad 20131 and the second N-type pad 20132 are electrically connected with the connecting metal through the N-type bragg reflector through hole, and the bragg reflector 2016 is 28 layers of SiO. ₂ And Ti ₃ O ₅ A stack of pairs of materials 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 protective layer through hole and an N-type insulating protective layer through hole are formed in the insulating protective layer 2020, the P-type conductive metal layer 2014 is electrically connected to the current spreading layer 2017 through the P-type insulating protective layer through hole, the current spreading layer 2017 is electrically connected to the P-type semiconductor 2018 to excite holes, and the N-type conductive metal layer 2015 is electrically connected to a step of the N-type semiconductor 2019 through the N-type insulating protective 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, the exposed part of the N-type semiconductor 2019 is used as a conductive step, and the material of the insulating protective layer is selected from SiO ₂ 。

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 LED display device provided by the embodiment of the present invention is described in detail above, and the principle and the embodiment of the present invention are explained herein by applying specific embodiments, and the description of the embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. An LED display device, comprising:

a PCB board;

2. The LED display device of claim 1, wherein the light emitting colors of the light emitting bodies in the same LED lamp bead are the same.

3. The LED display device of claim 1, wherein each of the light emitters in the same LED bead shares a substrate.

4. The LED display device of claim 1, wherein the common terminal or the non-common terminal of the same LED lamp bead is located at two ends of the LED lamp bead.

5. The LED display device of claim 1, wherein one of the scan lines is electrically connected to a gate signal pin of a gate chip, and one of the data lines is electrically connected to a data signal pin of a driving chip.

6. The LED display device of claim 1, wherein the common terminals of the LED beads with the same light-emitting color in each row of the light-emitting pixels are electrically connected to form one scan line.

7. The LED display device of claim 1, wherein the common terminals of the pixels in each row are electrically connected to form a scan line.

8. The LED display device of claim 1, wherein the non-common terminals between the LED beads of the same light emitting color in each column of the light emitting pixels are electrically connected to form one data line.

9. The LED display device of claim 1, wherein each of the non-common terminals of each of the columns of the light-emitting pixels is electrically connected to form one of the data lines.

10. The LED display device of claim 1, wherein the light-emitting pixels comprise red, green and blue LED beads.