CN215069017U

CN215069017U - LED display screen based on static self-luminous module

Info

Publication number: CN215069017U
Application number: CN202120802579.9U
Authority: CN
Inventors: 徐惠能; 朱卫平; 洪荣辉
Original assignee: Fujian Qiangli Photoelectricity Co Ltd
Current assignee: Fujian Qiangli Photoelectricity Co Ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-12-07
Anticipated expiration: 2031-04-19

Abstract

The utility model discloses a LED display screen based on static self-luminous module, which is formed by splicing a plurality of display modules, each display module comprises a plurality of LED luminous plates, and each LED luminous plate comprises a circuit support plate and a plurality of static self-luminous modules; each static self-luminous module comprises a PCB and a plurality of luminous modules; the PCB is arranged on the circuit carrier plate and is in conduction connection with the circuit carrier plate, the plurality of light-emitting modules are arranged on the PCB and are in conduction connection with the PCB, each light-emitting module comprises a support, a driving IC and a plurality of LEDs, the product uses a plurality of static self-light-emitting modules, each light-emitting module of each static self-light-emitting module is internally provided with the driving IC, more than 80% of circuits are integrated into the module, the design and the circuit layout difficulty are greatly simplified, each light-emitting module is an independent maintainable module, the maintainability is high, the cost is low, and the convenience is brought for use.

Description

LED display screen based on static self-luminous module

Technical Field

The utility model belongs to the technical field of the LED technique and specifically relates to indicate a LED display screen based on static self-luminous module.

Background

The driving mode of the LED display screen is also called as a scanning mode, which refers to the ratio of the number of lines simultaneously lit to the number of lines in the whole area in a certain display area, and is mainly divided into two modes, namely static driving and dynamic driving. The static drive is to carry out point-to-point control from the output of the drive IC to the pixel point, and the static drive does not need a control circuit, so that the cost is higher than that of the dynamic drive, but the static drive has the advantages of good display effect, good stability, small brightness loss and the like. The dynamic driving is to control the point-to-column between the output of the driving IC and the pixel point, and the dynamic driving needs a control circuit, which is lower in cost than the static driving, but has poor display effect and large brightness loss.

The display screen is formed by splicing a plurality of display modules, the display modules are formed by connecting a plurality of display units in a transverse or longitudinal mode, and each display unit adopts a line-cascade or column-cascade driving mode, so that a driving chip of the display unit can adopt a driving chip with an ultra-small packaging volume, the display units do not need to be scanned and driven one by one, the static driving of the display units is realized, and the display brightness of the screen is improved.

At present, most display units are packaged devices including LED light emitters and driving ICs. With the reduction of the pixel pitch of the LED display screen, the number of packaged devices per unit area is increasing, so that the percentage of packaged devices in the cost of the whole screen is increasing. As long as the density is improved by one level, the increase of the requirement of the lamp beads is improved by about 50 percent. The full-color lamp pearl that present booth apart from adopting mainly is single form, because quantity is huge during the application, and production efficiency is low, appears the quality problem simultaneously easily. And because lamp pearl quantity is huge, before carrying out surface mounting, the design of PCB board will be more complicated, leads to production efficiency further to reduce.

In order to improve the production efficiency and reduce the production cost, the prior art provides a surface-mounted RGB-LED package module integrated with a driver IC, specifically, a metal base plate is made into a conductive circuit by etching or stamping, glue is wrapped on the metal base plate by a molding press, a support electrode for die bonding and wire bonding and a position for welding an IC driver module are reserved to form a package support, metal is plated on the package support, an RGB LED chip is die bonded on the support electrode, wire bonding is performed to form physical electrical connection, the IC driver module is welded, then a protective layer is injected on a light emitting unit, and the light emitting unit is cut into single package modules by a cutting machine; the packaging module is mounted on a PCB (printed circuit board), an RGB LED display screen is further manufactured, the light-emitting unit comprises an RGB LED chip fixed on the metal bottom plate, keys and wires for connecting the RGB LED chip and a support electrode, and a protective layer on the RGB LED chip, the keys and the wires for connecting the RGB LED chip and the support electrode, and the packaging module is provided with a plurality of light-emitting units and a common IC (integrated circuit) driving module.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a LED display screen based on static self-luminous module, which can effectively solve the problems of high complexity, difficult maintenance and high cost of the LED lamp used in the existing LED display screen.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an LED display screen based on static self-luminous modules is formed by splicing a plurality of display modules, each display module comprises a plurality of LED luminous panels, and each LED luminous panel comprises a circuit carrier plate and a plurality of static self-luminous modules; the circuit carrier plate is provided with a male head and a female seat, and two adjacent LED light-emitting plates are connected and conducted in a mutual insertion way through the male head and the female seat; each static self-luminous module comprises a PCB and a plurality of luminous modules; the PCB is arranged on the circuit carrier plate and is in conductive connection with the circuit carrier plate, the plurality of light-emitting modules are all arranged on the PCB and are in conductive connection with the PCB, and each light-emitting module comprises a bracket, a driving IC and a plurality of LEDs; the support is arranged on the PCB and provided with a packaging space, a partition board is arranged on the support to separate the packaging space into a plurality of accommodating cavities, the drive IC card is arranged between the partition boards and located in the packaging space, the drive IC is not higher than the packaging space, the drive IC is arranged on the support and is in conduction connection with the PCB, the LEDs are arranged on the support and are located in the corresponding accommodating cavities, each LED is in conduction connection with the drive IC, and the drive IC and the LEDs are packaged in the packaging space at the same time.

As a preferable scheme, the driving IC is located at the center of the package space, the number of the partition boards is four, the four partition boards divide the package space into four accommodating cavities, correspondingly, the number of the LEDs is four, the LEDs are respectively located in the four accommodating cavities, and the driving IC card is placed between the four partition boards.

Preferably, the LEDs are full-color LEDs, and the driver IC controls R, G, B data for each full-color LED.

Preferably, the light emitting module is attached to the surface of the PCB.

As a preferable scheme, a plurality of conductive circuits are arranged in the support, and each LED is connected with the driving IC through a corresponding conductive circuit.

As a preferred scheme, the number of the display modules is four, and the display modules are arranged in two rows and spliced in two columns.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:

the product uses a plurality of static self-luminous modules, each luminous module of each static self-luminous module is internally provided with a driving IC, more than 80 percent of circuits are integrated into the module, the difficulty of design and circuit layout is greatly simplified, the driving IC and a plurality of LEDs are simultaneously packaged in a packaging space, reduces the risk that the driving IC is exposed in the air and is easy to be broken down by static electricity, reduces the routing on the PCB, thereby reducing the interference of the parasitic capacitance and the parasitic inductance of the circuit to the circuit, and simultaneously, each light-emitting module is an independent maintainable module, high maintainability, low cost and convenient use, and in addition, the product realizes the point-to-point control of the chip to the lamp tube by static control, the chromaticity and the brightness of each lamp can be controlled independently, the display effect is improved, and the influence on other lamp tubes caused by the damage of the lamp tubes of a conventional display screen is avoided, so that the display effect is influenced.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a rear view of a preferred embodiment of the present invention;

FIG. 2 is a schematic perspective view of a display module according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view of the internal link of the static self-illumination module according to the preferred embodiment of the present invention;

FIG. 4 is a schematic diagram of the static self-light-emitting module according to the preferred embodiment of the present invention;

FIG. 5 is a schematic diagram of the static self-light-emitting module according to the preferred embodiment of the present invention;

FIG. 6 is a schematic diagram of data signals and clock signals of the static self-luminous module according to the preferred embodiment of the present invention;

FIG. 7 is a schematic diagram of a control circuit of the static self-illumination module according to the preferred embodiment of the present invention;

FIG. 8 is a block diagram of the interior of the static self-illumination module according to the preferred embodiment of the present invention;

fig. 9 is a schematic diagram of the pin arrangement after the static self-emitting module assembly is sealed according to the preferred embodiment of the present invention.

The attached drawings indicate the following:

100. display module 10 and LED light-emitting panel

11. Circuit carrier 111, male

112. Female base 12, static self-luminous module

121. PCB 122 and light emitting module

1221. Support 1222, drive IC

1223. LED 1224, spacer

101. A package space 202, conductive traces.

Detailed Description

Referring to fig. 1 to 9, a specific structure of a preferred embodiment of the present invention is shown, which is formed by splicing a plurality of display modules 100, each display module 100 includes a plurality of LED light-emitting panels 10, and each LED light-emitting panel 10 includes a circuit carrier 11 and a plurality of static self-light-emitting modules 12.

The circuit carrier 11 has a male tab 111 and a female tab 112, and two adjacent LED light emitting panels 10 are connected and conducted by the male tab 111 and the female tab 112.

Each of the static self-light emitting modules 12 includes a PCB 121 and a plurality of light emitting modules 122. The PCB 121 is disposed on the circuit carrier 11 and is electrically connected to the circuit carrier 11; the plurality of light emitting modules 122 are all arranged on the PCB 121 and are in conductive connection with the PCB 121, and each light emitting module 122 includes a bracket 1221, a driver IC1222, and a plurality of LEDs 1223; the bracket 1221 is disposed on the PCB 121, the bracket 1221 has an encapsulation space 101, the bracket 1221 is disposed with partitions 1224 to partition the encapsulation space 101 into a plurality of receiving cavities 1011, the driver IC1222 is disposed between the partitions 1224 and located in the encapsulation space 101, the driver IC1222 is not higher than the encapsulation space 101, the driver IC1222 is disposed on the bracket 1221 and conductively connected to the PCB 121, the LEDs 1223 are disposed on the bracket 1221 and located in the corresponding receiving cavities 1011, each LED1223 is conductively connected to the driver IC1222, the driver IC1222 and the LEDs 1223 are simultaneously encapsulated in the encapsulation space 101, and a risk that the driver IC1222 is exposed in air and easily broken down by static electricity is reduced.

In this embodiment, the light emitting module 122 is attached to the surface of the PCB 121, and has maintainability and controllability, so that the number of traces on the PCB 121 can be reduced, and the interference of the parasitic capacitance and the parasitic inductance of the circuit to the circuit can be reduced; the driving IC1222 is located at the center of the package space 101, the number of the partitions 1224 is four, the four partitions 1224 divide the package space 101 to form four receiving cavities 1011, correspondingly, the number of the LEDs 1223 is four, the LEDs are respectively located in the four receiving cavities 1011 to avoid light leakage, and the driving IC1222 is clamped between the four partitions 1224; the LEDs 1223 are full-color LEDs, the drive IC1222 controls R, G, B data of each full-color LED, and the selection of R, G, B signals is distinguished by data signals; and, a plurality of conductive traces 202 are provided in the holder 1221, and each LED1223 is electrically connected to the driver IC1222 via the corresponding conductive trace 202.

And, the number of the display modules 100 is four, and the display modules are arranged in two rows and spliced in two rows, and the number and the arrangement mode of the display modules 100 are not limited.

Detailed description the working principle of the present embodiment is as follows:

when in use, the pins of each static self-luminous module 12 in the product are arranged as shown in fig. 9 after being sealed, the pin number "0" is GND which is used for grounding, the pins "1" and "2" are Din0 and Din1 which are communication input end ports respectively, and the pin "3" is VR which is a red light power supply end; the internal block diagram of each static self-luminous module 12 in the product is shown in fig. 7, and in the working process, as shown in fig. 6, a clock and data are combined into one input, a clock signal is sent first, and then a data signal is sent; and comparing the data signal with the clock signal by taking the clock signal as a standard, and controlling the output of the duty ratio. The product has 2 input ports, wherein Din0 is a main input port, Din1 is a backup input port, and Din1 is connected with the output of the previous stage circuit, as shown in fig. 7, when a certain circuit cannot normally communicate due to a fault, the normal operation of the circuit connected in series thereafter is not affected.

The utility model discloses a design focus lies in: the product uses a plurality of static self-luminous modules, each luminous module of each static self-luminous module is internally provided with a driving IC, more than 80 percent of circuits are integrated into the module, the difficulty of design and circuit layout is greatly simplified, the driving IC and a plurality of LEDs are simultaneously packaged in a packaging space, reduces the risk that the driving IC is exposed in the air and is easy to be broken down by static electricity, reduces the routing on the PCB, thereby reducing the interference of the parasitic capacitance and the parasitic inductance of the circuit to the circuit, and simultaneously, each light-emitting module is an independent maintainable module, high maintainability, low cost and convenient use, and in addition, the product realizes the point-to-point control of the chip to the lamp tube by static control, the chromaticity and the brightness of each lamp can be controlled independently, the display effect is improved, and the influence on other lamp tubes caused by the damage of the lamp tubes of a conventional display screen is avoided, so that the display effect is influenced.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a LED display screen based on static self-luminous module which characterized in that: the LED display module is formed by splicing a plurality of display modules, each display module comprises a plurality of LED luminous panels, and each LED luminous panel comprises a circuit carrier plate and a plurality of static self-luminous modules; the circuit carrier plate is provided with a male head and a female seat, and two adjacent LED light-emitting plates are connected and conducted in a mutual insertion way through the male head and the female seat; each static self-luminous module comprises a PCB and a plurality of luminous modules; the PCB is arranged on the circuit carrier plate and is in conductive connection with the circuit carrier plate, the plurality of light-emitting modules are all arranged on the PCB and are in conductive connection with the PCB, and each light-emitting module comprises a bracket, a driving IC and a plurality of LEDs; the support is arranged on the PCB and provided with a packaging space, a partition board is arranged on the support to separate the packaging space into a plurality of accommodating cavities, the drive IC card is arranged between the partition boards and located in the packaging space, the drive IC is not higher than the packaging space, the drive IC is arranged on the support and is in conduction connection with the PCB, the LEDs are arranged on the support and are located in the corresponding accommodating cavities, each LED is in conduction connection with the drive IC, and the drive IC and the LEDs are packaged in the packaging space at the same time.

2. The LED display screen based on the static self-luminous module as claimed in claim 1, wherein: the driving IC is located in the center of the packaging space, the number of the partition plates is four, the packaging space is divided into four accommodating cavities by the four partition plates, correspondingly, the number of the LEDs is four, the LEDs are respectively located in the four accommodating cavities, and the driving IC card is arranged among the four partition plates.

3. The LED display screen based on the static self-luminous module as claimed in claim 1, wherein: the LEDs are full-color LEDs, and the driver IC controls R, G, B data for each full-color LED.

4. The LED display screen based on the static self-luminous module as claimed in claim 1, wherein: the luminous module is attached to the surface of the PCB.

5. The LED display screen based on the static self-luminous module as claimed in claim 1, wherein: a plurality of conductive circuits are arranged in the support, and each LED is connected with the drive IC in a conduction mode through the corresponding conductive circuit.

6. The LED display screen based on the static self-luminous module as claimed in claim 1, wherein: the display module is four, and it is two rows of two forms of arranging the concatenation.