CN207637439U - A kind of LED display based on COB technologies - Google Patents
A kind of LED display based on COB technologies Download PDFInfo
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- CN207637439U CN207637439U CN201721592575.2U CN201721592575U CN207637439U CN 207637439 U CN207637439 U CN 207637439U CN 201721592575 U CN201721592575 U CN 201721592575U CN 207637439 U CN207637439 U CN 207637439U
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Abstract
The utility model discloses a kind of LED displays based on COB technologies, it is made of LED circuit board, drive circuit board and driving IC electronic components, LED circuit board by multiple unit LEDs circuit board groups being arranged in order at, LED circuit board is made of pcb board and multiple COB chip units arranged in arrays, COB chip units are arranged on pcb board, COB chip units include three LED chips, and three is respectively used to send out feux rouges, green light and blue light, the pad distribution of unit LEDs circuit board is corresponded with the pad distribution of drive circuit board；The holder concept of traditional SMD devices is eliminated with COB technologies reduces material and equipment cost, compare SMT technologies reduce welding points reduce management and control difficulty；With SMT technologies by conventional multilayer circuit board disassembling be two multilayer circuit boards, design difficulty reduce, manufacture craft is simple, and cost also decreases.
Description
Technical field
A kind of LED display based on COB technologies of the utility model, belongs to LED display technical field.
Background technology
LED display is a kind of display mode by controlling semiconductor LED lamp, is by tens of thousands of, hundreds of thousands, even hundreds of
Ten thousand or more the evenly distributed compositions of semiconductor LED lamp pixel, it can manufacture the LED of different color using different materials
Pixel, to show the display screen of the various information such as word, figure, image, animation, video, video signal.
LED display production at present is based on SMT and COB technologies.SMT technologies are surface mounting technologies, and SMT technologies make
Display screen is to weld the pin of multiple discrete SMD devices and the pad in traditional PCB face with tin cream, forms the light of LED applications
There is the problem of point light, dazzle and ghost image in source component, such way, when the display smaller and smaller pixel density of spacing is increasing
When its current densities increases, welding points will greatly increase and process for manufacturing circuit board is complicated, the thing followed is that circuit is set
Count difficulty increase, quality management and control difficulty increases and material cost is higher；It is that luminous wafer is direct that COB technologies, which make display screen,
It is encapsulated to pcb board, is compared for SMT technologies with conducting resinl and insulating cement, welding points greatly reduce, and are led because of welding
The fraction defective of cause is greatly reduced, and has a clear superiority in terms of efficiency, cost and reliability, and COB encapsulation subtracts due to being integrated form encapsulation
Go out the loss of anaclasis less, have pharosage high, dazzle is few, and shine the characteristics such as uniform, but when display spacing is smaller and smaller
When pixel density is increasing, single display module cost sharply increases, and will appear one since its failpoint is difficult to repair
The problem of pixel damage causes entire display module that can not use, the quality requirements of pixel can increase compared with SMT technologies.
It is realizing small space distance LED display screen manufacture view, is selecting lamp to drive separated structure, the layout area of pcb board can be increased,
Display effect conducive to heat dissipation without influencing LED, and it is easy repair.
Utility model content
The utility model overcomes the shortcomings of the prior art, provides a kind of LED display based on COB technologies,
The utility model drives separated structure with lamp reduces the design difficulty of minimum interval circuit plate, and is easy repair.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of LED based on COB technologies
Display screen is made of LED circuit board, drive circuit board and driving IC electronic components, and LED circuit board setting is driving
Circuit board upper surface, the driving IC electronic components are arranged in the lower surface of drive circuit board, the LED circuit board by
Multiple unit LEDs circuit board groups being arranged in order are at the LED circuit board is by pcb board and multiple COB cores arranged in arrays
Blade unit forms, and the COB chip units are arranged on pcb board, and the COB chip units include three LED chips,
And three is respectively used to send out feux rouges, green light and blue light, pad distribution and the drive circuit board of the unit LEDs circuit board
Pad distribution corresponds.
The utility model has an advantageous effect in that compared with prior art：
（1）The utility model becomes minimum display unit using encapsulation redgreenblue chip, eliminates traditional SMD devices
Holder concept reduce material and equipment cost, compare SMT technologies reduce welding points, reduce quality management and control difficulty.
（2）The utility model selects lamp to drive separated structure, and one multilayer circuit board of tradition is decomposed into two multilayer circuits
Plate can increase the layout area of pcb board, be conducive to display effect of the heat dissipation without influencing LED, it is aobvious to be advantageously implemented small spacing LED
Display screen manufactures, and is easy repair, and design difficulty reduces, and manufacture craft is simple, and cost also decreases.
（3）LED circuit board described in the utility model is by multiple unit LEDs circuit board groups at opposite conventional method subtracts significantly
Lacked attachment number, while a variety of assembling modes can be taken, be suitable for a variety of actual service conditions, be easily installed, dismantle and
Maintenance management.
（4）There is electrical connection in the utility model unit LEDs circuit board positive and negative, connected on one side with drive circuit board, one
Face can encapsulate a variety of electronic components, meet various functions and module demand.
Description of the drawings
Fig. 1 is the LED display front schematic view of the utility model.
Fig. 2 is the schematic cross-section of the LED display of the utility model.
Fig. 3 is the unit LEDs circuit board front schematic view of the utility model LED display.
In figure：1 is LED circuit board, and 2 be drive circuit board, and 3 be driving IC electronic components, and 11 be unit LEDs circuit
Plate, 111 are pcb board, and 112 be COB chip units.
Specific implementation mode
The following describes the utility model in further detail with reference to the accompanying drawings.
As shown in Figs. 1-3, a kind of LED display based on COB technologies, by LED circuit board 1, drive circuit board 2 and driving
IC electronic components 3 form, and LED circuit board 1 is mounted on 2 upper surface of drive circuit board by SMT technologies, drive IC electronics member devices
Part 3 is arranged in the lower surface of drive circuit board 2, and LED circuit board 1 is made of multiple unit LEDs circuit boards 11 being arranged in order,
Unit LEDs circuit board 11 is made of pcb board 111 and multiple COB chip units 112 arranged in arrays, COB chip units 112
Be arranged on pcb board 111, COB chip units 112 include three LED chips, and three be respectively used to send out feux rouges, green light and
Blue light, the pad distribution of the unit LEDs circuit board 11 are corresponded with the pad distribution of drive circuit board 2, and every red green
Blue chip positive and negative anodes are connected to by being electrically connected with unit LEDs back of circuit board pad；The specification of unit LEDs circuit board 11 is
10-90mm×10-90mm。
The utility model is explained in detail above in conjunction with embodiment, but the utility model is not limited to above-mentioned implementation
Example, within the knowledge of a person skilled in the art, can also be in the premise for not departing from the utility model aims
It is lower that various changes can be made.
Claims (1)
1. a kind of LED display based on COB technologies, by LED circuit board（1）, drive circuit board（2）With driving IC electronics member devices
Part（3）Composition, the LED circuit board（1）It is arranged in drive circuit board（2）Upper surface, the driving IC electronic components
（3）It is arranged in drive circuit board（2）Lower surface, it is characterised in that：The LED circuit board（1）It is arranged in order by multiple
Unit LEDs circuit board（11）Composition, the unit LEDs circuit board（11）By pcb board（111）With it is multiple arranged in arrays
COB chip units（112）Composition, the COB chip units（112）It is arranged in pcb board（111）On, the COB chip lists
Member（112）Including three LED chips, and three is respectively used to send out feux rouges, green light and blue light, the unit LEDs circuit board
（11）Pad distribution and drive circuit board（2）Pad distribution correspond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721592575.2U CN207637439U (en) | 2017-11-24 | 2017-11-24 | A kind of LED display based on COB technologies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721592575.2U CN207637439U (en) | 2017-11-24 | 2017-11-24 | A kind of LED display based on COB technologies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207637439U true CN207637439U (en) | 2018-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721592575.2U Active CN207637439U (en) | 2017-11-24 | 2017-11-24 | A kind of LED display based on COB technologies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207637439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107633779A (en) * | 2017-11-24 | 2018-01-26 | 山西高科华烨电子集团有限公司 | LED display based on COB technologies |
-
2017
- 2017-11-24 CN CN201721592575.2U patent/CN207637439U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107633779A (en) * | 2017-11-24 | 2018-01-26 | 山西高科华烨电子集团有限公司 | LED display based on COB technologies |
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