CN204463727U - Led display module - Google Patents
Led display module Download PDFInfo
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- CN204463727U CN204463727U CN201520055009.2U CN201520055009U CN204463727U CN 204463727 U CN204463727 U CN 204463727U CN 201520055009 U CN201520055009 U CN 201520055009U CN 204463727 U CN204463727 U CN 204463727U
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- copper cash
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- weld pad
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Abstract
The utility model discloses a kind of LED display module, comprise and organize LED, a PCB substrate, a LED drive chip more; The N number of LED often organizing LED forms a LED pixel cell; PCB substrate front is provided with the capable horizontal copper cash of M, the perpendicular copper cash of N*K row, and be provided with driving chip weld pad in the middle part of the back side, both sides, the back side are provided with power supply and control signal weld pad; Each leg of driving chip weld pad is respectively with power supply and control signal weld pad, horizontal copper cash, the electrical connection of perpendicular copper cash correspondence; LED drive chip is welded in driving chip weld pad by surface mounting technology; LED in same group of LED, one end is erected copper cash with corresponding one group respectively and is electrically connected by metal wire, and the other end is electrically connected with the horizontal copper cash of same a line.LED display module of the present utility model, can improve the picture element density of display screen, promotes LED display image display quality, reduces port number of welds, reduces production cost.
Description
Technical field
The utility model relates to LED (light emitting diode) display technique, particularly a kind of LED display module.
Background technology
LED (light emitting diode, light emitting diode) have that volume is little, efficiency is high, reaction is fast, color stable, the life-span is long, energy consumption is little, the advantage such as easy to control, LED display is the flat panel matrix display utilizing light emitting diode (LED) to make as luminophor, LED display has that brightness is high, photoelectric transformation efficiency is high, fast response time, driving voltage are low, long service life, be easy to computer interface, characteristic, the large I of screen is seamless spliced on demand.LED shows product can be widely used in traffic, advertisement, news, physical culture, finance, stage, security, at commercial field, and the media that each market all can adopt LED display to guide as commercial advertisement and client.
Usually, one piece of large LED display is spliced by multiple LED display module.The typical LED display module of existing one as shown in Figure 1, module frames 1 has round hole 2, for placing LED pixel cell.As shown in Figure 2, LED pixel cell connects power lead and signal wire by pin 3.
LED pixel cell, usually several mode such as 2R1G, 2R1G1B, 1R1G1B is had, 2R1G refers to that a pixel cell has 2 red colored lamp and 1 green light, 2R1G1B refers to that a pixel cell has 2 red colored lamp, 1 green light and 1 blue lamp, and 1R1G1B refers to that a pixel cell has 1 red colored lamp, 1 green light and 1 blue lamp.
LED display, has multiple LED display module to combine formation.Existing LED display module, mainly will organize SMD ((surface mounted device more, surface mounting devices) LED that encapsulates and LED drive chip, by SMT (Surface Mounted Technology, surface mounting technology), be fixed on PCB (Printed CircuitBoard), printed circuit board) on substrate, thus being assembled into LED display module, one group of LED forms a LED pixel cell.
Existing LED display module, picture element density is low, and cost is high.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of LED display module, can improve the picture element density of display screen, promotes LED display image display quality, reduces port number of welds, reduces production cost.
For solving the problems of the technologies described above, the LED display module that the utility model provides, comprises and organizes LED, a PCB substrate, a LED drive chip more;
Often organize LED, comprise N number of LED, form a LED pixel cell;
Described PCB substrate, front is provided with the capable horizontal copper cash of M, the perpendicular copper cash of N*K row, and the perpendicular copper cash of every N row is one group; M, N, K are positive integer; Be provided with driving chip weld pad in the middle part of the back side, both sides, the back side are provided with power supply and control signal weld pad;
Each leg of described driving chip weld pad, respectively with power supply and control signal weld pad, the capable horizontal copper cash of M, the electrical connection of N*K row perpendicular copper cash correspondence;
LED drive chip, is welded in described driving chip weld pad by surface mounting technology, and puts rubber seal dress;
N number of LED in same group of LED, one end erects copper cash respectively N with corresponding one group are arranged perpendicular copper cash and are electrically connected by metal wire, and the other end is electrically connected with the horizontal copper cash of same a line;
Same group of LED, some transparent adhesive tape is encapsulated as a LED pixel cell.
Preferably, one end of the N number of LED in same group of LED, one of them LED is erected one in copper cash and is arranged perpendicular copper cash with corresponding one group and be electrically connected by metal wire, and the other end and the horizontal copper cash of a line are welded by surface mounting technology and be electrically connected; The other N-1 that one end and this corresponding group of all the other N-1 LED erect copper cash arranges perpendicular copper cash and is electrically connected respectively by metal wire, and the other end is electrically connected by metal wire with the horizontal copper cash of this row.
Preferably, N is 3, often organizes LED and comprises three LED, be respectively a red LED, blue led, a green LED.
Preferably, N is 4, often organizes LED and comprises four LED, be respectively two red LED, blue led, a green LED.
Preferably, described LED display module, comprises 8*16,8*8 or 16*32 group LED.
Preferably, described LED drive chip, is integrated with constant current driver circuit for LED, the decoding of row power supply controls driving circuit, ghost eliminates circuit and decoder driver circuit.
Preferably, described metal wire is gold thread.
Preferably, between adjacent sets LED, be provided with grid, described grid is light tight.
LED display module of the present utility model, LED pixel that a module integratedly a lot (can reach up to a hundred), integrated a lot of LED pixels are by the fully integrated driving chip unified driving of module backside, a lot of LED pixel and LED drive chip are packaged together by the mode of die bond routing, substantially increase integrated level, the picture element density of display screen can be improved, promote LED display image display quality, reduce port number of welds, reduce production cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical solution of the utility model, below the accompanying drawing used required for the utility model is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is existing a kind of LED display module front schematic view;
Fig. 2 is existing a kind of LED display module side schematic view;
Fig. 3 is LED display module one embodiment side schematic view of the present invention;
Fig. 4 is LED display module one embodiment schematic rear view of the present invention;
Fig. 5 is LED display module one embodiment front schematic view of the present invention;
Fig. 6 is LED display module one embodiment front of the present invention partial schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, carry out clear, complete description to the technical scheme in the utility model, obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of the utility model protection.
Embodiment one
LED display module, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, comprises and organizes LED, PCB substrate 1, LED drive chip 3 more;
Often organize LED, comprise N number of LED, form a LED pixel cell 2;
Described PCB substrate 1, front is provided with the capable horizontal copper cash 11 of M, the perpendicular copper cash 12 of N*K row, and the perpendicular copper cash of every N row is one group; M, N, K are positive integer; Be provided with driving chip weld pad in the middle part of the back side, both sides, the back side are provided with power supply and control signal weld pad 13;
Each leg of described driving chip weld pad, respectively with power supply and control signal weld pad 13, the capable horizontal copper cash 11 of M, the electrical connection of N*K row perpendicular copper cash 12 correspondence;
LED drive chip 3, is welded in described driving chip weld pad by SMT (Surface Mounted Technology, surface mounting technology), and puts rubber seal dress;
N number of LED in same group of LED, one end erects copper cash respectively N with corresponding one group are arranged perpendicular copper cash and are electrically connected by metal wire 4, and the other end is electrically connected with the horizontal copper cash of same a line;
Same group of LED, some transparent adhesive tape is encapsulated as a LED pixel cell 2.
Preferably, N number of LED in same group of LED, one end of one of them LED is erected one in copper cash and is arranged perpendicular copper cash with corresponding one group and be electrically connected by metal wire 4, the other end and the horizontal copper cash of a line are welded by SMT (Surface MountedTechnology, surface mounting technology) and are electrically connected; The other N-1 that one end and this corresponding group of all the other N-1 LED erect copper cash arranges perpendicular copper cash and is electrically connected respectively by metal wire 4, and the other end is electrically connected by metal wire 4 with the horizontal copper cash of this row.
Preferably, N is 3, often organizes LED, comprises three LED, is respectively a red LED, blue led, a green LED.
Preferably, N is, 4, and often organize LED, comprise four LED, be respectively two red LED, blue led, a green LED.
Preferably, described LED display module, comprises 8*16,8*8 or 16*32 group LED.
Preferably, described LED drive chip 3, is integrated with constant current driver circuit for LED, the decoding of row power supply controls driving circuit, ghost eliminates circuit and decoder driver circuit.
Preferably, described metal wire 4 is gold (AU) line.
The LED display module of embodiment one, LED pixel that a module integratedly a lot (can reach up to a hundred), integrated a lot of LED pixels are by the fully integrated driving chip unified driving of module backside, a lot of LED pixel and LED drive chip are packaged together by the mode of die bond routing, substantially increase integrated level, the picture element density of display screen can be improved, promote LED display image display quality, reduce port number of welds, reduce production cost.
Embodiment two
Based on the LED display module of embodiment one, between adjacent sets LED, be provided with grid, described grid is light tight.
The LED display module of embodiment two, the grid arranged between adjacent sets LED, can prevent light between LED pixel from interfering with each other.
Embodiment three
The LED display module of embodiment one, embodiment two, utilize COB (chip on board encapsulation) fabrication techniques, process is as follows:
Step one. LED drive chip die bond and routing are carried out to PCB substrate, makes LED drive chip and PCB substrate complete electrical connection, after test passes, carry out a rubber seal dress;
Step 2. LED die bond and routing are carried out to the PCB substrate of having been tested by step one, each LED and PCB substrate is made to complete electrical connection, a rubber seal dress is carried out after test passes, thus realize utilizing PCB substrate that LED drive chip and LED are carried out electric interconnection, form a display module.
Or, LED display module, utilize COB (chip on board encapsulation) fabrication techniques, process is as follows:
Step one. LED die bond and routing are carried out to PCB substrate, makes each LED and PCB substrate complete electrical connection, after test passes, carry out a rubber seal dress;
Step 2. LED drive chip die bond and routing are carried out to the PCB substrate of having been tested by step one, LED drive chip and PCB substrate is made to complete electrical connection, a rubber seal dress is carried out after test passes, thus realize utilizing PCB substrate that LED drive chip and LED are carried out electric interconnection, form a display module.
The LED display module method for making of embodiment three, improves original assembling mode, can improve LED display module picture element density, reduce costs.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the utility model protects.
Claims (8)
1. a LED display module, is characterized in that, comprises and organizes LED, a PCB substrate, a LED drive chip more;
Often organize LED, comprise N number of LED, form a LED pixel cell;
Described PCB substrate, front is provided with the capable horizontal copper cash of M, the perpendicular copper cash of N*K row, and the perpendicular copper cash of every N row is one group; M, N, K are positive integer; Be provided with driving chip weld pad in the middle part of the back side, both sides, the back side are provided with power supply and control signal weld pad;
Each leg of described driving chip weld pad, respectively with power supply and control signal weld pad, the capable horizontal copper cash of M, the electrical connection of N*K row perpendicular copper cash correspondence;
LED drive chip, is welded in described driving chip weld pad by surface mounting technology, and puts rubber seal dress;
N number of LED in same group of LED, one end erects copper cash respectively N with corresponding one group are arranged perpendicular copper cash and are electrically connected by metal wire, and the other end is electrically connected with the horizontal copper cash of same a line;
Same group of LED, some transparent adhesive tape is encapsulated as a LED pixel cell.
2. LED display module according to claim 1, is characterized in that,
One end of N number of LED in same group of LED, one of them LED is erected one in copper cash and is arranged perpendicular copper cash with corresponding one group and be electrically connected by metal wire, and the other end and the horizontal copper cash of a line are welded by surface mounting technology and be electrically connected; The other N-1 that one end and this corresponding group of all the other N-1 LED erect copper cash arranges perpendicular copper cash and is electrically connected respectively by metal wire, and the other end is electrically connected by metal wire with the horizontal copper cash of this row.
3. LED display module according to claim 1, is characterized in that,
N is 3, often organizes LED and comprises three LED, be respectively a red LED, blue led, a green LED.
4. LED display module according to claim 1, is characterized in that,
N is 4, often organizes LED and comprises four LED, be respectively two red LED, blue led, a green LED.
5. LED display module according to claim 1, is characterized in that,
Described LED display module, comprises 8*16,8*8 or 16*32 group LED.
6. LED display module according to claim 1, is characterized in that,
Described LED drive chip, is integrated with constant current driver circuit for LED, the decoding of row power supply controls driving circuit, ghost eliminates circuit and decoder driver circuit.
7. LED display module according to claim 1, is characterized in that,
Described metal wire is gold thread.
8. LED display module according to claim 1, is characterized in that,
Between adjacent sets LED, be provided with grid, described grid is light tight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520055009.2U CN204463727U (en) | 2015-01-27 | 2015-01-27 | Led display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520055009.2U CN204463727U (en) | 2015-01-27 | 2015-01-27 | Led display module |
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| CN204463727U true CN204463727U (en) | 2015-07-08 |
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| CN201520055009.2U Active CN204463727U (en) | 2015-01-27 | 2015-01-27 | Led display module |
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Cited By (3)
| 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 |
| WO2023103028A1 (en) * | 2021-12-09 | 2023-06-15 | 武汉华星光电半导体显示技术有限公司 | Tiled screen |
| CN116884341A (en) * | 2023-09-06 | 2023-10-13 | 长春希达电子技术有限公司 | Wall-mounted LED display device and method |
-
2015
- 2015-01-27 CN CN201520055009.2U patent/CN204463727U/en active Active
Cited By (4)
| 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 |
| WO2023103028A1 (en) * | 2021-12-09 | 2023-06-15 | 武汉华星光电半导体显示技术有限公司 | Tiled screen |
| CN116884341A (en) * | 2023-09-06 | 2023-10-13 | 长春希达电子技术有限公司 | Wall-mounted LED display device and method |
| CN116884341B (en) * | 2023-09-06 | 2024-01-05 | 长春希达电子技术有限公司 | Wall-mounted LED display device and method |
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