CN201402572Y - All-color LED display device - Google Patents
All-color LED display device Download PDFInfo
- Publication number
- CN201402572Y CN201402572Y CN2009200393823U CN200920039382U CN201402572Y CN 201402572 Y CN201402572 Y CN 201402572Y CN 2009200393823 U CN2009200393823 U CN 2009200393823U CN 200920039382 U CN200920039382 U CN 200920039382U CN 201402572 Y CN201402572 Y CN 201402572Y
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Abstract
The utility model relates to electronic device technical field, in particular to an all-color LED display device which comprises a red LED chip, a green LED chip, a blue LED chip, four pins and a package body; the three LED chips are all packaged in the package body, the four pins all have respective patch based-island, each patch based-island has sheet structure; four patch based-islands are allpackaged and fixed in the package body; the surfaces and back surfaces of the three LED chips are provided with different electrodes, and the electrodes on the back surfaces have the same polarity, the back surfaces of the three LED chips are respectively adhered on the first patch based-island; the surfaces of the three LED chips are respectively and electrically connected with the second patch based-island, the third patch based-island and the fourth patch based-island through metal lead wires. The all-color LED display device not only has small volume, but also has high reliability; high speed SMD automatic assembly is realized during display module assembly process and the productivity is high.
Description
Technical field
The utility model relates to technical field of electronic devices, is specifically related to a kind of full-color LED display device.
Background technology
The display screen of being made up of LED in the life becomes the sign of urban information modernization construction as a kind of important means of information propagation at present.LED display is a kind of by the luminous display screen that shows of control semiconductor light-emitting diode chip, reduce each 1024 grades of gray scale of red, green, blue truly by effective control of systems such as computing machine and constitute 10.73 hundred million kinds of colors, in real time the abundant various information such as literal, animation, picture and image of display color.Existing three light-emitting diode chip for backlight unit producing full-color LED display device are installed on the support, the positive pole of three diodes needs to utilize metal lead wire to be electrically connected with shared pin respectively, the negative pole of three diodes is electrically connected with three pins by metal lead wire respectively, pin is plug-in type, this structure exists sealing wire more, the shortcoming of rosin joint is consolidated and produced to not prison welding easily, thereby production cost height, production efficiency is low, reliability of products is low, again because pin is plug-in type, thereby occupation space is big, shortcomings such as volume is big, and its display screen that is assembled into generally has pixel big, and resolution is low, if being used for the nearer display screen of angular distance in the make-up room situation of colour mixture poor effect will occur, aberration is particularly evident when watching.
Summary of the invention
It is little that the purpose of this utility model provides a kind of not only volume, and the high full-color LED display device of reliability.
In order to achieve the above object, the technical solution of the utility model is: a kind of full-color LED display device, comprise red light emitting diodes chip, green LED chip, blue led chips, first pin, second pin, the 3rd pin, the 4th pin and packaging body, described red light emitting diodes chip, green LED chip, blue led chips all are encapsulated in the packaging body, first pin, second pin, the 3rd pin, the 4th pin all have paster Ji Dao separately, and paster Ji Dao separately is schistose texture; The 3rd paster Ji Dao of the first paster Ji Dao of first pin, the second paster Ji Dao of second pin, the 3rd pin and the 4th paster Ji Dao of the 4th pin all encapsulate and are fixed in the packaging body; The surface of described red light emitting diodes chip, green LED chip and blue led chips is respectively different electrodes with the back side, and the back side is same polarity, and the back side of red light emitting diodes chip, green LED chip and blue led chips is mounted on respectively on the first paster Ji Dao; The surface of described red light emitting diodes chip, green LED chip and blue led chips is electrically connected with the second paster Ji Dao, the 3rd paster Ji Dao and the 4th paster Ji Dao by metal lead wire respectively.
The back side of described red light emitting diodes chip, green LED chip and blue led chips is negative pole.
The back side of described red light emitting diodes chip, green LED chip and blue led chips all is mounted on the first paster Ji Dao by the eutectic welding.
The back side of described red light emitting diodes chip, green LED chip and blue led chips is mounted on by conductive adhesive on the first paster Ji Dao.
Described red light emitting diodes chip, green LED chip and blue led chips are distributed on the first paster Ji Dao along straight line, and should equate with the distance of the dual-side of packaging body by the distribution straight line.
The close packaging body end of the extension of described first pin, second pin, the 3rd pin and the 4th pin all has bending, and the close external part place of extension all has bending, the back side of the external part of the extension of described first pin, second pin, the 3rd pin and the 4th pin is on same plane, and this same plane is positioned at the outside at the packaging body back side.
The straight line that described red light emitting diodes chip, green LED chip and blue led chips are distributed parallels with the direction of stretching out of first pin.
The described first paster Ji Dao is between the 3rd paster Ji Dao and the 4th paster base island, the second paster Ji Dao and the 3rd paster Ji Dao are positioned at the same side of the first paster Ji Dao, the direction of stretching out of first pin and second pin parallels, the direction of stretching out of the 3rd pin and the 4th pin parallels, second pin and the 3rd pin to stretch out direction opposite.
Described packaging body adopts transparent thermosetting epoxy resin.
The good effect that the utility model had is: because described four pins all have paster Ji Dao separately, and paster Ji Dao separately is schistose texture, the light-emitting diode chip for backlight unit of three different colours the back side be mounted on respectively on the first paster Ji Dao of first pin, and the back side of three light-emitting diode chip for backlight unit is same polarity, the surface of described three light-emitting diode chip for backlight unit respectively with the second paster Ji Dao, the 3rd paster Ji Dao and the 4th paster Ji Dao are electrically connected by metal lead wire, described three light-emitting diode chip for backlight unit and four pin paster Ji Dao separately all are encapsulated in the packaging body, metal lead wire and pad have been reduced, it is solid or produce the occurrence probability of rosin joint to have reduced not prison welding, thereby not only small product size is little, and the reliability height; Because after the volume of product was little, the pixel cell that unit area is held when the assembling display screen was more closeer, thereby can reduce dot spacing greatly and improve picture element density, thereby had effectively improved image resolution ratio; Because the back side of described three diodes is negative pole, thereby more helps guaranteeing the security of circuit, makes the components and parts in the circuit not fragile; Because described three light-emitting diode chip for backlight unit are distributed on the first paster Ji Dao along straight line, this distribution straight line equates with the distance of the dual-side of packaging body, and the first paster Ji Dao is between the 3rd paster Ji Dao and the 4th paster base island, thereby can improve the luminous homogeneity of product and the aberration when reducing to watch; Because the close packaging body end of the extension of described first pin, second pin, the 3rd pin and the 4th pin all has bending, and the close external part place of extension all has bending, the back side of the external part of the extension of four pins is on same plane, and this same plane is positioned at the outside at the packaging body back side, thereby when the assembling display module, can realize the high-speed automated assembling of SMD, the production efficiency height is fit to produce in enormous quantities.
Description of drawings
Fig. 1 is the structural representation that the utility model full-color LED display device is cut packaging body open;
Fig. 2 is along the cross-sectional schematic of A-A direction among Fig. 1;
Fig. 3 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with the embodiment that accompanying drawing provides, the utility model is described in further detail.
Referring to Fig. 1,2, shown in 3, a kind of full-color LED display device, comprise red light emitting diodes chip 1, green LED chip 2, blue led chips 3, first pin 4, second pin 5, the 3rd pin 6, the 4th pin 7 and packaging body 8, described red light emitting diodes chip 1, green LED chip 2, blue led chips 3 all is encapsulated in the packaging body 8, first pin 4, second pin 5, the 3rd pin 6, the 4th pin 7 all has paster base island 4-1 separately, 5-1,6-1,7-1, and paster base island 4-1 separately, 5-1,6-1,7-1 is schistose texture; The 3rd paster base island 6-1 of the first paster base island 4-1 of first pin 4, the second paster base island 5-1 of second pin 5, the 3rd pin 6 and the 4th paster base island 7-1 of the 4th pin 7 all encapsulate and are fixed in the packaging body 8; The surface of described red light emitting diodes chip 1, green LED chip 2 and blue led chips 3 is respectively different electrodes with the back side, and the back side is same polarity, and the back side of red light emitting diodes chip 1, green LED chip 2 and blue led chips 3 is mounted on respectively on the first paster base island 4-1; The surface of described red light emitting diodes chip 1, green LED chip 2 and blue led chips 3 is electrically connected with the second paster base island 5-1, the 3rd paster base island 6-1 and the 4th paster base island 7-1 by metal lead wire respectively.
Shown in Fig. 1,3, in order more to help guaranteeing the security of circuit, make the components and parts in the circuit not fragile, the back side of described red light emitting diodes chip 1, green LED chip 2 and blue led chips 3 is negative pole.
Shown in Fig. 1,2, reach good Ohmic contact when mounting for the back side that guarantees diode chip for backlight unit and pairing paster Ji Dao, the back side of described red light emitting diodes chip 1, green LED chip 2 and blue led chips 3 all is mounted on the first paster base island 4-1 by the eutectic welding.The back side of described red light emitting diodes chip 1, green LED chip 2 and blue led chips 3 is mounted on by conductive adhesive on the first paster base island 4-1.
Shown in Fig. 1,2, in order to improve the luminous homogeneity of product and aberration when reducing to watch, described red light emitting diodes chip 1, green LED chip 2 and blue led chips 3 are distributed on the first paster base island 4-1 along straight line, and should equate with the distance of the dual-side of packaging body 8 by the distribution straight line.
Referring to shown in Figure 2, in order to realize the high-speed automated assembling of SMD and to improve efficiency of assembling, close packaging body 8 ends of the extension of described first pin 4, second pin 5, the 3rd pin 6 and the 4th pin 7 all have bending, and the close external part place of extension all has bending, the back side of the external part of the extension of described first pin 4, second pin 5, the 3rd pin 6 and the 4th pin 7 is on same plane, and this same plane is positioned at the outside at packaging body 8 back sides.Promptly the outside at this same plane and packaging body 8 back sides has the discrepancy in elevation of δ in Fig. 2.
Referring to shown in Figure 1, in order to improve the luminous homogeneity of product, the straight line that described red light emitting diodes chip 1, green LED chip 2 and blue led chips 3 are distributed parallels with the direction of stretching out of first pin 4.The described first paster base island 4-1 is between the 3rd paster base island 6-1 and the 4th paster base island 7-1, the second paster base island 5-1 and the 3rd paster base island 6-1 are positioned at the same side of the first paster base island 4-1, the direction of stretching out of first pin 4 and second pin 5 parallels, the direction of stretching out of the 3rd pin 6 and the 4th pin 7 parallels, second pin 5 and the 3rd pin 6 to stretch out direction opposite.
Shown in Fig. 1,2, in order to guarantee can to show multiple color and improve light extraction efficiency in packaging body, described packaging body 8 adopts transparent thermosetting epoxy resin.
Referring to shown in Figure 3, the utility model in use, the anodal V1 end (being the 4th pin 7 among Fig. 1) of red light emitting diodes chip 1, the anodal V2 end (being the 3rd pin 6 among Fig. 1) of green LED chip 2 and the anodal V3 end (being second pin 5 among Fig. 1) of blue led chips 3 are electrically connected with the positive terminal of circuit respectively, the negative pole end of red light emitting diodes chip 1, the negative pole end of the negative pole end of green LED chip 2 and blue led chips 3 all is electrically connected with common port V4 (being first pin 4 among Fig. 1), and common port V4 is electrically connected with the negative pole end of circuit.
Claims (10)
1, a kind of full-color LED display device, comprise red light emitting diodes chip (1), green LED chip (2), blue led chips (3), first pin (4), second pin (5), the 3rd pin (6), the 4th pin (7) and packaging body (8), described red light emitting diodes chip (1), green LED chip (2), blue led chips (3) all are encapsulated in the packaging body (8), it is characterized in that:
A, first pin (4), second pin (5), the 3rd pin (6), the 4th pin (7) all have paster Ji Dao (4-1,5-1,6-1,7-1) separately, and paster Ji Dao separately (4-1,5-1,6-1,7-1) is schistose texture;
The 3rd paster Ji Dao (6-1) of the first paster Ji Dao (4-1) of b, first pin (4), the second paster Ji Dao (5-1) of second pin (5), the 3rd pin (6) and the 4th paster Ji Dao (7-1) of the 4th pin (7) all encapsulate and are fixed in the packaging body (8);
The surface of c, described red light emitting diodes chip (1), green LED chip (2) and blue led chips (3) is respectively different electrodes with the back side, and the back side is same polarity, and the back side of red light emitting diodes chip (1), green LED chip (2) and blue led chips (3) is mounted on respectively on the first paster Ji Dao (4-1);
The surface of d, described red light emitting diodes chip (1), green LED chip (2) and blue led chips (3) is electrically connected with the second paster Ji Dao (5-1), the 3rd paster Ji Dao (6-1) and the 4th paster Ji Dao (7-1) by metal lead wire respectively.
2, full-color LED display device according to claim 1 is characterized in that: the back side of described red light emitting diodes chip (1), green LED chip (2) and blue led chips (3) is negative pole.
3, full-color LED display device according to claim 1 is characterized in that: the back side of described red light emitting diodes chip (1), green LED chip (2) and blue led chips (3) all is mounted on the first paster Ji Dao (4-1) by the eutectic welding.
4, full-color LED display device according to claim 1 is characterized in that: the back side of described red light emitting diodes chip (1), green LED chip (2) and blue led chips (3) is mounted on by conductive adhesive on the first paster Ji Dao (4-1).
5, full-color LED display device according to claim 1, it is characterized in that: described red light emitting diodes chip (1), green LED chip (2) and blue led chips (3) are distributed on the first paster Ji Dao (4-1) along straight line, and should equate with the distance of the dual-side of packaging body (8) by the distribution straight line.
6, full-color LED display device according to claim 1, it is characterized in that: close packaging body (8) end of the extension of described first pin (4), second pin (5), the 3rd pin (6) and the 4th pin (7) all has bending, and the close external part place of extension all has bending, the back side of the external part of the extension of described first pin (4), second pin (5), the 3rd pin (6) and the 4th pin (7) is on same plane, and this same plane is positioned at the outside at packaging body (8) back side.
7, full-color LED display device according to claim 5 is characterized in that: the straight line that described red light emitting diodes chip (1), green LED chip (2) and blue led chips (3) are distributed parallels with the direction of stretching out of first pin (4).
8, according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 described full-color LED display devices, it is characterized in that: the described first paster Ji Dao (4-1) is positioned between the 3rd paster Ji Dao (6-1) and the 4th paster Ji Dao (7-1), the second paster Ji Dao (5-1) and the 3rd paster Ji Dao (6-1) are positioned at the same side of the first paster Ji Dao (4-1), the direction of stretching out of first pin (4) and second pin (5) parallels, the direction of stretching out of the 3rd pin (6) and the 4th pin (7) parallels, second pin (5) and the 3rd pin (6) to stretch out direction opposite.
9, according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 described full-color LED display devices, it is characterized in that: described packaging body (8) adopts transparent thermosetting epoxy resin.
10, full-color LED display device according to claim 8 is characterized in that: described packaging body (8) adopts transparent thermosetting epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200393823U CN201402572Y (en) | 2009-05-08 | 2009-05-08 | All-color LED display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200393823U CN201402572Y (en) | 2009-05-08 | 2009-05-08 | All-color LED display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201402572Y true CN201402572Y (en) | 2010-02-10 |
Family
ID=41662371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200393823U Expired - Lifetime CN201402572Y (en) | 2009-05-08 | 2009-05-08 | All-color LED display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201402572Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012151723A1 (en) * | 2011-05-10 | 2012-11-15 | 湖南创图视维科技有限公司 | Naked-eye 3d tv wall |
| CN109509745A (en) * | 2018-12-28 | 2019-03-22 | 捷捷半导体有限公司 | One kind being used for the low receiving photocell-array of Gfast |
-
2009
- 2009-05-08 CN CN2009200393823U patent/CN201402572Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012151723A1 (en) * | 2011-05-10 | 2012-11-15 | 湖南创图视维科技有限公司 | Naked-eye 3d tv wall |
| CN109509745A (en) * | 2018-12-28 | 2019-03-22 | 捷捷半导体有限公司 | One kind being used for the low receiving photocell-array of Gfast |
| CN109509745B (en) * | 2018-12-28 | 2023-09-22 | 捷捷半导体有限公司 | Low-capacity discharge tube array for G.fast |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100210 Effective date of abandoning: 20090508 |