CN101640012A - LED display module - Google Patents
LED display module Download PDFInfo
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- CN101640012A CN101640012A CN200910092022A CN200910092022A CN101640012A CN 101640012 A CN101640012 A CN 101640012A CN 200910092022 A CN200910092022 A CN 200910092022A CN 200910092022 A CN200910092022 A CN 200910092022A CN 101640012 A CN101640012 A CN 101640012A
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- led
- display module
- pcb board
- lamp plate
- led lamp
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Abstract
The invention discloses an LED display module, comprising a control board and at least one LED lamp panel, wherein, the control board comprises a first PCB and a control circuit, and the control circuit is used for providing control signal to the LED lamp panel by the first PCB; and the LED lamp panel comprises a second PCB, a column drive circuit and LED pixel points, the LED pixel points are arranged on the front face of the second PCB, and the column drive circuit is arranged on the rear face of the second PCB for receiving the control signal and driving the LED pixel points to illuminate according to the control signal. The LED display module greatly reduces signal transmission connecting points between the control board and the LED lamp panel, improves stability and reliability of signal transmission, solves the problem of heat dissipation of the whole LED display module structure, saves PCB materials and reduces the weight of the whole LED display module.
Description
Technical field
The present invention relates to LED and show field, in particular a kind of LED display module.
Background technology
LED display module row, column driving circuit all designs on control panel at present, and the LED display module is connected together by row's cushion by control panel and the lattice luminous module of a plurality of LED, and row's pin plays fixing and transmission signals effect simultaneously.
Be illustrated in figure 1 as the structural representation of the central LED display module of prior art, the LED lamp is arranged in array format and forms the LED lamp plate on the pcb board, the LED lamp is connected with chip for driving on the control panel by row's pin, because each single lamp (static state) or each row lamp (scanning) all need a row control signal on the lattice luminous module of LED, the horizontal-drive signal that every in addition row needs, so the lattice luminous module of LED need use more row's pin to be connected with control panel.
The tri coloured lantern plate of sweeping with 8 * 8 pixels 4 is an example, because each row lamp all needs a control signal on the lamp plate, therefore control panel need be to LED lamp plate transmission (8 * 8 * 3) ÷ 4=48 column signal, the row drive part transmits 48 signals altogether, means that just listing the drive part control panel need provide 48 row's pins for the transmission column signal to the LED lamp plate.
In addition, owing to connect the column drive circuit that the column signal of LED lamp negative pole is all taken from control panel, so the variation of lamp number of spots directly has influence on the tie point quantity of control panel and LED lamp plate on the LED lamp plate, and the two is directly proportional, and lamp point is many more, and connection is counted many more;
In addition, the structure adaptation of LED display module as shown in Figure 1 is bigger, and promptly as can be seen from Figure 1, the display module of prior art exists densely arranged row's pin and lamp point, and this structure obviously is unfavorable for heat radiation.
Prior art is owing to tie point between control panel and the LED lamp plate is more, reduce greatly signal transmission stability and reliability, be not easy to the hardware connection mode of flexible processing controls plate and LED lamp plate, row's pin welding manner that it adopts comes difficulty for the production processing belt, and maintenance, the detection dismantlement work in later stage are brought great difficulty.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
Technical matters to be solved by this invention is at the deficiencies in the prior art,
Technical scheme of the present invention is as follows:
A kind of LED display module comprises: control panel and at least one LED lamp plate; Described control panel comprises first pcb board and control circuit, and described control circuit is arranged on described first pcb board, is connected to described LED lamp plate, is used for providing control signal by described first pcb board to described LED lamp plate; Described LED lamp plate comprises second pcb board, column drive circuit and at least one LED pixel, described LED pixel is arranged at the front of described second pcb board, described column drive circuit is arranged at the back side of described second pcb board, be used to receive described control signal, it is luminous to drive each described LED pixel according to described control signal.
Described LED display module, described LED lamp plate also comprise the row's of pegging graft pin, and described control panel correspondence comprises the grafting row pin position that is arranged on described first pcb board; Described grafting row pin is fixed in the back side of described second pcb board, and an end is electrically connected with described column drive circuit, and the other end is electrically connected with described grafting row pin position, is used for to described column drive circuit transmission of control signals.
Described LED display module, described LED lamp plate comprises 64 LED pixels, described 64 LED pixels form 8 and take advantage of 8 quadrate array.
Described LED display module, described LED pixel comprises at least one blue led, at least one red LED, at least one green LED.
Described LED display module, described column drive circuit bundled encapsulation is at the back side of described second pcb board.
Described LED display module, described LED lamp plate also comprises a sealing printing opacity face shield, described LED pixel is formed by the front of led chip bundled encapsulation at described second pcb board, described sealing printing opacity face shield covers described led chip, and described sealing printing opacity face shield and described second pcb board are sealed into one.
Described LED display module is characterized in that, described sealing printing opacity face shield extends to form at least one support portion along the described second pcb board back side normal direction, is used to support described LED lamp plate.
Described LED display module extends to form four described support portions, is arranged at four jiaos of described sealing printing opacity face shield respectively.
Described LED display module extends to form four described support portions, is symmetricly set in four limits of described sealing printing opacity face shield in twos.
Described LED display module, described support portion are set to be higher than the back side of described sealing printing opacity face shield.。
Adopt such scheme, the present invention compared with prior art has the following advantages:
1, the column signal that wherein connects LED lamp negative pole all is the local output of driving circuit, but because driving circuit cascade, the variation of lamp number of spots can not influence the tie point quantity of control panel and LED lamp plate on this programme LED lamp plate, significantly reduce the signal transmission tie point between control panel and the LED lamp plate simultaneously, improved the stability and the reliability of signal transmission;
2, help flexible processing controls plate and be connected, simplify production and processing process with the hardware of LED lamp plate
3, for convenience detach, reduce later period maintenance cost and difficulty;
4, owing to the driving circuit on the former control panel is transferred on the LED lamp plate, the position of driving circuit can be by hollow out on the former like this control panel, not only can solve the heat dissipation problem of whole LED display module structure well, can also save the PCB material, alleviate the weight of whole LED display module.
Description of drawings
Fig. 1 is the prior art constructions synoptic diagram;
Fig. 2 is the structural representation of LED display module of the present invention;
Fig. 3 is the structural representation of control panel of the present invention;
Fig. 4 is the structural representation in LED lamp plate of the present invention front;
Fig. 5 is the structural representation at the LED lamp plate of the present invention back side;
Fig. 6 is the signal definition synoptic diagram at the LED lamp plate of the present invention back side
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
Present embodiment provides a kind of LED display module, with reference to figure 2, Fig. 3, Fig. 4 and Fig. 5, comprise: control panel 10 and at least one LED lamp plate 20, described control panel 10 comprises first pcb board 101 and control circuit 102, described control circuit is used for providing control signal by described first pcb board 101 to described LED lamp plate 20, described LED lamp plate 20 comprises second pcb board 206, column drive circuit 205 and LED pixel 201, described LED pixel 201 places the front of described second pcb board 206, described column drive circuit places the back side of described second pcb board 206, be used to receive described control signal, it is luminous to drive described LED pixel 201 according to described control signal; Like this, the present invention is by transferring to column drive circuit 205 above the LED lamp plate, the position of driving circuit can be by hollow out or do not arrange any components and parts on the former like this control panel 10, thereby can solve the heat dissipation problem of whole LED display module structure well, can also save the PCB material, alleviate whole LED display module weight; Reduce the signal transmission tie point between control panel and the LED lamp plate, improved the stability and the reliability of signal transmission; Help flexible processing controls plate and be connected, simplify production and processing process with the hardware of LED lamp plate; For convenience detach, reduce later period maintenance cost and difficulty.
Preferably, this LED lamp plate also comprises the row's of pegging graft pin, described grafting row pin is fixed in the back side of described second pcb board 206, one end of the row's of pegging graft pin is electrically connected with described column drive circuit, accordingly, on first pcb board 101, be provided with identical with above-mentioned grafting row pin quantity, the grafting row pin position of size coupling, make the other end of above-mentioned grafting row pin realize being electrically connected by the row of pegging graft pin position with described first pcb board 101, be used for to described column drive circuit 205 transmission of control signals, the volume cost those skilled in the art of above-mentioned grafting row pin can freely select according to the dissimilar of lamp plate, for example, the tri coloured lantern plate of sweeping with 8 * 8 pixels 4 is an example, as shown in Figure 6, respectively arrange the signal definition of pin for this kind lamp plate, the left side one row row pin is electrically connected with the top chip for driving among the figure, the right one row row pin is electrically connected with the bottom chip for driving, classify example as with the right one, each signal is followed successively by from top to bottom: row signal H1, row signal H2, ground connection GND, enable signal OE, data output DOUT, ground connection GND, outer meeting resistance input REX, power supply VCC, data input DIN, clock SCK, be written into signal LAT, ground connection GND, row signal H3 and row signal H4, the left side one row are identical with above-mentioned signal definition from bottom to up, repeat no more, adopt row's pin to connect control panel 10 and LED lamp plate 20, not only can transmission signals can also play the effect of fixed L ED lamp plate.
Embodiment 2
On the basis of embodiment 1, preferably, LED lamp plate during present embodiment is described comprises 64 LED pixels, described 64 LED pixels form 8 and take advantage of 8 quadrate array, LED lamp plate as shown in Figure 4 forms 8 by 64 same LED pixels 201 and takes advantage of 8 quadrate array, such quadrate array, convenient installation, the convenient use.
Perhaps, preferred, above-mentioned LED pixel is made up of at least one blue led, at least one red LED, at least one green LED, and above-mentioned LED can adopt the LED lamp of arbitrary shape, any encapsulating structure as required.
Perhaps, preferably, the face shield 202 of present embodiment integrated sealing printing opacity on LED lamp plate 20, this lampshade is the structure of water-tight, comprise 64 through holes on its surface, this face shield and the second pcb board sealing and fixing are together, like this, each through hole inside holds a LED pixel, in through hole, inject transparent material, also do encapsulation process, make its integral sealing and the light of LED pixel can be transmitted at second pcb board and face shield joint, She Ji LED lamp plate can waterproof like this, and visual effect is better.
Perhaps, preferred, the PCB space in order to reduce cost, and is saved in the back side of second pcb board in above-mentioned LED lamp plate, can be with driving circuit 205 bindings (Bonding) back side at second pcb board.
Embodiment 3
On the basis of the foregoing description, preferably, present embodiment with described sealing printing opacity face shield 203 along described second pcb board, 206 back side normal directions, promptly perpendicular to the direction of second pcb board, extend to form support portion 203, described support portion 203 is used for supporting described LED lamp plate 20 when being installed in LED lamp plate 20 on the control panel 10, LED lamp plate 20 is unlikely to about, teetertotter.
Further, a preferred example, four support portions 203 can be set, above-mentioned support portion 203 is arranged on four pin of described sealing printing opacity face shield 202, as shown in Figure 4, above-mentioned support portion 203 can be higher than above-mentioned sealing printing opacity face shield 202 back sides simultaneously, like this after installing, can stay the space between LED lamp plate 20 and the control panel 10, so that heat radiation; Another example can also be symmetricly set on above-mentioned four support portions 203 on the four edges of described sealing printing opacity face shield 202 in twos, and promptly every limit is provided with a support portion, and adjacent supports portion distance equates.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1, a kind of LED display module is characterized in that, comprising: control panel and at least one LED lamp plate; Described control panel comprises first pcb board and control circuit, and described control circuit is arranged on described first pcb board, is connected to described LED lamp plate, is used for providing control signal by described first pcb board to described LED lamp plate; Described LED lamp plate comprises second pcb board, column drive circuit and at least one LED pixel, described LED pixel is arranged at the front of described second pcb board, described column drive circuit is arranged at the back side of described second pcb board, be used to receive described control signal, it is luminous to drive each described LED pixel according to described control signal.
2, LED display module according to claim 1 is characterized in that, described LED lamp plate also comprises the row's of pegging graft pin, and described control panel correspondence comprises the grafting row pin position that is arranged on described first pcb board; Described grafting row pin is fixed in the back side of described second pcb board, and an end is electrically connected with described column drive circuit, and the other end is electrically connected with described grafting row pin position, is used for to described column drive circuit transmission of control signals.
3, LED display module according to claim 1 is characterized in that, described LED lamp plate comprises 64 LED pixels, and described 64 LED pixels form 8 and take advantage of 8 quadrate array.
4, LED display module according to claim 1 is characterized in that, described LED pixel comprises at least one blue led, at least one red LED, at least one green LED.
5, according to the arbitrary described LED display module of claim 1 to 4, it is characterized in that described column drive circuit bundled encapsulation is at the back side of described second pcb board.
6, according to the arbitrary described LED display module of claim 1 to 4, it is characterized in that, described LED lamp plate also comprises a sealing printing opacity face shield, described LED pixel is formed by the front of led chip bundled encapsulation at described second pcb board, described sealing printing opacity face shield covers described led chip, and described sealing printing opacity face shield and described second pcb board are sealed into one.
7, LED display module according to claim 6 is characterized in that, described sealing printing opacity face shield extends to form at least one support portion along the described second pcb board back side normal direction, is used to support described LED lamp plate.
8, LED display module according to claim 7 is characterized in that, extends to form four described support portions, is arranged at four jiaos of described sealing printing opacity face shield respectively.
9, LED display module according to claim 7 is characterized in that, extends to form four described support portions, is symmetricly set in four limits of described sealing printing opacity face shield in twos.
10, according to Claim 8 with 9 arbitrary described LED display modules, it is characterized in that described support portion is set to be higher than the back side of described sealing printing opacity face shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910092022.4A CN101640012B (en) | 2009-09-04 | 2009-09-04 | LED display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910092022.4A CN101640012B (en) | 2009-09-04 | 2009-09-04 | LED display module |
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| CN101640012A true CN101640012A (en) | 2010-02-03 |
| CN101640012B CN101640012B (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910092022.4A Expired - Fee Related CN101640012B (en) | 2009-09-04 | 2009-09-04 | LED display module |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056408A (en) * | 2011-01-07 | 2011-05-11 | 深圳市中庆微科技开发有限公司 | Copper pillar type welded printed circuit board (PCB) and light-emitting diode (LED) display device |
| CN102149250A (en) * | 2011-01-10 | 2011-08-10 | 深圳市中庆微科技开发有限公司 | Pin-type welded PCB (printed circuit board) and LED (light-emitting diode) display device |
| CN103208241A (en) * | 2013-04-02 | 2013-07-17 | 长春希达电子技术有限公司 | Double-face composite LED (light-emitting diode) display unit plate and packaging method thereof |
| CN103208239A (en) * | 2013-04-01 | 2013-07-17 | 长春希达电子技术有限公司 | LED (light emitting diode) display unit panel with shading films |
| CN103354067A (en) * | 2013-06-21 | 2013-10-16 | 北京金立翔艺彩科技股份有限公司 | Led display unit |
| CN104091538A (en) * | 2014-07-10 | 2014-10-08 | 福建华瀚明光电科技有限公司 | LED dot matrix module and production technology thereof |
| CN104882531A (en) * | 2015-06-08 | 2015-09-02 | 杨子龙 | LED integrated light-emitting module group |
| CN106205409A (en) * | 2016-09-22 | 2016-12-07 | 深圳市奥蕾达科技有限公司 | A kind of LED strip screen and LED strip screen unit |
| CN106488395A (en) * | 2016-11-28 | 2017-03-08 | 石狮市森科智能科技有限公司 | A kind of LED display methods based on Bluetooth transmission protocol |
| WO2020024974A1 (en) * | 2018-08-01 | 2020-02-06 | 京东方科技集团股份有限公司 | Circuit board assembly, display device and manufacturing method therefor |
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| JPH06187575A (en) * | 1992-12-16 | 1994-07-08 | Matsushita Electric Ind Co Ltd | Led display |
| EP0691637A1 (en) * | 1994-07-07 | 1996-01-10 | Gerhard Abler | Illuminated display for advertising, information or similar |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056408B (en) * | 2011-01-07 | 2015-11-18 | 深圳市中庆微科技开发有限公司 | A kind of pcb board of copper column type welding and LED display |
| CN102056408A (en) * | 2011-01-07 | 2011-05-11 | 深圳市中庆微科技开发有限公司 | Copper pillar type welded printed circuit board (PCB) and light-emitting diode (LED) display device |
| CN102149250A (en) * | 2011-01-10 | 2011-08-10 | 深圳市中庆微科技开发有限公司 | Pin-type welded PCB (printed circuit board) and LED (light-emitting diode) display device |
| CN102149250B (en) * | 2011-01-10 | 2016-04-27 | 深圳市中庆微科技开发有限公司 | A kind of pcb board of contact pin type welding and LED display |
| CN103208239A (en) * | 2013-04-01 | 2013-07-17 | 长春希达电子技术有限公司 | LED (light emitting diode) display unit panel with shading films |
| CN103208239B (en) * | 2013-04-01 | 2015-04-15 | 长春希达电子技术有限公司 | LED (light emitting diode) display unit panel with shading films |
| CN103208241A (en) * | 2013-04-02 | 2013-07-17 | 长春希达电子技术有限公司 | Double-face composite LED (light-emitting diode) display unit plate and packaging method thereof |
| CN103354067A (en) * | 2013-06-21 | 2013-10-16 | 北京金立翔艺彩科技股份有限公司 | Led display unit |
| CN104091538A (en) * | 2014-07-10 | 2014-10-08 | 福建华瀚明光电科技有限公司 | LED dot matrix module and production technology thereof |
| CN104091538B (en) * | 2014-07-10 | 2016-08-31 | 东莞市光劲光电有限公司 | A kind of LED dot array module and production technology thereof |
| CN104882531A (en) * | 2015-06-08 | 2015-09-02 | 杨子龙 | LED integrated light-emitting module group |
| CN106205409A (en) * | 2016-09-22 | 2016-12-07 | 深圳市奥蕾达科技有限公司 | A kind of LED strip screen and LED strip screen unit |
| CN106488395A (en) * | 2016-11-28 | 2017-03-08 | 石狮市森科智能科技有限公司 | A kind of LED display methods based on Bluetooth transmission protocol |
| CN106488395B (en) * | 2016-11-28 | 2019-09-27 | 石狮市森科智能科技有限公司 | A kind of LED display methods based on Bluetooth transmission protocol |
| WO2020024974A1 (en) * | 2018-08-01 | 2020-02-06 | 京东方科技集团股份有限公司 | Circuit board assembly, display device and manufacturing method therefor |
| US11350527B2 (en) | 2018-08-01 | 2022-05-31 | K-Tronics (Suzhou) Technology Co., Ltd. | Circuit board assembly, display device and method for manufacturing the same |
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| CN101640012B (en) | 2014-05-07 |
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