CN202487115U - Digital tubes with built-in drive chip - Google Patents
Digital tubes with built-in drive chip Download PDFInfo
- Publication number
- CN202487115U CN202487115U CN2012200516505U CN201220051650U CN202487115U CN 202487115 U CN202487115 U CN 202487115U CN 2012200516505 U CN2012200516505 U CN 2012200516505U CN 201220051650 U CN201220051650 U CN 201220051650U CN 202487115 U CN202487115 U CN 202487115U
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- charactron
- chip
- driving
- built
- light emitting
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model mainly discloses digital tubes with a built-in drive chip. The digital tubes with the built-in drive chip comprise the digital tubes and the drive chip. Light-emitting diodes of one digital tube are in common cathode connection to form cathode input ends which are connected with bit output pins of the drive chip, and anodes of the light-emitting diodes of the digital tubes are respectively connected with output section pins of the drive chip. By integrating the drive chip controlled by the light-emitting diodes on the digital tubes, the digital tubes with the built-in drive chip achieve modularization and integration of the digital tubes and drive control functions.
Description
Technical field
The utility model relates to electronic technology field, and is special relevant with a kind of built-in chip for driving charactron.
Background technology
Charactron is as shown in Figure 1, and each charactron comprises 8 light emitting diode A, B, C, D, E, F, G, D
P(comprising radix point), its circuit connects as shown in Figure 2, is altogether 4 charactrons among the figure; 8 light emitting diode common cathodes in 1 charactron connect; Form 4 negative electrode input ends, the light emitting diode of the same position of 4 charactrons is parallel with one another, forms 8 anode input ends.
During charactron work, need on negative electrode input end and anode input end, add peripheral circuit,, make charactron demonstrate respective digital to realize the light emitting diode conducting.
Owing in traditional charactron driving circuit, be not to adopt integrated mode, but through the driving circuit that many discrete components are formed, make that element is various on the panel, the circuit layout difficulty.Be unfavorable for that integration mode control charactron shows.
In order to address the above problem, the inventor designs a kind of built-in chip for driving charactron, and this case produces thus.
The utility model content
The purpose of the utility model provides a kind of built-in chip for driving charactron, adopts LED controlling and driving chip EXC2618N is integrated on the charactron, has realized charactron and drive controlling function modoularization, integrated.
In order to achieve the above object, the utility model is realized through following technical scheme:
A kind of built-in chip for driving charactron comprises charactron and chip for driving, and the light emitting diode common cathode of a charactron connects, and forms the negative electrode input end, is connected with the position output pin of chip for driving; The anode of charactron light emitting diode is connected on the chip for driving deferent segment pin.
Described charactron comprises 4; Bits per inch sign indicating number pipe comprises 8 light emitting diodes, and 8 light emitting diode common cathodes in the same charactron connect, and form 4 negative electrode input ends; The light emitting diode of the same position of 4 charactrons is parallel with one another, forms 8 anode input ends.
Described chip for driving model is EXC2618N.
After adopting such scheme, the utlity model has many beneficial effects:
1, built-in chip for driving in the utility model has reduced panel component significantly, reduces the chip for driving cost, reduces to connect winding displacement, discrete component, socket head, socket quantity;
2, because the panel PCB layout is simple, can use single face PCB design, reduce the PCB area, and it is good not have the wire jumper anti-interference;
3, all types of on the market LED charactron display module interfaces are identical, and the Control Software simple, general-purpose helps panel PCB versatility;
4, cost is low, and when using in enormous quantities, production cost accounts for clear superiority;
5, Drive and Control Circuit is built-in in the utility model, except that driving 32 light emitting diodes of 4 charactrons itself, also can drive outside nearly 39 light emitting diodes and 30 buttons.
Description of drawings
Fig. 1 is a charactron light emitting diode distribution plan in the prior art;
Fig. 2 is the circuit diagram of charactron in the prior art;
Fig. 3 is the circuit diagram of the utility model preferred embodiment.
Embodiment
In conjunction with accompanying drawing, preferred embodiment explains further details to the utility model.
A kind of built-in chip for driving charactron comprises charactron 1 and chip for driving 2, and charactron is 4 altogether in the present embodiment, and all has radix point.So bits per inch sign indicating number Guan Quanliang needs 8 light emitting diodes; Bits per inch sign indicating number pipe comprises 8 light emitting diode A, B, C, D, E, F, G, H; 8 light emitting diode common cathodes in the same charactron connect; Form 4 negative electrode input end C1, C2, C3, C4, the light emitting diode of the same position of 4 charactrons is parallel with one another, forms 8 anode input end A, B, C, D, E, F, G, H.
It is EXC2618N that chip for driving 2 adopts model, is a kind of LED with the keyboard scan interface (light emitting diode indicator) Drive and Control Circuit, and inside is integrated with circuit such as MCU digital interface, data latches, LED high drive, keyboard scan.4 negative electrode input end C1, C2, C3, C4 in the charactron 1 are connected on the pin two 7,26,24,23, and these four pins are respectively COM1, COM2, COM3, the COM4 mouths of position output.8 anode input end A, B, C, D, E, F, G, H of charactron are connected on the pin 8,9,10,11,12,13,14,15, SEG1/KS1, SEG2/KS2, SEG3/KS3, SEG4/KS4, SEG5/KS5, SEG6/KS6, SEG7/KS7, SEG8/KS8 that these eight pins are respectively deferent segments.
When needs driving charactron is lighted work, need only burning driver in chip for driving 2.Control simple and conveniently, the panel discrete component is few, and layout is simplified.
The foregoing description only be used to explain inventive concept of the utility model, but not to the qualification of the utility model rights protection allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should fall into the protection domain of the utility model.
Claims (3)
1. built-in chip for driving charactron is characterized in that: comprise charactron and chip for driving, the light emitting diode common cathode of a charactron connects, and forms the negative electrode input end, is connected with the position output pin of chip for driving; The anode of charactron light emitting diode is connected on the chip for driving deferent segment pin.
2. a kind of built-in chip for driving charactron as claimed in claim 1; It is characterized in that: described charactron comprises 4; Bits per inch sign indicating number pipe comprises 8 light emitting diodes, and 8 light emitting diode common cathodes in the same charactron connect, and form 4 negative electrode input ends; The light emitting diode of the same position of 4 charactrons is parallel with one another, forms 8 anode input ends.
3. a kind of built-in chip for driving charactron as claimed in claim 1, it is characterized in that: described chip for driving model is EXC2618N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200516505U CN202487115U (en) | 2012-02-17 | 2012-02-17 | Digital tubes with built-in drive chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200516505U CN202487115U (en) | 2012-02-17 | 2012-02-17 | Digital tubes with built-in drive chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202487115U true CN202487115U (en) | 2012-10-10 |
Family
ID=46961519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200516505U Expired - Fee Related CN202487115U (en) | 2012-02-17 | 2012-02-17 | Digital tubes with built-in drive chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202487115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654862A (en) * | 2016-03-09 | 2016-06-08 | 江门吉华光电精密有限公司 | Energy-saving nixie tube and control method |
| CN108922465A (en) * | 2018-07-04 | 2018-11-30 | 佛山市顺德区新迅电子科技有限公司 | A kind of charactron connection circuit |
-
2012
- 2012-02-17 CN CN2012200516505U patent/CN202487115U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654862A (en) * | 2016-03-09 | 2016-06-08 | 江门吉华光电精密有限公司 | Energy-saving nixie tube and control method |
| CN108922465A (en) * | 2018-07-04 | 2018-11-30 | 佛山市顺德区新迅电子科技有限公司 | A kind of charactron connection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20150217 |
|
| EXPY | Termination of patent right or utility model |