CN101436367A - LED display control device - Google Patents
LED display control device Download PDFInfo
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- CN101436367A CN101436367A CNA2007101868007A CN200710186800A CN101436367A CN 101436367 A CN101436367 A CN 101436367A CN A2007101868007 A CNA2007101868007 A CN A2007101868007A CN 200710186800 A CN200710186800 A CN 200710186800A CN 101436367 A CN101436367 A CN 101436367A
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Abstract
The invention provides an LED display control device, which is characterized by comprising a display control unit for processing data input by a user and generating corresponding signals, an LED driving unit for driving an LED display module to display data set by the user according to the generated signals, and the LED display module. The LED display control device uses a simpler display driving circuit, so that display luminance of displayed content is even, and the whole display is harmonious.
Description
Technical field
The present invention relates to a kind of LED and show opertaing device.
Background technology
Air-conditioning system is used to regulate indoor air temperature and humidity, keeps room air fresh.Usually, air-conditioning system is made up of control device, main control unit and split or cabinet-type air conditioner unit etc.The air-conditioning display is indicated running state of air conditioner as the part of main control unit.Along with reaching its maturity of room air conditioner technology, expedited the emergence of numerous functions, room air conditioner becomes the carrier of numerous functions; In addition, in the air conditioner self-operating process, have many air-conditioning system performance parameters and state.
Along with the continuous development of LED technology and the LED advantage at aspects such as low-power consumption, long-life, environmental protection, the LED application increases gradually.The big screen LED display can be with above content centralized displaying, and the user can intuitively understand the running status and the system performance parameter of the air-conditioning in the use.
The luminous component of sheet-shaped LED luminotron mainly comprises luminescence chip and medium, and luminescence chip difference, corresponding LED forward voltage are also different, as blue light: 2.8～3.6VDC, and ruddiness: 1.8～2.5VDC.Use if need to mix the different LED of forward voltage in the design, even for making display brightness, need to create one for all approximately uniform luminous environment of each LED.
Summary of the invention
The invention provides a kind of LED display control apparatus,, can show more content and the use of the restricted requirement of setting type by simple display driver circuit.
LED display control apparatus of the present invention comprises: indicative control unit is used to handle the data of user's input and produce corresponding signal; The LED driver element is used for according to the signal that produces, and the driving LED display module shows the data that the user sets; And LED display module.
Wherein, indicative control unit holds timesharing to produce signal successively being total to the lasting signal that produces of oedoeagus cloudy altogether.The LED driver element comprises: forward driver is used to produce positive drive signal; And reverse driven, be used to produce zero drive signal.The LED display module comprises: single LED loop of multichannel and the two LED loops of multichannel, and the current value in multichannel single LED loop and two LED loops equates.
LED in the LED loop be following one of at least: white sheet-shaped LED, yellow sheet-shaped LED, orange sheet-shaped LED, green sheet-shaped LED, red sheet-shaped LED, blue sheet-shaped LED and white sheet-shaped LED.Series limiting resistor between LED driver element and LED display module according to the LED of different colours in the LED loop, is regulated the brightness that reaches regulation that current-limiting resistance makes the LED in the LED loop.According to the forward voltage of LED in the LED loop, the voltage of forward current and the described current-limiting resistance of the voltage-regulation of drive dissipation.
In white sheet-shaped LED loop, current-limiting resistance is 50-200 Europe, and the brightness of LED is the little candle light of 300-500.In yellow, orange and green sheet-shaped LED loop, current-limiting resistance is 150-200 Europe, and the brightness of LED is the little candle light of 30-80.In red sheet-shaped LED loop, current-limiting resistance 150-200 Europe, the brightness of LED is the little candle light of 10-40.In blue sheet-shaped LED loop, current-limiting resistance is 100-150 Europe, and the brightness of LED is the little candle light of 20-60.
The invention provides a kind of LED display control apparatus, use better simply display driver circuit, make the display brightness of displaying contents even, and whole the demonstration coordinates.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is according to LED display control apparatus system construction drawing of the present invention;
Fig. 2 is the circuit diagram according to LED display control apparatus of the present invention;
Fig. 3 is the LED display module circuit diagram according to LED display control apparatus of the present invention;
Fig. 4 is the scanner uni interruption principle schematic according to LED display control method of the present invention; And
Fig. 5 is the display timing generator synoptic diagram according to LED display control method of the present invention.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
LED display control apparatus system architecture of the present invention as shown in Figure 1, comprising:
Indicative control unit 100 is used to handle the data of user's input and produce corresponding signal.
LED driver element 200 is used for according to the signal that produces, and the driving LED display module shows the data that the user sets.
Display module 300.
The concrete structure of LED display control apparatus of the present invention, as shown in Figure 2.
The LED driver element comprises forward driver and reverse driven.More excellent, forward driver can adopt the TD62783APG chip, and reverse driven can adopt the ULN2003AG chip.The TD62783APG chip has 8 tunnel drive mouths, operating voltage+12V, and input control voltage signal+5V, every road drives the maximum 500mA of output current; The ULN2003AG chip has 7 tunnel drive mouths, operating voltage+12V, and input control voltage signal+5V, every road drives the maximum 500mA of output current.For the TD62783APG chip, one+5V of input signal is given the TD62783APG chip, and TD62783APG chip delivery outlet will be exported a positive drive signal; For the ULN2003AG chip, one+5V of input signal is given the ULN2003AG chip, and ULN2003AG chip delivery outlet will be exported one zero drive signal.Led module oedoeagus altogether connects the output of TD62783APG chip by current-limiting resistance, and led module is cloudy termination ULN2003AG chip altogether, gives signal when led module is total to oedoeagus, led module cloudy end timesharing is altogether given signal successively, corresponding displaying contents will be lighted, and thus, has realized that scanning shows.
The LED display module as shown in Figure 3, comprises single LED loop of multichannel and the two LED loops of multichannel.The present invention uses the mode of common cloudy scanning, and oedoeagus is 11 sections altogether in the present embodiment, and cloudy altogether end is 12 sections, and each luminous moment, oedoeagus is all given signal for every section altogether, and cloudy altogether end has only 1 to give signal.Therefore, luminous other section that is not subjected to of each LED influences.For the working environment that makes each LED is approximate identical,, strict single led loop and the series connection of two LED loops are differentiated at oedoeagus place altogether.The LED display module adopts the sheet-shaped LED luminotron, and the luminous component of sheet-shaped LED luminotron mainly comprises luminescence chip and medium, and luminescence chip difference, corresponding LED forward voltage are also different.In use need to mix the different LED of forward voltage and use, need to create one, each LED is created a freestanding environment for this reason for all approximately uniform luminous environment of each LED.
The current-limiting resistance of series connection power 1w according to the LED of different colours in the LED loop, is regulated the brightness that reaches regulation that current-limiting resistance makes the LED in the LED loop between LED driver element and LED display module.
The present invention can adopt the LED of multiple color, comprising: white sheet-shaped LED, yellow sheet-shaped LED, orange chip, green sheet-shaped LED, red sheet-shaped LED, blue sheet-shaped LED and white sheet-shaped LED.
According to the forward voltage of LED in the LED loop, the voltage of forward current and the described current-limiting resistance of the voltage-regulation of drive dissipation make the luminosity of LED reach specified standard.
In white sheet-shaped LED loop, current-limiting resistance is 50-200 Europe, and the brightness of LED is the little candle light of 300-500.In yellow, orange and green sheet-shaped LED loop, current-limiting resistance is 150-200 Europe, and the brightness of LED is the little candle light of 30-80.In red sheet-shaped LED loop, current-limiting resistance 150-200 Europe, the brightness of LED is the little candle light of 10-40.In blue sheet-shaped LED loop, current-limiting resistance is 100-150 Europe, and the brightness of LED is the little candle light of 20-60.
For the electric current that guarantees every loop meets the requirements, the display brightness unanimity, regulating current-limiting resistance needs to take all factors into consideration the size that shows total current simultaneously, avoids the supply current deficiency, influences display effect.Be example with white sheet-shaped LED below, the total current size that the LED display control apparatus needs is described.
Adopt+led drive circuit of 12VDC in, single LED loop series limiting resistor is 150 Ω, 5 of feeder numbers; Two LED loop series limiting resistor is 100 Ω, 6 of feeder numbers; White LED shows that forward voltage is 3.0VDC; It is 1.0VDC that TD62783APG chip, ULN2003AG chip consume pressure drop;
Be calculated as follows:
The loop current of single LED: (12.0-3.0-1.0) ÷ 150 ≈ 0.053A;
The loop current of two LED: (12.0-3.0*2-1.0) ÷ 100=0.050A;
Thus, show that current DC survey total current maximal value is:
0.053 * 5+0.050 * 6=0.565A could guarantee to show that supply current is enough, thereby reach display brightness.
Indicative control unit passes to common oedoeagus and cloudy altogether end with the signal that produces, by sun altogether, altogether cloudy end driving circuit to drive display module luminous.
Scanner uni of the present invention interrupts principle as shown in Figure 4, when how many common cathodes display module has, just reserve how many individual positive display buffer registers altogether in the program, be used to store the common oedoeagus data that are used for showing, the every 100ms of this buffer zone refreshes displaying contents one time, the reading scan that a 1ms is set is simultaneously interrupted, per stage will be total to oedoeagus data buffer data and compose the mouth to anode IO, the negative electrode IO mouth of scanning correspondence simultaneously, next stage is composed the mouth to anode IO with the next stage common oedoeagus data buffer data of correspondence, the negative electrode IO mouth of scanning correspondence simultaneously, and the like.
Display timing generator of the present invention interrupts when the reading scan that enters 1ms as shown in Figure 5, has only 1 negative electrode that signal is arranged at every turn, and negative electrode and corresponding anode cooperate, and corresponding position LED in should sweep circuit is lighted.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a LED display control apparatus is characterized in that, comprising:
Indicative control unit is used to handle the data of user's input and produce corresponding signal;
The LED driver element is used for according to the described signal that produces, and the driving LED display module shows the data that described user sets; And
The LED display module.
2. LED display control apparatus according to claim 1 is characterized in that, described indicative control unit holds timesharing to produce signal successively being total to the lasting signal that produces of oedoeagus cloudy altogether.
3. LED display control apparatus according to claim 1 is characterized in that, described LED driver element comprises:
Forward driver is used to produce positive drive signal; And
Reverse driven is used to produce zero drive signal.
4. LED display control apparatus according to claim 1 is characterized in that, described LED display module comprises: single LED loop of multichannel and the two LED loops of multichannel.
5. LED display control apparatus according to claim 4 is characterized in that, the LED in the described LED loop be following one of at least: white sheet-shaped LED, yellow sheet-shaped LED, orange sheet-shaped LED, green sheet-shaped LED, red sheet-shaped LED and blue sheet-shaped LED.
6. LED display control apparatus according to claim 5, it is characterized in that, series limiting resistor between described LED driver element and described LED display module, regulate the brightness that reaches regulation that described current-limiting resistance makes the LED in the described LED loop, and every current in loop value equates.
7. LED display control apparatus according to claim 6 is characterized in that, according to the forward voltage of LED in the described LED loop, and the voltage of forward current and the described current-limiting resistance of the voltage-regulation of drive dissipation.
8. LED display control apparatus according to claim 7 is characterized in that, in described white sheet-shaped LED loop, current-limiting resistance is 50-200 Europe, and the brightness of LED is the little candle light of 300-500.
9. LED display control apparatus according to claim 7 is characterized in that, in described yellow, orange and green sheet-shaped LED loop, current-limiting resistance is 150-200 Europe, and the brightness of LED is the little candle light of 30-80.
10. LED display control apparatus according to claim 7 is characterized in that, in described red sheet-shaped LED loop, and current-limiting resistance 150-200 Europe, the brightness of LED is the little candle light of 10-40.
11. LED display control apparatus according to claim 7 is characterized in that, in described blue sheet-shaped LED loop, current-limiting resistance is 100-150 Europe, and the brightness of LED is the little candle light of 20-60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101868007A CN101436367B (en) | 2007-11-16 | 2007-11-16 | Led display control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101868007A CN101436367B (en) | 2007-11-16 | 2007-11-16 | Led display control device |
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| Publication Number | Publication Date |
|---|---|
| CN101436367A true CN101436367A (en) | 2009-05-20 |
| CN101436367B CN101436367B (en) | 2011-04-13 |
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| CN2007101868007A Active CN101436367B (en) | 2007-11-16 | 2007-11-16 | Led display control device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723056A (en) * | 2012-06-01 | 2012-10-10 | 深圳市明微电子股份有限公司 | LED display panel driving method, device, display system and equipment |
| CN104680964A (en) * | 2013-11-26 | 2015-06-03 | 美的集团股份有限公司 | Dish washing machine and LED (Light Emitting Diode) Nixie tube display driving circuit and method thereof |
| CN113450725A (en) * | 2020-03-26 | 2021-09-28 | 聚积科技股份有限公司 | Scanning display and driving device and driving method thereof |
| CN113450726A (en) * | 2020-03-26 | 2021-09-28 | 聚积科技股份有限公司 | Scanning display and driving device and driving method thereof |
| CN113450724A (en) * | 2020-03-26 | 2021-09-28 | 聚积科技股份有限公司 | Scanning display and driving device thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100637437B1 (en) * | 2004-06-03 | 2006-10-20 | 삼성에스디아이 주식회사 | Liquid crystal display device |
-
2007
- 2007-11-16 CN CN2007101868007A patent/CN101436367B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723056A (en) * | 2012-06-01 | 2012-10-10 | 深圳市明微电子股份有限公司 | LED display panel driving method, device, display system and equipment |
| CN102723056B (en) * | 2012-06-01 | 2015-11-25 | 深圳市明微电子股份有限公司 | A kind of LED display panel driving method, device, display system and equipment |
| CN104680964A (en) * | 2013-11-26 | 2015-06-03 | 美的集团股份有限公司 | Dish washing machine and LED (Light Emitting Diode) Nixie tube display driving circuit and method thereof |
| CN113450725A (en) * | 2020-03-26 | 2021-09-28 | 聚积科技股份有限公司 | Scanning display and driving device and driving method thereof |
| CN113450726A (en) * | 2020-03-26 | 2021-09-28 | 聚积科技股份有限公司 | Scanning display and driving device and driving method thereof |
| CN113450724A (en) * | 2020-03-26 | 2021-09-28 | 聚积科技股份有限公司 | Scanning display and driving device thereof |
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| Publication number | Publication date |
|---|---|
| CN101436367B (en) | 2011-04-13 |
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