CN201638533U - LED backlight display control equipment - Google Patents
LED backlight display control equipment Download PDFInfo
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- CN201638533U CN201638533U CN2010201483355U CN201020148335U CN201638533U CN 201638533 U CN201638533 U CN 201638533U CN 2010201483355 U CN2010201483355 U CN 2010201483355U CN 201020148335 U CN201020148335 U CN 201020148335U CN 201638533 U CN201638533 U CN 201638533U
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Abstract
LED backlight display control equipment comprises an LED display module and is characterized by also comprising a backlight display control unit and a backlight display driving unit, wherein the backlight display control unit is used for processing the input control data and generating corresponding control signals; and the backlight display driving unit is used for driving a backlight display module according the generated control signals, and the backlight display module comprises more than one LED display module. The backlight display control unit and the backlight display driving unit are in communication protocol connection by a clock line and a data line. The backlight display control unit comprises a singlechip 78F0511A, and the backlight display driving unit is provided with 1-16 paths of output. In the LED display module, one row can be formed by connecting one LED with a current-limiting resistor in series, or connecting two LEDs with the current-limiting resistor in series, or connecting three LEDs with the current-limiting resistor in series. The LED backlight display control equipment has the characteristics of simple and reasonable structure, low power loss, long service life, adjustable brightness at any time, and wide application range.
Description
Technical field
The utility model relates to a kind of LED-backlit display control apparatus.
Background technology
Air-conditioning panel pattern in the past has on the market does not have backlight, makes the panel pattern seem dim bright.At this situation, some manufacturer has done a little improvement, a kind of cabinet air conditioner with decoration functions backlight was disclosed in 31 days July in 2002 as Chinese patent literature CN2503400Y, the centre panel that comprises indoor set, light-emitting device in the centre panel inboard, light-emitting device is electrically connected with shift knob on the action button plate that is arranged in centre panel; Light-emitting device comprise the control panel inboard that is arranged on centre panel top transparent panel, be arranged at least one group of luminous base and supporting luminotron on the transparent panel, also comprise being arranged on the panel inboard, respectively the plug socket that is connected with luminotron and luminotron gauge tap.The employing fluorescent light backlight of this cabinet air conditioner exists power consumption big, and the life-span is short partially, and the brightness defective that can not change at any time.
The utility model content
The purpose of this utility model aim to provide a kind of simple and reasonable, power consumption is little, the life-span is long, brightness can be regulated at any time, LED-backlit display control apparatus applied widely, to overcome weak point of the prior art.
A kind of LED-backlit display control apparatus by this purpose design, comprise the LED display module, it is characterized in that also comprising the indicative control unit backlight that is used to handle the control data of input and produce control signal corresponding, drive the display driver backlight unit of display module backlight according to the above-mentioned control signal that produces, display module backlight is made up of more than one LED display module.
Constituting communications protocol by clock line and data line between described indicative control unit backlight and the display driver backlight unit is connected.
Described indicative control unit backlight comprises single-chip microcomputer 78F0511A.
Described display driver backlight unit comprises LED display driver chip TLC59116.
There is one to 10 six tunnel output described display driver backlight unit.
A LED series limiting resistor in the described LED display module becomes row, two LED series limiting resistor to become row or three LED series limiting resistor to become row.
Be provided with white sheet-shaped LED, yellow sheet-shaped LED, orange sheet-shaped LED, green sheet-shaped LED, red sheet-shaped LED or blue sheet-shaped LED in the described LED display module.
A kind of air conditioner, comprise light penetrating panel, it is characterized in that also comprising the indicative control unit backlight that is used to handle the control data of input and produce control signal corresponding, the display driver backlight unit that is used for driving LED display module backlight according to the control signal that produces, by the display module backlight that more than one LED display module is formed, display module backlight is arranged on the back of light penetrating panel.
Indicative control unit backlight in the utility model is given display driver backlight unit by transfer instruction and data, and display driver backlight unit drives display module backlight according to these instruction and datas.Backlight driving unit has one to 10 six tunnel output, and each LED display module connects a tunnel or multichannel of display driver backlight unit, is specifically decided by the LED quantity in the LED display module.Because LED has the advantage of low-power consumption, long-life and environmental protection, make and adopt in the utility model and the background technology fluorescent light technical scheme to have clear superiority by comparison, and the brightness of LED can change at any time, and brightness can present the transition effect of gradual change, makes pattern on the light penetrating panel seem to be full of variety and pleasing.
The utlity model has simple and reasonable, power consumption is little, the life-span is long, brightness can be regulated at any time, advantage of wide range of application.
Description of drawings
Fig. 1 is the system chart of the utility model one embodiment.
Fig. 2 is a circuit connection diagram of the present utility model.
Fig. 3 is the display module circuit connection diagram backlight in the utility model.
Fig. 4 is demonstration control timing figure of the present utility model.
Fig. 5 is the schematic appearance of the LED display module of three nineteen LED lamps.
Fig. 6 is the schematic appearance of the LED display module of 33 LED lamps.
Fig. 7 is the schematic appearance of the LED display module of 15 LED lamps.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Referring to Fig. 1, this LED-backlit display control apparatus, comprise: be used to the indicative control unit backlight 100 handling the control data of input and produce control signal corresponding, drive the display driver backlight unit 200 of LED display module backlight according to the above-mentioned control signal that produces, the display module of forming by more than one LED display module backlight 300.Be provided with white sheet-shaped LED, yellow sheet-shaped LED, orange sheet-shaped LED, green sheet-shaped LED, red sheet-shaped LED or blue sheet-shaped LED in the LED display module.Constituting communications protocol by clock line and data line between indicative control unit backlight and the display driver backlight unit is connected.LED display module in the present embodiment is three.
Referring to Fig. 2, indicative control unit backlight mainly is made up of single-chip microcomputer 78F0511A, and this single-chip microcomputer produces the communication signal with driver module; Display driver backlight unit mainly is made up of LED display driver chip TLC59116, the TLC59116 chip is the special LED chip for driving, one has ten six tunnel outputs, the electric current maximum that every road continues to pour into can reach 100mA, the size of current of output is controlled on every road by output pwm signal, reach control LED brightness purpose, the PWM numerical value on every road can be from 0～255 control separately at any time, and its PWM numerical value is transmitted by communication with it by control module.Wherein, pwm signal is a pulse width modulating signal.
Referring to Fig. 3, be the physical circuit synoptic diagram of display module backlight.The used display module backlight of the utility model is made up of three LED display modules, each LED display module not of uniform size, maximum LED display module is made up of three nineteen LED lamps, what another was less is made up of 33 LED lamps, minimum is made up of 15 LED lamps, and used LED lamp is the bright white colored lights.
LED display driver chip TLC59116 is placed in the maximum LED display module, other two LED display modules are connected with LED display driver chip TLC59116 by connecting line, and maximum LED display module is provided with the connection group and is connected with indicative control unit backlight.
Use the output of four tunnel on the LED display driver chip TLC59116 on the LED display module of three nineteen LED lamps altogether, use the output of four tunnel on the LED display driver chip TLC59116 on the LED display module of 33 LED lamps altogether, the LED display module of 15 LED lamps is used two tunnel outputs of LED display driver chip TLC59116 altogether, and three LED display modules are used ten tunnel outputs altogether.
LED in the display module backlight has following three kinds of connected modes:
A: become row by a LED series limiting resistor,
B: become row by two LED series limiting resistor,
C: become row by three LED series limiting resistor,
A road of display driver backlight unit can only connect an A or B or C, also can be to connect by single or multiple A and B and the sequence of forming after C is in parallel, and still, the columns of parallel connection exceeds with the current maxima that export on not super enough this roads of total current on one road.For all LED brightness wherein of the same colour are kept evenly, the LED series limiting resistor of its every row keeps roughly consistent by the electric current that every row are passed through.
In the present embodiment, concrete connected mode is: form row by three LED serial connection current-limiting resistance 180 Europe, or forms row by two LED serial connection current-limiting resistance, 390 Europe, or forms one by LED serial connection current-limiting resistance 560 Europe and is listed as, each be listed as by and be connected on the way.
Because the power supply of the driving of LED display module is+12VDC, the forward voltage of highlighted white led lamps is+3VDC, the pressure drop that every road output of LED display driver chip TLC59116 consumes is 0.2VDC when output current is maximum, then by calculating the maximum current of each row of this moment:
The electric current of these row of current-limiting resistance place, 180 Europe is: (12-3*3-0.2) ÷ 180 ≈ 0.0156A;
The electric current of these row of current-limiting resistance place, 390 Europe is: (12-3*2-0.2) ÷ 390 ≈ 0.0149A;
The electric current of these row of current-limiting resistance place, 560 Europe is: (12-3-0.2) ÷ 560 ≈ 0.0157A;
More than the electric current difference of three row very little, can guarantee that these LED lamp brightness that list are roughly consistent.
The output of each road connects 4 row at most, its electric current and in the range of current that the every road of LED display driver chip TLC59116 can be born.
Referring to Fig. 4, for showing control timing figure.By reference LED display driver chip TLC59116 data, the communications protocol of the LED display driver chip TLC59116 of the single-chip microcomputer 78F0511A of indicative control unit backlight and display driver backlight unit is made up of two parts, the one, show the information that initialization is provided with to LED display driver chip TLC59116, another part is exactly the every road output of a LED display driver chip TLC59116 PWM value information.After showing that initialization is finished for LED display driver chip TLC59116, the PWM value information of every road output of sending thereafter is just effective.
Every the 2ms communication once, send one tunnel PWM value information in the utility model, always have ten the tunnel, the time cycle that all outputs are finished once is 20ms.Because of time of communication each time longer, during each communication, show that initialization information can not send together with the PWM value information.
But, the information that shows the initialization setting cannot only be sent when communication begins once, send the PWM value information later on always, its reason is: prove by experiment, if because external interference causes the instantaneous interruption of communication, do not show the information that initialization is provided with if bother to see me out after communication recovers, the PWM value information of sending is invalid, be reflected to showing as on the display effect: single-chip microcomputer can not effectively be controlled the effect of LED display module, and the LED display module rests on the preceding state of communicating interrupt always.Therefore, it is necessary in time transmitting the information that shows the initialization setting, and the frequency of its conveying is decided to be 2s once by experiment in the utility model, to guarantee that communication can in time recover under the interruption situation.
Idiographic flow is:
Step 1: beginning changes step 2 over to;
Is step 2:2ms timing arrived? in this way, change step 3 over to,, change step 7 over to as not;
Is step 3:2s timing arrived? in this way, change step 4 over to,, change step 8 over to as not;
Step 4: send the demonstration initialization command, once send one, change step 5 over to;
Has step 5: order sent seven? in this way, change step 6 over to,, change step 7 over to as not;
Step 6: the demonstration initialization is finished, and changes step 7 over to;
Step 7: return;
Step 8: send every road brightness data, once send one tunnel;
Has step 9: order sent ten the road? in this way, change step 10 over to,, change step 7 over to as not;
Step 10: every road brightness data has sent, and once shows and finishes, and changes step 7 over to.
Referring to Fig. 5-Fig. 7, be the schematic appearance of three LED display modules, these LED display modules are installed in the back of the light penetrating panel of air conditioner, when the LED display module is lighted, light in design zone corresponding on the light penetrating panel, and brightness can change at any time, presents variation effect.
Light penetrating panel in the present embodiment can adopt face glass, light-passing plastic or transparent plastic.
Claims (8)
1. LED-backlit display control apparatus, comprise the LED display module, it is characterized in that also comprising the indicative control unit backlight (100) that is used to handle the control data of input and produce control signal corresponding, drive the display driver backlight unit (200) of display module backlight (300) according to the above-mentioned control signal that produces, display module backlight is made up of more than one LED display module.
2. LED-backlit display control apparatus according to claim 1 is characterized in that constituting communications protocol by clock line and data line between described indicative control unit backlight (100) and the display driver backlight unit (200) is connected.
3. LED-backlit display control apparatus according to claim 1 and 2 is characterized in that described indicative control unit backlight (100) comprises single-chip microcomputer 78F0511A.
4. LED-backlit display control apparatus according to claim 1 and 2 is characterized in that described display driver backlight unit (200) comprises LED display driver chip TLC59116.
5. LED-backlit display control apparatus according to claim 4 is characterized in that there is one to 10 six tunnel output described display driver backlight unit (200).
6. LED-backlit display control apparatus according to claim 1 is characterized in that a LED series limiting resistor in the described LED display module becomes row, two LED series limiting resistor to become row or three LED series limiting resistor to become row.
7. LED-backlit display control apparatus according to claim 6 is characterized in that being provided with in the described LED display module white sheet-shaped LED, yellow sheet-shaped LED, orange sheet-shaped LED, green sheet-shaped LED, red sheet-shaped LED or blue sheet-shaped LED.
8. air conditioner, comprise light penetrating panel, it is characterized in that also comprising the indicative control unit backlight (100) that is used to handle the control data of input and produce control signal corresponding, the display driver backlight unit (200) that is used for driving LED display module backlight according to the control signal that produces, by the display module backlight (300) that more than one LED display module is formed, display module backlight is arranged on the back of light penetrating panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201483355U CN201638533U (en) | 2010-03-25 | 2010-03-25 | LED backlight display control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201483355U CN201638533U (en) | 2010-03-25 | 2010-03-25 | LED backlight display control equipment |
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| CN201638533U true CN201638533U (en) | 2010-11-17 |
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| CN2010201483355U Expired - Lifetime CN201638533U (en) | 2010-03-25 | 2010-03-25 | LED backlight display control equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737601A (en) * | 2012-06-21 | 2012-10-17 | 深圳市华星光电技术有限公司 | Light emitting diode (LED) backlight driving circuit, liquid crystal display device and manufacturing method |
| WO2014117417A1 (en) * | 2013-01-29 | 2014-08-07 | 深圳市华星光电技术有限公司 | Led backlight drive circuit and liquid crystal display |
| CN105607343A (en) * | 2016-03-14 | 2016-05-25 | 深圳市励研科技有限公司 | Liquid crystal display (LCD) |
| CN111163566A (en) * | 2020-02-26 | 2020-05-15 | 广东轻工职业技术学院 | Combined 3D RGB LED light cube device with adjustable brightness and chromaticity and control method |
-
2010
- 2010-03-25 CN CN2010201483355U patent/CN201638533U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737601A (en) * | 2012-06-21 | 2012-10-17 | 深圳市华星光电技术有限公司 | Light emitting diode (LED) backlight driving circuit, liquid crystal display device and manufacturing method |
| WO2013189093A1 (en) * | 2012-06-21 | 2013-12-27 | 深圳市华星光电技术有限公司 | Led backlight drive circuit, liquid crystal display device, and manufacturing method |
| WO2014117417A1 (en) * | 2013-01-29 | 2014-08-07 | 深圳市华星光电技术有限公司 | Led backlight drive circuit and liquid crystal display |
| GB2524219A (en) * | 2013-01-29 | 2015-09-16 | Shenzhen China Star Optoelect | LED backlight drive circuit and liquid crystal display |
| GB2524219B (en) * | 2013-01-29 | 2019-09-11 | Shenzhen China Star Optoelect | LED backlight drive circuit and liquid crystal display |
| CN105607343A (en) * | 2016-03-14 | 2016-05-25 | 深圳市励研科技有限公司 | Liquid crystal display (LCD) |
| CN111163566A (en) * | 2020-02-26 | 2020-05-15 | 广东轻工职业技术学院 | Combined 3D RGB LED light cube device with adjustable brightness and chromaticity and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHU REFRIGERATING EQUIPMENT CO., LTD. OF GUANGDON Free format text: FORMER OWNER: MEIDI ELECTRIC APPLIANCES CO., LTD., GUANGDONG Effective date: 20110328 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528300 PENGLAI ROAD, BEIJIAO TOWN, SHUNDE DISTRICT, FOSHAN CITY, GUANGDONG PROVINCE TO: 241009 WUHU MIDEA INDUSTRIAL PARK, NO. 31, FENGMINGHU ROAD, WUHU CITY, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110328 Address after: 241009 Anhui province Wuhu City Fengming Lake Road No. 31 Wuhu Industrial Park Patentee after: Wuhu Refrigeration Equipment Co., Ltd. of Guangdong Midea Group Address before: 528300 Penglai Road, Beijiao Town, Shunde District, Guangdong, Foshan Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |