CN103021337A - Light-emitting diode (LED) display device with brightness adjusting device - Google Patents
Light-emitting diode (LED) display device with brightness adjusting device Download PDFInfo
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- CN103021337A CN103021337A CN2012105594929A CN201210559492A CN103021337A CN 103021337 A CN103021337 A CN 103021337A CN 2012105594929 A CN2012105594929 A CN 2012105594929A CN 201210559492 A CN201210559492 A CN 201210559492A CN 103021337 A CN103021337 A CN 103021337A
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Abstract
An LED display device with a brightness adjusting device comprises a backlight driving unit and an LED backlight unit, wherein the backlight driving unit is used for transmitting LED driving signals to the LED backlight unit, and the LED backlight unit emits light of the corresponding light intensity according to LED driving signals received from the backlight driving unit. An ambient light sensing unit is used for outputting indicating signals representing the light intensity to a control unit according to the light intensity of ambient light; the control unit is used for transmitting driving indicating signals to the backlight driving unit according to indicating signals received from the ambient light sensing unit; and the backlight driving unit is used for transmitting LED driving signals to the LED backlight unit according to driving indicating signals received from the control unit. The LED backlight unit emits the light of the corresponding light intensity according to LED driving signals received from the backlight driving unit. A mode selection unit is used for transmitting mode selection signals to the control unit, so that the control unit determines whether to start the ambient light sensing unit according to mode selection signals.
Description
Technical field
The present invention relates to LED and show the field, more particularly, the present invention relates to a kind of LED display device that disposes brightness regulating apparatus.
Background technology
LED (Light Emitting Diode) is a kind of solid-state semiconductor devices, and it can be electric energy conversion luminous energy directly.The heart of LED is a semiconductor wafer, and an end of semiconductor wafer is attached on the support (as negative pole), and the other end of semiconductor wafer connects the positive pole of power supply, and whole wafer is got up by epoxy encapsulation.
Semiconductor wafer is comprised of two parts, and a part is P-type semiconductor, occupies an leading position in its hole, the inside, and the other end of semiconductor wafer is N-type semiconductor, mainly is electronics here.When these two kinds of semiconductors couple together, just form one " P-N knot " between them.
When electric current acted on this wafer by wire, electronics will be pushed to the P district, and then electronics will send energy with the form of photon, the luminous principle of LED that Here it is with hole-recombination in the P district.And light wavelength determines the color of light, determines by forming P-N knot material.
The LED display of utilizing LED to make has been widely used in every field.
But under the condition of intense light irradiation (surround lighting is stronger), if the screen intensity of LED display is darker, spectators may cannot see the content in the display screen; And under the condition of the low light level according to (surround lighting is weak), if the screen intensity of LED display is too bright, can produce strong impulse to spectators' eyes.
Even the adjustable LED display of configuration brightness, or have the problem that needs the brightness of manual adjustments LED display, and have the problem that can not in time regulate LED display brightness according to the environment light intensity.
Summary of the invention
Technical matters to be solved by this invention is for having defects in the prior art, a kind of LED display device that disposes brightness regulating apparatus that can automatically regulate LED display brightness according to the environment light intensity being provided.
According to the present invention, a kind of LED display device that disposes brightness regulating apparatus is provided, it comprises: backlight driving unit and LED-backlit unit; Wherein, backlight driving unit is used for driving signal to LED-backlit unit transmission LED; The LED-backlit unit drives the light that signal sends corresponding light intensity according to the LED that receives from backlight driving unit.
Preferably, the described LED display device that disposes brightness regulating apparatus also comprises: sensing environment light unit, control module and mode selecting unit; Wherein, the sensing environment light unit is used for representing to control module output according to the intensity of illumination of surround lighting the indicator signal of intensity of illumination; Control module is used for sending the driving indicator signal according to the indicator signal that receives from the sensing environment light unit to backlight driving unit; Backlight driving unit is used for sending LED to the LED-backlit unit according to the driving indicator signal that receives from control module and drives signal; The LED-backlit unit drives the light that signal sends corresponding light intensity according to the LED that receives from backlight driving unit; Mode selecting unit is used for selecting signal to the control module sending mode, thereby control module determines whether to start the sensing environment light unit according to mode select signal; And wherein, the sensing environment light unit comprises the first OPTICAL SENSORS, the second OPTICAL SENSORS, the 3rd OPTICAL SENSORS, the 4th OPTICAL SENSORS and processing unit; Wherein, the first OPTICAL SENSORS, the second OPTICAL SENSORS, the 3rd OPTICAL SENSORS and the 4th OPTICAL SENSORS be sense ambient light respectively, and will represent that respectively the first light intensity signal, the second light intensity signal, the 3rd light intensity signal and the 4th light intensity signal of intensity of illumination pass to processing unit; Processing unit is averaging the first light intensity signal, the second light intensity signal, the 3rd light intensity signal and the 4th light intensity signal, thereby obtains to the indicator signal of the expression intensity of illumination of control module output.
Preferably, the first OPTICAL SENSORS, the second OPTICAL SENSORS, the 3rd OPTICAL SENSORS and the 4th OPTICAL SENSORS are arranged to be in same surface of shell with the display surface of LED display.
Preferably, the first OPTICAL SENSORS, the second OPTICAL SENSORS, the 3rd OPTICAL SENSORS and the 4th OPTICAL SENSORS are arranged in four corner location of described same surface of shell.
Preferably, mode selecting unit is selected signal to control module 2 sending modes according to user's input.
Thus, the invention provides a kind of LED display device that disposes brightness regulating apparatus that can automatically regulate LED display brightness according to the environment light intensity.
Description of drawings
By reference to the accompanying drawings, and by with reference to following detailed description, will more easily to the present invention more complete understanding be arranged and more easily understand its advantage of following and feature, wherein:
Fig. 1 schematically shows the functional block diagram according to the LED display device that disposes brightness regulating apparatus of the embodiment of the invention.
Fig. 2 schematically shows the functional block diagram according to the sensing environment light unit of the LED display device that disposes brightness regulating apparatus of the embodiment of the invention.
Fig. 3 schematically shows the arrangement according to the sensing environment light unit of the LED display device that disposes brightness regulating apparatus of the embodiment of the invention.
Need to prove, accompanying drawing is used for explanation the present invention, and unrestricted the present invention.Note, the accompanying drawing of expression structure may not be to draw in proportion.And in the accompanying drawing, identical or similar element indicates identical or similar label.
Embodiment
In order to make content of the present invention more clear and understandable, below in conjunction with specific embodiments and the drawings content of the present invention is described in detail.
Fig. 1 schematically shows the functional block diagram according to the LED display device that disposes brightness regulating apparatus of the embodiment of the invention.
Specifically, as shown in Figure 1, comprise according to the LED display device that disposes brightness regulating apparatus of the embodiment of the invention: sensing environment light unit 1, control module 2, backlight driving unit 3, LED-backlit unit 4 and mode selecting unit 5.
Wherein, mode selecting unit 5 can be preferred.
Wherein, sensing environment light unit 1 is used for representing to control module 2 outputs according to the intensity of illumination of surround lighting the indicator signal of intensities of illumination.
Control module 2 is used for sending the driving indicator signal according to the indicator signal that receives from sensing environment light unit 1 to backlight driving unit 3.
Backlight driving unit 3 is for 4 transmission LED drive signals to the LED-backlit unit according to the driving indicator signal that receives from control module 2.
LED-backlit unit 4 drives the light that signal sends corresponding light intensity according to the LED that receives from backlight driving unit 3.
Mode selecting unit 5 is used for selecting signal to control module 2 sending modes, thereby control module 2 determines whether to start sensing environment light unit 1 according to mode select signal.For example, mode selecting unit 5 can be come according to user's input to select signal to control module 2 sending modes.
Fig. 2 schematically shows the functional block diagram according to the sensing environment light unit 1 of the LED display device that disposes brightness regulating apparatus of the embodiment of the invention.
Specifically, as shown in Figure 3, sensing environment light unit 1 comprises the first OPTICAL SENSORS 11, the second OPTICAL SENSORS 12, the 3rd OPTICAL SENSORS 13 and the 4th OPTICAL SENSORS 14.
Fig. 3 schematically shows the arrangement according to the sensing environment light unit of the LED display device that disposes brightness regulating apparatus of the embodiment of the invention.
Specifically, as shown in Figure 3, sensing environment light unit 1 comprises and is arranged in the first OPTICAL SENSORS 11, the second OPTICAL SENSORS 12, the 3rd OPTICAL SENSORS 13 and the 4th OPTICAL SENSORS 14 that is in same surface of shell with the display surface A2 of LED display.
And preferably, the first OPTICAL SENSORS 11, the second OPTICAL SENSORS 12, the 3rd OPTICAL SENSORS 13 and the 4th OPTICAL SENSORS 14 are arranged in four corner location of described same surface of shell.
And, as shown in Figure 2, sensing environment light unit 1 also comprises processing unit 10, wherein, the first OPTICAL SENSORS 11, the second OPTICAL SENSORS 12, the 3rd OPTICAL SENSORS 13 and the 4th OPTICAL SENSORS 14 be sense ambient light respectively, and will represent that respectively the first light intensity signal, the second light intensity signal, the 3rd light intensity signal and the 4th light intensity signal of intensity of illumination pass to processing unit 10.
10 pairs of the first light intensity signals of processing unit, the second light intensity signal, the 3rd light intensity signal and the 4th light intensity signal are averaging, thereby obtain to the indicator signal of the expression intensity of illumination of control module 2 outputs.
Thus, the embodiment of the invention provides a kind of LED display device that disposes brightness regulating apparatus that can automatically regulate LED display brightness according to the environment light intensity.
In addition, need to prove, unless otherwise indicated, otherwise the term in the instructions " first ", " second ", " the 3rd " etc. describe each assembly of only being used for distinguishing instructions, element, step etc., rather than are used for logical relation between each assembly of expression, element, the step or ordinal relation etc.
Be understandable that, although the present invention with the preferred embodiment disclosure as above, yet above-described embodiment is not to limit the present invention.For any those of ordinary skill in the art, do not breaking away from the technical solution of the present invention scope situation, all can utilize the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention according to any simple modification, equivalent variations and the modification that technical spirit of the present invention is done above embodiment, all still belongs in the scope of technical solution of the present invention protection.
Claims (5)
1. a LED display device that disposes brightness regulating apparatus is characterized in that comprising: backlight driving unit and LED-backlit unit; Wherein, backlight driving unit is used for driving signal to LED-backlit unit transmission LED; The LED-backlit unit drives the light that signal sends corresponding light intensity according to the LED that receives from backlight driving unit.
2. the LED display device that disposes brightness regulating apparatus according to claim 1 characterized by further comprising: sensing environment light unit, control module and mode selecting unit;
Wherein, the sensing environment light unit is used for representing to control module output according to the intensity of illumination of surround lighting the indicator signal of intensity of illumination;
Control module is used for sending the driving indicator signal according to the indicator signal that receives from the sensing environment light unit to backlight driving unit;
Backlight driving unit is used for sending LED to the LED-backlit unit according to the driving indicator signal that receives from control module and drives signal;
The LED-backlit unit drives the light that signal sends corresponding light intensity according to the LED that receives from backlight driving unit;
Mode selecting unit is used for selecting signal to the control module sending mode, thereby control module determines whether to start the sensing environment light unit according to mode select signal;
And wherein, the sensing environment light unit comprises the first OPTICAL SENSORS, the second OPTICAL SENSORS, the 3rd OPTICAL SENSORS, the 4th OPTICAL SENSORS and processing unit;
Wherein, the first OPTICAL SENSORS, the second OPTICAL SENSORS, the 3rd OPTICAL SENSORS and the 4th OPTICAL SENSORS be sense ambient light respectively, and will represent that respectively the first light intensity signal, the second light intensity signal, the 3rd light intensity signal and the 4th light intensity signal of intensity of illumination pass to processing unit;
Processing unit is averaging the first light intensity signal, the second light intensity signal, the 3rd light intensity signal and the 4th light intensity signal, thereby obtains to the indicator signal of the expression intensity of illumination of control module output.
3. the LED display device that disposes brightness regulating apparatus according to claim 1 and 2, it is characterized in that, the first OPTICAL SENSORS, the second OPTICAL SENSORS, the 3rd OPTICAL SENSORS and the 4th OPTICAL SENSORS are arranged to be in same surface of shell with the display surface of LED display.
4. the LED display device that disposes brightness regulating apparatus according to claim 1 and 2, it is characterized in that, the first OPTICAL SENSORS, the second OPTICAL SENSORS, the 3rd OPTICAL SENSORS and the 4th OPTICAL SENSORS are arranged in four corner location of described same surface of shell.
5. the LED display device that disposes brightness regulating apparatus according to claim 1 and 2 is characterized in that, mode selecting unit is selected signal to control module 2 sending modes according to user's input.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105594929A CN103021337A (en) | 2012-12-20 | 2012-12-20 | Light-emitting diode (LED) display device with brightness adjusting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105594929A CN103021337A (en) | 2012-12-20 | 2012-12-20 | Light-emitting diode (LED) display device with brightness adjusting device |
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| CN2012105594929A Pending CN103021337A (en) | 2012-12-20 | 2012-12-20 | Light-emitting diode (LED) display device with brightness adjusting device |
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| CN103680425A (en) * | 2013-12-19 | 2014-03-26 | 合肥京东方光电科技有限公司 | Luminance control device of backlight source, backlight source and display device |
| CN104517585A (en) * | 2013-09-29 | 2015-04-15 | 联想(北京)有限公司 | Method and device for adjusting display screen |
| CN105791428A (en) * | 2016-04-22 | 2016-07-20 | 广东宜教通教育有限公司 | Method, device and system for controlling intelligent electronic screen |
| US9607571B2 (en) | 2013-08-07 | 2017-03-28 | Beijing Lenovo Software Ltd. | Information processing method and electronic device |
| CN107396038A (en) * | 2017-06-06 | 2017-11-24 | 余姚德诚科技咨询有限公司 | Adaptive LED warning lamp control system |
| CN108012395A (en) * | 2017-12-25 | 2018-05-08 | 苏州佳亿达电器有限公司 | The display screen regulating system of car electrics |
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| CN107396038A (en) * | 2017-06-06 | 2017-11-24 | 余姚德诚科技咨询有限公司 | Adaptive LED warning lamp control system |
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Application publication date: 20130403 |