CN204634100U - A kind of OLED circuit of self adaptation light modulation - Google Patents
A kind of OLED circuit of self adaptation light modulation Download PDFInfo
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- CN204634100U CN204634100U CN201520270680.9U CN201520270680U CN204634100U CN 204634100 U CN204634100 U CN 204634100U CN 201520270680 U CN201520270680 U CN 201520270680U CN 204634100 U CN204634100 U CN 204634100U
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- oled
- circuit
- light modulation
- resistance
- self adaptation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses a kind of OLED circuit of self adaptation light modulation, comprise the controller, drive circuit and the OLED that connect successively, described controller output pwm signal is to drive circuit, illuminance monitoring device is connected with between described OLED and the input of controller, it adopts closed-loop control, Automatic adjusument is realized to the brightness of OLED, energy-conservation.
Description
Technical field
The utility model relates to OLED control circuit field, more particularly, relates to a kind of OLED circuit of self adaptation light modulation.
Background technology
OLED and Organic Light Emitting Diode, basic structure is by the indium tin oxide of a thin and transparent tool characteristic of semiconductor, is connected, adds another metallic cathode, be bundled into the structure as sandwich with the positive pole of electric power.Include in total layer: hole transmission layer (HTL), luminescent layer (EL) and electron transfer layer (ETL).When supplying power to appropriate voltage, positive pole hole and negative electrode electric charge will combine in luminescent layer, produce light, produce red, green and blue RGB three primary colors, form basic color according to its formula is different.The characteristic of OLED is that therefore visibility and brightness are all high in oneself luminescence, is secondly that voltage requirements is low and power saving efficiency is high, and add that reaction is fast, lightweight, thickness is thin, simple structure, cost is low, is regarded as one of product of 21 century most future.
Existing OLED circuit, it adopts the control signal of controller that drive circuit is driven OLED, but regardless of daytime or night, the brightness constancy of OLED, under dim environment, brightness is too high not only bad to human eye, and power consumption is large.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of OLED circuit of self adaptation light modulation, and it adopts closed-loop control, realizes Automatic adjusument to the brightness of OLED, energy-conservation.
The technical scheme in the invention for solving the above technical problem is:
An OLED circuit for self adaptation light modulation, comprises the controller, drive circuit and the OLED that connect successively, and described controller output pwm signal, to drive circuit, is connected with illuminance monitoring device between described OLED and the input of controller.
The utility model improves on the basis of existing technology, is connected illuminance monitoring device and realizes closed-loop control between OLED and the input of controller, realizes indoor permanent illumination light modulation; Controller output pwm signal is to drive circuit, and utilize the electric current of the mode of pulse modulation light modulation to OLED to regulate, it has advantages such as colour cast can not occurring, light modulation precision is high, dimming scope is wide, do not glimmer, strengthens the illumination performance of OLED.The brightness of illuminance monitoring device to indoor is monitored and sends testing result to controller; controller regulates according to the brightness of room brilliancy to OLED, realizes self adaptation light modulation, under avoiding dim condition; the too high waste caused of OLED lamp brightness, and realize the protection to eyesight.
As preferably, described controller and illuminance monitoring device are all connected with voltage stabilizing circuit, the input of described voltage stabilizing circuit is connected on capacitance-resistance power supply circuits.Utilize voltage stabilizing circuit to carry out voltage stabilizing to controller power supply, ensure the stable operation of controller, also effectively improve the stability of OLED.
Further, described drive circuit comprises chip NCL30160, the CS pin of described chip NCL30160 is connected with the 3rd resistance of ground connection, the ROT pin of chip NCL30160 is connected with the first resistance be in series and the first electric capacity, the not common end ground connection of the first described electric capacity, the VCC pin of chip NCL30160 is connected on the first resistance and the first electric capacity common port, the VIN pin of described chip NCL30160 is connected with the second electric capacity of ground connection, the LX pin of chip NCL30160 is connected with inductance and is connected with the positive pole of diode by the 4th resistance, the negative pole of described diode is connected on VIN pin.The drive circuit of this programme adopts chip NCL30160, and it is a constant-flow driver, and energy consumption is low, volume is little, can reduce space and cost to greatest extent
Further, in order to improve the reliability of circuit, the first described resistor in parallel has the second resistance.
As preferably, described illuminance monitoring device is TSL2561.TSL2561 is the luminous intensity digital translation chip of a high speed, low-power consumption, wide-range, utilizes this chip can provide better brightness and reduce power supply power consumption.It has extra small encapsulation, brings burden can not to the encapsulation of circuit.
To sum up, the beneficial effects of the utility model are:
1, the utility model is connected illuminance monitoring device and realizes closed-loop control between OLED and the input of controller, realizes indoor permanent illumination light modulation, under avoiding dim condition, and the too high waste caused of OLED lamp brightness, and realize the protection to eyesight.
2, the utility model utilizes the electric current of the mode of pulse modulation light modulation to OLED to regulate, and adopts the mode of pulse modulation light modulation to have advantages such as colour cast can not occurring, light modulation precision is high, dimming scope is wide, do not glimmer, strengthens the illumination performance of OLED.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is the schematic diagram of drive circuit of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment 1:
The OLED circuit of a kind of self adaptation light modulation as shown in Figure 1, comprises the controller, drive circuit and the OLED that connect successively, and described controller output pwm signal, to drive circuit, is connected with illuminance monitoring device between described OLED and the input of controller.
Embodiment 2:
The OLED circuit of a kind of self adaptation light modulation as shown in Figure 1, the present embodiment is optimized on the basis of above-described embodiment, namely described controller and illuminance monitoring device are all connected with voltage stabilizing circuit, and the input of described voltage stabilizing circuit is connected on capacitance-resistance power supply circuits.
Embodiment 3:
The OLED circuit of a kind of self adaptation light modulation as depicted in figs. 1 and 2, the present embodiment is optimized drive circuit on the basis of above-described embodiment, namely described drive circuit comprises chip NCL30160, the CS pin of described chip NCL30160 is connected with the 3rd resistance of ground connection, the ROT pin of chip NCL30160 is connected with the first resistance be in series and the first electric capacity, the not common end ground connection of the first described electric capacity, the VCC pin of chip NCL30160 is connected on the first resistance and the first electric capacity common port, the VIN pin of described chip NCL30160 is connected with the second electric capacity of ground connection, the LX pin of chip NCL30160 is connected with inductance and is connected with the positive pole of diode by the 4th resistance, the negative pole of described diode is connected on VIN pin.
The first described resistor in parallel has the second resistance.
Described illuminance monitoring device is TSL2561.
As mentioned above, the utility model can be realized preferably.
Claims (4)
1. the OLED circuit of a self adaptation light modulation, comprise the controller, drive circuit and the OLED that connect successively, it is characterized in that: described controller output pwm signal is to drive circuit, illuminance monitoring device is connected with between described OLED and the input of controller, described controller and illuminance monitoring device are all connected with voltage stabilizing circuit, and the input of described voltage stabilizing circuit is connected on capacitance-resistance power supply circuits.
2. the OLED circuit of a kind of self adaptation light modulation according to claim 1, it is characterized in that: described drive circuit comprises chip NCL30160, the CS pin of described chip NCL30160 is connected with the 3rd resistance of ground connection, the ROT pin of chip NCL30160 is connected with the first resistance be in series and the first electric capacity, the not common end ground connection of the first described electric capacity, the VCC pin of chip NCL30160 is connected on the first resistance and the first electric capacity common port, the VIN pin of described chip NCL30160 is connected with the second electric capacity of ground connection, the LX pin of chip NCL30160 is connected with inductance and is connected with the positive pole of diode by the 4th resistance, the negative pole of described diode is connected on VIN pin.
3. the OLED circuit of a kind of self adaptation light modulation according to claim 2, is characterized in that: the first described resistor in parallel has the second resistance.
4. the OLED circuit of a kind of self adaptation light modulation according to claim 1, is characterized in that: described illuminance monitoring device is TSL2561.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520270680.9U CN204634100U (en) | 2015-04-30 | 2015-04-30 | A kind of OLED circuit of self adaptation light modulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520270680.9U CN204634100U (en) | 2015-04-30 | 2015-04-30 | A kind of OLED circuit of self adaptation light modulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204634100U true CN204634100U (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520270680.9U Expired - Fee Related CN204634100U (en) | 2015-04-30 | 2015-04-30 | A kind of OLED circuit of self adaptation light modulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204634100U (en) |
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2015
- 2015-04-30 CN CN201520270680.9U patent/CN204634100U/en not_active Expired - Fee Related
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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: 20150909 Termination date: 20160430 |