CN107172742B - A kind of OLED lamp lighting control circuit - Google Patents
A kind of OLED lamp lighting control circuit Download PDFInfo
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- CN107172742B CN107172742B CN201710392271.XA CN201710392271A CN107172742B CN 107172742 B CN107172742 B CN 107172742B CN 201710392271 A CN201710392271 A CN 201710392271A CN 107172742 B CN107172742 B CN 107172742B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/60—Circuit arrangements for operating LEDs comprising organic material, e.g. for operating organic light-emitting diodes [OLED] or polymer light-emitting diodes [PLED]
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Electroluminescent Light Sources (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The present invention provides a kind of OLED lamp lighting control circuit, including microprocessor, first switch group, second switch group and several linear constant current modules；Each linear constant current module is corresponded with an OLED light source；The microprocessor is used to generate on-off control signal and brightness control signal according to the car light animation signal received；The on-off control signal that the first switch group is used to be sent according to the microprocessor generates the on-off switch signal of each OLED light source, to control the on-off of the OLED light source via linear constant current module corresponding with the OLED light source；The second switch group is used to generate the luminance switch signal of each OLED light source according to the brightness control signal that the microprocessor is sent, to control the brightness of the OLED light source via linear constant current module corresponding with the OLED light source.OLED lamp lighting control circuit of the invention realizes the Dynamically Announce effect of OLED light source, meets the various display demands of car light.
Description
Technical field
The present invention relates to the technical fields of control circuit, more particularly to a kind of OLED lamp lighting control circuit.
Background technique
Lamps and lanterns on car light, that is, vehicle are tool of the vehicle travel at night in road lighting, and issue various vehicle rows
Sail the prompt tool of signal.In general, car light includes headlamp, taillight, turn signal etc..
In the prior art, preferred light source of the LED as car rear, by the extensive and mature vapour applied to various functions
On vehicle signal lamp.LED is as point light source, when signal lamp applied to a certain function, generally requires plurality of LEDs to realize a function
Energy.In practical applications, it has the following deficiencies:
(1) illumination effect of plurality of LEDs is difficult not against being used cooperatively for good reflective optical system and lens
Reach good uniformity of luminance；
(2) due to the limitation of point light source light-emitting effect, it is difficult to realize what plurality of LEDs shone by LED light source control circuit
Dynamic effect cannot achieve expected visual effect.
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) is made using organic polymer materials
For semiconductor (semiconductor) material in light emitting diode, with following two big advantages:
(1) there is self luminous characteristic, do not need the support of any light-source system, and the thickness of OLED illuminant only has
1.4 millimeters, following car light even can be accomplished to be pasted onto parking stall as paster, without occupying additional space, in volume
On possess bigger advantage compared with common LED product；
(2) compared with the point light source of LED, OLED possesses area source and irreflexive feature, and light quality is uniformly, it can be achieved that stepless
Light modulation, will not project any shade, be very suitable to it for making automotive lamp product.
By being laid out arrangement to OLED light source, using its planar light source performance outstanding, OLED car light can be made
Source shows Dynamically Announce effect abundant, to compensate for the luminous inhomogeneities of existing LED car lamp, display effect well
Single disadvantage.Therefore, how to realize that the display control of OLED light source in car light becomes current urgent problem to be solved.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of OLED lamp lighting control circuit,
The Dynamically Announce effect for realizing OLED light source meets the various display demands of car light.
In order to achieve the above objects and other related objects, the present invention provides a kind of OLED lamp lighting control circuit, the OLED
Car light includes several OLED light sources, including microprocessor, first switch group, second switch group and several linear constant currents
Module；Each linear constant current module is corresponded with an OLED light source；The microprocessor is used for according to the car light received
Animation signal generates on-off control signal and brightness control signal；The first switch group and the microprocessor and the line
Property constant flow module be connected, the on-off for being sent according to microprocessor control signal generates each OLED light source
On-off switch signal, to control the on-off of the OLED light source via linear constant current module corresponding with the OLED light source；
The second switch group is connected with the microprocessor and the linear constant current module, for being sent according to the microprocessor
The brightness control signal come generates the luminance switch signal of each OLED light source, via corresponding with the OLED light source
Linear constant current module control the brightness of the OLED light source.
In one embodiment of the invention, the microprocessor uses single-chip microcontroller.
It further include power module in one embodiment of the invention, the power module is used for as the microprocessor and institute
State linear constant current module for power supply.
Further include anti-reverse module in one embodiment of the invention, the output end of the power module be set, and with institute
Micro treatment module is stated to be connected with the linear constant current module.
In one embodiment of the invention, the anti-reverse module uses counnter attack diode.
Further include Voltage stabilizing module in one embodiment of the invention, the output end of the power module is set, is used for as institute
It states microprocessor and/or the linear constant current module provides required regulated power supply.
In one embodiment of the invention, the brightness control signal uses pwm signal, and accounting for according to the pwm signal
Brightness of the sky than controlling the OLED light source.
In one embodiment of the invention, the on-off control signal uses I/O signal.
In one embodiment of the invention, several described OLED light sources are divided into several screen body chunkings, each screen body chunking
The corresponding linear constant current module of the OLED light source for including forms linear constant current mould group, and each linear constant current mould group is opened with described first
It closes group to be connected, the on-off switch signal of each screen body chunking for being generated according to the first switch group controls each screen
The on-off of all OLED light sources in body chunking.
In one embodiment of the invention, several described screen body chunkings are in upper and lower symmetrical, each screen body chunking
The OLED light source of identical quantity comprising longitudinal arrangement；The brightness control signal includes row brightness control signal and column brightness control
Signal processed.
As described above, OLED lamp lighting control circuit of the invention, has the advantages that
(1) by the combination of the switch control signal of negligible amounts, to control the on-off of different switching tubes, to reach OLED
The how variational dynamic effect of light source；
(2) processing and each control for switching group by microprocessor to an animation signal line, it is different dynamic to reach
It draws signal and generates different OLED light source dynamic effects；
(3) car light is made still to can achieve outstanding shine under the cooperation of not lens using the characteristic of OLED light source
Uniformity；
(4) feature small using OLED light source electric current, can be directly used the circuit control mode of linear constant current to OLED
Light source is powered, and reduces circuit cost, high practicability.
Detailed description of the invention
Fig. 1 is shown as the circuit theory schematic diagram of OLED lamp lighting control circuit of the invention；
Fig. 2 is shown as OLED lamp lighting control circuit of the invention in the structural schematic diagram of an embodiment；
Fig. 3 is shown as OLED screen body of the invention in the layout structure figure of an embodiment；
Fig. 4 is shown as OLED screen body of the invention in the illumination effect schematic diagram of an embodiment；
Fig. 5 is shown as OLED screen body of the invention in the illumination effect schematic diagram of another embodiment；
Fig. 6 is shown as OLED screen body of the invention in the illumination effect schematic diagram of another embodiment.
Component label instructions
1 microprocessor
2 first switch groups
3 second switch groups
4 linear constant current modules
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification to be taken off
The content shown is not intended to limit the invention enforceable qualifications so that those skilled in the art understands and reads, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the present invention
Under the effect of can be generated and the purpose that can reach, it should all still fall in disclosed technology contents and obtain the model that can cover
In enclosing.Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, be also only
Convenient for being illustrated for narration, rather than to limit the scope of the invention, relativeness is altered or modified, in no essence
It changes under technology contents, when being also considered as the enforceable scope of the present invention.
OLED lamp lighting control circuit of the invention can be realized the Dynamically Announce effect of OLED light source, meet the various of car light
Display demand, wherein OLED car light includes several OLED light sources.
As shown in Figure 1, OLED lamp lighting control circuit of the invention includes microprocessor 1, first switch group 2, second opens
Close group 3 and several linear constant current modules 4；An OLED light source one in each linear constant current module and OLED car light is a pair of
It answers.
Microprocessor 1 is used to generate on-off control signal and brightness control signal according to the car light animation signal received.
Wherein, car light animation signal is for indicating the dynamic effect that car light is shown.Microprocessor passes through to car light animation
Signal is parsed, and the control signal of each OLED light source needed for realizing the dynamic effect, including on-off control letter are generated
Number and brightness control signal.That is, realizing required move by the on-off control and brightness control of each OLED light source
State effect.
Preferably, microprocessor 1 uses single-chip microcontroller.
First switch group 2 is connected with microprocessor 1 and each linear constant current module 4, for being sent according to microprocessor 1
The on-off control signal come generates the on-off switch signal of each OLED light source, via corresponding with the OLED light source
Linear constant current module control the on-off of the OLED light source.
Wherein, first switch group 2 includes several switches, and each switch is a pair of with each linear constant current module one respectively
It should connect, to control the on-off of OLED light source corresponding with the linear constant current module by each linear constant current module.Specifically,
First switch group 2 controls signal according to the on-off received, generates the on-off switch signal of each OLED light source, passes through
The on-off switch signal controls corresponding switch, and realizes the logical of corresponding OLED light source via corresponding linear constant current module
It is disconnected.
Second switch group 3 is connected with microprocessor 1 and linear constant current module 2, for what is sent according to microprocessor 1
The brightness control signal generates the luminance switch signal of each OLED light source, via line corresponding with the OLED light source
Property constant flow module controls the brightness of the OLED light source.
Wherein, second switch group 3 includes several switches, and each switch is a pair of with each linear constant current module one respectively
It should connect, to control the brightness of OLED light source corresponding with the linear constant current module by each linear constant current module.Specifically,
Second switch group 3 generates the luminance switch signal of each OLED light source, passes through according to the brightness control signal received
The luminance switch signal controls corresponding switch, and controls the bright of corresponding OLED light source via corresponding linear constant current module
Degree.
It further include power module (not shown) in one embodiment of the invention, power module is used to be microprocessor
With each linear constant current module for power supply.
Further include anti-reverse module in one embodiment of the invention, the output end of the power module be set, and with institute
Micro treatment module is stated to be connected with the linear constant current module.Specifically, can be arranged between power module and micro treatment module
There is anti-reverse module, is provided with anti-reverse module between power module and linear constant current module.It is of course also possible in power supply mould
An anti-reverse module is arranged in the output end of block, and the output end of the anti-reverse module is respectively connected to micro treatment module and line
Property constant flow module.
Preferably, the anti-reverse module uses counnter attack diode.
Further include Voltage stabilizing module in one embodiment of the invention, the output end of the power module is set, is used for as institute
It states microprocessor and/or the linear constant current module provides required regulated power supply.To those skilled in the art, pressure stabilizing
Module is the mature prior art, therefore details are not described herein.
In one embodiment of the invention, the brightness control signal uses pwm signal, and accounting for according to the pwm signal
Luminous flux of the sky than controlling the OLED light source, the i.e. brightness of OLED light source；The on-off control signal uses I/O signal.Tool
Body, correspondence in first switch group is controlled by I/O signal and is switched on-off, controls second by the duty ratio of pwm signal
It switchs in group and the brightness of inductive switch is selected, thus on-off control signal (I/O signal) and brightness control signal (pwm signal)
Sequencing and two kinds of signals matched combined, realize OLED car light dynamic effect show.
In one embodiment of the invention, pwm signal can also be used as I/O signal come using.So, then it does not realize
OLED car light fade effect, only realizes the effect of successive on-off by modes such as timing.
It, will several described OLED light sources in the layout of the OLED light source of OLED car light in one embodiment of the invention
It is divided into several screen body chunkings, the corresponding linear constant current module of the OLED light source that each screen body chunking includes forms linear constant current mould
Group, each linear constant current mould group are connected with the first switch group, and each screen generated according to the first switch group
The on-off of all OLED light sources in the corresponding screen body chunking of on-off switch signal control of body chunking.By above structure, by OLED
The screen body of car light is divided into several screen body chunkings, and the corresponding linear constant current module of each screen body chunking is formed linear constant current
Mould group, and then first switch group only needs to be controlled for each linear constant current mould group, is directed to each screen body to realize
The on-off of chunking controls.In the display operation of actual OLED car light, OLED light source usually is carried out for a small region
Control, therefore above structure meets the needs of actual conditions, and simplifies the on-off control of OLED light source, it is only necessary to on-off switch all the way
Signal, i.e., controllable one shields the on-off of all OLED light sources in body chunking.
It further, in this embodiment, is in upper and lower symmetrical, each screen body by several described screen body chunkings
Chunking includes the OLED light source of the identical quantity of longitudinal arrangement, then all OLED light sources form ranks distribution.It is corresponding, it is described
Brightness control signal includes row brightness control signal and column brightness control signal.Pass through the row brightness control signal and column brightness control
Signal processed generates corresponding luminance switch signal in second switch group, so as to control oled light in terms of rows and columns
The brightness change in source meets the use demand of practical car light to realize that the dynamic effect of OLED car light is shown.
It should be noted that car light involved in the present invention includes headlamp, taillight, turn signal etc., can satisfy
The demand that various car light signals are shown.
OLED car light of the invention is elaborated below by specific embodiment.
As shown in Fig. 2, in this embodiment, OLED car light includes power module M1, input reverse-connection preventing circuit M2, source of stable pressure
M3, single-chip microcontroller M4, first switch group M5, second switch group M6 and linear constant current mould group M7 and M8.In this embodiment,
As shown in figure 3, OLED car light includes upper screen body and lower screen body two parts.Wherein upper screen body include N number of screen body chunking (1 on screen body,
Shield 2 on body ... N on .. screen body), each screen body chunking includes 3 OLED light sources of longitudinal arrangement, as (upper 1-A, upper 1-B and on
1-C), (upper 2-A, upper 2-B and upper 2-C), until (upper N-A, upper N-B and upper N-C).Lower screen body includes N number of screen body chunking (screen body
Lower 1, N under screen body 2 under screen body ...), each screen body chunking includes 3 OLED light sources of longitudinal arrangement, such as (lower 1-A, lower 1-B and
Lower 1-C), (lower 2-A, lower 2-B and lower 2-C), until (lower N-A, lower N-B and lower N-C).Therefore, OLED car light constitutes 6 row N column
OLED light source structure.It should be noted that the number for the OLED light source that each screen body chunking is included can be any amount
, according to the actual situation depending on.Accordingly, first switch group M5 is for sendaisle switching signal to linear constant current mould group M7
And M8, second switch group M6 are for sending luminance switch signal to each OLED light source.It is linear in linear constant current mould group M7
Constant flow module connects one to one with the OLED light source in upper screen body；Linear constant current module and lower screen in linear constant current mould group M8
OLED light source in body connects one to one.It should be noted that the screen body of OLED car light can be arbitrary shape, it is such as square
Shape, triangle, circle etc., it is not limited to the rectangle in the present embodiment.Similarly, the shape of each screen body chunking can also
To be arbitrary shape, the form being not limited in the present embodiment.
Specifically, power module M1 input value reverse-connection preventing circuit M2.Reverse-connection preventing circuit M2 includes two counnter attacks in parallel
Diode D1 and D2.Wherein the anode of power input counnter attack diode D1, electric current are flowed out from the cathode of counnter attack diode D1 all the way,
It is flow to linear constant current mould group M7 and M8, to power for linear constant current mould group M7 and M8, and then is realized to upper screen body and lower screen body
Power supply.The anode of another way power input counnter attack diode D2, electric current are flowed out from the cathode of counnter attack diode D2, flow to pressure stabilizing
Source provides power supply M3 to source of stable pressure to obtain required regulated power supply, output 5V or the 3.3V voltage of source of stable pressure M3 to single-chip microcontroller M4
Feeder ear, to realize power supply to single-chip microcontroller M4.
The signal input capture mouth for the single-chip microcontroller M4 that car light animation signal enters after counnter attack diode D3, single-chip microcontroller M4
The car light animation signal is parsed, via I/O mouthfuls and PWM mouthful respectively output as on-off control the I/O signal of signal with
Pwm signal as brightness control signal.Wherein, I/O signal is input to first switch group M5, to obtain corresponding linear permanent
Flow the corresponding on-off switch signal of mould group.Specifically, I/O signal is controlled corresponding to linear constant current mould group by output low and high level
Screen body chunking in each OLED light source on and off.Pwm signal inputs second switch group M6, to obtain corresponding each
The luminance switch signal of OLED light source.Specifically, pwm signal controls the bright of each OLED light source by the duty cycle signals exported
Dark fade effect.In this embodiment, pwm signal includes row brightness control signal PWM-A, PWM-B and PWM-C, is respectively used to
Control is identified as the brightness of each row OLED light source of A, B and C；It simultaneously include column brightness control signal PWM-1, PWM-2 ...
.PWM-N, it is respectively used to the brightness of control the 1st, the OLED light source that 2 ... ..N are arranged.
Specifically, the pwm signal PWMA control of single-chip microcontroller M4 output is identified as A (upper 1-A, upper 2-A, upper 3-
A ... ..., upper N-A, lower 1-A, lower 2-A, lower 3-A ... ..., lower N-A) OLED light source brightness；The second of single-chip microcontroller M4 output
A pwm signal PWMB control be identified as B (upper 1-B, upper 2-B, upper 3-B ... ..., upper N-B, lower 1-B, lower 2-B, lower 3-B ... ...,
Lower N-B) OLED light source brightness；The third pwm signal PWMC control of single-chip microcontroller M4 output is identified as C (upper 1-C, upper 2-
C, upper 3-C ... ..., upper N-C, lower 1-C, lower 2-C, lower 3-C ... ..., lower N-C) OLED light source brightness, by PWMA,
The duty ratio and sending time of tri- pwm signals of PWMB, PWMC control light source gradual change or dynamic of the OLED from inner ring to outer ring
Display effect.Single-chip microcontroller M4 output pwm signal PWM1 control Far Left 1 column (upper 1-A, upper 1-B, upper 1-C, lower 1-A,
Lower 1-B, lower 1-C) all OLED light sources brightness；The pwm signal PWM2 control left side the 2nd of single-chip microcontroller M4 output arranges
The brightness of all OLED light sources of (upper 2-A, upper 2-B, upper 2-C, lower 2-A, lower 2-B, lower 2-C)；..., single-chip microcontroller M4 output
All oled lights of one pwm signal PWMN control rightmost column (upper N-A, upper N-B, upper N-C, lower N-A, lower N-B, lower N-C)
The brightness in source.Single-chip microcontroller M4 output an I/O signal " on I/O " control the bright of OLED light source all in screen body on this and
It goes out；The on and off of all OLED light sources in the lower screen body of an I/O signal " under the I/O " control of single-chip microcontroller M4 output.
Therefore, in the embodiment, power supply power supply is done to OLED light source by linear constant current mould group M7 and M8, passes through single-chip microcontroller
After discrimination of the M4 to the car light animation signal of input, and corresponding logical process, make single-chip microcontroller M4 output I/O signal (height
Level signal) and pwm signal (duty ratio dim signal) to control the switch of first switch group M5 and second switch group M6,
The switch output of switch group and the light modulation of linear constant current mould group enable to power to OLED light source to control linear constant current mould group
On-off, to reach the Dynamically Announce effect of OLED.Wherein, the switch switched in group is generally made of triode or metal-oxide-semiconductor.
Illustrate that the dynamic effect of the OLED car light in the embodiment is shown in detail below.
As shown in figure 4, by it is upper " 1-A, upper 2-A, upper 3-A ... ..., upper N-A " and " lower 1-A, lower 2-A, lower 3-A ... ...,
Lower N-A " inner ring A as a whole；By upper " 1-B, upper 2-B, upper 3-B ... ..., upper N-B " and " lower 1-B, lower 2-B, lower 3-
B ... ..., lower N-B " centre circle B as a whole；By upper " 1-C, upper 2-C, upper 3-C ... ..., upper N-C " and " lower 1-C, lower 2-
C, lower 3-C ... ..., the outer ring lower N-C " C as a whole.Inner ring A, centre circle B and outer ring C are controlled by PWMA, PWMB,
The switching group of PWMC signal control, PWMA/PWMB/PWMC output duty cycle signal, such as 100% is tapered to from 10%,
To realize from inner ring A to the dynamic effect of outer ring C brightness gradual change.
As shown in figure 5, shielding body mould group 1 as a whole under on screen body 1 and screen body 1；It will shield 2 and under screen body 2 on body
Shield body mould group 2 as a whole；And so on, N under N on screen body and screen body is shielded into body mould group N as a whole.Extremely from a left side
1~N of right screen body mould group is controlled by PWM1, PWM2 ... ..., and the switching group of PWMN signal control, PWM1~PWMN output accounts for
Sky tapers to 100% than signal and sending time, such as from 10%, to realize that from left to right timing is lighted and bright
Spend the dynamic effect of gradual change.It is of course also possible to by PWM1, PWM2 ... ..., the low and high level of PWMN signal output controls the
Switch in two switch groups, with realize it is without gradual change, according to certain timing light effect.
As shown in fig. 6, by N shields as a whole in body mould group on 1~screen body on screen body；By N under 1~screen body under screen body
Shield under body mould group as a whole.It is controlled by screen body mould group and under screen body mould group on I/O and signal control under I/O
Switching group exports low and high level under I/O is upper and I/O, to realize the dynamic switched in turn in screen body mould group and under screen body mould group
Effect.
In conclusion the combination of OLED lamp lighting control circuit of the invention by the switch control signal of negligible amounts, comes
The on-off of different switching tubes is controlled, to reach the how variational dynamic effect of OLED light source；By microprocessor to an animation
The processing of signal wire and the control of each switch group, generate different OLED light source dynamic effects to reach different animation signals；Benefit
Car light is set still to can achieve outstanding uniformity of luminance under the cooperation of not lens with the characteristic of OLED light source；It utilizes
The small feature of OLED light source electric current, the circuit control mode that linear constant current can be directly used are powered OLED light source, drop
Low circuit cost, high practicability.So the present invention effectively overcomes various shortcoming in the prior art and has high industrial
Utility value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of OLED lamp lighting control circuit, the OLED car light includes several OLED light sources, it is characterised in that: including micro- place
Manage device, first switch group, second switch group and several linear constant current modules；Each linear constant current module and an OLED
Light source corresponds；
The microprocessor is used to generate on-off control signal and brightness control signal according to the car light animation signal received；
The first switch group is connected with the microprocessor and the linear constant current module, for according to the microprocessor
The on-off control signal sent generates the on-off switch signal of each OLED light source, with via with the OLED light source phase
Corresponding linear constant current module controls the on-off of the OLED light source；
The second switch group is connected with the microprocessor and the linear constant current module, for according to the microprocessor
The brightness control signal sent generates the luminance switch signal of each OLED light source, with via with the OLED light source phase
Corresponding linear constant current module controls the brightness of the OLED light source.
2. OLED lamp lighting control circuit according to claim 1, it is characterised in that: the microprocessor uses single-chip microcontroller.
3. OLED lamp lighting control circuit according to claim 1, it is characterised in that: it further include power module, the power supply
Module is used to be the microprocessor and the linear constant current module for power supply.
4. OLED lamp lighting control circuit according to claim 3, it is characterised in that: further include anti-reverse module, setting exists
The output end of the power module, and be connected with the microprocessor and the linear constant current module.
5. OLED lamp lighting control circuit according to claim 4, it is characterised in that: the anti-reverse module uses counnter attack two
Pole pipe.
6. OLED lamp lighting control circuit according to claim 3, it is characterised in that: further include Voltage stabilizing module, be arranged in institute
The output end for stating power module, for providing required regulated power supply for the microprocessor and/or the linear constant current module.
7. OLED lamp lighting control circuit according to claim 1, it is characterised in that: the brightness control signal uses PWM
Signal, and control according to the duty ratio of the pwm signal brightness of the OLED light source.
8. OLED lamp lighting control circuit according to claim 1, it is characterised in that: the on-off control signal uses I/O
Signal.
9. OLED lamp lighting control circuit according to claim 1, it is characterised in that: if several described OLED light sources are divided into
Dry screen body chunking, the corresponding linear constant current module of the OLED light source that each screen body chunking includes form linear constant current mould group, often
A linear constant current mould group is connected with the first switch group, each screen body group for being generated according to the first switch group
The on-off switch signal of block controls the on-off of all OLED light sources in each screen body chunking.
10. OLED lamp lighting control circuit according to claim 9, it is characterised in that: several described screen body chunkings are presented
Under it is symmetrical, each screen body chunking include longitudinal arrangement identical quantity OLED light source；The brightness control signal
Including row brightness control signal and column brightness control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710392271.XA CN107172742B (en) | 2017-05-27 | 2017-05-27 | A kind of OLED lamp lighting control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710392271.XA CN107172742B (en) | 2017-05-27 | 2017-05-27 | A kind of OLED lamp lighting control circuit |
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| Publication Number | Publication Date |
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| CN107172742A CN107172742A (en) | 2017-09-15 |
| CN107172742B true CN107172742B (en) | 2019-04-16 |
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| CN108382292A (en) * | 2018-04-17 | 2018-08-10 | 华域视觉科技(上海)有限公司 | The first car light controller of one kind, car lamp control system and vehicle light control method |
| CN109757011B (en) * | 2019-03-27 | 2024-05-24 | 华域视觉科技(上海)有限公司 | Universal spot lamp box |
| JP2022049513A (en) | 2020-09-16 | 2022-03-29 | 株式会社小糸製作所 | Vehicle lamp fitting and lamp control module |
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| JP2006164561A (en) * | 2004-12-02 | 2006-06-22 | Denso Corp | Manufacturing method for light emission control device, light emission control device and cabin light emission control system |
| TWI383346B (en) * | 2007-09-28 | 2013-01-21 | Chunghwa Picture Tubes Ltd | A light source driving circuit and controlling method thereof |
| JP2012066605A (en) * | 2010-09-21 | 2012-04-05 | Calsonic Kansei Corp | Lighting dimming device for vehicle |
| CN101996587B (en) * | 2010-11-03 | 2013-06-05 | 中航华东光电有限公司 | Color LED backlight frequency-control dimming circuit and method |
| CN103563487B (en) * | 2011-08-05 | 2016-01-06 | 三菱电机株式会社 | LED lamp device |
| CN104883794A (en) * | 2015-06-11 | 2015-09-02 | 固态照明张家口有限公司 | LED spotlight illumination control system based on WIFI module |
| JP6583775B2 (en) * | 2015-07-09 | 2019-10-02 | パナソニックＩｐマネジメント株式会社 | LIGHTING DEVICE, VEHICLE LIGHTING DEVICE, AND VEHICLE USING THE SAME |
| CN204994013U (en) * | 2015-10-09 | 2016-01-20 | 江苏新安电器有限公司 | Intelligence car light control system based on gesture recognition |
| CN207118018U (en) * | 2017-05-27 | 2018-03-16 | 上海小糸车灯有限公司 | A kind of OLED lamp lighting control circuits |
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Address after: 201800 Yecheng Road, Shanghai, No. 767, No. Patentee after: Hua Yu vision technology (Shanghai) Co., Ltd. Address before: 201800 Yecheng Road, Shanghai, No. 767, No. Patentee before: Xiaoxi Car Lights Co., Ltd., Shanghai |
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