CN107172742A - A kind of OLED lamp lighting control circuits - Google Patents
A kind of OLED lamp lighting control circuits Download PDFInfo
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- CN107172742A CN107172742A CN201710392271.XA CN201710392271A CN107172742A CN 107172742 A CN107172742 A CN 107172742A CN 201710392271 A CN201710392271 A CN 201710392271A CN 107172742 A CN107172742 A CN 107172742A
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- oled
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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 circuits, 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 for according to the car light animation signal generation break-make control signal and brightness control signal received；The first switch group is used for the on-off switch signal that the break-make control signal that is sent according to the microprocessor generates each OLED light source, to control the break-make of the OLED light source via the linear constant current module corresponding with the OLED light source；The second switch group is used for the luminance switch signal that the brightness control signal that is sent according to the microprocessor generates each OLED light source, to control the brightness of the OLED light source via the linear constant current module corresponding with the OLED light source.The OLED lamp lighting control circuits of the present invention realize the Dynamic Announce effect of OLED light source, meet the various display demands of car light.
Description
Technical field
The present invention relates to the technical field of control circuit, more particularly to a kind of OLED lamp lighting control circuits.
Background technology
Car light is the light fixture on vehicle, is instrument of the vehicle travel at night in road lighting, is also to send various vehicle rows
Sail the prompting instrument of signal.Generally, car light includes headlamp, taillight, steering indicating light etc..
In the prior art, LED as car rear preferred light source, by the extensive and ripe vapour applied to various functions
On car signal lamp.LED during signal lamp applied to a certain function, generally requires plurality of LEDs to realize a work(as spot light
Energy.In actual applications, with following deficiency：
(1) illumination effect of plurality of LEDs, not against using cooperatively for good reflective optical system and lens, it is difficult to
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 lighted by LED light source control circuit
Dynamic effect, it is impossible to realize 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, it has following two big advantages：
(1) there is self luminous characteristic, it is not necessary to 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 taking additional space, in volume
On possess bigger advantage compared with common LED product；
(2) compared with LED spot light, OLED possesses area source and irreflexive feature, and light quality is uniform, can be achieved stepless
Light modulation, will not project any shade, it is especially suitable for for making automotive lamp product.
By being laid out arrangement to OLED light source, using the planar light source performance of its protrusion, OLED car lights can be made
Source shows abundant Dynamic Announce effect, so as to compensate for the luminous inhomogeneities of existing LED car lamp, display effect well
Single shortcoming.Therefore, how to realize the display control of OLED light source in car light turns into current urgent problem to be solved.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of OLED lamp lighting control circuits,
The Dynamic Announce effect of OLED light source is realized, the various display demands of car light are met.
In order to achieve the above objects and other related objects, the present invention provides a kind of OLED lamp lighting control circuits, 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 break-make control signal and brightness control signal；The first switch group and the microprocessor and the line
Property constant flow module be connected, the break-make control signal for being sent according to the microprocessor generates each OLED light source
On-off switch signal, to control the break-make of the OLED light source via the 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, with 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 microcomputer.
In one embodiment of the invention, in addition to power module, the power module is used for for the microprocessor and institute
State linear constant current module for power supply.
In one embodiment of the invention, in addition to counnter attack connection module, be arranged on the output end of the power module, and with institute
Micro treatment module is stated with the linear constant current module to be connected.
In one embodiment of the invention, the counnter attack connection module uses counnter attack diode.
In one embodiment of the invention, in addition to Voltage stabilizing module, the output end of the power module is arranged on, for for institute
State microprocessor and/or the linear constant current module provides required voltage-stabilized power supply.
In one embodiment of the invention, the brightness control signal uses pwm signal, and accounting for according to the pwm signal
The empty brightness than controlling the OLED light source.
In one embodiment of the invention, the break-make control signal uses I/O signals.
In one embodiment of the invention, several described OLED light sources are divided into several screen body chunks, each screen body chunk
Comprising OLED light source corresponding linear constant current module composition linear constant current module, each linear constant current module opens with described first
Close group to be connected, the on-off switch signal of each screen body chunk for being generated according to the first switch group controls each screen
The break-make of all OLED light sources in body chunk.
In one embodiment of the invention, several described screen body chunks are in symmetrical, each screen body chunk up and down
The OLED light source of identical quantity comprising longitudinal direction arrangement；The brightness control signal includes row brightness control signal and row brightness control
Signal processed.
As described above, the OLED lamp lighting control circuits of the present invention, have the advantages that：
(1) by the combination of the switch controlling signals of negligible amounts, to control the break-make 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, different dynamic to reach
Draw signal and produce different OLED light source dynamic effects；
(3) car light is made still to reach outstanding light under the cooperation without lens using the characteristic of OLED light source
Uniformity；
(4) the characteristics of OLED light source electric current is small is utilized, can be directly using the circuit control mode of linear constant current to OLED
Light source is powered, and reduces circuit cost, high practicability.
Brief description of the drawings
Fig. 1 is shown as the circuit theory schematic diagram of the OLED lamp lighting control circuits of the present invention；
Fig. 2 is shown as the OLED lamp lighting control circuits of the present invention in the structural representation of an embodiment；
Fig. 3 is shown as the OLED screen body of the present invention in the layout structure figure of an embodiment；
Fig. 4 is shown as the OLED screen body of the present invention in the illumination effect schematic diagram of an embodiment；
Fig. 5 is shown as the OLED screen body of the present invention in the illumination effect schematic diagram of another embodiment；
Fig. 6 is shown as the OLED screen body of the present 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
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 understands other advantages and effect of the present invention easily.
It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to coordinate specification to be taken off
The content shown, so that those skilled in the art is understood with reading, is not limited to enforceable qualifications of the invention, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influenceing the present invention
Under the effect that can be generated and the purpose that can reach, it all should still fall and obtain the model that can cover in disclosed technology contents
In enclosing.Meanwhile, the term of cited such as " on ", " under " in this specification, "left", "right", " centre " and " one " is also only
It is easy to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness is altered or modified, without essence
Change under technology contents, when being also considered as enforceable category of the invention.
The OLED lamp lighting control circuits of the present invention can realize the Dynamic Announce effect of OLED light source, meet the various of car light
Display demand, wherein OLED car lights include several OLED light sources.
As shown in figure 1, the OLED lamp lighting control circuits of the present invention are opened including microprocessor 1, first switch group 2, second
Close group 3 and several linear constant current modules 4；A pair of an OLED light source 1 in each linear constant current module and OLED car lights
Should.
Microprocessor 1 is used for according to the car light animation signal generation break-make control signal and brightness control signal received.
Wherein, car light animation signal is used to represent 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 the dynamic effect, including break-make control letter are realized in generation
Number and brightness control signal.That is, by the break-make control and brilliance control of each OLED light source come dynamic needed for realizing
State effect.
Preferably, microprocessor 1 uses single-chip microcomputer.
First switch group 2 is connected with microprocessor 1 and each linear constant current module 4, for being sent according to microprocessor 1
The break-make control signal come generates the on-off switch signal of each OLED light source, with via corresponding with the OLED light source
Linear constant current module control the break-make of the OLED light source.
Wherein, first switch group 2 includes several switches, each switch respectively with a pair of each linear constant current module 1
It should connect, to control the break-make of OLED light source corresponding with the linear constant current module by each linear constant current module.Specifically,
First switch group 2 generates the on-off switch signal of each OLED light source, passed through according to the break-make control signal received
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, with via the line corresponding with the OLED light source
Property constant flow module control the brightness of the OLED light source.
Wherein, second switch group 3 includes several switches, each switch respectively with a pair of each linear constant current module 1
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, passed 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.
In one embodiment of the invention, in addition to power module (not shown), power module is for being microprocessor
With each linear constant current module for power supply.
In one embodiment of the invention, in addition to counnter attack connection module, be arranged on the output end of the power module, and with institute
Micro treatment module is stated with the linear constant current module to be connected.Specifically, it can be set between power module and micro treatment module
There is counnter attack connection module, counnter attack connection module is provided between power module and linear constant current module.It is of course also possible in power supply mould
The output end of block sets a counnter attack connection module, and the output end of the counnter attack connection module is respectively connecting into micro treatment module and line
Property constant flow module.
Preferably, the counnter attack connection module uses counnter attack diode.
In one embodiment of the invention, in addition to Voltage stabilizing module, the output end of the power module is arranged on, for for institute
State microprocessor and/or the linear constant current module provides required voltage-stabilized power supply.To those skilled in the art, voltage stabilizing
Module is ripe prior art, therefore be will not be repeated here.
In one embodiment of the invention, the brightness control signal uses pwm signal, and accounting for according to the pwm signal
The brightness of empty luminous flux, i.e. OLED light source than controlling the OLED light source；The break-make control signal uses I/O signals.Tool
Body, control correspondence in first switch group to switch on-off by I/O signals, pass through the Duty ratio control second of pwm signal
Switch in group and the brightness of inductive switch is selected, so that break-make control signal (I/O signals) and brightness control signal (pwm signal)
Sequencing and two kinds of signals matched combined, realize that the dynamic effect of OLED car lights is shown.
In one embodiment of the invention, pwm signal can also be used as I/O signals.So, then do not realize
OLED car light fade effects, only realize the effect of priority break-make by modes such as sequential.
, will several described OLED light sources in the layout of the OLED light source of OLED car lights in one embodiment of the invention
It is divided into several screen body chunks, the corresponding linear constant current module composition linear constant current mould of the OLED light source that each screen body chunk is included
Group, each linear constant current module is connected with the first switch group, and each screen generated according to the first switch group
The break-make of all OLED light sources in the on-off switch signal control correspondence screen body chunk of body chunk.By said structure, by OLED
The screen body of car light is divided into several screen body chunks, and will each shield the corresponding linear constant current module composition linear constant current of body chunk
Module, and then first switch group only needed to be controlled for each linear constant current module, and each screen body is directed to realize
The break-make control of chunk.In the display operation of actual OLED car lights, typically OLED light source is carried out for a small region
Control, therefore said structure meets the demand of actual conditions, and simplifies the break-make control of OLED light source, it is only necessary to on-off switch all the way
Signal, you can the break-make of all OLED light sources in one screen body chunk of control.
Further, in this embodiment, will several described screen body chunks symmetrical, each screen body above and below
Chunk includes the OLED light source of longitudinal identical quantity arranged, then all OLED light sources form ranks distribution.It is corresponding, it is described
Brightness control signal includes row brightness control signal and row brightness control signal.Pass through the row brightness control signal and row 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, so as to realize that the dynamic effect of OLED car lights is shown, meets the use demand of actual car light.
It should be noted that car light involved in the present invention includes headlamp, taillight, steering indicating light etc., it disclosure satisfy that
The demand that various car light signals are shown.
The OLED car lights of the present invention are elaborated below by specific embodiment.
As shown in Fig. 2 in this embodiment, OLED car lights include power module M1, input reverse-connection preventing circuit M2, source of stable pressure
M3, single-chip microcomputer M4, first switch group M5, second switch group M6 and linear constant current module M7 and M8.In this embodiment,
As shown in figure 3, OLED car lights include upper screen body and lower screen body two parts.Wherein upper screen body include N number of screen body chunk (1 on screen body,
Shield 2 on body ... N on .. screen bodies), each screen body chunk includes 3 OLED light sources of longitudinal direction arrangement, such 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 chunk (screen body
Lower 1, N under screen bodies 2 under screen body ...), each screen body chunk includes 3 OLED light sources of longitudinal direction 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 lights constitute 6 row N row
OLED light source structure.It should be noted that each the number for the OLED light source that screen body chunk is included can be any amount
, depending on actual conditions.Accordingly, first switch group M5 is used for sendaisle switching signal to linear constant current module M7
And M8, second switch group M6 are used to send luminance switch signal to each OLED light source.It is linear in linear constant current module 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 module M8
OLED light source in body connects one to one.It should be noted that the screen body of OLED car lights 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 chunk also may be used
To be arbitrary shape, the form in the present embodiment is not limited to.
Specifically, power module M1 input values reverse-connection preventing circuit M2.Reverse-connection preventing circuit M2 includes two counnter attacks in parallel
Diode D1 and D2.Wherein power input counnter attack diode D1 positive pole all the way, electric current flows out from counnter attack diode D1 negative pole,
Linear constant current module M7 and M8 are flow to, so as to be powered for linear constant current module M7 and M8, and then is realized to upper screen body and lower screen body
Power supply.Another road power input counnter attack diode D2 positive pole, electric current flows out from counnter attack diode D2 negative pole, flow to voltage stabilizing
Source provides power supply M3 to obtain required voltage-stabilized power supply to source of stable pressure, source of stable pressure M3 output 5V or 3.3V voltage to single-chip microcomputer M4
Feeder ear, so as to realize the power supply to single-chip microcomputer M4.
The signal input capture mouthful for the single-chip microcomputer M4 that car light animation signal enters after counnter attack diode D3, single-chip microcomputer M4
The car light animation signal is parsed, via I/O mouthfuls and PWM mouthful export respectively I/O signals as break-make control signal with
It is used as the pwm signal of brightness control signal.Wherein, I/O signals are inputted to first switch group M5, so that it is linear permanent to obtain correspondence
Flow the corresponding on-off switch signal of module.Specifically, I/O signals are controlled corresponding to linear constant current module by exporting low and high level
Screen body chunk in each OLED light source on and off.Pwm signal input second switch group M6 so that obtain it is 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 of output
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 designated the brightness of A, B and C each row OLED light source；Simultaneously including row brightness control signal PWM-1, PWM-2 ...
.PWM-N, control the 1st, the brightness of the OLED light source of 2 ... ..N row are respectively used to.
Specifically, the pwm signal PWMA controls of single-chip microcomputer M4 outputs are designated 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 microcomputer M4 outputs
Individual pwm signal PWMB control be designated 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 3rd pwm signal PWMC controls of single-chip microcomputer M4 outputs are designated 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 dutycycle of tri- pwm signals of PWMB, PWMC and transmission time control light source gradual changes or dynamic of the OLED from inner ring to outer ring
Display effect.The pwm signal PWM1 control Far Lefts 1 of single-chip microcomputer M4 outputs arrange (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 controls left side the 2nd of single-chip microcomputer M4 outputs is arranged
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 microcomputer M4 outputs
All oled lights of one pwm signal PWMN controls 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 microcomputer M4 output an I/O signal " on I/O " control the bright of OLED light sources all in screen body on this and
Go out；The on and off of all OLED light sources in the lower screen body of an I/O signal " under I/O " control of single-chip microcomputer M4 outputs.
Therefore, in the embodiment, power supply is done to OLED light source by linear constant current module M7 and M8 and powered, passes through single-chip microcomputer
After discriminations of the M4 to the car light animation signal of input, and corresponding logical process, single-chip microcomputer M4 is set to export I/O signals (height
Level signal) and pwm signal (dutycycle dim signal) to control first switch group M5 and second switch group M6 switch,
The switch output and the light modulation of linear constant current module for switching group are enabled to control linear constant current module to power OLED light source
Break-make, to reach OLED Dynamic Announce effect.Wherein, the switch in switch group is typically made up of triode or metal-oxide-semiconductor.
Illustrate that the dynamic effect of the OLED car lights 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 rings are used as an entirety A；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 circles are used as an entirety B；By upper " 1-C, upper 2-C, upper 3-C ... ..., upper N-C " and " lower 1-C, lower 2-
C, lower 3-C ... ..., lower N-C " outer rings are used as an entirety C.Inner ring A, centre circle B and outer ring C are controlled by PWMA, PWMB,
The switches set of PWMC signals control, PWMA/PWMB/PWMC output duty cycle signals for example taper to 100% from 10%,
So as to realize the dynamic effect from inner ring A to outer ring C brightness gradual changes.
As shown in figure 5, being used as an entirety screen body module 1 by under on screen body 1 and screen body 1；It will shield 2 and under screen body 2 on body
It is used as an entirety screen body module 2；By that analogy, it regard N under N on screen body and screen body as an entirety screen body module N.From a left side extremely
1~N of right screen body module is controlled by PWM1, and PWM2 ... ..., the switches set of PWMN signals control, PWM1~PWMN outputs are accounted for
Sky is than signal and sends the time, for example, 100% is tapered to from 10%, so as to realize that from left to right sequential 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 outputs controls
Two switch groups in switch, with realize it is without gradual change, light effect according to certain sequential.
As shown in fig. 6, will screen body on 1~screen body on N as on an entirety screen body module；By N under 1~screen body under screen body
As under an entirety screen body module.It is controlled by screen body module and under screen body module on I/O and signal control under I/O
Switches set, I/O is upper and I/O under export low and high level, so as to realize the dynamic switched in turn on screen body module and under screen body module
Effect.
In summary, the combination for the switch controlling signal that OLED lamp lighting control circuits of the invention pass through negligible amounts, comes
The break-make 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, to reach that different animation signals produce different OLED light source dynamic effects；Profit
Car light is set still to reach outstanding uniformity of luminance under the cooperation without lens with the characteristic of OLED light source；Utilize
The characteristics of OLED light source electric current is small, directly can be powered using the circuit control mode of linear constant current to OLED light source, drop
Low circuit cost, high practicability.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial
Value.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. a kind of OLED lamp lighting control circuits, the OLED car lights include 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 is corresponded；
The microprocessor is used for according to the car light animation signal generation break-make control signal and brightness control signal received；
The first switch group is connected with the microprocessor and the linear constant current module, for according to the microprocessor
The break-make 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 break-make 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 circuits according to claim 1, it is characterised in that：The microprocessor uses single-chip microcomputer.
3. OLED lamp lighting control circuits according to claim 1, it is characterised in that：Also 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 circuits according to claim 3, it is characterised in that：Also include counnter attack connection module, be arranged on
The output end of the power module, and be connected with the micro treatment module and the linear constant current module.
5. OLED lamp lighting control circuits according to claim 4, it is characterised in that：The counnter attack connection module uses counnter attack two
Pole pipe.
6. OLED lamp lighting control circuits according to claim 3, it is characterised in that：Also include Voltage stabilizing module, be arranged on institute
The output end of power module is stated, for for the voltage-stabilized power supply needed for the microprocessor and/or linear constant current module offer.
7. OLED lamp lighting control circuits according to claim 1, it is characterised in that：The brightness control signal uses PWM
Signal, and according to the Duty ratio control of the pwm signal OLED light source brightness.
8. OLED lamp lighting control circuits according to claim 1, it is characterised in that：The break-make control signal uses I/O
Signal.
9. OLED lamp lighting control circuits according to claim 1, it is characterised in that：If several described OLED light sources are divided into
Dry screen body chunk, the corresponding linear constant current module composition linear constant current module of OLED light source that each screen body chunk is included, often
Individual linear constant current module is connected with the first switch group, for each screen body group generated according to the first switch group
The on-off switch signal of block controls the break-make of all OLED light sources in each screen body chunk.
10. OLED lamp lighting control circuits according to claim 9, it is characterised in that：Several described screen body chunks are presented
Under it is symmetrical, each screen body chunk comprising longitudinal direction arrangement identical quantity OLED light source；The brightness control signal
Including row brightness control signal and row 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN107172742A true CN107172742A (en) | 2017-09-15 |
| CN107172742B CN107172742B (en) | 2019-04-16 |
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| US11865968B2 (en) | 2020-09-16 | 2024-01-09 | Koito Manufacturing Co., Ltd. | Vehicle lamp and lamp control module |
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| CN107172742B (en) | 2019-04-16 |
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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 |