CN107426850A - A kind of Lighting Control Assembly - Google Patents
A kind of Lighting Control Assembly Download PDFInfo
- Publication number
- CN107426850A CN107426850A CN201610345758.8A CN201610345758A CN107426850A CN 107426850 A CN107426850 A CN 107426850A CN 201610345758 A CN201610345758 A CN 201610345758A CN 107426850 A CN107426850 A CN 107426850A
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- China
- Prior art keywords
- light emitting
- driver element
- emitting diode
- lighting control
- control assembly
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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]
Abstract
A kind of Lighting Control Assembly, including multiple light emitting diodes, wherein the electric current of each light emitting diode is controlled by single light emitting diode driver element；Each light emitting diode driver element includes a shift register；Described each driver element includes at least one copy current module, and at least one corrected data memory, and at least one image data memory, and at least one logical-arithmetic unit, and at least one binary system control memory；The master controller transmits the major control data at least one corrected data memory；And the master controller is sent display data at least one image data memory.This illuminator realizes the Lighting control to single-shot optical diode, rather than light emitting module of the control with multiple single-shot optical diodes, improves the abundant degree of illumination, and therefore reduce physical size and cost.
Description
Technical field
The present invention relates to a kind of Lighting Control Assembly, more specifically to one kind building backlight and Lighting control
Light emitting diode (LED) Lighting Control Assembly.
Background technology
LED (LightingEmittingDiode) illuminations are LED lighting, are a kind of semiconducting solids
Luminescent device.It is by the use of solid semiconductor chip as luminescent material, is occurred in the semiconductors by carrier
It is compound to release superfluous energy and cause photon to be launched, red, yellow, blue, green light is directly sent, in this base
On plinth, using the principle of three primary colours, add fluorescent material, can send it is red, yellow, blue, green, blue or green, orange, purple,
The light of the random colors such as white.LED lamp is exactly the ligthing paraphernalia manufactured by the use of LED as light source.
Light emitting diode (LED) has been widely used for illumination display, either color LED or achromaticity LED,
It is widely used in various applications and industry.Although each individually LED can be a light source,
All applications be by modularized light source group for control purposes.In general drive scheme has two kinds：Linearly
Driving and switching mode driving.Linear drive applications are a kind of the simplest and the most direct driving application modes.
In the application of illumination level white light LEDs, although there is the problems such as efficiency is low, modulability is poor, due to its electricity
Road is simple, compact, can meet that some specific applications are more.Switching mode driving can obtain good
Current control accuracy and higher overall efficiency, application mode be broadly divided into buck and the major class of boost type two.
Buck switch drive is to use parallel drive for terminal voltage of the supply voltage higher than LED either multiple LED
In the case of application.Booster switcher driving is either multiple for terminal voltage of the supply voltage less than LED
LED uses the application in the case of tandem drive.It is relatively simple to design the basic LED driver illumination application of in general
It is single, but if also needing to other functions such as phase control dimming and power factor correcting (PFC), design just becomes
It is complicated.
The major defect of current Lighting control is that each light-emitting diode (LED) module performs identical brightness, color
Saturation degree, brightness etc., all application programs all make the electric current flowing of control to each " light-emitting diode (LED) module "
Circuit, and all equipment causes illumination to show by from physical layer design and the current flow for being defined as specifying
Unification and complicated lighting environment design when control module complicate.
The content of the invention
In view of situation above, in order to solve the problems, such as that above-mentioned technology is present, the present invention proposes a kind of Lighting control system
System, including multiple light emitting diodes, wherein the electric current of each light emitting diode is driven by single light emitting diode
Moving cell control；The color of illumination is by red light emitting diodes, green LED and blue-light-emitting two
What the group selection of pole pipe composition was formed；Each light emitting diode driver element includes a shift register, its
In each shift register storage by light emitting diode driver element control light emitting diode illumination shape
State, and control the luminous of the light emitting diode；The illumination condition receives different displays in driver element
Had been stored in before signal in shift register；Each driver element is sequentially connected, only one of which
Driver element is connected to console controller；Console controller will show that signal is transmitted to driver element；Described is aobvious
Show that signal is sequentially transmitted in the form of scanning to each driver element；Described each driver element is included extremely
A few copy current module, and at least one corrected data memory, and at least one view data are deposited
Reservoir, and at least one logical-arithmetic unit, and at least one binary system control memory；The main control
Device transmits the major control data at least one corrected data memory；And the master controller will be aobvious
Registration evidence is sent at least one image data memory.
In illuminator according to embodiments of the present invention, it is preferable that at least one logical-arithmetic unit according to
Default logical formula is calculated the correction data and described image data, to produce the two of a N position
System number, wherein, N is the quantity of the replica current module.Each of the binary number represents electric current
Flow into or do not flow into light emitting diode, the magnitude of current of inflow light emitting diode is controlled by the driver element.
In illuminator according to embodiments of the present invention, it is preferable that including multiple driver elements, wherein each
Driver element connects different light emitting diodes respectively, and the multiple driver element is sequentially connected；Also include master control
Device processed, only one of which driver element are connected to master controller.Flow into what is be attached thereto by driver element control
The electric current of light emitting diode, and picture signal is transferred to the driver element being attached thereto by master controller, and then
Described image signal is transferred to remaining driver element in the form of scanning.
Each driver element includes at least one replica current module, at least one corrected data memory, at least
One image data memory, at least one logical-arithmetic unit and at least one binary system control memory, wherein,
The master controller transmits the correction data of light emitting diode at least one corrected data memory, and to
At least one image data memory transmission view data.
Multiple light emitting diodes are selected from by red light emitting diodes, green LED and the pole of blue-light-emitting two
The group of pipe composition, the driver element include the shift LD of the light-emitting data of light emitting diode corresponding to storage
Device, and the luminance of the light emitting diode is controlled, the light-emitting data is had been stored in shift register
In, untill driver element is received with another image information.
In illuminator according to embodiments of the present invention, alternatively, at least one logical-arithmetic unit according to
Default logical formula is calculated the correction data and described image data, to produce the two of a N position
System number, wherein, N is the quantity of the replica current module.Each of the binary number represents electric current
Flow into or do not flow into light emitting diode, the predetermined electricity of inflow light emitting diode is controlled by the driver element
Stream.
In illuminator according to embodiments of the present invention, it is preferable that including multiple driver elements, control respectively
The electric current of each light emitting diode is flowed into, wherein each driver element includes at least one replica current module, extremely
A few corrected data memory, at least one image data memory, at least one logical-arithmetic unit and at least
One binary system control memory, the master controller transmit luminous at least one corrected data memory
The correction data of diode, and transmit view data at least one image data memory.
At least one logical-arithmetic unit is according to default logical formula to the correction data and described image number
According to being calculated, to produce the binary number of a N position, wherein N is the quantity of the replica current module.
Each of the binary number represents that electric current flows into or do not flow into light emitting diode, by the driver element come
Control flows into the magnitude of current of light emitting diode.
Preferably, in addition to master controller, wherein, multiple driver elements are sequentially connected with, and only one driving
Unit is connected with master controller and receives the picture signal from master controller transmission, and the subsequent signal is by with scanning
Form be sequentially transmitted remaining driver element, multiple light emitting diodes are selected from by the pole of emitting red light two
The group of pipe, green LED and blue LED composition, the driver element are included corresponding to storage
The shift register of the light-emitting data of light emitting diode, and the luminance of the light emitting diode is controlled, it is described
Light-emitting data is had been stored in shift register, untill driver element receives another picture signal.
After technology proposed by the present invention is taken, a kind of illuminator according to embodiments of the present invention, pass through control
Current current flow, and each LED is individually controlled, each controlled LED detailed status,
Can be with binary number representation.The Lighting control to single-shot optical diode is realized, rather than control has multiple lists
The light emitting module of light emitting diode, the framework of single-shot optical diode Lighting control improve the illumination of light emitting diode
Abundant degree.In addition, two step current controls can substantially reduce required RCM and therefore reduction physical size
And cost.
Brief description of the drawings
Fig. 1 shows LED backlight configuration diagram according to embodiments of the present invention
Fig. 2 shows a light emitting diode driver element according to embodiments of the present invention
Fig. 3 shows that the Control system architecture of embodiment LED backlight framework according to embodiments of the present invention and driver element shows
It is intended to
Fig. 4 shows that R-G-B according to embodiments of the present invention is alternately arranged the Control system architecture of LED backlight framework and shown
It is intended to
Fig. 5 shows that R-G-G-B according to embodiments of the present invention is alternately arranged the Control system architecture of LED backlight framework
Schematic diagram
Fig. 6 shows that R-R-G-G-B-B according to embodiments of the present invention is alternately arranged the control system of LED backlight framework
Structural representation
Fig. 7 shows the Control system architecture according to embodiments of the present invention that driver element is controlled using binary current
Schematic diagram
Fig. 8 shows two step current control device schematic diagrames according to embodiments of the present invention
Embodiment
Each preferred embodiment of the present invention is described below with reference to accompanying drawings.There is provided referring to attached
The description of figure, to help to the reason of the example embodiment of the invention limited by appended claims and their equivalents
Solution.It includes helping the various details that understand, but they can only be counted as it is exemplary.Therefore, originally
Art personnel to embodiment described herein it will be recognized that can make various changes and modifications, without de-
From scope and spirit of the present invention.Moreover, in order that specification is more clear succinct, it is ripe to this area by omitting
Know function and the detailed description of construction.
As shown in figure 1, show the schematic diagram of the backlight framework of the LED according to the present invention.In Fig. 1, LED
Luminescent control system include master controller 5, LED drive unit 101,102 ..., 10N, 201,202,
20N ..., M01, M02 ..., M0N and LED11,12 ..., 21,22 ..., M1, M2 ...,
MN.Master controller can be micro- arithmetic unit or computing device, for calculate and output image data, with to
Driver element provides complete color saturation or brightness.Each LED and corresponding LED drive unit are single-phase
Connection, and LED drive unit sequentially connects in succession together with LED, so as to form the structure of matrix arrangement.It is main
Controller 5 transmits all picture signal and control signal, and above-mentioned signal is transmitted directly into foremost
(lead) driver element (i.e. first LED drive unit), then, first LED drive unit is by identical signal
It is transferred to second LED drive unit.Thus, signal is sequentially connected, and signal is passed in a manner of similar scanning
It is defeated to second LED drive unit being connected with first LED drive unit, and continue in an identical manner to
Other LED drive unit transmission.Therefore, signal be sequentially transferred to second from first LED drive unit,
Three, the 4th to last LED drive unit M0N, thus, completed as scanning to all LED
The process of driver element input data.
Fig. 2 shows a light emitting diode driver element according to embodiments of the present invention.In fig. 2, drive
Unit includes shift register 210.Shift register include digital received unit 212, reset module 214 with
And frequency control module 216.When luminescent control system starts initialization, reset signal can be single by all drivings
The shift register of member is reset.When frequency control module starts to produce frequency, master controller produces preliminary sweep
Signal is with log-on data scanning imaging system.Now, scanning signal reaches first LED drive unit, shift LD
Device will store light-emitting data needed for first LED, until data transfer last in same two field picture to the end
Untill one LED drive unit.Each LED corresponding shift register will be stored and kept needed for the LED
Light-emitting data, untill next scanning imaging system starts, and image will be immediately transmitted to first LED
To last LED.When " scanning signal " reaches, data corresponding with next image and shift LD
Device will start working.In other words, when changing light emitting control, each LED luminance keep it is constant until
Untill next picture signal reaches.
Fig. 3 is the light emitting control according to another embodiment of the present invention using driver element and LED backlight framework
The schematic diagram of system, wherein, the structure of LED drive unit is aggregation arrangement, and scanning signal program and figure
It is identical described in 2.
Fig. 4 to Fig. 6 shows several different embodiments of the present invention, and phase has been used in these embodiments
Same scanning signal program, but diversified colorful light-emitting control is shown with different LED structure.
Reference picture 4, the LED of different colours arrange according to the order of red, green and blueness；Reference picture 5, no
Arranged with the LED of color according to the order of red, green, green and blueness；Reference picture 6, different colours
LED according to it is red, red ..., green, green ..., the order of blueness and blueness arranges.When making
During with scanning signal program, luminous diversity can be realized by changing LED arrangement architecture.It should understand
, above-mentioned arrangement mode is exemplary, and the present invention is not limited thereto, the light emitting control row of other colors
Row are also fallen within protection scope of the present invention.
Fig. 7 is shown according to the present invention using binary digit come the structure of the driver element of control electric current
Schematic diagram.In the figure 7, each LED connects with corresponding LED drive unit, wherein, driver element includes
At least one corrected data memory 710, at least one image data memory 712, at least one logic fortune
Calculate device 714, at least one binary system control memory 716, at least one mirror current source 718 and multiple
Replica current module (ReplicaCurrentModule, RCM) 7201,7202,7203 ... 720n.
When needing the light-emitting data of light emitting diode, master controller transmits at least one corrected data memory
Correction data signal, correction data signal will control the level led luminous required brightness of compensation time, main
Controller transmits view data at least one set of image data memory, to provide the number of required luminous intensity
According to.Logical-arithmetic unit carries out logical operation to correction data and view data, using the logical formula pre-set,
Brightness with LED and the corresponding N bit binary datas of saturation degree are obtained, wherein, N is replica current module
(RCM) quantity, each digit order number (1 or 0) represent that electric current flows into or do not flowed into replica current module.In the presence of
Accordingly there is 2N+1 kinds in N number of replica current module, current status, in other words, flow into light emitting diode
The magnitude of current can be changed in a manner of 2N+1 kinds.
Schematic diagrames of the Fig. 8 using red LED to be illustrated the gradual current control mode of two benches.In Fig. 8
In, electric current is input in LED so that two benches are gradual, and two electric currents are inputted to the driver element of light emitting diode
Source, i.e. baseline current-source (BCS) 802 and weighted current source (WCS) 804.Baseline current-source (BCS) is used for luminous
Diode provides pre-set constant current, in other words, for adjusting the light emitting control of light emitting diode,
And weighted current source (WCS) further adjusts the magnitude of current according to image.Controlling electricity can reduce device and set
Standby bulk simultaneously reduces the cost of manufacture of replica current module, that is, realizes that the embodiment in Fig. 7 to be reached
Effect.
After technology proposed by the present invention is taken, a kind of illuminator according to embodiments of the present invention, pass through control
Current current flow, and each LED is individually controlled, each controlled LED detailed status,
Can be with binary number representation.The Lighting control to single-shot optical diode is realized, rather than control has multiple lists
The light emitting module of light emitting diode, the framework of single-shot optical diode Lighting control improve the illumination of light emitting diode
Abundant degree.In addition, two step current controls can substantially reduce required RCM and therefore reduction physical size
And cost.
The present invention is described in detail above, principle and reality of the specific case used herein to the present invention
The mode of applying is set forth, and the explanation of above example is only intended to help the method and its core for understanding the present invention
Thought；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention, in embodiment
And there will be changes in application, in summary, this specification content should not be construed as to the present invention's
Limitation.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can
Implement.Certainly, above listed situation is merely illustrative, and the present invention is not limited to this.Those skilled in the art
Member can be suitably applied to this hair it should be understood that according to other deformations or simplified of technical solution of the present invention
It is bright, and should be included within the scope of the invention.
Claims (16)
1. a kind of Lighting Control Assembly, it is characterised in that including multiple light emitting diodes, wherein each luminous
The electric current of diode is controlled by single light emitting diode driver element；The color of illumination is by emitting red light
What the group selection of diode, green LED and blue LED composition was formed；Each luminous two
Pole pipe driver element includes a shift register, wherein the storage of each shift register is by the light emitting diode
The illumination condition of the light emitting diode of driver element control, and control the luminous of the light emitting diode；The photograph
Bright state is had been stored in shift register before different display signals is received in driver element；Each
Driver element is sequentially connected, and only one of which driver element is connected to console controller；Console controller will
Display signal is transmitted to driver element；Described display signal is sequentially transmitted in the form of scanning to each drive
Moving cell；Described each driver element includes at least one copy current module, and at least one correction number
According to memory, and at least one image data memory, and at least one logical-arithmetic unit, and at least
One binary system control memory；The master controller transmits the major control data at least one correction
Data storage；And the master controller is sent display data at least one image data memory.
2. a kind of Lighting Control Assembly according to claim 1, it is characterised in that described at least one
Logical-arithmetic unit is calculated the correction data and described image data according to default logical formula, to produce
The binary number of one N position, wherein, N is the quantity of the replica current module.
A kind of 3. Lighting Control Assembly according to claim 1, it is characterised in that the binary number
Each represent that electric current flows into or do not flow into light emitting diode.
4. a kind of Lighting Control Assembly according to claim 1, it is characterised in that pass through the driving
Unit flows into the magnitude of current of light emitting diode to control.
5. a kind of Lighting Control Assembly, it is characterised in that including multiple driver elements, wherein each driving is single
Member connects different light emitting diodes respectively, and the multiple driver element is sequentially connected；Also include master controller,
Only one of which driver element is connected to master controller.
6. a kind of Lighting Control Assembly according to claim 5, it is characterised in that by driver element control
System flows into the electric current for the light emitting diode being attached thereto, and picture signal is transferred to what is be attached thereto by master controller
Driver element, and then that remaining drive control is transferred in the form of scanning is substantially single for described image signal
Member.
A kind of 7. Lighting Control Assembly according to claim 6, it is characterised in that each driver element
Including at least one replica current module, at least one corrected data memory, the storage of at least one view data
Device, at least one logical-arithmetic unit and at least one binary system control memory, wherein, the master controller to
The correction data of at least one corrected data memory transmission light emitting diode, and at least one figure
As data storage transmission view data.
A kind of 8. Lighting Control Assembly according to claim 7, it is characterised in that multiple light-emitting diodes
Pipe is described selected from the group being made up of red light emitting diodes, green LED and blue LED
Driver element includes the shift register of the light-emitting data of light emitting diode corresponding to storage, and controls described luminous
The luminance of diode, the light-emitting data are had been stored in shift register, until driver element connects
Untill receiving with another image information.
9. a kind of Lighting Control Assembly according to claim 8, it is characterised in that described at least one
Logical-arithmetic unit is calculated the correction data and described image data according to default logical formula, to produce
The binary number of one N position, wherein, N is the quantity of the replica current module.
A kind of 10. Lighting Control Assembly according to claim 9, it is characterised in that the binary system
Each several represents that electric current flows into or do not flowed into light emitting diode.
11. a kind of Lighting Control Assembly according to claim 8, it is characterised in that pass through the drive
Moving cell flows into the scheduled current of light emitting diode to control.
12. a kind of Lighting Control Assembly, it is characterised in that including multiple driver elements, control respectively flows into
The electric current of each light emitting diode, wherein each driver element includes at least one replica current module, at least one
Individual corrected data memory, at least one image data memory, at least one logical-arithmetic unit and at least one
Binary system control memory, the master controller transmit light-emitting diodes at least one corrected data memory
The correction data of pipe, and transmit view data at least one image data memory.
13. a kind of Lighting Control Assembly according to claim 12, it is characterised in that described at least one
Individual logical-arithmetic unit is calculated the correction data and described image data according to default logical formula, with production
The binary number of a raw N position, wherein N are the quantity of the replica current module.
A kind of 14. Lighting Control Assembly according to claim 13, it is characterised in that the binary system
Each several represents that electric current flows into or do not flowed into light emitting diode.
15. a kind of Lighting Control Assembly according to claim 12, it is characterised in that pass through the drive
Moving cell flows into the magnitude of current of light emitting diode to control.
16. a kind of Lighting Control Assembly according to claim 12, it is characterised in that also including master control
Device processed, wherein, multiple driver elements are sequentially connected with, and only a driver element is connected and connect with master controller
The picture signal from master controller transmission is received, the subsequent signal is sequentially transmitted to remaining in the form of scanning
Driver element, multiple light emitting diodes be selected from by red light emitting diodes, green LED and blueness
The group of light emitting diode composition, the driver element include the shifting of the light-emitting data of light emitting diode corresponding to storage
Bit register, and the luminance of the light emitting diode is controlled, the light-emitting data is had been stored in displacement
In register, untill driver element receives another picture signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345758.8A CN107426850A (en) | 2016-05-23 | 2016-05-23 | A kind of Lighting Control Assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345758.8A CN107426850A (en) | 2016-05-23 | 2016-05-23 | A kind of Lighting Control Assembly |
Publications (1)
| Publication Number | Publication Date |
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| CN107426850A true CN107426850A (en) | 2017-12-01 |
Family
ID=60422378
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610345758.8A Withdrawn CN107426850A (en) | 2016-05-23 | 2016-05-23 | A kind of Lighting Control Assembly |
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| Country | Link |
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| CN (1) | CN107426850A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI723669B (en) * | 2019-12-06 | 2021-04-01 | 新唐科技股份有限公司 | Backlight device and driving method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188893A (en) * | 2006-11-24 | 2008-05-28 | 昊昱科技股份有限公司 | LED lighting control system |
-
2016
- 2016-05-23 CN CN201610345758.8A patent/CN107426850A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188893A (en) * | 2006-11-24 | 2008-05-28 | 昊昱科技股份有限公司 | LED lighting control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI723669B (en) * | 2019-12-06 | 2021-04-01 | 新唐科技股份有限公司 | Backlight device and driving method |
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Application publication date: 20171201 |