CN110534064A - A kind of Auto-stereo display optical fiber backlight source timesharing driving circuit - Google Patents
A kind of Auto-stereo display optical fiber backlight source timesharing driving circuit Download PDFInfo
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- CN110534064A CN110534064A CN201910790208.0A CN201910790208A CN110534064A CN 110534064 A CN110534064 A CN 110534064A CN 201910790208 A CN201910790208 A CN 201910790208A CN 110534064 A CN110534064 A CN 110534064A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 69
- 239000000835 fiber Substances 0.000 claims abstract description 33
- 230000000306 recurrent effect Effects 0.000 claims abstract description 15
- 125000004122 cyclic group Chemical group 0.000 claims abstract 2
- 239000004065 semiconductor Substances 0.000 claims description 45
- 230000005611 electricity Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 7
- 230000008676 import Effects 0.000 abstract description 2
- 230000005669 field effect Effects 0.000 description 14
- RVRCFVVLDHTFFA-UHFFFAOYSA-N heptasodium;tungsten;nonatriacontahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[W].[W].[W].[W].[W].[W].[W].[W].[W].[W].[W] RVRCFVVLDHTFFA-UHFFFAOYSA-N 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 3
- 230000003760 hair shine Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 208000002173 dizziness Diseases 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 208000003464 asthenopia Diseases 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 229940085805 fiberall Drugs 0.000 description 1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of Auto-stereo display optical fiber backlight source timesharing driving circuits, comprising: 3D vision signal, control chip, control chip power, recurrent pulses duty ratio adjusting circuit, MOS drive circuit, driving power, three tunnels are light-emitting LED and fiber optic bundle；The 3D vision signal is connected with control chip to provide pulse signal；The control chip power is connected with control chip to provide power supply；The recurrent pulses duty ratio adjusting circuit is connected to adjust control chip and export to the recurrent pulses duty ratio of MOS drive circuit with control chip；The control chip is connected to export cyclic pulse signal with MOS drive circuit；The MOS drive circuit with three tunnels are light-emitting LED is connected；Three tunnel is light-emitting LED to be connected to import light into inside of optical fibre with fiber optic bundle.The horizontal parallax image played on liquid crystal image display screen is projected the right and left eyes of viewer by the present invention respectively, realizes naked eye 3D display.
Description
Technical field
The invention belongs to optical fibre illuminations and display field, and in particular to a kind of Auto-stereo display optical fiber backlight source timesharing drive
Dynamic circuit.
Background technique
With the rapid development of electronic technology, the popularity rate of liquid crystal display is higher and higher.Backlight source driving circuit is liquid
The important component of crystal display, since liquid crystal molecule itself does not shine, so needing backlight to provide for liquid crystal display
Special light source, such as LCD TV, LCD computer etc..The backlight of liquid crystal display is mainly light-emitting diode light bar, and is
Multi-path lamp strip, and at present under the trend of the display handoff functionality multiplicity of display, display requires system that can move mostly
State realize between 2D function and 3D function it is smooth switch, be embodied in display can under the requirement of user with 2D or
3D display mode display.A kind of backlight in the prior art includes lamp bar, diffusion sheet, light guide plate, prismatic lens and reflection
Piece, for lamp bar as linear light source, the light that lamp bar issues injects forming face light after light guide plate, and diffusion sheet is used for the face light that will be formed
Line further scatters uniformly, behind light enter prismatic lens, by the effect of prismatic lens, face light is ultimately formed with specific
The backlight of irradiating angle, the light that reflector plate is used to project part light guide plate are reflected back in light guide plate, improve the utilization rate of light.
But the backlight light bar size designed in this way is larger, and the linearity is poor, and the backlight design for being unable to satisfy Auto-stereo display is wanted
It asks.
Side emitting optical fiber is a kind of novel illumination optical fiber, since the characteristics of its close ideal linear light source can be used as free stereo
The backlight of display, to reduce the cross-interference issue of Auto-stereo display, so needing to design the special of side emitting optical fiber backlight
Use driving circuit.Existing backlight source driving circuit some also needs multiple chips to be just able to achieve the control to Multi-path lamp strip, this
Sample further increases the cost of manufacture of backlight source driving circuit, and the reliability of existing backlight source driving circuit also compared with
Difference, and be unable to complete real-time synchronization 3D signal and timesharing reverse phase light emitting control is carried out to light source group.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, propose a kind of Auto-stereo display optical fiber backlight source timesharing
Driving circuit projects the horizontal parallax image played on liquid crystal image display screen by using timing backlight control respectively
The right and left eyes of viewer realize naked eye 3D display, overcome the problems, such as other type naked eye 3D monitor resolution declines.Furthermore
Auto-stereo display optical fiber backlight source timesharing driving circuit of the invention can carry out the stream of 2D and 3D picture during viewing
Smooth switching, facilitates user to be adjusted the broadcasting demand in different video source.
The present invention adopts the following technical scheme:
A kind of Auto-stereo display optical fiber backlight source timesharing driving circuit, including 3D vision signal, control chip, control core
Piece power supply, recurrent pulses duty ratio adjusting circuit, MOS drive circuit, driving power, power switch, three tunnels are light-emitting LED and light
Fine beam.
The 3D vision signal is the switching signal of display screen left images when playing 3D video film source, signal frequency
It is consistent with the switching signal frequency of image.
Control core of the control chip as whole system, is energized by programming and carries out signal identification to whole system
And control, the control chip model are MK60DN512ZVLQ10, are Freescale company Kinetis Series of MCU,
Based on 32 8-digit microcontroller of ARM Cortex-M4 kernel, it is internally integrated UART, SLCD, TSI, USB, Ethernet and CAN etc.
Module has high-precision 16 ADC and 12 DAC.
The control chip power is 5V DC power supply, is powered for the control chip.
The port the control chip PTB6 connects the 3D vision signal, and the port PTE0 connects the recurrent pulses duty ratio tune
Economize on electricity road, the port PTA6 connect the light-emitting LED corresponding first MOS drive circuit input port in three tunnel, and the port PTA11 connects described
The light-emitting LED corresponding second MOS drive circuit input port in three tunnels, the port PTA15 connect three tunnel light-emitting LED corresponding
Three MOS drive circuit input ports.
The recurrent pulses duty ratio adjusting circuit includes 5V DC power supply and a 1K Ω adjustable resistance, for adjusting
The control chip is exported to the recurrent pulses duty ratio of the MOS drive circuit, circuit by 5V DC power anode with
1K Ω adjustable resistance accesses the port the control chip PTE0 after connecting, and the resistance value by adjusting adjustable resistance can change described
The input voltage for controlling the port chip PTE0, by the control chip to obtaining recurrent pulses after the port PTE0 progress ADC and account for
The regulated value of empty ratio.
The driving power is 9V DC power supply, and for the MOS drive circuit and three tunnel is light-emitting LED is powered.
The MOS drive circuit include the metal-oxide-semiconductor field effect transistor of 6 model D4184, the resistance that 3 resistance values are 10K Ω and
The resistance that 3 resistance values are 1 Ω；The MOS drive circuit is divided into three tunnels, respectively the first MOS driving circuit, the 2nd MOS driving
Circuit and third MOS drive circuit.
Metal-oxide-semiconductor field effect transistor of the every road of three MOS drive circuits comprising 2 model D4184,1 resistance value are 10K Ω
Resistance and 1 resistance value be 1 Ω resistance, wherein the metal-oxide-semiconductor field effect transistor of 2, every road model D4184 carry out it is in parallel, after in parallel
The grid G of D4184 field-effect tube connects with the resistance that resistance value is 1 Ω and connects the output port of the control chip, and waits
The pulse signal issued by the control chip；Another resistance value be 10K Ω resistance with it is in parallel after D4184 field-effect tube grid
Pole G series connection, and be connected with the end signal ground GND；The end source level S and signal ground GND of D4184 field-effect tube is connected after parallel connection；
The drain D of D4184 field-effect tube light-emitting LED is connected as the output end of the MOS drive circuit with described after parallel connection.
The output end of first MOS drive circuit, the second MOS drive circuit and third MOS drive circuit meets institute respectively
State the first light-emitting LED white light LEDs of three tunnels, the second white light LEDs and third white light LEDs.
Light-emitting LED three tunnel includes 3 white light LEDs, and respectively the first white light LEDs, the second white light LEDs and third are white
Light LED.
The light-emitting LED anode in three tunnel carry out it is in parallel after be connected with the end Vbat of the driving power, cathode respectively with
First MOS drive circuit, the second MOS drive circuit are connected with third MOS drive circuit.
Three tunnel is light-emitting LED to have a driving power to switch between the driving power, is switched and is controlled by driving power
Power supply processed and the light-emitting LED disconnection in three tunnel be connected to.
The fiber optic bundle is bundled by several fibers, is divided into the first fiber optic bundle, the second fiber optic bundle and third fiber optic bundle point
Other reference numeral is optical fiber 1., 2. and 3..
The input terminal of the fiber optic bundle with three tunnel is light-emitting LED is coupled so that three tunnel is light-emitting LED in work
As when import light into inside of optical fibre；The input terminal of first fiber optic bundle, the second fiber optic bundle and third fiber optic bundle respectively corresponds described
First white light LEDs, the second white light LEDs and third white light LEDs.
After adopting the above scheme, Auto-stereo display optical fiber backlight source timesharing driving circuit of the invention controls LED, LED
The diverging white light beam that light source module (three tunnels are light-emitting LED) is issued is coupled to fiber optic bundle, and the light energy of fiber optic bundle is transferred to patch
It closes on the lateral emitting optical fiber of black floor, and shines and form linear light source and be incident to cylinder plano-convex lens, light finally passes through
Display screen reaches human eye.When the 3D vision signal that Auto-stereo display optical fiber backlight source timesharing driving circuit receives is in 3D mould
When formula, white light LED light source module corresponding to No. 1 optical fiber and No. 2 optical fiber carries out time-sharing work, and timesharing frequency and 3D video are believed
Number frequency it is consistent, the corresponding LED light source module of No. 3 optical fiber do not shine always, the orientation projecting beam corresponding to it
Position forms a dark space, and viewer is enabled to can't see image, can avoid in this way viewer see mutually reverse left images and
Generate the feeling of dizziness.1. the light that number optical fiber issues is converted to the projecting beam of orientation by lens, project viewer's
Left eye, the light that 2. number optical fiber issues project viewer's right eye, and the right and left eyes of such viewer just can see that two width differences have
There is the image of parallax, then forms 3D stereoscopic vision.It is received when Auto-stereo display optical fiber backlight source timesharing driving circuit
When 3D vision signal 1 is in low level state always, system works in 2D watching mode, the figure that viewer's right and left eyes are seen at this time
As completely the same, there is no the problems that left images mutually overturn, so system is all sent out without setting dark space, lateral emitting optical fiber
Light, i.e. number are that optical fiber 1., 2. and 3. all shines.Auto-stereo display optical fiber backlight source timesharing driving of the invention in this way
Circuit can carry out 2D during viewing and the smooth of 3D picture switches, and meet user to the broadcasting demand in different video source.
Auto-stereo display optical fiber backlight source timesharing driving circuit of the invention has and responds sensitive, signal acquisition precision
The characteristics of height, job stability is high, strong environmental adaptability.Using timesharing display technology, reduce between horizontal parallax image
Crosstalk, brightness of display screen eliminate image ghost image, anti-dazzle and visual fatigue outside being unaffected substantially.
The above description is only an overview of the technical scheme of the present invention, in order to more clearly understand technology hand of the invention
Section, so as to be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention
It can be more clearly understood, be exemplified below a specific embodiment of the invention.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
Above-mentioned and other purposes of the invention, advantages and features.
Detailed description of the invention
Fig. 1 is the main frame block diagram of Auto-stereo display optical fiber backlight source timesharing of the present invention driving；
Fig. 2 is that Auto-stereo display optical fiber backlight source of the present invention is directed toward light source schematic diagram；
Fig. 3 is that timesharing of the present invention drives way circuit schematic diagram；
Fig. 4 is timesharing drive control chip program flow chart of the present invention；
Fig. 5 is that timesharing of the present invention drives 2D and the pulse sequence figure under 3D mode.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Referring to figs. 1 to 5, Auto-stereo display optical fiber backlight source timesharing driving circuit of the invention, including 3D view
Frequency signal 1, control chip 2, control chip power 3, recurrent pulses duty ratio adjusting circuit 4, MOS drive circuit 5, driving electricity
Source 6, power switch S1, three tunnels light-emitting LED 7 and fiber optic bundle 8.
Auto-stereo display optical fiber backlight source of the invention uses timing backlight control, will play on liquid crystal image display screen
Horizontal parallax image project the right and left eyes of viewer respectively, realize naked eye 3D display.The hair that LED light source module is issued
Scattered white light beam is coupled to fiber optic bundle 8, and the light energy of fiber optic bundle 8 is transferred to the lateral emitting optical fiber 10 for being fitted in black floor 9
On, and the luminous linear light source that formed is incident to cylinder plano-convex lens 11, light finally passes through display screen 12 and reaches human eye.Linear light source
Position determines the direction of outgoing beam, when numbering the difference of 11 position of cylinder plano-convex lens corresponding to different optical fiber, therefore shining
Outgoing beam direction is also different.
Referring to figure 3., Auto-stereo display optical fiber backlight source timesharing driving circuit of the invention, control chip 2 is as whole
The control core of a system can carry out signal identification and control to whole system, control 2 model of chip
MK60DN512ZVLQ10 is Freescale company Kinetis Series of MCU, micro- based on ARM Cortex-M4 kernel 32
Controller is internally integrated the modules such as UART, SLCD, TSI, USB, Ethernet and CAN, has high-precision 16 ADC and 12
Position DAC.Control chip power 3 is 5V DC power supply, is powered for the control chip 2.Control the port PTB6 of chip 2
The 3D vision signal 1 is connect, the port PTE0 connects the recurrent pulses duty ratio adjusting circuit 4, and the port PTA6 connects three tunnel
Light-emitting LED 7 corresponding first MOS drive circuit input port, the port PTA11 connect three tunnel light-emitting LED 7 corresponding second
MOS drive circuit input port, the port PTA15 connect the corresponding third MOS drive circuit input terminal in three tunnel light-emitting LED 7
Mouthful.System initializes control chip 2 after setting up related caller；Second starting timer, for timing
Acquire the pulse signal of 3D vision signal 1；Third portion judges whether the pulse signal of timing acquiring 3D vision signal 1 has the period
Property, system enters 3D control model if having periodically, and the port PTA6 and the port PTA11 for controlling chip 2 export rectangle
Pulse signal, the port PTA15 not output signal, and the frequency cycle of the port PTA6 and the port PTA11 output rectangular pulse signal
Consistent with 3D vision signal 1, i.e., corresponding No. 1 optical fiber and No. 2 optical fiber carry out timesharing light on and off on the basis of 3D vision signal 1, and 3
Number optical fiber does not work；If the pulse signal of timing acquiring 3D vision signal 1 does not have periodically, system enters 2D control mould
Formula, the port PTA6, the end PTA11 and the port PTA15 for controlling chip 2 export high level signal, i.e., corresponding No. 1 optical fiber, No. 2
Optical fiber and No. 3 optical fiber all lights.4th judges whether the pulse signal of timing acquiring 3D vision signal 1 has always response, if
Signal responds always, returns to and judges whether to enter 3D control model；System finishing is run if signal is without response.
Auto-stereo display optical fiber backlight source timesharing driving circuit shown in Figure 3, of the invention, recurrent pulses duty
Include 5V DC power supply and a 1K Ω adjustable resistance (the 7th resistance R7) than adjusting circuit 4, is exported for adjusting control chip 2
To the recurrent pulses duty ratio of MOS drive circuit 5, circuit is followed by by 5V DC power anode and the connection of 1K Ω adjustable resistance
The port PTE0 for entering to control chip 2, the resistance value by adjusting adjustable resistance can change the input of the port PTE0 in control chip 2
Voltage obtains the regulated value of recurrent pulses duty ratio after carrying out ADC to the port PTE0 by control chip 2.
In Auto-stereo display optical fiber backlight source timesharing driving circuit of the invention, MOS drive circuit 5 includes 6 models
For metal-oxide-semiconductor field effect transistor (the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the 3rd MOS pipe Q3, the 4th metal-oxide-semiconductor Q4, the 5th MOS of D4184
Pipe Q5, the 6th metal-oxide-semiconductor Q6), the resistance (second resistance R2, the 4th resistance R4, the 6th resistance R6) that 3 resistance values are 10K Ω and 3
Resistance value is the resistance (first resistor R1,3rd resistor R3, the 5th resistance R5) of 1 Ω.Tri- tunnel 5 Fen Wei of MOS drive circuit, respectively
First MOS drive circuit (being made of the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, second resistance R2 and first resistor R1), second
MOS drive circuit (being made of third metal-oxide-semiconductor Q3, the 4th metal-oxide-semiconductor Q4, the 4th resistance R4 and 3rd resistor R3) and the 3rd MOS drive
Dynamic circuit (being made of the 5th metal-oxide-semiconductor Q5, the 6th metal-oxide-semiconductor Q6, the 6th resistance R6 and the 5th resistance R5), every road include 2 models
For the metal-oxide-semiconductor field effect transistor of D4184,1 resistance value be 10K Ω resistance and 1 resistance value be 1 Ω resistance, 2 model D4184
Metal-oxide-semiconductor field effect transistor carry out in parallel, the grid G of D4184 field-effect tube is connected and is connected with the resistance that resistance value is 1 Ω after parallel connection
The signal output port of chip 2 is controlled, the pulse signal issued by control chip 2 is waited；Another resistance value is the electricity of 10K Ω
It hinders and connects with the grid G of D4184 field-effect tube after parallel connection, and be connected with the end signal ground GND；D4184 field-effect tube after parallel connection
Source level S be connected with the end signal ground GND；Output end of the drain D of D4184 field-effect tube as MOS drive circuit 5 after parallel connection
And it is connected with light-emitting LED 7.The output end of first MOS drive circuit, the second MOS drive circuit and third MOS drive circuit point
First white light LEDs (D1), the second white light LEDs (D2) and third white light LEDs (D3) on three tunnel light-emitting LED 7 are not connect.Three tunnels
Light-emitting LED anode is connected after carrying out parallel connection with the end Vbat of the driving power 6, and cathode drives with the first MOS respectively
Circuit, the second MOS drive circuit are connected with third MOS drive circuit.Three tunnel light-emitting LED 7 and the driving power 6
Between have a driving power switch S1, pass through driving power switch S1 and control the driving power 6 and three tunnel light-emitting LED 7
Disconnection be connected to.
In Auto-stereo display optical fiber backlight source timesharing driving circuit of the invention, fiber optic bundle 8 by several fibers bundle and
At being divided into the first fiber optic bundle, the second fiber optic bundle and third fiber optic bundle to respectively correspond number is optical fiber 1., 2. and 3..Fiber optic bundle 8
Input terminal coupled with three tunnel light-emitting LED 7 so that three tunnels light-emitting LED 7 are imported light into optical fiber at work
Portion；The input terminal of first fiber optic bundle, the second fiber optic bundle and third fiber optic bundle respectively corresponds first white light LEDs, the second white light
LED and third white light LEDs.
Auto-stereo display optical fiber backlight source timesharing driving circuit of the invention, when Auto-stereo display optical fiber backlight source point
When the 3D vision signal 1 that receives of driving circuit when being in 3D mode, white LED light source corresponding to No. 1 optical fiber and No. 2 optical fiber
Module carries out time-sharing work, and timesharing frequency is consistent with the frequency of 3D vision signal 1, i.e. corresponding to No. 1 optical fiber and No. 2 optical fiber
The control signal of MOS drive circuit is reverse phase, as shown in Figure 5；The corresponding LED light source module of No. 3 optical fiber does not shine always, i.e., and 3
The control signal of MOS drive circuit corresponding to number optical fiber is low level, and the position of projecting beam is oriented corresponding to No. 3 optical fiber
It will form a dark space, viewer enabled to can't see image, viewer can be avoided to see mutually reverse left images and produce in this way
The feeling of raw dizziness.1. the light that number optical fiber issues is converted to the projecting beam 132 of orientation by lens, project viewer's
Left eye 142, the light that 2. number optical fiber issues are converted to the projecting beam 131 of orientation by lens, project viewer's right eye
141, the right and left eyes of such viewer just can see that two width differences have the image of parallax, then form 3D stereoscopic vision.When certainly
When the 3D vision signal 1 received by stereoscopic display optical fiber backlight source timesharing driving circuit is in low level state always, system
2D watching mode is worked in, the image that viewer's right and left eyes are seen at this time is completely the same, and there is no what left images mutually overturned to ask
Topic, so system all shines without setting dark space, lateral emitting optical fiber, i.e. No. 1 optical fiber, No. 2 optical fiber and No. 3 optical fiber institutes are right
The control signal of MOS drive circuit is answered to be all high level.
The above is only a specific embodiment of the present invention, but the design concept of the present invention is not limited to this, all to utilize this
Design makes a non-material change to the present invention, and should all belong to behavior that violates the scope of protection of the present invention.
Claims (8)
1. a kind of Auto-stereo display optical fiber backlight source timesharing driving circuit, comprising: 3D vision signal, control chip, control core
Piece power supply, recurrent pulses duty ratio adjusting circuit, MOS drive circuit, driving power, three tunnels are light-emitting LED and fiber optic bundle；It is described
MOS drive circuit includes the first MOS drive circuit, the second MOS drive circuit and third MOS drive circuit being connected；It is described
Light-emitting LED three tunnels include the first white light LEDs, the second white light LEDs and third white light LEDs in parallel；The fiber optic bundle includes first
Fiber optic bundle, the second fiber optic bundle and third fiber optic bundle；
The 3D vision signal is connected to provide display screen left images when playing 3D video film source with the control chip
Switching signal；The control chip power is connected with the control chip to provide power supply；The recurrent pulses duty
It is connected than adjusting circuit with the control chip to adjust the control chip and export to the periodicity of the MOS drive circuit
Pulse duty factor；The control chip and first MOS drive circuit, the second MOS drive circuit and third MOS drive circuit
It is respectively connected with to export cyclic pulse signal；First MOS drive circuit is connected with first white light LEDs；Institute
The second MOS drive circuit is stated to be connected with second white light LEDs；The third MOS drive circuit and the third white light LEDs
It is connected；First white light LEDs and first fiber bundle coupling；Second white light LEDs and the second fiber optic bundle coupling
It closes；The third white light LEDs and the third fiber bundle coupling；The driving power and the MOS drive circuit and described three
Road is light-emitting LED to be respectively connected with to provide power supply.
2. Auto-stereo display optical fiber backlight source timesharing driving circuit according to claim 1, which is characterized in that the electricity
Road further includes that the light-emitting LED power switch between the driving power in three tunnel is arranged in；The driving power switch control
Make the driving power and the light-emitting LED disconnection in three tunnel be connected to.
3. Auto-stereo display optical fiber backlight source timesharing driving circuit according to claim 1, which is characterized in that described
One MOS drive circuit includes the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, first resistor and second resistance；The second MOS drive circuit packet
Include third metal-oxide-semiconductor, the 4th metal-oxide-semiconductor, 3rd resistor and the 4th resistance；The third MOS drive circuit includes the 5th metal-oxide-semiconductor, the
Six metal-oxide-semiconductors, the 5th resistance and the 6th resistance；
One end of the first resistor is connected with the control chip；The other end of the first resistor and the second resistance
One end, the grid of first metal-oxide-semiconductor and the grid of second metal-oxide-semiconductor be respectively connected with；The drain electrode of first metal-oxide-semiconductor
First white light LEDs are connected to after being connected with the drain electrode of second metal-oxide-semiconductor；
One end of the 3rd resistor is connected with the control chip；The other end of the 3rd resistor and the 4th resistance
One end, the grid of the third metal-oxide-semiconductor and the grid of the 4th metal-oxide-semiconductor be respectively connected with；The drain electrode of the third metal-oxide-semiconductor
Second white light LEDs are connected to after being connected with the drain electrode of the 4th metal-oxide-semiconductor；
One end of 5th resistance is connected with the control chip；The other end and the 6th resistance of 5th resistance
One end, the grid of the 5th metal-oxide-semiconductor and the grid of the 6th metal-oxide-semiconductor be respectively connected with；The drain electrode of 5th metal-oxide-semiconductor
The third white light LEDs are connected to after being connected to the drain of the sixth mos tube；
The other end of the second resistance, the source electrode of first metal-oxide-semiconductor, the source electrode of second metal-oxide-semiconductor, the 4th resistance
The other end, the source electrode of the third metal-oxide-semiconductor, the source electrode of the 4th metal-oxide-semiconductor, the other end of the 6th resistance, described
The source grounding of the source electrode of five metal-oxide-semiconductors and the 6th metal-oxide-semiconductor.
4. Auto-stereo display optical fiber backlight source timesharing driving circuit according to claim 3, which is characterized in that described
The cathode of one white light LEDs and the drain electrode of first metal-oxide-semiconductor and second metal-oxide-semiconductor are respectively connected with；Second white light LEDs
The drain electrode of cathode and the third metal-oxide-semiconductor and the 4th metal-oxide-semiconductor be respectively connected with；The cathode of the third white light LEDs with
The drain electrode of 5th metal-oxide-semiconductor and the 6th metal-oxide-semiconductor is respectively connected with；It is the anode of first white light LEDs, described second white
The anode of light LED is connected with the anode of the third white light LEDs is connected to the driving power.
5. Auto-stereo display optical fiber backlight source timesharing driving circuit according to claim 1, which is characterized in that the week
It includes the 7th adjustable resistance that phase property pulse duty factor, which adjusts circuit,；Described 7th adjustable resistance one end and the control chip power
It is connected, the other end is connected with the control chip.
6. Auto-stereo display optical fiber backlight source timesharing driving circuit according to claim 1, which is characterized in that the control
Coremaking piece model MK60DN512ZVLQ10.
7. Auto-stereo display optical fiber backlight source timesharing driving circuit according to claim 1, which is characterized in that the control
Chip power processed is 5V DC power supply.
8. Auto-stereo display optical fiber backlight source timesharing driving circuit according to claim 1, which is characterized in that the drive
Dynamic power supply is 9V DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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