CN206163103U - Compatible controlling means of mobile terminal major -minor screen - Google Patents
Compatible controlling means of mobile terminal major -minor screen Download PDFInfo
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- CN206163103U CN206163103U CN201621183912.8U CN201621183912U CN206163103U CN 206163103 U CN206163103 U CN 206163103U CN 201621183912 U CN201621183912 U CN 201621183912U CN 206163103 U CN206163103 U CN 206163103U
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Abstract
The utility model discloses a compatible controlling means of mobile terminal major -minor screen, including processing module and connected interface module, interface module connects LCD display screen and touch -sensitive screen, processing module exports reset signal according to the touch position sigual of interface module transmission's touch -sensitive screen, and regional data signal, control signal, clock signal and the electric current in a poor light of corresponding touch is through operating condition, the regional operating condition and the luminance of touch of interface module output control LCD display screen, stepping down to battery voltage, each operating voltage of output is the touch -sensitive screen and the LCD display screen is supplied power, processing module resets according to touch -sensitive screen response touch operation's interrupt signal control touch -sensitive screen: can the dynamic adjustment regional operating condition and the luminance of touch, need not all -screen adjustment, can realize multiwindow simultaneous display and operation, can also be when the trouble automatic re -setting, solved that large -size screen monitors terminal consumption is great, battery time of endurance short, battery power utilizes insufficiently, can not automatic prosthetic problem during the trouble.
Description
Technical field
The utility model is related to display screen technology field, more particularly to a kind of compatible control of mobile terminal main-auxiliary screen
Device.
Background technology
Mobile terminal comes into already the life of majority as consumer electronicses, using it is most be smart mobile phone.Large-size screen monitors
Mobile phone is increasingly becoming the main flow of smart mobile phone, and giant-screen and high definition resolution ratio become the standard configuration of smart mobile phone.Large scale, high-resolution
The screen display of rate makes user obtain the unexistent visual experience of function machine epoch.On large scale high definition screen, Ren Menke
To watch the film and video of high definition, browse the picture and photo of fine definition.Larger sized screen obtains preferably aobvious
Show effect, after screen size increase, screen resolution has also arrived accordingly lifting.PPI（Physical resolution）And DPI（Element is big
It is little）Lifting, make large-screen mobile phone obtain more preferable display effect.But giant-screen there is also shortcomings and deficiency.
Regular handset screen can only be shown and be operated to single interface, be not carried out to screen and battery electric quantity
Effectively utilizes, can only carry out brightness and picture adjustment to full screen, and system operation data amount and power consumption are larger, greatly reduce
Battery life.Meanwhile, the screen display of fine definition increased GPU（Graphic Processing Unit, at figure
Reason device）Pressure, can cause even the problems such as show system interim card, crash, mobile terminal can not be repaired automatically.
Thus prior art could be improved and improve.
Utility model content
In view of above-mentioned the deficiencies in the prior art part, the purpose of this utility model is to provide a kind of mobile terminal main-auxiliary screen
Compatible control device, solving that existing large-size screen monitors power consumption of terminal is big, battery life is short, can not make full use of battery electric quantity,
The problem that can not be repaired automatically during failure.
In order to achieve the above object, the utility model takes technical scheme below：
A kind of compatible control device of mobile terminal main-auxiliary screen, external LCD display and touch-screen, it includes processing module
And interface module；
The touch location number of the interface module transmission touch-screen gives processing module；Processing module is according to touch location signal
Output reset signal, the data-signal of corresponding touch area, control signal, clock signal and back facet current, by interface module
The working condition of output control LCD display and the working condition of the touch area and brightness；Processing module is also to battery electricity
Pressure is depressured, is exported, and the operating voltage of different pressure values is transferred to touch-screen by interface module and LCD display is powered；
Interface module receives the interrupt signal of touch-screen response touch operation and is simultaneously transferred to processing module, processing module according to
Interrupt signal is generated touch-screen reset signal, is resetted by interface module output control touch-screen：
The processing module connection interface module, interface module connection LCD display and touch-screen.
In the compatible control device of described mobile terminal main-auxiliary screen, the processing module includes：
Central processing unit, for according to the data-signal of the corresponding touch area of touch location signal output, control signal, when
Clock signal is controlling the working condition of the touch area on LCD display；Output reset signal resets to LCD display,
And touch-screen is resetted according to the interrupt signal generation touch-screen reset signal of input；
Backlight circuit unit, for the square wave control signal that sent according to central processing unit adjust corresponding back facet current with
The backlight illumination of touch area on adjustment LCD display；
PMU, required for reduced output voltage touch-screen and LCD display work are carried out to cell voltage
Operating voltage；
The central processing unit connects backlight circuit unit, PMU connection interface module.
In the compatible control device of described mobile terminal main-auxiliary screen, the peripheral circuit of the central processing unit includes first
Electromagnetic interface filter, the second electromagnetic interface filter, the 3rd electromagnetic interface filter, the 4th electromagnetic interface filter and the 5th electromagnetic interface filter；
The 2nd pin, the one-to-one connection of the 1st pin respectively with the first electromagnetic interface filter of N2 pin, the N1 pin of the central processing unit；
The 2nd pin, the one-to-one connection of the 1st pin respectively with the second electromagnetic interface filter of R2 pin, the P2 pin of central processing unit；Central processing unit
The 2nd pin, the one-to-one connection of the 1st pin respectively with the 3rd electromagnetic interface filter of R3 pin, P3 pin；The N3 pin of central processing unit, M3 pin difference
The 2nd pin, the one-to-one connection of the 1st pin with the 4th electromagnetic interface filter；M1 pin, the M2 pin of central processing unit is filtered respectively with the 5th EMI
2nd pin of device, the one-to-one connection of the 1st pin；First electromagnetic interface filter ~ the 3rd pin of the 5th electromagnetic interface filter, the 4th pin are all connected with interface
Module, the AH31 pin connection backlight circuit unit of central processing unit；The W4 pin of central processing unit, AA5 pin, AH11 pin, AE28 pin,
AE27 pin, AB30 pin, AB31 pin are all connected with interface module.
In the compatible control device of described mobile terminal main-auxiliary screen, the backlight circuit unit includes backlight boosting core
Piece, the first inductance, diode, the first electric capacity, first resistor and second resistance；
One end and one end of the first inductance of the IN pin connection first resistor of backlight boost chip, the other end of first resistor
The positive pole of connection battery-end, the CTRL pin of backlight boost chip connect the AH31 pin of central processing unit, the LX of backlight boost chip
Pin connects the other end of the first inductance and the positive pole of diode, the FB pin connection interface modules of backlight boost chip；Diode
Negative pole connects one end of second resistance, also passes through the first capacity earth；The other end connection interface module of second resistance.
In the compatible control device of described mobile terminal main-auxiliary screen, the backlight circuit unit also include the second electric capacity and
3rd resistor；
Between the IN pin and ground of backlight boost chip, 3rd resistor is connected to backlight boosting core to second capacitance connection
Between the CTRL pin of piece and ground.
In the compatible control device of described mobile terminal main-auxiliary screen, the backlight circuit unit also include the 3rd electric capacity,
4th electric capacity and the 4th resistance；
One end of 3rd electric capacity connects the COMP pin of backlight boost chip, and the other end connection the 4th of the 3rd electric capacity is electric
One end and ground of resistance, the FB pin and interface module of the other end connection backlight boost chip of the 4th resistance, one end of the 4th electric capacity
The other end and interface module of connection second resistance, the other end ground connection of the 4th electric capacity.
In the compatible control device of described mobile terminal main-auxiliary screen, the PMU includes power management core
Piece, crystal oscillator, the 5th electric capacity and the 6th electric capacity；The AVDD45_LDO1 pin of the power management chip, AVDD45_LDO2 pin,
AVDD45_LDO3 pin, AVDD45_LDO4 pin, AVDD45_LDO5 pin are all connected with the positive pole of battery-end；Power management chip
VGP1 pin, VIO18 pin, VIO28 pin are all connected with interface module；The AVDD28_RTC pin connection feeder ear of power management chip, electricity
The other end of the XIN pin connection crystal oscillator of source control chip and one end of the 6th electric capacity, the XOUT pin connection of power management chip is brilliant
The one end for shaking and one end of the 5th electric capacity, the other end of the 5th electric capacity and the other end ground connection of the 6th electric capacity.
In the compatible control device of described mobile terminal main-auxiliary screen, the PMU also include the 5th resistance and
7th electric capacity；
The AVDD28_RTC pin and feeder ear VRTC of one end connection power management chip of the 5th resistance, the 5th resistance
The other end pass through the 7th capacity earth.
In the compatible control device of described mobile terminal main-auxiliary screen, the interface module includes LCM interfaces, the second inductance
With the 6th resistance；
2nd pin, the 3rd pin, the 4th pin, the 28th pin, the 29th pin, the 30th pin, the 31st pin of the LCM interfaces sequentially respectively with
The AH11 pin of central processing unit, W4 pin, AA5 pin, AE28 pin, AB30 pin, AB31 pin, the one-to-one connection of AE27 pin；LCM interfaces
The VIO18 pin that 5th pin passes through the second inductance connection power management chip, the 6th pin of LCM interfaces connects power supply by the 6th resistance
The VIO28 pin of managing chip, the 32nd pin of LCM interfaces connects the H4 pin of power management chip；9th pin of LCM interfaces, the 10th
Pin, the 12nd pin, the 13rd pin, the 15th pin, the 16th pin, the 18th pin, the 19th pin, the 21st pin, the 22nd pin sequentially respectively with the 3rd EMI filter
4th pin of ripple device, the 3rd pin of the 3rd electromagnetic interface filter, the 4th pin of the first electromagnetic interface filter, the 3rd pin of the first electromagnetic interface filter,
4th pin of four electromagnetic interface filters, the 3rd pin of the 4th electromagnetic interface filter, the 4th pin of the 5th electromagnetic interface filter, the 5th electromagnetic interface filter
3rd pin, the 4th pin of the second electromagnetic interface filter, the one-to-one connection of the 3rd pin of the second electromagnetic interface filter；The 24th pin connection of LCM interfaces
The other end of second resistance, the 25th pin of LCM interfaces connects the FB pin of backlight boost chip.
In the compatible control device of described mobile terminal main-auxiliary screen, the central processing unit is using model MT6737
Four core pieces, model ET5120A of backlight boost chip, model MT6328V/A of power management chip, LCM interfaces
Model FH26-33S-0.3SHW.
The compatible control device of the mobile terminal main-auxiliary screen provided compared to prior art, the utility model, external LCD shows
Display screen and touch-screen；Compatible control device includes processing module and interface module, processing module connection interface module, interface module
Connection LCD display and touch-screen；The touch location signal of interface module transmission touch-screen is to processing module；Processing module according to
Touch location signal output reset signal, the data-signal of corresponding touch area, control signal, clock signal and back facet current,
Working condition and working condition and the brightness of the touch area by interface module output control LCD display；Process mould
Block is also depressured to cell voltage, is exported, and the operating voltage of different pressure values is transferred to touch-screen by interface module and LCD is aobvious
Display screen is powered；Interface module receives the interrupt signal of touch-screen response touch operation and is transferred to processing module, processing module root
Touch-screen reset signal is generated according to interrupt signal, is resetted by interface module output control touch-screen.It is adapted dynamically Petting Area
The working condition in domain and brightness, without the need for full frame adjustment, can realize that multiwindow shows and operates simultaneously, moreover it is possible to automatically multiple in failure
Position, solves that large-size screen monitors power consumption of terminal is larger, battery life is short, and battery electric quantity can not be repaiied automatically using insufficient during failure
Multiple problem.
Description of the drawings
Fig. 1 is the structured flowchart of the compatible control device of the mobile terminal main-auxiliary screen that the utility model is provided.
Fig. 2 be the utility model provide mobile terminal main-auxiliary screen compatible control device in central processing unit circuit
Figure.
Fig. 3 be the utility model provide mobile terminal main-auxiliary screen compatible control device in backlight circuit unit circuit
Figure.
Fig. 4 be the utility model provide mobile terminal main-auxiliary screen compatible control device in PMU circuit
Figure.
Fig. 5 be the utility model provide mobile terminal main-auxiliary screen compatible control device in interface module circuit diagram.
Specific embodiment
The utility model provides a kind of compatible control device of mobile terminal main-auxiliary screen.For make the purpose of this utility model,
Technical scheme and advantage are clearer, clear and definite, and the embodiment that develops simultaneously referring to the drawings is further described to the utility model.
It should be appreciated that specific embodiment described herein is not used to limit the utility model only to explain the utility model.
Fig. 1 is referred to, the compatible control device of the mobile terminal main-auxiliary screen that the utility model is provided includes processing module 10
With interface module 20.The connection interface module 20 of the processing module 10, the external LCD display of interface module 20 and touch-screen（TP
, Touch Panel）.The touch location signal of the transmission touch-screen of the interface module 20 is to processing module 10.Processing module 10
According to touch location signal output reset signal, the data-signal of corresponding touch area, control signal, clock signal and backlight electricity
Stream, the working condition and working condition and the brightness of the touch area by the output control LCD display of interface module 20；Place
Reason module 10 also carries out buck, the operating voltage of the different pressure values of output to cell voltage and is transferred to touch by interface module 20
Screen and LCD display are powered.Interface module 20 receives the interrupt signal of touch-screen response touch operation and is transferred to process
Module 10, processing module 10 is according to interrupt signal generation touch-screen reset signal, by the output control touch-screen of interface module 20
Reset.
The processing module 10 includes central processing unit 110（That is CPU）, backlight circuit unit (Back Light) 120 Hes
PMU 130（That is PMU, power management unit）.Wherein, the control of central processing unit 110 whole system,
Data-signal, control signal, clock signal and reset signal are provided.Backlight circuit unit 120 is exported according to central processing unit 110
Square wave control signal adjust corresponding back facet current.PMU 130 provides corresponding power supply for system, i.e., to battery electricity
Pressure carries out buck, the operating voltage of the different pressure values of output.The central processing unit connects backlight circuit unit, power management list
First connection interface module.
See also Fig. 2, the central processing unit（CPU）110 MTK for adopting model MT6737（MediaTek Inc.）Four
Core piece, clock frequency is 1.3GHZ.The peripheral circuit of central processing unit 110 is filtered including the first electromagnetic interface filter Z1, the 2nd EMI
Ripple device Z2, the 3rd electromagnetic interface filter Z3, the 4th electromagnetic interface filter Z4 and the 5th electromagnetic interface filter Z5；The N2 pin of central processing unit 110,
The 2nd pin, the one-to-one connection of the 1st pin respectively with the first electromagnetic interface filter Z1 of N1 pin；The R2 pin of central processing unit 110, P2 pin difference
The 2nd pin, the one-to-one connection of the 1st pin with the second electromagnetic interface filter Z2；R3 pin, the P3 pin of central processing unit 110 is respectively with the 3rd
2nd pin of electromagnetic interface filter Z3, the one-to-one connection of the 1st pin；N3 pin, the M3 pin of central processing unit 110 is filtered respectively with the 4th EMI
2nd pin of device Z4, the one-to-one connection of the 1st pin；M1 pin, the M2 pin of central processing unit 110 is respectively with the of the 5th electromagnetic interface filter Z5
2 pin, the one-to-one connection of the 1st pin；First electromagnetic interface filter Z1 ~ the 3rd pin of the 5th electromagnetic interface filter Z5, the 4th pin are all connected with interface mould
Block 20, the AH31 pin connection backlight circuit unit 120 of central processing unit 110；The W4 pin of central processing unit 110, AA5 pin, AH11
Pin, AE28 pin, AE27 pin, AB30 pin, AB31 pin are all connected with interface module 20.
Wherein, the output of central processing unit 110 TDP0/TDN0, tetra- groups of MIPI of TDP1/TDN1, TDP2/TDN2, TDP3/TDN3
(high speed data transfer signal) and one group of clock signal TCP/TCN, through 5 EMI（Electromagnetic interference）It is transferred to after wave filter
Interface module 20, then by the peripheral device of interface module 20（That is LCD display and touch-screen）Transmission data and clock are same
Step signal.EMI（Electromagnetic interference）The effect of wave filter is shielding outside electromagnetic interference.Each group of MIPI is comprising two difference
Signal, is different from the way of a traditional piece ground wire of holding wire, differential transfer all transmission signal in this both threads, and this two
The amplitude of individual signal is equal, opposite in phase.The design advantage of difference cabling is that isolation outer signals are disturbed, antijamming capability
By force, can effective suppression electromagnetic interference（EMI）, sequential accurate positioning, transmission quality height.Central processing unit 110 also passes through square wave control
Signal DISP_PWM0 processed is the square wave control that backlight circuit unit 120 provides pulsed, adjusts this square wave control signal DISP_
The dutycycle of PWM0 can control the back facet current of the output of backlight circuit unit 120, the size control LCD of the back facet current shows
Screen and the backlight illumination of touch area.Reset signal LCM_RST is used to reset LCD display, to ensure LCD display
Show normal, it is to avoid because causing flower screen, interim card or screen etc. now to show bad the problems such as interference, shake.Frame synchronizing signal
DSI_TE can be used for ESD（Electro-Static discharge, Electro-static Driven Comb）Detection.CPU is also carried out to touch-screen simultaneously
Control, the action touched come receive user by interrupt signal EINT_CTP.User produces interrupt signal EINT_ when touching TP
CTP is transferred to CPU by interface module 20.CPU is judged and responded according to the change of the level of interrupt signal EINT_CTP.When
CPU judges to send touch-screen reset signal GPIO_CTP_RST during touch-screen operation irregularity, is transferred to TP by interface module 20
Resetted.SCL1/SDA1 is one group of I2C signal, due to two peripheral hardwares of LCD display and TP equivalent to CPU.CPU passes through
I2C signals control LCD display and TP working conditions.A screen can only be controlled every time, the control of the two screens is total to
Use I2C signals（SCL1/SDA1）.The model of the first electromagnetic interface filter Z1 ~ the 5th electromagnetic interface filter Z5 is identical, is EXC14CE900U.
In the specific implementation, when user is operated in display screen interface, due to the electric conductivity of human body, electricity can be changed
The size of appearance formula touch screen surface capacitance, while producing interrupt signal EINT_CTP.According to the change of capacitance, in touch-screen
Touch-control IC can calculate electric shock coordinate, the voltage change situation of touch-control IC monitor in real time touch-screens, and record touch point
Position, positional information is in the form of I2C signals and interrupt signal EINT_CTP passes to CPU.CPU reruns the touch point
Corresponding program is controlled to display screen.In this process, backlight circuit unit is for needed for LCD display provides screen
Backlight current, PMU 130 provides power supply for whole system.CPU passes through 5 groups of MIPI signals（TDP0/TDN0~
TDP3/TDN3, TCP/TCN）Display data and frame synchronizing signal are provided for LCD display.CPU can also by I2C signals and
Interrupt signal EINT_CTP carries out different controls to judge user to the different operating of TP：Such as clicking can open a window
Mouthful, window can be zoomed in or out with double finger scalings, double-click can recover full screen display, and singly giving directions window to drag can move
Dynamic and regulation the window's position, can realize overlapping or being displayed side by side between different windows by mobile.CPU can be by control
Pwm signal and I2C signals so as to the regulation of feasible region display brightness, are reached just adjusting the brightness of different display windows
In operation, battery electric quantity is saved, extend the purpose of service time of battery.
See also Fig. 3, the backlight circuit unit 120 include backlight boost chip U1 of model ET5120A, the
One inductance L1, diode D1, the first electric capacity C1, first resistor R1 and second resistance R2；The IN pin of backlight boost chip U1
One end of connection first resistor R1 and one end of the first inductance L1, the other end connection battery-end of first resistor R1（Such as battery
Positive pole）, the AH31 pin of the CTRL pin connection central processing unit 110 of backlight boost chip U1, the LX pin company of backlight boost chip U1
Connect the other end of the first inductance L1 and the positive pole of diode D1, the FB pin connection interface module 20 of backlight boost chip U1；Two poles
The negative pole of pipe D1 is connected one end of second resistance R2, is also grounded by the first electric capacity C1；The other end of second resistance R2 connects
Mouth mold block 20.
Above-mentioned device constitutes together the boost booster circuits of a DC-DC, and power supply is provided by cell voltage VBAT, according to
The dutycycle of the square wave control signal DISP_PWM0 of input exports back facet current LEDA/LEDK, the back facet current of correspondence size
LEDA/LEDK is transferred to LCD display by interface module 20, to control the backlight illumination of LCD display or touch area.Compared with
Goodly, the capacitance of the first electric capacity C1 is 1UF, and the first inductance L1 is power inductance（Inductance value is 22UH）, diode D1 is
Schottky diode, second resistance R2 can be 0 Ω resistance.
In further embodiment, the backlight circuit unit 120 also includes the second electric capacity C2 and 3rd resistor R3；Described
Two electric capacity C2 are connected between the IN pin of backlight boost chip U1 and ground, and 3rd resistor R3 is connected to backlight boost chip U1
Between CTRL pin and ground.Wherein, the capacitance of the second electric capacity C2 is 10UF, and the work of backlight boost chip U1 can be made more stable.The
Three resistance R3 drag down on CTRL pin when backlight boost chip U1 does not work, it is to avoid interference and by mistake boosting.
In further embodiment, the backlight circuit unit 120 is also electric including the 3rd electric capacity C3, the 4th electric capacity C4 and the 4th
Resistance R4；One end of the 3rd electric capacity C3 connects the COMP pin of backlight boost chip U1, the other end connection of the 3rd electric capacity C3 the
One end and ground of four resistance R4, the FB pin and interface module 20 of other end connection backlight boost chip U1 of the 4th resistance R4, the
The other end and interface module 20 of one end connection second resistance R2 of four electric capacity C4, the other end ground connection of the 4th electric capacity C4.Wherein,
3rd electric capacity C3（Capacitance is 220nF）Make back facet current LEDK more stable with the 4th resistance R4.4th electric capacity C4（Capacitance is
33pF）Filtering make back facet current LEDA more stable.
See also Fig. 4, the PMU 120（PMU）Including the power management core of model MT6328V/A
Piece U2, crystal oscillator X, the 5th electric capacity C5 and the 6th electric capacity C6；AVDD45_LDO1 pin, the AVDD45_ of the power management chip U2
LDO2 pin, AVDD45_LDO3 pin, AVDD45_LDO4 pin, AVDD45_LDO5 pin are all connected with battery-end；Power management chip U2's
VGP1 pin, VIO18 pin, VIO28 pin are all connected with interface module 20；The AVDD28_RTC pin connection feeder ear of power management chip U2
The other end of the XIN pin connection crystal oscillator X of VRTC, power management chip U2 and one end of the 6th electric capacity C6, power management chip U2
XOUT pin connection crystal oscillator X one end and one end of the 5th electric capacity C5, the other end of the 5th electric capacity C5 and the 6th electric capacity C6 it is another
One end is grounded.
The power supply of the power management chip U2 is directly provided by cell voltage VBAT, is its built-in LDO（low
Dropout regulator, low pressure difference linear voltage regulator, its pin includes the institute of the LDO INPUT and LDO OUTPUT in figure
There is pin）Power supply is provided.LDO exports first voltage VIO18_PMU and second voltage VIO28_PMU is exported by interface module 20
To LCD display, to meet the operating voltage of each signal demand of LCD display.The tertiary voltage VGP1_2V8 of LDO outputs
TP being output as also by interface module 20, operating voltage is provided.Crystal oscillator X is 32.768KHZ crystal oscillators, is the heart of whole mobile phone, is
Power management chip U2 and system provide necessary clock frequency.5th electric capacity C5 and the 6th electric capacity C6（Capacitance is 22pF）It is right
Clock frequency is filtered denoising.As long as there is battery（Voltage is more than 2.5V）, feeder ear VRTC just has voltage.
In further embodiment, the AVDD45_LDO1 pin of the power management chip U2, AVDD45_LDO2 pin,
AVDD45_LDO3 pin, AVDD45_LDO4 pin, AVDD45_LDO5 pin pass through respectively a 2.2uF capacity earth, with to input
Power supply is filtered, and makes power management chip U2 power more stable.
In further embodiment, in order that the voltage of feeder ear VRTC is more stable, the PMU 120 is also wrapped
Include the 5th resistance R5 and the 7th electric capacity C7（Capacitance is 22UF）；One end connection power management chip U2's of the 5th resistance R5
AVDD28_RTC pin and feeder ear VRTC, the other end of the 5th resistance R5 is grounded by the 7th electric capacity C7.
The interface module 20 includes LCM interface J, the second inductance L2 and the 6th resistance R6；The 2nd of the LCM interfaces J
Pin, the 3rd pin, the 4th pin, the 28th pin, the 29th pin, the 30th pin, the 31st pin sequentially respectively with AH11 pin, the W4 of central processing unit 110
Pin, AA5 pin, AE28 pin, AB30 pin, AB31 pin, the one-to-one connection of AE27 pin；5th pin of LCM interface J passes through the second inductance L2
The VIO18 pin of connection power management chip U2, the 6th pin of LCM interface J connects power management chip U2 by the 6th resistance R6
VIO28 pin, the 32nd pin of LCM interface J connects the H4 pin of power management chip U2；9th pin of LCM interface J, the 10th pin,
12 pin, the 13rd pin, the 15th pin, the 16th pin, the 18th pin, the 19th pin, the 21st pin, the 22nd pin sequentially respectively with the 3rd electromagnetic interface filter
4th pin of Z3, the 3rd pin of the 3rd electromagnetic interface filter Z3, the 4th pin of the first electromagnetic interface filter Z1, the 3rd of the first electromagnetic interface filter Z1 the
Pin, the 4th pin of the 4th electromagnetic interface filter Z4, the 3rd pin of the 4th electromagnetic interface filter Z4, the 4th pin of the 5th electromagnetic interface filter Z5, the 5th
3rd pin of electromagnetic interface filter Z5, the 4th pin of the second electromagnetic interface filter Z2, the one-to-one connection of the 3rd pin of the second electromagnetic interface filter Z2；
24th pin of LCM interface J connects the other end of second resistance R2, and the 25th pin of LCM interface J connects the FB of backlight boost chip U1
Pin.
The LCM interfaces J it comprises LCD and shown using the ZIF connector of model FH26-33S-0.3SHW of 33PIN
All signals of display screen and TP.It is specific as follows：LCM_DATA_P0/ LCM_DATA_N0, LCM_DATA_P1/LCM_DATA_
N1, LCM_DATA_P2/LCM_DATA_N2, LCM_DATA_P3/ LCM_DATA_N3 provided by electromagnetic interface filter for CPU four
Group MIPI data-signals, LCM_DATA_P/ LCM_DATA_N cross the clock sync signal that electromagnetic interface filter is provided for CPU.Backlight
Electric current LEDA/LEDK is that backlight circuit unit is provided, and for LCD display back facet current source is provided.First voltage VIO18_PMU
It is the operating voltage that PMU exports the various signals provided to LCD display with second voltage VIO28_PMU.Tertiary voltage VGP1_
2V8 is the operating voltage provided to TP.GPIO_LCD_ID signals are that LCD display and TP are exported to the ADC detection signals of CPU,
Its detection level range is 0.05Vmin ~ 1.45Vmax, and effect is for distinguishing the LCD display and TP that access according to different ID
Type, different level representatives different LCD or TP.
In further embodiment, in order that first voltage VIO18_PMU, second voltage VIO28_PMU and tertiary voltage
VGP1_2V8 is more stable, and the interface module 20 also includes the 8th electric capacity C8, the 9th electric capacity C9, the tenth electric capacity C10 and first
TVS（TRANSIENT VOLTAGE SUPPRESSOR）Pipe T1；One end of the 8th electric capacity C8 is connected by the 6th resistance R6
6th pin of LCM interface J, one end of the 9th electric capacity C9 connects the 5th pin of LCM interface J, the tenth electric capacity C10 by the second inductance L2
One end connect the first TVS pipe T1 one end and LCM interface J the 32nd pin；The other end of the 8th electric capacity C8, the 9th electric capacity C9
The other end, the other end of the tenth electric capacity C10, the other end of the first TVS pipe T1 are grounded.Touch-screen is that human contact is most on mobile phone
Many parts, the TVS pipe on TP circuits can effectively prevent infringement of user's electrostatic in use to mobile phone.
In sum, the compatible control device of mobile terminal main-auxiliary screen of the present utility model is adapted dynamically touch area
Working condition and brightness, without the need for full frame adjustment, can realize that multiwindow shows and operates simultaneously, moreover it is possible to automatically reset in failure,
Solve that large-size screen monitors power consumption of terminal is larger, battery life is short, battery electric quantity can not be repaired automatically using insufficient during failure
Problem.
It should be appreciated that application of the present utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
Say, can according to the above description be improved or be converted, all these modifications and variations should all belong to the appended power of the utility model
The protection domain that profit is required.
Claims (10)
1. a kind of compatible control device of mobile terminal main-auxiliary screen, external LCD display and touch-screen, it is characterised in that include
Processing module and interface module；
The touch location signal of the interface module transmission touch-screen is to processing module；Processing module is defeated according to touch location signal
Go out reset signal, the data-signal of corresponding touch area, control signal, clock signal and back facet current are defeated by interface module
Go out to control the working condition of LCD display and the working condition of the touch area and brightness；Processing module is also to cell voltage
The operating voltage for being depressured, being exported different pressure values is transferred to touch-screen and LCD display is powered by interface module；
Interface module receives the interrupt signal of touch-screen response touch operation and is transferred to processing module, and processing module is according to interruption
Signal generation touch-screen reset signal, by interface module output control touch-screen reset：
The processing module connection interface module, interface module connection LCD display and touch-screen.
2. the compatible control device of mobile terminal main-auxiliary screen according to claim 1, it is characterised in that the processing module
Including：
Central processing unit, for according to the data-signal of the corresponding touch area of touch location signal output, control signal, clock letter
Number with control LCD display on the touch area working condition；Output reset signal resets to LCD display, and
Touch-screen reset signal is generated according to the interrupt signal of input to reset touch-screen；
Backlight circuit unit, the square wave control signal for being sent according to central processing unit adjusts corresponding back facet current to adjust
The backlight illumination of touch area on LCD display；
PMU, for the work required for reduced output voltage touch-screen and LCD display work are carried out to cell voltage
Make voltage；
The central processing unit connects backlight circuit unit, PMU connection interface module.
3. the compatible control device of mobile terminal main-auxiliary screen according to claim 2, it is characterised in that the central authorities are processed
The peripheral circuit of device includes the first electromagnetic interface filter, the second electromagnetic interface filter, the 3rd electromagnetic interface filter, the 4th electromagnetic interface filter and the 5th
Electromagnetic interface filter；
The 2nd pin, the one-to-one connection of the 1st pin respectively with the first electromagnetic interface filter of N2 pin, the N1 pin of the central processing unit；Central authorities
The 2nd pin, the one-to-one connection of the 1st pin respectively with the second electromagnetic interface filter of R2 pin, the P2 pin of processor；The R3 pin of central processing unit,
The 2nd pin, the one-to-one connection of the 1st pin respectively with the 3rd electromagnetic interface filter of P3 pin；N3 pin, the M3 pin of central processing unit is respectively with
2nd pin of four electromagnetic interface filters, the one-to-one connection of the 1st pin；M1 pin, the M2 pin of central processing unit respectively with the 5th electromagnetic interface filter
2nd pin, the one-to-one connection of the 1st pin；First electromagnetic interface filter ~ the 3rd pin of the 5th electromagnetic interface filter, the 4th pin are all connected with interface module,
The AH31 pin connection backlight circuit unit of central processing unit；The W4 pin of central processing unit, AA5 pin, AH11 pin, AE28 pin, AE27
Pin, AB30 pin, AB31 pin are all connected with interface module.
4. the compatible control device of mobile terminal main-auxiliary screen according to claim 3, it is characterised in that the backlight circuit
Unit includes backlight boost chip, the first inductance, diode, the first electric capacity, first resistor and second resistance；
One end and one end of the first inductance of the IN pin connection first resistor of backlight boost chip, the other end connection of first resistor
The positive pole of battery-end, the CTRL pin of backlight boost chip connect the AH31 pin of central processing unit, and the LX pin of backlight boost chip connect
Connect the other end of the first inductance and the positive pole of diode, the FB pin connection interface modules of backlight boost chip；The negative pole of diode
Connect one end of second resistance, also pass through the first capacity earth；The other end connection interface module of second resistance.
5. the compatible control device of mobile terminal main-auxiliary screen according to claim 4, it is characterised in that the backlight circuit
Unit also includes the second electric capacity and 3rd resistor；
Between the IN pin and ground of backlight boost chip, 3rd resistor is connected to backlight boost chip to second capacitance connection
Between CTRL pin and ground.
6. the compatible control device of mobile terminal main-auxiliary screen according to claim 5, it is characterised in that the backlight circuit
Unit also includes the 3rd electric capacity, the 4th electric capacity and the 4th resistance；
One end of 3rd electric capacity connects the COMP pin of backlight boost chip, and the other end of the 3rd electric capacity connects the 4th resistance
One end and ground, the FB pin and interface module of the other end connection backlight boost chip of the 4th resistance, one end connection of the 4th electric capacity
The other end and interface module of second resistance, the other end ground connection of the 4th electric capacity.
7. the compatible control device of mobile terminal main-auxiliary screen according to claim 5, it is characterised in that the power management
Unit includes power management chip, crystal oscillator, the 5th electric capacity and the 6th electric capacity；The AVDD45_LDO1 pin of the power management chip,
AVDD45_LDO2 pin, AVDD45_LDO3 pin, AVDD45_LDO4 pin, AVDD45_LDO5 pin are all connected with battery-end；Power management
The VGP1 pin of chip, VIO18 pin, VIO28 pin are all connected with interface module；The AVDD28_RTC pin connection power supply of power management chip
End, the other end of the XIN pin connection crystal oscillator of power management chip and one end of the 6th electric capacity, the XOUT pin of power management chip connect
Connect one end of crystal oscillator and one end of the 5th electric capacity, the other end of the 5th electric capacity and the other end ground connection of the 6th electric capacity.
8. the compatible control device of mobile terminal main-auxiliary screen according to claim 7, it is characterised in that the power management
Unit also includes the 5th resistance and the 7th electric capacity；
5th resistance one end connection power management chip AVDD28_RTC pin and feeder ear VRTC, the 5th resistance it is another
One end passes through the 7th capacity earth.
9. the compatible control device of mobile terminal main-auxiliary screen according to claim 7, it is characterised in that the interface module
Including LCM interfaces, the second inductance and the 6th resistance；
2nd pin, the 3rd pin, the 4th pin, the 28th pin, the 29th pin, the 30th pin, the 31st pin of the LCM interfaces sequentially respectively with central authorities
The AH11 pin of processor, W4 pin, AA5 pin, AE28 pin, AB30 pin, AB31 pin, the one-to-one connection of AE27 pin；The 5th of LCM interfaces
The VIO18 pin that pin passes through the second inductance connection power management chip, the 6th pin of LCM interfaces connects power supply pipe by the 6th resistance
The VIO28 pin of reason chip, the 32nd pin of LCM interfaces connects the H4 pin of power management chip；9th pin of LCM interfaces, the 10th pin,
12nd pin, the 13rd pin, the 15th pin, the 16th pin, the 18th pin, the 19th pin, the 21st pin, the 22nd pin sequentially respectively with the 3rd EMI filter
4th pin of device, the 3rd pin of the 3rd electromagnetic interface filter, the 4th pin of the first electromagnetic interface filter, the 3rd pin of the first electromagnetic interface filter, the 4th
4th pin of electromagnetic interface filter, the 3rd pin of the 4th electromagnetic interface filter, the 4th pin of the 5th electromagnetic interface filter, the 3rd of the 5th electromagnetic interface filter the
Pin, the 4th pin of the second electromagnetic interface filter, the one-to-one connection of the 3rd pin of the second electromagnetic interface filter；The 24th pin connection the of LCM interfaces
The other end of two resistance, the 25th pin of LCM interfaces connects the FB pin of backlight boost chip.
10. the compatible control device of mobile terminal main-auxiliary screen according to claim 9, it is characterised in that the centre
Reason device adopts four core pieces of model MT6737, model ET5120A of backlight boost chip, the model of power management chip
For MT6328V/A, model FH26-33S-0.3SHW of LCM interfaces.
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| CN201621183912.8U CN206163103U (en) | 2016-11-04 | 2016-11-04 | Compatible controlling means of mobile terminal major -minor screen |
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| CN201621183912.8U CN206163103U (en) | 2016-11-04 | 2016-11-04 | Compatible controlling means of mobile terminal major -minor screen |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107016967A (en) * | 2017-06-09 | 2017-08-04 | 河源中光电通讯技术有限公司 | Backlight drive circuit |
| CN107832028A (en) * | 2017-10-18 | 2018-03-23 | 上海龙旗科技股份有限公司 | Multi-screen display system and method |
| CN109582506A (en) * | 2018-12-25 | 2019-04-05 | 深圳开立生物医疗科技股份有限公司 | The restoration methods and device of touch screen failure, host equipment and touch-control system |
| CN110531946A (en) * | 2019-08-26 | 2019-12-03 | Oppo（重庆）智能科技有限公司 | Shuangping san control platform and intelligent terminal |
| WO2021051453A1 (en) * | 2019-09-18 | 2021-03-25 | Tcl华星光电技术有限公司 | Goa circuit drive system and display apparatus |
| CN113835503A (en) * | 2020-06-24 | 2021-12-24 | 北京小米移动软件有限公司 | Method and device for controlling display mode switching, electronic equipment and storage medium |
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2016
- 2016-11-04 CN CN201621183912.8U patent/CN206163103U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107016967A (en) * | 2017-06-09 | 2017-08-04 | 河源中光电通讯技术有限公司 | Backlight drive circuit |
| CN107832028A (en) * | 2017-10-18 | 2018-03-23 | 上海龙旗科技股份有限公司 | Multi-screen display system and method |
| CN109582506A (en) * | 2018-12-25 | 2019-04-05 | 深圳开立生物医疗科技股份有限公司 | The restoration methods and device of touch screen failure, host equipment and touch-control system |
| CN110531946A (en) * | 2019-08-26 | 2019-12-03 | Oppo（重庆）智能科技有限公司 | Shuangping san control platform and intelligent terminal |
| WO2021051453A1 (en) * | 2019-09-18 | 2021-03-25 | Tcl华星光电技术有限公司 | Goa circuit drive system and display apparatus |
| CN113835503A (en) * | 2020-06-24 | 2021-12-24 | 北京小米移动软件有限公司 | Method and device for controlling display mode switching, electronic equipment and storage medium |
| CN113835503B (en) * | 2020-06-24 | 2024-04-12 | 北京小米移动软件有限公司 | Method and device for controlling display mode switching, electronic equipment and storage medium |
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Effective date of registration: 20200803 Address after: 644000 West Section of Gangyuan Road, Yibin Port Economic and Technological Development Zone, Yibin City, Sichuan Province Patentee after: Sichuan Kubi Communication Equipment Co.,Ltd. Address before: Futian District Sha Tau Street Shenzhen city Guangdong province 518000 Tairan nine Road East Building 704 Tang commercial Patentee before: SHENZHEN MINGTAI TELECOMMUNICATION Co.,Ltd. |
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