CN112291882A - Ultra-thin mobile phone LED backlight driving control system - Google Patents

Ultra-thin mobile phone LED backlight driving control system Download PDF

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Publication number
CN112291882A
CN112291882A CN202011145860.6A CN202011145860A CN112291882A CN 112291882 A CN112291882 A CN 112291882A CN 202011145860 A CN202011145860 A CN 202011145860A CN 112291882 A CN112291882 A CN 112291882A
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module
power supply
mobile phone
control system
ultra
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CN202011145860.6A
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张海军
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Sichuan Southwest Liansheng Communication Technology Co ltd
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Sichuan Southwest Liansheng Communication Technology Co ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/12—Controlling the intensity of the light using optical feedback
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/22—Controlling the colour of the light using optical feedback
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/24—Controlling the colour of the light using electrical feedback from LEDs or from LED modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/34—Voltage stabilisation; Maintaining constant voltage
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/36—Circuits for reducing or suppressing harmonics, ripples or electromagnetic interferences [EMI]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/14—Controlling the light source in response to determined parameters by determining electrical parameters of the light source
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/19—Controlling the light source by remote control via wireless transmission
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The invention discloses an ultrathin mobile phone LED backlight driving control system which comprises a single-path power supply input circuit, a conversion output multi-path power supply module, an FPGA programmable module, a PWM (pulse width modulation) regulation and control module, a master control MCU (microprogrammed control unit), a backlight source driving module, a photosensitive module and an LED lamp bank, wherein the single-path power supply input circuit is connected with the LED backlight driving control system; the single-path power supply input circuit inputs a single-path power supply signal to the FPGA programmable module through the conversion output multi-path power supply module, and the FPGA programmable module inputs a multi-path output signal to the main control MCU through the PWM regulation module; the MCU controls the photosensitive module through the backlight source driving module, and the photosensitive module controls the LED lamp bank to emit light. The invention aims to provide the ultrathin mobile phone LED backlight driving control system which is high in intelligent degree, convenient to operate, multifunctional and high in reliability, and can adjust the brightness of a mobile phone LED backlight source.

Description

Ultra-thin mobile phone LED backlight driving control system
Technical Field
The invention relates to the technical field of LED backlight control systems, in particular to an LED backlight driving control system of an ultrathin mobile phone.
Background
Along with the development of smart phones, more and more mobile phones are developed to the aspect of lightness and thinness, the thickness of the phone body directly influences the handheld holding feeling of a user, and the lighter and thinner mobile phones are lighter and lighter to carry. The ultrathin mobile phone is particularly a mobile phone taking an ultrathin phone body as a selling point.
The ultrathin mobile phone is particularly a mobile phone taking an ultrathin phone body as a selling point. The existing mobile phones are basically consistent in hardware and software, are different in appearance and workmanship, and have huge user groups. From 2011, smart phones are developing to be ultra-thin, and manufacturers strive to make their products thinner and lighter for portability. The ultrathin mobile phone has the advantages that compared with the common mobile phone, the ultrathin mobile phone is convenient to carry due to the fact that the mobile phone body is smaller and lighter, and can also be used as an ornament to be carried about.
The backlight source is a light source arranged at the back of the display, and the display does not have the function of light emission, so that the light emission effect of the display directly influences the display effect of a display screen, and the backlight source is an important matching part of the display; however, the existing ultra-thin mobile phone backlight control circuit has a single function and poor control light-emitting effect, so that the ultra-thin mobile phone backlight display effect cannot satisfy consumers, and therefore, the ultra-thin mobile phone backlight control system is to be further improved.
The Chinese patent application numbers are: 201520470471.9, application date is 30/06/2015, publication date is: on day 09 of 12 months 2015, the patent names: the invention discloses an intelligent backlight regulation control system which comprises a controller, an input selection unit, a CAN bus transceiver, an LIN bus transceiver, a PWM signal unit and a power supply unit, wherein the input selection unit, the CAN bus transceiver, the LIN bus transceiver and the PWM signal unit are respectively connected with the controller, and the power supply unit respectively supplies power to the CAN bus transceiver, the LIN bus transceiver and the controller. The input selection unit is connected with the luminosity sensor, the data of the luminance sensor collected by the input selection unit is sent to the controller, and the controller judges according to the sent data and sends the data to the electric appliance module in the vehicle through the CAN bus transceiver. The intelligent change of the backlight brightness in the vehicle under different environmental conditions in the day and at night is solved.
The above patent document discloses an intelligent backlight adjustment control system, but the patent technology is not suitable for an ultra-thin mobile phone backlight control system, and the backlight control system has poor effect of controlling backlight brightness, and the function still appears to be single, which cannot meet the market demand.
Disclosure of Invention
In view of this, the invention provides an ultra-thin mobile phone LED backlight driving control system which has a high degree of intelligence, can adjust the brightness of a mobile phone LED backlight source, is convenient to operate, has various functions, and has high reliability.
In order to realize the purpose of the invention, the following technical scheme can be adopted:
an LED backlight driving control system of an ultrathin mobile phone comprises a single-path power supply input circuit, a conversion output multi-path power supply module, an FPGA programmable module, a PWM regulation module, a master control MCU, a backlight source driving module, a photosensitive module and an LED lamp set; the single-circuit power supply input circuit is used for inputting a circuit power supply; the conversion output multi-path power supply module is used for converting a single-path input power supply into a multi-path power supply to be output; the FPGA programmable module is used for performing voltage stabilization protection on a plurality of paths of power output signals, the PWM regulation and control module is used for regulating and controlling the plurality of paths of power output signals, and the main control MCU is used for controlling and analyzing signal information; the backlight source driving module is used for driving a backlight source; the photosensitive module is used for controlling processing sensitivity; the LED lamp group is used for emitting light;
the single-path power supply input circuit inputs a single-path power supply signal to the FPGA programmable module through the conversion output multi-path power supply module, and the FPGA programmable module inputs a multi-path output signal to the main control MCU through the PWM regulation module; the MCU controls the photosensitive module through the backlight source driving module, and the photosensitive module controls the LED lamp bank to emit light.
The master control MCU is an LT3599 chip.
The conversion output multi-path power supply module comprises a filtering voltage stabilizing module which is used for filtering and stabilizing the multi-path output power supply signals.
The PWM regulation module comprises a DC/DC conversion module, and the DC/DC conversion module is used for stabilizing voltage and protecting the multipath output power supply signals.
The photosensitive module comprises a brightness adjusting module which is used for adjusting the brightness of the LED lamp bank.
The photosensitive module comprises a voltage detection module, and the voltage detection module is used for detecting the voltage of the photosensitive module.
The photosensitive module comprises a definition control module, and the definition control module is used for controlling the luminous definition of the LED lamp bank.
The definition control module comprises a brightness color adjusting module, and the brightness color adjusting module is used for adjusting the light emitting color of the LED lamp bank.
The main control MCU comprises a wireless communication module which is used for transmitting circuit information in a wireless communication way.
The technical scheme provided by the invention has the beneficial effects that 1) the invention processes and analyzes circuit information by outputting a plurality of power supply modules and a main control MCU, can intelligently adjust the luminous brightness and definition of the LED lamp bank, and controls the backlight system more conveniently; 2) the LED lamp bank has various functions, ensures the stability and the reliability of the backlight system for controlling the LED lamp bank to emit light, and greatly prolongs the service life of the backlight system; 3) the invention has wide application places and is convenient for general popularization, and is an upgrading improvement in the prior art.
Drawings
Fig. 1 is a block diagram of an LED backlight driving control system of an ultra-thin mobile phone according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and embodiments thereof.
Example 1
Referring to fig. 1, the ultra-thin mobile phone LED backlight driving control system includes a single-channel power input circuit 1, a conversion output multi-channel power module 2, an FPGA programmable module 3, a PWM control module 4, a main control MCU5, a backlight driving module 6, a light sensing module 7, and an LED lamp set 8; the single-circuit power supply input circuit 1 is used for inputting a circuit power supply; the conversion output multi-path power supply module 2 is used for converting a single-path input power supply into a multi-path power supply output; the FPGA programmable module 3 is used for performing voltage stabilization protection on a plurality of paths of power output signals, the PWM regulation and control module 4 is used for regulating and controlling the plurality of paths of power output signals, and the main control MCU5 is used for controlling and analyzing signal information; the backlight source driving module 6 is used for driving a backlight source; the photosensitive module 7 is used for controlling processing sensitivity; the LED lamp group 8 is used for emitting light;
the single-circuit power input circuit 1 inputs a single-circuit power signal to the FPGA programmable module 3 through the conversion output multi-circuit power module 2, and the FPGA programmable module 3 inputs a multi-circuit output signal to the main control MCU5 through the PWM regulation module 4; the MCU5 controls the photosensitive module 7 through the backlight driving module 6, and the photosensitive module 7 controls the LED lamp group 8 to emit light.
Preferably, the master control MCU5 is a LT3599 chip.
In this embodiment, the single-channel power input circuit 1 inputs only one 28VDC power, and after internal rectification, filtering, voltage conversion and voltage stabilization processing by the multi-channel power module 2, the input is converted and output to the FPGA programmable module 3, the FPGA programmable module 3 inputs multi-channel output signals to the main control MCU5 through the PWM control module 4, and provides +5VDC power, 3.3V power and +24VDC power to the main control MCU5, so as to realize brightness and contrast adjustment and provide stable and uniform backlight for the ultra-thin mobile phone.
The main control MCU5 controls the light emitting of the LED lamp set 8 by controlling the light sensing module 7 to input multiple voltage paths to the LED lamp set 8.
In this embodiment, the converting-outputting multi-path power module 2 includes a filtering and voltage-stabilizing module 21, and the filtering and voltage-stabilizing module 21 is configured to filter and stabilize a multi-path output power signal.
The filtering and voltage-stabilizing module 21 is used for filtering and stabilizing the multi-path output power supply signals, so that the stability of the multi-path output power supply signals is further ensured, and the master control MCU5 is ensured for controlling the LED lamp group 8 to emit light stably.
In this embodiment, the PWM control module 4 includes a DC/DC conversion module 41, and the DC/DC conversion module 41 is configured to stabilize and protect the multiple output power signals.
In this embodiment, the main control MCU5 changes the value of the LED current output from the main control MCU5 through PWM pulse width modulation, so as to change the brightness of the LED and realize the adjustment of the brightness and contrast of the ultra-thin mobile phone backlight.
Example 2
Referring to fig. 1, the difference from the above embodiment is that the photosensitive module 7 includes a brightness adjusting module 71, and the brightness adjusting module 71 is used for adjusting the brightness of the LED lamp group 8.
In this embodiment, the main control MCU5 controls the brightness adjusting module 71 by controlling the photosensitive module 7, so that the means for adjusting the brightness of the LED light set 8 are more diversified.
In this embodiment, the photosensitive module 7 includes a voltage detection module 72, and the voltage detection module 72 is configured to detect a voltage of the photosensitive module 7.
The voltage detection module 72 guarantees the voltage stability of the photosensitive module, so that the light emitting stability of the backlight source of the ultrathin mobile phone is guaranteed.
In this embodiment, the photosensitive module 7 includes a definition control module 73, and the definition control module 73 is configured to control the light emitting definition of the LED lamp set 8.
In this embodiment, the main control MCU5 controls the definition control module 73 by controlling the photosensitive module 7, so as to adjust the lighting of the LED light group 8 more clearly; the backlight source of the ultrathin mobile phone is ensured to emit light more clearly and stably.
Further, preferably, the definition control module 73 includes a brightness color adjusting module 731, and the brightness color adjusting module 731 is used for adjusting the lighting color of the LED lamp set 8.
In order to make the light emitting color of the backlight source of the ultra-thin mobile phone richer, the light emitting color can be continuously adjusted by the light color adjusting module 731, so that the ultra-thin mobile phone emits light more gorgeous and colorful.
In this embodiment, the main control MCU5 includes a wireless communication module 9, and the wireless communication module 9 is configured to transmit circuit information in a wireless communication manner.
The wireless communication module 9 may include a WIFI wireless transmission module, may also include a bluetooth transmission module, and may also include transmission modules such as a 4G wireless communication network.
The master control MCU5 comprises a wireless communication module 9 which can send control analysis to a remote service system, the ultra-thin mobile phone backlight control system is monitored by the remote service system, and the ultra-thin mobile phone backlight can be controlled to emit light at the remote end, so that the method for controlling the ultra-thin mobile phone backlight to emit light is diversified, and the ultra-thin mobile phone backlight control system is more convenient and faster and meets the requirements of modern social development.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (9)

1. The utility model provides an ultra-thin cell-phone LED drive control system that is shaded which characterized in that: the LED backlight module comprises a single-path power input circuit, a conversion output multi-path power module, an FPGA programmable module, a PWM regulation and control module, a main control MCU, a backlight source driving module, a photosensitive module and an LED lamp set; the single-circuit power supply input circuit is used for inputting a circuit power supply; the conversion output multi-path power supply module is used for converting a single-path input power supply into a multi-path power supply to be output; the FPGA programmable module is used for performing voltage stabilization protection on a plurality of paths of power output signals, the PWM regulation and control module is used for regulating and controlling the plurality of paths of power output signals, and the main control MCU is used for controlling and analyzing signal information; the backlight source driving module is used for driving a backlight source; the photosensitive module is used for controlling processing sensitivity; the LED lamp group is used for emitting light;
the single-path power supply input circuit inputs a single-path power supply signal to the FPGA programmable module through the conversion output multi-path power supply module, and the FPGA programmable module inputs a multi-path output signal to the main control MCU through the PWM regulation module; the MCU controls the photosensitive module through the backlight source driving module, and the photosensitive module controls the LED lamp bank to emit light.
2. The ultra-thin mobile phone LED backlight driving control system of claim 1, characterized in that: the master control MCU is an LT3599 chip.
3. The ultra-thin mobile phone LED backlight driving control system according to claim 1 or 2, characterized in that: the conversion output multi-path power supply module comprises a filtering voltage stabilizing module which is used for filtering and stabilizing the multi-path output power supply signals.
4. The ultra-thin mobile phone LED backlight driving control system of claim 3, characterized in that: the PWM regulation module comprises a DC/DC conversion module, and the DC/DC conversion module is used for stabilizing voltage and protecting the multipath output power supply signals.
5. The ultra-thin mobile phone LED backlight driving control system according to claim 1 or 2, characterized in that: the photosensitive module comprises a brightness adjusting module which is used for adjusting the brightness of the LED lamp bank.
6. The ultra-thin mobile phone LED backlight driving control system of claim 5, characterized in that: the photosensitive module comprises a voltage detection module, and the voltage detection module is used for detecting the voltage of the photosensitive module.
7. The ultra-thin mobile phone LED backlight driving control system of claim 6, characterized in that: the photosensitive module comprises a definition control module, and the definition control module is used for controlling the luminous definition of the LED lamp bank.
8. The ultra-thin mobile phone LED backlight driving control system of claim 7, characterized in that: the definition control module comprises a brightness color adjusting module, and the brightness color adjusting module is used for adjusting the light emitting color of the LED lamp bank.
9. The ultra-thin mobile phone LED backlight driving control system of claim 1, characterized in that: the main control MCU comprises a wireless communication module which is used for transmitting circuit information in a wireless communication way.
CN202011145860.6A 2020-10-23 2020-10-23 Ultra-thin mobile phone LED backlight driving control system Pending CN112291882A (en)

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