CN108091311A - Control method, display module, terminal and the storage medium of display module - Google Patents

Control method, display module, terminal and the storage medium of display module Download PDF

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Publication number
CN108091311A
CN108091311A CN201711497837.1A CN201711497837A CN108091311A CN 108091311 A CN108091311 A CN 108091311A CN 201711497837 A CN201711497837 A CN 201711497837A CN 108091311 A CN108091311 A CN 108091311A
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CN
China
Prior art keywords
temperature
backlight
driving
display module
tft
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CN201711497837.1A
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Chinese (zh)
Inventor
张峰
刘双喜
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武汉华显光电技术有限公司
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Priority to CN201711497837.1A priority Critical patent/CN108091311A/en
Publication of CN108091311A publication Critical patent/CN108091311A/en

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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 using liquid crystals
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/3406Control of illumination source

Abstract

The present invention proposes a kind of control method of display module, if it is provided with dry temperature sensor in the LCD terminal area of display module, obtain the temperature value set of predeterminated position in the LCD terminal area of display module, the temperature of driving IC of display module and the temperature level of backlight are compared according to the temperature value set, when the temperature of IC is driven to be more than the temperature of backlight, determine the fever of display module mainly by IC is driven to cause, and when the temperature of IC is driven to be more than driving IC temperature pre-warning values, the refreshing frequency of driving IC is reduced;It when the temperature of backlight is more than the temperature of driving IC, determines that the fever of display module is mainly caused by backlight, and when the temperature of backlight is more than backlight temperature pre-warning value, reduces the power of backlight.The present invention also proposes a kind of display module, terminal and storage medium using the display module.Present invention reduces the power consumptions of display module, also correspondingly improve thermal diffusivity of the display module at driving IC and backlight.

Description

Control method, display module, terminal and the storage medium of display module

Technical field

The present invention relates to technical field of liquid crystal display more particularly to a kind of control method of display module, display module, ends End and storage medium.

Background technology

At present, power consumption is generated when electric current passes through impedance when the main reason for display screen is hot is circuit work.Display screen is sent out Boiling hot position is mainly at driving IC (Integrated Circuit, driving chip) and BLU (Back Light Unit, backlight Source component) LED (Light Emitting Diode, light emitting diode) lamp string at.

Driving the main power consumption at IC, (liquid crystal drives with VSN for IOVCC (digital circuit power source), VSP (liquid crystal drive power supply) Dynamic power supply) power consumption, the power consumption at BLU places is mainly power consumption maximum, the heat of the current power dissipation of LED light, wherein IOVCC and LED At most.Moreover, after backlight display module is completed, driving IC and LED is at adjacent vertical plane, thus heat is superimposed Together, hot sense is more obvious.

The content of the invention

It is a primary object of the present invention to provide a kind of control method of display module, it is intended to reduce the work(of display module It consumes, improve its thermal diffusivity.

To achieve the above object, the present invention proposes a kind of control method of display module, the LCD terminal area of the display module If being inside provided with dry temperature sensor, the control method of the display module comprises the following steps:

If obtaining the temperature value of the predeterminated position of dry temperature sensor acquisition in the LCD terminal area of display module, one is formed Temperature value set;

Compare the temperature T of the driving IC of display module according to the temperature value setICWith the temperature T of backlightBLIt is big It is small;

Work as TIC> TBLAnd when the temperature of IC being driven to be more than driving IC temperature pre-warning values, the refreshing frequency of driving IC is reduced;

Work as TBL> TICAnd the temperature of backlight reduces the power of backlight when being more than backlight temperature pre-warning value.

Further, if the dry temperature sensor includes the first TFT sensors, the 2nd TFT sensors and the 3rd TFT and passes Sensor;

The first TFT sensors are arranged at the left side in the LCD terminal area, and the 2nd TFT sensors are arranged at institute The intermediate lower section in LCD terminal area is stated, the 3rd TFT sensors are arranged at the right side in the LCD terminal area;

The first TFT sensors, the 2nd TFT sensors and the 3rd TFT sensors are connected into the input of the driving IC PIN。

Further, if the predeterminated position that dry temperature sensor gathers in the LCD terminal area for obtaining display module The step of temperature value, one temperature value set of formation, including:

Obtain the temperature value T on the left of the LCD terminal area of the first TFT sensors acquisition1, the 2nd TFT sensors acquisition LCD The temperature value T of lower section among terminal region2And the 3rd TFT sensors acquisition LCD terminal area on the right side of temperature value T3, by temperature value T1, temperature value T2With temperature value T3Form the temperature value set.

Further, T1=m1TBL+n1TIC, T2=m2TBL+n2TIC, T3=m3TBL+n3TIC;Wherein, m1+n1=1, m2+n2 =1, m3+n3=1.

Further, the temperature T of the driving IC that display module is compared according to the temperature value setICWith backlight Temperature TBLSize the step of, including:

Compare the temperature value T at the 2nd TFT sensors2With the temperature value T at the first TFT sensors1, the 3rd TFT sensors The temperature value T at place3The sum of between difference;

Work as T2> T1+T3When, judge to drive the temperature T of ICICMore than the temperature T of backlightBL

Work as T2< T1+T3When, judge the temperature T of backlightBLMore than the temperature T of driving ICIC

Further, it is described to work as TIC> TBLAnd when the temperature of IC being driven to be more than driving IC temperature pre-warning values, reduce driving The step of refreshing frequency of IC, including:

Work as TIC> TBLWhen, it is calculated and driven according to the current value of three TFT sensor feedbacks and TFT temperature current characteristic curve The temperature of dynamic IC;

When the temperature for driving IC is more than driving IC temperature pre-warning values, the first signal is fed back to driving IC, with according to First signal reduces the refreshing frequency of driving IC.

Further, it is described to work as TBL> TICAnd the temperature of backlight be more than backlight temperature pre-warning value when, reduce backlight The step of power in source, including:

Work as TBL> TICWhen, according to the current value and the TFT temperature current characteristic curve calculating back of the body of three TFT sensor feedbacks The temperature of light source;

When the temperature of backlight is more than backlight temperature pre-warning value, to driving IC feedback secondary signals, with according to Secondary signal turns the pulse width modulated duty cycle of backlight down or control backlight enters default CABC patterns.

Present invention further propose that a kind of display module, if the display module includes dry temperature sensor, memory, place It manages device and is stored in the control program that the memory can simultaneously be run on the processor, the control program is by the processing The step of device realizes the control method of display module as described above when performing.

The present invention also proposes a kind of terminal, which includes display module as described above.

The present invention also proposes a kind of storage medium, the storage medium storing control program, and the control program is processed The step of device realizes the control method of display module as described above when performing.

The control method of the display module of the present invention, several temperature sensing in the LCD terminal area by obtaining display module The temperature value of the predeterminated position of device acquisition, forms a temperature value set, and the drive of display module is compared according to the temperature value set The temperature of dynamic IC and the temperature level of backlight when the temperature of IC is driven to be more than the temperature of backlight, determine display module Fever reduces the refreshing of driving IC mainly by IC is driven to cause, and when the temperature of IC is driven to be more than driving IC temperature pre-warning values Frequency;When the temperature of backlight is more than the temperature of driving IC, determine that the fever of display module is mainly caused by backlight, and When the temperature of backlight is more than backlight temperature pre-warning value, the power of backlight is reduced.The control method is by reducing backlight Power or reduce driving IC refreshing frequency, reduce the power consumption of display module, also correspondingly improve display module and driving Move the thermal diffusivity at IC and backlight.

Description of the drawings

It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with Structure according to these attached drawings obtains other attached drawings.

Fig. 1 is the hardware architecture diagram of one embodiment of terminal of the present invention;

Fig. 2 is the flow diagram of one embodiment of control method of the display module of the present invention;

Fig. 3 is the flow diagram of mono- embodiments of step S20 in Fig. 2;

Fig. 4 is TFT temperature current characteristic curve schematic diagram;

Fig. 5 is the flow diagram of mono- embodiments of step S30 in Fig. 2;

Fig. 6 is the flow diagram of mono- embodiments of step S40 in Fig. 2.

Drawing reference numeral explanation:

Label Title Label Title 100 Terminal 101 Radio frequency unit 102 WiFi module 103 Audio output unit 104 A/V input units 1041 Graphics processor 1042 Microphone 105 Sensor 106 Display module 1061 Display interface 107 User input unit 1071 Operation and control interface 1072 Other input equipments 108 Interface unit 109 Memory 110 Processor 111 Power supply

The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.

Specific embodiment

It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.

In subsequent description, using for representing that the suffix of such as " module ", " component " or " unit " of element is only Be conducive to the explanation of the present invention, itself there is no a specific meaning.Therefore, " module ", " component " or " unit " can mix Ground uses.

Terminal can be implemented in a variety of manners.For example, terminal described in the present invention can include such as mobile phone, tablet Computer, laptop, palm PC, personal digital assistant (Personal Digital Assistant, PDA), portable The shiftings such as media player (Portable Media Player, PMP), guider, wearable device, Intelligent bracelet, pedometer The dynamic fixed terminals such as terminal and number TV, desktop computer.

It will be illustrated in subsequent descriptions by taking terminal as an example, it will be appreciated by those skilled in the art that except being used in particular for Outside the element of mobile purpose, construction according to the embodiment of the present invention can also apply to the terminal of fixed type.

Referring to Fig. 1, a kind of hardware architecture diagram of its terminal of each embodiment to realize the present invention, the terminal 100 can include:RF (Radio Frequency, radio frequency) unit 101, WiFi module 102, audio output unit 103, A/V (audio/video) input unit 104, sensor 105, display module 106, user input unit 107, interface unit 108, storage The components such as device 109, processor 110 and power supply 111.It will be understood by those skilled in the art that the terminal structure shown in Fig. 1 The not restriction of structure paired terminal, terminal can include than illustrate more or fewer components either combine some components or Different component arrangements.

The all parts of terminal are specifically introduced with reference to Fig. 1:

Radio frequency unit 101 can be used for receiving and sending messages or communication process in, signal sends and receivees, specifically, by base station Downlink information receive after, handled to processor 110;In addition, by the data sending of uplink to base station.In general, radio frequency unit 101 Including but not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier, duplexer etc..In addition, it penetrates Frequency unit 101 can also be communicated by wireless communication with network and other equipment.Above-mentioned wireless communication can use any communication Standard or agreement include but not limited to GSM (Global System of Mobile communication, global system for mobile telecommunications System), GPRS (General Packet Radio Service, general packet radio service), CDMA2000 (Code Division Multiple Access2000, CDMA 2000), WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, TD SDMA), FDD-LTE (Frequency Division Duplexing-Long Term Evolution, frequency division duplex Long Term Evolution) and TDD-LTE (Time Division Duplexing-Long Term Evolution, time division duplex Long Term Evolution) etc..

WiFi belongs to short range wireless transmission technology, and terminal can help user's transceiver electronics postal by WiFi module 102 Part, browsing webpage and access streaming video etc., it has provided wireless broadband internet to the user and has accessed.Although Fig. 1 is shown WiFi module 102, but it is understood that, and must be configured into for terminal is not belonging to, it can not change as needed completely Become in the scope of the essence of invention and omit.Such as in the present embodiment, terminal 100 can be based on WiFi module 102 and unmanned plane Establish communication connection.

Audio output unit 103 can be in call signal reception pattern, call mode, logging mode, language in terminal 100 Sound recognition mode, broadcast reception mode are receiving or depositing by radio frequency unit 101 or WiFi module 102 when under isotypes The voice data stored in reservoir 109 is converted into audio signal and exports as sound.Moreover, audio output unit 103 may be used also To provide the relevant audio output of specific function performed with terminal 100 (for example, call signal receives sound, message sink sound Sound etc.).Audio output unit 103 can include loud speaker, buzzer etc..In the present embodiment, nobody is selected in output During the prompting of machine flight control mode, which can be voice prompt, vibration prompting based on buzzer etc..

A/V input units 104 are used to receive audio or video signal.A/V input units 104 can include graphics processor (Graphics Processing Unit, GPU) 1041 and microphone 1042, graphics processor 1041 is in video acquisition mode Or the static images or the image data of video obtained in image capture mode by image capture apparatus (such as camera) carry out Reason.Treated, and picture frame may be displayed in display module 106.Through graphics processor 1041, treated that picture frame can be deposited Storage is sent in memory 109 (or other storage mediums) or via radio frequency unit 101 or WiFi module 102.Mike Wind 1042 can connect in telephone calling model, logging mode, speech recognition mode etc. operational mode via microphone 1042 Quiet down sound (voice data), and can be voice data by such acoustic processing.Audio that treated (voice) data can To be converted to the form output that mobile communication base station can be sent to via radio frequency unit 101 in the case of telephone calling model. Microphone 1042 can implement various types of noises elimination (or inhibition) algorithms and send and receive sound to eliminate (or inhibition) The noise generated during frequency signal or interference.

Terminal 100 further includes at least one sensor 105, such as optical sensor, motion sensor and other sensors. Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein, ambient light sensor can be according to ambient light Light and shade adjusts the brightness of display interface 1061, and proximity sensor can close display interface when terminal 100 is moved in one's ear 1061 and/or backlight.As one kind of motion sensor, accelerometer sensor can detect in all directions (generally three axis) and add The size of speed can detect that size and the direction of gravity when static, application (such as the horizontal/vertical screen available for identification mobile phone posture Switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap) etc.;As for mobile phone also Configurable fingerprint sensor, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, hygrometer, temperature The other sensors such as meter, infrared ray sensor, details are not described herein.

Display module 106 is used to show by information input by user or be supplied to the information of user.Display module 106 can wrap Display interface 1061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode may be employed Forms such as (Organic Light-Emitting Diode, OLED) configure display interface 1061.

User input unit 107 can be used for the number for receiving input or character information and generate to set with the user of terminal It puts and the input of key signals that function control is related.Specifically, user input unit 107 may include operation and control interface 1071 and its His input equipment 1072.Operation and control interface 1071, also referred to as touch-screen collect user on it or neighbouring touch operation (are compared Such as user is using finger, any suitable object of stylus or attachment on operation and control interface 1071 or near operation and control interface 1071 Operation), and corresponding attachment device is driven according to preset formula.Operation and control interface 1071 may include touch detecting apparatus With two parts of touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect what touch operation was brought Signal transmits a signal to touch controller;Touch controller receives touch information from touch detecting apparatus, and it is converted Into contact coordinate, then processor 110 is given, and the order that processor 110 is sent can be received and performed.Furthermore, it is possible to it adopts Operation and control interface 1071 is realized with polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except operation and control interface 1071, user input unit 107 can also include other input equipments 1072.Specifically, other input equipments 1072 can wrap It includes but is not limited to physical keyboard, in function key (such as volume control button, switch key etc.), trace ball, mouse, operation lever etc. One or more, do not limit herein specifically.

Further, operation and control interface 1071 can cover display interface 1061, when operation and control interface 1071 detect on it or After neighbouring touch operation, processor 110 is sent to determine the type of touch event, is followed by subsequent processing device 110 according to touch thing The type of part provides corresponding visual output on display interface 1061.Although in Fig. 1, operation and control interface 1071 and display interface 1061 be the component independent as two to realize the function that outputs and inputs of terminal, but in some embodiments it is possible to will Operation and control interface 1071 is integrated with display interface 1061 and realizes the function that outputs and inputs of terminal, does not limit herein specifically.

Interface unit 108 be used as at least one external device (ED) be connected with terminal 100 can by interface.It is for example, external Device can include wired or wireless head-band earphone port, external power supply (or battery charger) port, wired or wireless number According to port, memory card port, for connecting the port of device with identification module, audio input/output (I/O) port, regard Frequency I/O ports, ear port etc..Interface unit 108 can be used for receiving the input from external device (ED) (for example, data are believed Breath, electric power etc.) and one or more elements that the input received is transferred in terminal 100 or can be used at end Data are transmitted between end 100 and external device (ED).

Memory 109 can be used for storage software program and various data.Memory 109 can mainly include storing program area And storage data field, wherein, storing program area can storage program area, the application program needed at least one function it is (such as aobvious Show control function of module etc.) etc.;Storage data field can be stored uses created data (such as TFT (Thin according to mobile phone Film Transistor, thin film transistor (TFT)) temperature current characteristic curve etc.) etc..In addition, memory 109 can include at a high speed with Machine access memory, can also include nonvolatile memory, a for example, at least disk memory, flush memory device or its His volatile solid-state part.

Processor 110 is the control centre of terminal, using various interfaces and the various pieces of the entire terminal of connection, is led to It crosses operation or performs the software program being stored in memory 109 and/or module and call and be stored in memory 109 Data perform the various functions of terminal and processing data, so as to carry out integral monitoring to terminal.Processor 110 may include one Or multiple processing units;Preferably, processor 110 can integrate application processor and modem processor, wherein, using processing The main processing operation system of device, user interface and application program etc., modem processor mainly handles wireless communication.It can manage Solution, above-mentioned modem processor can not also be integrated into processor 110.

Terminal 100 can also be included to the power supply 111 (such as battery) of all parts power supply, it is preferred that power supply 111 can be with It is logically contiguous by power-supply management system and processor 110, so as to by power-supply management system realize management charge, electric discharge, with And the functions such as power managed.

Although Fig. 1 is not shown, display module 106 can also include display screen, driving circuit and backlight (Back Light).The assembly of display screen and driving circuit is known as Open Cell.Display screen is the two panels glass up and down by having filled liquid crystal The box of glass composition is responsible for the various pictures of display.Driving circuit is connected with display screen, including flexible printed circuit board (Flexible Printed Circuit, FPC), driving IC and printed circuit board (PCB) (Printed Circuit Board, PCB), Continue substrate, and effect is switched on the information that backward display screen provides various display pictures.Backlight is by light emitting source, optical film The structure of the compositions such as piece, glue frame, effect are to provide special light source to TFT-LCD.

As the most crucial part in TFT-LCD, display screen includes polarizer, color film (Color successively from top to bottom Filter, CF) substrate, liquid crystal, TFT substrate, polarizer.The effect of polarizer is that the light of backlight is controlled only to allow specific direction Light is by filtering out the light in other directions.It, can by the twisting action of liquid crystal molecule through polarizer treated light The light luminance of display screen is projected with control, so as to control the bright dark degree of LCD pictures.Control liquid crystal torsion is to be added in liquid crystal On pixel voltage, integrate TFT switch array in TFT substrate, the function of TFT switch is opening for a connection data cable and pixel It closes, the time of on and off, TFT was a three-terminal switch pipe by scanning line traffic control, and one end is grid, and corresponding scan line, one end is Drain electrode, respective data lines, one end are source electrodes, respective pixel electrode.Under grid control, the data cable of drain electrode is by TFT to source The pixel of pole implements charge and discharge.The function of grid is to control the conductivity degree of TFT.

The display module of the present embodiment further includes the TFT sensors being arranged in LCD terminal area, and LCD terminal area is located at TFT Between (Thin Film Transistor, thin film transistor (TFT)) layer and CF (colored filter) layer, LCD terminal is the lead of LCD Extension, that is, LCD stretch the part for needing to connect driving circuit or driving IC, the electrically conducting transparent generally on glass On film.

Based on the hardware configuration of above-mentioned terminal, the terminal of the embodiment of the present invention, by the LCD terminal area for obtaining display module The temperature value set of interior predeterminated position compares the temperature and backlight of the driving IC of display module according to the temperature value set Temperature level when the temperature of IC is driven to be more than the temperature of backlight, determines the fever of display module mainly by IC is driven to cause, And when the temperature at IC is driven to be more than driving IC temperature pre-warning values, the refreshing frequency of driving IC is reduced;When the temperature of backlight During more than the temperature for driving IC, determine that the fever of display module is mainly caused by backlight, and the temperature at backlight is more than During backlight temperature pre-warning value, the power of backlight is reduced.The terminal by controlling display module, reduce backlight power or The refreshing frequency of driving IC is reduced, reduces the power consumption of display module, also correspondingly improves display module in driving IC and the back of the body Thermal diffusivity at light source thereby reduces the power consumption of terminal, improves thermal diffusivity.

As shown in Figure 1, including operating system and journey can be controlled as in a kind of memory 109 of computer storage media Sequence.

If being provided with dry temperature sensor in the LCD terminal area of display module, processor 110 can be used for calling memory The control method of the display module stored in 109, and perform following operation:

If obtaining the temperature value of the predeterminated position of dry temperature sensor acquisition in the LCD terminal area of display module, one is formed Temperature value set;

Compare the temperature T of the driving IC of display module according to the temperature value setICWith the temperature T of backlightBLIt is big It is small;

Work as TIC> TBLAnd when driving the temperature at IC more than driving IC temperature pre-warning values, reduce the refreshing of driving IC frequently Rate;

Work as TBL> TICAnd the temperature at backlight reduces the power of backlight when being more than backlight temperature pre-warning value.

Further, if the dry temperature sensor includes the first TFT sensors, the 2nd TFT sensors and the 3rd TFT and passes Sensor;

The first TFT sensors are arranged at the left side in the LCD terminal area, and the 2nd TFT sensors are arranged at institute The intermediate lower section in LCD terminal area is stated, the 3rd TFT sensors are arranged at the right side in the LCD terminal area;

The first TFT sensors, the 2nd TFT sensors and the 3rd TFT sensors are connected into the input of the driving IC PIN。

Further, processor 110 can be also used for calling the control method of the display module stored in memory 109, And perform following operation:

Obtain the temperature value T on the left of the LCD terminal area of the first TFT sensors acquisition1, the 2nd TFT sensors acquisition LCD The temperature value T of lower section among terminal region2And the 3rd TFT sensors acquisition LCD terminal area on the right side of temperature value T3, by temperature value T1, temperature value T2With temperature value T3Form the temperature value set.

Further, T1=m1TBL+n1TIC, T2=m2TBL+n2TIC, T3=m3TBL+n3TIC;Wherein, m1+n1=1, m2+n2 =1, m3+n3=1.

Further, processor 110 can be also used for calling the control method of the display module stored in memory 109, And perform following operation:

Compare the temperature value T at the 2nd TFT sensors2With the temperature value T at the first TFT sensors1, the 3rd TFT sensors The temperature value T at place3The sum of between difference;

Work as T2> T1+T3When, judge to drive the temperature T of ICICMore than the temperature T of backlightBL

Work as T2< T1+T3When, judge the temperature T of backlightBLMore than the temperature T of driving ICIC

Further, further, processor 110 can be also used for the display module stored in calling memory 109 Control method, and perform following operation:

Work as TIC> TBLWhen, it is calculated and driven according to the current value of three TFT sensor feedbacks and TFT temperature current characteristic curve Temperature at dynamic IC;

When the temperature at IC is driven to be more than driving IC temperature pre-warning values, the first signal is fed back to driving IC, with according to institute Stating the first signal reduces the refreshing frequency of driving IC.

Further, further, processor 110 can be also used for the display module stored in calling memory 109 Control method, and perform following operation:

Work as TBL> TICWhen, according to the current value and the TFT temperature current characteristic curve calculating back of the body of three TFT sensor feedbacks Temperature at light source;

When temperature at backlight is more than backlight temperature pre-warning value, to driving IC feedback secondary signals, with according to institute Secondary signal is stated to turn the pulse width modulated duty cycle of backlight down or backlight is controlled to enter default CABC patterns.

Present invention further propose that a kind of control method of display module.

With reference to Fig. 2, Fig. 2 is the flow diagram of one embodiment of control method of the display module of the present invention.

LCD (Liquid Crystal Display, liquid crystal display) terminal in the application is the lead extension of LCD Point, that is, LCD stretches and needs to connect circuit or drive the part of IC, in the transparent conductive film generally on glass.

In the present embodiment, if being provided with dry temperature sensor in the LCD terminal area of the display module, the display mould The control method of group comprises the following steps:

S10:If obtain the temperature value of the predeterminated position of dry temperature sensor acquisition in the LCD terminal area of display module, shape Into a temperature value set;

In the present embodiment, due in display module main sites of heat generation for driving IC place and backlight at, and showing Show that module group assembling is in LED backlight at adjacent vertical plane into driving IC after TPM, and LCD terminal area is located at TFT (Thin Film Transistor, thin film transistor (TFT)) between layer and CF (colored filter) layer, thus by being arranged in LCD terminal area If the dry temperature sensor obtain the temperature values of multiple predeterminated positions in LCD terminal area just can to display module in it is main The sites of heat generation wanted is judged, and then prevents the terminal using the display module by corresponding reducing power consumption or cooling measure It is hot, improve user experience.Predeterminated position in the LCD terminal area can accordingly be set according to the size in LCD terminal area It puts, the rule of setting is the temperature value at least gathered at one at backlight at the temperature value driven at IC, at least two.

S20:Compare the temperature T of the driving IC of display module according to the temperature value setICWith the temperature T of backlightBL's Size;

After the temperature value set of predeterminated position in LCD terminal area is obtained, according to not equality of temperature in the temperature value set It is the temperature drift of driving IC or the temperature drift of backlight that difference between angle value, which can be arranged and calculated, due to the display of LCD The caloric value of module is mainly caused by the power consumption for driving IC or backlight, thus in other embodiments, is judging it is driving IC It, can also be by comparing the power consumption of driving IC and the power consumption of backlight during temperature drift at the temperature drift or backlight at place Size judged.

S30:Work as TIC> TBLAnd when the temperature of IC being driven to be more than driving IC temperature pre-warning values, reduce the refreshing of driving IC frequently Rate;

When the temperature of the driving IC of display module is more than the temperature of backlight, it is possible to determine that the caloric value master of display screen , in order to further regulate and control exactly to display screen and terminal into trip temperature, drive can be further detected by IC is driven to cause The temperature of dynamic IC, and when driving the temperature of IC beyond corresponding default early warning value namely beyond driving IC temperature pre-warning values, drop The refreshing frequency of low driving IC.In order to increase the good experience of user, it is necessary to control the operating temperature of display screen to client Experience optimal preset temperature, at the same in order to prevent display screen influenced in the case of long-time temperature drift its health status and Service life to display screen, it is necessary to carry out reducing power consumption or radiating treatment, it is contemplated that and the power consumption of display screen is mainly caused by driving IC, thus It needs driving the temperature of IC more than the processing for carrying out reducing refreshing frequency when driving IC temperature pre-warning values to it.

S30:Work as TBL> TICAnd the temperature at backlight reduces the work(of backlight when being more than backlight temperature pre-warning value Rate.

Similarly, when the temperature of the backlight of display module is more than the temperature of driving IC, it is possible to determine that the hair of display screen Heat is mainly caused by backlight, can be further in order to further regulate and control exactly to display screen and terminal into trip temperature The temperature of backlight is detected, and when the temperature of backlight exceeds backlight temperature pre-warning value, reduces the power of backlight.

The control method of the display module of the embodiment of the present invention, several temperature in the LCD terminal area by obtaining display module The temperature value of the predeterminated position of sensor acquisition is spent, a temperature value set is formed, display mould is compared according to the temperature value set The temperature of driving IC of group and the temperature level of backlight when the temperature of IC is driven to be more than the temperature of backlight, determine display The fever of module reduces driving IC mainly by IC is driven to cause, and when the temperature of IC is driven to be more than driving IC temperature pre-warning values Refreshing frequency;When the temperature of backlight is more than the temperature of driving IC, determine that the fever of display module is mainly drawn by backlight It rises, and when the temperature of backlight is more than backlight temperature pre-warning value, reduces the power of backlight.The control method passes through reduction The power of backlight or the refreshing frequency for reducing driving IC, reduce the power consumption of display module, also correspondingly improve display mould Thermal diffusivity of the group at driving IC and backlight.

Further, if the dry temperature sensor includes the first TFT sensors, the 2nd TFT sensors and the 3rd TFT and passes Sensor;

The first TFT sensors are arranged at the left side in the LCD terminal area, and the 2nd TFT sensors are arranged at institute The intermediate lower section in LCD terminal area is stated, the 3rd TFT sensors are arranged at the right side in the LCD terminal area;

The first TFT sensors, the 2nd TFT sensors and the 3rd TFT sensors are connected into the input of the driving IC PIN。

In the present embodiment, whether it is more than corresponding default early warning to judge to drive the temperature of IC or backlight exactly Value for the installation site of driving IC and backlight in an lcd, is provided with three TFT (thin film transistor (TFT)) in LCD terminal area Sensor, such as the first TFT sensors, the 2nd TFT sensors and the 3rd TFT sensors, since LCD terminal area is arranged on TFT layer Between CF layers, and the first TFT sensors, the 2nd TFT sensors and the 3rd TFT sensors are connected into the driving IC's Input PIN, the input PIN for driving IC be it is single, output PIN be it is double, the first TFT sensors, the 2nd TFT sensors and 3rd TFT sensors carry out temperature change feedback by the input PIN.The LCD terminal area is comparatively closer to described IC is driven, thus the first TFT sensors are arranged to the left side in the LCD terminal area, the main temperature monitored at backlight Degree, by the 2nd TFT sensors be arranged at the LCD terminal area among lower section, at main monitoring driving IC and backlight Temperature, the 3rd TFT sensors are arranged to the right side in the LCD terminal area, the main temperature monitored at backlight.

Further, if the predeterminated position that dry temperature sensor gathers in the LCD terminal area for obtaining display module The step of temperature value, one temperature value set of formation, including:

Obtain the temperature value T on the left of the LCD terminal area of the first TFT sensors acquisition1, the 2nd TFT sensors acquisition LCD The temperature value T of lower section among terminal region2And the 3rd TFT sensors acquisition LCD terminal area on the right side of temperature value T3, by temperature value T1, temperature value T2With temperature value T3Form the temperature value set.

In the present embodiment, since the first TFT sensors, the 2nd TFT sensors and the 3rd TFT sensors are connected into driving The input PIN of IC, and the electric current of TFT varies with temperature and a kind of characteristic curve is presented, thus gathered by the first TFT sensors Temperature value T on the left of LCD terminal area1, the 2nd TFT sensors acquisition LCD terminal area among lower section temperature value T2With the 3rd Temperature value T on the right side of the LCD terminal area of TFT sensors acquisition3, it becomes possible to obtain temperature value on the left of LCD terminal area, LCD ends Temperature value on the right side of the sub-district centre temperature of lower zone and LCD terminal area.

As shown in figure 4, the temperature at TFT sensors is higher, corresponding current value is bigger.

Further, T1=m1TBL+n1TIC, T2=m2TBL+n2TIC, T3=m3TBL+n3TIC;Wherein, m1+n1=1, m2+n2 =1, m3+n3=1.

In the present embodiment, since LCD terminal area is comparatively closer to the driving IC, thus by the first TFT Sensor is arranged at the left side in the LCD terminal area, and the main temperature monitored at backlight such as defines the temperature at backlight For TB, the temperature at IC will be driven to be defined as TI, then the temperature value T at the first TFT sensors1=95%TB+ 5%TI, by described in 2nd TFT sensors be arranged at the LCD terminal area among lower section, the temperature at main monitoring driving IC and backlight, the Temperature value T at two TFT sensors2=50%TB+ 50%TI, the 3rd TFT sensors are arranged at the LCD terminal area Right side, the main temperature monitored at backlight, the temperature value T at the 3rd TFT sensors3=95%TB+ 5%TI

Further, reference Fig. 3, the control method of the display module based on above-described embodiment, step S20, including:

S21:Compare the temperature value T at the 2nd TFT sensors2With the temperature value T at the first TFT sensors1, the 3rd TFT pass Temperature value T at sensor3The sum of between difference;

In the present embodiment, judge that the hot of display module is caused or by backlight by the power consumption or temperature of driving IC Power consumption or temperature caused by Main Basiss be the temperature value and first, second TFT sensors compared at the 2nd TFT sensors Difference between the sum of the temperature value at place, and in LCD real works operation, the temperature and the 3rd at the first TFT sensors Temperature value at TFT sensors is roughly the same, thus above-mentioned manner of comparison can also be temperature value at the first TFT sensors with The average value of the sum of temperature value at 3rd TFT sensors is compared with the half of the temperature value at the 2nd TFT sensors.

S22:Work as T2> T1+T3When, judge to drive the temperature T of ICICMore than the temperature T of backlightBL

When temperature value at the 2nd TFT sensors is more than the sum of temperature value at the first, the 3rd TFT sensors, judge The temperature T of the driving ICICMore than the temperature T of backlightBLNamely display screen is hot mainly by the power consumption or temperature of driving IC Cause.

S23:Work as T2< T1+T3When, judge the temperature T of backlightBLMore than the temperature T of driving ICIC

Similarly, when the temperature value at the 2nd TFT sensors is less than the sum of temperature value at the first, the 3rd TFT sensors, Judge the temperature T of the backlightBLMore than the temperature T of driving ICICNamely display screen it is hot mainly by backlight power consumption or Temperature causes.

Further, reference Fig. 5, the control method of the display module based on above-described embodiment, step S30, including:

S31:Work as TIC> TBLWhen, according to the current value and TFT temperature current characteristic curve meter of three TFT sensor feedbacks Calculate the temperature at driving IC;

In the present embodiment, when the temperature of IC is driven to be more than the temperature of backlight, judge that display screen is hot mainly by driving The temperature or power consumption of dynamic IC causes, and correspondingly, the power consumption of backlight can relatively be ignored, and can be passed at this time according to the first TFT The current value and TFT temperature current characteristic curve of sensor, the 2nd TFT sensors and the 3rd TFT sensor feedbacks calculate driving IC Temperature value.

S32:When the temperature for driving IC is more than driving IC temperature pre-warning values, the first signal is fed back to driving IC, with basis First signal reduces the refreshing frequency of driving IC.

When the temperature at IC is driven to be more than driving IC temperature pre-warning values, the first signal is fed back to the driving IC, it is described IC is driven to generate corresponding first control instruction when receiving first signal, the driving IC is controlled to reduce and refreshes frequency Rate, to reduce the power consumption of driving IC.

Further, reference Fig. 6, the control method of the display module based on above-described embodiment, step S40, including:

S41:Work as TBL> TICWhen, according to the current value and TFT temperature current characteristic curve meter of three TFT sensor feedbacks Calculate the temperature at backlight;

In the present embodiment, when the temperature of backlight is more than the temperature of driving IC, judge that display screen is hot mainly by carrying on the back The temperature or power consumption of light source cause, and correspondingly, driving the power consumption of IC can relatively ignore, and can be passed at this time according to the first TFT The current value and TFT temperature current characteristic curve of sensor, the 2nd TFT sensors and the 3rd TFT sensor feedbacks calculate backlight Temperature value.

S42:When the temperature of backlight is more than backlight temperature pre-warning value, to driving IC feedback secondary signals, with basis The secondary signal turns the pulse width modulated duty cycle of backlight down or control backlight enters default CABC patterns.

It is described to the driving IC feedback secondary signals when temperature at backlight is more than backlight temperature pre-warning value IC is driven corresponding second control instruction to be generated, further according to the second control instruction tune when receiving the secondary signal The pulse width modulated duty cycle or control backlight of small backlight enter default CABC patterns.

The CABA (Content Adaptive Brightness Control, content correspond to backlight control), be Content information device (Image Content Analyzer) circuit is increased newly in LCD drivings IC, it is assumed that when cell phone processor passes Having sent a pictures data, foundation setting is automatic with algorithm after content analyser can calculate and count the data of picture to driving IC Its gray-scale intensity is improved to 30%, then backlight illumination is reduced by 30%, since we are in advance by picture device by analysis Circuit compensation brightness, therefore the display effect very nearly the same with original circuit can be obtained, but reduce 30% backlight power consumption.

In addition, the embodiment of the present invention also proposes a kind of storage medium, and the storage medium storing control program, the control The step of control method of display module as described above is realized when program is executed by processor.

Wherein, control program be performed realized method can refer to display module of the present invention control method it is each Embodiment, details are not described herein again.

It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row His property includes, so that process, method, article or system including a series of elements not only include those elements, and And it further includes other elements that are not explicitly listed or further includes as this process, method, article or system institute inherently Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including this Also there are other identical elements in the process of element, method, article or system.

The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.

Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases The former is more preferably embodiment.Based on such understanding, technical scheme substantially in other words does the prior art Going out the part of contribution can be embodied in the form of software product, which is stored in one as described above In storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions use so that a station terminal equipment (can be mobile phone, Computer, server, air conditioner or network equipment etc.) perform method described in each embodiment of the present invention.

It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made directly or indirectly is used in other relevant skills Art field, is included within the scope of the present invention.

Claims (10)

1. a kind of control method of display module, which is characterized in that be provided with several temperature in the LCD terminal area of the display module Sensor, the control method of the display module comprise the following steps:
If obtaining the temperature value of the predeterminated position of dry temperature sensor acquisition in the LCD terminal area of display module, a temperature is formed Value set;
Compare the temperature T of the driving IC of display module according to the temperature value setICWith the temperature T of backlightBLSize;
Work as TIC> TBLAnd when the temperature of IC being driven to be more than driving IC temperature pre-warning values, the refreshing frequency of driving IC is reduced;
Work as TBL> TICAnd the temperature of backlight reduces the power of backlight when being more than backlight temperature pre-warning value.
2. control method according to claim 1, which is characterized in that if the dry temperature sensor is passed including the first TFT Sensor, the 2nd TFT sensors and the 3rd TFT sensors;
The first TFT sensors are arranged at the left side in the LCD terminal area, and the 2nd TFT sensors are arranged at the LCD Lower section, the 3rd TFT sensors are arranged at the right side in the LCD terminal area among terminal region;
The first TFT sensors, the 2nd TFT sensors and the 3rd TFT sensors are connected into the input PIN of the driving IC.
3. control method according to claim 2, which is characterized in that if in the LCD terminal area for obtaining display module The step of temperature value of the predeterminated position of dry temperature sensor acquisition, one temperature value set of formation, including:
Obtain the temperature value T on the left of the LCD terminal area of the first TFT sensors acquisition1, the 2nd TFT sensors acquisition LCD terminal The temperature value T of lower section among area2And the 3rd TFT sensors acquisition LCD terminal area on the right side of temperature value T3, by temperature value T1、 Temperature value T2With temperature value T3Form the temperature value set.
4. control method according to claim 3, which is characterized in that T1=m1TBL+n1TIC, T2=m2TBL+n2TIC, T3= m3TBL+n3TIC;Wherein, m1+n1=1, m2+n2=1, m3+n3=1.
5. control method according to claim 4, which is characterized in that described that display mould is compared according to the temperature value set The temperature T of the driving IC of groupICWith the temperature T of backlightBLSize the step of, including:
Compare the temperature value T at the 2nd TFT sensors2With the temperature value T at the first TFT sensors1, at the 3rd TFT sensors Temperature value T3The sum of between difference;
Work as T2> T1+T3When, judge to drive the temperature T of ICICMore than the temperature T of backlightBL
Work as T2< T1+T3When, judge the temperature T of backlightBLMore than the temperature T of driving ICIC
6. control method according to claim 5, which is characterized in that described to work as TIC> TBLAnd the temperature of driving IC is more than Drive IC temperature pre-warning values when, reduce driving IC refreshing frequency the step of, including:
Work as TIC> TBLWhen, calculate driving IC's according to the current value of three TFT sensor feedbacks and TFT temperature current characteristic curve Temperature;
When the temperature for driving IC is more than driving IC temperature pre-warning values, the first signal is fed back to driving IC, with according to described first Signal reduces the refreshing frequency of driving IC.
7. control method according to claim 5, which is characterized in that described to work as TBL> TICAnd the temperature of backlight is more than During backlight temperature pre-warning value, the step of reducing the power of backlight, including:
Work as TBL> TICWhen, backlight is calculated according to the current value of three TFT sensor feedbacks and TFT temperature current characteristic curve Temperature;
When the temperature of backlight is more than backlight temperature pre-warning value, to driving IC feedback secondary signals, with according to described second Signal turns the pulse width modulated duty cycle of backlight down or control backlight enters default CABC patterns.
8. a kind of display module, which is characterized in that if the display module include dry temperature sensor, memory, processor and The control program that the memory can simultaneously be run on the processor is stored in, the control program is performed by the processor When, the step of realizing the control method of display module as described in any one of claim 1 to 7.
9. a kind of terminal, which is characterized in that the terminal includes display module as claimed in claim 8.
10. a kind of storage medium, which is characterized in that the storage medium storing control program, the control program is by processor The step of control method of display module as described in any one of claim 1 to 7 is realized during execution.
CN201711497837.1A 2017-12-29 2017-12-29 Control method, display module, terminal and the storage medium of display module CN108091311A (en)

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EP2020655A1 (en) * 2007-07-25 2009-02-04 Funai Electric Co., Ltd. Liquid crystal display device and liquid crystal television
CN201654370U (en) * 2009-05-25 2010-11-24 康佳集团股份有限公司 Backlight module, liquid crystal display and liquid crystal television
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CN103188388A (en) * 2011-12-30 2013-07-03 宇龙计算机通信科技(深圳)有限公司 Mobile terminal and temperature adjusting method
CN107357385A (en) * 2017-06-09 2017-11-17 努比亚技术有限公司 Method, terminal and computer-readable recording medium based on FREQUENCY CONTROL temperature

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2020655A1 (en) * 2007-07-25 2009-02-04 Funai Electric Co., Ltd. Liquid crystal display device and liquid crystal television
CN201654370U (en) * 2009-05-25 2010-11-24 康佳集团股份有限公司 Backlight module, liquid crystal display and liquid crystal television
KR20130015714A (en) * 2011-08-04 2013-02-14 삼성전자주식회사 Back light unit and method for controlling led
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