CN107610676A - The screen brightness control method and screen intensity control system of a kind of intelligent terminal - Google Patents
The screen brightness control method and screen intensity control system of a kind of intelligent terminal Download PDFInfo
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Abstract
The invention provides a kind of screen brightness control method of intelligent terminal and screen intensity control system, wherein, screen brightness control method comprises the following steps：Set the Current Temperatures of intelligent terminal and the corresponding relation of screen driving current；Temperature sensor is called, detects the Current Temperatures of intelligent terminal；According to the Current Temperatures of intelligent terminal and the corresponding relation of screen driving current, screen driving current is adjusted, and then adjust the screen intensity of intelligent terminal.The present invention realizes the temperature control regulation of intelligent terminal screen intensity, when intelligent terminal temperature is higher than preset value, screen intensity is turned down, and the process of high power consumption is closed, use demand can be met, the screen intensity of intelligent terminal is controlled in the comfortable brightness of human eye, power consumption can be reduced again, extends the service life of intelligent terminal, save electricity, be advantageous to extend cruising time, improve the usage experience of user.
Description
Technical field
The present invention relates to intelligent terminal field, more particularly to a kind of screen brightness control method of intelligent terminal and screen it is bright
Spend control system.
Background technology
From intelligent terminal come out since, intelligent terminal manufacturer just constantly improvement product design, it is more and more can not
The function of imagining comes us at one's side, with abundant and mobile Internet the fast development of intelligent terminal function, intelligence
Terminal already instead of the electronic equipment that we much commonly use at one's side, change our life style and the industry on periphery.
Currently, the mode of the screen intensity control (that is, backlight control) of intelligent terminal mainly has following two：
- regulation manually.
Intelligent terminal user can typically set display option or electricity control strip in (Setting) by system
(Power Control Bar) is adjusted manually to the screen intensity of intelligent terminal.
- automatically adjust
Intelligent terminal user can be set by system, and the screen intensity for opening intelligent terminal automatically adjusts.
In the prior art, automatically adjusting for the screen intensity of intelligent terminal is entered according to the intensity of illumination of current environment
Row regulation.Current ambient light intensity is detected by the photoinduction module (Light Sensor) on intelligent terminal, and then is controlled
Backlight module adjusting backlight luminance processed.
In the place that light is more dim, the screen intensity of intelligent terminal can be automatically adjusted to than dark degree, conversely,
In the stronger place of light, the screen intensity of intelligent terminal can be automatically adjusted to brighter degree, without manually operated, use
Person always uses intelligent terminal under optimal brightness, avoids too strong in the place of dark, the screen intensity of intelligent terminal
User's eyes are damaged, or the problem of the screen intensity of intelligent terminal does not secretly see Chu very much under strong light.
The principle that the screen intensity of intelligent terminal automatically adjusts is, using intelligent terminal is preposition, rearmounted two light levels
Device, ambient brightness is detected, screen intensity is automatically adjusted so as to reach, to adapt to human eye comfort standard, and reaches the mesh of economize on electricity
's.Optical signal is converted into electric signal by light sensor, and then identifies light intensity, adjusts brightness successively.
At present, the trend of intelligent terminal screen enlarging is more and more obvious, and increasing company releases 5 cun or more than 5 cun
Large-size screen monitors terminal.Large-size screen monitors terminal can bring preferably display experience to user, but drawback is also clearly, and large-sized screen is more
Add power consumption, while can also cause the notable rising of intelligent terminal temperature, particularly surfing the Net the immersions such as object for appreciation game when long-time should
When being opened with function, intelligent terminal persistent fever can be caused, and then generation scald user, machine may be caused to burn, or even hair
The problems such as raw battery explosion.
Therefore, the invention provides a kind of screen brightness control method of intelligent terminal and screen intensity control system, in
In the intelligent terminal, the Current Temperatures for setting the intelligent terminal are corresponding with the driving current of the screen of the intelligent terminal
Relation；The temperature sensor of the intelligent terminal is called, detects the Current Temperatures of the intelligent terminal；According to the intelligent terminal
Current Temperatures and the intelligent terminal Current Temperatures and the intelligent terminal screen driving current corresponding relation, adjust
The driving current of the screen of the intelligent terminal is saved, and then adjusts the screen intensity of the intelligent terminal.More than being based on, the present invention
The temperature control regulation of intelligent terminal screen intensity is realized, user can according to their needs and mobile phone charge condition, selection intelligence
The temperature control shaping modes of terminal, can meet use demand, and the screen intensity of intelligent terminal is controlled in the comfortable brightness of human eye,
Power consumption can be reduced again, extends the service life of intelligent terminal, saves electricity, be advantageous to extend cruising time, improved user
Usage experience.
The content of the invention
In order to overcome above-mentioned technological deficiency, it is an object of the invention to provide a kind of screen intensity controlling party of intelligent terminal
Method and screen intensity control system.
The invention discloses a kind of screen brightness control method of intelligent terminal, comprise the following steps：
In the driving for the Current Temperatures and the screen of the intelligent terminal in the intelligent terminal, setting the intelligent terminal
The corresponding relation of electric current；
The temperature sensor of the intelligent terminal is called, detects the Current Temperatures of the intelligent terminal；
According to the Current Temperatures of the Current Temperatures of the intelligent terminal and the intelligent terminal and the screen of the intelligent terminal
The corresponding relation of the driving current of curtain, the driving current of the screen of the intelligent terminal is adjusted, and then adjust the intelligent terminal
Screen intensity.
Preferably, it is whole according to the Current Temperatures of the Current Temperatures of the intelligent terminal and the intelligent terminal and the intelligence
The corresponding relation of the driving current of the screen at end, the driving current of the screen of the intelligent terminal is adjusted, and then adjust the intelligence
The step of screen intensity of energy terminal, includes：
In in the intelligent terminal, a high temperature threshold value is set；
Compare the Current Temperatures of the intelligent terminal and the high temperature threshold value；
When the Current Temperatures of the intelligent terminal are higher than the high temperature threshold value, according to the Current Temperatures of the intelligent terminal
And the Current Temperatures of the intelligent terminal and the corresponding relation of the driving current of the screen of the intelligent terminal, adjust the intelligence
The driving current of the screen of terminal, and then adjust the screen intensity of the intelligent terminal.
Preferably, when the Current Temperatures of the intelligent terminal are higher than the high temperature threshold value, according to the intelligent terminal
The Current Temperatures of Current Temperatures and the intelligent terminal and the corresponding relation of the driving current of the screen of the intelligent terminal, regulation
The driving current of the screen of the intelligent terminal, and then also include after the step of screen intensity of the regulation intelligent terminal：
Exit in the application program of the intelligent terminal running background；
Flash the indicator lamp of the intelligent terminal.
Preferably, the screen brightness control method also includes：
In in the intelligent terminal, a low temperature threshold is set；
The temperature sensor of the intelligent terminal is called, detects the Current Temperatures of the intelligent terminal；
Compare the Current Temperatures of the intelligent terminal and the low temperature threshold；
When the Current Temperatures of the intelligent terminal are less than the low temperature threshold, recover the drive of the screen of the intelligent terminal
Streaming current, and then recover the screen intensity of the intelligent terminal.
Preferably, the screen brightness control method also includes：
In in the intelligent terminal, a luminance threshold is set；
Detect the present intensity of the intelligent terminal；
Compare the present intensity of the intelligent terminal and the luminance threshold；
When the present intensity of the intelligent terminal is less than the luminance threshold, stop adjusting the screen of the intelligent terminal
Driving current, and then stop adjusting the screen intensity of the intelligent terminal.
The invention also discloses a kind of screen intensity control system of intelligent terminal, the screen intensity control system bag
Include：Setting module, detection module, adjustment module；
The setting module, it is whole in the Current Temperatures and the intelligence in the intelligent terminal, setting the intelligent terminal
The corresponding relation of the driving current of the screen at end；
The detection module, the temperature sensor of the intelligent terminal is called, detect the Current Temperatures of the intelligent terminal；
The adjustment module, communicated to connect with the setting module, detection module, according to the current temperature of the intelligent terminal
The Current Temperatures of degree and the intelligent terminal and the corresponding relation of the driving current of the screen of the intelligent terminal, adjust the intelligence
The driving current of the screen of energy terminal, and then adjust the screen intensity of the intelligent terminal.
Preferably, the adjustment module includes：High temperature setup unit, high temperature judging unit, high temperature adjustment unit；
The high temperature setup unit, in the intelligent terminal, set a high temperature threshold value；
The high temperature judging unit, communicated to connect with the detection module, high temperature setup unit, the intelligent terminal
Current Temperatures and the high temperature threshold value；
The high temperature adjustment unit, communicated to connect with the high temperature judging unit, when the Current Temperatures of the intelligent terminal
During higher than the high temperature threshold value, according to the Current Temperatures of the Current Temperatures of the intelligent terminal and the intelligent terminal and the intelligence
The corresponding relation of the driving current of the screen of energy terminal, adjusts the driving current of the screen of the intelligent terminal, and then adjusts institute
State the screen intensity of intelligent terminal.
Preferably, the high temperature adjustment unit, exit in the application program of the intelligent terminal running background, described in flicker
The indicator lamp of intelligent terminal.
Preferably, the screen intensity control system also includes recovery module；
The recovery module includes：Low temperature setup unit, low temperature detection unit, low temperature judging unit, low temperature adjustment unit；
The low temperature setup unit, in the intelligent terminal, set a low temperature threshold；
The low temperature detection unit, the temperature sensor of the intelligent terminal is called, detects the current of the intelligent terminal
Temperature；
The low temperature judging unit, communicated to connect with the low temperature setup unit, low temperature detection unit, the intelligence
The Current Temperatures of terminal and the low temperature threshold；
The low temperature adjustment unit, communicated to connect with the low temperature judging unit, when the Current Temperatures of the intelligent terminal
During less than the low temperature threshold, the adjustment module is controlled to recover the driving current of the screen of the intelligent terminal, and then recover
The screen intensity of the intelligent terminal.
Preferably, the screen intensity control system also includes limitation module；
The limitation module includes：Brightness settings unit, brightness detection unit, brightness judging unit, brightness adjusting unit；
The brightness settings unit, in the intelligent terminal, set a luminance threshold；
The brightness detection unit, detect the present intensity of the intelligent terminal；
The brightness judging unit, communicated to connect with the brightness settings unit, brightness detection unit, the intelligence
The present intensity of terminal and the luminance threshold；
The brightness adjusting unit, communicated to connect with the brightness judging unit, when the present intensity of the intelligent terminal
During less than the luminance threshold, the adjustment module is controlled to stop adjusting the driving current of the screen of the intelligent terminal, and then
Stop adjusting the screen intensity of the intelligent terminal.
After employing above-mentioned technical proposal, compared with prior art, have the advantages that：
1. screen brightness control method provided by the invention and screen intensity control system, it is bright to realize intelligent terminal screen
The temperature control regulation of degree, user according to their needs and mobile phone charge condition, can select the temperature control shaping modes of intelligent terminal, both
Use demand can be met, the screen intensity of intelligent terminal is controlled in the comfortable brightness of human eye, power consumption can be reduced again, extend intelligence
The service life of energy terminal, saves electricity, is advantageous to extend cruising time, improves the usage experience of user.
Brief description of the drawings
Fig. 1 is the schematic flow sheet for the screen brightness control method for meeting one embodiment of the present invention；
Fig. 2 is the schematic flow sheet of the high temperature brightness regulation step of Fig. 1 screen brightness control method；
Fig. 3 is the schematic flow sheet of the high temperature brightness regulation step of Fig. 2 screen brightness control method；
Fig. 4 is the schematic flow sheet of the low temperature luminance recovery step of Fig. 1 screen brightness control method；
Fig. 5 is that the low-light level of Fig. 1 screen brightness control method limits the schematic flow sheet of regulating step；
Fig. 6 is the structural representation for the screen intensity control system for meeting one embodiment of the present invention.
Reference：
100- screen intensity control systems；
11- setting modules；
12- detection modules；
13- adjustment modules；
14- recovery modules；
15- limits module.
Embodiment
Advantages of the present invention is expanded on further below in conjunction with accompanying drawing and specific embodiment.
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects being described in detail in claims, of the invention.
It is only merely for the purpose of description specific embodiment in terminology used in the present invention, and is not intended to be limiting the disclosure.
It is also intended in " one " of the singulative of the invention with used in appended claims, " described ", "the" etc. including majority
Form, unless context clearly shows that other implications.
In the description of the invention, unless otherwise prescribed with restriction, it is necessary to which explanation, term " connection " should do broad sense reason
Solution, for example, it may be mechanical connection or electrical connection or the connection of two element internals, can be joined directly together, also may be used
To be indirectly connected by intermediary, for the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term.In follow-up description, the suffix using " module " for representing element, " unit " etc. is only
Be advantageous to the explanation of the present invention, itself do not have a specific meaning.Therefore, " module ", " unit " can be used mixedly.
The screen brightness control method and screen intensity control system of the present invention, intelligent terminal is can apply to, intelligence is eventually
End can in a variety of manners, for example, the intelligent terminal described in the present invention can include such as mobile phone, smart phone, pen
Remember this computer, PDA (personal digital assistant), PAD (tablet personal computer), PMP (portable media player), guider, intelligence
The mobile terminal of energy wrist-watch etc., and the fixed terminal of digital TV, desktop computer etc..Hereinafter it is assumed that terminal is mobile
Terminal, and assume that the mobile terminal is smart mobile phone, the present invention will be described.However, it will be understood by those skilled in the art that
It is that in addition to being used in particular for moving the element of purpose, construction according to the embodiment of the present invention can also apply to fix
The terminal of type.For ease of description, the embodiment of the present invention is illustrated by taking smart mobile phone as an example, and other application scene is mutually joined
According to.
With reference to figure 1, a kind of screen brightness control method of intelligent terminal, comprise the following steps：
S100：In the Current Temperatures and the screen of the intelligent terminal that in the intelligent terminal, set the intelligent terminal
Driving current corresponding relation；
S200：The temperature sensor of the intelligent terminal is called, detects the Current Temperatures of the intelligent terminal；
S300：According to the Current Temperatures of the Current Temperatures of the intelligent terminal and the intelligent terminal and the intelligent terminal
Screen driving current corresponding relation, adjust the driving current of the screen of the intelligent terminal, and then adjust the intelligence
The screen intensity of terminal.
By taking smart mobile phone as an example, screen brightness control method provided by the present invention, one can be set in intelligent terminal
The temperature detect switch (TDS) of screen intensity realizes the regulation of screen intensity, meanwhile, by the Current Temperatures of intelligent terminal and the screen of intelligent terminal
The driving current or driving voltage or pulse width modulated duty cycle modulated signal of curtain connect, and set a corresponding relation, lead to
The height of excess temperature controls screen driving current or driving voltage or pulse width modulated duty cycle modulated signal, and then adjusts
Screen intensity.
User can be manually opened or closes temperature detect switch (TDS), or automatic detection intelligent terminal temperature height, in intelligent terminal temperature
Automatically turned on when spending high, or when intelligent terminal temperature is normal, it is automatic to close.Open the temperature detect switch (TDS), then intelligent terminal
Screen intensity will be automatically adjusted in real time according to the Current Temperatures of intelligent terminal.When intelligent terminal temperature is too high, intelligence is turned down
The screen intensity of energy terminal, the power consumption of intelligent terminal is reduced, saves intelligent terminal electricity；When the temperature of intelligent terminal returns to just
During normal temperature, according to the Current Temperatures of intelligent terminal and the corresponding relation of the driving current of the screen of intelligent terminal, intelligence is heightened
In the screen intensity of terminal to human eye comfort standard.The temperature detect switch (TDS) is closed, then the screen intensity of intelligent terminal will be according to current
The brightness of environment is automatically adjusted in real time.
It is understood that the temperature detect switch (TDS) of control screen intensity can be designed as physical switches on smart mobile phone, touch
Control switch or only some certain gestures, adjusting switch can be physical switches, entities that be existing on smart mobile phone or newly setting
In the diversified forms such as button, physical button, entity rotatable key or smart mobile phone in camera or flashlight application program
The hand such as downslide, long-press or so cunning in long-press in the diversified forms such as touch switch, touch controlled key or smart mobile phone screen
Gesture, the concrete form of temperature detect switch (TDS) is not defined.
Meanwhile the screen intensity of intelligent terminal can realize photosensitive regulation and/or temperature control regulation.Closing temperature detect switch (TDS)
When, intelligent terminal realizes photosensitive regulation, and when opening temperature detect switch (TDS), intelligent terminal can close photosensitive regulation, only open temperature control
Regulation, or realize the combination of photosensitive regulation and temperature control regulation.
1st, it is popular on intelligent terminal to carry predominantly two kinds at present of screen：TFT-LCD and OLED, it shows and screen intensity
Principles of Regulation are as follows：
(1) TFT-LCD displaying principles are adjusted with screen intensity
TFT-LCD construction is complex, and its main member is：Fluorescent tube, liquid crystal and TFT elements, Polarizer, storage
Electric capacity, colored filter etc..
- fluorescent tube
Fluorescent tube, i.e. backlight.Display devices of the TFT-LCD as passive-type, it is non-luminous in itself, it is necessary to by the external world
Light show.Therefore, backlight is one of part the most basic in TFT-LCD.The backlight commonly used in TFT-LCD
Source mainly has：Electroluminescent (EL backlights), light emitting diode (LED backlight), cold-cathode fluorescence lamp (CCFL backlights).Every kind of backlight
The characteristics of and applicable scene be different from, wherein electroluminescence backlight source thickness of thin, it is luminous uniformly, backlight it is low in energy consumption, can
For different colours, but it is usually used in LCD white light backlights；Back light source in LED is mainly used in character type module, and light is stronger,
But energy consumption is big, typically it is disposed directly at behind LCD, the light of different colours can be sent；And cold-cathode fluorescence lamp backlight energy
Consume low, be mainly used in graphic LCD.
- Polarizer
Polarizer only allows the light in certain vibration direction to pass through, main function be filter out backlight send it is nonspecific
The light source of polarization direction, it is translated into polar biased light.What this polar biased light was passed through by the torsion of liquid crystal molecule to control light again
How much, so as to finally control the purpose of the light and shade of liquid crystal display.
- colored filter
Colored filter is the basis of the colored display of TFT-LCD display devices.It is a kind of optical lightscreening of apparent color
Piece, it is mainly intended to the small range wave band light wave passed through by accurately selection, while reflects away other wave bands for being not intended to pass through
To reach the purpose of optical filtering.On TFT-LCD display devices, colored filter is primarily used to filter the color light of red, green, blue three
's.Each pixel on TFT-LCD is made up of three sub- pixels of red, green, blue.The number and liquid of sub-pixel quantity
The resolution sizes of crystal display screen are directly related, such as one piece of 1280*1024 TFT-LCD display device panels are of virtually
3840*1024 sub-pixel and transistor.
- liquid crystal
Most basic composition component of the liquid crystal as TFT-LCD, it is the most important factor for changing light polarized condition, leads to
Electric power and elastic force are crossed to together decide on the arrangement of liquid crystal molecule and polarized condition.
-TFT
For TFT-LCD during normal display image, the effect of the TFT in device is comparable to an electronic switch, TFT
Source electrode be to be connected on column drive wire, and TFT grid then be connection horizontal scanning line on, its drain electrode is then connected on liquid crystal
On pixel electrode, so, when the voltage for being added in horizontal scanning line is the row gate voltage, all TFT of this line are opened
Gating, and the signal on column drive wire then controls the pixel electrode of liquid crystal to drive liquid crystal to carry out luminescence display.It is and added
The size and display data of voltage are corresponding, and the voltage can also be referred to as grayscale voltage.This driving frameworks of TFT-LCD and display
Mode is actually using the mode of dynamic driving.Generally speaking, this type of drive is exactly to be carried by external drive circuit
For row scanning and column scan signal, so that TFT-LCD panels are progressively scanned and light display line by line.
For TFT-LCD in display image, the light intensity that backlight is sent is to need to filter by the intensity of liquid crystal molecule array
Just finally project and perceived outside display screen by human eye afterwards.Therefore, the effect for the image that human eye is finally seen mainly has two
Most important factor is the intensity of TFT-LCD backlights and the light transmission rate of liquid crystal molecule respectively come what is determined, and liquid crystal molecule
Light transmission rate be directly proportional with the size of the value of the pixel of image.It is specific corresponding to the value of each pixel of general pattern
Pixel drive voltage, the driving voltage of the pixel is adjusted by changing pixel value can, the liquid crystal is controlled so as to reach
The purpose of light transmission rate.And the regulation of backlight intensity mainly relies on the size of the driving voltage of liquid crystal backlight.TFT-LCD's
Power consumption mainly comes from backlight, the power consumption for the reduction liquid crystal that the intensity by reducing backlight can be suitably, but simultaneously
Also the final display quality of image can be caused to be deteriorated.At this point it is possible to the pixel value that image is adjusted by image enhaucament scheduling algorithm is made
To compensate the decline of picture quality.Therefore, TFT-LCD liquid crystal displays brightness depends primarily on two parts：TFT-LCD liquid crystal lights are saturating
Rate and backlight luminous intensity are crossed, i.e. the pixel value of adjustable liquid crystal display or PWM duty cycle adjustment backlight equivalent current can adjust TFT-LCD
The brightness of liquid crystal display.
(2) OLED displaying principles are adjusted with screen intensity
The display device that OLED has a high potential as the next generation, it is to teach professor Deng Qingyun by Chinese descendant in America to send out in an experiment
Existing, the core on construction is luminous organic material, when an electric current passes through it, these organic material luminescence displays, its self-luminous spy
Property make it that OLED power consumption is lower compared to for TFT-LCD.Difference on construction has directly resulted in the principle that OLED is shown
It is entirely different with TFT-LCD displaying principles.
OLED basic structure is also improving with the continuous development of OLED technology, but mainly in OLED structure
Interbed is carried out, and have passed through improvement of the individual layer to multilayer.Currently used OLED structure is using three layers of electrode intermediate layer
Structure, including electron transfer layer (ETL), organic luminous layer (ELL) and hole transmission layer (HTL).
Glass substrate in OLED structure is for supporting whole OLED display device, typically requires surfacing light
It is sliding, need to pre-process before packaging.Anode is usually to be made up of indium tin oxide (ITO) electro-conductive glass, and negative electrode typically uses
Be that the organic metal of low work function is made, vapour deposition method can be used to prepare.Other three layers of intermediate layers have its specific
Effect.
- electron transfer layer
The main function of electron transfer layer be just to aid in the electronics that negative electrode discharges can more smoothly reach it is organic
In the middle of luminescent material, so as to improve luminous efficiency.Electron transfer layer typically uses fluorescent dye compound, must be requested that heat
Stability and surface stability.
- hole transmission layer
Hole transmission layer to act on electron transfer layer similar, be mainly to aid in hole caused by anode smoothly, efficiently
Reach among luminous organic material, improve injection and the transmittability in hole.The layer also requires that thermal stability will get well, most of
Using more phenyl virtue amine organic compounds, IPD is commonly called as.
- organic luminous layer
Organic luminous layer is to be made by adulterating the fluorescent dopants of a few percent into fluorescence host material.Matrix
Material is generally also identical with the material of the use of electron transfer layer or hole transmission layer, it is desirable to light and heat chemical stability, together
When also to possess higher quantum efficiency.
OLED type of drive includes passive drive and active drive.In OLED passive drive modes, there is static and dynamic
Drive circuit two ways.Wherein, the negative electrode of each light emitting pixel point is also connected together in static drive circuit mode, sun
Pole then discrete extraction, is generally adopted by common cathode mode and drives, and this is essentially identical with LCD static drive mode.And dynamic
It is also essentially identical with LCD dynamic driving mode in drive circuit mode, wherein being sent out respectively come corresponding with row, column signal data
Two electrodes of light pixel, so as to be formed driving matrix, so drive display by way of progressive scan is lighted.
The characteristics of OLED passive drive modes is relatively simple for structure, but driving voltage is higher, and the OLED for not being suitable for giant-screen is shown.
OLED active matrix drivings mode can carry out separately adjustable to each pixel, it is easy to accomplish high brightness and high-resolution
Rate.Meanwhile it uses constant-current drive circuit to be integrated into very well in display screen, be easier to realize it is integrated, suitable for large-size screen monitors
OLED display screen.At present, active matrix driving mode is also to become a kind of main OLED type of drive.
Independent luminescent material method in OLED, it is that luminescence display is carried out using the color material of red, green, blue three, this method
Luminous efficiency is more outstanding compared to other two methods, is the conventional techniques of current OLED.The companies such as Samsung, SONY adopt mostly
It is this mode.The benefit of this mode is that luminous utilization rate is higher, but technological requirement is also higher simultaneously, the base of RGB three
Efficiency, the purity of color are difficult to consistent with the life-span.
Color Conversion method generates red bluish-green three kinds of face mainly based on blue light, by blue light by optical color conversion film conversion
Color.Because the blue light in environment can influence this transfer process, therefore, for other colored implementations, this mode is real
The contrast of existing colored display is relatively low.
Colored filter film rule is similar with the realization that LCD color liquid crystals are shown, is light emitting source using white light, passes through colour
Light filter film produces the color of RGB three so as to realize colored display.The luminous efficiency of this mode is imitated in these three modes
Rate is minimum, because the presence of filter layer can cause to lose a part of brightness, this mode realizes that the contrast of display is certain most
Alright.Meanwhile this mode is simple in construction, both economical, relatively easy realization.Also have in this way in LG company at present
Realize colored display.
OLED display screen is different from the displaying principle of TFT-LCD display screens, and lighting for it shows and do not need backlight
Source, but rely on the effect of external electric field to trigger injection, migration and the recombination process of carrier, migrated with this to produce exciton machine
Light and release energy.The luminous caused energy consumption size of OLED display screen and luminous intensity are proportional.From one
For in the angle of individual pixel, when the brightness value of pixel is bigger, then the luminous intensity of the point is also bigger；When this picture
Then it is most dim spot when the value of vegetarian refreshments is zero, now luminous intensity is minimum.Therefore, the display brightness of OLED screen curtain is solely dependent upon often
Individual pixel value driving voltage.The display brightness of OLED screen curtain to be adjusted only needs to adjust the driving voltage of each pixel value.
3rd, ambient light sensor
Ambient light sensor can perceive ambient light situation, and it is bright to inform that process chip automatically adjusts display backlight
Degree, reduce the power consumption of product.For example, in the Mobile solutions such as mobile phone, notebook, tablet personal computer, the electricity of display consumption is high
Up to the 30% of battery total electricity, the working time of battery can be extended to greatest extent using ambient light sensor.On the other hand,
Ambient light sensor contributes to display to provide soft picture.When ambient brightness is higher, the liquid of use environment optical sensor
Crystal display can be tuned into high brightness automatically.When external environment is dark, display will be tuned into low-light level.Ambient light sensor one
As above the screen, for example, be located at smart mobile phone square meter upper right side, secondary camera left side, it can be current according to smart mobile phone
Residing light luminance, smart mobile phone screen intensity is automatically adjusted, optimal visual effect is brought to user.
Ambient light sensor is mainly made up of light-sensitive element.Light-sensitive element quickly grows, is various in style, using wide at present
It is general.It is marketed to have photo resistance, photodiode, phototriode, silicon photocell etc..Generally there is several methods that can be right
Light is detected, such as realized by using phototransistor, photo resistance or photodiode, but for applying now
For total light sensation requirement, the monolithic photodiode based on IC is one of best selection.Photodiode is to be used to detect
Light and the semiconductor for generating electric current, its based single crystal silicon chip construction forms, similar with the crystal silicon chip for producing integrated circuit.
One typical sensor application frame diagram includes a photodiode, a current amplifier and a passive low-pass filter
Device, to detect and handle output voltage signal caused by light input.
4th, temperature sensor
- thermal resistor
Many for the kind of sensor of measurement temperature, thermal resistor is exactly one of them.Many thermistors have
Negative temperature coefficient (NTC), that is to say, that its resistance value can raise when temperature declines.In all passive type temperature sensors,
Sensitivity (i.e. temperature often changes the change of resistance when once) highest of thermistor, but resistance/temperature curve of thermistor
It is nonlinear.In the present invention, the Current Temperatures of intelligent terminal can be detected by the thermistor on intelligent mobile phone battery.
- resistance temperature detector
Resistance temperature detector (RTD) is actually the different wire of a Gent, and its resistance is varied with temperature and changed, and is led to
Normal RTD materials include copper, platinum, nickel and nickel iron alloy.RTD element can be a wire or thin film, use
The method of plating or sputtering is coated in ceramic-like materials substrate.
- thermocouple
Thermocouple is combined into by two kinds of different metals, and it can produce small voltage when heated, and voltage swing depends on
Two kinds of metal materials of thermocouple are formed, iron-constantan (J-type), copper constantan (T-shaped) and chromium-aluminium (K-type) thermocouple are the most frequently used
Three kinds.
Voltage very little caused by thermocouple, generally only several millivolts.Voltage change when K-type electric thermo-couple temperature often changes 1 DEG C
Only about 40 μ V, therefore the voltage change measurement accuracy that measuring system wants that 4 μ V can be measured can just reach 0.1 DEG C.Due to two
The different types of metal of kind, which is combined together, can produce potential difference, so the connection of thermocouple and measuring system can also produce electricity
Pressure.Typically tie point is placed on heat insulation to reduce this influence, two nodes is sentenced under same temperature, missed so as to reduce
Difference.The temperature of heat insulation sometimes can be also measured, with the influence of compensation temperature.
- solid state thermal sensor
Simplest semiconductor temperature sensor is exactly a PN junction, for example, diode or transistor base-emitter stage it
Between PN junction.If a constant current flows through the silicon PN junction of forward bias, forward voltage drop can reduce when temperature often changes 1 DEG C
1.8mV.The interface shape of semiconductor transducer is various, can to serial SPI/ micro-lines interface from voltage output.
With reference to figure 2, in a preferred embodiment, S300：According to the Current Temperatures of the intelligent terminal and the intelligence eventually
The Current Temperatures at end and the corresponding relation of the driving current of the screen of the intelligent terminal, adjust the screen of the intelligent terminal
Driving current, and then the step of screen intensity of the regulation intelligent terminal includes：
S310：In in the intelligent terminal, a high temperature threshold value is set；
S320：Compare the Current Temperatures of the intelligent terminal and the high temperature threshold value；
S330：When the Current Temperatures of the intelligent terminal are higher than the high temperature threshold value, according to working as the intelligent terminal
The Current Temperatures of preceding temperature and the intelligent terminal and the corresponding relation of the driving current of the screen of the intelligent terminal, adjust institute
The driving current of the screen of intelligent terminal is stated, and then adjusts the screen intensity of the intelligent terminal.
With reference to figure 3, in a preferred embodiment, S330：When the Current Temperatures of the intelligent terminal are higher than the high temperature threshold
During value, according to the screen of the Current Temperatures of the Current Temperatures of the intelligent terminal and the intelligent terminal and the intelligent terminal
The corresponding relation of driving current, the driving current of the screen of the intelligent terminal is adjusted, and then adjust the screen of the intelligent terminal
Also include after the step of curtain brightness：
S340：Exit in the application program of the intelligent terminal running background；
S350：Flash the indicator lamp of the intelligent terminal.
In above-described embodiment, a high temperature threshold value is set in intelligent terminal, such as 80 degree, when the temperature of intelligent terminal reaches this
During high temperature threshold value, start that the screen intensity of intelligent terminal is adjusted, for example, screen intensity is turned down to less than 50%, together
When, the application program of intelligent terminal running background is also can detect, exits the power consumption highest application journey of intelligent terminal running background
Sequence, or exit the power consumption of intelligent terminal running background and reach more than 20% application program, so as to reduce intelligent terminal power consumption, separately
Outside, the indicator lamp of sparkling intelligent terminal is gone back, prompts user's intelligent terminal Current Temperatures too high, according to intelligent terminal Current Temperatures
Difference, the indicator lamps of different colours is flashed, for example, flashing yellow lamp when intelligent terminal Current Temperatures are 80 degree, when reaching 90 degree
Flashing red light etc..
With reference to figure 4, in a preferred embodiment, the screen brightness control method also includes：
In in the intelligent terminal, a low temperature threshold is set；
The temperature sensor of the intelligent terminal is called, detects the Current Temperatures of the intelligent terminal；
Compare the Current Temperatures of the intelligent terminal and the low temperature threshold；
When the Current Temperatures of the intelligent terminal are less than the low temperature threshold, recover the drive of the screen of the intelligent terminal
Streaming current, and then recover the screen intensity of the intelligent terminal.
With reference to figure 5, in a preferred embodiment, the screen brightness control method also includes：
In in the intelligent terminal, a luminance threshold is set；
Detect the present intensity of the intelligent terminal；
Compare the present intensity of the intelligent terminal and the luminance threshold；
When the present intensity of the intelligent terminal is less than the luminance threshold, stop adjusting the screen of the intelligent terminal
Driving current, and then stop adjusting the screen intensity of the intelligent terminal.
In above-described embodiment, a low temperature threshold is set in intelligent terminal, such as 30 degree, when the Current Temperatures of intelligent terminal drop
As little as the low temperature threshold when, recover the screen intensity of intelligent terminal；And/or a luminance threshold is set in intelligent terminal, such as
20%, when intelligent terminal temperature is too high, turns down screen intensity to 20%, maintain minimum brightness.
With reference to figure 6, present invention also offers a kind of screen intensity control system 100 of intelligent terminal, the screen intensity
Control system 100 includes：Setting module 11, detection module 12, adjustment module 13；
The setting module 11, in the Current Temperatures and the intelligence that in the intelligent terminal, set the intelligent terminal
The corresponding relation of the driving current of the screen of terminal；
The detection module 12, the temperature sensor of the intelligent terminal is called, detect the current temperature of the intelligent terminal
Degree；
The adjustment module 13, communicated to connect with the setting module 11, detection module 12, according to the intelligent terminal
The Current Temperatures of Current Temperatures and the intelligent terminal and the corresponding relation of the driving current of the screen of the intelligent terminal, regulation
The driving current of the screen of the intelligent terminal, and then adjust the screen intensity of the intelligent terminal.
In a preferred embodiment, the adjustment module 13 includes：High temperature setup unit, high temperature judging unit, high temperature are adjusted
Save unit；
The high temperature setup unit, in the intelligent terminal, set a high temperature threshold value；
The high temperature judging unit, communicated to connect with the detection module 12, high temperature setup unit, the intelligence is eventually
The Current Temperatures at end and the high temperature threshold value；
The high temperature adjustment unit, communicated to connect with the high temperature judging unit, when the Current Temperatures of the intelligent terminal
During higher than the high temperature threshold value, according to the Current Temperatures of the Current Temperatures of the intelligent terminal and the intelligent terminal and the intelligence
The corresponding relation of the driving current of the screen of energy terminal, adjusts the driving current of the screen of the intelligent terminal, and then adjusts institute
State the screen intensity of intelligent terminal.
In a preferred embodiment, the high temperature adjustment unit, exit in the application journey of the intelligent terminal running background
Sequence, flash the indicator lamp of the intelligent terminal.
In a preferred embodiment, the screen intensity control system 100 also includes recovery module 14；
The recovery module 14 includes：Low temperature setup unit, low temperature detection unit, low temperature judging unit, low temperature regulation are single
Member；
The low temperature setup unit, in the intelligent terminal, set a low temperature threshold；
The low temperature detection unit, the temperature sensor of the intelligent terminal is called, detects the current of the intelligent terminal
Temperature；
The low temperature judging unit, communicated to connect with the low temperature setup unit, low temperature detection unit, the intelligence
The Current Temperatures of terminal and the low temperature threshold；
The low temperature adjustment unit, communicated to connect with the low temperature judging unit, when the Current Temperatures of the intelligent terminal
During less than the low temperature threshold, the adjustment module 13 is controlled to recover the driving current of the screen of the intelligent terminal, so it is extensive
The screen intensity of the multiple intelligent terminal.
In a preferred embodiment, the screen intensity control system 100 also includes limitation module 15；
The limitation module 15 includes：Brightness settings unit, brightness detection unit, brightness judging unit, brightness regulation list
Member；
The brightness settings unit, in the intelligent terminal, set a luminance threshold；
The brightness detection unit, detect the present intensity of the intelligent terminal；
The brightness judging unit, communicated to connect with the brightness settings unit, brightness detection unit, the intelligence
The present intensity of terminal and the luminance threshold；
The brightness adjusting unit, communicated to connect with the brightness judging unit, when the present intensity of the intelligent terminal
During less than the luminance threshold, control the adjustment module 13 to stop adjusting the driving current of the screen of the intelligent terminal, enter
And stop adjusting the screen intensity of the intelligent terminal.
It should be noted that embodiments of the invention have preferable implementation, and not the present invention is made any type of
Limitation, any one skilled in the art change or are modified to possibly also with the technology contents of the disclosure above equivalent effective
Embodiment, as long as without departing from the content of technical solution of the present invention, above example is made according to technical spirit of the invention
Any modification or equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (10)
1. a kind of screen brightness control method of intelligent terminal, it is characterised in that comprise the following steps：
In the Current Temperatures and the driving current of the screen of the intelligent terminal that in the intelligent terminal, set the intelligent terminal
Corresponding relation；
The temperature sensor of the intelligent terminal is called, detects the Current Temperatures of the intelligent terminal；
According to the screen of the Current Temperatures of the Current Temperatures of the intelligent terminal and the intelligent terminal and the intelligent terminal
The corresponding relation of driving current, the driving current of the screen of the intelligent terminal is adjusted, and then adjust the screen of the intelligent terminal
Curtain brightness.
2. screen brightness control method as claimed in claim 1, it is characterised in that
According to the screen of the Current Temperatures of the Current Temperatures of the intelligent terminal and the intelligent terminal and the intelligent terminal
The corresponding relation of driving current, the driving current of the screen of the intelligent terminal is adjusted, and then adjust the screen of the intelligent terminal
The step of curtain brightness, includes：
In in the intelligent terminal, a high temperature threshold value is set；
Compare the Current Temperatures of the intelligent terminal and the high temperature threshold value；
When the Current Temperatures of the intelligent terminal are higher than the high temperature threshold value, according to the Current Temperatures of the intelligent terminal and institute
The corresponding relation of the driving current of the Current Temperatures of intelligent terminal and the screen of the intelligent terminal is stated, adjusts the intelligent terminal
Screen driving current, and then adjust the screen intensity of the intelligent terminal.
3. screen brightness control method as claimed in claim 2, it is characterised in that
When the Current Temperatures of the intelligent terminal are higher than the high temperature threshold value, according to the Current Temperatures of the intelligent terminal and institute
The corresponding relation of the driving current of the Current Temperatures of intelligent terminal and the screen of the intelligent terminal is stated, adjusts the intelligent terminal
Screen driving current, and then the step of adjust the screen intensity of the intelligent terminal after also include：
Exit in the application program of the intelligent terminal running background；
Flash the indicator lamp of the intelligent terminal.
4. screen brightness control method as claimed in claim 1, it is characterised in that
The screen brightness control method also includes：
In in the intelligent terminal, a low temperature threshold is set；
The temperature sensor of the intelligent terminal is called, detects the Current Temperatures of the intelligent terminal；
Compare the Current Temperatures of the intelligent terminal and the low temperature threshold；
When the Current Temperatures of the intelligent terminal are less than the low temperature threshold, recover the driving electricity of the screen of the intelligent terminal
Stream, and then recover the screen intensity of the intelligent terminal.
5. screen brightness control method as claimed in claim 1, it is characterised in that
The screen brightness control method also includes：
In in the intelligent terminal, a luminance threshold is set；
Detect the present intensity of the intelligent terminal；
Compare the present intensity of the intelligent terminal and the luminance threshold；
When the present intensity of the intelligent terminal is less than the luminance threshold, stop adjusting the drive of the screen of the intelligent terminal
Streaming current, and then stop adjusting the screen intensity of the intelligent terminal.
A kind of 6. screen intensity control system of intelligent terminal, it is characterised in that
The screen intensity control system includes：Setting module, detection module, adjustment module；
The setting module, in the Current Temperatures and the intelligent terminal that in the intelligent terminal, set the intelligent terminal
The corresponding relation of the driving current of screen；
The detection module, the temperature sensor of the intelligent terminal is called, detect the Current Temperatures of the intelligent terminal；
The adjustment module, communicated to connect with the setting module, detection module, according to the Current Temperatures of the intelligent terminal and
The Current Temperatures of the intelligent terminal and the corresponding relation of the driving current of the screen of the intelligent terminal, adjust the intelligence eventually
The driving current of the screen at end, and then adjust the screen intensity of the intelligent terminal.
7. screen intensity control system as claimed in claim 6, it is characterised in that
The adjustment module includes：High temperature setup unit, high temperature judging unit, high temperature adjustment unit；
The high temperature setup unit, in the intelligent terminal, set a high temperature threshold value；
The high temperature judging unit, communicated to connect with the detection module, high temperature setup unit, the intelligent terminal is worked as
Preceding temperature and the high temperature threshold value；
The high temperature adjustment unit, communicated to connect with the high temperature judging unit, when the Current Temperatures of the intelligent terminal are higher than
It is whole according to the Current Temperatures of the Current Temperatures of the intelligent terminal and the intelligent terminal and the intelligence during high temperature threshold value
The corresponding relation of the driving current of the screen at end, the driving current of the screen of the intelligent terminal is adjusted, and then adjust the intelligence
The screen intensity of energy terminal.
8. screen intensity control system as claimed in claim 7, it is characterised in that
The high temperature adjustment unit, exit in the application program of the intelligent terminal running background, flash the intelligent terminal
Indicator lamp.
9. screen intensity control system as claimed in claim 6, it is characterised in that
The screen intensity control system also includes recovery module；
The recovery module includes：Low temperature setup unit, low temperature detection unit, low temperature judging unit, low temperature adjustment unit；
The low temperature setup unit, in the intelligent terminal, set a low temperature threshold；
The low temperature detection unit, the temperature sensor of the intelligent terminal is called, detect the Current Temperatures of the intelligent terminal；
The low temperature judging unit, communicated to connect with the low temperature setup unit, low temperature detection unit, the intelligent terminal
Current Temperatures and the low temperature threshold；
The low temperature adjustment unit, communicated to connect with the low temperature judging unit, when the Current Temperatures of the intelligent terminal are less than
During the low temperature threshold, the adjustment module is controlled to recover the driving current of the screen of the intelligent terminal, and then described in recovery
The screen intensity of intelligent terminal.
10. screen intensity control system as claimed in claim 6, it is characterised in that
The screen intensity control system also includes limitation module；
The limitation module includes：Brightness settings unit, brightness detection unit, brightness judging unit, brightness adjusting unit；
The brightness settings unit, in the intelligent terminal, set a luminance threshold；
The brightness detection unit, detect the present intensity of the intelligent terminal；
The brightness judging unit, communicated to connect with the brightness settings unit, brightness detection unit, the intelligent terminal
Present intensity and the luminance threshold；
The brightness adjusting unit, communicated to connect with the brightness judging unit, when the present intensity of the intelligent terminal is less than
During the luminance threshold, the adjustment module is controlled to stop adjusting the driving current of the screen of the intelligent terminal, and then stop
Adjust the screen intensity of the intelligent terminal.
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