CN104702799A - Screen backlight control device for mobile terminal and mobile terminal - Google Patents
Screen backlight control device for mobile terminal and mobile terminal Download PDFInfo
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- CN104702799A CN104702799A CN201310659654.0A CN201310659654A CN104702799A CN 104702799 A CN104702799 A CN 104702799A CN 201310659654 A CN201310659654 A CN 201310659654A CN 104702799 A CN104702799 A CN 104702799A
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Abstract
The invention provides a screen backlight control device for a mobile terminal and the mobile terminal. The device comprises first to Nth LED (Light-Emitting Diode) lamps which are connected in series, wherein the two ends of the LED lamps are first terminals and second terminals respectively; the cathode of the Mth LED lamp is provided with a third terminal; the second terminal is grounded; M and N are positive integers; M is smaller than N; a signal generating module is used for generating a pulse width modulation (PWM) signal; a first control module is used for controlling the N LED lamps between the first terminal and the second terminal to be turned on according to the PWM signal when a screen of the mobile terminal is in a first working mode, and controlling the first terminal to keep at a high level when the screen of the mobile terminal is in a second working mode; and a second control module is used for controlling the third terminal to be grounded according to the PWM signal when the screen of the mobile terminal is in the second working mode in order to control the Mth LED lamp to be turned on. Through adoption of the device in the embodiment of the invention, the power consumption of the mobile terminal is lowered, and the user experience is improved.
Description
Technical field
The present invention relates to technical field of mobile terminals, particularly a kind of screen backlight control device for mobile terminal and mobile terminal.
Background technology
At present, mobile terminal obtains wider popularizing, the stand-by time of user to mobile terminal of mobile terminal it is also proposed higher requirement, the power consumption of the display screen of mobile terminal is the key factor affecting the mobile terminal standby time, and the power consumption of display screen forms primarily of two parts: LCD shows power consumption and backlight LED power consumption.
Wherein, when the display screen of mobile terminal is in sleep pattern; display screen can displaying time information be provided convenience to give the user of mobile terminal usually; although this design provides conveniently to the user of mobile terminal; but a large amount of power consumptions can be produced; thus cause the stand-by time of mobile terminal to greatly reduce, poor user experience.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency.
For this reason, first object of the present invention is to propose a kind of screen backlight control device for mobile terminal, this device is by lighting the LED of different number when the screen of mobile terminal is in different mode of operations, greatly reduce the power consumption of mobile terminal screen, thus improve the stand-by time of mobile terminal, improve Consumer's Experience.
Second object of the present invention is to propose a kind of mobile terminal.
To achieve these goals, the screen backlight control device for mobile terminal of first aspect present invention embodiment, comprise: first to the LED of N number of series connection, the two ends of the LED of described N number of series connection are respectively the first terminals and the second terminals, and the 3rd terminals are set at the negative electrode place of M LED, and wherein, described second terminals ground connection, and described M and N is positive integer, M is less than N; Signal generating module, described signal generating module is for generation of pulse width modulation (PWM) signal; First control module, described first control module is connected with described signal generating module, described first terminals and described second terminals respectively, described N number of LED that described first control module is used for controlling between described first terminals and described second terminals according to described pwm signal when the screen of described mobile terminal is in the first mode of operation is opened, and described first control module is when the screen of described mobile terminal is in the second mode of operation, controls described first terminals and be in high level; And second control module, described second control module is connected with the 3rd terminals with described signal generating module, described second control module is used for controlling described 3rd terminals ground connection when the screen of described mobile terminal is in described second mode of operation according to described pwm signal, opens to control described first to M LED.
The screen backlight control device for mobile terminal of the embodiment of the present invention, the LED of opening different number is controlled when the screen of mobile terminal is in different mode of operations, greatly reduce the power consumption of mobile terminal screen, thus improve the stand-by time of mobile terminal, improve Consumer's Experience.
To achieve these goals, the mobile terminal of second aspect present invention embodiment, comprises display screen, the screen backlight control device for mobile terminal of first aspect present invention embodiment and displaying screen controller.Wherein, described displaying screen controller controls described screen backlight control device and display screen, when described displaying screen controller is used for the LED unlatching being controlled first area by described screen backlight control device, controls described display screen and only show in described first area.
The mobile terminal of the embodiment of the present invention, when being opened by the LED controlling first area at described screen backlight control device, control described display screen only to show in described first area, greatly reduce the power consumption of mobile terminal screen, thus improve the stand-by time of mobile terminal, improve Consumer's Experience.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is according to an embodiment of the invention for the structural representation of the screen backlight control device of mobile terminal;
Fig. 2 is according to an embodiment of the invention for the electrical block diagram of the screen backlight control device of mobile terminal;
Fig. 3 moves terminal screen display effect figure for 1 LED lamp provides during back light;
Fig. 4 is mobile terminal screen local display design sketch when 1 LED lamp provides back light;
Fig. 5 is the test point position view that mobile terminal display screen is chosen.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
With reference to description below and accompanying drawing, these and other aspects of embodiments of the invention will be known.Describe at these and in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, representing some modes of the principle implementing embodiments of the invention, but should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
When the screen of mobile terminal is in sleep pattern, on screen, usual meeting displaying time, can represent current time with the life be convenient for people to user like this.But the problem that intimate design brings is: can produce a large amount of power consumptions.Power consumption forms primarily of two parts, and LCD shows power consumption and backlight LED power consumption.In order to solve the problem of the poor user experience that above-mentioned power consumption causes greatly, the present invention proposes a kind of screen backlight control device for mobile terminal and mobile terminal, below with reference to the accompanying drawings describe the screen backlight control device for mobile terminal according to the embodiment of the present invention and mobile terminal.
Fig. 1 is according to an embodiment of the invention for the structural representation of the screen backlight control device of mobile terminal.As shown in Figure 1, the screen backlight control device for mobile terminal of the embodiment of the present invention comprises: first to the LED of N number of series connection, signal generating module 100, first control module 200 and the second control module 300.
The two ends of the LED of N number of series connection are respectively the first terminals 1000 and the second terminals 2000, and arrange the 3rd terminals 3000 at the negative electrode place of M LED, wherein, and the second terminals ground connection, and M and N is positive integer, M is less than N.
Wherein, the position of the 3rd terminals 3000 shown in Fig. 1, just for illustrating to facilitate explanation, does not limit the position of M LED at this.
Signal generating module 100 for PWM(Pulse Width Modulation, pulse width modulation) signal.
In one embodiment of the invention, signal generating module 100 controls the unlatching of LED to make the first control module 200 and the second control module 300 according to this pwm signal for generation of pulse width modulation (PWM) signal.
First control module 200 is connected with signal generating module 100, first terminals 1000 and the second terminals 2000 respectively, first control module 200 is opened for the N number of LED controlled according to pwm signal when the screen of mobile terminal is in the first mode of operation between the first terminals 1000 and the second terminals 2000, and the first control module 200 is when the screen of mobile terminal is in the second mode of operation, controls the first terminals 1000 and be in high level.
In one embodiment of the invention, as shown in Figure 1, the N number of LED controlled according to pwm signal when the screen of mobile terminal is in the first mode of operation between the first terminals 1000 and the second terminals 2000 is opened.Such as, the first mode of operation can be the pattern of mobile terminal when normally being used, and opens N number of LED to guarantee the display effect of the screen of mobile terminal.When the screen of mobile terminal is in the second mode of operation, the first control module 200 controls the first terminals 1000 and is in high level.Such as, the second mode of operation can be the sleep pattern of mobile terminal screen.
Second control module 300 is connected with the 3rd terminals 3000 with signal generating module 100, second control module 300, for controlling the 3rd terminals 3000 ground connection when the screen of mobile terminal is in the second mode of operation according to pwm signal, is opened to control first to M LED.
In one embodiment of the invention, when the screen of mobile terminal is in the second mode of operation, the second control module 300 controls first to M LED and opens, to reduce the power consumption of backlight LED.Particularly, such as, when the screen of mobile terminal is in the second mode of operation, first control module 200 controls the first terminals 1000 and is in high level, second control module 300 controls the 3rd terminals 3000 ground connection, and first to M LED so between the first terminals 1000 and the 3rd terminals 3000 is opened according to pwm signal.Wherein, the size of M can set according to actual needs.
The screen backlight control device for mobile terminal of the embodiment of the present invention, the LED of opening different number is controlled when the screen of mobile terminal is in different mode of operations, greatly reduce the power consumption of mobile terminal screen, thus improve the stand-by time of mobile terminal, improve Consumer's Experience.
Fig. 2 is according to an embodiment of the invention for the electrical block diagram of the screen backlight control device of mobile terminal.As shown in Figure 2, the screen backlight control device for mobile terminal of the embodiment of the present invention comprises: first to the LED of N number of series connection, signal generating module 100, first control module 200 and the second control module 300.
In one embodiment of the invention, as shown in Figure 2, second control module 300 comprises: control chip IC1, the output pin Y ground connection of control chip IC1, the enable pin EN of control chip IC1 is electrically connected with signal generating module 100, the input pin A of control chip IC1 is electrically connected with the 3rd terminals 3000, control chip IC1 is used for controlling the 3rd terminals 3000 ground connection when the screen of mobile terminal is in the second mode of operation according to the pwm signal of enable pin EN input, opens to control first to M LED.
In one embodiment of the invention, as shown in Figure 2, the first control module 200 comprises: inductance L, and one end of inductance L is electrically connected with power supply VIN, voltage stabilizing didoe D, the anode tap of voltage stabilizing didoe D is electrically connected with the other end of inductance L, and the cathode terminal of voltage stabilizing didoe D is electrically connected with the first terminals 1000, one end ground connection of resistance R, resistance R, the other end of resistance R is electrically connected with the second terminals 2000, driving chip IC2, the control pin CTRL of driving chip IC2 is electrically connected with signal generating module 100, to input pwm signal, the output pin OUT of driving chip IC2 is electrically connected with the first terminals 1000, the induction pin LX of driving chip IC2 is electrically connected with one end of voltage stabilizing didoe D, the feedback pin CS of driving chip respectively with the other end of resistance R, second terminals 2000 are electrically connected, wherein, driving chip IC2 passes through induction pin LX output high impedance state when the screen of mobile terminal is in the second mode of operation, N number of LED that driving chip IC2 is controlled between the first terminals 1000 and the second terminals 2000 by output pin OUT according to pwm signal when the screen of mobile terminal is in the first mode of operation is opened.
In one embodiment of the invention, as shown in Figure 2, the first control module 200 also comprises:
First electric capacity C1, one end of the first electric capacity C1 is electrically connected with power supply VIN, the other end ground connection of the first electric capacity C1.
In one embodiment of the invention, as shown in Figure 2, driving chip IC2 also comprises: compensation pin COMP, for smooth drive chip IC 2 voltage and make driving chip IC2 smooth starting.
In one embodiment of the invention, as shown in Figure 2, the first control module 200 also comprises: the second electric capacity C2, and one end of the second electric capacity C2 is electrically connected with the compensation pin COMP of driving chip IC2, the other end ground connection of the second electric capacity C2.
In one embodiment of the invention, first control module 200 also comprises: the 3rd electric capacity C3, one end of 3rd electric capacity C3 is electrically connected with the output pin OUT of driving chip IC2, the other end of voltage stabilizing didoe D respectively, the other end ground connection of the 3rd electric capacity C3, for the voltage filter exporting to output pin OUT.
Introduce the operation principle of the screen backlight control device for mobile terminal of the embodiment of the present invention below in detail, as shown in Figure 2, when when the screen of mobile terminal is in the first mode of operation (such as, when mobile terminal is normally used), voltage is inputted by the voltage input pin IN/V+ of driving chip IC2 by power supply VIN, driving chip IC2 exports the first terminals 1000 to by output pin OUT after being boosted by input voltage, second terminals 2000 ground connection simultaneously, and now the input pin A of control IC1 is high impedance status, namely the 3rd terminals 3000 are high impedance status, N number of LED so between the first terminals 1000 and the second terminals 2000 is opened according to pwm signal.When when the screen of mobile terminal is in the second mode of operation (such as, when the screen of mobile terminal is in sleep pattern), the induction pin LX output high impedance state of driving chip IC2, power supply VIN is connected with the first terminals 1000 after the pressure stabilization function of voltage stabilizing voltage stabilizing didoe D through inductance L, first terminals 1000 are in high level, simultaneously, control chip IC1 conducting, the input pin A of control chip IC1 and output pin Y conducting, and by output pin Y ground connection, first to M LED so between the first terminals 1000 and the 3rd terminals 3000 is opened according to pwm signal.
In one embodiment of the invention, if M=1, namely control a LED to open when the screen of mobile terminal is in the second mode of operation, wherein, suppose that LED normal working voltage is 3V, the operating current when screen of mobile terminal is in the second mode of operation is 15mA, then the power consumption of the embodiment of the present invention is: P '=3 × 15=45(mW), and power consumption of the prior art is: P=N × 3 × 15=45N(mW), so, the lower power consumption of embodiment of the present invention N-1/N, thus extend the stand-by time of mobile terminal.
The screen backlight control device for mobile terminal of the embodiment of the present invention, open by controlling whole LED when the screen of mobile terminal is in the first mode of operation, and first to M LED unlatching is controlled when the screen of mobile terminal is in the second mode of operation, greatly reduce the power consumption of mobile terminal screen, thus improve the stand-by time of mobile terminal, improve Consumer's Experience.
In order to realize above-described embodiment, the present invention also proposes a kind of mobile terminal.This mobile terminal comprises display screen, the screen backlight control device for mobile terminal of above-described embodiment and displaying screen controller.
Wherein, displaying screen controller controls screen backlight control device and display screen, when displaying screen controller is used for the LED unlatching being controlled first area by screen backlight control device, controls display screen and only shows in first area.
Particularly, with N=8, M=1, namely opening a LED when screen of mobile terminal is in the second mode of operation is example, if and the position of the LED of this unlatching distribution corresponds to the first area of mobile terminal display screen (such as, the centre position of display screen) time, so back light is provided to change the problem of the display screen display brightness inequality that 1 LED lamp provides back light will bring mobile terminal into by 8 original LED lamp, effect as shown in Figure 3, middle part brightness is higher, two corners are relatively darker, and display effect is poor.In order to head it off, can at the enterprising row relax in the viewing area of LCD display.When screen backlight control device controls first area (such as, the centre position of display screen) LED open time, the display screen that displaying screen controller controls mobile terminal only shows in first area, namely local display is carried out, the design sketch of local display as shown in Figure 4, can find out, the display screen display frame of middle 1/3 is more even.Above-mentioned first area is that the centre position of display screen is only used to citing, does not limit at this to the position of first area.
In addition, in order to make display effect that user more can be allowed to accept, in one embodiment of the invention, displaying screen controller controls display screen only when first area shows, and also shows according to presetting display format control display screen.Wherein, default display format can be the font, color, position etc. of displaying contents.Such as, the font shown in the first area of display screen can adopt open letters to show, and the brightness effects shown is more even to allow user visually feel.
The mobile terminal of the embodiment of the present invention, when being opened by the LED controlling first area at described screen backlight control device, control described display screen only to show in described first area, greatly reduce the power consumption of mobile terminal screen, thus improve the stand-by time of mobile terminal, improve Consumer's Experience.
Be introduced the test result of the brightness of display screen of mobile terminal below, with N=8, M=1, and the centre position that a LED of opening when the screen of mobile terminal is in the second mode of operation is positioned at mobile terminal display screen is example.
Figure 5 shows that the test point position view that mobile terminal display screen is chosen, as shown in Figure 5, test point is respectively: (1), (2), (3), (4), (5).
When table 1 is 8 LED lamp whole illuminating state under different electric current initial conditions, the brightness value of 5 test points on display screen.
Table 1
The brightness value of different input current conditions lower 5 test points when table 2 is 1 LED lamp illuminating state.
Table 2
Describe and can be understood in flow chart or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of processor or other can from instruction execution system, device or equipment instruction fetch and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this specification, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wiring, portable computer diskette box (magnetic device), random-access memory (ram), read-only memory (ROM), erasablely edit read-only memory (EPROM or flash memory), fiber device, and portable optic disk read-only memory (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanner to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the application-specific integrated circuit (ASIC) of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.
Claims (10)
1., for a screen backlight control device for mobile terminal, it is characterized in that, comprising:
First to the LED of N number of series connection, and the two ends of the LED of described N number of series connection are respectively the first terminals and the second terminals, and arrange the 3rd terminals at the negative electrode place of M LED, wherein, described second terminals ground connection, and described M and N is positive integer, M is less than N;
Signal generating module, described signal generating module is for generation of pulse width modulation (PWM) signal;
First control module, described first control module is connected with described signal generating module, described first terminals and described second terminals respectively, described N number of LED that described first control module is used for controlling between described first terminals and described second terminals according to described pwm signal when the screen of described mobile terminal is in the first mode of operation is opened, and described first control module is when the screen of described mobile terminal is in the second mode of operation, controls described first terminals and be in high level; And
Second control module, described second control module is connected with the 3rd terminals with described signal generating module, described second control module is used for controlling described 3rd terminals ground connection when the screen of described mobile terminal is in described second mode of operation according to described pwm signal, opens to control described first to M LED.
2. device according to claim 1, is characterized in that, described second control module comprises: "
Control chip, the output pin ground connection of described control chip, the enable pin of described control chip is electrically connected with described signal generating module, the input pin of described control chip is electrically connected with described 3rd terminals, the described pwm signal that described control chip is used for inputting according to described enable pin when the screen of described mobile terminal is in described second mode of operation controls described 3rd terminals ground connection, opens to control described first to M LED.
3. device according to claim 1, is characterized in that, described first control module comprises:
Inductance, one end of described inductance is connected with power electric;
Voltage stabilizing didoe, the anode tap of described voltage stabilizing didoe is electrically connected with the other end of described inductance, and the cathode terminal of described voltage stabilizing didoe is electrically connected with described first terminals;
Resistance, one end ground connection of described resistance, the other end of described resistance is electrically connected with described second terminals;
Driving chip, the control pin of described driving chip is electrically connected with described signal generating module, to input described pwm signal, the output pin of described driving chip is electrically connected with described first terminals, the induction pin of described driving chip is electrically connected with one end of described voltage stabilizing didoe, the feedback pin of described driving chip respectively with the other end of described resistance, described second terminals electrical connection, wherein, described driving chip when the screen of described mobile terminal is in the second mode of operation by described induction pin output high impedance state, described N number of LED that described driving chip is controlled between described first terminals and described second terminals by described output pin according to described pwm signal when the screen of described mobile terminal is in the first mode of operation is opened.
4. device according to claim 3, is characterized in that, described first control module also comprises:
First electric capacity, one end of described first electric capacity is connected with described power electric, the other end ground connection of described first electric capacity.
5. device according to claim 3, is characterized in that, described driving chip also comprises:
Compensation pin, for steady described driving chip voltage and make described driving chip smooth starting.
6. device according to claim 5, is characterized in that, described first control module also comprises:
Second electric capacity, one end of described second electric capacity is electrically connected with the compensation pin of described driving chip, the other end ground connection of described second electric capacity.
7. device according to claim 6, is characterized in that, described first control module also comprises:
3rd electric capacity, one end of described 3rd electric capacity is electrically connected with the output pin of described driving chip, the other end of described voltage stabilizing didoe respectively, the other end ground connection of described 3rd electric capacity, for the voltage filter exporting to described output pin.
8. a mobile terminal, is characterized in that, comprising:
Display screen;
The screen backlight control device for mobile terminal as described in any one of claim 1-7;
Displaying screen controller, described displaying screen controller controls described screen backlight control device and display screen, when described displaying screen controller is used for the LED unlatching being controlled first area by described screen backlight control device, controls described display screen and only show in described first area.
9. mobile terminal according to claim 8, is characterized in that, described displaying screen controller controls described display screen only when described first area shows, and also controls described display screen according to default display format and shows.
10. mobile terminal according to claim 9, is characterized in that, described first area is the zone line of described display screen.
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| CN201310659654.0A CN104702799A (en) | 2013-12-06 | 2013-12-06 | Screen backlight control device for mobile terminal and mobile terminal |
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| CN201310659654.0A CN104702799A (en) | 2013-12-06 | 2013-12-06 | Screen backlight control device for mobile terminal and mobile terminal |
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