技术领域technical field
本发明涉及移动终端技术领域，特别涉及一种用于移动终端的屏幕背光控制装置和移动终端。The invention relates to the technical field of mobile terminals, in particular to a screen backlight control device for a mobile terminal and the mobile terminal.
背景技术Background technique
目前，移动终端得到了较广的普及，移动终端的使用者对移动终端的待机时间也提出了更高的要求，移动终端的显示屏幕的功耗是影响移动终端待机时间的一个重要因素，显示屏幕的功耗主要由两部分组成：LCD显示功耗和背光LED功耗。At present, mobile terminals have been widely popularized, and users of mobile terminals have put forward higher requirements for the standby time of mobile terminals. The power consumption of the display screen of mobile terminals is an important factor affecting the standby time of mobile terminals. The power consumption of the screen is mainly composed of two parts: LCD display power consumption and backlight LED power consumption.
其中，当移动终端的显示屏幕处于睡眠模式时，显示屏幕上通常会显示时间信息以给移动终端的使用者提供方便，这种设计虽然给移动终端的使用者提供了方便，但是会产生大量的功耗，从而导致移动终端的待机时间大大减少，用户体验差。Wherein, when the display screen of the mobile terminal is in sleep mode, time information is usually displayed on the display screen to provide convenience to the user of the mobile terminal. Although this design provides convenience to the user of the mobile terminal, it will generate a large amount of power consumption, thereby greatly reducing the standby time of the mobile terminal and poor user experience.
发明内容Contents of the invention
本发明的目的旨在至少解决上述的技术缺陷之一。The object of the present invention is to solve at least one of the above-mentioned technical drawbacks.
为此，本发明的第一个目的在于提出一种用于移动终端的屏幕背光控制装置，该装置通过在移动终端的屏幕处于不同的工作模式时点亮不同数目的LED灯，大大降低了移动终端屏幕的功耗，从而提高了移动终端的待机时间，提升了用户体验。For this reason, the first object of the present invention is to propose a screen backlight control device for a mobile terminal, which greatly reduces the number of LED lights when the screen of the mobile terminal is in different working modes. The power consumption of the terminal screen improves the standby time of the mobile terminal and improves the user experience.
本发明的第二个目的在于提出一种移动终端。A second object of the present invention is to propose a mobile terminal.
为了实现上述目的，本发明第一方面实施例的用于移动终端的屏幕背光控制装置，包括：第一至第N个串联的LED灯，所述N个串联的LED灯的两端分别为第一接线端和第二接线端，以及在第M个LED灯的阴极处设置第三接线端，其中，所述第二接线端接地，且所述M和N为正整数，M小于N；信号发生模块，所述信号发生模块用于产生脉冲宽度调制PWM信号；第一控制模块，所述第一控制模块分别与所述信号发生模块、所述第一接线端以及所述第二接线端相连，所述第一控制模块用于在所述移动终端的屏幕处于第一工作模式时根据所述PWM信号控制所述第一接线端和所述第二接线端之间的所述N个LED灯开启，且所述第一控制模块在所述移动终端的屏幕处于第二工作模式时，控制所述第一接线端处于高电平；以及第二控制模块，所述第二控制模块与所述信号发生模块和第三接线端相连，所述第二控制模块用于在所述移动终端的屏幕处于所述第二工作模式时根据所述PWM信号控制所述第三接线端接地，以控制所述第一至第M个LED灯开启。In order to achieve the above object, the screen backlight control device for a mobile terminal according to the embodiment of the first aspect of the present invention includes: the first to the Nth series LED lights, and the two ends of the N series series LED lights are respectively the first A connection terminal and a second connection terminal, and a third connection terminal provided at the cathode of the M LED lamp, wherein the second connection terminal is grounded, and the M and N are positive integers, and M is less than N; the signal A generation module, the signal generation module is used to generate a pulse width modulation PWM signal; a first control module, the first control module is connected to the signal generation module, the first connection terminal and the second connection terminal respectively , the first control module is configured to control the N LED lights between the first terminal and the second terminal according to the PWM signal when the screen of the mobile terminal is in the first working mode turn on, and the first control module controls the first terminal to be at a high level when the screen of the mobile terminal is in the second working mode; and the second control module, the second control module and the The signal generating module is connected to the third terminal, and the second control module is used to control the grounding of the third terminal according to the PWM signal when the screen of the mobile terminal is in the second working mode, so as to control the The first to the Mth LED lights are turned on.
本发明实施例的用于移动终端的屏幕背光控制装置，在移动终端的屏幕处于不同的工作模式时控制开启不同数目的LED灯，大大降低了移动终端屏幕的功耗，从而提高了移动终端的待机时间，提升了用户体验。The screen backlight control device for a mobile terminal in the embodiment of the present invention controls to turn on different numbers of LED lights when the screen of the mobile terminal is in different working modes, which greatly reduces the power consumption of the mobile terminal screen, thereby improving the performance of the mobile terminal. Standby time improves user experience.
为了实现上述目的，本发明第二方面实施例的移动终端，包括显示屏、本发明第一方面实施例的用于移动终端的屏幕背光控制装置和显示屏控制器。其中，所述显示屏控制器对所述屏幕背光控制装置和显示屏进行控制，所述显示屏控制器用于通过所述屏幕背光控制装置控制第一区域的LED灯开启时，控制所述显示屏仅在所述第一区域进行显示。In order to achieve the above object, the mobile terminal according to the embodiment of the second aspect of the present invention includes a display screen, the screen backlight control device for a mobile terminal according to the embodiment of the first aspect of the present invention, and a display screen controller. Wherein, the display screen controller controls the screen backlight control device and the display screen, and the display screen controller is used to control the display screen when the LED lights in the first area are turned on by the screen backlight control device. Display only in the first area.
本发明实施例的移动终端，通过在所述屏幕背光控制装置控制第一区域的LED灯开启时，控制所述显示屏仅在所述第一区域进行显示，大大降低了移动终端屏幕的功耗，从而提高了移动终端的待机时间，提升了用户体验。In the mobile terminal of the embodiment of the present invention, when the screen backlight control device controls the LED lights in the first area to turn on, the display screen is controlled to display only in the first area, which greatly reduces the power consumption of the mobile terminal screen , thereby improving the standby time of the mobile terminal and improving user experience.
本发明附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
附图说明Description of drawings
本发明上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:
图1是根据本发明一个实施例的用于移动终端的屏幕背光控制装置的结构示意图；FIG. 1 is a schematic structural diagram of a screen backlight control device for a mobile terminal according to an embodiment of the present invention;
图2是根据本发明一个实施例的用于移动终端的屏幕背光控制装置的电路结构示意图；2 is a schematic diagram of a circuit structure of a screen backlight control device for a mobile terminal according to an embodiment of the present invention;
图3为1颗LED灯提供背光光源时移动终端屏幕显示效果图；Figure 3 is a display effect diagram of the mobile terminal screen when one LED lamp provides a backlight source;
图4为1颗LED灯提供背光光源时移动终端屏幕局部显示效果图；Figure 4 is a partial display effect diagram of the mobile terminal screen when one LED lamp provides a backlight source;
图5为移动终端显示屏上选取的测试点位置示意图。FIG. 5 is a schematic diagram of the locations of test points selected on the display screen of the mobile terminal.
具体实施方式Detailed ways
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能解释为对本发明的限制。Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
下文的公开提供了许多不同的实施例或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或字母。这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施例和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的可应用于性和/或其他材料的使用。另外，以下描述的第一特征在第二特征之“上”的结构可以包括第一和第二特征形成为直接接触的实施例，也可以包括另外的特征形成在第一和第二特征之间的实施例，这样第一和第二特征可能不是直接接触。The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, various specific process and material examples are provided herein, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials. Additionally, configurations described below in which a first feature is "on" a second feature may include embodiments where the first and second features are formed in direct contact, and may include additional features formed between the first and second features. For example, such that the first and second features may not be in direct contact.
在本发明的描述中，需要说明的是，除非另有规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是机械连接或电连接，也可以是两个元件内部的连通，可以是直接相连，也可以通过中间媒介间接相连，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be two The internal communication of each element may be directly connected or indirectly connected through an intermediary. Those skilled in the art can understand the specific meanings of the above terms according to specific situations.
参照下面的描述和附图，将清楚本发明的实施例的这些和其他方面。在这些描述和附图中，具体公开了本发明的实施例中的一些特定实施方式，来表示实施本发明的实施例的原理的一些方式，但是应当理解，本发明的实施例的范围不受此限制。相反，本发明的实施例包括落入所附加权利要求书的精神和内涵范围内的所有变化、修改和等同物。These and other aspects of embodiments of the invention will become apparent with reference to the following description and drawings. In these descriptions and drawings, some specific implementations of the embodiments of the present invention are specifically disclosed to represent some ways of implementing the principles of the embodiments of the present invention, but it should be understood that the scope of the embodiments of the present invention is not limited by this limit. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents coming within the spirit and scope of the appended claims.
当移动终端的屏幕处于睡眠模式时，屏幕上通常会显示时间，这样可以向用户展现当前时间以方便人们的生活。但贴心的设计所带来的问题是：会产生大量的功耗。功耗主要由两部分组成，LCD显示功耗和背光LED功耗。为了解决上述功耗大导致的用户体验差的问题，本发明提出了一种用于移动终端的屏幕背光控制装置和移动终端，下面参考附图描述根据本发明实施例的用于移动终端的屏幕背光控制装置和移动终端。When the screen of the mobile terminal is in sleep mode, the time is usually displayed on the screen, so that the current time can be presented to the user to facilitate people's life. But the problem with thoughtful design is that it will generate a lot of power consumption. Power consumption is mainly composed of two parts, LCD display power consumption and backlight LED power consumption. In order to solve the above problem of poor user experience caused by high power consumption, the present invention proposes a screen backlight control device for a mobile terminal and a mobile terminal. The screen for a mobile terminal according to an embodiment of the present invention will be described below with reference to the accompanying drawings. Backlight control devices and mobile terminals.
图1是根据本发明一个实施例的用于移动终端的屏幕背光控制装置的结构示意图。如图1所示，本发明实施例的用于移动终端的屏幕背光控制装置包括：第一至第N个串联的LED灯、信号发生模块100、第一控制模块200和第二控制模块300。Fig. 1 is a schematic structural diagram of a screen backlight control device for a mobile terminal according to an embodiment of the present invention. As shown in FIG. 1 , the screen backlight control device for a mobile terminal according to an embodiment of the present invention includes: first to Nth LED lights connected in series, a signal generating module 100 , a first control module 200 and a second control module 300 .
N个串联的LED灯的两端分别为第一接线端1000和第二接线端2000，以及在第M个LED灯的阴极处设置第三接线端3000，其中，第二接线端接地，且M和N为正整数，M小于N。The two ends of the N LED lamps in series are the first terminal 1000 and the second terminal 2000 respectively, and the third terminal 3000 is provided at the cathode of the Mth LED lamp, wherein the second terminal is grounded, and M and N are positive integers, and M is smaller than N.
其中，图1中所示的第三接线端3000的位置只是用于举例以方便说明，在此不对第M个LED灯的位置进行限制。Wherein, the position of the third terminal 3000 shown in FIG. 1 is only for example for convenience of description, and the position of the Mth LED lamp is not limited here.
信号发生模块100用于PWM（Pulse Width Modulation，脉冲宽度调制）信号。The signal generating module 100 is used for PWM (Pulse Width Modulation, pulse width modulation) signals.
在本发明的一个实施例中，信号发生模块100用于产生脉冲宽度调制PWM信号以使第一控制模块200和第二控制模块300根据该PWM信号控制LED灯的开启。In one embodiment of the present invention, the signal generating module 100 is used to generate a pulse width modulated PWM signal so that the first control module 200 and the second control module 300 control the LED lights to turn on according to the PWM signal.
第一控制模块200分别与信号发生模块100、第一接线端1000以及第二接线端2000相连，第一控制模块200用于在移动终端的屏幕处于第一工作模式时根据PWM信号控制第一接线端1000和第二接线端2000之间的N个LED灯开启，且第一控制模块200在移动终端的屏幕处于第二工作模式时，控制第一接线端1000处于高电平。The first control module 200 is respectively connected to the signal generating module 100, the first terminal 1000 and the second terminal 2000, and the first control module 200 is used to control the first connection according to the PWM signal when the screen of the mobile terminal is in the first working mode. The N LED lights between the terminal 1000 and the second terminal 2000 are turned on, and the first control module 200 controls the first terminal 1000 to be at a high level when the screen of the mobile terminal is in the second working mode.
在本发明的一个实施例中，如图1所示，在移动终端的屏幕处于第一工作模式时根据PWM信号控制第一接线端1000和第二接线端2000之间的N个LED灯开启。例如，第一工作模式可以是移动终端被正常使用时的模式，开启N个LED灯以确保移动终端的屏幕的显示效果。在移动终端的屏幕处于第二工作模式时，第一控制模块200控制第一接线端1000处于高电平。例如，第二工作模式可以是移动终端屏幕的睡眠模式。In one embodiment of the present invention, as shown in FIG. 1 , when the screen of the mobile terminal is in the first working mode, N LED lights between the first terminal 1000 and the second terminal 2000 are controlled to turn on according to the PWM signal. For example, the first working mode may be a mode when the mobile terminal is used normally, and N LED lights are turned on to ensure the display effect of the screen of the mobile terminal. When the screen of the mobile terminal is in the second working mode, the first control module 200 controls the first terminal 1000 to be at a high level. For example, the second working mode may be a sleep mode of the screen of the mobile terminal.
第二控制模块300与信号发生模块100和第三接线端3000相连，第二控制模块300用于在移动终端的屏幕处于第二工作模式时根据PWM信号控制第三接线端3000接地，以控制第一至第M个LED灯开启。The second control module 300 is connected to the signal generation module 100 and the third terminal 3000, and the second control module 300 is used to control the grounding of the third terminal 3000 according to the PWM signal when the screen of the mobile terminal is in the second working mode, so as to control the third terminal 3000 to ground. The first to Mth LED lights are turned on.
在本发明的一个实施例中，在移动终端的屏幕处于第二工作模式时，第二控制模块300控制第一至第M个LED灯开启，以降低背光LED的功耗。具体地，例如，在移动终端的屏幕处于第二工作模式时，第一控制模块200控制第一接线端1000处于高电平，第二控制模块300控制第三接线端3000接地，那么第一接线端1000和第三接线端3000之间的第一至第M个LED灯根据PWM信号开启。其中，M的大小可以根据实际需要设定。In one embodiment of the present invention, when the screen of the mobile terminal is in the second working mode, the second control module 300 controls the first to Mth LED lights to turn on, so as to reduce the power consumption of the backlight LEDs. Specifically, for example, when the screen of the mobile terminal is in the second working mode, the first control module 200 controls the first terminal 1000 to be at a high level, and the second control module 300 controls the third terminal 3000 to be grounded, then the first connection The first to Mth LED lights between the terminal 1000 and the third terminal 3000 are turned on according to the PWM signal. Wherein, the size of M can be set according to actual needs.
本发明实施例的用于移动终端的屏幕背光控制装置，在移动终端的屏幕处于不同的工作模式时控制开启不同数目的LED灯，大大降低了移动终端屏幕的功耗，从而提高了移动终端的待机时间，提升了用户体验。The screen backlight control device for a mobile terminal in the embodiment of the present invention controls to turn on different numbers of LED lights when the screen of the mobile terminal is in different working modes, which greatly reduces the power consumption of the mobile terminal screen, thereby improving the performance of the mobile terminal. Standby time improves user experience.
图2是根据本发明一个实施例的用于移动终端的屏幕背光控制装置的电路结构示意图。如图2所示，本发明实施例的用于移动终端的屏幕背光控制装置包括：第一至第N个串联的LED灯、信号发生模块100、第一控制模块200和第二控制模块300。Fig. 2 is a schematic diagram of a circuit structure of a screen backlight control device for a mobile terminal according to an embodiment of the present invention. As shown in FIG. 2 , the screen backlight control device for a mobile terminal according to the embodiment of the present invention includes: first to Nth LED lights connected in series, a signal generating module 100 , a first control module 200 and a second control module 300 .
在本发明的一个实施例中，如图2所示，第二控制模块300包括：控制芯片IC1，控制芯片IC1的输出引脚Y接地，控制芯片IC1的使能引脚EN与信号发生模块100电连接，控制芯片IC1的输入引脚A与第三接线端3000电连接，控制芯片IC1用于在移动终端的屏幕处于第二工作模式时根据使能引脚EN输入的PWM信号控制第三接线端3000接地，以控制第一至第M个LED灯开启。In one embodiment of the present invention, as shown in FIG. 2 , the second control module 300 includes: a control chip IC1, the output pin Y of the control chip IC1 is grounded, and the enable pin EN of the control chip IC1 is connected to the signal generation module 100 Electrically connected, the input pin A of the control chip IC1 is electrically connected to the third terminal 3000, and the control chip IC1 is used to control the third terminal according to the PWM signal input from the enable pin EN when the screen of the mobile terminal is in the second working mode. Terminal 3000 is grounded to control the first to Mth LED lights to be turned on.
在本发明的一个实施例中，如图2所示，第一控制模块200包括：电感L，电感L的一端与电源VIN电连接；稳压二极管D，稳压二极管D的阳极端与电感L的另一端电连接，稳压二极管D的阴极端与第一接线端1000电连接；电阻R，电阻R的一端接地，电阻R的另一端与第二接线端2000电连接；驱动芯片IC2，驱动芯片IC2的控制引脚CTRL与信号发生模块100电连接，以输入PWM信号，驱动芯片IC2的输出引脚OUT与第一接线端1000电连接，驱动芯片IC2的感应引脚LX与稳压二极管D的一端电连接，驱动芯片的反馈引脚CS分别与电阻R的另一端、第二接线端2000电连接，其中，驱动芯片IC2在移动终端的屏幕处于第二工作模式时通过感应引脚LX输出高阻抗状态，驱动芯片IC2在移动终端的屏幕处于第一工作模式时根据PWM信号通过输出引脚OUT控制第一接线端1000和第二接线端2000之间的N个LED灯开启。In one embodiment of the present invention, as shown in FIG. 2 , the first control module 200 includes: an inductor L, one end of the inductor L is electrically connected to the power supply VIN; a Zener diode D, and the anode terminal of the Zener diode D is connected to the inductor L The other end of the voltage regulator diode D is electrically connected to the first terminal 1000; the resistor R is electrically connected to one end of the resistor R, and the other end of the resistor R is electrically connected to the second terminal 2000; the driver chip IC2, drives The control pin CTRL of the chip IC2 is electrically connected to the signal generating module 100 to input the PWM signal, the output pin OUT of the driving chip IC2 is electrically connected to the first terminal 1000, and the sensing pin LX of the driving chip IC2 is connected to the Zener diode D One end of the driver chip is electrically connected, and the feedback pin CS of the driver chip is electrically connected to the other end of the resistor R and the second terminal 2000 respectively, wherein the driver chip IC2 outputs through the sensing pin LX when the screen of the mobile terminal is in the second working mode. In the high impedance state, the driver chip IC2 controls the N LED lights between the first terminal 1000 and the second terminal 2000 to turn on according to the PWM signal through the output pin OUT when the screen of the mobile terminal is in the first working mode.
在本发明的一个实施例中，如图2所示，第一控制模块200还包括：In one embodiment of the present invention, as shown in FIG. 2, the first control module 200 further includes:
第一电容C1，第一电容C1的一端与电源VIN电连接，第一电容C1的另一端接地。The first capacitor C1, one end of the first capacitor C1 is electrically connected to the power supply VIN, and the other end of the first capacitor C1 is grounded.
在本发明的一个实施例中，如图2所示，驱动芯片IC2还包括：补偿引脚COMP，用于平稳驱动芯片IC2的电压并使驱动芯片IC2平稳启动。In one embodiment of the present invention, as shown in FIG. 2 , the driving chip IC2 further includes: a compensation pin COMP, which is used to stabilize the voltage of the driving chip IC2 and enable the driving chip IC2 to start up smoothly.
在本发明的一个实施例中，如图2所示，第一控制模块200还包括：第二电容C2，第二电容C2的一端与驱动芯片IC2的补偿引脚COMP电连接，第二电容C2的另一端接地。In one embodiment of the present invention, as shown in FIG. 2 , the first control module 200 further includes: a second capacitor C2, one end of the second capacitor C2 is electrically connected to the compensation pin COMP of the drive chip IC2, and the second capacitor C2 The other end of the ground.
在本发明的一个实施例中，第一控制模块200还包括：第三电容C3，第三电容C3的一端分别与驱动芯片IC2的输出引脚OUT、稳压二极管D的另一端电连接，第三电容C3的另一端接地，用于给输出引脚OUT输出的电压滤波。In one embodiment of the present invention, the first control module 200 further includes: a third capacitor C3, one end of the third capacitor C3 is respectively electrically connected to the output pin OUT of the driver chip IC2 and the other end of the Zener diode D, and the third capacitor C3 The other end of the three-capacitor C3 is grounded for filtering the voltage output from the output pin OUT.
下面详细介绍本发明实施例的用于移动终端的屏幕背光控制装置的工作原理，如图2所示，当在移动终端的屏幕处于第一工作模式时（例如，移动终端被正常使用时），电源VIN通过驱动芯片IC2的电压输入引脚IN/V+将电压输入，驱动芯片IC2将输入电压升压后通过输出引脚OUT输出至第一接线端1000，同时第二接线端2000接地，并且此时控制IC1的输入引脚A为高阻抗状态，即第三接线端3000为高阻抗状态，那么第一接线端1000和第二接线端2000之间的N个LED灯根据PWM信号开启。当在移动终端的屏幕处于第二工作模式时（例如，移动终端的屏幕处于睡眠模式时），驱动芯片IC2的感应引脚LX输出高阻抗状态，电源VIN经过电感L和稳压稳压二极管D的稳压作用后与第一接线端1000相连，第一接线端1000处于高电平，同时，控制芯片IC1导通，控制芯片IC1的输入引脚A与输出引脚Y导通，并通过输出引脚Y接地，那么第一接线端1000和第三接线端3000之间的第一至第M个LED灯根据PWM信号开启。The working principle of the screen backlight control device for a mobile terminal in an embodiment of the present invention will be described in detail below. As shown in FIG. 2, when the screen of the mobile terminal is in the first working mode (for example, when the mobile terminal is in normal use), The power supply VIN inputs the voltage through the voltage input pin IN/V+ of the driver chip IC2, and the driver chip IC2 boosts the input voltage and outputs it to the first terminal 1000 through the output pin OUT, while the second terminal 2000 is grounded, and this When the input pin A of the control IC1 is in a high impedance state, that is, the third terminal 3000 is in a high impedance state, then the N LED lights between the first terminal 1000 and the second terminal 2000 are turned on according to the PWM signal. When the screen of the mobile terminal is in the second working mode (for example, when the screen of the mobile terminal is in sleep mode), the sensing pin LX of the driver chip IC2 outputs a high impedance state, and the power supply VIN passes through the inductor L and the voltage regulator diode D After the voltage stabilization function, it is connected to the first terminal 1000, and the first terminal 1000 is at a high level. At the same time, the control chip IC1 is turned on, and the input pin A of the control chip IC1 and the output pin Y are turned on, and through the output If the pin Y is grounded, then the first to Mth LED lights between the first terminal 1000 and the third terminal 3000 are turned on according to the PWM signal.
在本发明的一个实施例中，如果M=1，即在移动终端的屏幕处于第二工作模式时控制一个LED灯开启，其中，假设LED灯正常工作电压为3V,移动终端的屏幕处于第二工作模式时的工作电流为15mA，则本发明实施例的功耗为：P′=3×15=45（mW），而现有技术中的功耗为：P=N×3×15=45N（mW），那么，本发明实施例的功耗降低了N-1/N，从而延长了移动终端的待机时间。In one embodiment of the present invention, if M=1, that is, when the screen of the mobile terminal is in the second working mode, an LED light is controlled to turn on, wherein, assuming that the normal working voltage of the LED light is 3V, the screen of the mobile terminal is in the second working mode. The working current in the working mode is 15mA, so the power consumption of the embodiment of the present invention is: P′=3×15=45 (mW), while the power consumption in the prior art is: P=N×3×15=45N (mW), then, the power consumption of the embodiment of the present invention is reduced by N-1/N, thereby prolonging the standby time of the mobile terminal.
本发明实施例的用于移动终端的屏幕背光控制装置，通过在移动终端的屏幕处于第一工作模式时控制全部LED灯开启，以及在移动终端的屏幕处于第二工作模式时控制第一至第M个LED灯开启，大大降低了移动终端屏幕的功耗，从而提高了移动终端的待机时间，提升了用户体验。The screen backlight control device for a mobile terminal in the embodiment of the present invention controls all LED lights to be turned on when the screen of the mobile terminal is in the first working mode, and controls the first to second LED lights when the screen of the mobile terminal is in the second working mode. Turning on the M LED lights greatly reduces the power consumption of the screen of the mobile terminal, thereby increasing the standby time of the mobile terminal and improving user experience.
为了实现上述实施例，本发明还提出一种移动终端。该移动终端包括显示屏、上述实施例的用于移动终端的屏幕背光控制装置和显示屏控制器。In order to realize the above embodiments, the present invention also proposes a mobile terminal. The mobile terminal includes a display screen, the screen backlight control device for a mobile terminal in the above embodiment, and a display screen controller.
其中，显示屏控制器对屏幕背光控制装置和显示屏进行控制，显示屏控制器用于通过屏幕背光控制装置控制第一区域的LED灯开启时，控制显示屏仅在第一区域进行显示。Wherein, the display screen controller controls the screen backlight control device and the display screen, and the display screen controller is used to control the display screen to only display in the first area when the LED lights in the first area are turned on through the screen backlight control device.
具体地，以N=8，M=1，即移动终端的屏幕处于第二工作模式时开启一个LED灯为例，且若该开启的LED灯分布的位置对应于移动终端显示屏的第一区域（例如，显示屏的中间位置）时，那么由原来的8颗LED灯提供背光光源改为1颗LED灯提供背光光源将会带来移动终端的显示屏显示亮度不均的问题，效果如图3所示，中间部位亮度较高，两个角落比较暗，显示效果比较差。为了解决此问题，可以在LCD显示屏的显示区域上进行处理。当屏幕背光控制装置控制第一区域（例如，显示屏的中间位置）的LED灯开启时，显示屏控制器控制移动终端的显示屏仅在第一区域进行显示，即进行局部显示，局部显示的效果图如图4所示，可以看出，中间1/3的显示屏显示画面比较均匀。上述第一区域为显示屏的中间位置只是用来举例，在此不对第一区域的位置进行限制。Specifically, take N=8, M=1, that is, turn on an LED light when the screen of the mobile terminal is in the second working mode as an example, and if the position of the turned-on LED light distribution corresponds to the first area of the display screen of the mobile terminal (For example, the middle position of the display screen), then changing from the original 8 LED lights to provide the backlight source to 1 LED light source to provide the backlight light source will cause the problem of uneven display brightness on the display screen of the mobile terminal, as shown in the figure As shown in 3, the brightness of the middle part is higher, and the two corners are darker, and the display effect is relatively poor. To solve this problem, processing can be performed on the display area of the LCD display. When the screen backlight control device controls the LED lights in the first area (for example, the middle position of the display screen) to turn on, the display screen controller controls the display screen of the mobile terminal to display only in the first area, that is, to perform partial display, and the partial display The effect diagram is shown in Figure 4. It can be seen that the display screen in the middle 1/3 is relatively uniform. The above-mentioned first area being the middle position of the display screen is only used as an example, and the position of the first area is not limited here.
另外，为了使显示效果更加能够让使用者接受，在本发明的一个实施例中，显示屏控制器控制显示屏仅在第一区域进行显示时，还根据预设显示格式控制显示屏进行显示。其中，预设显示格式可以为显示内容的字体、颜色、位置等。例如，显示屏的第一区域中显示的字体可以采用空心字体显示，让使用者在视觉上感觉显示的亮度效果更加均匀。In addition, in order to make the display effect more acceptable to users, in one embodiment of the present invention, when the display screen controller controls the display screen to display only in the first area, it also controls the display screen to display according to a preset display format. Wherein, the preset display format may be the font, color, position, etc. of the displayed content. For example, the fonts displayed in the first area of the display screen can be displayed in hollow fonts, so that the user can visually feel that the displayed brightness effect is more uniform.
本发明实施例的移动终端，通过在所述屏幕背光控制装置控制第一区域的LED灯开启时，控制所述显示屏仅在所述第一区域进行显示，大大降低了移动终端屏幕的功耗，从而提高了移动终端的待机时间，提升了用户体验。In the mobile terminal of the embodiment of the present invention, when the screen backlight control device controls the LED lights in the first area to turn on, the display screen is controlled to display only in the first area, which greatly reduces the power consumption of the mobile terminal screen , thereby improving the standby time of the mobile terminal and improving user experience.
下面对移动终端的显示屏亮度的测试结果进行介绍，以N=8，M=1，且移动终端的屏幕处于第二工作模式时开启的一个LED灯位于移动终端显示屏的中间位置为例。The following is an introduction to the test results of the display brightness of the mobile terminal, taking N=8, M=1, and an LED light turned on when the screen of the mobile terminal is in the second working mode is located in the middle of the display screen of the mobile terminal as an example .
图5所示为移动终端显示屏上选取的测试点位置示意图，如图5所示，测试点分别为：（1）、（2）、（3）、（4）、（5）。Figure 5 is a schematic diagram of the locations of test points selected on the display screen of the mobile terminal. As shown in Figure 5, the test points are: (1), (2), (3), (4), and (5).
表1为8颗LED灯全部点亮状态时在不同电流输入条件下，显示屏上5个测试点的亮度值。Table 1 shows the brightness values of 5 test points on the display screen under different current input conditions when all 8 LED lights are on.
表1Table 1
表2为1颗LED灯点亮状态时不同输入电流条件下5个测试点的亮度值。Table 2 shows the brightness values of five test points under different input current conditions when one LED light is on.
表2Table 2
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现特定逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本发明的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本发明的实施例所属技术领域的技术人员所理解。Any process or method descriptions described in flowcharts or otherwise herein may be understood as representing a module, segment or portion of code comprising one or more executable instructions for implementing specific logical functions or steps of the process , and the scope of preferred embodiments of the invention includes alternative implementations in which functions may be performed out of the order shown or discussed, including in substantially simultaneous fashion or in reverse order depending on the functions involved, which shall It is understood by those skilled in the art to which the embodiments of the present invention pertain.
在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行系统、装置或设备（如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统）使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言，"计算机可读介质"可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。计算机可读介质的更具体的示例（非穷尽性列表）包括以下：具有一个或多个布线的电连接部（电子装置），便携式计算机盘盒（磁装置），随机存取存储器（RAM），只读存储器（ROM），可擦除可编辑只读存储器（EPROM或闪速存储器），光纤装置，以及便携式光盘只读存储器（CDROM）。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。The logic and/or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium, For use with an instruction execution system, device, or device (such as a computer-based system, a system including a processor, or other systems that can fetch instructions from an instruction execution system, device, or device and execute instructions), or in conjunction with such an instruction execution system, device or equipment used. For the purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use in or in conjunction with an instruction execution system, device or device. More specific examples (non-exhaustive list) of computer-readable media include the following: electrical connection with one or more wires (electronic device), portable computer disk case (magnetic device), random access memory (RAM), Read Only Memory (ROM), Erasable and Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program can be printed, since the program can be read, for example, by optically scanning the paper or other medium, followed by editing, interpretation or other suitable processing if necessary. The program is processed electronically and stored in computer memory.
应当理解，本发明的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。例如，如果用硬件来实现，和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列（PGA），现场可编程门阵列（FPGA）等。It should be understood that various parts of the present invention can be realized by hardware, software, firmware or their combination. In the embodiments described above, various steps or methods may be implemented by software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques known in the art: Discrete logic circuits, ASICs with suitable combinational logic gates, Programmable Gate Arrays (PGAs), Field Programmable Gate Arrays (FPGAs), etc.
本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。Those of ordinary skill in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. During execution, one or a combination of the steps of the method embodiments is included.
此外，在本发明各个实施例中的各功能单元可以集成在一个处理模块中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。In addition, each functional unit in each embodiment of the present invention may be integrated into one processing module, each unit may exist separately physically, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium.
上述提到的存储介质可以是只读存储器，磁盘或光盘等。The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, and the like.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659654.0ACN104702799A (en) | 2013-12-06 | 2013-12-06 | Screen backlight control device for mobile terminal and mobile terminal |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659654.0ACN104702799A (en) | 2013-12-06 | 2013-12-06 | Screen backlight control device for mobile terminal and mobile terminal |
| Publication Number | Publication Date |
|---|---|
| CN104702799Atrue CN104702799A (en) | 2015-06-10 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310659654.0APendingCN104702799A (en) | 2013-12-06 | 2013-12-06 | Screen backlight control device for mobile terminal and mobile terminal |
| Country | Link |
|---|---|
| CN (1) | CN104702799A (en) |
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| JP2002006316A (en)* | 2000-06-23 | 2002-01-09 | Hitachi Ltd | Image display device |
| CN101048810A (en)* | 2004-10-26 | 2007-10-03 | 索尼爱立信移动通讯股份有限公司 | Backlight unit for display device |
| CN101256746A (en)* | 2007-07-11 | 2008-09-03 | 康佳集团股份有限公司 | Method for controlling mobile telephone LCD screen backlight |
| CN1988743B (en)* | 2005-12-22 | 2010-09-01 | 乐金显示有限公司 | Device for driving light emitting diode |
| CN101977271A (en)* | 2010-10-19 | 2011-02-16 | 惠州Tcl移动通信有限公司 | Method for reducing consumption of mobile phone battery and mobile phone thereof |
| US20120050343A1 (en)* | 2010-08-31 | 2012-03-01 | Samsung Electronics Co., Ltd. | Display apparatus and driving apparatus for driving backlight thereof |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002006316A (en)* | 2000-06-23 | 2002-01-09 | Hitachi Ltd | Image display device |
| CN101048810A (en)* | 2004-10-26 | 2007-10-03 | 索尼爱立信移动通讯股份有限公司 | Backlight unit for display device |
| CN1988743B (en)* | 2005-12-22 | 2010-09-01 | 乐金显示有限公司 | Device for driving light emitting diode |
| CN101256746A (en)* | 2007-07-11 | 2008-09-03 | 康佳集团股份有限公司 | Method for controlling mobile telephone LCD screen backlight |
| US20120050343A1 (en)* | 2010-08-31 | 2012-03-01 | Samsung Electronics Co., Ltd. | Display apparatus and driving apparatus for driving backlight thereof |
| CN101977271A (en)* | 2010-10-19 | 2011-02-16 | 惠州Tcl移动通信有限公司 | Method for reducing consumption of mobile phone battery and mobile phone thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right | Owner name:SHENZHEN BYD ELECTRONIC COMPONENT CO., LTD. Free format text:FORMER OWNER: BIYADI CO., LTD. Effective date:20150831 | |
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right | Effective date of registration:20150831 Address after:518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Applicant after:Shenzhen BYD Electronic Component Co., Ltd. Address before:BYD 518118 Shenzhen Road, Guangdong province Pingshan New District No. 3009 Applicant before:Biyadi Co., Ltd. | |
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20150610 |