CN110402461B - 显示屏控制方法及终端 - Google Patents
显示屏控制方法及终端 Download PDFInfo
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- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
本申请提供了一种显示屏控制方法及终端。监测终端是否满足低功耗运行条件,其中,所述终端的显示屏为有机发光显示屏,所述有机发光显示屏的每个像素单元至少包括一个红色子像素、一个蓝色子像素和一个绿色子像素。监测到所述终端满足所述低功耗运行条件,降低红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率。通过降低任意一个或任意两个驱动信号的频率,可以降低显示驱动芯片的功能,因此,能够节省功耗。
Description
本申请要求于2017年4月6日提交中国专利局、申请号为201710222055.0、发明名称为“一种AMOLED显示屏的驱动电路”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及控制领域,尤其涉及显示屏控制方法及终端。
背景技术
有源矩阵有机发光二极管(active-matrix organic light emitting diode,AMOLED)是终端的显示屏常用的元器件。AMOLED构成显示屏幕的子像素,例如红光AMOLED为红色子像素,绿光AMOLED为绿色子像素,蓝光AMOLED为蓝色子像素,显示屏上的像素发出的光由红色子像素、绿色子像素和蓝色子像素被点亮后发出的光(即红光、绿光和蓝光)合成。为了降低功耗,提高终端的续航能力,目前,大多数终端在待机模式下会关闭部分AMOLED,即只点亮部分子像素。
然而,研究表明,即使在待机模式下只点亮部分子像素,用于驱动点亮子像素的显示驱动芯片仍是终端最大的功耗来源。
因此,如何降低显示驱动芯片的功耗,成为目前亟待解决的问题。
发明内容
本申请提供了一种显示屏控制方法及终端,目的在于解决如何降低显示驱动芯片的功耗的问题。
为了实现上述目的,本申请提供了以下技术方案:
本申请的第一方面提供了一种显示屏控制方法,包括:监测终端是否满足低功耗运行条件,其中,所述终端的显示屏为有机发光显示屏,所述有机发光显示屏的每个像素单元至少包括一个红色子像素、一个蓝色子像素和一个绿色子像素。监测到所述终端满足所述低功耗运行条件,降低红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率。通过降低任意一个或任意两个驱动信号的频率,可以降低显示驱动芯片的功能,因此,能够节省功耗。
本申请的第二方面提供了一种终端,包括:显示屏、一个或多个处理器和显示驱动芯片。所述显示屏为有机发光显示屏,所述有机发光显示屏的每个像素单元至少包括一个红色子像素、一个蓝色子像素和一个绿色子像素。所述显示驱动芯片用于通过驱动信号驱动所述至少一个红色子像素、一个蓝色子像素和一个绿色子像素被点亮。所述处理器用于,监测所述终端是否满足低功耗运行条件,监测到所述终端满足所述低功耗运行条件,向所述显示驱动芯片发送控制指令,所述控制指令用于指示降低红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率。所述终端能够通过降低驱动信号的频率,节省功耗。
在一种实现方式中,所述降低红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率包括:将所述红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率降到第一数值。进一步的,所述方法还包括:将除频率降到所述第一数值的驱动信号之外的其它驱动信号的频率降到第二数值,所述第二数值大于所述第一数值。将一部分驱动信号的频率降低到第一数值,将另一部分驱动信号的频率降低到大于第一数值的第二数值,有利于在节省功耗的前提下,最大程度保证显示屏的正常显示。
在一种实现方式中,所述第一数值为1Hz,所述第二数值为15Hz。
在一种实现方式中,所述低功耗运行条件包括以下至少一项:所述终端的电量小于预设值、所述终端当前处于低功耗模式、所述终端接收到预设的指令。
本申请的第三方面提供了一种显示屏控制方法,包括:监测终端是否满足低功耗运行条件,其中,所述终端的显示屏为有机发光显示屏,所述有机发光显示屏的每个像素单元至少包括一个红色子像素、一个蓝色子像素和一个绿色子像素。监测到所述终端满足所述低功耗运行条件,关闭红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个。通过关闭部分驱动信号,能够节省功耗。
本申请的第四方面提供了一种终端,包括:显示屏、一个或多个处理器和显示驱动芯片。所述显示屏为有机发光显示屏,所述有机发光显示屏的每个像素单元至少包括一个红色子像素、一个蓝色子像素和一个绿色子像素。所述显示驱动芯片用于通过驱动信号驱动所述至少一个红色子像素、一个蓝色子像素和一个绿色子像素被点亮。所述处理器用于监测所述终端是否满足低功耗运行条件,监测到所述终端满足所述低功耗运行条件,向所述显示驱动芯片发送控制指令,所述控制指令用于指示关闭红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个。所述终端可以通过关闭部分驱动信号,能够节省功耗。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为终端中显示电路的结构示意图;
图2为驱动图1所示的显示电路发光的波形示意图;
图3为本发明实施例公开的一种显示屏控制方法的流程图;
图4为本发明实施例公开的又一种显示屏控制方法的流程图;
图5(a)为现有技术中显示屏控制的波形示意图;
图5(b)为本发明实施例公开的显示屏控制方法的波形示意图;
图6本发明实施例公开的又一种显示屏控制方法的流程图;
图7为本发明实施例公开的一种终端的结构示意图。
具体实施方式
图1为终端中的显示电路的结构示意图。图1中左侧所示的显示屏上的像素与右侧所示的子像素阵列的对应关系为:显示屏上的每一个像素发出的光均由至少一个红色子像素、一个绿色子像素和一个蓝色子像素发出的光合成。所有像素对应的子像素构成图1中右侧所示的子像素阵列。基于上述对应关系,将显示屏上的任意一个像素称为像素单元,每个像素单元包括子像素阵列中的至少一个红色子像素、一个绿色子像素和一个蓝色子像素(图1中虚线框内的部分)。
子像素阵列中的任意一列中包括相同颜色的子像素,如图1所示,子像素阵列中的第1列中的子像素均为红色子像素,第2列中的子像素均为绿色子像素,第3列中的子像素均为蓝色子像素。第4列至第6列的排列方式、第7列至第9列的排列方式均与第1列至第3列的排列方式相同。基于上述排列方式,子像素阵列中的任意一行中,每三个子像素构成左侧显示屏上的一个像素单元。像素发出的白光由红色子像素发出的红光、绿色子像素发出的绿光和蓝色子像素发出的蓝光合成。
图1中,S0、S1和S2均为信号源。每一个信号源均通过多路器(multiplexer,MUX)分别可开关地连接一列红色子像素、一列绿色子像素以及一列蓝色子像素。显示驱动芯片通过信号线分别与红色子像素、绿色子像素以及蓝色子像素相连。具体的,显示驱动芯片通过信号线1与子像素阵列中的所有红色子像素相连,通过信号线2与子像素阵列中的所有绿色子像素相连,通过信号线3与子像素阵列中的所有蓝色子像素相连。其中,每根信号线上的圆点表示在圆点处交叉的信号线连通。
MUX通过信号线1从显示驱动芯片接收红色子像素的驱动信号(以SWR表示),通过信号线2从显示驱动芯片接收绿色子像素的驱动信号(以SWG表示),通过信号线3从显示驱动芯片接收蓝色子像素的驱动信号(以SWB表示)。在接收到的某种颜色的子像素的驱动信号有效(高电平)的情况下,MUX连通该颜色的子像素与信号源之间的开关。
图1所示为现有的低功耗模式下的显示屏的显示情况,在低功耗模式下,子像素阵列中,只有第2、3和4行的部分子像素被点亮(点亮的子像素使用白色方块表示,白色方块中的不同图案用于区分不同的颜色),而其它子像素均不被点亮(不被点亮的子像素使用黑色方块表示)。对应到显示屏上,显示屏上只有显示时间的像素被点亮(白色部分),而其它像素不被点亮(黑色部分)。
图2为形成图1所示的子像素阵列中部分子像素被点亮的场景的控制信号的波形图。图2中,第一行波形为控制时长波形,其中,高电平依次表示图1中的子像素阵列的第1行子像素、第2行子像素、……第5行子像素的控制周期。
SWR为图1中的子像素阵列中的红色子像素的驱动信号,高电平表示驱动信号有效。SWG为图1中的子像素阵列中的绿色子像素的驱动信号,高电平表示驱动信号有效。SWB为图1中的子像素阵列中的蓝色子像素的驱动信号,高电平表示驱动信号有效。
S0、S1和S2均为信号源,高电平表示有效。
在第1行子像素的控制周期中,驱动信号中的SWR、SWG和SWB依次出现高电平,因此,MUX依次将红色子像素、绿色子像素和蓝色子像素与信号源连通。但由于S0、S1和S2均为低电平,所以,第一行子像素均不被点亮。
在第2行子像素的控制周期中,驱动信号中的SWR、SWG和SWB依次出现高电平。SWR为高电平时,MUX将红色子像素分别与相应的信号源连通,因为在第二行子像素的控制周期中,S0和S1为高电平,S2均为低电平,所以S0和S1控制下的红色子像素被点亮,而S2控制下的红色子像素不被点亮。绿色子像素和蓝色子像素被点亮的原理与红色子像素被点亮的原理相同。
第3行和第4行子像素与第2行子像素的点亮原理相同,第5行子像素与第1行子像素的点亮原理相同,这里不再赘述。
从图1和图2可以看出,对于子像素阵列中计划不被点亮的子像素区域,将该区域的信号源置为无效即可。对于子像素阵列中计划被点亮的子像素区域,除了将该区域的信号源置为有效之外,还要配合驱动信号驱动点亮子像素。
计划点亮哪些区域的子像素并不在本申请的讨论范围内。
本申请实施例提出的显示屏控制方法的目的在于,通过降低SWR、SWG和SWB中任意一个或者任意两个的频率,实现降低显示驱动芯片的功耗的目的。
图1所示的场景适用的终端具有发光显示屏,发光显示屏包括但不限于AMOLED显示屏以及有机发光二极管(organic light emitting diode,OLED)显示屏。具体的,终端可以为手持设备、车载设备、可穿戴设备、计算设备,以及各种形式的用户设备(userequipment,UE),移动台(mobile station,MS)等。示例性地,本申请中的终端可以是智能手表。
发光显示屏中的像素与子像素阵列的对应关系可以如图1所示。但图1仅为示例,子像素阵列中的子像素还可以采用其它排列方式,例如RGB PenTile方式。
图3为本申请实施例公开的一种显示屏控制方法,包括以下步骤:
S301:监测终端是否满足低功耗运行条件,如果是,执行S302,如果否,继续执行S301,可选的,可以以预设周期执行S301。
具体的,低功耗运行条件可以包括以下至少一项:终端的电量小于预设值、当前处于低功耗模式、终端接收到预设的指令(例如,用户在终端上选择“超级省电”选项而出发的指令)。
其中,低功耗模式是指,为了节省电量而启动的降低终端的消耗的模式。在低功耗模式下,终端可能采用关闭某些应用、某些硬件、某些进程等方式节省电量。例如,终端启动待机模式,在待机模式下,终端关闭某些处于后天运行的进程。
S302:降低SWR、SWG和SWB中任意一个或者任意两个的频率。
因为功率P=fcv^2,其中,f表示驱动频率,v表示控制信号的幅值,c表示负载。从上式可以看出,当f降低时,功率也随着降低。因此,通过降低子像素的控制信号的频率的方法可以降低显示驱动芯片的功耗,从而降低终端的功耗,提高终端的续航能力。
图4为本申请实施例公开的又一种显示屏控制方法,与图3所示的方法的区别在于,为了进一步减少功耗,可以将三路子像素的驱动信号的频率均降低。
具体的,图4包括以下步骤:
S401:监测终端是否满足低功耗运行条件,如果是,执行S402。
S402:将SWR、SWG和SWB中任意一个或任意两个的频率降到第一数值。
S403:将除降到第一数值的驱动信号之外的其它驱动信号的频率降到第二数值,第二数值大于第一数值。
例如,S402中,将SWG和SWB降到1Hz,则S403中,将SWR降到15Hz。
S402和S403的顺序可以交换。
下面以图5为例对图3以及图4所示的流程进行举例说明:
终端正常工作状态下,SWR、SWG和SWB的频率均为60Hz。显示驱动芯片监测终端是否进入低功耗模式,如果监测到终端进入低功耗模式,则降低SWG的频率为15Hz,并降低SWR和SWB的频率为1Hz。
或者,终端已经处于低功耗模式,即SWR、SWG和SWB的频率均由60Hz降到了15Hz,在此情况下,如果监测到用户输出的进入“超级省电”模式的指令,则将SWG和SWB的频率均由15Hz降到1Hz,SWR的频率保持在15Hz。
图5(a)为图1所示的现有的低功耗模式下SWR、SWG和SWB均为15Hz的波形图,图5(b)为使用图4所示的方法后SWR和SWB为1Hz,SWG为15Hz的波形图。图5(a)和图5(b)中SWR、SWG和SWB上的竖线表示,在一帧中,并行发出多行(例如1092行)子像素的驱动信号,以SWR为例,任意一条竖线表示对子像素阵列的一行子像素发出的SWR。
基于图1所示的显示屏被点亮的控制原理,因为SWR和SWB为1Hz,SWG为15Hz,所以,在信号源(S0、S1或S2)为高电平的情况下,红色子像素、绿色子像素和蓝色子像素均会被点亮。因此,从理论上说,显示屏上被点亮的像素显示为白色。
但是,因为SWR和SWB的驱动频率为小于15Hz的1Hz,所以,相当于红色子像素和蓝色子像素两次被点亮的间隔时间变长,所以,对于质量不佳的显示屏,显示屏上显示的像素从视觉上可能显示为绿色。
同理,可以将SWG和SWB的频率降为1Hz,SWR的频率为15Hz。还可以将SWR的频率降低为1Hz,SWG和SWB的频率为15Hz。
因为人眼对于绿光更为敏感,所以,在降低三种驱动信号SWR、SWG和SWB的频率的情况下,可以优先考虑SWG的频率为15Hz,SWR和SWB的频率为1Hz,以充分利用人眼对于绿光敏感性,使得用户感受不到显示屏上显示的内容的亮度过暗。
1Hz仅为一种举例,本申请的实施例对降低后的频率不做限定,可选的,降低后的频率小于15Hz。15Hz也仅为一种举例。
当然,降低后的频率越低,显示驱动芯片的功耗就越低,但显示屏上显示的像素可能不能显示为白色的可能性就越大。在实际应用中,可以依据实际需求调整第一数值和第二数值。
从图5可以看出,在SWR、SWG和SWB的频率不同,且SWR和SWB的频率均低于SWG的频率的情况下,依然可以维持显示屏的正常显示。可见,本实施例所示的屏幕显示控制方法,能够在维持显示屏的正常显示的前提下,降低显示驱动器的功耗。
图6为本申请实施例公开的又一种显示屏控制方法,包括步骤:
S601:监测终端是否满足低功耗运行条件,如果是,执行S602。
S602:关闭SWR、SWG和SWB中任意一个或任意两个。
可选的,关闭部分驱动信号后,还可以降低未关闭的驱动信号的频率。
与上述实施例相比,图6所示的实施例直接关闭驱动信号,以降低显示驱动器的功耗。关闭部分驱动信号后,只有部分颜色的子像素被点亮,则显示屏发出的光的颜色为未被关闭驱动信号的子像素的颜色。例如,关闭SWR和SWB,则只有绿色子像素被点亮,因此,显示屏显示的内容为绿色。进一步的,可以优先考虑保留SWG,使得用户感受不到显示屏上显示的内容的亮度过暗。
图7为本申请实施例公开的一种终端,包括:显示屏、一个或多个处理器和显示驱动芯片。
其中,显示屏为有机发光显示屏。如图1中所示,有机发光显示屏的每个像素单元至少包括一个红色子像素、一个蓝色子像素和一个绿子像素。
显示驱动芯片用于通过驱动信号驱动所述至少一个红色子像素、一个蓝色子像素和一个绿子像素被点亮。显示驱动芯片与显示屏的连接关系可以参见图1。
处理器用于监测所述终端是否满足低功耗运行条件,监测到所述终端满足所述低功耗运行条件,向所述显示驱动芯片发送控制指令,所述控制指令用于指示降低红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率。
除了上述功能之外,处理器还可以用于监测所述终端是否满足低功耗运行条件,监测到所述终端满足所述低功耗运行条件,向所述显示驱动芯片发送控制指令,所述控制指令用于指示关闭红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个。
处理器实现上述功能的具体过程可以参见图3、图4或图6所示,这里不再赘述。
实现上述功能的处理器可能是所述终端的中央处理器,也可以是专门用于控制显示屏的处理器,也可以是集成在显示驱动芯片上的处理器,还可以是除了上述处理器之外,单独设置的处理器。
处理器可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC),现场可编程门阵列(FPGA)或者其他可编程逻辑器件、晶体管逻辑器件,硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框,模块和电路。所述处理器也可以是实现计算功能的组合,例如包含一个或多个微处理器组合,DSP和微处理器的组合等等。
上述处理器的功能,可以硬件的方式来实现,也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成,软件模块可以被存放于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器,从而使处理器能够从该存储介质读取信息,且可向该存储介质写入信息。当然,存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外,该ASIC可以位于终端中。当然,处理器和存储介质也可以作为分立组件存在于终端中。
终端中包括的各个部分可以通过总线通信。
图7所示的终端,能够通过关闭或降低子像素的驱动信号的频率,实现节省功耗的目的。
本领域技术人员应该可以意识到,在上述一个或多个示例中,本申请所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。本领域技术人员应该很容易意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。当使用软件实现时,可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质,其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
Claims (10)
1.一种显示屏控制方法,其特征在于,包括:
监测终端是否满足低功耗运行条件,其中,所述终端的显示屏为有机发光显示屏,所述有机发光显示屏的每个像素单元至少包括一个红色子像素、一个蓝色子像素和一个绿色子像素;
监测到所述终端满足所述低功耗运行条件,降低红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率。
2.根据权利要求1所述的方法,其特征在于,所述降低红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率包括:
将所述红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率降到第一数值;
所述方法还包括:
将除频率降到所述第一数值的驱动信号之外的其它驱动信号的频率降到第二数值,所述第二数值大于所述第一数值。
3.根据权利要求2所述的方法,其特征在于,所述第一数值为1Hz,所述第二数值为15Hz。
4.根据权利要求1-3任一项所述的方法,其特征在于,所述低功耗运行条件包括以下至少一项:
所述终端的电量小于预设值;
所述终端当前处于低功耗模式;
所述终端接收到预设的指令。
5.一种显示屏控制方法,其特征在于,包括:
监测终端是否满足低功耗运行条件,其中,所述终端的显示屏为有机发光显示屏,所述有机发光显示屏的每个像素单元至少包括一个红色子像素、一个蓝色子像素和一个绿色子像素;
监测到所述终端满足所述低功耗运行条件,关闭红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个。
6.一种终端,其特征在于,包括:
显示屏、一个或多个处理器和显示驱动芯片;
所述显示屏为有机发光显示屏,所述有机发光显示屏的每个像素单元至少包括一个红色子像素、一个蓝色子像素和一个绿色子像素;
所述显示驱动芯片用于,通过驱动信号驱动所述至少一个红色子像素、一个蓝色子像素和一个绿色子像素被点亮;
所述处理器用于,监测所述终端是否满足低功耗运行条件,监测到所述终端满足所述低功耗运行条件,向所述显示驱动芯片发送控制指令,所述控制指令用于指示降低红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率。
7.根据权利要求6所述的终端,其特征在于,所述处理器用于,向所述显示驱动芯片发送控制指令,所述控制指令用于指示降低红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率包括:
所述处理器具体用于,向所述显示驱动芯片发送控制指令,所述控制指令用于指示将所述红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个的频率降到第一数值;
所述控制指令还用于指示:将除频率降到所述第一数值的驱动信号之外的其它驱动信号的频率降到第二数值,所述第二数值大于所述第一数值。
8.根据权利要求7所述的终端,其特征在于,所述第一数值为1Hz,所述第二数值为15Hz。
9.根据权利要求6-8任一项所述的终端,其特征在于,所述低功耗运行条件包括以下至少一项:
所述终端的电量小于预设值;
所述终端当前处于低功耗模式;
所述终端接收到预设的指令。
10.一种终端,其特征在于,包括:
显示屏、一个或多个处理器和显示驱动芯片;
所述显示屏为有机发光显示屏,所述有机发光显示屏的每个像素单元至少包括一个红色子像素、一个蓝色子像素和一个绿色子像素;
所述显示驱动芯片用于,通过驱动信号驱动所述至少一个红色子像素、一个蓝色子像素和一个绿色子像素被点亮;
所述处理器用于,监测所述终端是否满足低功耗运行条件,监测到所述终端满足所述低功耗运行条件,向所述显示驱动芯片发送控制指令,所述控制指令用于指示关闭红色子像素的驱动信号、绿色子像素的驱动信号和蓝色子像素的驱动信号中的任意一个或任意两个。
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