CN109473058B - 显示装置、显示控制装置及方法 - Google Patents
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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
本公开是关于一种显示装置、显示控制装置及显示控制装置,涉及显示技术领域。本公开的显示控制装置包括:多个移位寄存器,其中每一所述移位寄存器用于输出一显示控制信号,且多个所述显示控制信号的占空比不完全相同;选通单元,与各所述移位寄存器连接,用于在各脉冲时段根据选通信号选择一所述移位寄存器输出的所述显示控制信号输入至像素电路。本公开的显示控制装置可以对显示装置的亮度进行更加细腻的调整。
Description
技术领域
本公开涉及显示技术领域,具体而言,涉及一种显示控制装置、显示控制方法及显示装置。
背景技术
随着光学技术和半导体技术的发展,以液晶显示装置(Liquid Crystal Display,LCD)和有机发光二极管显示装置(Organic Light Emitting Diode,OLED)为代表的平板显示装置具有轻薄、能耗低、反应速度快、色纯度佳以及对比度高等特点,在显示领域占据了主导地位。
目前许多OLED显示装置是采用调光模式来调整显示亮度;通过调光模式,可以在保持数据信号电压的输入值不变的情况下通过调整各子像素的发光时间来达到调整显示亮度的目的。
然而,现有的调光模式存在亮度调节不够细腻的问题。
需要说明的是,在上述背景技术部分公开的信息仅用于加强对本公开的背景的理解,因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
本公开的目的在于提供一种显示控制装置、显示控制方法及显示装置,可以实现对于显示装置的亮度进行更加细腻的调节。
根据本公开的一个方面,提供一种显示控制装置,包括:
多个移位寄存器,其中每一所述移位寄存器用于输出一显示控制信号,且多个所述显示控制信号的占空比不完全相同;
选通单元,与各所述移位寄存器连接,用于在各脉冲时段根据选通信号选择一所述移位寄存器输出的所述显示控制信号输入至像素电路。
在本公开的一种示例性实施例中,所述选通单元包括多个开关器件,每一开关器件连接一所述移位寄存器且在所述选通信号的控制下导通或关断。
在本公开的一种示例性实施例中,所述开关器件包括薄膜晶体管,且所述薄膜晶体管的栅极接收所述选通信号。
在本公开的一种示例性实施例中,所述移位寄存器包括信号输入端,所述移位寄存器用于根据所述信号输入端接收的输入信号生成不同占空比的所述显示控制信号。
在本公开的一种示例性实施例中,所述多个移位寄存器包括:
第一移位寄存器,用于输出具有第一占空比的第一显示控制信号;
第二移位寄存器,用于输出具有第二占空比的第二显示控制信号;其中,所述第二占空比与所述第一占空比不同。
在本公开的一种示例性实施例中,所述选通单元包括:
第一开关器件,与所述第一移位寄存器连接,用于在第一脉冲时段根据选通信号导通而将所述第一显示控制信号输入至像素电路;
第二开关器件,与所述第二移位寄存器连接,用于在第二脉冲时段根据选通信号导通而将所述第二显示控制信号输入至像素电路;
其中,所述第一脉冲时段和第二脉冲时段均包括一或多个脉冲时段,且所述第一脉冲时段与所述第二脉冲时段不包括相同的脉冲时段。
在本公开的一种示例性实施例中,所述移位寄存器的数量与一帧内所述脉冲时段的数量相同。
根据本公开的一个方面,提供一种显示控制方法,应用于根据上述任意一项所述的显示控制装置,所述方法包括:
在每帧的各脉冲时段,通过选通信号选择一所述移位寄存器输出的所述显示控制信号输入至像素电路。
在本公开的一种示例性实施例中,所述方法还包括:
向所述移位寄存器输入不同的输入信号,以使所述移位寄存器根据不同的所述输入信号生成不同占空比的所述显示控制信号。
根据本公开的一个方面,提供一种显示装置,包括根据上述任意一项所述的显示控制装置。
由上可知,本公开示例性实施例中的显示控制装置通过配置多个移位寄存器以及选通单元,并且选通单元用于在各脉冲时段根据选通信号选择一移位寄存器输出的显示控制信号输入至像素电路。因此,基于本公开示例实施方式中的显示控制装置及显示控制装置,可以实现对像素电路在单个脉冲时段接收到的显示控制信号进行针对性的精确调整;相比于现有技术中,对所有脉冲时段的占空比都进行相同的调整的方法,本示例实施方式中的信号占空比调整方式更加细腻,进而可以对像素电路所在的子像素进行更加细腻的亮度调整,提升显示画面的品质。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本公开的实施例,并与说明书一起用于解释本公开的原理。显而易见地,下面描述中的附图仅仅是本公开的一些实施例,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为相关技术中像素电路的结构示意图。
图2为相关技术中显示控制信号的示意图。
图3为本公开显示控制装置的一种实施方式的结构示意图。
图4为本公开显示控制装置的一种实施方式的结构示意图。
图5为本公开显示控制装置的一种信号时序示意图。
图6为本公开显示控制装置的一种信号时序示意图。
图7为本公开显示控制装置的一种实施方式的结构示意图。
图8为本公开显示控制装置的一种信号时序示意图。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而,示例实施方式能够以多种形式实施,且不应被理解为限于在此阐述的实施方式;相反,提供这些实施方式使得本发明将全面和完整,并将示例实施方式的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构,因而将省略它们的详细描述。
虽然本说明书中使用相对性的用语,例如“上”“下”来描述图标的一个组件对于另一组件的相对关系,但是这些术语用于本说明书中仅出于方便,例如根据附图中所述的示例的方向。能理解的是,如果将图标的装置翻转使其上下颠倒,则所叙述在“上”的组件将会成为在“下”的组件。当某结构在其它结构“上”时,有可能是指某结构一体形成于其它结构上,或指某结构“直接”设置在其它结构上,或指某结构通过另一结构“间接”设置在其它结构上。
用语“一个”、“一”、“该”和“所述”用以表示存在一个或多个要素/组成部分/等;用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等;用语“第一”和“第二”仅作为标记使用,不是对其对象的数量限制。
如图1所示,为相关技术中一种简单的OLED像素电路。像素电路在工作时,在充电阶段,可以利用扫描信号Gate导通第一开关晶体管T1,使数据信号Data写入电容C进行充电;在发光阶段,利用电容C存储的信号导通驱动晶体管T2,同时利用显示控制信号Em导通第二开关晶体管T3,进而可以使得有机发光二极管OLED在电源信号Vdd以及Vss的作用下发光。
在图2中示出了3个不同占空比的显示控制信号Em1、Em2以及Em3。其中,显示控制信号Em2的占空比最大,显示控制信号Em1的占空比次之,显示控制信号Em3的占空比最小。由于有机发光二极管OLED的发光受到显示控制信号Em的控制,因此显示控制信号Em的占空比则决定了有机发光二极管OLED的发光时间;具体而言,显示控制信号的占空比越大,则有机发光二极管OLED的发光时间越长。例如,相比于输入显示控制信号Em1和Em3,当输入显示控制信号Em2时,图1中所示的OLED像素电路所在子像素的发光时间最长。
在一帧显示时间中,子像素的发光时间与该子像素的显示亮度的一定程度上呈正相关关系。因此,在现有显示装置调光模式下,可以在保持数据信号Data输入值不变的情况下,通过调整各子像素的发光时间来达到调整显示亮度的目的;也即可以通过调整显示控制信号Em的占空比来达到调整显示亮度的目的。
继续参考图2所示,在每一个帧周期内,显示控制信号有4个相同的脉冲时段T1~T4。目前的OLED显示装置中,上述的显示控制信号Em是由移位寄存器产生;进而,相关技术中,是通过移位寄存器控制显示控制信号的占空比。然而,存在这样的问题:无法调整单个脉冲时段的占空比,即在调整显示控制信号的占空比时,4个脉冲时段的占空比都会进行相同的改变,使得亮度调节不够细腻。
基于上述内容,本示例实施方式中首先提供了一种显示控制装置。参考图3所示,该显示控制装置300主要包括多个移位寄存器SR1~SRn以及选通单元310;其中,每一所述移位寄存器用于输出一显示控制信号,且多个所述显示控制信号的占空比不完全相同;选通单元与各所述移位寄存器连接,用于在各脉冲时段根据选通信号选择一所述移位寄存器输出的所述显示控制信号输入至像素电路320。
举例而言,移位寄存器SR1输出的显示控制信号Em1的占空比为1/a,SR2输出的显示控制信号Em2的占空比为1/b,SRn输出的显示控制信号的占空比为1/c。如果目标显示控制信号包括4个脉冲时段,则可以在第1个脉冲时段以及第2个脉冲时段选择移位寄存器SR2输出的显示控制信号Em2输入至像素电路,在第3个脉冲时段选择移位寄存器SR3输出的显示控制信号Em3输入至像素电路,在第4个脉冲时段选择移位寄存器SR4输出的显示控制信号Em4输入至像素电路;或者,在第1个脉冲时段选择移位寄存器SR1输出的显示控制信号Em1输入至像素电路,在第2个脉冲时段选择移位寄存器SR2输出的显示控制信号Em2输入至像素电路,在第3个脉冲时段选择移位寄存器SR3输出的显示控制信号Em3输入至像素电路,在第4个脉冲时段选择移位寄存器SR4输出的显示控制信号Em4输入至像素电路;或者,在第1个脉冲时段选择移位寄存器SRn输出的显示控制信号Emn输入至像素电路,在第2个脉冲时段选择移位寄存器SR5输出的显示控制信号Em5输入至像素电路,在第3个脉冲时段以及第4个脉冲时段选择移位寄存器SR1输出的显示控制信号Em1输入至像素电路等等。
需要说明的是,移位寄存器通常包括信号输入端、信号输出端、上拉单元、上拉控制单元、下拉单元、下拉控制单元以及自举电容等部分。移位寄存器的信号输入端用于接收输入信号,进而可以在上拉单元、上拉控制单元、下拉单元、下拉控制单元以及自举电容等其他部分的作用下,生成与输入信号波形相同但相位不同的输出信号,也即显示控制信号。因此,本示例实施方式中,可以在不同的移位寄存器的信号输出端输入不同占空比的输入信号(例如相邻级移位寄存器的输出信号或者起始信号等),进而各所述移位寄存器可以根据所述信号输入端接收的输入信号生成不同占空比的所述显示控制信号。
由上可知,基于本示例实施方式中的显示控制装置,可以实现对像素电路在单个脉冲时段接收到的显示控制信号进行针对性的精确调整;相比于现有技术中,对所有脉冲时段的占空比都进行相同的调整的方法,本示例实施方式中的信号占空比调整方式更加细腻,进而可以对像素电路所在的子像素进行更加细腻的亮度调整,提升显示画面的品质。
本示例实施方式中,所述选通单元可以包括多个可选通的开关器件。举例而言,选通单元可以包括多个开关器件,每一开关器件连接一所述移位寄存器且在所述选通信号的控制下导通或关断,根据开关器件的不同,所述选通信号可以相应的为电流信号或者电压信号,本示例性实施例中对此不做特殊限定。本示例实施方式中,所述开关器件可以包括薄膜晶体管,且所述薄膜晶体管的栅极接收所述选通信号,进而可以在选通信号的控制下导通或关断。在使用薄膜晶体管作为开关器件时,可以在阵列基板上形成像素电路中的薄膜晶体管的同时形成选通单元,从而简化工艺,降低成本。当然,在本公开的其他示例性实施例中,所述开关器件也可以为如绝缘栅双极型晶体管、双极型三极管、绝缘栅型场效应管、可控硅等其他类型的可控开关,这同样属于本公开的保护范围。
本示例实施方式中,可以在一帧中仅针对显示控制信号的部分脉冲时段的占空比单独进行调整,也可以在一帧中针对显示控制信号的所有脉冲时段的占空比单独进行调整。举例而言:
参考图4所示,其中所述多个移位寄存器可以包括第一移位寄存器SR1以及第二移位寄存器SR2。第一移位寄存器SR1可以用于输出具有第一占空比的第一显示控制信号Em1,第二移位寄存器SR2可以用于输出具有第二占空比的第二显示控制信号Em2;其中,所述第二占空比与所述第一占空比不同。相应的,选通单元可以包括第一开关器件M1以及第二开关器件M2;其中,第一开关器件M1与所述第一移位寄存器SR1连接,用于在第一脉冲时段根据选通信号SW1导通而将所述第一显示控制信号Em1输入至像素电路320;第二开关器件M2与所述第二移位寄存器SR2连接,用于在第二脉冲时段根据选通信号SW2导通而将所述第二显示控制信号Em2输入至像素电路320;其中,所述第一脉冲时段和第二脉冲时段均包括一或多个脉冲时段,且所述第一脉冲时段与所述第二脉冲时段不包括相同的脉冲时段。
例如图5所示,像素电路320接收到的显示控制信号Em包括4个脉冲时段T1~T4,其中,第一脉冲时段包括脉冲时段T1、脉冲时段T3以及脉冲时段T4,第一脉冲时段的信号占空比需要为1/2;第二脉冲时段包括脉冲时段T2,第二脉冲时段的信号占空比需要为1/3;则可以通过各移位寄存器的输入信号,控制第一占空比为1/2,第二占空比为1/3,并且通过如图5所示的选通信号SW1以及SW2对第一开关器件M1以及第二开关器件M2进行控制,使得第一开关器件M1在脉冲时段T1、脉冲时段T3以及脉冲时段T4导通,使得第二开关器件M2在脉冲时段T2导通。再例如图6所示,第一脉冲时段包括脉冲时段T1以及脉冲时段T3,第一脉冲时段的信号占空比需要为1/2;第二脉冲时段包括脉冲时段T2以及脉冲时段T4,第二脉冲时段的信号占空比需要为2/3;则可以通过各移位寄存器的输入信号,控制第一占空比为1/2,第二占空比为2/3,并且通过如图6所示的选通信号SW1以及SW2对第一开关器件M1以及第二开关器件M2进行控制,使得第一开关器件M1在脉冲时段T1以及脉冲时段T3导通,使得第二开关器件M2在脉冲时段T2以及脉冲时段T4导通。因此,基于图4所示的显示控制装置,结合各移位寄存器的输入信号,可以在一帧中针对显示控制信号的部分脉冲时段的占空比单独进行调整。
参考图7所示,其中所述多个移位寄存器可以包括四个移位寄存器(第一移位寄存器SR1至第四移位寄存器SR4),像素电路320接收到的显示控制信号包括4个脉冲时段T1~T4,即移位寄存器的数量与一帧内所述脉冲时段的数量相同。第一移位寄存器SR1至第四移位寄存器SR4可以分别用于输出具有第一占空比至第四占空比的显示控制信号Em1~Em4。相应的,选通单元可以包括第一开关器件M1至第四开关器件M4。例如图8所示,在脉冲时段T1的信号占空比需要为1/2、脉冲时段T2的信号占空比需要为1/3、脉冲时段T3的信号占空比需要为2/3、脉冲时段T4的信号占空比需要为1/4,则可以通过各移位寄存器的输入信,控制第一占空比为1/2,第二占空比为1/3、第三占空比为2/3,第四占空比为1/4,并且通过如图8所示的选通信号号SW1~SW4对第一开关器件M1至第四开关器件M4进行控制,使得第一开关器件M1在脉冲时段T1导通,使得第二开关器件M2在脉冲时段T2导通,使得第三开关器件M3在脉冲时段T3导通,使得第四开关器件M4在脉冲时段T4导通。因此,基于图7所示的显示控制装置,结合各移位寄存器的输入信号,可以在一帧中针对显示控制信号的所有脉冲时段的占空比单独进行调整。
当然,在本公开的其他示例性实施例中,移位寄存器的数量也可以在大于2且小于一帧内所述脉冲时段的数量,本示例性实施例中对此不做特殊限定。
进一步的,本示例实施方式中,还提供了一种应用于上述显示控制装置的显示控制方法。具体而言,所述方法可以包括:在每帧的各脉冲时段,通过选通信号选择一所述移位寄存器输出的所述显示控制信号输入至像素电路。此外,所述显示控制方法还可以包括:向所述移位寄存器输入不同的输入信号,以使所述移位寄存器根据不同的所述输入信号生成不同占空比的所述显示控制信号。
由于上述显示控制方法中各步骤的具体细节已经在对应的显示控制装置中进行了详细的描述,因此此处不再赘述。
本公开实施方式还提供一种显示装置,该显示装置可包括显示面板以及上述实施方式中的显示控制装置。由于该显示装置的显示控制装置与上述实施方式中的显示控制装置相同,因而具有相同技术效果,在此不再详述。
本示例实施方式中,所述显示装置包括的显示面板可以为OLED显示面板或者液晶显示面板,也可以为量子点显示面板或者电子纸显示面板等。具体产品表现上,所述显示装置例如可以包括手机、平板电脑、电视机、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
本领域技术人员在考虑说明书及实践这里公开的发明后,将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的,本公开的真正范围和精神由所附的权利要求指出。
Claims (10)
1.一种显示控制装置,其特征在于,包括:
多个移位寄存器,其中每一所述移位寄存器用于输出一显示控制信号,且多个所述显示控制信号的占空比不完全相同;
选通单元,与各所述移位寄存器连接,用于在同一帧周期内包含的各脉冲时段根据选通信号选择一所述移位寄存器输出的所述显示控制信号输入至像素电路。
2.根据权利要求1所述的显示控制装置,其特征在于,所述选通单元包括多个开关器件,每一开关器件连接一所述移位寄存器且在所述选通信号的控制下导通或关断。
3.根据权利要求2所述的显示控制装置,其特征在于,所述开关器件包括薄膜晶体管,且所述薄膜晶体管的栅极接收所述选通信号。
4.根据权利要求1所述的显示控制装置,其特征在于,所述移位寄存器包括信号输入端,所述移位寄存器用于根据所述信号输入端接收的输入信号生成不同占空比的所述显示控制信号。
5.根据权利要求1~4任意一项所述的显示控制装置,其特征在于,所述多个移位寄存器包括:
第一移位寄存器,用于输出具有第一占空比的第一显示控制信号;
第二移位寄存器,用于输出具有第二占空比的第二显示控制信号;其中,所述第二占空比与所述第一占空比不同。
6.根据权利要求5所述的显示控制装置,其特征在于,所述选通单元包括:
第一开关器件,与所述第一移位寄存器连接,用于在第一脉冲时段根据选通信号导通而将所述第一显示控制信号输入至像素电路;
第二开关器件,与所述第二移位寄存器连接,用于在第二脉冲时段根据选通信号导通而将所述第二显示控制信号输入至像素电路;
其中,所述第一脉冲时段和第二脉冲时段位于同一帧周期内且均包括一或多个脉冲时段,且所述第一脉冲时段与所述第二脉冲时段不包括相同的脉冲时段。
7.根据权利要求1~4任意一项所述的显示控制装置,其特征在于,所述移位寄存器的数量与一帧内所述脉冲时段的数量相同。
8.一种显示控制方法,应用于根据权利要求1~7任意一项所述的显示控制装置;其特征在于,所述方法包括:
在每帧的各所述脉冲时段,通过选通信号选择一所述移位寄存器输出的所述显示控制信号输入至像素电路。
9.根据权利要求8所述的显示控制方法,其特征在于,所述方法还包括:
向所述移位寄存器输入不同的输入信号,以使所述移位寄存器根据不同的所述输入信号生成不同占空比的所述显示控制信号。
10.一种显示装置,其特征在于,包括根据权利要求1~7任意一项所述的显示控制装置。
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