CN109166545A - Ar/vr显示设备的驱动方法、驱动装置及显示设备 - Google Patents
Ar/vr显示设备的驱动方法、驱动装置及显示设备 Download PDFInfo
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Abstract
本申请公开了一种AR/VR显示设备的驱动方法、驱动装置及显示设备。该AR/VR显示设备的驱动方法,其特征在于,包括:在每次背光插黑阶段启动时***预配置时段;在预配置时段,将部分屏或全屏的像素行配置为预配置画面,预配置画面包括:显示黑画面、白画面或某一灰阶的画面。根据本申请实施例提供的技术方案,通过在每次背光插黑起动阶段***预配置时段驱动部分屏或全屏像素行配置为预配置画面,能够解决传统灰阶到灰阶转换带来的响应速度慢的问题。
Description
技术领域
本申请一般涉及显示领域,尤其涉及AR/VR显示设备的驱动方法、驱动装置及显示设备。
背景技术
VR***通常应用在游戏及视频播放等领域,切换场景频繁,为增加用户的视觉流畅性,通常显示刷新率大于90Hz。由于液晶响应需要几毫秒的时间,在场景高速切换时会发生由于液晶响应不及时而造成的拖影现象,严重影响VR用户体验。目前采用液晶响应时将背光关闭,响应结束后背光开启的方法效果较为明显,这种方式称为背光插黑。
目前,在正常的VR显示***中,人头部的移动和眼球的转动与进入人眼的图像不匹配会造成不适感觉,所以快速的跟随和响应时间对于VR显示非常重要。而灰阶响应时间(Gray to Gray,GTG)较慢,成为响应时间的瓶颈。
发明内容
鉴于现有技术中的上述缺陷或不足,期望提供一种响应时间快速的AR/VR显示设备的驱动方法、驱动装置及显示设备。
第一方面,提供一种AR/VR显示设备的驱动方法,包括:
在每次背光插黑阶段启动时***预配置时段;
在预配置时段,将部分屏或全屏的像素行配置为预配置画面,预配置画面包括:显示黑画面、白画面或某一灰阶的画面。
第二方面,提供一种AR/VR显示设备的驱动装置,驱动装置包括预配置模块:
预配置模块,在预配置时钟信号的作用下,预配置模块向对应像素行输出驱动信号;
预配置时钟信号在每次背光插黑阶段启动时***的预配置时段有效。
第三方面,一种AR/VR显示设备,包括多个像素,像素布置在由多条扫描线和多条数据线划分的多个区域中,
扫描驱动电路包括至少两个以上级联的扫描驱动模块,各预配置像素行的扫描驱动模块,在预配置时钟信号的作用下,同时驱动对应像素;
数据驱动电路包括至少两个以上的数据驱动模块,向各预配置像素行分别提供显示预配置画面的显示数据。
根据本申请实施例提供的技术方案,通过在每次背光插黑起动阶段***预配置时段驱动部分屏或全屏像素行配置为预配置画面,能够解决传统灰阶到灰阶转换带来的响应速度慢的问题。进一步的,根据本申请的某些实施例,通过在背光插黑启动且逐行扫描开始时***预配置时段的时间复用方案,还能进一步提高响应速度。
附图说明
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述,本申请的其它特征、目的和优点将会变得更明显:
图1示出了根据本申请实施例的AR/VR显示设备的驱动方法的示例性流程图;
图2示出了根据本申请实施例的背光插黑时序的示例性示意图;
图3示出了根据本申请实施例的另一背光插黑时序的示例性示意图;
图4示出了根据本申请实施例的步骤S20的示例性流程图
图5示出了根据本申请实施例的查找表LUT的示例性示意图;
图6示出了根据本申请实施例的预配置后的查找表LUT的示例性示意图;
图7示出了根据本申请实施例的OD驱动电路的示例性结构框图;
图8示出了根据本申请实施例的预配置模块的示例性结构框图。
具体实施方式
下面结合附图和实施例对本申请作进一步的详细说明。可以理解的是,此处所描述的具体实施例仅仅用于解释相关发明,而非对该发明的限定。另外还需要说明的是,为了便于描述,附图中仅示出了与发明相关的部分。
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
请参考图1,示出了根据本申请实施例的AR/VR显示设备的驱动方法的示例性流程图。如图所示,驱动方法包括:
步骤S10:在每次背光插黑阶段启动时***预配置时段;
步骤S20:在预配置时段,将部分屏或全屏像素行配置为预配置画面,预配置画面包括:黑画面、白画面或某一灰阶的画面。
在液晶显示领域,液晶从一灰阶至另一灰阶(Gray to Gray)的响应时间比灰阶至白画面(L255)、灰阶至黑画面(L0)、白画面(L255)至灰阶、黑画面(L0)至灰阶、白画面至黑画面、黑画面至白画面的响应时间要慢的多,这成为提高响应时间的瓶颈。
基于上述特点,本申请将液晶的Gray to Gray过程转换为先预配置到L255或L0,再从L255或L0驱动到目标灰阶,以减少响应时间。因此,在插黑阶段***预配置时段将液晶从灰阶配置至L255或L0。需要说明的是,也可以预配置为指定的某一灰阶。为了说明的便利,本申请将显示目标画面前将显示屏的像素配置成预先设定的画面的过程为预配置时段,该指定画面称之为预配置画面。
在一些实施例中,在背光插黑阶段启动时***预配置时段包括:
针对部分屏或全屏的像素行的预配置,在背光插黑阶段启动且逐行扫描启动前***预配置时段。
请参考图2,示出了根据本申请实施例的背光插黑时序的示例性示意图。如图所示,一帧画面的显示过程包括背光插黑阶段①和背光打开阶段②。现有的背光插黑是在背光插黑阶段进行像素的逐行扫描,待液晶响应结束后打开背光。本申请的背光插黑阶段包括预配置时段③和扫描时段④,该预配置时段位于扫描之前,进行全屏或部分屏的像素行的预配置扫描。
在一些实施例中,在背光插黑阶段启动时***预配置时段包括:
针对部分屏的像素行的预配置,在背光插黑阶段启动且逐行扫描启动时***预配置时段,部分屏的像素属于时间上后扫描的像素。
请参考图3,示出了根据本申请实施例的另一背光插黑时序的示例性示意图。如图所示,一帧画面的显示过程包括背光插黑阶段①和背光打开阶段②。本实施例的背光插黑阶段包括预配置时段③和扫描时段④,且预配置时段③与扫描时段④在时间上复用,即扫描开始同时预配置启动。该预配置方式适用于部分屏的预配置,即部分像素行先预配置然后扫描至目标画面,另一部分直接扫描至目标画面。具体地,根据屏幕的分辨率、像素行数和液晶响应特性,在总共n行的像素的第k(k<n)行开始进行部分屏预配置到黑画面、白画面或者某一灰阶的画面,从而实现第k行至第n行的预配置时间和前面k-1行液晶扫描至目标画面的时间的复用,减小全屏响应时间。其中第k行的选取取决于各灰阶到黑画面、白画面或者某一灰阶的画面的液晶响应时间和扫描时间,保证第k行在开始扫描为目标画面时,第k行至n行的预配置结束。
请参考图4,示出了根据本申请实施例的步骤S20的示例性流程图。如图所示,在一些实施例中,步骤S20包括:
步骤S21:扫描需要预配置的像素行;
步骤S22:向预配置像素行提供预配置画面的显示数据。
在步骤S21,预配置时段向需要预配置的像素行输入的显示数据相同,因此可采用同时扫描的方案,并同时向预配置的像素行写入相应的显示数据。或者,也可采用逐行扫描方式,写入预配置画面的显示数据。
在步骤S22,根据需要向已经扫描的预配置像素输入指定的显示数据,配置成白画面或黑画面。
本申请的预配置方法,还可以应用到过压驱动(Over Driving,OD)的显示领域。OD是给将要切换至下一帧的某一灰阶的像素施加比目标灰阶电压更高或更低的过驱动灰阶电压(OD电压),使得液晶更快速的偏转,当偏转到目标灰阶角度时,打开背光,显示目标灰阶。为了得到准确的OD电压,需要将本帧的目标灰阶与上一帧灰阶做比较,通过对显示屏进行测试,得到一个OD查找表(Look-Up Table,LUT),从而得到当前灰阶到目标灰阶对应的的OD电压。图5示出了根据本申请实施例的查找表LUT的示例性示意图。由于显示屏不同区域扫描完到背光打开的时间不同、温度不同,灰阶差也不同,这就需要IC内部存储多个LUT和帧图像。占用很大的存储空间和功耗。
下面给出在OD显示场合,结合本申请的预配置方案实现减少响应时间的例子。如经过预配置的部分屏为黑画面,该预配置时段在背光插黑阶段启动且逐行扫描启动时***。之后,在预配置时段后写入目标显示数据时,向预配置的像素行写入高于目标灰阶电压或低于目标灰阶电压的灰阶电压数据。从黑画面到目标画面的扫描中,只需要前一帧为黑画面的查找表数据即可。如图6,示出了根据本申请实施例的预配置之后的查找表LUT的示例性示意图。经过预配置后,不需要同上一帧显示的灰阶做比较,大大减小了存储空间和功耗。又例如对于后半屏响应时间紧张的像素可以实现先充电到L255、L0或任一指定灰阶,然后从L255、L0或任一指定灰阶过压驱动充到目标灰阶。减少了响应时间,并简化了查找表LUT,从而节省了存储空间。
需要说明的是,在OD显示场合,预配置时段也可在背光插黑阶段启动且逐行扫描启动前***,并在预配置后写入目标显示数据时,采用灰阶过压驱动,即向预配置的像素行写入高于目标灰阶电压或低于目标灰阶电压的灰阶电压数据。
上述实施例的电路请参考图7,示出了根据本申请实施例的OD驱动电路的示例性结构框图。在实际AR/VR显示中,可在现有GOA电路设计的基础上,对需要OD过充的像素行增加ODS信号,对于双边GOA需要增加ODSL和ODSR信号,将Gate输出信号拉至所需的电压(Gate打开电压)。本实施例中,预配置可通过控制ODSL和ODSR信号来实现。因预配置的显示数据相同,可通过ODSL和ODSR信号同时向需要预配置的像素行写入显示数据。具体地,通过ODSL和ODSR信号选通第k行像素行到第n行像素的驱动电路GOA_k至GOA_n,并写入对应的显示数据。图中仅给出通过ODS信号线对部分驱动电路传输预配置信号的例子。实际应用中也可以利用独立的预配置信号线进行预配置,这样有益于对预配置和OD驱动进行分别控制。
本申请还提供一种AR/VR显示设备的驱动装置,
请参考图8示出了根据本申请实施例的AR/VR显示设备的预配置模块的示例性示意图。如图所示,一种AR/VR显示设备的驱动装置包括预配置模块100:
预配置模块100,在预配置时钟信号PRE的作用下,预配置模块100向对应像素行输出驱动信号;
预配置时钟信号PRE在每次背光插黑阶段启动时***的预配置时段有效。
预配置模块的工作原理请参考图1的说明。
在一些实施例中,部分屏或全屏的像素行的预配置,在背光插黑阶段启动且逐行扫描驱动之前***预配置时段。
在一些实施例中,部分屏的像素行的预配置,在背光插黑启动且逐行扫描启动时***预配置时段,部分屏的像素行为时间上后扫描驱动的像素行。
在一些实施例中,预配置模块100包括扫描驱动模块101和数据驱动模块102:
扫描驱动模块101用于扫描需要预配置的像素行;
数据驱动模块102用于向预配置像素行写入预配置画面的显示数据Vdata。
在一些实施例中,数据驱动模块还在所述预配置时段后写入目标显示数据时,采用灰阶过压驱动。
本申请还提供一种AR/VR显示设备。该AR/VR显示设备包括多个像素,像素布置在由多条扫描线和多条数据线划分的多个区域中,包括本申请各实施例所提供的至少一个AR/VR显示设备的驱动装置。
以上描述仅为本申请的较佳实施例以及对所运用技术原理的说明。本领域技术人员应当理解,本申请中所涉及的发明范围,并不限于上述技术特征的特定组合而成的技术方案,同时也应涵盖在不脱离所述发明构思的情况下,由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。
Claims (11)
1.一种AR/VR显示设备的驱动方法,其特征在于,包括:
在每次背光插黑阶段启动时***预配置时段;
在所述预配置时段,将部分屏或全屏的像素行配置为预配置画面,所述预配置画面包括:显示黑画面、白画面或某一灰阶的画面。
2.根据权利要求1所述的AR/VR显示设备的驱动方法,其特征在于,所述在背光插黑阶段启动时***预配置时段包括:
针对部分屏或全屏的像素行的预配置,在所述背光插黑阶段启动且逐行扫描启动前***所述预配置时段。
3.根据权利要求1所述的所述AR/VR显示设备的驱动方法,其特征在于,所述在背光插黑阶段启动时***预配置时段包括:
针对部分屏的像素行的预配置,在所述背光插黑阶段启动且逐行扫描启动时***所述预配置时段,所述部分屏的像素行属于时间上后扫描的像素。
4.根据权利要求1-3任一项所述AR/VR显示设备的驱动方法,其特征在于,所述将部分屏或全屏的像素行配置为预配置画面包括:
扫描需要预配置的像素行;
向所述预配置像素行写入预配置画面的显示数据。
5.根据权利要求4所述AR/VR显示设备的驱动方法,其特征在于,在所述预配置时段后写入目标显示数据时,采用灰阶过压驱动。
6.一种AR/VR显示设备的驱动装置,其特征在于,所述驱动装置包括预配置模块:
所述预配置模块,在预配置时钟信号的作用下,所述预配置模块向对应像素行输出驱动信号;
所述预配置时钟信号在每次背光插黑阶段启动时***的预配置时段有效。
7.根据权利要求6所述AR/VR显示设备的驱动装置,其特征在于:
部分屏或全屏的像素行的预配置,在所述背光插黑阶段启动且逐行扫描启动前***所述预配置时段。
8.根据权利要求6所述AR/VR显示设备的驱动装置,其特征在于:
部分屏的像素行的预配置,在所述背光插黑阶段启动且逐行扫描启动时***所述预配置时段,所述部分屏的像素行为时间上后扫描驱动的像素行。
9.根据权利要求6-8任一项所述AR/VR显示设备的驱动装置,其特征在于,所述预配置模块包括扫描驱动模块和数据驱动模块:
所述扫描驱动模块用于扫描需要预配置的像素行;
所述数据驱动模块用于向所述预配置像素行写入预配置画面的显示数据。
10.根据权利要求9所述AR/VR显示设备的驱动装置,其特征在于,所述数据驱动模块还用于在所述预配置时段后写入目标显示数据时,采用灰阶过压驱动。
11.一种AR/VR显示设备,包括多个像素,所述像素布置在由多条扫描线和多条数据线划分的多个区域中,其特征在于,包括至少一个如权利要求6-10任一项所述的AR/VR显示设备的驱动装置。
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