CN1068438C - 亮度加权的离散能级显示器 - Google Patents
亮度加权的离散能级显示器 Download PDFInfo
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Abstract
显示器件的结构中通常包括大量单个象素构造的重复。全彩色显示器件通常是利用多原色的原理构成的,从而形成最终所需的彩色。以前,用于各个原色的象素配置的合成度基本上是相同的。本发明指出,在象素布局中根据人眼对特定原色的视觉响应来改变各个原色的合成度。例如本文中所述,在具有红,绿和兰原色的象素配置中,基本的组成是绿原色,兰原色的成分较少。
Description
本发明涉及彩色显示装置,例如彩色计算机显示器及彩色打印机,特别是涉及在光栅彩色显示装置上显示彩色图像。
首先参照附图说明本发明的背景技术,其中的图1是惯用的CRT型显示器中单个象素的示意图。
在图1中示出了普通阴极射线管(CRT)型显示器件的单个象素1。每个象素均由红2,绿3及兰4荧光点或象素构成。这些点非常小,当其与大量的其他象素组合在一起时,观看者所看到的从个别点发射出的光就象是相应的三种颜色的混合光。通过改变各个荧光点的激发强度,就可以用一个象素元件产生宽范围的不同色彩。
在这些器件中通常是这样来显示彩色图像的,即为每个显示象素存储一个相应的值,并将该值传送到亮度转换装置以便在必要的时刻显示。为每个象素元件存储的不同数量的可能值对应着由显示装置显示的不同的彩色数量,形成使该装置能显示给定图像的分辨率。对电视信号来说,也采用类似的方式,即对应着各个特定象素的所需亮度向屏幕传送一个象素值。这种方式对熟悉本领域的人员来说是公知的。
举例来说,假定把每象素24比特的彩色显示系统分成三种色彩红、绿、兰各占8比特。这相当于红、绿、兰各有28或256个独立的亮度能级,可给出224种不同的彩色值。能显示这么多色彩的彩色显示可以近似于一种连续色调的图像,可以满足连续色调显示的所有实际显示要求。
在计算机的显示器上经常是按照特定的模式显示色彩。红、绿、兰(RGB)模式是CRT和彩色光栅显示装置中的一种通用模式。其他彩色显示模式包括常用于彩色印刷设备的青、深红、黄(CMY)。RGB模式的一个例子就是计算机显示器中通用的NTSC图片显示模式。
由于可以用模拟方式改变每个荧光点的亮度,荧光点亮度的光心就是该光点的中心,而与光的亮度无关。另外,用多原色象素元件来显示给定的色彩时,所看到的亮度光心基本上保持在同一位置。事实上,象素的位置处于其亮度的光心,因此,对显示在工作站的CRT上的所有图像来说,象素的光心可被视为一种规则的矩形栅格。
许多显示装置实际上不能显示出由24比特输入象素提供的全范围彩色。例如黑、白栅格图像显示仅可显示2种色彩黑和白,并被视为是一种双能级装置。其他彩色显示装置对每种彩色单元来说仅能显示有限数量的离散亮度能级,例如双电平铁-电液晶显示器(FLCD),屏幕上的每个亮度区域只能有两种亮度能级,即全开或全关。
如果显示装置接收到一个输入,并且该输入是在根据每个象素能显示出比实际所能显示出的能级更多的大量亮度能级的基础上产生的,则在显示的色彩中就会出现误差,该误差等于在需要显示的准确象素值与实际显示的近似值之间的差。
目前已经出现了产生离散式显示的输入信号的方法,该方法可以增加被显示在离散式彩色显示装置上的视觉色彩的数量,例如用在双能级彩色显示中。所用的方法通常被称为半调色。为了用不同的观点来解释半调色,读者可以参考MIT Press于1991年出版的Report Ulichney所著的规范教科书“Digital Halftoning”。
本发明可用于许多不同类型的离散能级显示,包括等离子显示,电发光显示及铁-电显示。本发明还可用于具有大量离散发光区域的显示,其中各个区域可发出一种或多种能级的光。
本发明的最佳实施例将会针对一种特定构造的FLCD显示器来描述。在特定的FLCD显示器结构中,每个象素由大量可以独立发光的区域构成,对数量必须做出限制和选择。一方面说,需要使特定的显示板具有最大限度的发光特性,同时要尽早简化板的结构,以便能易于制造。其他的限制还包括一个主要的要求,就是要对用于驱动可独立发光的象素区域的不透明驱动线的数量加以限制,并且还要求在尽量减少失真的条件下精确地再现所需的图像。
为了增加每个象素组的可能的亮度能级数量,已经出现了改变子象素尺寸的方法。例如在美国专利5,124,695(Green/ThornEMI)中公开了一种象素图形布局,其中就单色显示器而言采用了改变尺寸的子象素。在欧洲专利申请第361,981号(Nakagewaet.al./sharp)中也公开了变尺寸的子象素的应用。
本发明的主要目的是针对已公开的现有技术而言提供一种改进的彩色离散能级显示方式。
按照本发明的第一方面,提供了一种为具有许多象素的显示器确定一种象素布局图形的方法,每个上述象素具有多个独立发光的区域,每个上述区域被指定给多原色分量中的一种,上述方法至少包括把上述独立发光的区域按比例分配给上述原色分量的步骤,使一种色分量的发光区域与另一种色分量的发光区域的状态不同。
按照本发明的第二方面,提供了一种在离散电平彩色显示器中用于确定分配给各原色的驱动线数量的方法,上述显示器有许多象素,每个上述象素具有多个独立发光区域,每个上述区域被指定给多个原色分量之一,上述方法至少包括按比例把上述驱动线分配给上述原色的步骤,使得一种色分量的发光区域与另一种色分量的发光区域的状态不同。
按照本发明的第三方面,提供了一种具有多个独立发光区域的彩色显示装置,每个发光区域被分配给多个原色分量之一,其中按比例把上述的独立发光区域分配给上述原色分量,使一种色分量的发光区域与另一种色分量的发光区域的状态不同。
按照本发明第四方面,提供了一种彩色显示装置,其中的第一种多个独立发光区域连接到第二种多个数据驱动线,每个上述发光区域被分配给多个原色分量之一,其中按比例把上述数据驱动线分配给上述原色分量,使一种色分量的发光区域与另一种色分量的发光区域的状态不同。
以下参照附图描述本发明的最佳实施例:
图2示出了眼睛的相对感光性曲线;
图3示出了眼睛对红、绿、兰原色的相对响应曲线;
图4是未采用本发明的一种象素布局的简化平面图;
图5示出了图4所示显示器的各原色的能级;
图6示出了图4显示器的离散门限误差;
图7示出了在增加显示器的驱动线数量时对照各原色的离散门限误差;
图8是本发明最佳实施例中所用的一种象素构造的平面图;
图9示出了图8所示象素构造对各原色的能级;
图10示出了铁-电液晶显示器件的基本原理;
图11是沿图8中A-A线方向的截面图;
图12是类似于图11的截面图,该图用于说明象素的数据金属层的结构;
图13示出了图12的数据金属层结构中所用的数据金属膜;
图14是一个截面图,表示本实施例中的数据能级透明层的结构;
图15示出了采用图14所示的透明层结构的象素膜;
图16是用于表示顶部基片表层结构的截面图;
图17是用于说明底部基片上的公用能级金属层成形过程的截面图;
图18示出了图17所示公用金属层结构中所用的象素膜;
图19是一个截面图,表示底部基片上的公用能级透明层的结构;
图20是图19中的公用能级透明层结构中所用的象素膜;
图21是一个截面图,表示了底部基片上的公用能级表层的成形;
图22是从图8的A-A线方向提取的显示器一个象素的局部截面;以及
图23局部地示出了本发明的液晶显示器中大量象素的布局。
按照本发明的第一实施例,提供了一种为具有许多象素的显示器确定象素布局图形的方法,每个象素中有多个独立发光区域,每个区域被分配给多个原色分量之一,每个原色分量具有一个相应的人眼响应函数,上述方法包括,基本上按照上述相应的人眼响应函数的比例把上述独立发光区域按比例分配给上述原色分量。
按照本发明的第二实施例,提供了一种在离散能级彩色显示器中用于确定分配给每个原色的驱动线数量的方法,上述显示器有许多象素,每个象素有多个独立发光区域,每个区域被分配给多个原色分量之一,每个原色分量有一个相应的人眼响应函数,上述方法包括,基本上按照上述相应的人眼响应函数的运算比例把上述驱动线按比例分配给上述原色。
按照本发明的第三实施例,提供了一种彩色显示器,它具有多个独立发光区,各自被分配给多个原色分量之一,每个上述原色分量具有一个相应的人眼响应函数,其中基本上按照上述相应的人眼响应函数的比例把上述独立发光区域按比例分配给上述原色分量。
按照本发明的第四实施例,提供了一种彩色显示器,它具有第一种多个发光区域,并被连接到第二种多个数据驱动线,每个上述发光区域被分配给多个原色分量之一,每个上述原色分量具有一个相应的人眼响应函数,在其中基本上按照上述相应的人眼响应函数的运算比例把上述数据驱动线按比例分配给上述原色分量。
人眼对整个视觉频谱的感光性并不是相同的,眼睛对某些显示颜色比对其他显示颜色会更敏感。这可以从图2中所见,图中示出了在整个频谱中以各种波长照射的恒定亮度光线下人眼的相对平均响应。处在黄-绿区8内的感光性曲线峰值表现出人眼对黄-绿色比其他色更敏感。
通过按不同比例混合红、绿、兰三种原色可以获得几乎所有的所需颜色。这一原理与眼睛紧密相关,人们认为只有三种与红、绿、兰紧密相关的锥体或接收器,并且每个锥体具有不同的响应曲线,参见图3,人眼对三原色红5,绿6和兰7的相对感光性响应曲线和点响应曲线8一起示出。曲线是重叠的,所有的谱色都在一条曲线之下,或是还局部地处在三条曲线的其中两条之下。从图3中可见,人眼对绿色的感光性大于红或兰,并且对红的感光性大于兰。
参见图4,这里示出了第一种形式的普通显示器29的象素布局结构。在这种特定布局中,可以独立发光的区域或象素子元件的数量(即9,10,11)以及各自分配给三原色红,绿,兰的驱动线数量是按惯用方式平均分配的。因而为每种原色分配了每象素的6个子元件和2个二进制加权子元件,从而如图5所示对每个原色能获得能获得4个可能的输出能级。值得注意的是,按照图4的布局29对每种原色平均分配的方式没有考虑到人眼对每种颜色的光的加权响应。
再看图6,这里说明了一种误差15,若按4种可能的能级在离散能级的显示器上显示一个图像,就会出现这种误差,该误差包括在希望被显示的任意能级13与相应的最近的显示能级14之间的差别。显然,如果象素中可显示的能级密度数量有限,误差15就会明显增大。
可独立显示的能级数量可以随着驱动线数量的变化而按指数增多。图7示出了把用于每种原色的驱动线数量增加到3条时的情况。此时,当一种原色的各显示区域的照度具有二进制关系时,可能的照度能级数量就增加到8个。此时能明显地减小最大误差16。
本发明的最佳实施例可以把人眼所见的最大误差减至最小,其手段是把人眼的加权响应加到分配给每种原色的能级量值上,并由此加到分配给每种原色的驱动线数量上。
参见图8,其中示出了本发明的最佳实施例,它用于显示器的象素布局,该显示器具有6个驱动线,分成2个红驱动线18、19,3个绿驱动线20,21,22,及1个兰驱动线23。这种象素布局适合用于包括FLCD显示器在内的多种不同类型的显示器。
对绿色最敏感的人眼由于绿色具有比另外两种原色更容易离散的特性而产生误差,对兰色来说,误差比较小,因为人眼对兰色不象对绿或红色那样敏感。因此在本实施例中为绿色提供了较多的驱动线,为红色提供了较少的驱动线,而为兰色提供的驱动线更少。
在本实施例中,绿色占有较多的子象素,因而在每象素中有较多的离散能级。这样做具有降低绿色门限误差的效果。如上所述,图7表示出了最大误差16。然而,为了增加绿色的能级数量,就要减少兰色的能级数量,导致兰色误差增大。然而,令人惊奇的是兰色能级数量的减少对显示图像的整体效果并没有很明显的影响,这是因为人眼对兰色不象对绿色那样敏感。
为了确定被分配给每种原色的地址线数量,可以根据人眼对各种颜色的响应比例做出近似的选择。
另外还可以对分配做出进一步的定量测量,即检测出亮度加权门限误差,并推导出半调色失真的公式,它是一个象素中不同颜色之间位数分配的函数。
为了推导这一公式,做以下假设。假设人眼能觉察到的由于一种颜色图像的半色调导致的失真与被显示的中间密度能级附近的变化成比例。并假设对全色图像所觉察到的失真是对图像的三种颜色分量所觉察的失真的总和,并且每种颜色所产生的失真与其他颜色的失真是彼此独立的,还进一步假设对相同照度的失真来说不同的原色会给出不同的视觉失真。假设所有可能的照度均以同一频率出现,则一个象素的质量测量被假设为整个彩色照度组合范围内的平均失真。
从这些假设出发,首先可以推导出一个象素的平均视觉失真:
σ2 视觉=一个象素的平均视觉失真
=W2 红σ2 平均红+W2 绿σ2 平均绿+W2 兰σ2 平均兰(式1)其中的W色=该颜色的干扰对视觉干扰的影响
加权W色可以直接根据各种颜色对亮度的影响来选择,也可以用人眼对颜色的不同的低通特性来表示。以下的亮度公式表示在National Television Systems Committee(NTSC)标准中采用的电视三原色的近似加权,该式表示出了1流明白光的成分:
1lm白光=0.30lm红+0.59lm绿+0.11lm兰 (式3)
这些数值仅对NTSC原色和白光是准确的,对大多数新式的RGB监视器来说却不够准确。由于加权的变化对各种新式RGB器件来说都是比较小的,在以下的计算中还使用上述的加权值。
下一步是要推导出σ2 色的表达式,它是象素参数的函数。
定义B色=分配给该颜色的位数 (式4)
假设该象素中包含二进制加权的子象素,子象素各自可以独立发光,而该象素可显示的可能的照度能级数量随着位数或驱动线数而按指数地增加,并且相邻的可能照度能级之间的差随着位数按指数减小。因此,如果L色=能级数量=2B并且
则σ2 色是用于该色的位数的函数;因此更准确地应写成σ2 色(B色)。假设多能级象素中相邻颜色间的干扰除了一个定标系数h色之外与一个单能级象素的情况相同,就有可能写成:
单一照度的半色调干扰为
σ2 色(1,I)=∑(照度的频率)(照度-照度中间值)2 (式8)
对照度I来说,合理的半色调算法是应在频率I接通该象素,而在频率(1-I)关断该象素。假定是这种情况,照度中间值就应等于I,因此:
σ2 色(1,I)=I(1-I)2+(1-I)(0-I)2
=I(1-I) (式9)
如图4所示的二进制加权布局的象素对红、绿、兰采用相等的加权,每种颜色有2个子象素。把B色=2和前述的加权代入公式10,结果为
σ2 视觉=0.00834 (式13)
在最佳实施例中,每种原色具有不同数量的子象素,其中B红=2,B绿=3,而B兰=1,其加权值也是一样。取代的结果是:
σ2 视觉=0.00487 (式14)
这样就减少了象素的平均视觉失真。
熟悉本技术领域的人都知道,根据制造技术的不同,采用手性碟状结构的(chiral smectic)液晶的显示器或是FLCD显示器等等离散能级显示器的结构可以有很多种形式。
参见图10,其中说明了一种铁-电液晶显示器件(FLCD)40的基本工作原理,它包括一对电极板41,42,通常是由涂有透明电极的玻璃基片构成,并附带有电源接头和滤光片。一个具有分子层43的液晶层被设在电极板之间并与之垂直或近似垂直。采用一种手性纯净的(chiral smectic)C相或H相液晶,其厚度足够薄(例如0.5-5微米),从而使手性纯净的相具有螺纹特性。
当超过某一门限的电场E(或-E)44被加到上、下基片41,42之间时,液晶分子43按照电场的方向被定向。液晶分子具有延长的形状,并在其长轴和短轴之间呈现出折射的各向异性现象。因此,若把铁-电液晶器件40夹在安装在基片41,42上的一对横向起偏器(未示出)之间,就可以构成一个液晶光调制器件。
在施加超过某一门限的电场44时,液晶分子被排列成第一极化定向状态45。进而,在施加反向电场(-E)时,液晶分子被排列成第二极化定向状态46。只要所施加的电场在反方向上不超过某一门限,这种定向状态就会一直保持下去。
在显示器制作中所用的制造方法与制作或装配超大规模集成电路器件(VLSI)所用的方法非常相似,并且这种器件的制作技术已经很成熟了。
FLCD显示器的制作是从两个玻璃基片开始。从图11谈起,来说明顶部玻璃基片42的制作。
滤色器(片)
在对基片42表面进行彻底清洗之后,可加上一种铝螫合连接剂(未示出),以确保后来的玻璃层与玻璃基片能适当地粘合。
然后采用旋转涂层处理施加一个包含一种原色模的1.5μm的感光聚酰胺涂层,第一次采用红色。为了除去残余的溶剂,在80℃下对聚酰胺进行大约10分钟的预烘干。然后采用与待暴光的红色滤色片51的区域相对应的一个象素掩模使感光聚酰胺暴光。对聚酰胺层如此处理之后,在基片42上留下各个象素的红色滤色片部分51。然后对第一种颜色的滤色片部分51进行后期烘干,以便在对绿滤色片52和兰滤色片53进行重复处理之前形成稳定的结构。重要的一点是,按照从图8中的A-A线方向取得的截面图11中所示,绿滤色片52比兰滤色片53要大。最好在相邻的滤色片部分之间设置一个屏蔽件,例如不透明的金属件(未示出),以便屏蔽通过的光。
数据能级金属层
参见图12,显示器件制作的下一步最好是包括驱动线18-23和环绕部分30-33的数据能级金属层。这一金属层被直接定位在滤色片之上。
在使用金属层制作器件时,钼(Mo)是用于有关电路的构形的最佳材料,因为其具有优异的构图性能和平面性能。
在金属层的构图中也可以选用铝。铝的电阻率在25℃时为0.027μΩm,而钼的电阻率在25℃时为0.0547μΩm。因此,铝制金属层的导电性几乎是钼制金属层的二倍。然而,由于铝和其他用于生产显示器件的物质在不同的热膨胀过程中要释放出应力,其结果会使铝形成小丘或尖头,这会使显示器件出现严重的缺陷,这一问题阻碍了铝的应用。
熟悉半导体电路装配技术的人都知道如何使金属层定位的方法,以下说明这种定位方法的一个例子。
首先在基片表面溅射一层0.3μm的铝和0.5%铜(AlCu)合金。铝最好能从平面上升高,达到0.09μm的表面高度差。然后通过旋转涂覆一种六甲基乙硅烷(HMDS)的单层为溅射的铝层提供感光粘合剂。然后在备好的层的顶上旋转涂覆1μm的正光刻胶,例如AZ1370。然后用红外线炉在90℃下对光刻胶进行3分钟的预烘干。然后用图13所示的象素掩模使光刻胶暴光,掩模上包括对应数据金属层的各个区域的垂直条纹18-23和环绕部分30-33。以35mI/cm2使光刻胶对金属掩模暴光。
然后可以在23℃下把光刻胶在25%的水溶液AZ-351和40%的水溶液AZ-311中处理50秒。此后在光刻胶被划上条纹之前进行检查,并且对任何超出公差的板进行排除或再加工。然后可以在150℃下对光刻胶进行后期烘干,再把溅射的铝在由80%磷酸,5%硝酸,5%醋酸和10%水构成的混合溶液中在40℃下进行2分钟的湿法蚀刻。
最后给剩余的光刻胶划上条纹,使用一种低酚有机剥离剂,例如Shipley清除剂“1112A”,在底部基片42上留下数据能级金属层。
数据能级透明电极层
参见图14,下一个要定位的层是包括各部分60-63的数据能级透明电极层,部分60构成红色透明电极,部分61,62构成二进制加权的绿色透明电极,部分63构成兰色透明电极。
这一层是通过在基片42上加上一个透明电极未来成的,例如一种ITO(铟锡氧化物)。
数据能级介电层的形成过程包括在加氧的环境中溅射铟和锡,初步形成0.07μm的ITO层。然后再次旋转涂覆一个HMDS的单层,准备好一个ITO层。在该层的顶上旋转涂覆1μm的正光刻胶层,例如AZ1370。然后可对光刻胶进行预烘干,除去溶剂,用红外线炉按90℃处理大约3分钟。
然后以大约35mI/cm2的能量使光刻胶对图15所示的数据能级电极掩模65暴光。在25%的水溶液AZ-351和40%的水溶液AZ-311中在23℃下将光刻胶处理50秒。随后以120℃对光刻胶做后期烘干。然后对ITO进行湿法蚀刻并用低酚有机剥离剂例如Shipley清除剂“1112A”给剩余的光刻胶划上条纹,留下连接到数据金属层的数据能级透明电极层。
现参见图16,制作顶部基片的最后一步是加上表层67。该表层包括溅射0.1μm的钽的五氧化物绝缘层,加上0.1μm的硅钛氧化物,旋转涂覆一层0.2μm的聚酰胺,然后进行后期烘干,并对该表面进行单轴对齐处理,例如采用磨擦的方法,以便使液晶分子对齐。
第二基片41(图10)基本上按照对第一基片的相同方式处理,仅是要使用不同的掩模。
参见图17,在底部基片41上首先形成公用能级金属层24,使用的技术与上述针对图12的数据能级金属层所述的方法相同。在制作公用金属层24时所用的象素模如图18所示。
再看图19,下一步是制作底部基片41的公用能级透明层25,它由铟锡氧化物或类似物质构成,按照参照图12概括的过程进行。用于形成公用能级透明层25的掩模如图20所示。最后参见图21,采用上述参照图16概述的技术方案在公用基片上形成公用能级表层68。
参见图22,图中示出了显示器件40最终的结构形式,它包括顶部基片42和底部基片41,两个基片各自的表面覆盖有一个偏振片70,71,按照所需的驱动要求,两个偏振片的极化轴可以彼此成直角或彼此平行。两个基片41,42由1.5μm的玻璃球体73分开并保持稳定的平衡,玻璃球体73的喷雾密度大约为每平方毫米100个球体。进而用粘合滴剂74把基片固定到一起。粘合剂滴74和球体73的作用是保持显示板40的静态平衡,使两个基片41,42之间的夹层厚度为1.5μm左右,即球体73的直径。在两个基片之间放入液晶体(未示出),构成铁-电液晶器件。
图23示意性地给出了由公用金属层24和公用透明层25构成的公用层之间重叠形式的局部平面图。图中还示出了由数据金属层26和数据透明层27构成的数据能级层。每列象素76包括四条相应的驱动线,第一驱动线18被用于驱动一个四单位区域的红色电极,第二驱动线19被用于驱动一个二单位区域红色电极。驱动线20被用于驱动一个四单位区域绿色电极,驱动线21驱动一个二单位区域绿色电极,驱动线22驱动一个单位区域绿色电极。最后,驱动线23被用于驱动一个八单位兰色电极区域。公用电极按行向设置,按一般的方式对象素寻址。
上述实施例的说明是关于一种具有六个驱动线及相应的透明区域的象素而言的。本领域中的熟练人员显然可以运用这种原理来分配子象素,根据人眼的加权响应实现驱动线和透明电极区域的不同组合。
另外,以上仅描述了本发明的一个实施例,所采用的是一种具有特定局限性的铁-电液晶显示器件。熟悉本领域的人员显然可以将本发明应用于其他类型的液晶显示器,并且实现其他形式的离散能级显示。例如,本发明可以很容易地被用于等离子体显示器以及采用其他形式原色系统的显示器。此外,本发明对二进制加权的透明电极元件没有任何限制。
Claims (10)
1.一种用于确定分配给离散能级彩色显示器的每种原色的驱动线数量的方法,上述显示器有许多象素,每个象素由多个独立发光区域形成,每个上述区域被分配给红色(R)、绿色(G)或蓝色(B)原色分量,其特征是,上述方法至少包括把上述驱动线分配给上述原色分量,使得对每一个象素,绿色(G)分量的离散能级的数量超过红色(R)分量的离散能级的数量,并且红色〔R〕分量的离散能级的数量超过蓝色(B)分量的离散能级数量。
2.如权利要求1所述的方法,其特征是对应于每个色分量的发光区域数量与至少一个其它色分量的发光区域数量不同。
3.如权利要求1所述的方法,其特征是,每个上述原色分量具有对应的人眼响应函数,并且上述分配步骤包括基本上按照上述对应的人眼响应函数的运算比例把上述驱动线按比例分配给上述原色。
4.如权利要求1、2或3中任意一项所述的方法,其特征是上述显示器是一种离散能级铁-电液晶显示器。
5.如权利要求3所述的方法,其特征是每个原色分量的发光区域基本上采用二进制加权。
6.如权利要求3所述的方法,其特征是,独立发光的红色区域的数量为2,独立发光的绿色区域的数量为3,而独立发光的蓝色区域的数量为1。
7.一种彩色显示装置,具有第一多个独立发光区域,该区域连接到第二多个数据驱动线,每个上述发光区域被分配给红(R)、绿(G)或蓝(B)原色分量,其特征是,对每一个象素,所述数据驱动线被分配给所述原色分量,使得彩色显示装置的绿色(G)分量的离散能级的数量超过红色(R)分量的离散能级的数量,并且红色〔R〕分量的离散能级的数量超过蓝色(B)分量的离散能级数量。
8.如权利要求7所述的彩色显示装置,其特征是每一色分量的发光区域数量与至少一个其他色分量的发光区域数量不同。
9.如权利要求7所述的彩色显示装置,其特征是每个上述原色分量具有对应的人眼响应函数,并且基本上按照上述对应的人眼响应函数的运算比例把上述数据驱动线按比例分配给上述原色分量。
10.一种用于确定分配给离散能级彩色显示器的每种原色的驱动线数量的方法,上述显示器有许多象素,每个象素具有多个独立发光区域,每个上述区域被分配给包括在红色、绿色和蓝色的组中的多个原色分量之一,其特征是,上述方法至少包括按一定比例把上述驱动线分配给上述原色的步骤,使得一个色分量的发光区域的状态与另一个彩色分量的发光区域的状态不同,其中每个上述原色分量具有对应的人眼响应函数,并且基本上按照上述对应的人眼响应函数的运算比例把上述数据驱动线按比例分配给上述原色分量,其中上述原色分量是红,绿和蓝,并且红色驱动线的数量为2,绿色驱动线的数量为3,而蓝色驱动线的数量为1。
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AUPM4409 | 1994-03-11 | ||
AUPM4409A AUPM440994A0 (en) | 1994-03-11 | 1994-03-11 | A luminance weighted discrete level display |
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CN1111361A CN1111361A (zh) | 1995-11-08 |
CN1068438C true CN1068438C (zh) | 2001-07-11 |
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CN95102693A Expired - Fee Related CN1068438C (zh) | 1994-03-11 | 1995-03-11 | 亮度加权的离散能级显示器 |
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US (1) | US6008868A (zh) |
EP (1) | EP0671650B1 (zh) |
JP (1) | JP3136070B2 (zh) |
KR (1) | KR100231125B1 (zh) |
CN (1) | CN1068438C (zh) |
AU (1) | AUPM440994A0 (zh) |
CA (1) | CA2144479C (zh) |
DE (1) | DE69528300T2 (zh) |
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1994
- 1994-03-11 AU AUPM4409A patent/AUPM440994A0/en not_active Abandoned
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1995
- 1995-03-10 KR KR1019950004889A patent/KR100231125B1/ko not_active IP Right Cessation
- 1995-03-11 CN CN95102693A patent/CN1068438C/zh not_active Expired - Fee Related
- 1995-03-13 DE DE69528300T patent/DE69528300T2/de not_active Expired - Fee Related
- 1995-03-13 US US08/402,505 patent/US6008868A/en not_active Expired - Fee Related
- 1995-03-13 JP JP07079345A patent/JP3136070B2/ja not_active Expired - Fee Related
- 1995-03-13 EP EP95301620A patent/EP0671650B1/en not_active Expired - Lifetime
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Also Published As
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CN1111361A (zh) | 1995-11-08 |
KR950034041A (ko) | 1995-12-26 |
DE69528300T2 (de) | 2003-07-31 |
JPH0850288A (ja) | 1996-02-20 |
EP0671650B1 (en) | 2002-09-25 |
AUPM440994A0 (en) | 1994-04-14 |
JP3136070B2 (ja) | 2001-02-19 |
US6008868A (en) | 1999-12-28 |
DE69528300D1 (de) | 2002-10-31 |
EP0671650A2 (en) | 1995-09-13 |
EP0671650A3 (en) | 1996-01-10 |
CA2144479C (en) | 2001-11-27 |
KR100231125B1 (ko) | 1999-11-15 |
CA2144479A1 (en) | 1995-09-12 |
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