Go homepage(回首页) Upload pictures (上传图片) Write articles (发文字帖)
The author:(作者)归海一刀published in(发表于) 2014/4/29 9:23:23 4 k has new tricks： mysterious pixel technology analysis，
4?k?has?new?tricks:?mysterious?times-RGBW?pixel?technology?resolved?arranged,?4K-IT?information?4?k?has?new?tricks:?mysterious?pixel?technology?analysis
In?described?a?displayed?screen?Shi,?we?will?said?it?has?how?many?pixel,?is?usually?by?said?of?resolution?of?nature?meaning,?like?1080P?of?resolution,?on?has?1920x1080?a?pixel,?pixel?of?number?more?more,?picture?by?more?fine,?many?people?are?understanding?this?sense,?but?many?friends?are?not?knows,?a?independent?of?pixel,?actually?is?by?three?a?times?pixel?to?constitute?of,?is?red,?and?green?and?blue?three?species?times?pixel,?its?tie?formed?has?we?see?of?colorful?picture,?However?RGB?pixel?arrangement?is?the?most?common?form,?actually?studies?of?pixels,?far?more?than?that.
Most?representative?is?the?Pentile?arranged,?consumers?began?to?recognize?the?arrangement?of?pixels?from?this?arrangement,?this?arrangement?is?a?United?States?pixel?arrangement?of?Clairvoyant?company?developed?and?patented?technologies,?Samsung?in?2008?signed?an?agreement?with?the?company,?ultimately?arranged?in?this?way?to?the?famous?AMOLED?screen,?via?Galaxsy?mobile?phones,?to?consumers?around?the?world?face,?Pentile?Clairvoyant?company?there?is?a?solution,?that?is,?this?time?we?focused?on?the?RGBW?arranged.
Different?arrangement?of?pixels
If?said?Pentile?arranged?of?a?programme?effective?of?settlement?has?AMOLED?screen?of?life?problem,?so?RGBW?arranged?is?is?can?upgrade?picture?of?delicate?performance,?its?not?through?changes?drive?to?upgrade?picture?of?pixel,?but?change?times?pixel?of?arranged?way,?thereby?reached?also?of?purpose?,?such?of?practices?has?many?advantages,?also?has?must?of?defects,?zhihou?we?will?detailed?of?comes.
Prior?to?turning?to?the?specific?technical?details,?we?also?have?questions,?this?arrangement?is?not?new?research,?and?4K?links?up?with?lately,?why?are?Korean?companies?at?this?time?brought?the?arranged?technology??With?these?questions,?we?walked?into?the?world?of?pixels,?arranged?in?RGBW?charm.
Against?the?new?arrangement?can?reduce?costs
Recently?resolution?leaps,?1080P?of?equipment?has?rendering?behind?of?State,?phone?Shang?2K?screen,?TV?Shang?4K?screen,?this?zhihou?of?hero?is?drive?technology?of?development,?originally?of?non-crystal?silicon?TFT?drive?cannot?support?high?of?pixel,?now?is?is?in?LTPS?and?IGZO?drive?of?support?Xia,?also?size?of?screen?can?has?more?of?pixel,?certainly?these?pixel?are?is?has?full?of?three?a?times?pixel?arranged?of,?its?can?achieved?4?k?level?of?picture?performance,?Subtle?effects?become?the?main?reason?customers?upgrade?equipment.
If?note?observation,?we?on?will?found?LTPS?drive?technology?main?has?Japan,?and?Taiwan?and?Korea?dominated,?IGZO?Panel?is?is?main?comes?from?Japan?sharp,?Taiwan?and?Japan?are?is?high?resolution?of?beneficiaries,?single?from?TV?industry?see,?day?Department?TV?in?recent?years?of?development?momentum?and?bad,?cost?high?makes?Japan?Enterprise?difficult?in?price?aspects?and?Han?Department?and?mainland?of?manufacturers?(Panel?many?from?Taiwan)?competition,?led?to?day?Department?displayed?enterprise?are?is?appeared?high?losses.
But?in?high?resolution?of?needs?appeared?Hou,?day?Department?displayed?Enterprise?Active?of?expansion?high?resolution?of?market,?especially?small?screen?of?market,?provides?phone?and?Tablet?by?needs?of?Panel,?fast?of?improve?has?margins,?Taiwan?Department?of?Panel?Enterprise?is?seize?research,?4K?of?Panel?began?into?to?mainland?of?market,?and?Han?Department?enterprise?is?is?will?is?big?of?energy?put?in?has?OLED?Panel?of?research?Shang,?time?no?with?high?resolution?of?tide,?while?Han?Department?enterprise?also?can?provides?has?high?resolution?of?Panel,?But?it?can?only?be?great.
In?RGBW?arrangement?can?reduce?costs,?while?increasing?the?screen?resolution?of?the?case,?the?Korean?companies,?won′t?miss?this?opportunity?pulled?one?back?for?city.
Advantages?a?white?pixel?is?the?key
RGBW?arrange?why?can?increase?the?number?of?pixels,?what?are?the?advantages?of?doing?it?
Traditional?pixel?by?r?(red),?g?(green)?and?b?(blue).?1920x1080?FHD?Panel?pixels,?and?each?pixel?is?composed?of?three?pixels?(r,?g,?b),?so?that?a?total?of?6.2?million?colors.?3840x2160?4K?Panel?resolution,?meaning?it?has?24.9?million?colors?(3840x2160?types?of?pixel,?each?pixel?consists?of?three?pixels?of?seed).?UHD?(4K)?is?the?resolution?of?the?FHD?(2Kx1K)?four?times.
Different?arrangement?of?RGBW?pixel
In?RGBW?Panel?in?South?Korea,?one?solution?is?for?each?consisting?of?pixels?of?the?two?kinds?of?pixels?(RG?or?BW).?This?level?of?resolution?1920xRGBWx2160?of?the?Panel,?it?says?pixel′s?small?size,?vertical?alignment,?many?times?the?number?of?pixels.?An?RGBW?arranged?way,?two?pixels?with?5?megapixels,?in?panels?of?the?same?size,?number?of?pixels?horizontally?by?a?factor?of?1.5?times?times?the?vertical?alignment?for?twice?times,?and?with?four?times?the?pixel,?times?the?number?of?pixels?and?real?4K?Panel?is?comparable,?which?is?called?a?G+UHD?Panel.
Arrangement?of?RGBW?pixel?graphic
Fundamental?changes?in?pixel?have?two?points,?the?first?is?to?join?the?white?pixels,?the?second?is?the?r?(red),?g?(green)?and?b?(blue)?pixels?become?smaller?in?size,?also?increased?and?the?advantages?of?doing?so?are:
First?is?white?pixel?of?joined,?makes?picture?of?brightness?more?high,?such?on?not?needs?like?originally?of?4K?products?as,?increased?LED?backlight?of?number,?because?according?to?originally?of?arranged?way,?pixel?more?has,?picture?of?translucent?rate?also?low?has,?only?increased?backlight?of?brightness?to?maintained?originally?of?brightness,?thereby?caused?products?of?cost?improve,?and?appearance?design?also?comparison?of?heavy.
Second?was?driven?to?simplify,?reduce?costs,?and?RGBW?Panel?reduces?the?cost?of?drive?IC?and?sequencers.?UHD?in?the?traditional?Panel,?because?the?child?of?pixels?more?driven?timing?controller?IC?and?therefore?needs?to?be?strong?enough?to?push?the?Panel?operation.?RGBW?Panel?of?pixels?less?driven?timing?controller?IC?and?costs?can?be?reduced.
Details?of?choice?consumer?attitudes
There?are?of?course?advantages?and?disadvantages,?although?at?times?the?number?of?pixels?the?RGBW?Panel?arrangement?comparable?to?true?RGB?on?the?4K?Panel,?but?because?of?the?influence?of?white?pixels,?the?purity?of?colours?will?be?somehow?affected,?which?we?commonly?referred?to?as?red,?not?red?enough,?blue?not?blue?enough,?such?panels?for?professional?users,?is?a?change?of?factors?to?consider.
Second,?although?the?increased?number?of?pixels,?but?pixel?independence?posed?by?the?number?of?pixels?is?still?cannot?be?compared?with?real?4K?Panel,?so?that?in?the?delicate?part?of?the?picture,?there?are?some?flaws,?which?is?so?far,?the?biggest?disadvantage?of?RGBW?Panel,?but?this?disadvantage?is?seen?with?the?naked?eye?is?really?obvious,?or?is?debatable.
We?are?knows?currently?while?4K?equipment?development?of?speed?soon,?but?around?products?is?and?no?with?Shang,?regardless?of?is?tablets?source?also?is?play?equipment,?are?no?too?good?of?support,?this?let?4K?monitor?products?meaningless?in?a?of?advantage,?is?played?not?out,?play?with?1080P?of?picture,?again?powerful?of?resolution?hungry?reflected?not?out,?RGBW?in?also?of?size?Shang,?indeed?and?traditional?of?4K?Panel?has?gap,?but?still?than?traditional?1080P?to?clear.
For?large?distance?to?watch?TV,?it?products,?RGBW?resolution?increase?is?also?very?obvious,?though?not?really?4K,?but?if?the?price?is?right,?consumers?won′t?buy?it?not?necessarily,?technical?in-depth?user?research?is?not,?after?all,?price?is?OK,?display?OK.
Korea?strategy?used?to?let?the?user?moves
RGBW?Panel?is?not?is?a?fresh?of?things,?its?early?in?2004?years?around?on?began?appeared,?its?initially?of?purpose?not?used?to?upgrade?resolution?of,?main?is?added?white?of?pixel?can?let?picture?of?brightness?more?high,?is?can?achieved?equal?of?energy,?brightness?performance?can?more?strong,?or?uses?lower?of?power?achieved?equal?picture?of?brightness,?so?is?for?mobile?area?of?displayed?technology,?Sony?zhiqian?also?had?pushed?had?such?of?phone.
Is?WhiteMagic?essence?of?RGBW?pixel?arrangement
This?Han?Department?enterprise?with?this?arranged?to?upgrade?picture?of?delicate?degree,?is?a?is?cleverly?of?ideas,?mobile?equipment?screen?small,?this?arranged?cannot?in?small?screen?Shang?upgrade?resolution?performance,?for?50?inches?of?big?size?panel?for,?pixel?of?volume?narrowed?for?original?of?half,?plus?white?pixel?of?increased,?picture?of?pixel?number?will?rendering?sharp?of?rose,?thereby?in?times?pixel?Shang?reached?must?of?number,?achieved?has?4K?of?standard,?certainly?on?actual?of?independent?pixel?for,?its?still?cannot?and?real?of?4K?Panel?compared?to.
RGBW?can?change?the?pattern?of?4K?
May?some?user?will?said?this?is?a?Jerry,?but?its?also?indeed?has?brightness?more?high,?more?energy?and?cost?of?advantage,?can?let?more?fine?of?Panel?entered?households,?as?its?color?not?pure?of?disadvantages?can?uses?color?processing?technology?to?strengthened,?delicate?of?effect?Shang?while?cannot?through?software?to?cover,?but?its?after?all?than?1080P?of?Panel?to?clearly,?especially?second?species?RGBW?arranged?programme,?in?independent?pixel?Shang,?also?almost?close?to?has?4K?of?level,?also?is?can?meet?currently?of?using?needs.
There?is?already?news,?Skyworth,?KONKA?and?CHANGHONG?would?use?RGBWGreen?or?G+UHD?Panel,?and?will?be?held?in?2014?into?mass?production?in?the?second?quarter,?its?success?also?depends?on?a?consumer′s?eyes,?after?all,?the?inspection?technology?market?is?the?only?truth,?as?for?whether?it?is?technically?a?shrink,?is?not?the?key?to?success?of?a?technology.
4K又有新花样：神秘次像素技术全解析?-?RGBW排列,4K?-?IT资讯4K又有新花样：神秘次像素技术全解析
在形容一个显示屏幕时，我们会说它有多少像素，也就是通常所说的分辨率的本质意义，比如1080P的分辨率，就拥有1920×1080个像素，像素的数量越多，画面经越精细，很多人都了解这个道理，不过很多朋友都不知道，一个独立的像素，其实是由三个次像素来构成的，也就是红色、绿色以及蓝色三种次像素，其配合形成了我们见到的多彩画面，不过RGB的次像素排列只是最常见的形式，实际上对于次像素的研究，远不止于此。
最有代表性的就是Pentile排列，消费者从这种排列开始认识到次像素排列的学问，这种排列是美国的Clairvoyant公司研制并申请专利的次像素排列技术，三星于2008元与该公司签订协议，最终将这种排列的方式用到了著名的AMOLED屏幕中，通过Galaxsy手机，来到了全世界消费者的面前，其实Clairvoyant公司的Pentile还有一种解决方案，也就是这次我们重点叙述的RGBW排列。
不同的次像素排列方式
如果说Pentile排列的一种方案有效的解决了AMOLED屏幕的寿命问题，那么RGBW排列则是可以提升画面的细腻表现，其不是通过改动驱动来提升画面的像素，而是改变次像素的排列方式，从而达到同样的目的，这样的做法有很多优点，也有一定的缺陷，之后我们都会详细的谈到。
谈到具体的技术细节之前，我们也会有疑问，这种排列并非是新的研究成果，最近却和4K联系了起来，为什么韩系企业会在这个时候提起这种排列技术呢？带着这些疑问，我们一起走进次像素的世界吧，看看RGBW排列的魅力。
对抗台系新排列可减低成本
近期分辨率突飞猛进，1080P的设备已经呈现落伍的状态，手机上2K屏幕，电视上4K屏幕，这之后的功臣是驱动技术的发展，原本的非晶硅TFT驱动无法支持过高的像素，如今则是在LTPS以及IGZO驱动的支持下，同样尺寸的屏幕可以具有更多的像素，当然这些像素都是具有完整的三个次像素排列的，其可以实现4K水平的画面表现，精细的效果成为消费者升级设备的主要原因。
如果注意观察，我们就会发现LTPS驱动技术主要有日本、台湾以及韩国把持，IGZO面板则是主要来源于日本夏普，台湾以及日本都是高分辨率的受益者，单从电视行业来看，日系电视近年来的发展势头并不好，成本居高不下使得日本企业难以在价格方面和韩系以及内地的厂商（面板很多来自台湾）竞争，导致日系显示企业都是出现高额亏损。
不过在高分辨率的需求出现后，日系显示企业积极的拓展高分辨率的市场，尤其是小屏幕的市场，提供手机以及平板所需要的面板，快速的提高了利润率，台系的面板企业也是抓紧研发，4K的面板开始打入到内地的市场，而韩系企业则是将很大的精力放在了OLED面板的研究上，一时间没有跟上高分辨率的大潮，虽然韩系企业也能提供了高分辨率的面板，但却只能自产自销了。
因此在看到RGBW排列可以降低成本，同时提升画面分辨率的情况下，韩系的企业自然不会放过这个扳回一城的机会。
优势明显白色次像素是关键
那么RGBW排列为什么可以提升像素的数量，这样做的优势又是什么呢？
传统的像素由R(红色)、G(绿色)和B(蓝色)构成。FHD面板的像素为1920×1080，而每种像素由三种子像素组成(R,?G,?B)，因此它一共有620万种颜色。而4K面板的分辨率有3840×2160，这表示它具有2490万种颜色(3840×2160种像素，每种像素由三种子像素构成)。因此UHD(4K)的分辨率是FHD(2K×1K)的四倍。
不同的RGBW像素排列方式
在韩系的RGBW面板中，一种方案是每种画素由两种子画素构成(RG或BW)。因此这种面板的分辨率有1920×RGBW×2160的水平，也就说次像素的体积小了，竖向的排列上，次像素的数量也就更多了。还有一种RGBW排列的方式，两个像素拥有5个次像素，这样在同样尺寸的面板上，横向的像素数量为原来的1.5倍，竖向排列上则为原来的2倍，加上拥有四种次像素，次像素的数量就可以和真正的4K面板媲美，这种方案称为G+UHD面板。
RGBW次像素排列方式的图解
因此次像素的根本变化有两点，第一就是加入了白色的次像素，第二则是原本的R(红色)、G(绿色)和B(蓝色)次像素体积变小了，数量也增多了，这样做的优势有几个：
第一就是白色像素的加入，使得画面的亮度更高，这样就不需要像原本的4K产品一样，增加LED背光的数量，因为按照原本的排列方式，像素多了，画面的透光率也低了，只有增加背光的亮度才能维持原本的亮度，从而造成产品的成本提高，并且外观设计也比较的厚重。
第二则是驱动的简化，降低了成本，RGBW面板降低了驱动IC和时序控制器的成本。在传统的UHD面板中，由于子画素较多，因此需要足够强大的驱动IC和时序控制器来推动面板运作。但RGBW面板的子画素较少，因此驱动IC和时序控制器的成本可以得到降低。
细节取舍还看消费者的态度
当然有优势就有劣势，RGBW面板虽然在次像素的数量上可以媲美真正的RGB排列4K面板，但是由于有白色像素的影响，画面色彩的纯度会受到一定的影响，也就是我们通常所说的红色不够红，蓝色不够蓝的情况，这样的面板对于专业用户来说，是一个需要考虑的变化因素。
第二就是虽然次像素的数量增加了，但是次像素所构成的独立像素数量却仍旧不能和真正的4K面板相比，因此在画面的细腻程度上，也是会有一定的瑕疵，这也是目前看来，RGBW面板的最大劣势，但是这种劣势用肉眼观察是否真的明显，还是值得商榷的。
我们都知道目前虽然4K设备发展的速度很快，但是周边产品却并没有跟上，无论是片源还是播放设备，都没有太好的支持，这让4K显示器产品空有一身的优势，却发挥不出来，播放着1080P的画面，再强大的分辨率饿体现不出来，RGBW在同样的尺寸上，的确和传统的4K面板有差距，但是依旧比传统1080P要清晰。
对于电视这样的大尺寸远距离观看的产品，RGBW的分辨率提升，也是非常的明显的，虽然不是真真正正的4K，但是如果价格合适，消费者未必就不会买账，毕竟对技术深入研究的用户并不多，价格OK，显示效果OK就可以了。
韩系策略用价格让用户动心
RGBW面板并非是一个新鲜的事物，其早在2004年左右就开始出现，其最初的目的不是用来提升分辨率的，主要是添加白色的像素可以让画面的亮度更高，也就是可以实现同等的能耗，亮度表现可以更强，或者利用较低的电量实现同等画面的亮度，因此是适合移动领域的显示技术，索尼之前也曾经推过这样的手机。
WhiteMagic本质就是RGBW次像素排列
此次韩系企业用这种排列来提升画面的细腻程度，也是一个很巧妙的想法，移动设备屏幕小，这种排列不能在小屏幕上提升分辨率表现，对于50英寸的大尺寸面板来说，像素的体积缩小为原来的一半，加白色像素的增加，画面的像素数量会呈现急剧的上升，从而在次像素上达到一定的数量，实现了4K的标准，当然就实际的独立像素来说，其仍旧无法和真正的4K面板相比。
RGBW能够改变4K市场的格局？
可能有的用户会说这是一种偷工减料，但是其也的确有亮度更高，更加节能以及成本的优势，可以让更加精细的面板进入千家万户，至于其颜色不纯的弊端可以利用颜色处理技术来加强，细腻的效果上虽然无法通过软件来弥补，但是其毕竟比1080P的面板要清楚，尤其是第二种RGBW排列方案，在独立像素上，也几乎贴近了4K的水平，还是可以满足目前的使用需求。
目前已经有消息，创维、康佳和长虹将采用RGBWGreen或G+UHD面板，并将于2014年二季开始量产，其能否成功还是得看消费者的眼睛，毕竟市场才是检验技术的唯一真理，至于技术上是否有缩水，并不是一个技术成败的关键。
赞