VA液晶 目录 原理 外部链接 导航菜单VA液晶和IPS液晶的差异 BCN液晶的类型编编辑或修订编

顯示科技光电子学


TN液晶对比度可視角度液晶电视夏普东芝三星索尼群創友達SONYPSP智能手机ASV液晶富士通偏光镜双折射背光对比度颜色亮度





VA液晶（Vertical Alignment liquid crystal）是垂直排列液晶的简称。跟TN液晶相比VA液晶有更高的对比度和更宽广的可視角度，是当今大屏幕液晶电视采用的主流技术。


目前夏普、东芝、三星、索尼以及台湾的群創、友達等都使用VA液晶技术制造大屏幕液晶电视。SONY的手掌式游戏机PSP和夏普的智能手机AQUOS PHONE使用了夏普生产的增强型VA液晶（ASV液晶）。


VA液晶的开发要追溯到20世纪70年代。那时候被称为DAP方式（Deformation of vertical Aligned Phase）或VAN（Vertical Aligned Nematic），由于没有发明多域（Multi-Domain）技术，视野狭窄实用性不高，90年代研究被中止。富士通解决了这个问题之后，VA液晶重新得到业界的瞩目。




目录





  • 1 原理

    • 1.1 優點


    • 1.2 缺點



  • 2 外部链接




原理


初期状态的VA液晶中液晶分子垂直于偏光镜平面排列，这时候光线无法透过，屏幕为黑色。对导电板施加电压后，液晶呈倒伏状排列，导致光线双折射透过液晶。初期状态液晶分子垂直排列，背光几乎无法透过，因此能实现大对比度。电压大小能控制液晶分子倒伏程度，实现颜色和亮度的调节。


最初液晶分子只能向一个方向倒伏，所以视角有方向性。随着多域（Multi-Domain）技术出现，将液晶分子分为上下左右前后6个域倒伏彻底解决了方向性问题。



優點


  • 對比度較高。

  • 色溫較溫和。

  • 漏光程度較低。

  • 可視角提升到178度，有改善TN版面失色的問題。


缺點


  • 雖然有跟IPS一樣的178度可視角，但左右看螢幕會有偏白的情況。

  • 色彩較IPS低。


外部链接


  • VA液晶和IPS液晶的差异 BCN

  • 液晶的类型










  • 查

  • 论

  • 编


液晶

相

向列型液晶  · 层列型液晶  · 胆甾型液晶
应用

液晶显示器  · 液晶投影  · 液晶覆硅  · 液晶镜头  · 液晶快门  · 液晶窗
驱动方式

扭曲向列型液晶  · 超級扭曲向列液晶  · 垂直排列液晶  · 橫向電場效應顯示技術
相关技术

薄膜電晶體液晶顯示器  · 背光  · 倍速液晶  · 3D液晶  · 抛光  · 壞點



-

Popular posts from this blog

名間水力發電廠 目录 沿革 設施 鄰近設施 註釋 外部連結 导航菜单23°50′10″N 120°42′41″E / 23.83611°N 120.71139°E / 23.83611; 120.7113923°50′10″N 120°42′41″E / 23.83611°N 120.71139°E / 23.83611; 120.71139計畫概要原始内容臺灣第一座BOT 模式開發的水力發電廠－名間水力電廠名間水力發電廠 水利署首件BOT案原始内容《小檔案》名間電廠 首座BOT水力發電廠原始内容名間電廠BOT - 經濟部水利署中區水資源局编编

Image
東螺溪清水溪加走寮溪阿里山溪東埔蚋溪獅尾堀清水溪清水溝溪水里溪陳有蘭溪郡坑溪十八重溪那馬嘎班溪松柏坑溪卓棍溪瓠瓢坑溪益則坑溪玉崙溪丹大溪郡大溪巒大溪卡社溪栗栖溪萬大溪萬大北溪萬大南溪霧社溪塔羅灣溪馬赫坡溪萬大發電廠大觀發電廠日月潭第一發電所明潭發電廠...
Read more

Prove that NP is closed under karp reduction?Space(n) not closed under Karp reductions - what about NTime(n)?Class P is closed under rotation?Prove or disprove that $NL$ is closed under polynomial many-one reductions$mathbfNC_2$ is closed under log-space reductionOn Karp reductionwhen can I know if a class (complexity) is closed under reduction (cook/karp)Check if class $PSPACE$ is closed under polyonomially space reductionIs NPSPACE also closed under polynomial-time reduction and under log-space reduction?Prove PSPACE is closed under complement?Prove PSPACE is closed under union?

Image
Is a conference paper whose proceedings will be published in IEEE Xplore counted as a publication? Prove that NP is closed under karp reduction? Is it important to consider tone, melody, and musical form while writing a song? How is it possible to have an ability score that is less than 3? Can I make popcorn with any corn? Mathematical cryptic clues tikz: show 0 at the axis origin Minkowski space can i play a electric guitar through a bass amp? Why not use SQL instead of GraphQL? How can I prevent hyper evolved versions of regular creatures from wiping out their cousins? How old can references or sources in a thesis be? Do VLANs within a subnet need to have their own subnet for router on a stick? How to add double frame in tcolorbox? How much RAM could one put in a typical 80386 setup? "You are your self first supporter", a more proper way to say it How is the claim "I am in New York only if I am in America" the same as "If I am ...
Read more

Is my guitar’s action too high? Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)Strings too stiff on a recently purchased acoustic guitar | Cort AD880CEIs the action of my guitar really high?Μy little finger is too weak to play guitarWith guitar, how long should I give my fingers to strengthen / callous?When playing a fret the guitar sounds mutedPlaying (Barre) chords up the guitar neckI think my guitar strings are wound too tight and I can't play barre chordsF barre chord on an SG guitarHow to find to the right strings of a barre chord by feel?High action on higher fret on my steel acoustic guitar

Image
Is the Mordenkainen's Sword spell underpowered? Escaping $ in listings environment Short story about astronauts fertilizing soil with their own bodies No invitation for tourist visa but I want to visit Do regular languages belong to Space(1)? Can I take recommendation from someone I met at a conference? How to name indistinguishable henchmen in a screenplay? Found this skink in my tomato plant bucket. Is he trapped? Or could he leave if he wanted? How can I prevent/balance waiting and turtling as a response to cooldown mechanics Can I feed enough spin up electron to a black hole to affect it's angular momentum? Why does BitLocker not use RSA? Is my guitar’s action too high? Does GDPR cover the collection of data by websites that crawl the web and resell user data Trying to enter the Fox's den How to achieve cat-like agility? "Destructive power" carried by a B-52? Should man-made satellites feature an intelligent inverted "cow c...
Read more