FAQs (Frequently Asked Questions)

問: 與 CDT 相比,TFT LCD 的優勢何在?

答: CDT 顯示器中,一個電子槍以撞擊熒光玻璃上的偏光電子方式發射電子和一 般光。因此,CDT 顯示器基本上以模擬紅綠藍信號操作。TFT LCD 顯示器則是 運用液晶屏面顯示輸入圖像的裝置。TFT 與 CDT 有根本不同的結構﹕其每一晶 胞皆有動態矩陣結構和獨立的活性元素。TFT LCD 有兩個玻璃屏面,其空間裝 滿液晶。當每一晶胞接上電極並通上電壓時,液晶分子結構則受到改變,從而控 制從里面射向顯示圖像的光。TFT LCD 比 CDT 有多重優勢,因為它能變得特 別薄,又沒有閃光,原因是它不使用掃描法。

問: LCD 顯示器的垂直頻率為何最大祗有 60 赫茲?

答: 與 CDT 顯示器不同,TFT LCD 屏幕具有固定的分辨率。例如,XGA 顯示 器祗有 1024x3(紅綠藍)x768 個像素,而更高分辨率若無更多的軟體處理則不 可得。本屏幕則定為 65 赫茲點脈沖最大顯示,即 XGA 顯示器的標準頻率之一。 既然此點脈沖是 60Hz/48kHz,此顯示器的最大頻率則為 60 赫茲。

問: 現有何種廣角技術?其功能如何?

答: TFT LCD 屏幕是透過液晶雙重折射放進內部光亮的元素控制器/顯示器。它 利用內部光折射至液體元素主軸的這一特性,控制內部光的方向、將光顯示出 來。由於液晶上內部光的折射比率隨光的內部角度變化,TFT 的視角比 CDT 的 視角更窄。通常,視角指對比度為 10 的角度點。目前有許多擴大視角的開發途 徑。最常用的方法為利用廣視角片,透過變換折射比率來擴大視角。IPS(面內 開關)或 MVA(多項垂直校準)也被用來擴大視角。飛利浦 181AS 型使用的則 是先進的IPS技術。

問: LCD 顯示器如何沒有閃光?

答: 從技術上說,LCD 也閃動,不過這個現象的原因與 CRT 顯示器的不同—其 並不妨礙視覺舒適感。LCD 的閃光指正負極電壓差造成的一般不易覺察的發 光。另一方面,傷害眼睛的 CRT 閃光是由於熒光物體的閃/滅動作變得顯而易見 而造成的。既然 LCD 屏幕的液晶反應速度較慢,這種討厭的閃光現象不存在於 LCD 顯示器。

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Philips 190BW9 user manual FAQs Frequently Asked Questions

190BW9 specifications

The Philips 190BW9 is a 19-inch wide LCD monitor that has garnered attention for its blend of performance, design, and user-friendly features. Designed for both professional and personal use, this monitor offers a combination of visual quality and flexibility that appeals to a range of users, from office workers to home users.

One of the standout features of the Philips 190BW9 is its widescreen aspect ratio of 16:10, making it ideal for multitasking, as users can work on documents while having a secondary task open at the same time. The monitor boasts a native resolution of 1440 x 900 pixels, delivering sharp and clear images that enhance productivity. The 5ms response time ensures smooth motion handling, which is particularly beneficial for multimedia applications and dynamic content.

In terms of design, the Philips 190BW9 offers an aesthetically pleasing appearance. Its sleek and modern look is complemented by a sturdy stand that allows for tilt adjustment, helping users find the most comfortable viewing angle. The monitor's frame is relatively thin, making it suitable for environments where space is a consideration.

The LCD panel utilizes advanced technologies that improve image quality and color reproduction. With a 2000:1 contrast ratio, the monitor delivers deep blacks and vibrant colors, allowing users to enjoy a rich visual experience. The Philips 190BW9 also features a high brightness level of 300 cd/m², ensuring that images are easily viewable in various lighting conditions.

Phillips has also integrated Energy Star certification into the design of the 190BW9, making it an environmentally friendly choice. The monitor consumes less power during operation, which not only reduces energy bills but also aids in lowering the overall carbon footprint.

Connectivity options are versatile, featuring VGA and DVI ports, which allow users to connect to a variety of devices, including desktops and laptops. In addition, the monitor includes integrated speakers, which can save desk space and provide a more streamlined setup.

Overall, the Philips 190BW9 monitor stands out for its practicality, clear image quality, and thoughtful features aimed at enhancing user experience. Its combination of style, performance, and eco-friendliness makes it an excellent choice for those looking to upgrade their display solution. Whether for work or play, the Philips 190BW9 meets the diverse needs of today’s digital tasks.