FAQs (Frequently Asked Questions)

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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 191EW9 user manual FAQs Frequently Asked Questions

191EW9 specifications

The Philips 191EW9 is a monitor designed to deliver premium performance aimed at both productivity and entertainment. With a sleek, modern aesthetic, it complements any workspace or home environment while offering a range of features that enhance user experience.

One of the standout features of the Philips 191EW9 is its 19-inch LCD display, which provides a resolution of 1440 x 900 pixels. This widescreen format is particularly beneficial for multitasking, allowing users to view multiple windows side by side without the need for a larger which can take up more desktop space. The monitor offers vibrant colors and sharp image quality, thanks to its high brightness and excellent contrast ratios, making it suitable for both gaming and media consumption.

The Philips 191EW9 incorporates advanced technology, including PowerSensor, which uses a built-in proximity sensor to detect the presence of users. When the user steps away from their desk, PowerSensor automatically reduces the brightness of the display, saving energy and reducing power costs. This not only benefits the environment but also extends the life of the monitor.

Another key characteristic of the Philips 191EW9 is its ergonomic design. The monitor features a height-adjustable stand that allows for customized viewing angles, which is essential for reducing eye strain during long periods of use. Furthermore, the tilting screen enables users to find the most comfortable position, promoting better posture and overall well-being.

Philips also ensures comprehensive connectivity with a variety of input options, including VGA and DVI ports. This versatility allows users to easily connect the monitor to different devices, such as laptops, desktops, and gaming consoles, making it a practical choice for home and office setups alike.

In terms of additional features, the Philips 191EW9 boasts an integrated webcam and built-in speakers. This makes it an excellent choice for video conferencing, enabling seamless communication without the need for extra peripherals.

Overall, the Philips 191EW9 is an exceptional monitor that combines aesthetic appeal with advanced technology and versatility. Whether for work or play, it meets the demands of modern users who seek quality and efficiency in their display solutions.