FAQs (Frequently Asked Questions)

片垂直置於一個偏光光柱,從上方偏光屏面來的光隨著液晶分子的螺旋結構轉向 90 度,穿過 下面的偏光過濾片。通上電壓,液晶分子從原來的螺旋結構變成垂直排列,而光的方向也不再 轉向 90 度。在此情況下,從上面偏光屏面來的光則不會穿過下面的偏光過濾片。

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。

問: LCD 顯示器為何幾乎不受電磁干擾?

答: 與 CRT 不同,LCD 顯示器沒有主要部件會生發電磁干擾,尤其沒有磁場。同樣,因為 LCD顯示器使用相當低的能源,其能源輸送極其安靜。

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Philips 170B5 Cdt 相比,Tft Lcd 的優勢何在?, LCD 顯示器的垂直頻率為何最大祗有 60 赫茲?, 現有何種廣角技術?其功能如何?, Lcd 顯示器如何沒有閃光?, Lcd 顯示器為何幾乎不受電磁干擾?

170B5 specifications

The Philips 170B5 is a robust and versatile LCD monitor designed to meet the diverse needs of both home and office environments. With a 17-inch diagonal screen size, this monitor strikes a balance between compactness and usability, making it an excellent choice for users with limited desk space, while still providing sufficient screen real estate for productivity.

One of the standout features of the Philips 170B5 is its impressive display technology. The monitor utilizes TFT LCD technology, which delivers clear and vibrant images with excellent color accuracy. It has a resolution of 1280 x 1024 pixels, providing sharp details that are ideal for office applications, graphic design tasks, and multimedia consumption. The 5ms response time significantly reduces blurring during fast-moving visuals, resulting in a smoother viewing experience.

Ergonomics is another key aspect of the Philips 170B5. The monitor is equipped with an EasyAdjust stand, allowing users to easily adjust the height, tilt, and swivel of the screen for maximum comfort during prolonged use. This feature is particularly beneficial for individuals who face long working hours, as it helps reduce neck and eye strain, promoting better posture and productivity.

Additionally, the monitor includes a variety of connectivity options, making it adaptable to multiple setups. With a VGA input, users can easily connect the 170B5 to a range of devices, from traditional desktops to newer laptops. Its energy-efficient design also contributes to its appeal, featuring eco-friendly certifications that minimize power consumption and reduce environmental impact.

Another noteworthy characteristic of the Philips 170B5 is its built-in speakers, which provide surprisingly good sound quality for casual multimedia use. This eliminates the need for external speakers in many situations, saving additional desk space.

Overall, the Philips 170B5 is a reliable and performance-oriented choice for users seeking a well-rounded monitor. With its combination of advanced display technology, ergonomic features, flexible connectivity, and efficient design, it represents an excellent option for a wide range of applications, from business tasks to everyday computing needs. Whether in a professional setting or at home, the Philips 170B5 delivers on the promise of quality and functionality.