Philips 220BW user manual : 与 Cdt 相比,Tft Lcd 的优势何在?, : LCD 显示器的垂直频率为何最大只有 60 赫兹?, :现有何种广角技术?其功能如何?

Models: 220BW

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每一像素交接点上,需少量电流即能控制像素的亮度。因此,动态矩阵显示器的 电流能够更加频繁的开关,增进屏幕刷新时间(例如,你的鼠标似乎在屏幕上滑 得更加平稳)。静态矩阵 LCD 具有一种导体栅格,其像素位于栅格的每一交接 点。

问: 与 CDT 相比,TFT LCD 的优势何在?

答:CDT 显示器中,一个电子枪以撞击荧光玻璃上的偏光电子方式发射电子和一 般光。因此,CDT 显示器基本上以模拟红绿蓝信号操作。TFT LCD显示器则是运 用液晶屏面显示输入图像的装置。TFT与CRT有根本不同的结构:其每一晶胞皆有 动态矩阵结构和独立的活性元素。TFT LCD 有两个玻璃屏面,其空间装满液晶。 当每一晶胞接上电极并通上电压时,液晶分子结构则受到改变,从而控制从里面 射向显示图像的光。TFT LCD 比 CDT有多重优势,因为它能变得特别薄,又没有 闪光,原因是它不使用扫描法。

问: LCD 显示器的垂直频率为何最大只有 60 赫兹?

答:与 CDT 显示器不同,TFT LCD 屏幕具有固定的分辨率。例如,XGA显示器只 有1024x3(红绿蓝)x768个像素,而更高分辨率若无更多的软件处理则不可得。 本屏幕则定为 65赫兹点脉冲最大显示,即 XGA 显示器的标准频率之一。既然此 点脉冲是 60Hz/48kHz,此显示器的最大频率则为 60 赫兹。

问:现有何种广角技术?其功能如何?

答: TFT LCD 屏幕是透过液晶双重折射放进内部光亮的元素控制器/显示器。它 利用内部光折射至液体元素主轴的这一特性,控制内部光的方向、将光显示出 来。由于液晶上内部光的折射比率随光的内部角度变化,TFT 的视角比 CRT 的 视角更窄。通常,视角指对比度为 10 的角度点。目前有许多扩大视角的开发途 径。最常用的方法为利用广视角片,透过变换折射比率来扩大视角。IPS(面内 开关)或 MVA(多项垂直校准)也被用来扩大视角。飞利浦 181AS 型使用的则 是先进的 IPS 技术。

问: LCD显示器如何没有闪光?

答:从技术上说,LCD 也闪动,不过这个现象的原因与 CRT 显示器的不同—它 并不妨碍视觉舒适感。LCD 的闪光指正负极电压差造成的一般不易觉察的发光。 另一方面,伤害眼睛的 CRT 闪光是由于荧光物体的闪/灭动作变得显而易见而造 成的。既然 LCD 屏幕的液晶反应速度较慢,这种讨厌的闪光现象不存在于 LCD 显示器。

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Philips 220BW user manual : 与 Cdt 相比,Tft Lcd 的优势何在?, : LCD 显示器的垂直频率为何最大只有 60 赫兹?, :现有何种广角技术?其功能如何?

220BW specifications

The Philips 220BW is a notable monitor that has garnered attention for its impressive performance and user-friendly features. As a part of Philips' premium line of display products, it delivers both high-quality visuals and versatile connectivity options suitable for various computing needs.

One of the standout features of the Philips 220BW is its 22-inch wide LCD display, which offers a native resolution of 1680x1050 pixels. This resolution provides a crisp and sharp image quality, making it ideal for tasks such as graphic design, video editing, and gaming. With a 16:10 aspect ratio, the monitor allows for a more immersive viewing experience and offers ample screen real estate for multitasking.

In terms of image quality, the Philips 220BW utilizes advanced technologies to enhance visual performance. It features a high brightness level of up to 250 nits, which ensures vivid colors and clear images, even in well-lit environments. The contrast ratio of 3000:1 provides deep blacks and bright whites, allowing for a richer viewing experience. Additionally, the monitor supports 16.7 million colors, ensuring that images are rendered accurately and with depth.

Another significant aspect of the Philips 220BW is its ergonomic design. The monitor is equipped with tilt and swivel functionalities, allowing users to adjust the viewing angle to their comfort. This feature is particularly beneficial for long hours of usage, as it helps reduce neck and eye strain. Furthermore, its sleek and modern aesthetics make it an attractive addition to any workspace.

Connectivity is also a strong point for the Philips 220BW. The monitor is compatible with a variety of devices, featuring both DVI and VGA inputs. This versatility allows users to connect their desktop computers, laptops, and other devices with ease. Additionally, the monitor has built-in speakers, which eliminate the need for external audio devices, further streamlining the workspace.

Overall, the Philips 220BW is a well-rounded monitor that combines high performance, ergonomic features, and versatile connectivity options. It is an excellent choice for anyone looking to enhance their computing experience, whether for professional use, gaming, or general multimedia consumption. Its blend of technology and design makes it a valuable asset for home or office environments.