FAQs (Frequently Asked Questions)

答: LCD 若非由静态矩阵 格即由动态矩阵 格制作。动态矩阵的晶体管放在 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 格,其像素位于 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

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CDT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 CDT 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?

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Philips 221E user manual FAQs Frequently Asked Questions

221E specifications

The Philips 221E is a versatile monitor designed to meet the needs of both casual users and professionals looking for quality functionality. With its sleek design and impressive features, this monitor stands out in a crowded market.

At the heart of the Philips 221E is its 21.5-inch display, which offers a Full HD resolution of 1920 x 1080 pixels. This ensures crisp image quality, making it ideal for various applications ranging from office work to gaming and multimedia consumption. The IPS panel technology used in this monitor provides vibrant colors and wide viewing angles, allowing users to enjoy consistent image quality from different positions.

One of the key features of the Philips 221E is its slim profile and elegant design. Its ultra-narrow bezels enhance the viewing experience by maximizing screen real estate, making it a great choice for multi-monitor setups. The monitor’s compact footprint allows it to fit seamlessly into any workspace, while the adjustable stand offers tilt functionality for optimized viewing comfort.

Philips has incorporated several technologies to reduce eye strain, making the 221E suitable for extended periods of use. The Flicker-Free technology and LowBlue Mode help reduce harmful blue light emissions while minimizing flicker on the screen. These features are crucial for users who spend long hours in front of their monitors, as they help promote better eye health.

Connectivity options are another strong point of the Philips 221E. It comes equipped with multiple video inputs, including VGA and HDMI ports, allowing users to easily connect it to a variety of devices like laptops, desktops, or gaming consoles. This versatility makes it a practical choice for home and office environments.

Additionally, the Philips 221E is energy-efficient, certified with Energy Star ratings, and complies with various environmental standards. It consumes less power without compromising performance, making it an eco-friendly choice.

In summary, the Philips 221E is a feature-rich monitor that excels in image quality, design, and user comfort. With its Full HD resolution, IPS technology, eye-friendly features, and versatile connectivity, it caters to a wide range of needs, making it an excellent investment for anyone seeking a reliable display solution.