FAQs (Frequently Asked Questions)

to control the luminance of a pixel. For this reason, the current in an active matrix display can be switched on and off more frequently, improving the screen refresh time (your mouse pointer will appear to move more smoothly across the screen, for example). The passive matrix LCD has a grid of conductors with pixels located at each intersection in the grid.

Q:What are the advantages of TFT LCD compared with CRT?

A:In a CRT monitor, a gun shoots electrons and general light by colliding polarized electrons on fluorescent glass. Therefore, CRT monitors basically operate with an analog RGB signal. A TFT LCD monitor is a device that displays an input image by operating a liquid crystal panel. The TFT has a fundamentally different structure than a CRT: Each cell has an active matrix structure and independent active elements. A TFT LCD has two glass panels and the space between them is filled with liquid crystal. When each cell is connected with electrodes and impressed with voltage, the molecular structure of the liquid crystal is altered and controls the amount of inlet lighting to display images. A TFT LCD has several advantages over a CRT, since it can be very thin and no flickering occurs because it does not use the scanning method.

Q:Why is vertical frequency of 60Hz optimal for an LCD monitor?

A:Unlike a CDT monitor, the TFT LCD panel has a fixed resolution. For example, an XGA monitor has 1024x3 (R, G, B) x 768 pixels and a higher resolution may not be available without additional software processing. The panel is designed to optimize the display for a 65MHz dot clock, one of the standards for XGA displays. Since the vertical/horizontal frequency for this dot clock is 60Hz/48kHz, the optimum frequency for this monitor is 60Hz.

Q:What kind of wide-angle technology is available? How does it work?

A:The TFT LCD panel is an element that controls/displays the inlet of a backlight using the dual-refraction of a liquid crystal. Using the property that the projection of inlet light refracts toward the major axis of the liquid element, it controls the direction of inlet light and displays it. Since the refraction ratio of inlet light on liquid crystal varies with the inlet angle of the light, the viewing angle of a TFT is much narrower than that of a CDT. Usually, the viewing angle refers to the point where the contrast ratio is 10. Many ways to widen the viewing angle are currently being developed and the most common approach is to use a wide viewing angle film, which widens the viewing angle by varying the refraction ratio. IPS (In Plane Switching) or MVA (Multi Vertical Aligned) is also used to give a wider viewing angle.

Q:Why is there no flicker on an LCD Monitor?

A:Technically speaking, LCDs do flicker, but the cause of the phenomenon is different from that of a CRT monitor -- and it has no impact of the ease of viewing. Flickering in an LCD monitor relates to usually undetectable luminance caused by the difference between positive and negative voltage. On the other hand, CRT flickering that can irritate the human eye occurs when the on/off action of the fluorescent object

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Philips 230WP7 What are the advantages of TFT LCD compared with CRT?, Why is there no flicker on an LCD Monitor?
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230WP7 specifications

The Philips 230WP7 is a prominent offering in the realm of computer monitors, particularly gaining attention for its blend of clarity, performance, and user-friendly features. With a 23-inch display, this monitor caters to both professional and casual users, providing an immersive viewing experience for various applications, from graphic design to everyday office tasks.

One of the standout features of the Philips 230WP7 is its wide viewing angle technology, which ensures that colors remain accurate and consistent even from off-angles. This is largely attributed to the use of IPS (In-Plane Switching) panel technology, which enhances color reproduction and provides deeper blacks compared to traditional panel types. Users can expect vibrant colors and detailed images, making it an excellent choice for multimedia consumption as well as professional photo editing.

Additionally, the Philips 230WP7 boasts a Full HD resolution of 1920 x 1080, delivering crisp visuals with sharp details. This high-definition resolution is suitable for both productivity and entertainment, ensuring that text is easy to read and images look stunning. The monitor also has a fast response time and a refresh rate that delivers smooth motion, reducing blurring during fast-paced video playback or gaming.

In terms of connectivity, the Philips 230WP7 offers a wide range of ports, including HDMI and DisplayPort, making it easy to connect to a variety of devices, from laptops to gaming consoles. Furthermore, it features built-in speakers, allowing users to enjoy audio without the need for additional external speakers.

The monitor’s design emphasizes ergonomics and user comfort, as it offers adjustable height, tilt, and swivel features, enabling users to customize their viewing experience. This is particularly beneficial for users who spend long hours in front of their screens, as it helps to reduce fatigue and strain on the eyes and neck.

Eco-friendliness is also a significant aspect of the Philips 230WP7. The monitor is built with energy-efficient technologies, including low power consumption modes and compliance with Energy Star standards, ensuring that users can reduce their environmental impact while enjoying high-performance display capabilities.

Overall, the Philips 230WP7 is a robust monitor that combines advanced display technologies with user-centric features, making it a versatile choice for anyone in need of a reliable and visually stunning display.
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