Pixels and Sub pixels, Types of Pixel Defects

3.4Philips' Flat Panel Monitors Pixel Defect Policy

Philips strives to deliver the highest quality products. We use some of the industry's most advanced manufacturing processes and practice stringent quality control. However, pixel or sub pixel defects on the TFT LCD panels used in flat panel monitors are sometimes unavoidable. No manufacturer can guarantee that all panels will be free from pixel defects, but Philips guarantees that any monitor with an unacceptable number of defects will be repaired or replaced under warranty.This notice explains the different types of pixel defects and defines acceptable defect levels for each type. In order to qualify for repair or replacement under warranty, the number of pixel defects on a TFT LCD panel must exceed these acceptable levels. For example, no more than 0.0004% of the sub pixels on a 18.5" XGA monitor may be defective. Furthermore, Philips sets even higher quality standards for certain types or combinations of pixel defects that are more noticeable than others.This policy is valid worldwide.

Pixels and Sub pixels

A pixel, or picture element, is composed of three sub pixels in the primary colors of red, green and blue. Many pixels together form an image. When all sub pixels of a pixel are lit, the three colored sub pixels together appear as a single white pixel. When all are dark, the three colored sub pixels together appear as a single black pixel. Other combinations of lit and dark sub pixels appear as single pixels of other colors.

Types of Pixel Defects

Pixel and sub pixel defects appear on the screen in different ways.There are two categories of pixel defects and several types of sub pixel defects within each category.

Bright Dot Defects Bright dot defects appear as pixels or sub pixels that are always lit or 'on'.That is, a bright dot is a sub-pixel that stands out on the screen when the monitor displays a dark pattern. There are the types of bright dot defects:

One lit red, green or blue sub pixel

Two adjacent lit sub pixels:

-Red + Blue = Purple

-Red + Green = Yellow

-Green + Blue = Cyan (Light Blue)

Three adjacent lit sub pixels (one white pixel)

191E2SB/27 specifications

The Philips 191E2SB/27 is a versatile 19-inch LCD monitor designed to deliver excellent performance for both personal and professional use. This model combines advanced technologies with an elegant design, making it a great addition to any workspace.

At the heart of the Philips 191E2SB/27 is its 1280 x 1024 resolution, which provides sharp and clear images essential for tasks requiring detailed visuals. The 5ms response time ensures smooth display transitions, reducing motion blur, making it suitable for a variety of applications, from basic office tasks to multimedia enjoyment. The monitor features a standard aspect ratio of 5:4, which is ideal for traditional office applications and document editing.

One of the standout features of the Philips 191E2SB/27 is its energy efficiency. This monitor is equipped with the Eco-friendly technology that minimizes power consumption, scored with an energy rating that highlights its commitment to sustainability. The low energy consumption not only benefits the environment but also leads to cost savings on electricity bills, making it an economical choice for long-term use.

The monitor also showcases impressive image quality complemented by a contrast ratio of 1000:1 and a brightness level of 250 cd/m². These specifications ensure that colors are vivid and blacks are deep, providing an immersive viewing experience whether you’re watching videos, playing games, or working with graphics-heavy applications.

With its sleek design, the Philips 191E2SB/27 is created to fit seamlessly into any environment. The slim profile and narrow bezels give it a modern look, while its adjustable stand allows users to find their optimal viewing angle, enhancing comfort during long hours of work.

Connectivity options include VGA and DVI-D inputs, allowing flexibility for various devices. The inclusion of a VESA mount compliance also offers the possibility for wall mounting, providing additional space-saving options.

In summary, the Philips 191E2SB/27 monitor is an excellent choice for users seeking a reliable, efficient, and stylish display. With its combination of clear visuals, energy saving technologies, and user-friendly design features, it stands out as a solid solution for both professional and home use.