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How Can I Assess the Quality of an LCD Screen?

Views: 267     Author: Wendy     Publish Time: 2023-06-28      Origin: Site


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How Can I Assess the Quality of an LCD Screen?

Contrary to appearances, the LCD screen is actually made up mostly of four pieces (a cold cathode fluorescent bulb, a polarizer, glass, and filter). How can one assess the quality of an LCD screen?

1. The filter for the LCD display screen

Specifically, the color filter is what allows the TFT LCD panel to change colors. With the use of the so-called liquid crystal panel, the driving IC's voltage may be changed, causing the liquid crystal molecules to arrange themselves into rows and display the image together with its color on the liquid crystal display screen. It's in black and white, but with the use of a filter, it can be made to look like a color pattern.

2. The LCD display screen's polarizing plate.

The purpose of the polarizer is to divide the incoming linear light into polarized light components. It can transform natural light into linearly polarized light.

The LCD screen's polarizer has two parts: one that lets light flow and the other that is absorbed, reflected, dispersed, etc. to hide it and lessen the production of bright or dead pixels.

Cold cathode fluorescent lights are distinguished by their small size, excellent brightness, and long lifespan. CCFLs are made of specially designed and treated glass that can endure up to 30,000 switching operations and be reused repeatedly after quick lighting.

The cold cathode fluorescent lamp uses three primary color phosphors, which increases its luminous strength, slows down light decay, and improves color temperature performance. As a result, very little heat is produced, significantly extending the lifespan of our LCD screen.

3. The causes and solutions for LCD display screen bright/dead pixels

The manufacturer's motivation

Bright spots, often referred to as bright/dead pixels on LCD panels, are a sort of physical damage to the LCD screen that is mostly caused by the internal reflector of the screen being crushed by external force or somewhat bent by heat at the bright spots.

Bright/dead pixels, as the name implies, are irreparable LCD panel pixels that are created during the manufacturing process by LCD LTD's maker.

Motives for use

Some liquid crystals' bright/dead pixels may be brought on by the use process. I'll only list a few safety measures for typical use:

Avoid installing numerous systems at once; while switching between systems after installing multiple systems, the LCD display panel may sustain some damage.

Maintain regular power and voltage levels

At no time should you tamper with the LCD buttons.

The aforementioned three factors may have a direct or indirect impact on how normally the "liquid crystal cell" molecules function, which could result in bright or dead pixels.

Consumers see bright or lifeless dots while using. In fact, engineers may inspect them to determine what caused them. Even if bright/dead dots arise, customers will be understandable as long as the producer of LCD LTD does not attempt to hurt consumers with an uninformed conscience.




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