What is a LCD display screen?-Shenzhen Hertuo Electronic Technology Co., Ltd

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What is a LCD display screen?

Release time:

2024-03-14 13:36

LCD display screen is an electronic device that works by converting light sources into imaging signals through LCD technology to achieve image display. LCD screens are widely used in various electronic devices, such as computer monitors, mobile phones, and tablet TVs.

The structure of LCD display screens

A liquid crystal display screen is composed of an array of many liquid crystals, each of which is a pixel, used to control the position and shape of the image on the screen. In a monochrome LCD screen, a liquid crystal is a pixel, while in a color LCD screen, each pixel is composed of three liquid crystals: red, green, and blue.

The structural characteristic of liquid crystals is that molecules have certain ordered properties. When liquid crystal molecules adjust their direction under the action of an electric field, the electro-optic effect can cause liquid crystal light to change from linearly polarized light to birefringent light, and can also change the direction of light vibration, thereby achieving the goal of adjusting the transmitted or reflected light and changing the image.

During the operation of a liquid crystal display screen, light is irradiated onto the LCD panel through a backlight. After adjusting the vibration direction of the light on the LCD panel, it is then converted into a color image through a color filter. Therefore, the construction system of LCD screens generally consists of a backlight, LCD layer, and OC control circuit.

The advantages of LCD display screens

LCD displays have the following advantages compared to other displays (such as CRT displays):

1. Lightweight and portable

Compared to traditional CRT displays, LCD screens are lighter, thinner, and more portable, which is now the standard configuration for smartphones.

2. High definition

LCD screens can provide high-resolution and high color reproduction display effects, and LCD display technology has become increasingly mature, making the display quality of LCD screens more stable.

3. Low power consumption

Compared to traditional CRT displays, LCD displays have lower power consumption, which is a characteristic that people now demand for all electronic devices.

4. Wide observation angle

Light colored pixels can better maintain the brightness of the original color in the flat space, and a good LCD screen panel design can also provide a wider observable angle, preventing image deformation when viewed from the side.

5. Fast reaction speed

The response speed of LCD screens is faster than traditional CRT screens, which can greatly shorten the screen refresh time and improve the smoothness of images.

6. Vivid colors

LCD screens can display images with bright colors and high color saturation. And with the continuous development of LCD display technology, the colors displayed by color LCD screens are increasingly approaching those of CRT displays.

Disadvantages of LCD display screens

LCD screens have the following drawbacks compared to other displays, such as CRT screens:

1. Black has low purity

In relatively dark environments, the black depth and purity of LCD displays are relatively poor, which can affect image quality.

2. Low contrast

Due to the rotation adjustment of liquid crystal molecules, the light cannot be completely reflected by the light source, so the contrast of liquid crystal displays is not very high compared to CRT displays.

3. Unable to provide stability and clarity of CORBA screens

For some professional users, more professional display effects are needed, such as the stability and clarity of CRT displays.

4. Liquid crystal aberration effect

The liquid crystal aberration effect refers to the distortion and deformation of the image caused by uneven pressure between the liquid crystal electrode and the glass substrate.

The Development of LCD Display Screen

With the advancement of technology, the market share of LCD screens is gradually increasing. Currently, LCD screens have become the most widely used display in various electronic devices, especially in smartphones, tablets, televisions, and other fields.

At present, LCD displays in the market are constantly innovating, giving rise to various types of products such as LED displays, 4K displays, 5K displays, curved displays, portable displays, and wide-angle displays. Among them, LED display screens are a popular type of LCD display, which have higher brightness, lower power consumption, and much faster response speed.

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