Question

What is an lcd display made of

Answer 1

The manufacture of liquid crystal displays involves a variety of core materials and complex process. The following are the main components of liquid crystal displays and their material composition:

1. Liquid crystal material

Definition and characteristics: Liquid crystal material is a special substance between solid and liquid, with crystal-like order and liquid-like fluidity. It can achieve the transition between molecular states through tiny external energy (such as electric field), thereby causing changes in physical properties such as light, electricity, and magnetism.
Type: There are many types of liquid crystal materials, the most common of which are nematic liquid crystal, twisted liquid crystal, ferroelectric liquid crystal, etc. These different types of liquid crystal materials have their own unique characteristics to meet the needs of different types of liquid crystal displays.
Function: In liquid crystal displays, liquid crystal materials are the key elements of display. By controlling the change of electric field, the arrangement of liquid crystal molecules will change, thereby affecting the passage and blocking of light and realizing the display of images.

2. Glass substrate

Material: The display panel of liquid crystal displays usually uses glass substrate as the supporting material. These glass substrates are usually made of materials such as amorphous silicon or indium tin oxide (ITO).
Characteristics: The glass substrate needs to have good flatness and transparency to ensure the display effect of the liquid crystal display. Some high-end LCD screens even use organic substrates to achieve thinner and more flexible designs.

3. Conductive materials

Materials: The conductive materials in LCD screens generally use transparent conductive indium tin oxide (ITO) or transparent conductive indium oxide (ZnO).

Features: These conductive materials must not only have good conductivity, but also have very high transmittance to ensure the clarity of the LCD screen. They are used to make conductive electrodes to control the arrangement and change of liquid crystal molecules.

4. Polarizer

Definition and composition: Polarizer is a composite film, including two parts: polarizing film and protective film. The polarizing film is mainly composed of a two-phase dye attached to a polyvinyl alcohol base, and the main component of the protective film is triacetyl cellulose.

Function: The polarizer plays a role in controlling the polarization direction of light in the LCD screen, ensuring that only light in a specific direction can pass through the screen, thereby improving the display effect.

5. Other materials

Oriented film: Contains elements such as polyimide and diamond carbon, which are used to control the arrangement direction of liquid crystal molecules.
Filter: Contains heavy metals such as chromium and nickel, used to filter specific wavelengths of light and improve color accuracy.
Backlight module: Provides the light source required for the LCD screen, usually composed of fluorescent tubes or LEDs.

6. Process

The manufacturing process of the LCD screen involves multiple links, including the preparation of liquid crystal materials, cleaning and coating of glass substrates, production of conductive electrodes, lamination of polarizers, infusion and packaging of liquid crystals, etc. These processes require highly precise control and strict quality management to ensure the performance and quality of the final product.

In summary, the LCD screen is made of multiple materials such as liquid crystal materials, glass substrates, conductive materials, polarizers, and complex process. These materials and processes jointly determine the display effect and performance of the LCD screen.

Answer 2

Liquid crystal display (LCD) is mainly made of the following parts:

1. Glass substrate: As the supporting structure of the display, it is usually composed of two parallel glass plates.

2. Liquid crystal material: This is a special substance between solid and liquid, with the anisotropy of crystals and the fluidity of liquids. The liquid crystal layer is located between the two glass substrates, and the arrangement state of liquid crystal molecules is controlled by the electric field, thereby changing the transmittance of light and realizing the display of images.

3. Polarizer: Usually set on the outside of the glass substrate, it only allows light in a specific direction to pass through, and works with the liquid crystal layer to control the propagation direction of light.

4. Backlight: Such as LED backlight, it provides a uniform background light source for the LCD screen, so that the image can be clearly seen.

5. Color filter: It is used to generate color images, and a rich color effect is formed by combining color blocks of different colors.

In summary, the LCD screen is made of key components such as glass substrate, liquid crystal material, polarizer, backlight and color filter.

Answer 3

Glass substrate is a thin glass sheet with an extremely flat surface. As a key basic material in the flat panel display industry, it is widely used in display technologies such as liquid crystal displays (LCDs) and organic light-emitting diode displays (OLEDs).

It has excellent flatness, thermal stability and optical properties, can withstand high temperatures and maintain a stable structure, and helps improve the display effect and reliability of display devices.

The production processes of glass substrates include float, flow hole downdraw and overflow melting, among which overflow melting is the current mainstream process.

The global glass substrate market is highly concentrated, mainly dominated by a few manufacturers such as Corning in the United States and Asahi Glass in Japan.