LCD liquid crystal display is an important part of modern display technology, and its working principle and realization are worth exploring in depth. In this paper, we will elaborate the working mechanism of LCD liquid crystal display from the structure of LCD liquid crystal display, working principle and specific application of three aspects.
First, the structure of LCD liquid crystal display screen
LCD liquid crystal display mainly consists of liquid crystal panel, backlight, color filter, backlight module and other components. Among them, the LCD panel is the core part, which consists of two parallel glass panels and the middle of the liquid crystal layer. In the glass plate, respectively, attached to the conductive film, through the power on and off to control the arrangement of liquid crystal molecules, thus presenting different colors.
The backlight is another important part of the LCD liquid crystal display. It consists of LED lamps and light guide plate and other components, the main role is to provide the liquid crystal panel required lighting light. Light through the liquid crystal panel adjustment effect, displaying different image information.
Second, the working principle of LCD liquid crystal display screen
LCD liquid crystal display working principle is mainly the use of liquid crystal molecules of electrical and optical effects. In the absence of voltage, liquid crystal molecules in the electric field under the action of the arrangement will change, thus affecting the number of light through. When voltage is added, the liquid crystal molecules rearrange themselves, causing the amount of light passing through to change. By controlling the voltage of each pixel, adjustment of the brightness of the pixel can be realized, thereby realizing the display of an image.
Specifically, when voltage is added to the upper and lower conductive films of the LCD panel, the liquid crystal molecules are aligned in the direction of the electric field, allowing light to pass through. When the voltage is canceled, the liquid crystal molecules return to their original shape and light cannot pass through. By controlling the voltage to each pixel, the LCD panel can display different colors.
The working principle of the backlight is to emit light through the LED lamp, through the reflection and diffusion of optical components such as the light guide plate, so that the light becomes more uniform and softer, and then through the LCD panel, and ultimately realize the display of images.
Third, the specific application of LCD liquid crystal display screen
LCD liquid crystal display in various fields have a wide range of applications, such as cell phones, notebook computers, TVs and so on. Compared with the traditional CRT display, LCD liquid crystal display has the advantages of small size, light weight, high picture quality, so it gradually replaced the CRT display as the mainstream display technology.
In cell phones, LCD is responsible for displaying various images and text information, and realizing user’s operation through touch screen technology. In notebook computers, LCD is the main display device, through which users can watch movies, play games, document editing and other operations. In the field of television, LCD TV has become a mainstream product in the market, it can provide clear, realistic picture effect, to meet the user’s viewing needs.
In addition to being widely used in consumer electronics products, LCD liquid crystal display also plays an important role in industrial production, medical equipment, transportation and other fields. For example, in the production line, LCD can be used as a monitoring device, real-time display of various data and parameters in the production process, to facilitate staff monitoring and management of the production process. In the medical equipment, LCD can be used to display medical images and data information to help doctors carry out accurate diagnosis and treatment. In the field of transportation, LCD can be used as a vehicle navigation equipment, providing accurate maps and navigation information to help drivers reach their destinations safely.
In breve, LCD liquid crystal display, as an important display technology, has been widely used in various fields. With the continuous development of science and technology, the technology of LCD will also continue to progress and improve, bringing more convenience and value to people’s life and work.
