The reasons why there is a black horizontal line on the LCD TV screen:
1. There is a problem with the signal source input of the LCD TV, causing a black horizontal line to appear. In this case, you can check the connection line and switch to other program sources for testing.
2. If the horizontal line appears in each program source and is in the same position, it is a problem with the screen or cable arrangement. You need to contact the TV’s after-sales service for maintenance or screen replacement.
: LCD TV
Liquid crystal display, referred to as LCD (Liquid Crystal Display), uses a substance between solid and liquid, an organic compound with regular molecular arrangement, which is heated It is a substance that appears in a transparent liquid state and turns into a turbid solid state of crystalline particles after cooling.
The liquid crystal molecular structure used in liquid crystal displays is arranged like a thin matchstick and is called Nematic liquid crystal. A liquid crystal display made of this type of liquid crystal is also called LCD (Liquid Crystal Display). LCD TVs add voltage to the liquid crystal between two pieces of glass to reproduce the picture through changes in molecular arrangement and twists and turns. The screen creates pictures through the collision of electron groups and forms pictures through the perspective reflection of external light.
The world's first liquid crystal display device was manufactured by Japan's Sharp in the early 1970s and was called a TN-LCD (twisted nematic) liquid crystal display. In the 1980s, STN-LCD (super twisted nematic) liquid crystal displays appeared, and TFT-LCD (thin film transistor) liquid crystal display technology was developed at the same time. However, liquid crystal technology is still not mature and difficult to popularize. From the late 1980s to the early 1990s, Japan mastered STN-LCD and TFT-LCD production technology, and the LCD industry began to develop rapidly.
More and more LCD TVs have added dynamic contrast and natural light adjustment technology, which not only improves the display effect of the picture, but also effectively improves the tailing phenomenon of dynamic pictures. In addition, while improving the screen display effect, intelligent sound effects are also added. Through the addition of this technology, users can enjoy theater-like audio-visual effects.
More LCD TVs also have the product attributes of entertainment machines and have good performance in entertainment functions. In addition to playing mainstream video files, users can also access information through network connections. Online browsing and software upgrades fully meet users' daily needs.