< img src="https://mc.yandex.ru/watch/88750453" style="position:absolute; left:-9999px;" alt="" />

TFT LCD screen parameters

In the late 1980s, Japanese manufacturers mastered the mass production technology of Thin Film Transistor LCD and started mass production.

Thin Film Transistor Liquid Crystal Display (Thin Film Transistor Liquid Crystal Display) has become the mainstream display product in LCD liquid crystal display applications. The development of TFT LCD liquid crystal display has gone through a long basic research stage. After commercialization, TFT LCD liquid crystal display has become more and more abundant in size and wider in application fields due to its advantages of lightness, thinness, environmental protection and high performance. Introduce several basic parameters of TFT LCD liquid crystal display.

TFT LCD liquid crystal display

  1. Display Size: The display size of the TFT LCD screen refers to the diagonal length of the actual visible area, in inches, abbreviated as inches (1 inch = 2.54 cm).
  2. the aspect ratio (Aspect Ratio): The aspect ratio is the ratio of the length and width of the visible area of ​​​​the TFT LCD liquid crystal display, also known as the screen ratio. The aspect ratio of TFT LCD screen is mainly 4:3, 5:4, 16:10, 16:9, 18:9, 20:9. The ratio of 16:9 is closer to the golden ratio, and the human eye is more comfortable to watch. In the design of TFT LCD display products, H (Horizontal) is generally used to represent the length, and V (Vertical) is used to represent the width.
  3. Active Display Area: The effective display area refers to the total area of ​​the TFT LCD screen that can be displayed. Knowing the display size and aspect ratio of the TFT LCD, the specific length and width of the effective display area can be calculated using the Pythagorean law.
  4. the resolution (Number of Pixels): The resolution of the TFT LCD screen indicates the number of light-emitting points that can be used for screen display in the effective display area. The light-emitting points in the TFT LCD are called pixels. The resolution is generally expressed in the form of multiplication, such as the resolution of 240*320, where 240 represents the number of pixels displayed in the horizontal direction of the effective display area, and 320 represents the number of pixels displayed in the vertical direction. The resolution reflects the total number of pixels in the effective display area. The higher the resolution, the higher the resolution (Reso Lution) of the picture. In general, the human eye is more sensitive to the number of pixels in the vertical direction. The higher the vertical resolution, the higher the clarity of the picture.
  5. Pixel Pitch: The pixel pitch is the distance between two adjacent pixels in the effective display area of ​​the TFT LCD screen, that is, the minimum length of the pixel repeating unit. The pitch of the TFT LCD screen is fixed, and the pitch is calculated by dividing the panel size by the resolution. The fineness of the picture is determined by the pixel pitch. The smaller the pixel pitch, the finer the picture. A more accurate indicator of the fineness of the picture is the PPI (Pixel Per Inch) value or the DPI (Dots Per Inch) value, that is, the number of pixels in a unit size. The high-definition TFT LCD display has a high PPI value.
  6. Power Consumption: The power consumption of the TFT LCD display is mainly the power consumption of the backlight, accounting for about 90%. The power consumption of TFT LCD display is much larger than that of AMOLED.
  7. the service life (Life Time): the service life of the TFT LCD LCD screen mainly depends on the life of the illuminator, the unit is hours (Hrs). Generally speaking, the TFT LCD screen can be used for tens of thousands of hours without any problem, and it can be used for about 15 years according to the use of 5 hours a day. The service life of TFT LCD is also called Mean Time Between Failures (MTBF), which is calculated based on high temperature and high humidity operation experiments. This is an accelerated lifetime reliability test.

The basic parameters such as display size, aspect ratio, effective display area, resolution, pixel pitch, power consumption, and service life of TFT LCD display are introduced. According to different manufacturers and product application fields, these parameters will also have different.

Shenzhen Hongcai Technology Co., Ltd. is a professional manufacturer of TFT LCD display, 2.31-inch LCD LCD, 2.8-inch LCD, 3.5-inch SPI serial screen, MCU interface screen, RGB interface screen, 8-bit 16-bit LCD screen, customized TFT LCD liquid crystal display, stable resources, stable quality, worry-free after-sales, cheap and affordable price, welcome to contact us.

Leave a Comment

Your email address will not be published.

Scroll to Top