Many customers experience LCD screen brightness not meeting the product's requirements during the use of the product. Some may not have the original brightness of the LCD screen, while others may fade and darken after a period of use. Here, I will introduce the specific technology of brightness:
LCD screen presents images through a dedicated backlight source. LCD screen emits light through a backlight source, which can display rich colors through the deflection of LCD molecules and the action of color filters. Therefore, the backlight source has a very important impact on the brightness of the LCD screen. At the same time, the performance of the backlight source also has a significant impact on the brightness of the display. After the backlight source emits light, The light is controlled by the voltage of the front LCD panel, and the LCD molecules allow the light to pass through or block, displaying the brightness of the image. This process is controlled by an IC chip, which is similar in principle to the shutter in a camera and can control the light flux. Camera products usually have a shutter located behind the lens, which opens when taking photos, allowing objects to be imaged in the film or photosensitive element to form a photo. In addition, the LCD panel emits light of uniform brightness from the backlight, which is blocked by the LCD panel's light and imaged by the brightness of the light through control.
The light passing through the LCD panel not only has two forms: bright and dark, but also has various color levels from bright to dark. In addition, when watching continuous animations, by standard, we need 60 frames per second, that is, switching between light and dark states 60 times per second. In order to express the accuracy of the picture, it is necessary to require a sufficient number of pixels, and the LCD panel structure must also be fine enough.
The transmittance of LCD screens is generally only 5% -8%. LCD screens can control the brightness of light at high speed by using voltage, but since LCD panels can only control the brightness of light, this mechanism is only effective for black and white images. If you want to present a colorful image, you also need to place a color filter in front of the liquid crystal molecular layer to add color to the bright and dark light. Therefore, in addition to the brightness of the backlight itself, the control of LCD molecules by the IC chip (operation close/open), as well as the quality of the LCD panel itself, as well as the opening rate and transmittance, will have a certain impact on the brightness of the LCD display.
Technology can help you control various factors of the high brightness backlight module, making the LCD panel readable in sunlight is no longer a problem. Firstly, we use high brightness lamps imported from Taiwan to achieve high brightness under constant current, with slow attenuation (most companies try to increase current to increase brightness, which can accelerate attenuation). Secondly, we use imported polarizers to reduce light loss and increase brightness. The third is to use optical binding.
Ruxin Gaoliang is committed to creating long-term value for our customers. We are a high-quality domestic LCD display manufacturer with 13 years of experience in research, development, production, and sales, specializing in various types such as high brightness screens, bar screens, and small-sized LCD screens. We provide one-on-one professional services for you.