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LED basic knowledge (2)
Sep 26, 2023 View : 1282

What is maximum brightness?

Under a certain ambient illumination, the brightness value of each primary color of the LED display at the maximum brightness and maximum gray level

What is a PCB board?

PCB is a printed circuit board (Printed Circuit Board). It is an important electronic component, a support for electronic components, and a provider of electrical connections for electronic components. Because it is made using electronic printing, it is called " A printed circuit board.

What is BOM?

BOM is the abbreviation of Bill of material, which refers to the detailed list of parts and their structure required for the product.

What is white balance? What is white balance adjustment?

White balance is an indicator that describes the accuracy of the white color produced by mixing the three primary colors of red, green, and blue in the display screen, that is, the balance of the brightness of the three colors R, G, and B in a 3:6:1 ratio: G, B The adjustment of the brightness ratio of the color and the white coordinate is called white balance adjustment: White balance requires that the three primary colors synthesized under the same blending value are still pure white. As far as LEDs are concerned, generally ICs will design and adjust the current size. function, so that different batches of LEDs can achieve the same white light effect.

What is contrast?

Under a certain ambient illumination, the measurement of different brightness levels between the brightest white and the darkest black in the light and dark areas of the LED display

What is color temperature?

When the color of light emitted by a light source is the same as the color of light radiated by a black body at a certain temperature, the temperature of the black body is called the color temperature of the light source

What is frame rate?

The number of times the display screen information is updated per unit time.

What is refresh frequency?

That is, the number of times the image on the screen appears per second, and its unit is Hertz (Hz). The higher the refresh frequency, the less flicker the image on the screen will feel and the higher the stability.

Viewing angle

There are two viewing angles: one is the angle of the LED light; the other is the angle of the screen. The angle of the LED is the angle formed by the two viewing directions on the same plane and the normal direction when the maximum brightness in the viewing direction drops to 1/2 of the brightness in the normal direction of the LED display. After testing, the lighting angle of our LED is: :Outdoor: 120°/60°, Indoor: 140°/140°. The angle of the screen is the angle at which the brightness of the three colors R, G, and B in one pixel is mixed into the brightness of white light.



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