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What is the general resolution of the led display?
What is the impact of led lamp beads on ?
1, size The size of the LED device affects the pixel point distance of the screen, that is, the resolution. 5mm oval lights are mainly used for outdoor display screens above P16, 3mm oval lights are mainly used for outdoor display screens of P12.5, P12, P10, and 3528 SMD LEDs are mainly used for indoor display screens of P6 and P8. 2020-type SMD LEDs are mainly used for indoor displays such as P2 and P3. Under the premise that the dot pitch is constant, the size of the LED device increases, which can increase the display area and reduce the graininess, but the reduction of the black area will reduce the contrast; on the contrary, the reduction of the LED size reduces the display area and the graininess increases. , The area of u200bu200bthe black area increases, which increases the contrast. The angle consistency characteristics of LED lamp beads can be measured with LED angle comprehensive tester, which is especially important for medium and high-end display screens. 2. Consistency The full-color display is composed of countless red, green and blue LEDs. The brightness and wavelength consistency of each color LED determines the brightness consistency and white balance consistency of the entire display. , Chromaticity consistency. Generally speaking, display screen manufacturers require device suppliers to provide LEDs with a wavelength range of 5nm and a brightness range of 1:1.3. These indicators can be achieved by the device supplier through the classification of the light-separation machine. The consistency of voltage is generally not required. Since LEDs are angled, full-color LED displays also have angular directionality, that is, when viewed from different angles, their brightness will increase or decrease. In this way, the angle consistency of the red, green, and blue LEDs will seriously affect the consistency of the white balance at different angles, and directly affect the fidelity of the video color of the display screen. To achieve the matching consistency of the brightness changes of the red, green, and blue LEDs at different angles, it is necessary to strictly carry out scientific design in the package lens design and raw material selection, which depends on the technical level of the package supplier. No matter how good the normal direction white balance is, if the LED angle consistency is not good, the white balance effect of the whole screen at different angles will be bad.
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