Today, let's discuss "high-definition small-pitch indoor LED display"; we all know, everyone should understand, a high-definition indoor LED display is generally the LED display in the room with a guide distance of less than 2 mm, commonly known as "small space LED display". Spacing" high-definition display.
Today's popular high-definition room LED display models and specifications on the market are P1.25, P1.567, P1.667, P1.875, P1.923, P2, etc. The interface played by the LED display in the high-definition room has high definition consistency, rich and colorful interface appeal, colorful and meticulous colors, and a high degree of appreciation. It is difficult for traditional display systems to guarantee this. Therefore, most manufacturers feel that high-quality and reliable high-definition indoor LED displays will have a broader development prospect than traditional displays. Come out, I will analyze the key points of the LED display in the high-definition room from several aspects:
1. The LED display in the high-definition room has completed "low brightness and high gray"
The human body induction lamp is different from the outdoor display regulations of high brightness, refresh rate and environmental protection, and energy saving. The indoor display must reduce the brightness. The test inspection shows that from the perspective of the iso sensitivity of human eyes, LED (active light source) The brightness of the LED is 2 times that of the passive light source (projector and LCD screen). In terms of actual data information, the best brightness of small-pitch LEDs entering the room is 100-300cd/m2. For example, when the brightness of the display screen drops to 30% of the original brightness, it means that there is no damage to the grayscale of the interface; and when the brightness is reduced to 20% or even 15%, the grayscale damage is not great, indicating that the interface is still clear. visible. This is now operated with integrated ic, and high-brush integrated ic is selected; reducing the grayscale damage caused by brightness must be carried out according to technical filling.
2. Standard screen resolution of LED display with signal source in the high-definition room
Different from the outdoor display, the outdoor billboard will select the appropriate content to play the video according to the screen resolution of the display screen, and the signal source in the room has certain specifications. The source is integrated into the screen resolution of the display screen, but it is only necessary to integrate the requirements of the signal source in the room, carry out the design scheme and ensure the relative screen resolution, and then meet the requirements of the customer's needs.
3. High-definition indoor LED display is suitable for multi-signal and complex signal system software access and display control
The small-pitch LED display shows that the signal is compared with the outdoor signal. The characteristics of the LED display in the room are multi-signal access and complex signal access. For example, a multi-site video conference system must be remotely controlled. Access signal, local access signal, and Many people use to access, and the test shows that it is easy to complete multi-signal access according to the split screen plan, which will reduce the signal specification. Therefore, how to solve the problem of multi-signal and complex signal access must also be technically applied to small-pitch LEDs.
4. High-definition indoor LED display completes seamless stitching and high-speed calibration
One of the advantages of small-pitch LED displays is seamless splicing, but the requirements for splicing are higher. For LCD screens, as long as the seams are well-proportioned, there is no problem, and the seams are not obvious. However, the small spacing of LEDs is not good. If the middle of the touch group is squeezed too tightly, bright lines will occur, and when the touch group leaves, bright lines will occur. It's not easy to put together the truth. Therefore, the machining process and calibration technology of the housing and its high efficiency and good fusion must be ensured.
5. The LED display in the high-definition room reduces the dead light rate and ensures the reliability of the LED transparent screen
The traditional LED dead light rate is 1/10,000 in the national standard, but small-pitch LEDs may not be able to do it at this stage. If the traditional standard is followed, there will be a dead light in 10,000 square meters, and the display will not be able to see. Pass. Therefore, the dead light rate of the small-pitch LED display must be controlled to one in 100,000 or even one in a million to meet the requirements of long-term applications. Otherwise, after some time, the whole screen is full of dead lights. The customer is unacceptable. Therefore, it is necessary to ensure the reliability of all normal applications of the led transparent screen.
