LED display screens occupy the mainstream market for large-size indoor and outdoor displays with its high brightness, weather resistance and large size, while CRT, liquid crystal display (LCD) and plasma display (PDP) are small and medium-sized, indoors and near. The viewing market is dominated by the viewing market.
LED displays have gained a lot of applications in advertising, stage, public information display, sports transportation facilities and other fields of use. The LED display screen is divided into indoor, outdoor and semi-outdoor LED display according to the use environment; it is divided into monochrome screen, two-color screen and full-color screen according to the display color; according to the selected device, it is divided into digital dot matrix screen, in-line LED screen and SMD type SMD screen.
This article describes the emerging outdoor full-color SMD display and its dedicated SMD device performance.
First, the main advantages of outdoor full color SMD display
As we all know, outdoor LED displays all use in-line elliptical red, green and blue LED devices a year or two ago, and in the past two years, outdoor full-color SMD displays with pixel spacing of 8mm to 16mm are being It has gradually emerged and is widely used.
In the past, because the brightness of the patch SMD was low, and the waterproof, moisture-proof, and anti-ultraviolet functions did not meet the requirements of outdoor harsh environments, the outdoor full-color display is the world of in-line LED devices. Full-color SMD SMD displays can only be used in large numbers indoors. With the advancement of LED chip technology and LED packaging technology, SMD's brightness and protection level can meet the needs of outdoor applications, and full-color SMD display has more full-color in-line LED display is difficult to achieve. Advantages, so get a faster application.
The advantages of outdoor full-color SMD display compared to outdoor in-line elliptical LED display are as follows:
1. Wide viewing angle
The outdoor full-color SMD display not only has a wide viewing angle of 110 degrees in the horizontal direction but also a wide viewing angle of 110 degrees in the vertical direction, which is particularly advantageous in some applications.
2, good light distribution
Red, green, and blue elliptical LEDs are consistently difficult to match at three different brightness levels, while full-color SMDs are three-in-one because of the design structure. Red, green, and blue chips are all in the chip. Among the bracket cups, the matching consistency of the three brightnesses of red, green and blue at different angles is highly uniform, so that the brightness of the outdoor full-color SMD display at any angle is very good. Better color vividness.
Figure 1 and Figure 2 below show the outdoor full-color SMD light distribution curve and the outdoor full-color elliptical LED light distribution curve. It can be seen from the comparison that the light distribution consistency of SMD has obvious advantages over elliptical LED.
Figure 1. Outdoor full color SMD horizontal direction light distribution curve
Figure 2. Outdoor elliptical LED horizontal light distribution curve