Discussion on the development of LED indoor display

In the past two or three years, the indoor high-density screen display technology and market structure are undergoing tremendous changes. Before 2009, the indoor large-screen display was basically based on projection display technology, mainly based on DLP splicing wall, edge fusion, and large-size projection. From the Samsung ultra-narrow LCD splicing panel market in 2009, to the competition camp of SHARP, LG, AUO and other flat panel splicing displays, the flat panel splicing display has sprung up and quickly occupied a place in the application fields of large-screen display. In 2011, flat stitching and DLP stitching entered a stage of full competition. However, the market structure is still undergoing further changes, and high-density LED displays have strongly entered the competition in the indoor large-screen display market. Guangzhou LED Exhibition in February 2012, Guangzhou Silicon Core launched 1.9mm high-density LED display unit, after more than 2 months, in May, Liard Optoelectronics announced the launch of 1.6mm products, one month later, this record is once again Ming refreshed, in June, Zhou Ming announced that it will mass produce 1.4mm high-density LED display unit.

Due to the price drop and the customer's pursuit of high-definition display, the 2013 P3 display product was promoted to one of the mainstream products of indoor display. The development of the indoor display in the high-definition direction has greatly promoted the market of LED display devices, and its main function as a display has emerged as a result - the patch lamp 2020.

英来黑韵 2020 lamp beads Ordinary 2020 lamp beads and Intel to Black 2020 lamp beads

The effect of LED lamp beads on the quality of LED indoor display

LED lamp bead is the most critical device for LED indoor display, and its quality plays an important role in determining the LED indoor display. LED lamp beads are used in the largest number of LED displays. There may be thousands or even tens of thousands of LED lamp beads per square meter. The LED lamp beads directly determine the performance and color saturation and sharpness of the LED indoor display.

First, LED indoor display brightness

The brightness of the LED lamp bead determines the brightness of the LED indoor display. The higher the brightness of the LED lamp bead, the larger the amount of current used, which is beneficial to save power consumption and keep the LED lamp bead stable. LED lamp beads have different angle values. When the brightness of the chip is fixed, the smaller the angle, the brighter the LED lamp bead and the smaller the viewing angle of the display. Generally, LED lamp beads with brightness of 100°-110° should be selected to ensure sufficient viewing angle of the LED indoor display.

Second, the failure rate of LED indoor display

The LED indoor display is composed of tens of thousands or even hundreds of thousands of LED lamp beads. The failure rate of the LED lamp bead will not be higher than one ten thousand even if it is aged for 72 hours.

Third, LED indoor display attenuation characteristics

As the LED lamp bead increases, the brightness will slowly decay. The decay speed of LED lamp bead brightness has a certain relationship with LED chip , auxiliary materials and packaging process. The consistency of the red, green and blue chip attenuation in the LED lamp bead has a great influence on the white balance of the LED indoor display in the future, which in turn affects the display fidelity of the LED indoor display.

Fourth, LED indoor display anti-static ability

Since the LED lamp bead is a semiconductor device, it is sensitive to static electricity and is liable to cause electrostatic failure. Therefore, the antistatic ability is very important for the life of the LED indoor display. Generally speaking, the human electrostatic mode test failure voltage of the LED lamp bead should not be lower than 2000V.

After 10 years of high-speed development of LED indoor display, the display requirements are getting higher and higher. A number of companies with packaging strength have emerged in the market, including listed companies, Guoxing Optoelectronics, Lehman Optoelectronics, etc. A group of emerging companies, Zhejiang Inteto Optoelectronics, Jingtai Optoelectronics and so on.

Fifth, the future development trend of LED indoor display

The market potential of LED indoor display is huge. With the introduction of industry standards and the concern of enterprises for product quality, more high-quality, high-definition LED indoor display will appear, gradually replacing the original low quality and low. Technical products. High-end LED indoor display will become the core product of LED companies in the future.

Throughout the development trend of LED in China, the LED industry has experienced five stages of “stationary period-development period-peak period-low valley period-mature period”. At present, the competition level of the domestic LED display industry is still at the early stage of product competition. The key indicators of competition are reflected in: price, quality, delivery period and after-sales service. The price elements are particularly prominent at this stage. As the market matures, after a period of market baptism, after the survival of the fittest, the company will have the financial strength and technical strength. These powerful companies will accelerate the pace of research and development of high-definition, high-density new products, which is bound to The LED indoor display is pushed to a new level of higher definition and higher density.