LED small pitch (≤ P2.5) shows that the product has experienced a high growth rate of doubling every year from the birth to the present, and a large market growth pattern of Chinese manufacturers, which still maintains a high growth rate. According to research, 2018 The indoor small spacing (≤P2.5) market size is about 1.9 billion US dollars, the annual growth rate is as high as 39%, mainly from the continuous fermentation of the ultra-small spacing trend in the future, the estimated value will be 2018~2022 CAGR will reach 28%.
According to the dot spacing displayed by the small spacing of LEDs, the distance between the largest revenues of global LED small pitches in 2018 has reached P1.2~P1.6, accounting for 39%, with the demand of consumers for display effects. Gradually increase, with the further decline of cost, products with P1.2~P1.6 and smaller pitches below P1.1 will have the most growth momentum in the next few years. The CAGR of 2018~2022 is expected to reach 32% and 62% respectively. .
Global LED small pitch display market size estimate
In recent years, with the development of ultra-small-pitch display technology such as Mini/Micro LED, the market structure is slowly changing. In the field of ultra-small pitch (≤P1.0) display, domestic and foreign display manufacturers have successively introduced a pitch of P0. The products of .7~P0.9 are actively deployed in the field of ultra-small-pitch display, and even many traditional panel manufacturers have actively joined the business war of "competing the right to speak in the future", and have developed and launched related projects through capital and technology. Products, develop channels to seize the market.
According to the application scenarios of LED small-pitch display, it can be roughly divided into six categories: broadcast application, security monitoring, enterprise and education, retail, public area and transportation, hotel and theater. From the perspective of the proportion, the largest application of LED small-pitch display is from enterprises and education, accounting for 39%, followed by commercial retail, accounting for 19%; from the future growth rate, with the commercial display gradually mature The improvement of cost performance, it is estimated that these two markets will also be the application areas with the most growth space.
With the gradual shrinking of Pitch, for the traditional SMD package form, because the single LED device is too small, the processing accuracy and process difficulty are correspondingly increased, which is limited by the accuracy level of the existing equipment and supporting devices. The small pitch package mass production products are maintained at 0606 LED, which is close to its physical limit.
SMD and COB packaging technology structure comparison
Compared with SMD package, COB has many advantages, which can effectively avoid the problem of dead light and bad light caused by damp, static and other environmental or human factors in small-span LED of SMD package; uniform illumination, approximate surface light source, can effectively eliminate moiré Reduce glare and glare; compared with SMD through four solder joints, COB LED is directly mounted on the PCB, directly through the PCB board to dissipate heat, the heat dissipation effect is good; COB technology cancels the SMD bracket and SMT reflow soldering, no welding Risk, reliability, COB surface protection, can withstand greater external forces, thus reducing the cost of subsequent damage and repair. Of course, the current cost of COB will be higher. The RGB LED chip is placed on the PCB and fixed with black glue. The cost of mold opening is increased, and the cost after scale is expected to be reduced.
SMD and COB packaging technology display performance comparison
At present, display manufacturers are also actively researching and developing COB packages for small-pitch displays and launching related products, such as Lehman shares of domestic manufacturers. Currently, the product spacing of COB small-pitch displays is as follows: P0.9/P1.2 /P1.5/P1.9, point spacing above P0.5 can be achieved in the future. Compared with other display manufacturers, Lehman has more than ten years of experience in display manufacturing. The main advantage is that Lehman has 14 years of advanced LED packaging experience, and 4 years of COB technology research and development, relying on rich packaging and The display technology has accumulated experience, and its products have excellent performance in reliability, color saturation, color consistency, etc., and have been widely used in security, military, commercial and other fields.