LED display innovation continues
In the increasingly developed and mature liquid crystal display industry chain, the labor-intensive characteristics and relatively low entry threshold of the LED backlight industry have LED to an extremely fierce competition in the backlight industry. On the one hand, upstream key materials such as optical films are still in the hands of a few manufacturers, the price of materials is difficult to fall, and the cost of products remains high; On the other hand, it is also facing the pressure of downstream customers to continuously demand price cuts. Under the huge pressure at both ends of the industrial chain, the profit margin of backlight module products is getting smaller and smaller, and the operation and survival of some manufacturers, especially second-tier manufacturers, are becoming more and more difficult. How to improve product competitiveness through technological innovation has become a life-and-death issue for LED backlight enterprises. In what areas has LED innovated, at present, the overall technological innovation direction of LED display application industry mainly focuses on intelligent control of large screen, development of new high-density display products, engineering design of special LED display application, expansion of LED display application products, and product reliability and energy saving. and so on. New requirements are constantly put forward for LED chip materials in terms of wavelength consistency and antistatic capability. At the same time, the requirements for driver chips and LED packaging technology are also constantly improving. The market scale of high-density and small-pitch LED display screens in indoor and outdoor applications is continuously expanding, becoming a new market growth point, especially indoor high-density and small-pitch LED display screens. With the P1. With the emergence of series 0 products, indoor LED display screens with high density and small dot spacing are popular in conference demonstration screens, indoor information display and other applications, and have begun to replace some traditional indoor display products. These applications put forward higher requirements for the overall reliability and stability of the system. For applications such as security, monitoring, command and dispatch centers that currently have huge holdings, indoor high-density small-point spacing products should replace traditional DLP or LCD products, it also needs to solve a series of problems such as high gray scale control under low brightness, extremely low pixel out of control rate, high reliability of pixel points, intelligence of video image processing and playing, and combination and display of super-large pixel images. These problems require collaborative innovation between the upstream and downstream of the industrial chain, close cooperation in technology to meet application requirements, and joint development to solve related technical bottlenecks. The development trend of LED display screen the following trends are worthy of attention: first, full color, high definition display, intelligent and networked control. Indoor display screens are mainly developed in the direction of full color, small dot spacing and high density, and are expected to continuously replace traditional display products in a wider range. Outdoor display screens are mainly developed for large-area, high-definition, special-shaped products and engineering design, which will meet the needs of various outdoor display applications to a greater extent. The second is the standardization of basic technology, diversified application requirements and personalized product design. The specialized division of labor has gradually become clear, the industrial chain has been innovated collaboratively, and multiple industries have been promoted collaboratively. Enterprises pay more attention to differentiated products, subdivide market focus, shape brand connotation and enhance core competitiveness. The third is the professional solution of Display System Engineering, multi-technology and multi-system integration. Facing the increasingly complex system application requirements, the display application industry will develop from single product provision to display system engineering construction. Providing professional display system solutions for industry applications, industry needs, services and technical support will become an important development direction of the industry. How to reduce the cost of small-pitch LED display screen? At present, small-pitch LED has high requirements on manufacturers in terms of technology and technology, and higher technical threshold also leads to higher production cost. How to reduce the cost, one is to reduce the cost through the packaging process, specifically including large-scale procurement, especially the chip procurement can choose high quality and low price suppliers. The second is the continuous improvement of the process. Guoxing optoelectronic research and development center is specially equipped with research and development team to be responsible for continuous improvement and optimization of production process. Scientific and reasonable process management and production line control can greatly reduce the defective rate. The third is the scale effect. At present, the shipment volume of Guoxing photoelectric display devices is larger than that of mainland enterprises, and 1010 of our products are also small-pitch LED products that are mass-produced by domestic enterprises. In response to the challenges of OLED and LED display, even in the field of LED display, the competition between OLED and LED is also faced. Mainstream enterprises all agree on the indicator of color gamut. Color gamut, or color saturation, refers to the ability of the display to restore natural colors. The higher the color gamut, the brighter the displayed image and the closer it is to the natural real color. Generally, the color gamut of liquid crystal display is about 72, while the color gamut of OLED can reach more than 100. How to improve the color gamut of LED backlight liquid crystal display? One is to use a new narrow half-wave wide red and green powder combination with a color gamut of about 85; The second is to add green chip compensation, the color gamut can reach more than 95; Third, the quantum dot phosphor scheme can achieve more than 100 color gamut. There are ways, but they all have their own limitations. Qiao Mingsheng, technical director of Qingdao Hisense Electric Co. , Ltd. , said that the implementation of this scheme is relatively simple and the cost is relatively low, but the achievable color gamut value is also low; The second two-color chip solution can achieve a relatively high color gamut value, but the driving is complex and the life of the two chips is inconsistent; The third quantum dot technology scheme can achieve a high color gamut value, but it also has high requirements for material packaging and cannot meet the requirements of environmental protection for the time being. Improving color gamut is only one of our efforts. Ultra-thin body, ultra-narrow frame, high brightness, ultra-low power consumption and curved surface are all countermeasures for LED backlight liquid crystal display technology to meet the challenges of new technologies. The final goal is to promote continuous cost reduction through technological innovation and win market space with high cost performance. Many experts have reached a consensus on the development direction of backlight technology.
