Cost reduction LED display application from the outside into the room
In the current global economic slowdown, the entire LED display industry may still face the pressure of slowing growth. Both large and medium-sized enterprises hope to reduce costs, especially for capital-intensive manufacturing companies. The most direct effect is to reduce the cost of capital.
On the evening of November 21, the central bank announced that it will cut the benchmark interest rate of RMB loans and deposits of financial institutions from November 22, and LED shows that the benchmark interest rate of one-year loans of financial institutions will be lowered by 0.4 percentage points to 5.6%; the one-year deposit benchmark interest rate The downward adjustment is 0.25 percentage points to 2.75%; the benchmark interest rate for loans over 5 years is 6.15% (previously 6.55%), and the interest rates of other grades are adjusted accordingly.
Industry analysts pointed out that this shows a significant cooling of the current economy. Regardless of time or perspective, the current round of interest rate cuts has not yet passed, and the stimulus for economic growth remains to be seen.
In the current global economic slowdown, the entire LED display industry may still face the pressure of slowing growth. Both large and medium-sized enterprises hope to reduce costs, especially for capital-intensive manufacturing companies. The most direct effect is to reduce the cost of capital.
In 2014, the LED display field presented three major characteristics:
1. In the first half of 2014, China's LED display market changed little compared with last year. The orders of enterprises are relatively stable, but many SMEs' profits are in a low-profit state, and there is a general problem of difficult payment. The “triangular debt†is still the LED display. A common problem in the industry.
2. The new market segment has become a new growth point for LED display companies. The outdoor advertising media, indoor small spacing and other market segments still maintain good growth, making the LED display industry maintain a certain growth. Such as Lehman Optoelectronics layout sports media field.
3, LED display "small era" - small pitch LED screen. The world's major LED manufacturers began to compete to launch their own small-pitch strategy, and the prospects for small-pitch LED products are also optimistic at home and abroad. Among them, the high-density small-pitch LED display is an important emerging market in the industry, and it is also one of the markets with high profit margins.
From indoor to outdoor, the cost of LED display is reduced. With the shrinkage of LED full-color display packaging devices, the cost of the whole screen is rapidly decreasing, and the products with smaller spacing are constantly entering the market. The application of LED display begins to enter from the outside. indoor.
The outdoor display and the indoor display have different requirements for the display screen due to different application environments, and the resolution, that is, the pixel pitch is an important factor. For the LED display, each self-illuminating packaged device, the lamp bead, is a pixel, so the distance between the two bead determines the resolution of the LED display per unit area. Generally, the industry will indicate the model number of the product by the distance between the beads. For example, the P10 product indicates that the distance between the two beads of the screen is 10 mm (mm).
Because the outdoor space is large, the viewing distance of the audience is generally far, and the human eye has a certain resolution limit. Therefore, even when the distance between the LED display screens is far away, the requirements can be met. Since the indoor space is limited, the viewing distance is generally smaller than that of the outdoor. Therefore, a display with a smaller dot spacing can satisfy the user's requirement for resolution, otherwise the viewing effect will be affected.
On the one hand, because the human eye has a certain ability to resolve, in theory, the minimum pixel spacing that can be resolved by the human eye under a certain viewing distance can be calculated by the human eye imaging principle.
In the case of normal brightness and contrast, the limit of the human eye's ability to resolve pixels is about 1' (1/60 of 1 degree angle, called 1 point), assuming that the screen height is H, the viewing distance is D, and the screen height When the direction resolution is n, the pixel pitch is H/n, and the angle of view formed in the human eye is arctg(H/n/D). If the angle of view is less than 1', it exceeds the resolution limit of the human eye.
Therefore, for the small-pitch LED display, the cost of the lamp bead is already high, so the price of the lamp be dropped rapidly, which helps to promote the popularity of the product.
Another convenient reference to the development of the mature semiconductor industry, we can expect that the manufacturing cost of LED devices will continue to decline in the next 10 years. The main cost savings contribution will focus on three factors:
1) The size of the processing wafer is doubled. From the current mainstream 2 inch wafer to 4 inch, the processing cost of the chip process will be greatly reduced. The price of the chip directly restricts the price of the LED display;
2), the advancement of core equipment manufacturing technology will double the production efficiency, thereby significantly reducing the cost of depreciation, the most typical is the GaN epitaxial MOCVD equipment;
3) The expansion of the industrial scale will significantly reduce the cost of raw materials consumed and the overall management costs. Based on these factors, it can be expected that the cost of LED chips will continue to decrease in the next 10 years, which will further stimulate the development of emerging LED applications.
The above three links are important factors in controlling the cost of LED display. It is believed that with the development of LED technology and the improvement of equipment, the price of LED display will be lower and lower in the future, and the penetration rate in the society will be higher and higher.
On the evening of November 21, the central bank announced that it will cut the benchmark interest rate of RMB loans and deposits of financial institutions from November 22, and LED shows that the benchmark interest rate of one-year loans of financial institutions will be lowered by 0.4 percentage points to 5.6%; the one-year deposit benchmark interest rate The downward adjustment is 0.25 percentage points to 2.75%; the benchmark interest rate for loans over 5 years is 6.15% (previously 6.55%), and the interest rates of other grades are adjusted accordingly.
Industry analysts pointed out that this shows a significant cooling of the current economy. Regardless of time or perspective, the current round of interest rate cuts has not yet passed, and the stimulus for economic growth remains to be seen.
In the current global economic slowdown, the entire LED display industry may still face the pressure of slowing growth. Both large and medium-sized enterprises hope to reduce costs, especially for capital-intensive manufacturing companies. The most direct effect is to reduce the cost of capital.
In 2014, the LED display field presented three major characteristics:
1. In the first half of 2014, China's LED display market changed little compared with last year. The orders of enterprises are relatively stable, but many SMEs' profits are in a low-profit state, and there is a general problem of difficult payment. The “triangular debt†is still the LED display. A common problem in the industry.
2. The new market segment has become a new growth point for LED display companies. The outdoor advertising media, indoor small spacing and other market segments still maintain good growth, making the LED display industry maintain a certain growth. Such as Lehman Optoelectronics layout sports media field.
3, LED display "small era" - small pitch LED screen. The world's major LED manufacturers began to compete to launch their own small-pitch strategy, and the prospects for small-pitch LED products are also optimistic at home and abroad. Among them, the high-density small-pitch LED display is an important emerging market in the industry, and it is also one of the markets with high profit margins.
From indoor to outdoor, the cost of LED display is reduced. With the shrinkage of LED full-color display packaging devices, the cost of the whole screen is rapidly decreasing, and the products with smaller spacing are constantly entering the market. The application of LED display begins to enter from the outside. indoor.
The outdoor display and the indoor display have different requirements for the display screen due to different application environments, and the resolution, that is, the pixel pitch is an important factor. For the LED display, each self-illuminating packaged device, the lamp bead, is a pixel, so the distance between the two bead determines the resolution of the LED display per unit area. Generally, the industry will indicate the model number of the product by the distance between the beads. For example, the P10 product indicates that the distance between the two beads of the screen is 10 mm (mm).
Because the outdoor space is large, the viewing distance of the audience is generally far, and the human eye has a certain resolution limit. Therefore, even when the distance between the LED display screens is far away, the requirements can be met. Since the indoor space is limited, the viewing distance is generally smaller than that of the outdoor. Therefore, a display with a smaller dot spacing can satisfy the user's requirement for resolution, otherwise the viewing effect will be affected.
On the one hand, because the human eye has a certain ability to resolve, in theory, the minimum pixel spacing that can be resolved by the human eye under a certain viewing distance can be calculated by the human eye imaging principle.
In the case of normal brightness and contrast, the limit of the human eye's ability to resolve pixels is about 1' (1/60 of 1 degree angle, called 1 point), assuming that the screen height is H, the viewing distance is D, and the screen height When the direction resolution is n, the pixel pitch is H/n, and the angle of view formed in the human eye is arctg(H/n/D). If the angle of view is less than 1', it exceeds the resolution limit of the human eye.
Therefore, for the small-pitch LED display, the cost of the lamp bead is already high, so the price of the lamp be dropped rapidly, which helps to promote the popularity of the product.
Another convenient reference to the development of the mature semiconductor industry, we can expect that the manufacturing cost of LED devices will continue to decline in the next 10 years. The main cost savings contribution will focus on three factors:
1) The size of the processing wafer is doubled. From the current mainstream 2 inch wafer to 4 inch, the processing cost of the chip process will be greatly reduced. The price of the chip directly restricts the price of the LED display;
2), the advancement of core equipment manufacturing technology will double the production efficiency, thereby significantly reducing the cost of depreciation, the most typical is the GaN epitaxial MOCVD equipment;
3) The expansion of the industrial scale will significantly reduce the cost of raw materials consumed and the overall management costs. Based on these factors, it can be expected that the cost of LED chips will continue to decrease in the next 10 years, which will further stimulate the development of emerging LED applications.
The above three links are important factors in controlling the cost of LED display. It is believed that with the development of LED technology and the improvement of equipment, the price of LED display will be lower and lower in the future, and the penetration rate in the society will be higher and higher.
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