Figure 1. Lianjian Optoelectronics VM1.9, VM1.6, and VM2.0 all use the high-end chip MBI5153, which has high picture flatness.
Figure 2, Dongshan Precision P2.5 uses accumulation technology high-end chips
MBI5153, the display effect screen color is saturated.
At the same time of the exhibition, Lusheng Optoelectronics Co., Ltd., a wholly-owned subsidiary of the listed company Dazu Laser (002008), held a new product launch conference for small dot spacing display. Lusheng Optoelectronics mainly publishes medium and high-end P3 and P4 products, and is equipped with MBI5153 and MBI5124, which are used to accumulate small dots. Zhang Huabin, sales director of Lusheng Optoelectronics, mentioned the phenomenon of bad money driving out good money in the market. Because the terminal buyers don’t know much about the product specifications, the price is used as the selection indicator, which leads to the production of high-standard small-pitch display manufacturers on the market. Hard to survive. Therefore, Lusheng Optoelectronics emphasizes the difference between the box, LED lights, waterproof glue, etc., compared with the low-end products on the market, and through the introduction of the in-depth explanation, let the guests understand the value of Lusheng products; Its partner, Accumulation Technology, introduces the audience to the core of the dot-pitch display: the driver chip.
Figure 3, Zhang Huabin, Sales Director of Lusheng Optoelectronics, introduced the middle and high-end P3 and P4 products.
Emphasis on display excellence
Figure 4, Director of Accumulation Technology Qiu Yuxiang introduces the MBI5153 to the small dot pitch display. Advantages: Solving the six challenges
Qiu Yuxiang, Director of Product Marketing Strategy of Accumulation Technology, said that the new product released by Lusheng is the use of the accumulation MBI5153 and MBI5124 (see Figure 5 for comparison of the effect). Compared with other driver chips on the market, it has the following features:
1. MBI5153 main force is applied to road-level products.
a. Eliminate ghosting (smear) phenomenon b. Solve white balance red, first line sweep dark, gradient dark line, low gray unevenness c. With the current market, the only cross phenomenon that can eliminate LED dead pixels.
2. MBI5124 main force is applied to the road-lifting mid-level product a. Eliminating the small dot spacing display multi-row scanning application, causing ghosting (smear) phenomenon b. Without lowering the gray level, the refresh rate is higher than The basic chip.
Note: The six challenges of the so-called small dot spacing display are: ghosting, white balance red, first line sweeping dark, gradual dark lines, low gray unevenness and cross phenomenon caused by LED dead spots. The MBI5153 is the only LED driver chip on the market that can solve six major challenges.
Figure 5, his card basics vs. MBI5124 vs. MBI5153 picture effect comparison icon.
Table 1. Comparison table of accumulated small dot pitch driver chip scheme, MBI5153 has all necessary functions
In addition, for the screen display effect, it is also necessary to pay attention to the current accuracy. Once the current offset is greater than ±6%, unevenness will appear (left panel of Figure 6). Especially when entering the dot pitch market, the effect of current offset is greater. The application current of the small dot pitch is less than 5 mA. Taking P2.5 as an example, most of the current is controlled between 3 mA and 5 mA, but if it is pushed below P2.5, the applied current will fall below 3 mA. However, such a small current, control current offset will be a major challenge for the driver chip, currently on the market can really achieve a current output between 1mA-3mA, still maintain high current accuracy. As shown in the figure above in Figure 7, MBI5124 emphasizes that the application current is 1mA-25mA. It can be found at 1mA that all chips meet the current accuracy range disclosed in the specification. Compared with competing products, the application current range is 0.6mA-45mA, but When measured at 1 mA, a considerable proportion of defective products appear. In practical applications, the driver chip with a large current offset may have uneven current in units of driving chips, which affects the picture quality.
Figure 6, chip current offset vehicle > ± 6%, there will be uneven brightness of the block in the driver chip unit;
Chip current offset <±3%, the picture is flat
Figure 7. The current offset of the MBI5124 chip falls within 1mA (above). Compared with the competitor, the application current range is 0.6mA-45mA (below), but it is measured at 1mA, but a considerable proportion of defective products are found.
Entering the dot-pitch display market is a challenge for the display manufacturer's manufacturing process and a moment for the driver chip to show its value. In the pursuit of high-quality LED display, the accumulation shoulders the responsibility of upgrading technology and understanding of market demand, and working with like-minded partners to establish a high-quality LED dot spacing display standard. (This article is the accumulation of technology contribution)
Using a high thermal conductivity aluminum substrate as a circuit board,Pure light color, good heat dissipation, low heat generation and good heat dissipation.
Low light decay, can save you more than 90% of electricity costs.Long life, maintenance-free.
The surface installation is simple and convenient, and the illumination angle can be adjusted according to the installation environment.
High grade, aluminum alloy shell, anodized surface, beautiful appearance, high grade, specially designed for jewelry and other showcase lighting.
Surface Mounted Hard Shell LED Strip
Outdoor Light,Hard LED Strip,Surface Mounted Hard LED Strip,Surface Mounted Hard Shell LED Strip
SHEN ZHEN SEL LIGHTING CO.,LTD , https://www.sel-lighting.com