The machine in this classification mixed materials of various kinds, in the mixer is flipped, kneading, extrusion and convection, make all kinds of materials can be evenly mixed together, achieve the standard.
The equipment has the advantages of reasonable
design, compact structure, simple operation and convenient maintenance.
Vacuum Mixer,Vegetable Mixer,Powder Mixer,Mixing Machine QINGDAO HK MACHINERY AND EQUIPMENT CO.,LTD , http://www.hk-machinery.com
LCD splicing screen brightness is determined by the LCD panel, but at present in China, can not produce LCD splicing panel. Last year, China's first production of LCD panel production line, BOE 6.5 generation line can only cut the following 37-inch LCD Panel for small-size LCD TVs and computer monitors. Therefore, no matter which manufacturer you use to produce the LCD splicing screen, as long as the other party uses the Samsung LCD panel, the hard parameters such as the brightness and contrast are all we cannot change. Therefore, before choosing, you must buy different brightness LCD splicing screen according to your own needs. 
The 7 factors that affect the brightness of the LCD splicing screen:
1. Effect on Brightness The brightness of a fine-pitch LCD splicing screen depends on the size of the current flowing into the LED lamp beads and the brightness performance of the LED lamp beads. The greater the current used by the LED lamp bead, the greater the luminous brightness of the fine-pitch LCD splicing screen. The high-quality LED lamp beads have a good light conversion rate, and a very small current can be used to emit high-brightness light, which saves energy. It is beneficial to keep the fine-pitch liquid crystal splicing screen stable.
2, the impact on the rate of out of control Because the micro-pitch LCD splicing screen consists of tens of thousands or even hundreds of thousands of pixels composed of red, green, and blue LED, the failure of any color LED will affect the overall visual effect of the display. In general, according to industry experience, the failure rate before the LCD splicing screen is assembled to 72 hours before aging should be no higher than three ten-thousandths (the failure caused by the LED lamp itself), high-quality LED lamp beads The failure rate is very low. The fine-pitch LCD splicing screen with high-quality LED lamp beads can control the rate of out-of-control at less than 100,000 times.
3. Effect on service life The theoretical life of LED lamp beads is 100,000 hours, which is much longer than the working life of other components of the micro-pitch LCD splicing screen. Therefore, as long as the quality of LED lamp beads is guaranteed, the operating current is appropriate, the PCB thermal design is reasonable, and the display screen The production process is rigorous. The LED lamp bead will be one of the most durable parts of the display screen. The use of high-quality LED lamp beads can achieve a life span of up to 100,000 hours for a fine-pitch LCD panel with an MTBF of up to an average. 50,000 hours.
4. Effect on the viewing angle The viewing angle of the micro-pitch LCD splicing screen is determined by the viewing angle of the LED lamp beads. At present, most of the indoor display screens use horizontal/vertical LED lights with an ultra-wide viewing angle, so that the horizontal/vertical viewing angle of the fine-pitch liquid crystal splicing screen can reach a viewing angle of 160 degrees.
5. Effect on the pitch of the pixels The size of the LED lamp beads affects the pixel pitch and the resolution of the entire LCD screen. SMD0707 type LED lamp beads are mainly used in P1.5 below the fine-pitch LCD splicing screen, SMD1010 LED lamp beads are mainly used for P1.6, P1.9, P2.0 fine-pitch LCD splicing screen, SMD2121 LED lamp beads are mainly used In P2.5, P3 fine pitch LCD splicing screen. Under the premise of constant dot pitch, the size of the LED lamp beads increases, which can increase the display area and reduce the graininess. However, as the area of ​​the black area is reduced, the contrast is reduced; on the contrary, the LED lamp beads are reduced in size and the display area is reduced. Increased graininess, increased black area, increased contrast.
6, the impact of the brightness / chromaticity / white balance consistency Micro-pitch LCD splicing screen is composed of a myriad of red, green and blue LED pixels, the brightness of each color LED, the consistency of the wavelength determines the entire Display brightness uniformity, white balance consistency, color consistency. In general, display manufacturers require device vendors to provide LED beads with a wavelength range of 5nm and a brightness range of 1:1.3. These specifications can be achieved by the device supplier using a spectrophotometric separator. Since the LED lamp beads are angled, the fine-pitch liquid crystal splicing screen also has angular directionality, that is, its brightness increases or decreases when viewed at different angles. In this way, the consistency of the angles of the red, green and blue LEDs will seriously affect the consistency of the white balance at different angles and directly affect the fidelity of the video color of the display screen. To achieve consistent matching of brightness changes of red, green, and blue LEDs at different angles, it is necessary to strictly design the package lens design and raw material selection, depending on the packaging vendor's technical level. The display with even white balance in the normal direction, if the LED lamp beads have poor consistency in angle, the white balance effect of the entire screen at different angles will be bad. The LED lamp bead angle consistency characteristics can be measured with an LED angle comprehensive tester, which is particularly important for medium and high-end displays.
7, the impact of anti-static ability LED lamp beads are semiconductor devices, sensitive to static electricity, easily lead to electrostatic failure, so the anti-static ability of the display screen is critical to the life. High-quality LED lamp beads can withstand 50Hz, 1500V (AC rms) test voltage for 1 minute without insulation breakdown. 8. Effect on the attenuation characteristics The phenomenon of decreased brightness and inconsistent color of the display will occur after the LCD splicing screen is operated for a long time, which is mainly caused by the attenuation of the brightness of the LED lamp beads. Attenuation of LED lamp brightness will result in reduced screen brightness. The inconsistency of the brightness attenuation of the red, green, and blue LEDs will cause inconsistencies in the color of the LCD splicing screen, which is what we often say about the display screen. High-quality LED lamp beads can well control the brightness attenuation. According to 1000 hours normal temperature light 20mA standard, red attenuation should be less than 2%, blue, green attenuation should be less than 10%, so blue, green LED display screen design do not try to use 20mA current, it is best to use only 70% to 80 % of rated current. In addition to the attenuation characteristics of red, green, and blue LEDs, the use of current, PCB board thermal design, and the ambient temperature of the display panel all contribute to the attenuation.
The above 7 points, with up to 99% of the light utilization, power consumption is only less than half of the DLP and LCD, energy saving and environmental protection, easy maintenance, such outstanding performance, Aidi's LCD splicing screen to win the majority of users recognized, Can lead the market trend. Emperor Edi continuously researches and develops innovative technologies, upgrades product quality, and optimizes the quality of service. Di Edi is committed to becoming a leading brand in the field of commercial display! 
What factors will affect the brightness of LCD splicing screen?
Currently, LCD large-screen display is a popular product in the display field. It is believed that most users are familiar with the latest 3.5mm ultra-narrow edge 46-inch LCD splicing screen, but when it comes to 3.5mm ultra-narrow splicing screen, there are 700cd. /m2 with 450cd/m2 points, most people may be confused.