The stand or fall of full-color led display from what respect to judge - LED display - knowledge

How to identify a full-color led display is good or bad? Manufacturers to talk about the following: 1. Flatness of the led display surface roughness to within + / - 1 mm, to ensure that the display image is not distorted, local convex or concave leads to display the visual Angle of blind Angle, the stand or fall of flatness is mainly decided by the production process. 2. Brightness and the viewing Angle of indoor full color brightness to above 800 CD/m2, outdoor full color brightness to above 1500 CD/m2, to guarantee the normal work of the screen, otherwise it will because the brightness is too low and can not see clearly shown in the image, the size of the brightness of the main is determined by the stand or fall of LED lamp bead, directly depends on the size of the visual Angle of LED display how many of the audience, and the bigger the better, the size of the viewing Angle is mainly composed of tube core encapsulated way to decide. 3. White balance effect white balance effect is one of the most important indicator led display, the color red, green, blue three primary colors to learn the proportion is 1:4. Lost. 16 will only show the pure white, if the actual rate is a little deviation will appear white balance deviation, generally pay attention to whether there is a slant blue, white partial yellow-green phenomenon, the stand or fall of the white balance is mainly composed of led display control system to determine, lamp bead of color reducibility may also be affected. 4. There are many different kinds of product design and full color led display, indoor outdoor energy-saving highlighting high refresh portable products, such as in all walks of life have different requirements for led display, so buyers in distinguish abundance when choosing led display and led display, to gather their demand to the maximum extent led display products are fit with your demand. 5. Led display belongs to the application of industry production technology, unlike chip led lamp belongs to the aggregate industry needs a large number of advanced equipment and the high requirements of the production environment, so the production process mainly inspects the production environment, equipment type and brand details such as ( Do not think that the more equipment, the better) 。 6. The reducibility of color reducibility refers to the reducing of color led display, led display shows both the colors to maintain highly consistent with the colour of the source, so as to ensure the image sense of reality. 7. Material control: material selection, is crucial to the stand or fall of, choose high quality raw materials to keep control of LED display quality at source. So for the buyers at the point. ( 1) High-grade on behalf of the subfamily sharp (led lights: Chip packaging) Mid-range wafer light lei silan ( Chip) Led lights led high industrial chain involved, especially involving more domestic packaging industry, the same wafer silan chip led quality varies due to the different of the packaging, not pure, high product of led lamp encapsulation tube representative for light ( Taiwan) The star of lehman. ( 2) Led driver IC: macroblock as a global leading manufacturer of led driver, the no. 1 led display driver in the world for many years, the led display driver domestic by more than 60%, more than 50% of the world's market share is accumulated 5024 mostly choose middle-grade led display products. ( 3) Power supply ( Enhanced) : power supply is to undertake the main components of the power cord connected to the PCB, although not decided to led display the main aspects of quality, but its strong durability, conductive performance and so on also affects the life of the display screen and protection grade. ( 4) Row needles ( With simple horn) : row needles through the wiring connection control system and the main components of control circuit of PCB, preferred with horns row needle, not only make the loading screen when prevent wiring plug caused rework, can effectively prevent row needles exposed more loading screen and maintenance personnel. ( 5) Resistor, capacitor and other components: as the saying goes, in detail, with full color led display often switch machine, the stand or fall of capacitance also affects the switch machine to protect the display screen, when resistance is to control the display current main components, optimizing big brand products. ( 6) Led module masks and pan: main material for plastics. Imported high quality materials, deformation, strong resistance to environment.