Led display is one of our common large screens. LED electronic screen is the most promising display in the future. Since 2008, in a few short years, LED screens have displayed many functions and effects. Today, no matter Whether outdoors or indoors, led displays have been recognized by people. For the production of led display screens, as a customer, how do you make an acceptance standard for display screens?
The acceptance of outdoor display screens generally starts from 6 aspects: color reducibility, color patch color difference, mosaic phenomenon, brightness and viewing angle, and white balance effect. 1. Reducibility of the color Reducibility of color refers to the reproducibility of the display screen to color, and the color of the display screen should be highly consistent with the color of the playback source, so as to ensure the realism of the image.
Second, there is no color block color block refers to the adjacent module there is a more obvious color difference, the color of the transition to the module as a unit, causing the color block phenomenon is mainly due to poor control system, gray level is not high, scanning The frequency is lower. Third, whether there is no mosaic, dead point phenomenon mosaic refers to the display on the regular or often dark small four-square, both module necrosis phenomenon, the main reason for the display connector quality used but off. The dead point refers to a single point that appears on the led display screen, which is always bright or dark. The dead point is mainly determined by the quality of the die. Fourth, flatness The flatness of the LED display surface should be within ± 1mm, in order to ensure that the display image is not distorted, local raised or recessed will cause the display's viewing angle to appear dead. The flatness is mainly determined by the production process. Fifth, brightness and viewing angle Indoor full-color screen brightness to 800cd/m2 or more, outdoor full-color screen brightness to 1500cd/m2 or more, in order to ensure the normal operation of the display, otherwise it will be too low to see the brightness The displayed image. The brightness is mainly determined by the quality of the LED die. The size of the viewing angle directly determines the number of display audiences, so the bigger the better. The size of the viewing angle is mainly determined by the packaging method of the die.
6. White balance effect White balance effect is one of the most important indicators of the display. In color science, when the ratio of the three primary colors of red, green, and blue is 1:4.6:0.16, pure white color will be displayed. If the actual proportion is slightly different, there will be a white balance deviation. Generally, it should be noted whether the white color is blueish or yellowish. Green phenomenon. The quality of white balance is mainly determined by the display's control system, and the die also influences the reducibility of color.
The above 6 points are the basic acceptance points, and also the most direct and most comprehensive acceptance direction. Each appropriate led display must be designed, manufactured, and tested for aging before it can be used in the market.

High Qualtiy, High cutting Performance, High Precision CNC Wire Cutting EDM Machine. China leading manufacturers and suppliers of CNC Wire Cut EDM Machine, EDM Machine , and we are specialize in Wire Cutting EDM Machine, etc.

wire cutting edm machine

CNC Wire Cut EDM Machine

CNC Wire Cut EDM Machine,EDM Machine,Wire Cutting EDM Machine,CNC Wire Cut

Suzhou Simos CNC Technology Co., Ltd. , http://www.edm-machines.com