How to detect a LCD screen

Install Windows Optimizer Master, there is no requirement for selecting a standard or Professional edition. Run the program, switch to the "system detection → video System Information" column, the right pane will display including video card, display, supported display mode, video drive performance and other items, we need to pay attention to the contents of the "monitor".

View basic information for the LCD screen

Here you can see the LCD screen manufacturers, the largest visual area, manufacturing date, contrast coefficient, current settings and so on, if the "manufacturing date" and the purchase date is much different, and there is no special reason, then need to negotiate with the seller. If the current test is not a notebook screen but a normal flat panel monitor, then there will be more content, for example, you can accurately view the display model, line frequency, field frequency, "line frequency" indicates the number of times per second in the screen horizontal direction of the scan, "field frequency" indicates the number of scans per second in the vertical direction, The value is of course the higher the better.

Detect the bad point switch to "system detection → system performance test", in the right pane, you can test the CPU, memory, video card, hard disk, LCD bad point, click the "Check Now" button after "LCD bad check", and then the screen will be full screen in turn to display black, red, green, blue, white and other solid colors, Click the left mouse button to switch to the next color, in each color under careful observation of the screen, check whether there is inconsistent with the color points, should be able to easily find bright spots (All Black), dark Point (when Kangbai), interested friends may wish to try.