User's Manual


How to Setup PerfectScreen


Select your monitor from the database:

  1. Click «Settings» icon on the Main Window:
  2. Select «PC Monitor» as your display device:
  3. Choose the monitor from the list.
  4. Click «Apply» button.
  5. When the monitor is selected, the Apply button becomes inactive:
  6. Click «Save» button to save changes.
  7. Click «Start» icon on the Main Window to Start Protection.

If your monitor is not in the database:

  1. Click «Settings» icon on the Main Window:
  2. Select «Unknown device» as your display device:
  3. Choose the LCD panel type of your monitor from the list.
  4. Click «Apply» button.
  5. When the panel type is selected, the Apply button becomes inactive:
  6. Click «Save» button to save changes.
  7. Click «Start» icon on the Main Window to Start Protection.

How to Use PerfectScreen


The program is very easy to use. The quantity of the accumulated image persistence (in minutes) is displayed on the icon of the program in system tray:

If it is in the green zone, you can switch off the computer without danger of damaging the monitor. Alternatively, you can use the Automatic Shutdown Mode when the program has completely removed image persistence and turns off the computer by itself.

Main Window


What you can do with the help of PerfectScreen:

  • Check if you already have image persistence
  • Explore the Screen

    Look at the gray background to estimate the image persistence.

    Explore with Motion

    Watch for horizontal moving of the vertical line to estimate the nonuniformity of the screen.

    Take a Picture

    Take a picture of the monitor screen using a phone or a digital camera in a dark room.
    By using the focus targets on the screen, you can properly set focus of your camera.
    In most cases, you will probably be using shutter speeds of a second or slower.
    At slower shutter speeds, you certainly need a tripod or image stabilization to produce sharp images.

    Analyze the Picture

    After the picture was taken, you should analyze it.
    Use the Contrast level slider to adjust visibility of details.

    As an example, try to analyze this picture (ISO 100, f/4.0, 5s).

  • Test if you will have image persistence
  • The values of 20, 40 and 60 are duration of the test in minutes.
    You will see the test grid, which will be dynamically switching.
    The first column will be always static.
    Look away during the test so that your eyes were not tired at the end.
    After the test, screens with image persistence will show a faint impression of the grid on the gray background.

    Note: Image Persistence Detector will not work during the test.

  • Test the removal methods of image persistence
  • Overvoltage Relaxation

    Matrix Normalization

    Boundary Normalization

    When you hide the controls, the program will count the spent time as a successfully used for selected removal method.

  • Protection of the screen
  • Start the screen protection.

    Stop the screen protection.

  • Program settings
  • Changing the program settings.
    Note: If you are experiencing high CPU usage, you should select a lower performance mode.
    E.g., if you are using 4k monitor, you may select the normal performance mode to avoid more CPU usage.

  • Additional help
  • Online help: this manual.
    Support request: sending requests to Technical Support.
    Submit a bug: sending bug reports to Technical Support.
    Check updates: checking if a newer version of the program is available on our website.
    Purchase/Activate: purchasing and activating your license.
    About: showing window about PerfectScreen.

  • Exit from PerfectScreen
  • Stops the screen protection and the program running.

When the screen protection is active, you can click the next items:

  • Monitor's Screen
  • Shows the map of Image Persistence of the screen.

  • Screen Usage Chart
  • Shows the map of Usage Statistics of the screen pixels.

Popup-Menu in System Tray


Right-clicking the PerfectScreen icon in the system tray shows the popup menu:

The menu contains the following items:

  • Open
  • Opens the program's main window.

  • Show Screen
  • Same as «Explore the Screen» command from the main window.

  • Show Motion
  • Same as «Explore with Motion» command from the main window.

  • Image Persistence
  • Shows the map of Image Persistence of the screen.

  • Pixels Statistics
  • Shows the map of Usage Statistics of the screen pixels.

  • Shut down the Computer (*)
  • Automatic shutdown of the computer when the image persistence level equals to zero.
    Click on this item next time you need to stop the shutdown mode.

    Note: This mode is used only for prevention of appearance of image persistence. For correction of image persistence, please see the text in «Fixing Severe Image Persistence».

    (*) Only for activated license.
  • Exit
  • Stops the screen protection and the program running.