Tips For Extending The Service Life Of The Display; Backlight; How Can The Service Life Of Backlights Be Extended; Image Persistence - B&R Panel PC 2100 User Manual

Servicing and maintenance

7.2 Tips for extending the service life of the display

7.2.1 Backlight

The service life of the backlight is specified by its "half-brightness time". An operating time of 50,000 would mean
that the display would still retain 50% of its brightness after this time.

7.2.1.1 How can the service life of backlights be extended?

• Setting the display brightness to the lowest value that is still comfortable for the eyes
• Using dark images
• Reducing the brightness by 50% can increase the half-brightness time by approximately 50%.

7.2.2 Image persistence

Image persistence refers to the "burning in" of a static image on a display after being displayed for a prolonged
period of time. This not only occurs with static images, however. Image persistence is also referred to in the
technical literature as burn-in effect, image retention, memory effect, memory sticking or ghost image.
There are basically 2 types:
• Area type: This type is characterized by a dark gray image. The effect disappears if the display is switched
off for a long period of time.
• Line type: Can result in permanent damage.

7.2.2.1 What causes image persistence?

• Static images
• No screensaver
• Sharp transitions in contrast (e.g. black/white)
• High ambient temperatures
• Operation outside of specifications

7.2.2.2 How can image persistence be reduced?

• Constantly switching between static and dynamic images
• Avoiding excessive brightness differences between foreground and background elements
• Using colors with similar brightness
• Using complementary colors in consecutive images
• Using screensavers

7.3 Pixel errors

Information:
Displays may contain defective pixels (pixel errors) that result from the manufacturing process. They
are not grounds for initiating a complaint or warranty claim.
326 Panel PC 2100 user's manual V1.17