Why is my full-array local dimming display experiencing blooming?
With HDR enabled, full-array local dimming display may experience a blooming or haloing effect due to brighter zones affecting images of adjacent dark zones.
What is the blooming/halo effect?
The blooming or halo effect occurs when areas of light appear on parts of the display, particularly on a dark screen. This is not exclusive to Acer products and does not indicate a defect or quality issue with your display. All full-array local dimming displays are subject to this effect when HDR is enabled.
What causes the blooming/halo effect?
Local dimming panels are divided into different sections for the purpose of adjusting local backlight. When the screen is fully black (0, 0, 0), and only the mouse curser is lit, local dimming will only light up the white area on the screen (ex. mouse curser). However, since local dimming panels are divided into sections, the backlight will light up the LED in the entire section where the mouse curser is positioned, creating a halo effect.
How can I troubleshoot the blooming/halo effect?
The blooming/halo effect cannot be completely eliminated while HDR is enabled. You can use the suggestions below to help reduce the noticeability of the light leakage.
- Adjust the brightness of your display.
- Increase the light level in the room you are using the display in.
- Use light colored backgrounds and application themes.
If you have tried the steps above and feel like there is a hardware issue with your product, please contact Acer support