According to a list published by the United States Trademark and Patent Office (USPTO) today, Apple has obtained a technology patent involving foldable devices, outlining related systems and methods to control the upper and lower sides of the screen. Color and brightness compensation for each part.
Foldable displays, in the folded state, can utilize the upper half of the screen to display media content (e.g., mobile apps, videos, websites) and the lower half of the screen as input media (e.g., virtual keyboard or trackpad ), display LOGO, date and time information or other information.
If the upper and lower parts adopt a constant brightness, then different vertical luminous axes may appear in different areas, and the difference in brightness or color between the two folded areas (top and bottom) of the foldable display may produce image artifacts.
In some types of displays, the apparent brightness of the display will depend on the emission angle relative to the display normal direction (perpendicular to the display surface).
Apple has outlined a related system and method for controlling color and brightness compensation for the upper and lower parts.
For example, when the display is folded, the upper half of the display can display media content, while the lower half of the display can be used as a keyboard or other input media. In some cases, especially in low-light conditions, the screen viewing experience may be affected.
The screen can implement different special modes (for example, pre-adjusting or dynamically adjusting settings based on environmental conditions) for different folded areas of the display (for example, when the folded display is folded in half, each half of the folded display may have different settings) to help Simplify the viewing experience. Attached the patent sketch as follows:
For example, in low-light or nighttime scenes, the display may apply a color shift mode, which involves dimming the blue light in the upper half of the display.
The ability to track and/or determine eye position could enable foldable displays to dynamically adjust brightness and color output to provide users with an optimal viewing experience. In one example, the position of the eyes relative to the display may be determined by a camera, a proxy sensor, a facial recognition system (e.g., Apple Inc.’s Face ID®), the fold angle of the display, or any other eye tracking method.
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