Method for acquiring biometric information and electronic device supporting the same

A method of an electronic device having a display, comprising:

• displaying a user interface at a biometric sensing area in an application window of the display at a first brightness to guide a touch input from a user, the biometric sensing area corresponding to a biometric sensor configured to acquire biometric data through the biometric sensing area, and the user interface overlapped with the biometric sensor disposed in the application window;
• by using a plurality of pixels of the display outside the biometric sensing area, change a background color of the application window into a black state or a low gradation state when the user interface is displayed;
• when the touch input is detected on the display within the biometric sensing area, operating one or more pixels of the display inside the biometric sensing area at a second brightness higher than the first brightness;
• controlling the biometric sensor to acquire the biometric data through the display while the one or more pixels inside the biometric sensing area are at the second brightness;
• and
• while controlling the one or more pixels inside the biometric sensing area to operate at the second brightness, controlling the display to maintain turned-on state and the background color of the application window maintains the black state or the low gradation state.

An electronic device comprising:

• a display including a plurality of pixels;
• a biometric sensor corresponding a biometric sensing area of the display;
• and
• at least one processor coupled to the display and the biometric sensor,
• wherein the processor is configured to:
• by using a plurality of pixels outside the biometric sensing area, change a background color of an application window into a black state or a low gradation state when a user interface in the application window at a first brightness is displayed in the biometric sensing area, the user interface overlapped with the biometric sensor disposed in the application window, and
• control the biometric sensor to acquire biometric data when the user interface is displayed at a second brightness higher than the first brightness, and
• while controlling the one or more pixels inside the biometric sensing area to operate at the second brightness, control the display to maintain turned-on state and the background color of the application window maintains the black state or the low gradation state.