Display device and driving method thereof
AssigneeSamsung Display Co., Ltd.
InventorKwang Suk Shin
Life of this patent
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Abstract
A display device includes: a display panel which displays an image corresponding to an input image data in a display area; and a fingerprint sensor which senses a fingerprint of a finger using light reflected by the finger positioned on the display area among light emitted from the display panel. When a fingerprint sensing mode is changed to an activated state from an inactivated state, a luminance of an image displayed in a first display area corresponding to a position of the finger in the display area is increased.
Claims12
A display device, comprising:
- a display panel which displays an image corresponding to input image data in a display area thereof;
- a fingerprint sensor which senses a fingerprint of a finger using light reflected by the finger positioned on the display area among light emitted from the display panel that displays the image;
- and
- a data converter which generates scaled-down input image data by applying a predetermined correction coefficient to the input image data when a fingerprint sensing mode is in the activated state,
- wherein, when the fingerprint sensing mode is changed to an activated state from an inactivated state, a luminance of a portion of the image displayed in a first display area corresponding to a position of the finger in the display area is increased relative to a luminance of a remaining portion of the image displayed in a second display area corresponding to a remaining portion of the display area other than the first display area,
- wherein the display panel comprises a luminance controller which sets a target luminance of the image to a first luminance when the fingerprint sensing mode is in the inactivated state and sets the target luminance of the image to a second luminance, which is higher than the first luminance, when the fingerprint sensing mode is in the activated state.
A display device, comprising:
- a display panel which displays an image corresponding to input image data in a display area thereof;
- and
- a fingerprint sensor which senses a fingerprint of a finger using light reflected by the finger positioned on the display area among light emitted form the display panel that displays the image,
- wherein, when a fingerprint sensing mode is changed to an activated state from an inactivated state, a luminance of a portion of the image displayed in a first display area corresponding to a position of the finger in the display area is increased relative to a luminance of a remaining portion of the image displayed in a second display area corresponding to a remaining portion of the display area other than the first display area,
- wherein the display panel comprise a luminance controller which sets a target luminance of the image to a first luminance when the fingerprint sensing mode is in the inactivated state and sets the target luminance of the image to a second luminance, which is higher than the first luminance, when the fingerprint sensing mode is in the activated state, and
- wherein
- when the fingerprint sensing mode is in the inactivated state, the luminance controller selects a first gamma driving voltage, and
- when the fingerprint sensing mode is in the activated state, the luminance controller:
- selects a second gamma driving voltage different from the first gamma driving voltage.
A method for driving a display device including a display panel for displaying an image corresponding to input image data in a display area and a fingerprint sensor for sensing a fingerprint of a finger using light reflected by the finger positioned on the display area among light emitted from the display panel to display the image in the display area, the method comprising:
- activating a fingerprint sensing mode while displaying the image;
- and
- increasing a luminance of an image displayed in a first display area corresponding to a position of the finger in the display area relative to a luminance of a remaining portion of the image displayed in a second display area corresponding to a remaining portion of the display area other than the first display area,
- wherein the increasing the luminance of the image displayed in the first display area comprises:
- increasing a target luminance of the image;
- and
- generating scaled-down input image data by applying a predetermined correction coefficient to the input image data, and
- wherein the increasing the target luminance of the image comprises changing a gamma driving voltage.
Dependencies are inferred from the claim text.