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US 11,815,754 B2Granted
Display device and method of driving the same
AssigneeSamsung Display Co., Ltd.
InventorsKyo Won Ku, Jung Hak Kim, Young Sik Kim, Jin Woo Kim, Jeong Heon Lee, Hee Yeon Choi
Life of this patent
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Abstract
A display device includes a first display panel for displaying a first image, a fingerprint sensor disposed on one surface of the first display panel and detecting light passing through the first display panel, and a first light transmission control unit disposed between the first display panel and the fingerprint sensor for controlling transmission of light.
Claims16
A display device, comprising:
- a first display panel for displaying a first image;
- a fingerprint sensor disposed on one surface of the first display panel and detecting light passing through the first display panel;
- and
- a first light transmission control unit disposed between the first display panel and the fingerprint sensor for controlling transmission of light,
- wherein the first light transmission control unit includes:
- a first base substrate and a second base substrate facing each other;
- a first electrode disposed on one surface of the first base substrate;
- a second electrode disposed on one surface of the second base substrate facing the first base substrate;
- and
- a light transmission control layer disposed between the first electrode and the second electrode, and
- the light transmission control layer includes:
- an electrochromic layer disposed on one surface of the second electrode facing the first electrode and configured to change a color according to an oxidation-reduction reaction by a first driving voltage applied to the first electrode and a second driving voltage applied to the second electrode;
- a counter layer disposed on one surface of the first electrode facing the second electrode and located between the first electrode and the electrochromic layer for assisting the oxidation-reduction reaction of the electrochromic layer;
- and
- an electrolyte layer disposed between the electrochromic layer and the counter layer for providing cations and anions to cause the oxidation-reduction reaction in the electrochromic layer and the counter layer.
12 more elements
A display device, comprising:
- a first display panel;
- a second display panel disposed on one surface of the first display panel;
- a fingerprint sensor disposed between the first display panel and the second display panel;
- a first light guide unit disposed between the first display panel and the fingerprint sensor and providing light passing through the first display panel to a light sensing element of the fingerprint sensor;
- a second light guide unit disposed between the second display panel and the fingerprint sensor and providing light passing through the second display panel to the light sensing element of the fingerprint sensor;
- a first light transmission control unit disposed between the first display panel and the fingerprint sensor;
- and
- a second light transmission control unit disposed between the second display panel and the fingerprint sensor,
- wherein, when a touch event occurs in the first display panel, the first light transmission control unit is in a light transmission mode for transmitting light such that light passing through the first display panel is incident on the fingerprint sensor, and the second light transmission control unit is in a light blocking mode for blocking light, and
- when a touch event occurs in the second display panel, the second light transmission control unit is in a light transmission mode for transmitting light such that light passing through the second display panel is incident on the fingerprint sensor, and the first light transmission control unit is in a light blocking mode for blocking light.
7 more elements
A method of driving a display device, comprising:
- determining whether a touch event occurs in a first display panel and a second display panel disposed on one surface of the first display panel;
- implementing a first light transmission control unit disposed between the first display panel and a fingerprint sensor in a light transmission mode for transmitting light such that light passing through the first display panel is incident on the fingerprint sensor, when the touch event occurs in the first display panel;
- implementing a second light transmission control unit disposed between the second display panel and the fingerprint sensor in a light blocking mode for blocking light, when the touch event occurs in the first display panel;
- implementing the second light transmission control unit in a light transmission mode for transmitting light such that light passing through the second display panel is incident on the fingerprint sensor, when the touch event occurs in the second display panel;
- and
- implementing the first light transmission control unit in a light blocking mode for blocking light, when the touch event occurs in the second display panel.
3 more elements
A display device, comprising:
- a first display panel that is not bent or folded for displaying a first image in a front direction of the display device;
- a second display panel that is capable of being bent or folded attached through an adhesion member to the first display panel and displaying a second image in a rear direction of the display device;
- and
- a fingerprint sensor disposed between the first display panel and the second display panel and detecting light passing through the first display panel or light passing through the second display panel,
- wherein the adhesion member is directly interposed and sandwiched between the first display panel and the second display panel without other components interposed therebetween, and includes a front surface directly attached to the first display panel, and a rear surface facing the front surface and directly attached to the second display panel, and
- the fingerprint sensor is interposed and sandwiched between the first display panel and the second display panel, disposed within a same layer of the adhesion member, and surrounded by the adhesion member.
3 more elements
Dependencies are inferred from the claim text.