Samsung Display Co., Ltd.

Byeong Kyu Jeon

Jeong Heon Lee

Hee Woong Park

Sung Ku Kang

Jung Mok Park

Jin Woo Kim

Young Sik Kim

Mi Young Kim

Kyoung Hun Been

Jin Hwan Kim

Choon Hyop Lee

Joo-Han Bae

Kang Won Lee

Hyung Chul Kim

Chang Bum Kim

Soon Gyu Lee

Sang Wook Yoo

Young Seok Yoo

Keum Dong Jung

Jung Hak Kim

Sang Hun Park

Sun-Haeng Cho

Yong Sub So

Jin A Kang

Ga Yeon Yun

Kyo Won Ku

Hee Yeon Choi

Dong Chun Lee

Da Eun Yi

Ji Yeon Baek

Bo Hwan Lee

A display device includes: a touch sensing unit on a front surface of an image display area and configured to sense a location of a touch; a display driver circuit configured to select one of first to third temperature sensing modes during a predetermined temperature sensing period and to generate at least one of first to third mode sensing control signals according to the selected temperature sensing mode; and a touch driver circuit configured to generate at least one of first to third temperature sensing map data in response to at least one of the first to third mode sensing control signals, wherein the display driver circuit is configured to compensate for image data based on at least one of the first to third temperature sensing map data and to display an image according to the compensated image data in the display area.

Display device

A method for restoring an image of a fingerprint sensor is described. The method includes capturing, by the fingerprint sensor, a fake fingerprint image from a fake fingerprint; calculating a phase of the fake fingerprint from the fake fingerprint image; capturing a plurality of target fingerprint images at measurement times by a fingerprint sensor disposed on a rear side of a display panel; applying the calculated phase to each of the acquired target fingerprint images; and combining information from each of the plurality of target fingerprint images to generate a final fingerprint image.

Method and apparatus for restoring image of fingerprint sensor

A touch sensing device includes a base layer, a touch electrode layer, a first reinforcing member, and a touch circuit board. The base layer includes a main area and a protruding area protruding from the main area in a first direction. The touch electrode layer is disposed on a surface of the base layer. The first reinforcing member is disposed on a surface of the protruding area. The touch circuit board is electrically connected to the touch electrode layer. The protruding area includes a bending area and a pad area. The bending area is bent downward. The pad area extends from the bending area in the first direction and overlaps the base layer in a second direction intersecting the first direction in a bent state of the bending area. The touch circuit board is attached to the pad area.

Touch sensing device and display device including the same

A display device includes: a display unit; and a sensor unit overlapping with the display unit, and including first sensors, and second sensors crossing the first sensors. During a first frame period, the first sensors are to transmit an uplink signal, and the second sensors are to not transmit the uplink signal, and during a second frame period after the first frame period, the second sensors are to transmit the uplink signal, and the first sensors are to not transmit the uplink signal.

Display device and driving method thereof

A method for calculating a reference value of an ultrasonic sensor includes: transmitting a first ultrasonic signal from the ultrasonic sensor toward a first surface of a contact device while an object is positioned on the first surface; generating a plurality of ultrasonic images based on a first ultrasonic echo signal; selecting an ultrasonic image having a highest similarity to a reference image from among the ultrasonic images; storing a first parameter and a second parameter corresponding to a selected ultrasonic image; while the object is not positioned on the first surface, transmitting a second ultrasonic signal based on the first parameter from the ultrasonic sensor toward the first surface; and calculating the reference value of the ultrasonic sensor using the second parameter and a second ultrasonic echo signal.

Method and system for calculating reference value of ultrasonic sensor

A fingerprint authentication device includes: a sensor unit configured to output a sensing signal by sensing a fingerprint; an image processing unit configured to generate a fingerprint image based on the sensing signal; a storage unit configured to store a template including an enrolled image; and a learning unit configured to generate a first pseudo image and add the first pseudo image to the template.

Fingerprint authentication device, display device including the same, and method of authenticating fingerprint

A touch sensing device and a display device for improving hovering performance including: a touch sensing display panel including sense electrodes arranged in a matrix; and a sensing signal controller connected to the touch sensing display panel. The sense electrode includes a metal mesh electrode and a conductive layer contacting the metal mesh electrode.

An ultrasonic fingerprint sensing method includes: generating a first ultrasonic wave using a first frequency; receiving a first signal generated by reflection of the first ultrasonic wave from each of a ridge and a valley of a fingerprint; generating a first image based on the first signal; comparing the first image with a registered reference image to generate a matching score; and in response to the matching score being less than a threshold value, generating a second image using a second frequency.

Ultrasonic fingerprint sensor and ultrasonic fingerprint sensing method using the same

A display device including a display panel having a display area and a non-display area disposed around the display area; a touch sensor disposed on the display panel, the touch sensor comprising a sensing area corresponding to the display area, a peripheral area corresponding to the non-display area, and a pad unit disposed on a part of the peripheral area; a flexible printed circuit board disposed on the touch sensor in the peripheral area and connected to the pad unit; a polarization layer disposed on the touch sensor and a part of the flexible printed circuit board; and a printed layer disposed on at least an area between the flexible printed circuit board and the sensing area.

A touch sensor includes a substrate, a touch input unit, a plurality of wires, and a pad unit. The touch input unit is disposed on the substrate and includes a plurality of sensing electrodes for sensing user touch. The pad unit includes a plurality of pads electrically connected to the sensing electrodes through the wires. The pads include a first pad. The first pad includes a first conductive film disposed on the substrate, an insulating film disposed on the first conductive film, and a second conductive film disposed on the insulating film. The insulating film includes a plurality of first-type holes and a plurality of second-type holes. Each first-type hole of the first-type holes is smaller than each second-type hole of the second-type holes.

Touch sensor

A touch screen and a display device having the same are disclosed. The touch screen includes an insulating substrate including a sensing region and a peripheral region, a plurality of sensing electrodes disposed in the sensing region, a plurality of wirings disposed in the peripheral region and electrically connected to the plurality of sensing electrodes, a plurality of pads disposed in the peripheral region and electrically connected to the plurality of wirings, an optical film disposed on an upper portion of the plurality of sensing electrodes, a flexible circuit board electrically connected to the plurality of pads, and a reinforcing member disposed on the flexible circuit board corresponding to the plurality of pads, wherein a first height measured from the insulating substrate to an upper surface of the reinforcing member is equal to a second height measured from the insulating substrate to an upper surface of the optical film.

Touch screen and display device having the same

A display device includes a display panel including a plurality of pixels, a touch sensor unit provided on the display panel, and including a touch sensing area in which a touch sensor is provided and a non-sensing area around the touch sensing area, and a polarizer provided on the touch sensor unit and bonded to the touch sensor unit, an edge side of the polarizer and an edge side of the touch sensor unit being aligned.

Display device including touch sensor and manufacturing method thereof

A touch sensor device includes a first touch sensing region and a second touch sensing region, wherein each of the first touch sensing region and the second touch sensing region includes a plurality of first touch electrodes and a plurality of second touch electrodes, first connection portions each connecting two adjacent first touch electrodes among the plurality of first touch electrodes, and second connection portions each connecting two adjacent second touch electrodes among the plurality of second touch electrodes, wherein the second touch sensing region includes a plurality of third touch electrodes; and a plurality of touch wires respectively connected to the plurality of third touch electrodes, the plurality of third touch electrodes are separated from each other, and the third touch electrode forms a self-capacitive type sensor, the plurality of third touch electrodes border an outside edge of where the plurality of first and second touch electrodes are disposed.

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Busan, South Korea

Byeong Kyu Jeon