Lg Display Co., Ltd.

Jiho Cho

Manhyeop Han

Kyoseop Choo

Junghoon Lee

Moonbong Song

ManHyeop Han

Dongjo Park

A fingerprint recognition system may comprise: a display panel configured to display an image on a screen; a light source device configured to irradiate light onto a transparent substrate disposed on the screen of the display panel; an image sensor configured to obtain a fingerprint image with light reflected from a fingerprint contacting the transparent substrate on the screen; and an image sensor controller configured to control an exposure time of the image sensor to obtain the fingerprint image based on a contrast ratio of the fingerprint image.

Fingerprint recognition device and display device and mobile terminal using fingerprint recognition device

A touch screen device with an integrated fingerprint sensor comprises: a touch screen having a fingerprint recognition area with fingerprint sensors and a touch recognition area with touch sensors physically separated from the fingerprint sensors; and a touch IC that drives the touch sensors and the fingerprint sensors in fingerprint sensing mode to sense fingerprint recognition information from the fingerprint sensors and touch recognition information from the touch sensors.

Touch screen device with integrated fingerprint sensor and method of driving of the same

The present disclosure provides a touchscreen device with an integrated fingerprint sensor. The touchscreen device including a touchscreen having a touch area for touch sensing and a fingerprint and touch area for touch sensing and fingerprint sensing, the touch area having Tx electrodes arranged in a first direction and Rx electrodes arranged in a second direction, and the fingerprint and touch area having FTx electrodes arranged in the first direction and FRx electrodes arranged in the second direction, and a touch IC that performs touch sensing through the touch area and the fingerprint and touch area and performs fingerprint sensing through the fingerprint and touch area, wherein the Rx electrodes form a plurality of groups, and the groups are individually and separately connected to Rx lines in the boundary region between the touch area and the fingerprint and touch area.

Touchscreen device with integrated fingerprint sensor

A touch sensing system and a method of reducing latency thereof are disclosed. The touch sensing system includes a touch sensing circuit configured to apply a driving signal to touch sensors, sense voltages of the touch sensors, and output a digital touch raw data; a coordinate calculator configured to analyze the digital touch raw data, and calculate a coordinate information about each of positions of a touch input; and an idle mode controller configured to compare an analog signal received from the touch sensors with a predetermined threshold value, decide whether or not the touch input is generated based on the analog signal, and generate an interrupt signal when the touch input is sensed.

Touch sensing system and method of reducing latency thereof

The present disclosure relates to a sensor screen capable of recognizing a touch and a fingerprint. A touch screen includes an active area having a minor axis and a major axis intersecting each other, and a bezel area outside the active area. The touch screen includes a plurality of touch sensing electrode groups arranged in the minor axis direction, a plurality of touch driving electrode groups arranged in the major axis direction, a plurality of fingerprint and touch driving electrodes arranged in the major axis direction between the touch driving electrode groups, a plurality of fingerprint and touch sensing electrodes arranged adjacent to the outermost touch sensing electrode group from among the plurality of touch sensing electrode groups and a read-out IC arranged adjacent to the plurality of fingerprint and touch sensing electrodes.

Sensor screen perceiving touch and fingerprint

A touch sensing device comprises a plurality of first touch electrodes and a plurality of second touch electrodes located in an active area of the touch sensing device, the plurality of first touch electrodes and the plurality of second touch electrodes arranged in a first direction. The touch sensing device also includes a plurality of third touch electrodes located in the active area and arranged in a second direction that crosses the first direction. The first touch electrodes, second touch electrodes, and third touch electrodes have a first resolution for sensing touch in the active area. The touch sensing device also includes a plurality of combination touch and fingerprint electrodes located in the active area, the plurality of combination touch and fingerprint electrodes having a second resolution for sensing both touch and a fingerprint in the active area and the second resolution being higher than the first resolution.

Fingerprint sensor integrated type touch screen panel

Disclosed is a fingerprint sensor integrated type touch screen device that includes a touch screen having at least one fingerprint & touch area and a plurality of touch areas, each touch area including Tx electrode lines of a first group crossing Rx electrode lines of the first group, and touch sensors at crossings of the Tx electrode lines of the first group and the Rx electrode lines of the first group; and a touch integrated circuit (IC) that supplies a sensor driving signal of a same phase to the Tx electrode lines of the first group, groups first effective Rx channels of the Rx electrode lines of the first group as a bundle, and simultaneously senses the first effective Rx channels through a first touch sensing part, wherein first ineffective Rx channels of the Rx electrode lines of the first group are electrically disconnected from the first touch sensing part.

Fingerprint sensor integrated type touch screen device

A display device having touch sensors includes a display panel having a touch screen, a Tx driving circuit supplying a touch driving pulse to Tx electrode lines of the touch screen, an Rx driving circuit which samples voltages of the touch sensors received through Rx electrode lines of the touch screen due to the supply of the touch driving pulse and outputs touch raw data from the voltages of the touch sensors, and a touch controller which obtains a plurality of touch groups based on the touch raw data, sets a transmission format of an effective touch group, on which a touch operation is performed, among the plurality of touch groups to a variable touch coordinate packet, and transmits the variable touch coordinate packet to an external host system.

Growing community of inventors

Gimpo-si, South Korea

Jiho Cho