Samsung Display Co., Ltd.

Kang Bin Jo

Go Eun Cha

Jong Hyun Lee

Il Nam Kim

Hyun Dae Lee

Kyung Tea Park

Dong Wook Yang

Hee Chul Hwang

Seung Hyun Moon

Jung Park

Hyoung Wook Jang

Hyang A Park

Chul Min Kim

Dae Young Lee

Byung Han Yoo

Sang Hwan Cho

Sung-Chan Jo

A display device comprises a display panel comprising an image display area and a non-display area, display pixels comprising light-emitting elements in the image display area and pixel driving units connected to the light-emitting elements, light-sensing pixels comprising photo-detecting units in a fingerprint sensing area in the image display area, and sense driving units connected to the photo-detecting units, a light-sensing reset driver configured to supply reset signals to the sense driving units of the light-sensing pixels for at least each horizontal line among the light-sensing pixels in response to a line select signal from a display driving circuit; and a fingerprint scan driver configured to sequentially supply a fingerprint scan signal to the sense driving units of the light-sensing pixels in response to a fingerprint scan control signal from the display driving circuit.

Display device

A display device includes: an emission line; a pixel configured to emit light in response to an emission signal received from the emission line; a reset line; and a light sensor configured to reset a voltage of a sensing node in response to a reset signal received from the reset line, wherein at least a portion of the reset line overlaps at least a portion of the emission line in a plan view.

Display device and electronic device including the same

A display device includes light emitting and receiving pixels, a reset line, a fingerprint scan line, a fingerprint sensing line, and first and second voltage lines in a display region. Each light receiving pixel includes a light receiving element including a first electrode and a second electrode connected to the second voltage line, a sensing transistor connecting the first electrode to the fingerprint sensing line according to a fingerprint scan signal applied to the fingerprint scan line and a reset transistor to connect the first voltage line to the first electrode according to a reset signal applied to the reset line. A first voltage applied to the first voltage line is greater than a second voltage applied to the second voltage line, and a third voltage applied to the fingerprint sensing line is greater than the second voltage and smaller than the first voltage.

A display device includes a display panel having a plurality of pixels connected to gate lines and data lines, and a plurality of fingerprint sensors connected to sensing lines and read-out lines. A gate driver provides gate signals to the gate lines and provides sensing signals to the sensing lines. The gate driver includes a first gate signal supply module providing a first gate signal to a first gate line among the gate lines. A first switching element is turned on by a reset enable signal to connect the first gate line and a first sensing line among the sensing lines.

A display device includes: a display panel; an emission driver; a scan driver; and a timing controller. The display panel includes light emitting pixels and photosensitive pixels, where the photosensitive pixels are operated in an initialization period, a light exposure period and a sensing period. The emission driver supplies emission control signals to emission control lines connected to the light emitting pixels, based on an emission start signal. The scan driver supplies scan signals to scan lines connected to the light emitting pixels and the photosensitive pixels, based on a scan start signal. The timing controller generates the emission start signal having a single pulse of a gate-off level and the scan start signal having a single pulse of a gate-on level in a last frame period among frame periods corresponding to the light exposure period and in each of frame periods corresponding to the sensing period.

Display device and driving method thereof

A method of driving an electronic device includes displaying a plurality of fingerprint recognition icons on a display device configured to perform fingerprint recognition, and releasing a lock state of the display device through a fingerprint authentication process upon determining at least one first fingerprint recognition icon among the plurality of fingerprint recognition icons is touched. The plurality of fingerprint recognition icons include at least one first fingerprint recognition icon configured to support the fingerprint recognition and at least one second fingerprint recognition icon configured to not support the fingerprint recognition.

Electronic device and method of driving the same

A display device including: scan lines including first and second scan lines; pixels connected to the scan lines; photo sensors connected to some of the scan lines, the photo sensors including a first photo sensor connected to the first scan line and a readout line, and a second photo sensor connected to the second scan line and the readout line; a scan driver to provide scan signals to the scan lines; and a readout circuit to receive, through the readout line, detection signals which are outputted from the photo sensors in response to the scan signals, wherein, while the scan signals are provided to the first and second scan lines, the readout circuit samples a detection signal of one of the first photo sensor and the second photo sensor without sampling a detection signal of the other one of the first photo sensor and the second photo sensor.

A display device includes: a display panel; a scan driver to provide scan signals to scan lines; an emission driver to provide emission control signals to emission control lines; and a readout circuit to receive a sensing signal from a readout line. The display panel includes: a first pixel in a first row, and connected to a first sub-scan line from among the scan lines, and a first emission control line; a first photo sensor in the first row, and connected to the first sub-scan line, a reset control line, and the readout line; a second pixel in a second row, and connected to a second sub-scan line from among the scan lines, and a second emission control line; and a second photo sensor in the second row, and connected to the second sub-scan line, a third emission control line, and the readout line.

An input sensing device includes sensor pixels initialized in response to a reset signal provided through a reset line, and output a sensing signal to a read-out line in response to a scan signal provided through a scan line. A controller generates at least one start signal and clock signals. A selector selectively provides the at least one start signal and the clock signals to first control lines or second control lines. A reset driver connected to the first control lines, and supplying reset signals to at least some of the reset lines based on the at least one start signal and the clock signals provided through the first control lines. A scan driver is connected to the second control lines, and supplies scan signals to at least some of the scan lines based on the at least one start signal and the clock signals.

Input sensing device and display device including the same

A display device comprises a display panel which comprises scan lines, sensing lines, pixels electrically connected to each of the scan lines, and photo sensors electrically to each of the scan lines and the sensing lines, a scan driver which outputs scan signals to the scan lines according to a scan control signal, a timing controller which outputs the scan control signal to the scan driver, and a readout circuit which receives light sensing signals of the photo sensors from the sensing lines. The timing controller sets a frame frequency of the scan control signal to a first frame frequency in a first mode in which the display panel displays an image. The timing controller sets the frame frequency of the scan control signal to a second frame frequency in a second mode in which the photo sensors sense a fingerprint.

A display device includes display pixels arranged in a display area of a display panel, light-sensing pixels arranged alternately with the display pixels in the display area, light-sensing scan lines, each divided into at least two horizontal lines disposed adjacent to each other and connected to light-sensing pixels disposed proximate to the at least two horizontal lines, a display scan driver configured to sequentially supply display scan signals to display pixels connected to each horizontal line through display scan lines corresponding to each horizontal line, a blood-pressure detecting circuit configured to measure a user's blood pressure using light-sensing signals input through the light-sensing pixels, and a display driving circuit configured to control a timing at which the display scan signals are supplied to the display scan lines and a timing at which sensing scan signals are supplied to the light-sensing scan lines.

A display device includes a display panel including a pinhole optical system and an optical sensor overlapping the pinhole optical system. A fingerprint detection method which detects a user's fingerprint using the display device includes obtaining fingerprint sensing data by sensing a user's fingerprint using the display device, detecting misalignment information indicating a degree of misalignment between the pinhole optical system and the optical sensor, generating calibration data using at least one piece of reference data corresponding to at least one reference folding angle according to the detected misalignment information, generating fingerprint data by correcting the fingerprint sensing data using the calibration data, and detecting the user's fingerprint according to the fingerprint data.

Display device and fingerprint detection method using the same

An input sensing device includes: sensor pixels, a horizontal driver, a selection circuit, and a vertical driver. Each of the sensor pixels is connected to a plurality of driving lines and a one of a plurality of signal input lines. The horizontal driver sequentially applies a horizontal driving signal to the sensor pixels through the driving lines. The selection circuit is connected to n of the signal input lines (n is a natural number of 2 or more) and to one output line. The selection circuit sequentially outputs n sensing signals received through the n signal input lines to the one output line. The vertical driver receives the n sensing signals through the one output line. The horizontal driver applies the horizontal driving signal n times to a given one of the driving lines to correspond to the n sensing signals.

Input sensing method and input sensing device including the same

A display device includes a display panel including a plurality of touch electrodes, a touch driving circuit electrically connected to the plurality of touch electrodes, and a fingerprint sensor device disposed on one surface of the display panel and including a plurality of unit blocks. The fingerprint sensor device includes a plurality of fingerprint scan lines extending in a first direction, a plurality of fingerprint sensing lines extending in a second direction crossing the first direction, a plurality of sensor pixels respectively connected to the plurality of fingerprint scan lines and the plurality of fingerprint sensing lines, and a fingerprint scan driver having a plurality of stages for applying a fingerprint scan signal to each of the plurality of fingerprint scan lines. The touch driving circuit applies a start signal to the fingerprint scan driver.

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Yongin-si, South Korea

Kang Bin Jo