Samsung Display Co., Ltd.

Byeongkyu Jeon

Jinwoo Kim

Jungmok Park

Jina Kang

Heewoong Park

Miyoung Kim

ChangBum Kim

Janghui Kim

Soongyu Lee

Sanghun Park

Jeongheon Lee

Hyungchul Kim

Dongchun Lee

Changbum Kim

Bo-hwan Lee

Kangwon Lee

Keumdong Jung

Kyowon Ku

Yongsub So

Da Eun Yi

Byeong-Jin Lee

Joo-Han Bae

Jinhwan Kim

Youngmin Park

Jee-Hun Lim

Sungku Kang

Heeyeon Choi

Jlna Kang

Chung-Won Choi

Hoeung Lee

An input sensing device includes a sensor that includes a plurality of first electrodes and a plurality of second electrodes, and a sensor driver that operates in a first sensing mode and a second sensing mode. During the first sensing mode, the sensor driver generates a first sensing signal by transmitting transmission signals to the sensor and receiving reception signals from the sensor. During the second sensing mode, the sensor driver generates a second sensing signal by transmitting the transmission signals to the sensor and receiving the reception signals from the sensor. The sensor driver selects one of a plurality of compensation maps based on the first sensing signal, compensates for the second sensing signal based on the selected compensation map, and outputs the compensated sensing signal.

Input sensing device including sensor driver using compensation maps, display device having the same and input sensing method

A touch sensor apparatus may include a multiplexer including a first transistor connected to a first touch sensor and a second transistor connected to a second touch sensor, a touch driver connected to the first touch sensor through the first transistor and connected to the second touch sensor through the second transistor, the first touch sensor disposed at a first distance from the touch driver and the second touch sensor disposed at a second distance shorter than the first distance from the touch driver. A first on-resistance of the first transistor may be smaller than a second on-resistance of the second transistor.

Touch sensor apparatus and display apparatus including the same

An electronic device includes a display panel, an input sensor disposed on the display panel and including first sensing electrodes extending in a first direction and second sensing electrodes extending in a second direction crossing the first direction, and a sensor controller connected to the input sensor. First and second areas are defined in the input sensor based on an input position to which an input by an input device is applied. The input position is located in the first area and not in the second area. The sensor controller applies a first signal to at least one first sensing electrode disposed in the first area and at least one second sensing electrode disposed in the first area and applies a second signal having an opposite phase to a phase of the first signal to the other first and second sensing electrodes disposed in the second area.

Electronic device having increased input sensing sensitivity

A display device includes a display panel, an input sensor disposed on the display panel and sensing an input during a sensing frame period, a display controller receiving a vertical synchronization signal and a horizontal synchronization signal and controlling driving of the display panel in response to the vertical synchronization signal and the horizontal synchronization signal, and a sensor controller providing a transmission signal including a plurality of sampling periods to the input sensor. The display controller provides frequency information of a display frame period to the sensor controller using at least one of the vertical synchronization signal and the horizontal synchronization signal, and the sensor controller controls the number of the sampling periods of the sensing frame period based on the frequency information.

Display device

An electronic device includes: a display layer; a sensor layer to operate in a first mode for detecting a first input by a touch, and a second mode different from the first mode and including a plurality of frames; and a sensor controller to control the sensor layer. Each of the plurality of frames includes a downlink signal including information used to detect a second input by an input device, and a sensing signal including information used to detect the first input. When the first input is detected in the second mode, the sensor controller is to: output first coordinates of the first input based on the sensing signal of at least one frame in which the first input is detected; and correct second coordinates of the second input based on the first coordinates during a period of at least two frames including the at least one frame.

Electronic device and interface device including the same

An electronic device includes a display panel, an input sensor, a panel driver, and a sensor controller. The panel driver drives the display panel at a first operating frequency in a first driving mode and drives the display panel at a second operating frequency lower than the first operating frequency in a second driving. The display panel displays the image in units of first driving frames in the first driving mode and displays the image in units of second driving frames in the second driving mode. The sensor controller transmits a first mode uplink signal to the input sensor in a first scheme in the first driving mode and transmits a second mode uplink signal to the input sensor in a second scheme different from the first scheme in the second driving mode.

Electronic device

An electronic device includes: a display layer; a sensor layer on the display layer and having an active area and a peripheral area adjacent to the active area, wherein the sensor layer is configured to operate in a first mode, in which a first input by an input device is sensed, and a second mode, in which a second input by touch is sensed; and a controller configured to control the sensor layer, wherein, in the first mode, the controller is configured to define the active area into a first area and a second area different from the first area, which are defined based on a coordinate at which the first input is sensed, and in the first mode, the controller is configured to provide an uplink signal to the first area and provide a reverse-phase signal having a reverse phase of the uplink signal to the second area.

Electronic device with uplink signal to first area in a first mode

An interface device includes an electronic device and an input device for communicating with the electronic device. The electronic device includes a display layer, a sensor layer, and a controller for outputting a first uplink signal and a second uplink signal to the sensor layer. The input device includes a communication unit for receiving an uplink signal from the sensor layer, a memory for storing first information and second information, a signal determination unit for determining whether the uplink signal is the first uplink signal or the second uplink signal, based on the first information and the second information, and a signal conversion unit for outputting conversion data in response to the uplink signal being the second uplink signal.

Input device driving method and interface device using the same

A display module includes: a display panel; and an input sensing circuit disposed thereon, the input sensing circuit including: a first sensor group including a plurality of first sensors arranged in a first direction; a plurality of first connection portions electrically connecting two adjacent first sensors of the plurality of first sensors, respectively; a second sensor group including a plurality of second sensors arranged in a second direction crossing the first direction; a plurality of second connection portions electrically connecting two adjacent second sensors of the plurality of second sensors, respectively; a first signal line electrically connected to one first sensor of the plurality of first sensors; a first measuring line electrically connected to the one first sensor among the plurality of first sensors and spaced apart from the first signal line; and a second measuring line electrically connected to another first sensor among the plurality of first sensors.

Input sensing circuit and display module having the same

An electronic device includes: a display panel configured to display an image; an input sensor comprising transmission electrodes on the display panel and reception electrodes that insulately cross the transmission electrodes; and a sensor controller configured to operate in a first mode or a second mode different from the first mode, wherein, in the first mode, the sensor controller is configured to transmit an uplink signal to an input device through the input sensor and to receive a downlink signal from the input device through the input sensor, wherein an input sensing frame, in which the sensor controller operates in the first mode, comprises an uplink period for which the uplink signal is provided to the input sensor, and the sensor controller is configured to not apply the uplink signal to at least a portion of the transmission electrodes during the uplink period.

An electronic device includes: a display panel configured to display an image; an input sensor on the display panel and configured to sense a first input in first and second modes; a sensor controller connected to the input sensor; and an input device configured to transceive a signal with the sensor controller through the input sensor and to provide a second input to the input sensor, wherein the sensor controller is configured to sense the first input through the input sensor during a first input sensing frame and the second input generated by the input device during a second input sensing frame, and wherein the sensor controller is configured to transmit, to the input sensor, an integrated transmission signal comprising a recognition signal for recognizing the input device and a first mode sensing signal for sensing the first input in the first mode during a first operation period of the first input sensing frame.

An electronic device includes: an input sensor on a display panel; and a sensor controller configured to operate in a first mode for sensing a first input by an input device or a second mode for sensing a second input through the input sensor, the sensor controller being configured to transmit an uplink signal to the input device through the input sensor and to receive a downlink signal from the input device through the input sensor in the first mode, wherein an input sensing frame comprises an uplink period in which the uplink signal is provided to the input sensor, and an interval between a start time point of the display frame and a start time point of the uplink period is variable in a unit of at least one input sensing frame during k input sensing frames, where k is an integer equal to or greater than 2.

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Busan, South Korea

Byeongkyu Jeon