Samsung Electronics Co., Ltd.

Chang-Ju Lee

Yoon-Kyung Choi

Young-Joo Lee

Kwang-Ho Choi

Jin-Bong Kim

Jong-Oh Lee

Se-won Seo

Heon Jekal

Steve J Kim

Sang Hoon Lee

Tae Sung Kim

Sang-Woo Kim

Hyoung-rae Kim

Yoonkyung Choi

San-ho Byun

Soo Yong Kim

Hyun Pil Kim

Jun Ho Huh

Kyoung Hwan Kwon

Hyon Jun Choi

Jaeho Park

A display driver integrated circuit, System-On-Chip, and display system including the System-On-Chip are provided. A display driver integrated circuit (IC) includes: a clock generator configured to generate an internal operating clock; and a control circuit configured to provide a data signal to a pixel array based on the internal operating clock, wherein the data signal corresponds to frame data, wherein the control circuit is further configured to, in a frame data update period: receive first frame data, perform a first synchronization operation on the internal operating clock based on the first frame data, and provide a first data signal to the pixel array, and wherein the control circuit is further configured to, in a low power mode (LPM) period when an update of the frame data is not performed: transmit a sync request signal based on a result of monitoring a state of a display panel, receive a frequency signal from a System-on-Chip (SoC) in response to the sync request signal, and perform a second synchronization operation on the internal operating clock based on the frequency signal.

Display driver integrated circuit, system-on-chip, and display system including the system-on-chip

A method includes searching a technical document including a first, second, and third data fields based on search terms and search year ranges related to a technical field, generating a keyword set using the first, second, and third data fields of the searched technical document, scoring a plurality of keywords included in the keyword set, and selecting some of the plurality of keywords, re-searching the technical document related to the technical field, using the selected keywords, scoring the re-searched technical document to derive a representative document representing the technical field, and deriving a representative keyword representing the technical field, using the second data field included in the representative document, wherein the first data field includes a title of the technical document, the second data field includes a summary of the technical document, and the third data field includes keywords of the technical document.

Method and apparatus for deriving keywords based on technical document database

Embodiments relate to a gate driving integrated circuit and an operating method thereof operating in a time-division method divided into a display period and a touch period. The gate driving integrated circuit includes a charging circuit, a gate control circuit, and a discharging circuit. The charging circuit charges a memory element. The discharging circuit discharges the memory element. The gate control circuit outputs a gate-on voltage to a gate line based on the charged memory element in during display period. The gate control circuit electrically disconnects the memory element from the gate control circuit during the touch period.

Gate driving integrated circuit for a touch display and operating method thereof

A touch screen panel is provided. The touch screen panel includes: a sensing area comprising a plurality of first electrodes arranged in a matrix form in first and second directions of a substrate and a plurality of second electrodes extending in the first direction, the plurality of second electrodes being arranged alternately with the plurality of first electrodes in the second direction; a channel wiring area including a plurality of channel wires configured to transmit signals of the plurality of first electrodes and signals of the plurality of second electrodes, the channel wiring area being disposed around the sensing area; and an electrode wiring area comprising a plurality of electrode wires connecting the plurality of first electrodes and the plurality of second electrodes to the plurality of channel wires, the electrode wiring area being in the sensing area, wherein at least two electrodes, from among the first electrodes, that are disposed in a same column are connected to different channel wires.

Touch screen panel, touch sensing controller, and touch sensing system including the same

A touch panel comprises multiple first sensing electrodes constituting multiple rows, wherein the first sensing electrodes in each of the rows are electrically connected to each other, multiple second sensing electrodes constituting multiple columns crossing the rows, wherein the second sensing electrodes in each of the columns are electrically connected to each other, and multiple conductive patterns disposed between the first and second sensing electrodes. Each of the first and second sensing electrodes comprises multiple protrusions protruding outward from a corresponding boundary and multiple concave portions extending inward between the protrusions in a plan view. Pairs of protrusions extending from opposite sides of each of the first and second sensing electrodes are disposed opposite each other and are symmetrical to each other.

Touch panel comprising sensing electrodes with protrusions

A noise spectrum estimator for a touch panel includes an adaptive impulse response generation unit configured to generate impulse response information by performing an adaptive training operation on noise data, the noise data being generated by sampling a plurality of noise signals received from the touch panel, and an estimation unit configured to generate noise frequency spectrum estimation information associated with the noise data by performing a fast Fourier transform (FFT) on the impulse response information.

Noise spectrum estimator and touch screen device including the same

A capacitive multi-touch system includes a touch sensor pane, a front-end circuit, and a digital signal processor. The touch sensor panel generates a capacitance signal corresponding to a touch input. The front-end circuit converts the capacitance signal to a sensing channel signal. The digital signal processor receives a common voltage (V) from a display device, calculates a noise interval of two neighboring noise peaks of the common voltage, and performs a noise filtering operation on the sensing channel signal using a noise filter path. The noise filter path is selected from a plurality of noise filter paths based on the noise interval.

Capacitive multi-touch system and method of controlling the same

A method of calibrating a touch sensing system includes connecting an impedance load to a touch sensing signal path in a gain adjustment mode, adjusting a gain of an amplifier that amplifies a signal input to the touch sensing signal path in the gain adjustment mode by evaluating an output signal of the amplifier, and disconnecting the impedance load from the touch sensing signal path after adjusting the amplifier gain.

Method and apparatus controlling touch sensing system and touch sensing system employing same

A semiconductor device includes a voltage regulator. The device includes an operational amplifier configured to compare an input voltage with a feedback voltage and output an output voltage, an up-resistor connected between an output of the operational amplifier and a first node, a down-resistor connected between a second node and a ground voltage terminal, and a switching unit including a fuse box connected between a third node outputting the feedback voltage and a fourth node having a variable resistance value, and configured to connect the first node with the fourth node and the second node with the third node, or connect the first node with the third node and the second node with the fourth node.

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Suwon-si, South Korea

Chang-Ju Lee