Lx Semicon Co., Ltd.

Silicon Works Co., Ltd.

Seong Sik Yoon

Jung Min Choi

Jong Min Park

Seong Wha Hong

Jung Hyun Tark

Sang Woo Kim

Moon Ho Jang

Hee Yoon Jung

Dal Eun Lee

Hong Kyu Choi

Ju Hyoung Lee

A power management circuit includes a control signal reception circuit configured to receive a power control signal for controlling an operation of the power management circuit in correspondence to a driving mode of a panel, from a microcontroller which receives information on the driving mode of the panel; an output signal change circuit configured to change an output signal of the power management circuit in response to the power control signal; a control target selection circuit configured to select a control target circuit to which the output signal is to be transferred; and an output signal transmission circuit configured to transfer the output signal to the control target circuit.

Power management circuit and touch/display device including the same

A power circuit according to the present disclosure may include a multiplexer connected to a first power line and a second power line and selecting and outputting one of a first voltage supplied through the first power line and a second voltage supplied through the second power line. Further, the power circuit may include a first power circuit which generates a first driving voltage and a second driving voltage by using a voltage supplied from the multiplexer, recognizes whether there is the first voltage supplied through the first power line, and does not output the first driving voltage when the first voltage is not recognized.

Touch/display driving circuit and device including same

A display driving device capable of operating a source driver integrated circuit (IC) in a low power mode during a touch sensing period includes a source driver IC configured to operate in a first low power mode in which an analog data processing unit is deactivated or operate in a second low power mode in which both of the analog data processing unit and a digital data processing unit are deactivated, during a touch sensing period of a first frame; and a readout IC configured to supply touch sensor driving signals to touch sensors during the touch sensing period and receive touch sensing data from the touch sensors according to the touch sensor driving signals.

Apparatus and method for driving display

The present disclosure relates to a technology for supplying power to a display device and provides a device which checks a control value for each mode stored in a memory according to a mode indication signal in a simple form received from an external device and controls operation states of power converting circuits in each mode according to the control value for each mode.

Display device and power management device for supplying power to display device

The present disclosure relates to a touch power management circuit and a touch driving system comprising the same, and more particularly, relates to a touch power management circuit to generate signals required for a touch driving by using voltage sources different in a pen touch driving period and a finger touch driving period in order to reduce power consumption of a display device and a touch driving system comprising the touch power management circuit.

Touch power management circuit and touch driving system including the same

The present embodiment relates to a touch power management circuit and a touch driving system including the same, and more particularly, to a touch power management circuit that prevents unnecessary power consumption during a pen touch driving period in order to reduce power consumption of a display device, and a touch driving system including the same.

Disclosed is a technology that supplies a signal to a panel driving integrated circuit (IC). A plurality of signals having different characteristics are stably provided to a panel driving IC according to a display operation or a touch operation, by controlling capacitance connected to a transmission conduction wire.

Display device including device for supplying signal to panel driving integrated circuit

The present disclosure, which relates to a power management integrated circuit to dynamically control ripples of driving voltages, allows reducing power consumption of the power management integrated circuit in a section where there is no operation for a display.

Display device and power management integrated circuit

Power consumption of a display device is reduced by controlling power supplies in driving sections and in non-driving sections to be different.

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Daejeon, South Korea

Seong Sik Yoon