Goyang, South Korea
Goyang, South Korea

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Patent
Silicon Works Co. | Date: 2016-08-04

Disclosed is a lighting apparatus using LEDs as a light source. The lighting apparatus may include: a dimming control unit configured to provide one of first and second control signals as a dimming control signal, the first control signal corresponding to a dimming signal inputted in response to connection of a dimmer, the second control signal corresponding to disconnection of the dimmer; and a driving current control circuit configured to control a driving current corresponding to light emission of a lighting unit in response to the dimming control signal of the dimming control unit.


Patent
Silicon Works Co. | Date: 2016-08-04

Disclosed is a lighting apparatus using an LED as a light source. The lighting apparatus may connect first and second lighting units in series or parallel according to a rectified voltage, change one or more of first and second driving currents corresponding to light emissions of the first and second lighting units, and have the universality for rectified voltages.


Patent
Silicon Works Co. | Date: 2016-08-18

Disclosed is a display device capable of assigning unique information to a plurality of source drivers and easily controlling an operation sequence and operation time. The display device may include: a timing controller configured to generate an input signal having a clock signal embedded between data signals each including a pixel data packet and a control data packet, and provide the input signal to a source driver; and a source driver configured to receive the input signal, sense pixel information of a display panel, and enabled to transmit the pixel information to the timing controller in response to preset information contained in the control data packet, and configured to transmit the pixel information to the timing controller during an operation time corresponding to operation time information contained in the control data packet.


Patent
Silicon Works Co. | Date: 2016-09-27

Provided is a display driving circuit capable of achieving high speed and high resolution by improving an output slew rate. The display driving circuit may include: a gradation voltage generation unit including a plurality of resistor strings corresponding to a plurality of groups into which channels corresponding to display data are grouped, the plurality of resistor strings being configured to provide gradation voltages to digital-analog converters (DACs) corresponding to the respective channels of the corresponding groups; and a display driving unit including the DACs and buffers corresponding to the respective channels, wherein the DACs convert the corresponding display data into data voltages using the gradation voltages, and the buffers provide the corresponding data voltages as source driving signals to a display panel.


Patent
Silicon Works Co. | Date: 2016-12-14

An output circuit of a display driving device may include: a first buffer including first and third output units driven in a range of a positive output signal included in an output voltage domain corresponding to a display panel; a second buffer including second and fourth output units driven in a range of a negative output signal included in the output voltage domain corresponding to the display panel; a first body control unit configured to control a body voltage of the first output unit and the second output unit; and a second body control unit configured to control a body voltage of the third output unit and the fourth output unit.


Patent
Silicon Works Co. | Date: 2016-02-03

Disclosed is a control circuit of an LED lighting apparatus which is capable of improving power efficiency. The control circuit controls light emission of one or more LED groups in response to changes of a rectified voltage, and includes a current source configured to provide a primary current using a driving current outputted through a current path of a driver and a secondary current using a rectified current provided to a plurality of LED groups. Thus, the control circuit can perform a charging operation using a current provided from the current source, and provide a charge voltage to an additional device.


Patent
Silicon Works Co. | Date: 2016-04-12

The present disclosure provides a technology related to a multi-chip touch system. In the multi-chip system, in a case in which two touch ICs share one receiving electrode and an even number of receiving electrodes are connected to one touch IC, when another touch IC senses the shared receiving electrode, the one touch IC does not connect another receiving electrode, which that is disposed at the outermost portion, as well as the shared receiving electrode.


Patent
Silicon Works Co. | Date: 2016-03-07

Disclosed is an apparatus and method for transmitting a display signal having a protocol including a dummy signal and a clock signal. The apparatus for transmitting a display signal may include: a transmitter configured to transmit a display signal in which a dummy signal and a clock signal are sequentially embedded between image data; and a receiver configured to receive the display signal. Since a sufficient margin can be secured before and after the point of time that the clock signal is extracted between the image data, a stable operation of the system can be guaranteed, and the system interface can prevent the occurrence of EMI.


Patent
Silicon Works Co. | Date: 2016-09-29

The present invention introduces a touch sensing apparatus capable of adjusting an Rx frequency band, and the touch sensing apparatus can adjust the width of the Rx frequency band of a driving signal which is applied from a driving electrode of a touch screen panel and transferred to a receiving electrode of the touch screen panel, using a high pass filter and a low pass filter which are implemented with a differentiator and an integrator, respectively. The touch sensing apparatus can adjusting the resistances of a plurality of resistors and the capacitance of a capacitor, thereby selectively receiving a driving signal at each frequency and amplifying the received driving signal to a predetermined magnitude. Thus, since the touch sensing apparatus does not requires a separate filter for removing noise contained in the driving signal, the system can be simplified.


Disclosed is a source driver including a sensing circuit capable of sensing whether a short occurred between a data output line and a power line. The source driver may include: an output circuit configured to output a preset voltage to a display panel in a checking mode; and a sensing circuit configured to sense whether data output lines connecting the output circuit and the display panel are shorted, using the preset voltage, and output a sensing result signal.

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