Abstract: The present invention relates to a pixel sensing device capable of compensating for an error included in a test current itself by supplying, when a pixel current is sensed, the test current used in the sensing of each channel circuit error.
Abstract: Disclosed is a lamp control device. The lamp control device may include: a lamp having an LED channel; a channel resistor corresponding to the LED channel; and a controller configured to boost a channel resistor voltage applied to the channel resistor, and retain a channel current of the LED channel as a target current, using the boosted channel resistor voltage.
Type:
Application
Filed:
November 18, 2020
Publication date:
March 11, 2021
Applicant:
Silicon Works Co., Ltd.
Inventors:
Wanyuan Qu, Se Won Lee, Byeong Ho Jeong, Ju Pyo Hong, Ju Hyun Lee, Sung Hwan Kim, Hai Feng Jin, Joo Wan Ha, Tae Young Yoo
Abstract: Disclosed is a touch sensing device for preventing touch sensing performance from being reduced by a parasitic capacitance. The touch sensing device includes a plurality of buffers buffering a difference between a reference signal and a reception signal received from a touch electrode and generating first and second currents corresponding to a buffered signal, a plurality of current mirror units generating a first output signal using a first mirror current generated through mirroring of the first current and a third mirror current generated through mirroring of the second current and generate a second output signal using a second mirror current generated through mirroring of the first current and a fourth mirror current generated through mirroring of the second current, and a plurality of integrators integrating a difference between the first output signal from an nth current mirror unit and the second output signal from an (n?1)th current mirror unit.
Type:
Grant
Filed:
December 18, 2019
Date of Patent:
March 9, 2021
Assignee:
SILICON WORKS CO., LTD.
Inventors:
Hee Jin Lee, Jae Hwan Lee, Jeong Kwon Nam, Kyu Tae Lee, Hyun Soo Chung, Jin Yoon Jang, Hee Ra Yun, Kyung Min Shin, Mun Seok Kang
Abstract: In generating a mask signal used to recover a clock signal embedded in an interface signal, the mask signal may be generated by comparing a plurality of comparison signals, generated by delaying a plurality of mask rising signals by a predetermined time, with the clock signal and selecting one mask rising signal used to generate a comparison signal close to one portion of the clock signal from among the plurality of mask rising signals.
Abstract: A touch sensing device of a current driving type, which separately drives a parasitic capacitor by using an electric charge controller, includes a parasitic capacitance charger connected to a touch sensing line to charge a parasitic capacitor of a touch electrode connected to the touch sensing line with a predetermined charging current during a charging period and a sensing unit connected to the touch sensing line during a first driving period to drive a capacitor of the touch electrode with a first driving current corresponding to a difference voltage between a first voltage, charged into the parasitic capacitor when a touch does not occur, and a second voltage charged into the parasitic capacitor when a touch occurs and to sense a first touch voltage of the capacitor based on the first driving current during a first sensing period.
Type:
Grant
Filed:
December 18, 2019
Date of Patent:
March 9, 2021
Assignee:
SILICON WORKS CO., LTD.
Inventors:
Hee Jin Lee, Jae Hwan Lee, Jeong Kwon Nam, Kyu Tae Lee, Hyun Soo Chung, Jin Yoon Jang, Hee Ra Yun, Kyung Min Shin, Mun Seok Kang
Abstract: In generating a mask signal to be used when a clock signal embedded in an interface signal is recovered, when a mask rising signal for generating the mask signal is located in a data signal interval and a data signal indicates a high level, the mask signal may be generated in accordance with a falling edge of the data signal other than the mask rising signal.
Abstract: The present invention discloses a source driver for a display apparatus, which drives a display panel using display data and senses a pixel signal of the display panel. The source driver may include a sensor and ADC (Analog-digital Converter) which provide the pixel sensing signal obtained by comparing a reference voltage and a pixel signal of the display panel using one buffer at a sensing period, and drive the source signal to the display panel using the buffer at a driving period.
Abstract: Disclosed is a source drive integrated circuit comprising: a core unit, a channel processing unit provided in each of a channel area disposed in a first side of the control area and a channel area disposed in a second side of the control area facing the first side to convert digital data, corresponding to a digital image signal transferred from the core unit, into a data voltage corresponding to an analog image signal and to output the data voltage, a resistor string provided in at least one of a pad area disposed in a third side of the control area and a pad area disposed in a fourth side of the control area facing the third side to generate a gamma voltage for converting the digital data into the data voltage and to supply the gamma voltage to the channel processing unit, and N number of gamma pads.
Type:
Grant
Filed:
July 16, 2019
Date of Patent:
February 16, 2021
Assignee:
SILICON WORKS CO., LTD.
Inventors:
Myeong Woo Oh, Cheol Woong Lee, Jae Sup Han, Hee Ju Kwak, Kyu Hyeong Lee
Abstract: Disclosed are a communication method between a master controller and slave controllers, a slave controller for the communication method, and a battery management system using the communication method and the slave controller, in which the master controller receives safety information about battery cells through a plurality of channels even when each of a plurality of slave controllers includes only one micro controller unit, thereby minimizing the increase in the cost and enhancing the safety of the battery management system. The communication method includes performing bidirectional communication between a master controller and first to Nth (where N is an integer equal to or more than two) slave controllers through a first communication channel, and receiving, by the master controller, an indication signal through a second communication signal via the first to Nth slave controllers.
Type:
Grant
Filed:
October 30, 2018
Date of Patent:
February 9, 2021
Assignees:
SILICON WORKS CO., LTD., LG CHEM, LTD.
Inventors:
Myoung Su Song, Jae Wan Kim, Jin Yong Jeon, Ki Suk Cho, Il Kwon Kim, Seung Jun Choi, Kyu Ho Kim, Kyoung Choon Min, Ki Young Lee, Won Gon Kim
Abstract: Disclosed is a Schottky barrier diode which may be applied to an application that requires a low off current (Ioff), such as a mobile integrated circuit. The Schottky barrier diode can improve a blocking characteristic for a backward current flow while maintaining an advantage of a turn-on current, by improving the structure of a contact surface that is pinched off by depletion.
Abstract: Disclosed is an LED lighting apparatus. The LED lighting apparatus may include a leakage current control unit configured to provide a leakage current path when a rectified voltage is retained at a predetermined voltage or less for a preset time or more, and a leakage current and retention current may be discharged through a leakage current path.
Type:
Grant
Filed:
July 25, 2017
Date of Patent:
February 2, 2021
Assignee:
Silicon Works Co., Ltd.
Inventors:
Gyeong Sik Mun, Sang Young Lee, Ki Soo Kwon, Ki Chul An, Yong Geun Kim
Abstract: An embodiment provides a power management integrated circuit including, inside thereof, a capacitor configured to simulate an inductor and multiple current sources configured to simulate an inductor voltage, wherein the power management integrated circuit is capable of testing whether an internal element normally operates without a separate test device including an inductor.
Abstract: The present invention provides a panel driving device: supplying a first signal to a first sensor electrode by using a first amplifier, so as to detect a change in the capacitance of the first sensor electrode; supplying a second signal, having the same waveform as that of the first signal, to a second sensor electrode adjacent to the first sensor electrode by using a second amplifier; and detecting the proximity or a touch of an external object toward the sensor electrodes according to the change in the capacitance of the first sensor electrode.
Abstract: Disclosed is a driver for a display device, which is improved to stably sense pixels. The driver includes a multiplexer configured to output the sensing signal of a first input stage or second input stage, a first switch configured to switch a connection between an odd channel and the first input stage, a second switch configured to switch a connection between an even channel and the second input stage, and a switching circuit configured to switch a connection between a common power line and the first input stage or the second input stage.
Type:
Application
Filed:
June 26, 2020
Publication date:
January 7, 2021
Applicant:
Silicon Works Co., Ltd.
Inventors:
Ju Young Shin, Min Young Jeong, Ho Sung Hong, Jung Bae Yun
Abstract: Embodiments of the present disclosure relate to a display driving device and a display device including the same. The display driving device includes a source driving circuit configured to convert image data of respective channels into source signals; a polarity control circuit configured to receive polarity data for the respective channels, and generate a polarity control signal for controlling polarities of the source signals depending on a logic combination of the polarity data; and a multiplexer circuit configured to output the source signals to data lines in response to the polarity control signal.
Type:
Grant
Filed:
June 13, 2019
Date of Patent:
January 5, 2021
Assignee:
Silicon Works Co., Ltd.
Inventors:
Hyun Woo Jeong, Kwang Myoung Kang, Yong Min Kim, Ha Na Choi, Da Sol Won, Se Hyuk An
Abstract: Disclosed is a lamp control device. The lamp control device may include: a lamp having an LED channel; a channel resistor corresponding to the LED channel; and a controller configured to boost a channel resistor voltage applied to the channel resistor, and retain a channel current of the LED channel as a target current, using the boosted channel resistor voltage.
Type:
Grant
Filed:
December 30, 2015
Date of Patent:
January 5, 2021
Assignee:
Silicon Works Co., Ltd.
Inventors:
Wanyuan Qu, Se Won Lee, Byeong Ho Jeong, Ju Pyo Hong, Ju Hyun Lee, Sung Hwan Kim, Hai Feng Jin, Joo Wan Ha, Tae Young Yoo
Abstract: One exemplary embodiment provides a touch sensing device including: a first processor configured to identify a defective sensed value that satisfies a defect determination condition among the first sensed values of a plurality of electrodes disposed on a panel in a state where there is no touch or proximity of an external object to the panel; a storage unit configured to store information indicating a defective electrode corresponding to the defective sensed value among the plurality of electrodes; and a second processor configured to correct a sensed value corresponding to the defective electrode among the second sensed values of the plurality of electrodes using the sensed value of at least one electrode adjacent to the defective electrode.
Abstract: The present disclosure provides a display device for simultaneously performing display update and touch sensing in some intervals. The display device senses a touch by dividing ground voltage into two and changing one ground voltage and a data driving circuit may comprise a configuration for the signal conversion between the two ground voltages.
Abstract: Disclosed is a source signal driving apparatus capable of implementing channels at high integration density. The source signal driving apparatus is configured to sequentially output source signals by sequentially delaying enable time points of enable signals provided to channel circuits.
Abstract: A display device is configured to float a display electrode coupled to a touch sensor by parasitic capacitance when an uplink signal is transmitted to a touch pen through the touch sensor.