Abstract: The present invention provides an apparatus for inspecting a welding state in a welded portion for an electronic or mechanical coupling in a lithium secondary battery, the apparatus including: a measuring unit configured to obtain data for deriving a resistance value of the welded portion by allowing a resistance measuring probe to contact the welded portion; and a controller configured to communicate with the measuring unit, determine the resistance value of the welded portion by receiving the data obtained from the measuring unit, and determine whether a weak welding was performed by comparing the determined resistance value with a threshold resistance value, in which the measuring unit is configured to allow the resistance measuring probe to contact one end and the other end of the welded portion.

Abstract: A semiconductor system includes a controller configured to apply a command address, a first chip selection signal, and a second chip selection signal, and a semiconductor device including a first rank and a second rank configured to calibrate each termination resistance, based on the command address, the first chip selection signal, and the second chip selection signal.

Abstract: A display device includes: a display panel including a plurality of pixels and a display driver configured to receive input image data, and display an image The plurality of rows are divided into row groups, and each of the row groups includes at least one row among the plurality of rows. The display driver is configured to, in a blank period different from the display period, while selecting each of the plurality of rows, acquire sensing data associated with pixels of the selected row through the sensing lines, and apply an initialization data signal to the plurality of pixels of the plurality of rows through the data lines before the at least one row of each of the row groups is selected.

Abstract: A display device includes a pixel that has a first transistor having a drain electrode that is connected to a first power voltage node and a source electrode that is connected to a second power voltage node, a second transistor connected between a data line and a gate electrode of the first transistor, and a third transistor connected between a sensing line and the source electrode of the first transistor, a data driver applying a bias voltage to the data line during a sensing period, a sensing driver sensing an electrical characteristic of the pixel through the sensing line during the sensing period, and a controller for adjusting the bias voltage according to the first power voltage according to input image data.

Abstract: A display device includes a plurality of pixels, a power supply, a voltmeter, and a timing controller. The power supply is configured to generate an initialization voltage to be supplied to a sensing pixel among the pixels. The voltmeter is configured to measure a first value of the initialization voltage supplied to the sensing pixel during an active period of a frame period and a second value of the initialization voltage supplied to the sensing pixel during a vertical blank period of the frame period. The timing controller is configured to generate rewrite image data that is supplied to the sensing pixel during the vertical blank period. The rewrite image data is generated from image data applied to the pixels during the active period and a difference between the first and second values.

Abstract: A semiconductor device includes a multi-channel active pattern, a plurality of gate structures on the multi-channel active pattern and spaced apart from each other in a first direction, the plurality of gate structures including a gate electrode that extends in a second direction different from the first direction, a source/drain recess between the adjacent gate structures, and a source/drain pattern on the multi-channel active pattern in the source/drain recess, wherein the source/drain pattern includes: a semiconductor liner layer including silicon-germanium and extending along the source/drain recess, a semiconductor filling layer including silicon-germanium on the semiconductor liner layer, and at least one or more semiconductor insertion layers between the semiconductor liner layer and the semiconductor filling layer, and wherein the at least one or more semiconductor insertion layers have a saddle structure.

Abstract: Disclosed is a method for operating and participating in a voice chat room subordinate to a message chat room is disclosed. The method for operating a voice chat room subordinate to a message chat room includes: managing, by a server, messages transmitted and received through the message chat room in which a first user and a second user participate; receiving, by the server, a request for creation of the voice chat room subordinate to the message chat room from the first user; creating, by the server, the voice chat room in response to the received request for creation of the voice chat room; providing, by the server, information that the voice chat room is being operated to the second user through the message chat room; providing, by the server, information that the voice chat room is being operated to the second user through a message chat room list.

Abstract: A display device includes: a plurality of pixel blocks each including a plurality of pixels; a scan driver supplying a scan signal to the scan lines and to supply a control signal to the control lines; a data driver supplying an image data voltage or a low grayscale data voltage to the data lines; and a power supply supplying a reference voltage to the pixels, wherein the pixels are configured to receive the image data voltage during a first scan period of a frame, and to receive the low grayscale data voltage during a second scan period of the frame, and the reference voltage supplied to a first pixel row of at least one of the pixel blocks in the first scan period is different from the reference voltage supplied to a last pixel row of at least one of the pixel blocks in the first scan period.

Abstract: A display device includes a data driver providing a data voltage to each of multiple pixels, a scan driver providing first and second scan signals to each of the pixels, and a controller to control the data driver and the scan driver. The scan driver performs a first active scan operation that sequentially provides the first and second scan signals to the pixels in an active period of a first frame period, and initiates a dummy scan operation that sequentially provides the second scan signal to the pixels in a blank period of the first frame period. When a second frame period starts before the dummy scan operation for the pixel in a last row, the data driver changes a level of the data voltage in an overlap period in which the dummy scan operation and a second active scan operation in the second frame period are simultaneously performed.

Abstract: A display device, includes: a scan driver configured to sequentially supply scan signals having a turn-on level to the first scan line and the second scan line during a first period and to concurrently supply scan signals having a turn-on level to the first scan line and the second scan line during a second period after the first period, wherein: a mask period corresponds to a difference between a start point of the second period and a start point of the first period in a next frame period, a first frame period and a second frame period have different mask periods, a third frame period between the first frame period and the second frame period has a same mask period as the first frame period, and a fourth frame period between the first frame period and the second frame period has a same mask period as the second frame period.

Abstract: A semiconductor device includes an active pattern including a lower pattern and a plurality of sheet patterns; a gate structure disposed on the lower pattern and surrounding the plurality of sheet patterns; and a source/drain pattern filling a source/drain recess formed on one side of the gate structure. The source/drain pattern includes a first semiconductor pattern extending along the source/drain recess and contacting the lower pattern, a second and third semiconductor patterns sequentially disposed on the first semiconductor pattern, a lower surface of the third semiconductor pattern is disposed below a lower surface of a lowermost sheet pattern, a side surface of the third semiconductor pattern includes a planar portion, and a thickness of the second semiconductor pattern on the lower surface of the third semiconductor pattern is different from a thickness of the second semiconductor pattern on the planar portion of the side surface of the third semiconductor pattern.

Abstract: In a display device, each of pixels includes a light emitting element and a pixel circuit which is connected to the light emitting element at a first node and drives the light emitting element in response to a corresponding driving scan signal among driving scan signals during a display period. The pixel circuit is connected to a corresponding readout line among readout lines at a second node. The sensing circuit senses a potential of the first node through the corresponding readout line during a blank period, and each of frames includes the display period and the blank period. At least two driving scan signals among the driving scan signals respectively include a plurality of rewriting periods, each of which is activated during the blank period corresponding thereto, and the rewriting periods of the driving scan signals have different durations from each other.

Abstract: Disclosed is a method for operating and participating in a voice chat room subordinate to a message chat room is disclosed. The method for operating a voice chat room subordinate to a message chat room includes: managing, by a server, messages transmitted and received through the message chat room in which a first user and a second user participate; receiving, by the server, a request for creation of the voice chat room subordinate to the message chat room from the first user; creating, by the server, the voice chat room in response to the received request for creation of the voice chat room; providing, by the server, information that the voice chat room is being operated to the second user through the message chat room; providing, by the server, information that the voice chat room is being operated to the second user through a message chat room list.

Abstract: A display device includes a display panel which operates in a sensing mode or an emission mode, and a data driver electrically connected to the display panel. The display panel includes a first pixel, a second pixel, a third pixel, a fourth pixel, a fifth pixel, a sixth pixel, a first scan line, a second scan line, a first data line, the second pixel. The data driver includes a first switch, a second switch, and an analog front end. The sensing mode includes a first period in which a first scan signal is provided to the first scan line and the first switch is turned on, a second period in which the first scan signal is provided to the first scan line and the second switch is turned on, and a third period in which a second scan signal is provided to the second scan line.

Abstract: A semiconductor device includes an active pattern including a lower pattern and a plurality of sheet patterns; a gate structure disposed on the lower pattern and surrounding the plurality of sheet patterns; and a source/drain pattern filling a source/drain recess formed on one side of the gate structure. The source/drain pattern includes a first semiconductor pattern extending along the source/drain recess and contacting the lower pattern, a second and third semiconductor patterns sequentially disposed on the first semiconductor pattern, a lower surface of the third semiconductor pattern is disposed below a lower surface of a lowermost sheet pattern, a side surface of the third semiconductor pattern includes a planar portion, and a thickness of the second semiconductor pattern on the lower surface of the third semiconductor pattern is different from a thickness of the second semiconductor pattern on the planar portion of the side surface of the third semiconductor pattern.

Abstract: A semiconductor device includes a multi-channel active pattern, a plurality of gate structures on the multi-channel active pattern and spaced apart from each other in a first direction, the plurality of gate structures including a gate electrode that extends in a second direction different from the first direction, a source/drain recess between the adjacent gate structures, and a source/drain pattern on the multi-channel active pattern in the source/drain recess, wherein the source/drain pattern includes: a semiconductor liner layer including silicon-germanium and extending along the source/drain recess, a semiconductor filling layer including silicon-germanium on the semiconductor liner layer, and at least one or more semiconductor insertion layers between the semiconductor liner layer and the semiconductor filling layer, and wherein the at least one or more semiconductor insertion layers have a saddle structure.

Abstract: There is provided a semiconductor device capable of improving performance and reliability of an element. The semiconductor device includes an active pattern extending in a first direction, and a plurality of gate structures spaced apart from each other in the first direction on the active pattern. Each gate structure comprises a gate electrode extending in a second direction and a gate spacer on a sidewall of the gate electrode and a source/drain pattern disposed between adjacent gate structures. The gate structure comprises a semiconductor liner layer and a semiconductor filling layer on the semiconductor liner layer, wherein the semiconductor liner layer and the semiconductor filling layer are formed of silicon-germanium. The semiconductor filling layer comprises an upper portion protruding in a third direction beyond an upper surface of the active pattern.

Abstract: A sensing circuit of a display device includes a sensing line initialization circuit which substantially simultaneously initializes a first sensing line and a second sensing line in a first sub-sensing period of a sensing period, a first line selection switch which couples the first sensing line to a sensing channel in the first sub-sensing period, a second line selection switch which couples the second sensing line to the sensing channel in a second sub-sensing period of the sensing period, and the sensing channel which samples a first sensing voltage of the first sensing line in a first sampling period of the first sub-sensing period, and samples a second sensing voltage of the second sensing line in a second sampling period of the second sub-sensing period. The second sensing line is not initialized during a period from the first sampling period to the second sampling period.

Abstract: A semiconductor device includes an active pattern which includes a lower pattern, and a sheet pattern that is spaced apart from the lower pattern in a first direction, a gate structure on the lower pattern that includes a gate electrode that surrounds the sheet pattern, the gate electrode extending in a second direction that is perpendicular to the first direction, and a source/drain pattern on the lower pattern and in contact with the sheet pattern. A contact surface between the sheet pattern and the source/drain pattern has a first width in the second direction, and the sheet pattern has a second width in the second direction that is greater than the first width.

Abstract: A display device includes a display panel which operates in a sensing mode or an emission mode, and a data driver electrically connected to the display panel. The display panel includes a first pixel, a second pixel, a third pixel, a fourth pixel, a fifth pixel, a sixth pixel, a first scan line, a second scan line, a first data line, the second pixel. The data driver includes a first switch, a second switch, and an analog front end. The sensing mode includes a first period in which a first scan signal is provided to the first scan line and the first switch is turned on, a second period in which the first scan signal is provided to the first scan line and the second switch is turned on, and a third period in which a second scan signal is provided to the second scan line.