Abstract: A fluid level measurement system using a buoyant body includes a guide part installed in a direction perpendicular to the bottom surface of a fluid storage tank, and provided with a space in which a fluid can move therein; a buoyant body inserted into the guide part, and configured to float along the surface of the fluid inside the guide part; and a measurement part coupled to the top end of the guide part, and configured to measure the level of the surface of the fluid inside the fluid storage tank by transmitting a signal toward the buoyant body in the inner space of the guide part and then receiving a signal reflected from the buoyant body.

Abstract: A pseudo dual port memory device in which an operating speed is improved and stability is increased is provided. The pseudo dual port memory device may include a memory cell, a pair of bit lines connected to the memory cell, a write driver, a sense amp, and a column multiplexer which is connected to the bit lines, receives a write multiplexer control signal and a read multiplexer control signal, connects the bit lines to the write driver in response to the write multiplexer control signal, and connects the bit lines to the sense amp in response to the read multiplexer control signal. A precharge control signal generation circuit which is connected to the column multiplexer may generate a precharge control signal on the basis of the read and write multiplexer control signals, and a bit line precharge circuit may precharge the bit lines based on the precharge control signal.

Abstract: A storage device including a nonvolatile memory device that includes a nonvolatile memory cell array including a string including first and second memory cells stacked sequentially, and an OTP memory cell array that stores reference count values, the first and second memory cells respectively connected to first and second word lines; a controller including a processor that generates a read command for the first memory cell; a read level generator including a counter that receives the read command and calculates an off-cell count value of memory cells connected to the second word line, and a comparator that receives a first reference count value from the OTP memory cell array, compares the off-cell count value with the first reference count value to determine a threshold voltage shift of the second memory cell, and determines a read level of the first memory cell based on the threshold voltage shift.

Abstract: The present invention relates to an apparatus and method for encoding and decoding an image by skip encoding. The image-encoding method by skip encoding, which performs intra-prediction, comprises: performing a filtering operation on the signal which is reconstructed prior to an encoding object signal in an encoding object image; using the filtered reconstructed signal to generate a prediction signal for the encoding object signal; setting the generated prediction signal as a reconstruction signal for the encoding object signal; and not encoding the residual signal which can be generated on the basis of the difference between the encoding object signal and the prediction signal, thereby performing skip encoding on the encoding object signal.

Abstract: A semiconductor device includes first and second substrates connected to each other. The second substrate includes a plate layer having first and second faces. Gate electrode layers are disposed on the first face of the plate layer. Channel structures extend through the gate electrode layers. Word-line cutting structures extend through the gate electrode layers and are spaced apart from each other. Via structures are disposed on the second face of the plate layer. Via connecting structures are disposed on the top face of the via structures. A width of the bottom face of each of the via structures is greater than a width of the top face of each of the via structures. A width of the bottom face of each of the via connecting structures is less than a width of the top face of each of the via connecting structures.

Abstract: A multi-directional operation switch structure seeks to improve the reliability of a product by minimizing tolerances that need to be managed by making two regions guiding the sliding movement of a slider to be formed by one holder in a switch structure in which a knob is configured on the outside of a casing, and the slider and a holder connected to the knob are inside the casing. Especially, the present disclosure can improve structural stability due to a double support structure and ensure reliability of slider movement by allowing the holder as well as the casing to withstand pressure resulting from external forces. In addition, the present disclosure can simplify a coupling structure and a support structure by configuring the slider to be coupled to the holder in a rotational manner, and the coupled slider to be limited in rotation by the casing.

Abstract: A display device includes a display panel including a first non-folding area, a second non-folding area, and a folding area disposed between the first non-folding area and the second non-folding area and foldable with respect to a folding axis, an adhesive layer disposed under the display panel, and a support layer disposed under the adhesive layer, the support layer including a first supporter overlapping the first non-folding area and the second non-folding area, and a second supporter overlapping the folding area. The first supporter and the second supporter include different materials from each other.

Abstract: The present invention relates to a method for preparing 2-(2,5-difluorophenyl)-3-carboxy-7-chloro-(4H)-4-benzopyranone represented by formula 1 below, a novel intermediate used therein, and a method for preparing the same. Specifically, an object of the present invention is to provide a novel preparation method, in which the compound of formula 1 below can be efficiently and economically synthesized and can be mass-produced in a high yield.

Abstract: A multi-directional operation switch structure seeks to improve the reliability of a product by minimizing tolerances that need to be managed by making two regions guiding the sliding movement of a slider to be formed by one holder in a switch structure in which a knob is configured on the outside of a casing, and the slider and a holder connected to the knob are inside the casing. Especially, the present disclosure can improve structural stability due to a double support structure and ensure reliability of slider movement by allowing the holder as well as the casing to withstand pressure resulting from external forces. In addition, the present disclosure can simplify a coupling structure and a support structure by configuring the slider to be coupled to the holder in a rotational manner, and the coupled slider to be limited in rotation by the casing.

Abstract: The present invention relates to pyrido-pyrimidin derivatives expressed by chemical formula (X), an isomer thereof or pharmaceutically acceptable salts thereof, a solvate or hydrate thereof, a pharmaceutical composition comprising same as an active ingredient, and the use thereof.

Abstract: Disclosed herein is an air conditioner and control method of determining duration to be maintained at a reference temperature of a mode change based on an outdoor temperature. The air conditioner includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve configured to guide refrigerant compressed in the compressor to either the outdoor heat exchanger or the indoor heat exchanger according to a cooling mode or a heating mode, and a controller configured to determine duration corresponding to a measured outdoor temperature, change the heating mode to the cooling mode when the measured indoor temperature is maintained at a first reference indoor temperature or greater for the determined duration, and change the cooling mode to the heating mode when a measured indoor temperature is maintained at a second reference indoor temperature or less for the determined duration.

Abstract: Provided is a heat pump system including a compressor for compressing a refrigerant the heat pump system including: an input interface configured to receive an input of an authentication code; a display configured to display the authentication code input through the input interface; and a controller to control an operation of the heat pump system according to whether a control program to control the operation is to be activated based on the authentication code input through the input interface.

Abstract: An air conditioner includes an outdoor unit, a plurality of mode change devices including at least one mode changer including a branch duct and a changing valve, and configured to receive a control signal from the outdoor unit to control an operation of the at least one mode changer. A plurality of indoor units are connected to the outdoor unit or the plurality of mode change devices. The outdoor unit may determine an operation mode to operate the plurality of mode change devices a plurality of times. Each of the plurality of indoor units may detect a temperature change of an indoor heat exchanger in response to the operation of the mode change devices, to determine the number of connected mode changers and a connectable mode changer candidate group based on the temperature change of the indoor heat exchanger.

Abstract: An air conditioner, a control device thereof, and a method of controlling the same are provided. The air conditioner includes a control device including a plurality of indoor unit operation changers, and an indoor unit connected to any one of the plurality of indoor unit operation changers, where at least one of the indoor unit and the control device determines an operation mode of each of the plurality of indoor unit operation changers respectively connected to a plurality of indoor units, detects an indoor unit operation changer at an operation mode corresponding to an operation of any one of the plurality of indoor units among the plurality of indoor unit operation changers, and determines an indoor unit operation changer connected to the indoor unit among the plurality of indoor unit operation changers on based on a result of detecting at least one of the indoor unit operation changers.

Abstract: A display device includes a display panel including a first non-folding area, a second non-folding area, and a folding area disposed between the first non-folding area and the second non-folding area and foldable with respect to a folding axis, an adhesive layer disposed under the display panel, and a support layer disposed under the adhesive layer, the support layer including a first supporter overlapping the first non-folding area and the second non-folding area, and a second supporter overlapping the folding area. The first supporter and the second supporter include different materials from each other.

Abstract: A semiconductor package includes a semiconductor chip; a connection member having a first surface on which the semiconductor chip is disposed and a second surface opposing the first surface, an encapsulant disposed on the first surface of the connection member and encapsulating the semiconductor chip, a passivation layer on the second surface of the connection member; and an UBM layer partially embedded in the passivation layer, wherein the UBM layer includes an UBM via embedded in the passivation layer and connected to the redistribution layer of the connection member and an UBM pad connected to the UBM via and protruding from a surface of the passivation layer, and a width of a portion of the UBM via in contact with the UBM pad is narrower than a width of a portion of the UBM via in contact with the redistribution layer.

Abstract: Provided is a display device including a display panel, a power delivery network (PDN), an image controller, and a PDN controller. The display panel may include a plurality of sub-panels. The PDN may be controlled by a control signal, respectively deliver voltages determined by the control signal to the plurality of sub-panels, and generate state information for determining the control signal. The image controller may receive to store frame image data, determine a number of frames to be integrated according to a window size, and integrate the frame image data of frames in the determined number into one image to generate integrated image data. The PDN controller may generate the control signal and a size adjusting signal based on the state information and the integrated image data, provide the generated control signal to the PDN, and may provide the generated size adjusting signal to the image controller. The size adjusting signal may adjust the window size.

Abstract: A display device includes a folding area at which the display device is foldable; a first non-folding area and a second non-folding area opposing each other with the folding area therebetween; a display panel; an adhesive member having a thickness of about 15 micrometers to about 18 micrometers; and a protective film facing the display panel with the adhesive member having the thickness of about 15 micrometers to about 18 micrometers therebetween, the adhesive member coupling the protective film to the display panel.

Abstract: A semiconductor package includes a frame having a first through-hole, a semiconductor chip disposed on the first through-hole an having an active surface on which a connection pad is disposed and an inactive surface, a first encapsulant covering at least a portion of the inactive surface and a side surface of the semiconductor chip, a connection structure disposed on the active surface of the semiconductor chip and including a redistribution layer electrically connected to the connection pad of the semiconductor chip and a ground pattern layer, a side surface cover layer covering at least an outer side surface of the frame, and a metal layer disposed on the upper surface of the first encapsulant and extending downwardly along the side surface cover layer to cover the side surface cover layer and a portion of the side surface of the connection structure.

Abstract: A semiconductor package includes a semiconductor chip; a connection member having a first surface on which the semiconductor chip is disposed and a second surface opposing the first surface, an encapsulant disposed on the first surface of the connection member and encapsulating the semiconductor chip, a passivation layer on the second surface of the connection member; and an UBM layer partially embedded in the passivation layer, wherein the UBM layer includes an UBM via embedded in the passivation layer and connected to the redistribution layer of the connection member and an UBM pad connected to the UBM via and protruding from a surface of the passivation layer, and a width of a portion of the UBM via in contact with the UBM pad is narrower than a width of a portion of the UBM via in contact with the redistribution layer.