Abstract: Headrest (150) comprising a fixed part (111), a mobile part (112) opposite the fixed part, first (114) and second (115) connecting rods, each connecting rod comprising two branches, connecting the fixed part to the mobile part and two resilient devices acting on the first and second connecting rods to distance the mobile part from the fixed part. The first and second connecting rods respectively slide on the mobile and fixed parts and a third connecting rod (113) is provided to connect the fixed and mobile parts.

Abstract: A high chair includes a pair of laterally spaced apart support structures, with each support structure including an upper portion that defines an armrest and a lower portion that defines a pair of longitudinally spaced apart legs. The high chair also includes a backrest that extends between the rear portions of each support structure and may be connected to the support structures. The backrest includes an upper portion that is higher in height than the height of a front portion of the armrests. The high chair pivots forward about the front portions of the armrests and collapses to tipped position if it is placed in an upside down position such that it rests on the ground or any substantially horizontal surface.

Abstract: A seatbelt adaptor and a method to be used to improve of the setup of a child safety seat in a vehicle, the seatbelt adaptor comprising a central lengthening device and two connectors disposed at both ends of the central lengthening device. The connectors are suited for the buckles of the vehicle's seatbelts, and wherein the length of the seatbelt adaptor is suited to improve upon the latching of the buckle of the seatbelt that secures a child seated in a safety seat within a vehicle. The geometric shape of the safety seat conforms to the geometric shape of the seatbelt adaptor.

Abstract: A lubrication deflector for a vehicle wheel hub assembly is disclosed. The wheel hub assembly has an inner cavity which has a recessed region. The lubrication deflector is placed within the recessed cavity within the wheel hub to substantially close the recessed region.

Abstract: To provide a braking device for a vehicle, which is capable of switching properly between single braking for one of front and rear wheels and combined braking with CBS according to the driving conditions of the vehicle, and of thereby achieving the balance between active vehicle controllability based on a driver's intention and braking performance. Brake systems respectively for the front and rear wheels are provided so that brake caliper assemblies respectively for the front and rear wheels can be operated independently of each other with brake operating sections exclusively for the brake caliper assemblies for the front and rear wheels, respectively. The brake system for the front wheel is provided with a hydraulic pressure modulator capable of feeding a braking force to the brake caliper assembly for the front wheel. When a rear wheel slip ratio exceeds a threshold value under rear brake operation, a controller activates the hydraulic pressure modulator for the front wheel to start braking the front wheel.

Abstract: An endless rubber track belt is provided having an inner surface having inner lugs and an outer surface having outer lugs, wherein the pitch of the inner lugs and the pitch of the outer lugs are not a multiple of the index surface, and a mold apparatus is provided for forming an endless rubber track belt, the mold comprising a lower mold half and an upper mold half, wherein one of the mold halves translates relative to the other mold half.

Abstract: A vehicle includes a battery and an alternator as a power source, and a plurality of vehicle load groups that operate commonly receiving power supply from the power source. When a plurality of requests for actuating the plurality of loads are made simultaneously, a control circuit determines a request of higher priority and a request of lower priority based on a predetermined priority for each of said requests. The control circuit operates the corresponding load as requested in response to the request of high priority, and operates the corresponding load with the operation limited to consume smaller power than requested in response to the request of low priority. More preferably, one of the plurality of loads is variable valve timing apparatus changing a timing of opening/closing an intake valve or an exhaust valve of an internal combustion engine.

Abstract: An inverter apparatus in which a control power source connected to a microcomputer or a peripheral circuit included in at least one of an inverter main body, a built-in option, and a parameter unit is provided in the inverter main body. The apparatus has an external-power-unit connector via which an external power unit can be connected to at least one of the inverter main body, the built-in option, and the parameter unit. The external power unit connected to the external-power-unit connector is configured to function as a power source that controls the microcomputer or the peripheral circuit included in at least one of the inverter main body, the built-in option, and the parameter unit.

Abstract: A powered device (PD) designed to connect to an ethernet cable, which has an auxiliary power port capable of powering a load and switching on and off. In an access control application this auxiliary power port could be connected to an electric door strike. This would eliminate the need for a separate power supply for the door strike and thus, a simplified installation process. This invention would also allow the ethernet powered device (PD) to control and power the load, which would allow the power sourcing equipment (PSE) remote sensing of the power consumed, thus determining if the load is in failure mode. By allowing the powered device (PD) to source power for itself and to provide an auxiliary power output, the power sourcing equipment PSE can be used to detect faults in the load. The power sourcing equipment (PSE) can monitor the current consumed by the PD, and the system can detect if the PD is not drawing sufficient current when the auxiliary power port is activated.

Abstract: A power converting apparatus for a fuel cell, and a method thereof.

Abstract: An active diode includes a plurality of transistors and a built-in offset voltage. The built-in offset voltage size can be determined by sizing of at least one of the plurality of transistors to prevent supply current flow from one supply source into another supply source, thereby preventing current flow from a higher voltage source to a lower voltage source.

Abstract: A switch circuit includes a balanced line connected between one end of an unbalanced line having another end connected to an input terminal and an output terminal and a balanced line connected between the one end of the unbalanced line and an output terminal. On each of the balanced lines, a plurality of quarter-wave transmission lines are connected in cascade, and each of a plurality of FETs, whose impedance is controllable, is connected between one pair of transmission lines constituting a balanced line for each interconnection point between the transmission lines, so that the power of a signal is distributed to both of the pair of transmission lines, and therefore the inputted power becomes half on each-balanced line, thereby making it possible to prevent a DC-like current from flowing when the FET is in an off state even if a high frequency signal with high power is inputted.

Abstract: A power control circuit includes an electronic switch (20) interposed between a power unit (10) and an electronic device (30), a driving circuit (40) and a mechanical switch (50). The driving circuit receives a power-on signal from the mechanical switch, and signals the electronic switch to turn on and supply power to the electronic device in accordance with the power-on signal. The electronic device controls the driving circuit to maintain the electronic switch to be on and continue the power supply to the electronic device. The electronic device further receives a power-off signal from the mechanical switch, and signals the driving circuit to turn off the electronic switch and discontinues the power supply to the electronic device.

Abstract: A semiconductor integrated circuit has a bias generation circuit. The bias generation circuit is placed between a power supply voltage node and ground voltage node which are at a far end from a power supply voltage supply terminal and ground voltage supply terminal. Reference voltage nodes are connected to an amplifier circuit block from the far end. In an actual chip layout, the amplifier circuit block is placed closer to the power supply source, and the bias generation circuit is placed distant therefrom. Even if the power supply voltage drops due to current constantly flowing in the amplification circuit block and bias generation circuit, the bias generation circuit generates reference voltages at the reference voltage nodes based on the voltage-dropped power supply. Therefore, the voltage in the constant current source MOS transistor of the amplifier circuit block becomes lowest at the amplifier circuit which is closest to the bias generation circuit.

Abstract: An improvement in high-speed and response performances is achieved with simple structure. A bed faces a movable table on which permanent magnets divided from each other in a stroke direction of the movable table are provided. One or more armature coils are provided on the bed facing the permanent magnets. Upon passage of an electric-current through the armature coils, an electromagnetic interaction between the armature-coil current and magnetic fluxes of the permanent magnets produces a thrust force for relative movement between the two mobile units. A magnetic member is provided on the movable table in a position corresponding to a maximum point or a vicinity thereof of a magnetic force of the permanent magnets when the movable table is in a neutral position in the stroke direction. When the mobile units relatively move from the neutral position, the magnetic force of the permanent magnets acts on the magnetic member.

Abstract: A motor module, method, apparatus and system for implementing linear and rotary motors, such as relatively large rotary motors, are disclosed. In one embodiment, an electrodynamic machine can include magnets having angled magnetic surfaces and regions of predetermined magnetic polarization. The magnets can include a first array and a second array of magnets arranged in a direction of motion. Also included are groups of field pole members arranged adjacent to the first array and the second array of magnets. The field pole members include angled flux interaction surfaces, which can be formed at the ends of the field pole members to confront the angled magnetic surfaces. In combination, the angled flux interaction surfaces and the angled magnetic surfaces define air gaps. As such, the angled flux interaction surfaces are configured to magnetically couple the field pole members to the magnets to form either a linear or rotary motor.

Abstract: A stepping motor control method, comprising the step of magnetising at least one of a number of teeth within the stepping motor to move a rotor of the stepping motor into a position such that it contacts or maintains contact with a mechanical stop, wherein a first tooth is generally aligned with the mechanical stop and at least one of the teeth is magnetised such that a rotational force acts to urge the rotor in only a direction towards the mechanical stop, thereby resetting the position of the rotor.

Abstract: A method of manufacturing an apparatus, such as a motor or other rotating machine, having a cooling coil is provided. The exemplary method includes disposing a cooling coil within a casting mold and casting a component of the device such that the cooling coil is embedded within the component. A coolant is routed through the cooling coil during the casting process to reduce or prevent melting of the cooling coil and preserve a fluid conduit within the cooling coil. A device component and apparatus having a cooling coil are also provided.

Abstract: A self-cooled rotor for an electrical machine being internally provided with a cooling channel to carrying cooling fluid. The machine includes a further channel for carrying cooling fluid in proximity to a magnetic field generating means for cooling it, the two passages being connected to each other within the machine.

Abstract: A motor structure resistant to liquid intrusion features two modules, the first having an electronically commutated external-rotor motor (20), which motor comprises an internal stator (22) that is arranged on a bearing tube (30) and is separated by a first air gap (24) from an external rotor (26; 92), which latter comprises a rotor cup (40) that is open at one end and is joined at its other end to a shaft (46) that is journalled in the bearing tube (30), further having a permanent-magnet arrangement (76), arranged at the open end of the rotor cup (40), for magnetic interaction with a second permanent-magnet rotor (92), forming part of the second module. The first module is separated from that second rotor (92) by a second air gap and forms therewith a magnetic coupling (94), so that a rotation of the permanent-magnet arrangement (76) brings about a rotation of that second rotor (92).

Abstract: An electric fan includes a frame (10) having a central tube (12) extending therefrom, a bearing (30) received in the central tube, a stator (50) mounted around the central tube, and a rotor (70) being rotatably supported by the bearing. The frame defines an air inlet (19) and an air outlet (17) at two different sides thereof. The stator includes a stator core (52) having a central cylinder (520). A plurality of radial posts (522) extends from the central cylinder. A plurality of magnetic poles (524) is formed at free ends of the posts. A plurality of stator coils (54) is wound around the posts. Each magnetic pole includes a lower portion (700) adjacent to the air outlet and an upper portion (60) adjacent to the air inlet. The upper portions expand radially along a direction from the air inlet to the air outlet.

Abstract: A self-rotating enclosure (6) containing an electric motor (4) particularly suited for use in very low power and low speed applications, including a counter-torque producing magnet (34). The motor comprises magnets (M3,M4) which generate magnetic fields to interact with currents in coils of wire (C2,C3) to generate relative rotational motion between an armature assembly (2) and the motor case (4). A shutter (36) with a window (W1) controls light incident on photoresistor (P1) to energize a coil, (C2), and similarly other photoresistors control other coils to cooperatively generate relative rotation. The preferred embodiment uses photovoltaic cells (30) to provide the electric current.

Abstract: An improvement to a bridge rectifier assembly of the type used to convert alternating current produced by an motor vehicle alternator into direct current. The bridge rectifier assembly of this type comprises a heat sink, a plurality of pressfit diodes installed in the heat sink, and a plurality of terminals electrically connected to the motor vehicle alternator. The first end of a flexible conductor is mechanically and electrically connected to a conductive connector. The second end of the flexible conductor is mechanically and electrically connected to a lead of one of the plurality of pressfit diodes. The conductive connector is electrically connected to one of the plurality of terminals to complete an electrical connection between the one of the plurality of pressfit diodes and the one of the plurality of terminals.

Abstract: The invention relates to an oil-storing device used in bearing assembly in a kind of motor including a rotor of motor and a stator of motor; the rotor includes a rotation shaft housing holding a shaft, many impellers which are settled in radial direction at proper interval along outer circumference the rotation shaft housing, magnets which are settled on the back of the rotation shaft housing; the stator includes a frame, a circular bearing receptacle shaped inside the frame, a stator subassembly and a stator subassembly base; an oil-impregnated bearing is settled inside the circular bearing receptacle; it is characterized by a nether bearing part and an upper bearing part which is joined vis-à-vis in the orientation of the rotation shaft; a hole in the nether bearing part and the upper bearing part for the rotation shaft; a concave shaped in the interlayer of the upper part and nether part of the oil-impregnated bearing respectively; an oil-storing device which is formed by the joining of the concave of the

Abstract: A DC motor is provided with a yoke having a polygonal cylindrical shape and an inner wall surface provided with a plurality of consecutive flat surfaces, a plurality of permanent magnets each having a flat plate shape, being fixed on each flat surface on the inner wall surface of the yoke, and an armature arranged rotatably within the yoke. Each permanent magnet has a surface facing the armature. The surface has a rectangle shape provided with a symmetry center. Each permanent magnet is asymmetrical with respect to a line passing through the symmetry center and extending in an axial direction of the yoke. Accordingly, a dimension along the axial direction of the yoke in each permanent magnet decreases toward the outer side from a center part of the permanent magnet.

Abstract: A rotor configured to receive a cast internal conductive structure is disclosed. The rotor includes a rotor core having a plurality of rotor slots extending through the rotor core. The rotor also includes a plurality of slotted end members adjacent one another and axially aligned with the rotor core. One end member is radially positioned such that the slots of the end member are offset with respect to another end member. A rotating machine having such a rotor and a method of manufacture are also disclosed.

Abstract: Two new High Slot Utilization (HSU) Systems for electric machines enable the use of form wound coils that have the highest fill factor and the best use of magnetic materials. The epoxy/resin/curing treatment ensures the mechanical strength of the assembly of teeth, core, and coils. In addition, the first HSU system allows the coil layers to be moved inside the slots for the assembly purpose. The second system uses the slided-in teeth instead of the plugged-in teeth. The power density of the electric machine that uses either system can reach its highest limit.

Abstract: A claw pole type rotating electric machine comprising first and second claw cores which are disposed on a ring shaped ring yoke portion and a plurality of claw magnetic poles which extend in the axial direction are provided, and stator cores are formed by meshing of the claw magnetic poles with each other, and the stator is formed by holding the ring coils on the outer circumference side of the claw magnetic poles, wherein the first and second claw cores are formed by powder cores, the radial direction thickness of the claw magnetic pole is 2 mm or more, a flat surface is formed perpendicular to the axial direction at the end extending in the axial direction of the claw magnetic pole, a ejection taper in the circumference direction of the claw magnetic pole is formed in the range of 10 degrees or less, and the ratio of the axial direction length of the claw magnetic pole and the axial direction thickness of the ring yoke portion is no more than 5:1.

Abstract: A surface acoustic wave device includes a piezoelectric substrate, a surface acoustic wave element composed of electrodes provided on the piezoelectric substrate and the piezoelectric substrate, a first seal resin portion provided on the piezoelectric substrate and having a cavity on the surface acoustic wave element, and an inorganic insulation film provided in contact with a surface of the piezoelectric substrate to surround the surface acoustic wave element.

Abstract: The invention is intended to provide a high-capacity ultrasonic composite oscillating device that is sufficiently rigid as a composite oscillating body for various strong ultrasonic applications. One constructed such that BLTs (1, 1?, 2, 2?, . . . n, n?) of the same characteristics are disposed around an outer peripheral portion of a disk-shaped oscillating body 4 in n-sets opposed to each other and disposed at regular intervals, opposed BLTs being driven in an opposite phase mode, and driven in an oscillating mode in which the phase between the BLTs in adjacent sets is shifted by ?/n, and an oscillating rod connected to a center of the disk-shaped oscillating body is induced with a composite oscillation output of oscillation capacity n-times that of one set of BLTs induced in the center of the disk-shaped oscillating body 4, and one in which a plurality of these oscillating devices are jointed together to increase the oscillation capacity.

Abstract: There is provided a drive unit which has high adhesive strength of its components and generates large drive power. The drive unit includes an electromechanical transducer, a driving friction member connected to an end surface of the electromechanical transducer and an engaging member engaging frictionally with the driving friction member. At least one end portion of the electromechanical transducer has a reduced cross-sectional area relative to a middle portion thereof.

Abstract: An actuator comprises: an electromechanical conversion element; a driving frictional member mounted onto one side in an extension/contraction direction of the electromechanical conversion element, the driving frictional member being frictionally engaged with a driven member; and a weight member mounted onto the other side in the extension/contraction direction of the electromechanical conversion element, wherein at least a part of the weight member is disposed at the one side from an end face of the other side of the electromechanical conversion element.

Abstract: A driving mechanism comprises: (i) an actuator comprising: an electro-mechanical conversion element; and a driving member which moves according to elongation and contraction of the electro-mechanical conversion element; (ii) a driven member frictionally engaged with the driving member; and (iii) a case, wherein the actuator allows the driven member to move along the driving member, and the actuator is supported by the case laterally in elongating and contracting directions of the electro-mechanical conversion element.

Abstract: A resonator comprises a base portion and a plurality of vibrational arms connected to the base portion and vibratable in a flexural mode. An electrode is disposed on at least one of opposite side surfaces of each of the vibrational arms so that a capacitance ratio r1 of a fundamental mode of vibration of the resonator is less than a capacitance ratio r2 of a second overtone mode of vibration thereof. A groove is formed in at least one of opposite main surfaces of each of the vibrational arms, and at least one mounting arm protrudes from the base portion.

Abstract: A cover mechanism for protecting a data storage device with a tray installed in an electronic device, includes a bezel defining an opening for the tray passing therethrough, a first cover movably connected to the bezel, an elastic member mounted between one of the first and second covers and the bezel, and a second cover movably connected to the bezel. The first cover comprises a first body covering one part of the opening of the bezel. The second cover comprises a body covering the other part of the opening of the bezel. Wherein the first cover and the second cover is capable of cooperating to move away from each other when the tray of the data storage device extends out of the opening, and moving toward each other via rebounding of the elastic member for covering the opening of the bezel.

Abstract: A computer case retention structure includes a cover and a base. The base has a bottom plate and a guided way with a protruding hook. The cover has at least one side plate, a first and second elastic blades are disposed on the side plate. A protrusion is extended downward from a tip of the second elastic blade to slide against the guided way. For fixing the cover onto the base, the protrusion slides over the protruding hook and then stopped by the protruding hook, so that the cover is fixed onto the base without being moved relative to the base. For removing the cover, a release element disposed on the first elastic blade is pressed to bend the first and second elastic blades, separating the protrusion from the guided way. Then the cover can be removed from the base without the protrusion being stopped.

Abstract: A front face for an appliance that is one of a washing machine and a clothes dryer includes a door panel having a transparent window defined thereon, a door handle including a handle body having an inner surface, an outer surface, and two end portions. The handle is coupled to the door panel and is configured such that a portion of the handle does not contact the door panel and defines an opening between the inner surface of the handle body and the door panel.

Abstract: A liner for an appliance is formed by a plastic sheet formed into a three dimensional shape corresponding to at least a portion of a compartment of the appliance.

Abstract: The electric lamp comprises a lamp vessel (1) which is transparent to visible light and which accommodates a light source (2). The lamp vessel (1) is covered with a combination of a light-absorbing medium (6) and an optical interference film (5) comprising layers of alternately a first layer of a material with a comparatively high refractive index and a second layer of silicon dioxide. According to the invention the maximum reflection Rmax of the interference film (5; 15) lies in the range from 0.50?Rmax?0.90 and in that the variation in the reflection R of the interference film (5; 15) in the wavelength range from 400???690 nm ranges from 0.0 to Rmax in order to obtain an overall color neutral appearance. In operation, the electric lamp according to the invention emits colored light in the transmission mode and has a substantially color-neutral appearance in the off state.

Abstract: A sulfur lamp, is provided, including a power supply that supplies electrical power, a transparent bulb having a space inside that contains sulfur and a plurality of electrodes. Additionally, a portion of each electrode may be inserted into the space and an end of each electrode may be connected to the power supply such that the sulfur is excited by an electric discharge thereby emitting light. A portion of the electrode inserted into the space may be coated with a protective layer to prevent a chemical reaction of between the electrode and the sulfur. Further, the changing of the sulfur (contained in the space of the bulb) into a plasma phase may be accomplished by utilizing the electrodes (not microwaves). Therefore, a need to utilize a magnetron (which is low in energy transfer rate) may be eliminated, thereby increasing a system efficacy and saving a cost of replacing the magnetron.

Abstract: Disclosed is an organic electroluminescent device including: a panel; a partition that defines a plurality of hollows arranged in an anisotropic form in a plan view on the panel; a luminescent portion formed by individually coating a coating solution containing an electroluminescent material on each of the plurality of hollows and drying out the coating liquid coated on the hollows; and a drain means that is formed in the partition to drain part of the coating liquid coated on the hollow so that a surface of the luminescent portion can be flattened.

Abstract: A field emission device (10) includes a base (12), a conductive paste (16), and at least one carbon nanotube yarn (14). The at least one carbon nanotube yarn is attached to the base using the conductive paste. This avoids separation of the at least one carbon nanotube yarn from the base by electric field force in a strong electric field. A method for making the field emission device includes the steps of: (a) providing a base; (b) attaching at least one carbon nanotube yarn to the base using conductive paste; and (c) sintering the conductive paste to obtain the field emission device with the carbon nanotube yarn firmly attached to the base.

Abstract: A white light emitting lighting system, comprising a blue or UV light emitting diode and a coating comprising a yellow luminescent phosphor having a peak emission wavelength greater than 550 nm, wherein the phosphor comprises a Sr2-X-Y-ZCayBazSiO4:Eux phosphor, and wherein 0<=0.06 and 0<(3y+z)<=0.5. If the diode is a UV light emitting diode the coating further comprises a blue luminescent phosphor.

Abstract: The invention relates to a discharge lamp having dielectrically coated electrodes, in which the electrodes 4-7 as a pair have a path form with curves, in which the electrodes 4-7 remain essentially uniformly spaced apart.

Abstract: An anode structure (110) for a field emission display (100) includes a front substrate (111), an anode electrode (112) formed on the front substrate, a phosphor layer (113) formed on the anode electrode and a getter material (114). The phosphor layer has a plurality of separated phosphor strips (1131, 1132, 1133) each configured for emitting light of a respective single color. The getter material is arranged between adjacent phosphor strips thereof.

Abstract: A method of making an electron emission display device having an electron emission unit and a light emission unit, wherein forming the light emission unit includes forming a black layer pattern on a substrate, printing a first phosphor pattern using a first phosphor paste, printing a second phosphor pattern using a second phosphor paste, and printing a third phosphor pattern using a third phosphor paste, wherein the each of the first, second and third phosphor pastes includes, respectively, first, second and third phosphor materials that are surface-treated with a same surface treatment.

Abstract: An electron emission display includes first and second substrates facing each other. First electrodes are arranged on the first substrate along a first direction. Second electrodes are arranged along a second direction such that the second electrodes cross the first electrodes. Sub-pixels are formed at crossed regions of the first and second electrodes, and electron emission regions are provided on the first electrodes within the sub-pixels. Phosphor layers are formed on a surface of the second substrate such that the phosphor layers are spaced apart from each other with a distance therebetween. A metallic reflection layer is formed on the second substrate to cover the phosphor layers. The metallic reflection layer has spaced portions covering at least two of the phosphor layers and spaced away from the phosphor layers with an open gap therebetween, and contact portions not spaced away from the second substrate with an open gap therebetween.

Abstract: The objects of the present invention are to provide a self-emission panel capable of achieving low electrical resistance of upper electrodes by a simple configuration, and to provide a method of fabricating a self-emission panel capable of achieving low electrical resistance of upper electrodes by a simple process. A self-emission panel includes one or more self-emission elements, each of the self-emission elements has a first electrode (lower electrode) formed on a substrate directly or through other layers, a deposition layer (luminescent functional layer) including a luminescent layer formed on the first electrode (lower electrode), and a second electrode (upper electrode) formed on the deposition layer. A sealing member for sealing the self-emission elements has an opposing substrate with protrusions formed toward the substrate on the side facing the substrate.

Abstract: An electronic device includes a substrate, a first layer, a first pixel, and a patterned reactive surface-active layer. The first pixel includes a first pixel driving circuit that overlies the substrate and includes a first electronic component. The first electronic component includes a first electrode and a second layer. The first electrode overlies at least a part of the first pixel driving circuit. The patterned reactive surface-active layer has a lower surface energy than the first layer. A process for forming an electronic device includes forming a first pixel driving circuit over a substrate, forming a first electrode of a first electronic component over the substrate, forming a first layer, forming a patterned reactive surface-active layer, and forming a second layer over the first electrode of the first electronic component.

Abstract: To improve color reproduction areas in a display device having light-emitting elements. A display region has a plurality of picture elements. Each picture element includes: first and second pixels each including a light-emitting element which has a chromaticity whose x-coordinate in a CIE-XY chromaticity diagram is 0.50 or more; third and fourth pixels each including a light-emitting element which has a chromaticity whose y-coordinate in the diagram is 0.55 or more; and fifth and sixth pixels each including a light-emitting element which has a chromaticity whose x-coordinate and y-coordinate in the diagram are 0.20 or less and 0.25 or less, respectively. The light-emitting elements in the first and second pixels have different emission spectrums from each other; the light-emitting elements in the third and fourth pixels have different emission spectrums from each other; and the light-emitting elements in the fifth and sixth pixels have different emission spectrums from each other.