WO2006006206A1 - High voltage circuit, display and display unit - Google Patents

High voltage circuit, display and display unit Download PDF

Info

Publication number
WO2006006206A1
WO2006006206A1 PCT/JP2004/009719 JP2004009719W WO2006006206A1 WO 2006006206 A1 WO2006006206 A1 WO 2006006206A1 JP 2004009719 W JP2004009719 W JP 2004009719W WO 2006006206 A1 WO2006006206 A1 WO 2006006206A1
Authority
WO
WIPO (PCT)
Prior art keywords
high voltage
connector
wiring
inverter
voltage element
Prior art date
Application number
PCT/JP2004/009719
Other languages
French (fr)
Japanese (ja)
Inventor
Eiichi Mori
Original Assignee
Fujitsu Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2004/009719 priority Critical patent/WO2006006206A1/en
Priority to JP2006527647A priority patent/JP4575381B2/en
Publication of WO2006006206A1 publication Critical patent/WO2006006206A1/en

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/18Printed circuits structurally associated with non-printed electric components
    • H05K1/181Printed circuits structurally associated with non-printed electric components associated with surface mounted components
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0213Electrical arrangements not otherwise provided for
    • H05K1/0216Reduction of cross-talk, noise or electromagnetic interference
    • H05K1/023Reduction of cross-talk, noise or electromagnetic interference using auxiliary mounted passive components or auxiliary substances
    • H05K1/0231Capacitors or dielectric substances
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0213Electrical arrangements not otherwise provided for
    • H05K1/0254High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007Types of components
    • H05K2201/1003Non-printed inductor
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007Types of components
    • H05K2201/10189Non-printed connector
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10431Details of mounted components
    • H05K2201/10439Position of a single component
    • H05K2201/10462Flat component oriented parallel to the PCB surface
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10431Details of mounted components
    • H05K2201/10507Involving several components
    • H05K2201/1053Mounted components directly electrically connected to each other, i.e. not via the PCB
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10621Components characterised by their electrical contacts
    • H05K2201/10636Leadless chip, e.g. chip capacitor or resistor
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10621Components characterised by their electrical contacts
    • H05K2201/10651Component having two leads, e.g. resistor, capacitor
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10742Details of leads
    • H05K2201/1075Shape details
    • H05K2201/10757Bent leads
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10742Details of leads
    • H05K2201/10886Other details
    • H05K2201/10939Lead of component used as a connector
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/30Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/341Surface mounted components
    • H05K3/3421Leaded components
    • H05K3/3426Leaded components characterised by the leads
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a high voltage circuit, a display device, and a display unit having an inverter for driving light emission of a cold cathode tube used for a backlight of a liquid crystal display, and in particular, an output connector for supplying a high voltage to a load.
  • the present invention relates to a high-voltage circuit, a display device, and a display unit having a structure that reliably prevents a failure at a part.
  • a flat display unit such as a liquid crystal display has a cold cathode tube as a light source for a backlight, and a DC / AC power source known as an inverter that generates a high voltage to light the cold cathode tube.
  • the circuit is used.
  • Such an inverter receives a DC power supply as an input power supply, operates an oscillation circuit to generate an AC waveform output of a small signal, and boosts the AC waveform output using a high voltage generating element such as a transformer. As a result, a high voltage output of 800-1500 Vrms max is generated and output to the cold cathode tube as the load.
  • FIG. 1A shows the output side of a conventional inverter.
  • a transformer 102 as a high voltage generating element is mounted on a substrate 100, and the high voltage output terminal 104 of the transformer 102 is on the substrate 100.
  • Solder connected to the wiring pattern 106.
  • the high voltage side input terminal 110 of the connector 108 is connected to the opposite side of the wiring pattern 106, and the cold cathode fluorescent lamp side connector plug is inserted into the connector 108.
  • the high voltage output section has sufficient insulation space between the positive and negative lead terminals and the wiring pattern.
  • These circuit components are mounted on the board 100.
  • the solder connection of the high voltage output terminal 104 of the transformer 102 is peeled off and floated from the board 100 as shown in Fig. 1 (B). Therefore, when a minute discharge occurs and this state continues for a long time, Problems such as smoke and fire may occur.
  • FIG. 2 shows a structure for improving the reliability of a high voltage output section having the possibility of such a problem (Japanese Patent Application No. 10-231241).
  • FIG. 2 shows a case where a piezoelectric transformer is used for the high voltage generating element, and an insulating case 202 and a connector 204 for fixing the piezoelectric transformer element 200 are integrated.
  • This integrated structure provides excellent insulation from the surrounding space, but this structure is not applicable when a wire transformer is used as the high-voltage generating element.
  • the insulation case 202 and the connector 204 are an integral type.
  • the high voltage side input terminal 206 of the connector 204 is soldered to the high voltage output terminal 208 of the piezoelectric transformer element 200, and the solder connection part is in contact with the inside of the insulation case 202. If there is a contact failure, a minute discharge may occur, and if it lasts for a long time, it may cause problems such as smoke and fire.
  • FIG. 3 shows another structure of the high voltage output unit in the conventional inverter.
  • the high voltage transformer unit 302 is covered with an insulator 300, and the insulator 300 and the connector 304 are integrally formed.
  • the high voltage transformer unit 302 and the connector 304 are integrated.
  • the connection leads 306 and 308 are also covered with an insulator so that the insulation reliability of the high voltage portion and its vicinity can be improved.
  • Patent Document 1 JP 2000-165062A
  • a capacitor for detecting the output waveform may be placed on the high voltage output side.
  • a capacitor cannot be disposed between the high voltage output terminal of the high voltage transformer section 302 and the connector 304. For this reason, the capacitor must be disposed beside the integrated connector 304, and the width of the substrate 310 is increased by that amount, and the degree of freedom in arranging the connector is lost.
  • the insulator 300 is made of a heat resistant material. Must be used.
  • the connector 304 is a component that does not naturally generate heat. If the connector 304 is formed as an integral structure, a heat-resistant material is used even for the connector 304 that does not necessarily have heat resistance. There is a problem that spends.
  • An object of the present invention is to provide a high voltage circuit, a display device, and a display unit that improve the reliability and safety by eliminating the occurrence of problems in the high voltage output section of the inverter. Means for solving the problem
  • the present invention provides a high voltage circuit that drives by supplying a high voltage to a load. That is, the present invention provides a high-voltage circuit comprising a high-voltage element that outputs a high voltage provided on a wiring board and an external connection connector that supplies high voltage to the outside. Is directly wired, and the wiring is held in the air between the high voltage element and the external connection.
  • the high voltage element is an inverter that supplies a high voltage to the cold cathode tube and drives to emit light.
  • a high voltage element is mounted between the wiring and the wiring board. Also, the wiring and the high voltage element are electrically connected. Also, the wiring and the high voltage element are directly connected. Furthermore, the wiring and the high voltage element are connected via the wiring board.
  • the high voltage element constitutes a circuit that monitors the high voltage output of the high voltage element.
  • the external connector is mounted at the position of the wiring board whose tip is bent in an L shape.
  • the present invention provides a display device. That is, the present invention relates to a display device having a high voltage circuit provided on a wiring board and including a high voltage element that outputs a high voltage and an external connection connector that supplies the high voltage to the outside. The connectors are directly wired, and the wires are held in the air between the high voltage element and the external connection.
  • the present invention provides a display unit. That is, the present invention relates to a display unit having a high voltage element provided on a wiring board and outputting a high voltage and a high voltage circuit comprising an external connector for supplying a high voltage to the outside.
  • the external connection connectors are directly wired, and the wiring is maintained in the air between the high voltage element and the external connection.
  • the details of the display device and display unit of the present invention are basically the same as those of the high voltage circuit of the present invention.
  • the high voltage output terminal of the transformer is integrated with the connection terminal of the connector for load connection, so that the high voltage output of the transformer
  • the terminal can be connected directly to the high-voltage side input terminal without going through the wiring pattern on the board, and the high-voltage route is broken due to peeling of the solder connection due to warping due to external force applied to the board. Can be reliably prevented, and the reliability and safety of the high voltage output section can be improved.
  • FIG. 1 is an explanatory diagram of a high voltage output unit in a conventional inverter
  • FIG. 2 An explanatory diagram of a conventional piezoelectric transformer in which a piezoelectric transformer element and an output connector are integrated;
  • FIG. 3 An explanatory diagram of a conventional inverter in which a transformer and an output connector are integrated;
  • FIG. 4 is an explanatory view of the plane and side of the inverter according to the present invention.
  • FIG. 5 is an explanatory diagram of an embodiment of an inverter according to the present invention in which the high voltage output section of FIG. 4 is taken out.
  • FIG. 6 is a circuit block diagram of an inverter according to the present invention.
  • FIG. 7 is a circuit diagram of an inverter according to the present invention.
  • FIG. 8 An explanatory diagram of another embodiment of the inverter according to the present invention from which the high voltage output section of FIG. 4 is taken out;
  • FIG. 9 An explanatory view of a plane and a side surface of the inverter according to the present invention in which the front end of the substrate is L-shaped; [FIG.
  • FIG. 11 is an explanatory diagram of another embodiment of the inverter according to the present invention, in which the high voltage output section of FIG. 9 is taken out;
  • FIG. 12 is an explanatory diagram of the circuit component of the present invention used in the inverter of FIG. 5;
  • FIG. 13 is an explanatory diagram of the circuit component of the present invention used in the inverter of FIG. 10;
  • FIG. 4 is an explanatory diagram of an inverter constituting the high voltage circuit of the present invention.
  • Fig. 4 (A) shows a plan view
  • Fig. 4 (B) shows a side view.
  • an inverter 10 according to the present invention uses a horizontally long substrate 12 having a width of about 10 mm and a length of about 100 mm. Since the inverter 10 of the present invention is incorporated in a frame portion of a liquid crystal display used in a personal computer or a notebook computer, the inverter 10 has a narrow and narrow substrate shape.
  • an input connector 14 On the board 12, an input connector 14, an inverter circuit section 16, a transformer 18 having a primary winding and a secondary winding, and an output connector 20 are mounted from the left side.
  • the high voltage output section in the inverter 10 is composed of a transformer 18 and an output connector 20.
  • the connector terminal of the Nectar 20 is an integral structure.
  • a storage space for circuit components is formed between the transformer 18 and the output connector 20, and in this embodiment, the space is mounted by a capacitor 26.
  • FIG. 5 is an explanatory diagram of an embodiment of the inverter 10 according to the present invention from which the high voltage output unit of FIG. 4 is taken out.
  • FIG. 5 (A) is a perspective view, and FIG. A cross-sectional side view is shown.
  • a pair of high voltage output terminals 2 2-1, 24-1 are located in a hollow position away from the transformer 12 mounted on the substrate 12 substantially parallel to the substrate 12. Being taken out
  • the high voltage output terminal 22-1 is on the plus side, and the high voltage output terminal 24-1 is on the minus side.
  • the high-voltage output terminals 22-1 and 24-1 taken out from the transformer 18 are integrated with the connector case 28 of the output connector 20 arranged on the front end side of the substrate 12 via the storage space for circuit components. Present as connector terminals 22-2 and 24-2 in the opening
  • the high voltage output terminals 22-1 and 24-1 of the transformer 18 and the connector terminals 22-2 and 24-2 of the output connector 20 have an integral structure.
  • there is a capacitor at the position of the substrate 12 that is a storage space for electrical components between the transformer 18 and the output connector 20. 26 is implemented.
  • Capacitor 26 is a surface mount type capacitor having electrodes 30 and 32 at both ends. High voltage output terminal 22-1 on the positive side of transformer 18 is connected to electrode 30, and electrode 32 is connected to the wiring pad. It is connected to the inverter circuit part 16 side in FIG.
  • the board terminal 22-3 is formed in the body toward the board side.
  • the board terminal 22-3 side is connected to the land 34, whereby the electrode 30 of the capacitor 26 is connected to the high voltage output terminal 22-1 on the plus side.
  • FIG. 6 is a circuit block diagram of the inverter 10 of the present invention.
  • the inverter 10 of the present invention includes an input circuit section 38, an oscillation circuit section 40, and a boost circuit section 42 following the input connector 14, and supplies the output of the boost circuit section 42 to the output connector 20. ing.
  • the DC power input from the input connector 14 is supplied from the input circuit unit 38 to the oscillation circuit unit 40, and the oscillation circuit unit 40 generates a low-power AC waveform output having a specific frequency in the range of, for example, 50 KHz- ⁇ .
  • This low-power AC waveform output is input to the booster circuit unit 42 including the transformer 18 shown in FIG. 5 and boosted to a high voltage between 800 and 1500 Vrms max, for example, and then output connector 20 To the cold cathode tube as a load from the output connector 20 to drive the cold cathode tube to emit light.
  • FIG. 7 is a circuit diagram showing a specific example of the inverter circuit section 16 in the inverter 10 of the present invention.
  • an input connector 14 is provided on the input side of the inverter circuit section 16, and a transformer 18 and an output connector 20 are provided on the output side.
  • the transformer 18 has a primary winding 18-1 and a secondary winding 18-2, and the secondary winding 18-2 is connected to the output connector 20.
  • the inverter circuit section 16 includes a control IC 44, transistors Q1 and Q4, resistors R1 and R18, capacitors CI and C3 and C22, and diodes Dl and D2.
  • the capacitor 26 is temporarily connected to the positive high voltage output line 25 of the transformer 18, and the other end of the capacitor 26 is connected to the control IC 44 via the capacitor C 3.
  • the control IC 44 detects and monitors the high voltage output voltage output from the transformer 18 via the capacitor 26, and needs to stop the oscillation operation when the output voltage is cut off, for example. Control.
  • the choke coil that is conventionally necessary for the inverter is not provided, and the choke coil is obtained by using the leakage magnetic flux of the transformer 18. As a result, the inverter circuit section 16 is reduced in size.
  • the inverter circuit unit 16 used in the inverter 10 of the present invention uses a transformer 18 having a primary winding 18-1 and a secondary winding 18-2 as a high-voltage generating element. If so, an appropriate inverter circuit can be used.
  • the inverter circuit unit 16 used in the present invention needs to have a circuit configuration for detecting the output voltage from the high-voltage output line 25 on the plus side of the transformer 18 via the capacitor 26.
  • the high voltage output terminals 22-1 and 24-1 taken out from the transformer 18 are not changed in the output connector 20 as they are.
  • the connector terminals 22-2 and 24-2 do not require solder connection to the wiring pattern on the board 12 of the high voltage output terminals 22-1, 24-1 from the transformer 18.
  • the high voltage output terminals 22-1, 24-1 taken out from the transformer 18 are taken out to a hollow position away from the substrate 12 in the height direction, and a connector case 2 8 formed of an insulating material. As a result, it is possible to ensure sufficient insulation against the wiring pattern on the substrate 12, and to ensure sufficient reliability and safety even at high voltages.
  • FIG. 8 is an explanatory diagram of another embodiment of the inverter 10 according to the present invention, in which the high voltage output unit of FIG. 4 is taken out.
  • the high-voltage output terminal 22-1 is electrically connected by the solder connection 46.
  • the substrate is placed in the middle of the positive high-voltage output terminal 22-1. Since it is not necessary to provide the terminals 22-3, the structure can be simplified. Since the electrode 30 of the capacitor 26 is connected to the positive high voltage output terminal 22-1 on the upper side and the solder connection portion 46, the capacitor 26 is fixed to the substrate 12 when the electrode 30 is soldered to the land 34. Has been done to.
  • FIG. 9 is an explanatory view of the plane and side of the inverter according to the present invention in which the front end side of the substrate is L-shaped.
  • the substrate 12 is bent into an output end leading force-shaped shape to form an L-shaped end portion 48, and an L-shaped end portion 48 is formed.
  • the output connector 20 is arranged at.
  • the high voltage output terminals 50-1 and 52-1 taken out from the transformer 18 are bent in a direction orthogonal to the output connector 20 disposed at the L-shaped end 48, and then integrated with the connector 20. That connector terminal.
  • That connector terminal As is apparent from the side of FIG.
  • a capacitor 26 is mounted on the substrate 12 located under the high voltage output terminals 50-1 and 52-1 between the transformer 18 and the output connector 20. Yes.
  • the substrate 12 having the L-shaped end portion 48 is advantageous when the inverter 10 is incorporated in the corner portion of the frame of the liquid crystal display.
  • FIG. 10 is an explanatory diagram of an embodiment of the inverter of the present invention from which the high voltage output unit of FIG. 9 is taken out.
  • the high-voltage output terminals 50-1 and 52-1 taken out from the transformer 18 are bent 90 degrees on the tip side, and the connector case 28 of the output connector 20 located at the L-shaped end 48.
  • the connector terminals 50-2 and 52-2 are integrated in the connector and open at the tip end.
  • a capacitor 26 is mounted on the substrate 12 between the transformer 18 and the output connector 20.
  • the capacitor 26 is a surface-mount type capacitor having electrodes 30 and 32 at both ends.
  • the capacitor 26 is fixed to the lands 34 and 35 on the substrate 12 by soldering, and is connected to the positive high voltage output terminal 50.
  • the connection between —1 and electrode 30 of capacitor 26 is made directly at solder connection 56.
  • connection state of the high-voltage output terminal 50-1 on the positive side by the solder connection portion 56 to the capacitor 26 can be seen from the side view of FIG. 10 (B).
  • FIG. 11 is an explanatory diagram of another embodiment of the inverter according to the present invention from which the high voltage output unit of FIG. 9 is taken out.
  • the positive side of the transformer 18 A U-shaped bent board terminal 54 is formed on the board 12 in the middle of the voltage output terminal 50—1, the board terminal 54 is connected to the land 38, and the electrode 30 of the capacitor 26 is soldered to the land 38. It is connected to the land 34 with a wiring pattern.
  • FIG. 12 is an explanatory diagram of the circuit component of the present invention used in the inverter of FIG.
  • the circuit component 60 of the present invention has a transformer 18 and an output connector 20 as an integral structure.
  • the high voltage output terminals 22-1 and 24-1 taken from the output side of the transformer 18 are inserted and fixed in the connector case 28 of the output connector 20, and the ends thereof are connected to the connector terminals 22-2 and 2 4-2. It is integrated with.
  • a substrate terminal 22-3 for solder connection to the substrate 12 is formed in the middle of the high voltage output terminal 22-1 on the positive side toward the lower side. ing.
  • An input terminal 62 is provided on the input side of the transformer 18.
  • the circuit component 60 of FIG. 12 having such a structure as one component and mounting the circuit component 60 on the substrate 12 as shown in FIG. 5, the high voltage in the inverter 10 of the present invention is obtained.
  • the output part can be easily attached.
  • FIG. 13 is an explanatory diagram of the circuit component 60 of the present invention used in the inverter of FIG.
  • the high voltage output terminals 50-1, 52-1 taken out from the transformer 18 are bent in the direction perpendicular to the middle, and the tip thereof is connected to the connector case 28 of the output connector 20.
  • the connector terminals 50-2 and 52-2 are installed in one piece.
  • circuit component 60 of FIG. 12 is the case of the inverter of FIG. 5 and the circuit component 60 of FIG. 13 is an example of the inverter of FIG. 10, but the inverter of the embodiment of FIG.
  • the integrated structure of the transformer 18 and the output connector 20 can also be provided as a single circuit component for the inverter of the embodiment of FIG.
  • a pin member having a circular cross section is used as a member having an integrated structure of the high voltage output terminal from the transformer 18 and the connector terminal of the output connector.
  • the plate member may be a plate member having a rectangular cross section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Inverter Devices (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

A high voltage circuit comprising an inverter for driving emission of light by supplying a high voltage to a cold cathode tube. The high voltage output terminal of a high voltage generating element in the inverter and the connector terminal of a connector unit for connecting a load have an integrated structure. More specifically, the inverter has a pair of high voltage output terminals extending to a hollow position so that they are apart from and generally parallel to a substrate on the output side of the high voltage generating element which is mounted on the substrate and outputs a high voltage. The connector unit is mounted on the substrate through a space for arranging a capacitor on the output side of the high voltage generating element, and the forward end of the high voltage output terminal is integrated as a connector terminal in a connector case.

Description

明 細 書  Specification
高電圧回路、表示装置及び表示ユニット  High voltage circuit, display device and display unit
技術分野  Technical field
[0001] 本発明は、液晶ディスプレイのバックライトに使用される冷陰極管を発光駆動するィ ンバータを備えた高電圧回路、表示装置及び表示ユニットに関し、特に、高電圧を 負荷に供給する出力コネクタ部分での故障を確実に防止する構造を備えた高電圧 回路、表示装置及び表示ユニットに関する。  TECHNICAL FIELD [0001] The present invention relates to a high voltage circuit, a display device, and a display unit having an inverter for driving light emission of a cold cathode tube used for a backlight of a liquid crystal display, and in particular, an output connector for supplying a high voltage to a load. The present invention relates to a high-voltage circuit, a display device, and a display unit having a structure that reliably prevents a failure at a part.
背景技術  Background art
[0002] 従来、液晶ディスプレイのような平面な表示ユニットはバックライト用の光源として冷 陰極管を備えており、冷陰極管を点灯させるために高圧を発生するインバータとして 知られた DC/AC電源回路を使用している。  Conventionally, a flat display unit such as a liquid crystal display has a cold cathode tube as a light source for a backlight, and a DC / AC power source known as an inverter that generates a high voltage to light the cold cathode tube. The circuit is used.
[0003] このようなインバータは、入力電源として DC電源の供給を受け、発振回路を動作し て小信号の AC波形出力を生成し、 AC波形出力をトランス等の高電圧発生素子を 使って昇圧して 800— 1500Vrms maxといった高電圧出力を生成し、それを負荷で ある冷陰極管に出力している。  [0003] Such an inverter receives a DC power supply as an input power supply, operates an oscillation circuit to generate an AC waveform output of a small signal, and boosts the AC waveform output using a high voltage generating element such as a transformer. As a result, a high voltage output of 800-1500 Vrms max is generated and output to the cold cathode tube as the load.
[0004] 図 1 (A)は従来のインバータの出力側を示しており、基板 100に高電圧発生素子と してのトランス 102が実装され、トランス 102の高電圧出力端子 104は基板 100上の 配線パターン 106に半田接続される。配線パターン 106の反対側にはコネクタ 108 における高圧側入力端子 110が接続され、コネクタ 108に冷陰極管側のコネクタブラ グを差し込むようになる。  FIG. 1A shows the output side of a conventional inverter. A transformer 102 as a high voltage generating element is mounted on a substrate 100, and the high voltage output terminal 104 of the transformer 102 is on the substrate 100. Solder connected to the wiring pattern 106. The high voltage side input terminal 110 of the connector 108 is connected to the opposite side of the wiring pattern 106, and the cold cathode fluorescent lamp side connector plug is inserted into the connector 108.
[0005] このようなインバータにあっては、信頼度を確保するために高電圧出力部はプラス 側とマイナス側のリード端子や配線パターンの間に十分な絶縁空間を取るなどしてい るが、これらの回路部品は基板 100に実装されており、トランス 102の高電圧出力端 子 104力 基板 100の配線パターン 116を通ってコネクタ 108の高圧側入力端子 10 6に至る高圧ルートにおいて、基板 100に外力力 Sかかって反る等の異常な状況が生 じたときに、図 1 (B)のように、トランス 102の高電圧出力端子 104の半田接続が剥が れて基板 100から浮いてしまい、そこで微小な放電が生じ、この状態が長時間続くと 発煙や発火に至るような不具合が生じることがある。 [0005] In such an inverter, in order to ensure reliability, the high voltage output section has sufficient insulation space between the positive and negative lead terminals and the wiring pattern. These circuit components are mounted on the board 100. In the high-voltage route from the transformer 102 to the high-voltage output terminal 104 force through the wiring pattern 116 of the board 100 to the high-voltage side input terminal 106 of the connector 108, When an abnormal situation such as warping due to external force S occurs, the solder connection of the high voltage output terminal 104 of the transformer 102 is peeled off and floated from the board 100 as shown in Fig. 1 (B). Therefore, when a minute discharge occurs and this state continues for a long time, Problems such as smoke and fire may occur.
[0006] こうした不具合の可能性をもつ高電圧出力部の信頼性を向上させるものとして図 2 に示す構造がある(特願平 10-231241号公報)。図 2は、高電圧発生素子に圧電ト ランスを用いた場合であり、圧電トランス素子 200を固定するための絶縁ケース 202と コネクタ 204を一体構造としている。この一体構造により周囲空間との絶縁性に優れ ているが、この構造は、高電圧発生素子として捲線トランスを用いた場合には適用で きない。また、絶縁ケース 202とコネクタ 204は一体型ではある力 コネクタ 204の高 圧側入力端子 206を圧電トランス素子 200の高圧出力端子 208に半田接続しており 、絶縁ケース 202の内部で半田接続部が接触不良を起こす可能性が有り、接触不良 を起すと微小な放電を生じ、長時間続くと発煙や発火に至るような不具合が生じるこ とがある。  [0006] FIG. 2 shows a structure for improving the reliability of a high voltage output section having the possibility of such a problem (Japanese Patent Application No. 10-231241). FIG. 2 shows a case where a piezoelectric transformer is used for the high voltage generating element, and an insulating case 202 and a connector 204 for fixing the piezoelectric transformer element 200 are integrated. This integrated structure provides excellent insulation from the surrounding space, but this structure is not applicable when a wire transformer is used as the high-voltage generating element. Also, the insulation case 202 and the connector 204 are an integral type. The high voltage side input terminal 206 of the connector 204 is soldered to the high voltage output terminal 208 of the piezoelectric transformer element 200, and the solder connection part is in contact with the inside of the insulation case 202. If there is a contact failure, a minute discharge may occur, and if it lasts for a long time, it may cause problems such as smoke and fire.
[0007] 図 3は従来のインバータにおける高電圧出力部の他の構造であり、絶縁体 300で 高圧トランス部 302を覆い、絶縁体 300とコネクタ 304を一体形成し、高圧トランス部 302とコネクタ 304の接続リード 306, 308も絶縁体で覆う構造とし、高電圧部分とそ の近傍への絶縁信頼性をあげてレ、る。  FIG. 3 shows another structure of the high voltage output unit in the conventional inverter. The high voltage transformer unit 302 is covered with an insulator 300, and the insulator 300 and the connector 304 are integrally formed. The high voltage transformer unit 302 and the connector 304 are integrated. The connection leads 306 and 308 are also covered with an insulator so that the insulation reliability of the high voltage portion and its vicinity can be improved.
特許文献 1 :特開 2000 - 165062号公報  Patent Document 1: JP 2000-165062A
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0008] し力し、図 3のコネクタ一体構造にあっては、次に挙げるようなレ、くつかの欠点があ る。まずインバータの制御方式の中には高電圧出力側に出力波形を検出するための コンデンサを配置することがある。 [0008] However, the connector integrated structure of FIG. 3 has the following disadvantages. First, in some inverter control methods, a capacitor for detecting the output waveform may be placed on the high voltage output side.
[0009] 図 3ようなコネクタ一体構造とすると、高圧トランス部 302の高電圧出力端子とコネク タ 304の間にコンデンサを配置することができなレ、。このためコンデンサは一体化し たコネクタ 304の脇に配置せざるを得ず、基板 310の幅がその分大きくなり、またコネ クタの配置の自由度が失われてしまう。 If the connector integrated structure as shown in FIG. 3 is used, a capacitor cannot be disposed between the high voltage output terminal of the high voltage transformer section 302 and the connector 304. For this reason, the capacitor must be disposed beside the integrated connector 304, and the width of the substrate 310 is increased by that amount, and the degree of freedom in arranging the connector is lost.
[0010] また高圧トランス部 302とコネクタ 304の基板 310上の配置が異なるたびに、絶縁 体 300を製造する型を新規制作しなければならず、コスト面で負担が力かってしまう。 さらに高圧トランス部 302は発熱するために、絶縁体 300には耐熱性のある材料を使 用しなければならない。 [0010] Each time the arrangement of the high-voltage transformer 302 and the connector 304 on the substrate 310 is different, a new mold for manufacturing the insulator 300 must be produced, which increases the cost. Furthermore, since the high voltage transformer section 302 generates heat, the insulator 300 is made of a heat resistant material. Must be used.
[0011] しかし、コネクタ 304は本来発熱しない部品であり、コネクタ 304を一体構造としてし まうと、本来耐熱性の必要のないコネクタ 304にまで耐熱性材料を使用することとなり 、その分不要なコストをかけてしまう問題がある。  However, the connector 304 is a component that does not naturally generate heat. If the connector 304 is formed as an integral structure, a heat-resistant material is used even for the connector 304 that does not necessarily have heat resistance. There is a problem that spends.
[0012] 本発明は、インバータの高電圧出力部の不具合発生をなくして信頼性と安全性を 向上する高電圧回路、表示装置及び表示ユニットを提供することを目的とする。 課題を解決するための手段  [0012] An object of the present invention is to provide a high voltage circuit, a display device, and a display unit that improve the reliability and safety by eliminating the occurrence of problems in the high voltage output section of the inverter. Means for solving the problem
[0013] 本発明は、負荷に高電圧を供給して駆動する高電圧回路を提供する。即ち本発明 は、配線基板上に設けられた高電圧を出力する高電圧素子と高電圧を外部に供給 する外部接続コネクタからなる高電圧回路に於レ、て、高電圧素子と外部接続コネクタ 間は直接配線され、配線は、高電圧素子と外部接続間で空中において保持されるこ とを特徴する。 The present invention provides a high voltage circuit that drives by supplying a high voltage to a load. That is, the present invention provides a high-voltage circuit comprising a high-voltage element that outputs a high voltage provided on a wiring board and an external connection connector that supplies high voltage to the outside. Is directly wired, and the wiring is held in the air between the high voltage element and the external connection.
[0014] ここで高電圧素子は、冷陰極管に高電圧を供給し、発光駆動させるインバータであ る。また配線と前記配線基板間に高電圧素子を実装する。また配線と前記高電圧素 子を電気的に接続する。また配線と高電圧素子を直接接続する。更に、配線と高電 圧素子を配線基板を経由して接続する。  Here, the high voltage element is an inverter that supplies a high voltage to the cold cathode tube and drives to emit light. A high voltage element is mounted between the wiring and the wiring board. Also, the wiring and the high voltage element are electrically connected. Also, the wiring and the high voltage element are directly connected. Furthermore, the wiring and the high voltage element are connected via the wiring board.
[0015] 高電圧素子は、高電圧素子の前記高電圧の出力を監視する回路を構成する。外 部接続コネクタは、先端が L字形に屈曲された配線基板の位置に実装される。  The high voltage element constitutes a circuit that monitors the high voltage output of the high voltage element. The external connector is mounted at the position of the wiring board whose tip is bent in an L shape.
[0016] 本発明は、表示装置を提供する。即ち本発明は、配線基板上に設けられた高電圧 を出力する高電圧素子と高電圧を外部に供給する外部接続コネクタからなる高電圧 回路を有する表示装置に於いて、高電圧素子と外部接続コネクタ間は直接配線され 、配線は、高電圧素子と前記外部接続間で空中において保持されることを特徴する  [0016] The present invention provides a display device. That is, the present invention relates to a display device having a high voltage circuit provided on a wiring board and including a high voltage element that outputs a high voltage and an external connection connector that supplies the high voltage to the outside. The connectors are directly wired, and the wires are held in the air between the high voltage element and the external connection.
[0017] 本発明は、表示ユニットを提供する。即ち本発明は、配線基板上に設けられた高電 圧を出力する高電圧素子と高電圧を外部に供給する外部接続コネクタからなる高電 圧回路を有する表示ユニットに於いて、高電圧素子と外部接続コネクタ間は直接配 線され、配線は、高電圧素子と前記外部接続間で空中において保持されることを特 徴する。 [0018] なお、本発明の表示装置及び表示ユニットの詳細は、本発明の高電圧回路の場合 と基本的に同じになる。 [0017] The present invention provides a display unit. That is, the present invention relates to a display unit having a high voltage element provided on a wiring board and outputting a high voltage and a high voltage circuit comprising an external connector for supplying a high voltage to the outside. The external connection connectors are directly wired, and the wiring is maintained in the air between the high voltage element and the external connection. The details of the display device and display unit of the present invention are basically the same as those of the high voltage circuit of the present invention.
発明の効果  The invention's effect
[0019] このような本発明の高電圧回路、表示装置及び表示ユニットによれば、トランスの高 電圧出力端子と負荷接続用のコネクタの接続端子を一体構造とすることで、トランス の高電圧出力端子とコネクタ高電圧側入力端子の接続を基板の配線パターンを経 由せずに直接行うことができ、基板に外力が加わって反るなどして半田接続が剥離 することによる高電圧ルートの断線を確実にも防止し、高電圧出力部の信頼性と安全 性を向上することができる。  [0019] According to such a high voltage circuit, display device and display unit of the present invention, the high voltage output terminal of the transformer is integrated with the connection terminal of the connector for load connection, so that the high voltage output of the transformer The terminal can be connected directly to the high-voltage side input terminal without going through the wiring pattern on the board, and the high-voltage route is broken due to peeling of the solder connection due to warping due to external force applied to the board. Can be reliably prevented, and the reliability and safety of the high voltage output section can be improved.
図面の簡単な説明  Brief Description of Drawings
[0020] [図 1]従来のインバータにおける高電圧出力部の説明図;  [0020] FIG. 1 is an explanatory diagram of a high voltage output unit in a conventional inverter;
[図 2]圧電トランス素子と出力コネクタを一体化した従来の圧電トランスの説明図; [図 3]トランスと出力コネクタを一体化した従来のインバータの説明図;  [Fig. 2] An explanatory diagram of a conventional piezoelectric transformer in which a piezoelectric transformer element and an output connector are integrated; [Fig. 3] An explanatory diagram of a conventional inverter in which a transformer and an output connector are integrated;
[図 4]本発明によるインバータの平面及び側面の説明図;  FIG. 4 is an explanatory view of the plane and side of the inverter according to the present invention;
[図 5]図 4の高電圧出力部を取り出した本発明によるインバータの実施形態の説明図  FIG. 5 is an explanatory diagram of an embodiment of an inverter according to the present invention in which the high voltage output section of FIG. 4 is taken out.
[図 6]本発明によるインバータの回路ブロック図; FIG. 6 is a circuit block diagram of an inverter according to the present invention;
[図 7]本発明によるインバータの回路図;  FIG. 7 is a circuit diagram of an inverter according to the present invention;
[図 8]図 4の高電圧出力部を取り出した本発明によるインバータの他の実施形態の説 明図;  [FIG. 8] An explanatory diagram of another embodiment of the inverter according to the present invention from which the high voltage output section of FIG. 4 is taken out;
[図 9]基板先端を L字形とした本発明によるインバータの平面及び側面の説明図; [図 10]図 9の高電圧出力部を取り出した本発明によるインバータの実施形態の説明 図;  [FIG. 9] An explanatory view of a plane and a side surface of the inverter according to the present invention in which the front end of the substrate is L-shaped; [FIG.
[図 11]図 9の高電圧出力部を取り出した本発明によるインバータの他の実施形態の 説明図;  FIG. 11 is an explanatory diagram of another embodiment of the inverter according to the present invention, in which the high voltage output section of FIG. 9 is taken out;
[図 12]は図 5のインバータに使用する本発明の回路部品の説明図;  [FIG. 12] is an explanatory diagram of the circuit component of the present invention used in the inverter of FIG. 5;
[図 13]図 10のインバータに使用する本発明の回路部品の説明図;  FIG. 13 is an explanatory diagram of the circuit component of the present invention used in the inverter of FIG. 10;
発明を実施するための最良の形態 [0021] 図 4は、本発明の高電圧回路を構成するインバータの説明図である。図 4 (A)に平 面図を、図 4 (B)に側面図を示している。図 4において、本発明によるインバータ 10 は幅約 10mm程度で長さが 100mm程度の大きさを持つ、横長の基板 12を使用して レ、る。本発明のインバータ 10は、パーソナルコンピュータやノートブック型のコンビュ ータに使用される液晶ディスプレイの枠の部分に組み込まれることから、幅が狭ぐ細 長い基板形状を持つ。 BEST MODE FOR CARRYING OUT THE INVENTION FIG. 4 is an explanatory diagram of an inverter constituting the high voltage circuit of the present invention. Fig. 4 (A) shows a plan view and Fig. 4 (B) shows a side view. In FIG. 4, an inverter 10 according to the present invention uses a horizontally long substrate 12 having a width of about 10 mm and a length of about 100 mm. Since the inverter 10 of the present invention is incorporated in a frame portion of a liquid crystal display used in a personal computer or a notebook computer, the inverter 10 has a narrow and narrow substrate shape.
[0022] 基板 12上には左側より入力コネクタ 14、インバータ回路部 16、 1次卷線と 2次卷線 を有するトランス 18及び出力コネクタ 20が実装されている。インバータ 10における高 電圧出力部はトランス 18と出力コネクタ 20で構成される。  [0022] On the board 12, an input connector 14, an inverter circuit section 16, a transformer 18 having a primary winding and a secondary winding, and an output connector 20 are mounted from the left side. The high voltage output section in the inverter 10 is composed of a transformer 18 and an output connector 20.
[0023] 本発明のインバータ 10における高電圧出力部にあっては、高電圧発生素子である トランス 18の高電圧出力端子 22—1、 24-1と負荷である冷陰極管を接続する出力コ ネクタ 20のコネクタ端子を一体構造としたことを特徴とする。 [0023] In the high voltage output section of the inverter 10 of the present invention, the output voltage connecting the high voltage output terminals 22-1 and 24-1 of the transformer 18 that is a high voltage generating element and the cold cathode tube that is the load. The connector terminal of the Nectar 20 is an integral structure.
[0024] またトランス 18と出力コネクタ 20の間には回路部品の収納スペースが形成されてお り、ここにこの実施形態にあってはコンデンサ 26で実装している。 [0024] A storage space for circuit components is formed between the transformer 18 and the output connector 20, and in this embodiment, the space is mounted by a capacitor 26.
[0025] 図 5は、図 4の高電圧出力部を取り出した本発明によるインバータ 10の実施形態の 説明図であり、図 5 (A)に斜視図を、図 5 (B)にコネクタ側を断面とした側面図を示し ている。 FIG. 5 is an explanatory diagram of an embodiment of the inverter 10 according to the present invention from which the high voltage output unit of FIG. 4 is taken out. FIG. 5 (A) is a perspective view, and FIG. A cross-sectional side view is shown.
[0026] 図 5 (A)において、基板 12に実装されたトランス 18からは一対の高電圧出力端子 2 2-1, 24— 1が基板 12に対し略平行に離れた中空位置となるように取り出されている  In FIG. 5 (A), a pair of high voltage output terminals 2 2-1, 24-1 are located in a hollow position away from the transformer 12 mounted on the substrate 12 substantially parallel to the substrate 12. Being taken out
[0027] ここで高電圧出力端子 22— 1はプラス側であり、高電圧出力端子 24— 1はマイナス 側となる。トランス 18から取り出された高電圧出力端子 22—1 , 24-1は基板 12の先 端側に回路部品の収納スペースを介して配置された出力コネクタ 20のコネクタケー ス 28に一体化されてコネクタ開口部にコネクタ端子 22— 2, 24— 2として存在している [0027] Here, the high voltage output terminal 22-1 is on the plus side, and the high voltage output terminal 24-1 is on the minus side. The high-voltage output terminals 22-1 and 24-1 taken out from the transformer 18 are integrated with the connector case 28 of the output connector 20 arranged on the front end side of the substrate 12 via the storage space for circuit components. Present as connector terminals 22-2 and 24-2 in the opening
[0028] 即ち本発明にあってはトランス 18の高電圧出力端子 22—1 , 24—1と出力コネクタ 2 0のコネクタ端子 22—2, 24—2がそれぞれ一体構造となっている。更にトランス 18と 出力コネクタ 20との間の電気部品の収納スペースとなる基板 12の位置にはコンデン サ 26が実装されている。 In other words, in the present invention, the high voltage output terminals 22-1 and 24-1 of the transformer 18 and the connector terminals 22-2 and 24-2 of the output connector 20 have an integral structure. In addition, there is a capacitor at the position of the substrate 12 that is a storage space for electrical components between the transformer 18 and the output connector 20. 26 is implemented.
[0029] コンデンサ 26は両端に電極 30, 32を備えた表面実装型のコンデンサであり、トラン ス 18のプラス側の高電圧出力端子 22-1が電極 30に接続され、電極 32側を配線パ ターン 36により図 4のインバータ回路部 16側に接続している。  [0029] Capacitor 26 is a surface mount type capacitor having electrodes 30 and 32 at both ends. High voltage output terminal 22-1 on the positive side of transformer 18 is connected to electrode 30, and electrode 32 is connected to the wiring pad. It is connected to the inverter circuit part 16 side in FIG.
[0030] 図 5 (B)の側面図を見ると、トランス 18から取り出されたプラス側の高電圧出力端子 22— 1の途中には基板側に向けて基板端子 22— 3がー体に形成されており、基板端 子 22—3側はランド 34に接続されており、これによつてコンデンサ 26の電極 30をプラ ス側の高電圧出力端子 22— 1に接続している。  [0030] Referring to the side view of FIG. 5 (B), in the middle of the positive high-voltage output terminal 22-1 taken out from the transformer 18, the board terminal 22-3 is formed in the body toward the board side. The board terminal 22-3 side is connected to the land 34, whereby the electrode 30 of the capacitor 26 is connected to the high voltage output terminal 22-1 on the plus side.
[0031] 図 6は、本発明のインバータ 10における回路ブロック図である。図 6において、本発 明のインバータ 10は入力コネクタ 14に続いて、入力回路部 38、発振回路部 40及び 昇圧回路部 42を備えており、昇圧回路部 42の出力を出力コネクタ 20に供給してい る。入力コネクタ 14から入力された DC電力は入力回路部 38から発振回路部 40に 供給され、発振回路部 40で例えば 50KHz— ΙΟΟΚΗζの範囲の特定周波数となる 小電力の AC波形出力を発生する。  FIG. 6 is a circuit block diagram of the inverter 10 of the present invention. In FIG. 6, the inverter 10 of the present invention includes an input circuit section 38, an oscillation circuit section 40, and a boost circuit section 42 following the input connector 14, and supplies the output of the boost circuit section 42 to the output connector 20. ing. The DC power input from the input connector 14 is supplied from the input circuit unit 38 to the oscillation circuit unit 40, and the oscillation circuit unit 40 generates a low-power AC waveform output having a specific frequency in the range of, for example, 50 KHz-ΙΟΟΚΗζ.
[0032] この小電力の AC波形出力は図 5に示したトランス 18を備えた昇圧回路部 42に入 力され、例えば 800— 1500Vrms maxの間の高電圧に昇圧された後、出力コネクタ 2 0に供給され、出力コネクタ 20から負荷としての冷陰極管に供給されて、冷陰極管を 発光駆動する。  [0032] This low-power AC waveform output is input to the booster circuit unit 42 including the transformer 18 shown in FIG. 5 and boosted to a high voltage between 800 and 1500 Vrms max, for example, and then output connector 20 To the cold cathode tube as a load from the output connector 20 to drive the cold cathode tube to emit light.
[0033] 図 7は、本発明のインバータ 10におけるインバータ回路部 16の具体例を示した回 路図である。図 7において、インバータ回路部 16の入力側には入力コネクタ 14が設 けられ、出力側にはトランス 18及び出力コネクタ 20が設けられている。  FIG. 7 is a circuit diagram showing a specific example of the inverter circuit section 16 in the inverter 10 of the present invention. In FIG. 7, an input connector 14 is provided on the input side of the inverter circuit section 16, and a transformer 18 and an output connector 20 are provided on the output side.
[0034] トランス 18は 1次卷線 18—1と 2次卷線 18—2を有し、 2次卷線 18—2を出力コネクタ 20に接続している。インバータ回路部 16は制御 IC44、トランジスタ Q1 Q4、抵抗 R 1一 R18、コンデンサ CI , C3 C22、ダイオード Dl , D2で構成されている。  The transformer 18 has a primary winding 18-1 and a secondary winding 18-2, and the secondary winding 18-2 is connected to the output connector 20. The inverter circuit section 16 includes a control IC 44, transistors Q1 and Q4, resistors R1 and R18, capacitors CI and C3 and C22, and diodes Dl and D2.
[0035] ここでトランス 18のプラス側の高電圧出力ライン 25に対してはコンデンサ 26の一旦 が接続され、コンデンサ 26の他端はコンデンサ C3を介して制御 IC44に接続されて いる。制御 IC44はコンデンサ 26を介してトランス 18より出力される高電圧の出力電 圧を検出して監視し、例えば出力電圧が断たれた時に発振動作を停止するなど必要 な制御を行う。 Here, the capacitor 26 is temporarily connected to the positive high voltage output line 25 of the transformer 18, and the other end of the capacitor 26 is connected to the control IC 44 via the capacitor C 3. The control IC 44 detects and monitors the high voltage output voltage output from the transformer 18 via the capacitor 26, and needs to stop the oscillation operation when the output voltage is cut off, for example. Control.
[0036] またこの実施形態のインバータ回路部 16にあっては、従来、インバータに必要不可 欠であったチョークコイルは設けられておらず、トランス 18の持つ漏洩磁束を利用す ることでチョークコイルを不要とし、これによつてインバータ回路部 16の小型化を図つ ている。  In addition, in the inverter circuit section 16 of this embodiment, the choke coil that is conventionally necessary for the inverter is not provided, and the choke coil is obtained by using the leakage magnetic flux of the transformer 18. As a result, the inverter circuit section 16 is reduced in size.
[0037] なお、本発明のインバータ 10で使用するインバータ回路部 16としては、高電圧発 生素子として 1次卷線 18—1と 2次卷線 18—2を有するトランス 18を使用するものであ れば良ぐ適宜のインバータ回路を使用することができる。  [0037] The inverter circuit unit 16 used in the inverter 10 of the present invention uses a transformer 18 having a primary winding 18-1 and a secondary winding 18-2 as a high-voltage generating element. If so, an appropriate inverter circuit can be used.
[0038] また本発明に使用するインバータ回路部 16は、トランス 18のプラス側の高電圧出 カライン 25よりコンデンサ 26を介して出力電圧を検知する回路構成を備えることが必 要である。 In addition, the inverter circuit unit 16 used in the present invention needs to have a circuit configuration for detecting the output voltage from the high-voltage output line 25 on the plus side of the transformer 18 via the capacitor 26.
[0039] 再び図 5を参照するに、本発明のインバータ 10における高電圧出力部にあっては 、トランス 18より取り出された高電圧出力端子 22-1 , 24— 1はそのまま出力コネクタ 2 0におけるコネクタ端子 22-2, 24-2となっており、トランス 18からの高電圧出力端子 22-1, 24— 1の基板 12上の配線パターンに対する半田接続が不要である。  Referring to FIG. 5 again, in the high voltage output section of the inverter 10 of the present invention, the high voltage output terminals 22-1 and 24-1 taken out from the transformer 18 are not changed in the output connector 20 as they are. The connector terminals 22-2 and 24-2 do not require solder connection to the wiring pattern on the board 12 of the high voltage output terminals 22-1, 24-1 from the transformer 18.
[0040] このため基板 12に外力が加わって反るようなことがあっても、トランス 18の高電圧出 力端子 22— 1, 24— 1は基板 12側に半田接続されていないため、高電圧出力端子の 剥離による不具合をを起こすことはなレ、。  [0040] For this reason, even if an external force is applied to the board 12 and warps, the high voltage output terminals 22-1, 24-1 of the transformer 18 are not soldered to the board 12 side. There will be no problems due to peeling of the voltage output terminals.
[0041] またトランス 18から取り出された高電圧出力端子 22-1, 24— 1は、基板 12に対し 高さ方向に離れた中空位置に取り出されて、絶縁材料で形成されたコネクタケース 2 8に埋設固定されており、これによつて基板 12上の配線パターンに対し十分な絶縁 確保でき、高電圧であっても十分な信頼性と安全性を確保することができる。  [0041] Further, the high voltage output terminals 22-1, 24-1 taken out from the transformer 18 are taken out to a hollow position away from the substrate 12 in the height direction, and a connector case 2 8 formed of an insulating material. As a result, it is possible to ensure sufficient insulation against the wiring pattern on the substrate 12, and to ensure sufficient reliability and safety even at high voltages.
[0042] 図 8は、図 4の高電圧出力部を取り出した本発明によるインバータ 10の他の実施形 態の説明図である。この実施形態にあっては、トランス 18から取り出された高電圧出 力端子 22— 1, 24—1の下側の基板 12上にコンデンサ 26を実装している力 コンデン サ 26の電極 30に対するプラス側高電圧出力端子 22-1の電気的な接続を半田接続 部 46で行うようにしたことを特徴とする。  FIG. 8 is an explanatory diagram of another embodiment of the inverter 10 according to the present invention, in which the high voltage output unit of FIG. 4 is taken out. In this embodiment, the positive voltage with respect to the electrode 30 of the force capacitor 26 in which the capacitor 26 is mounted on the lower substrate 12 of the high voltage output terminals 22-1 and 24-1 taken out from the transformer 18. The high-voltage output terminal 22-1 is electrically connected by the solder connection 46.
[0043] このため図 5の実施形態のようにプラス側の高電圧出力端子 22— 1の途中に基板 端子 22— 3を設ける必要がなぐその分、構造を簡単にすることができる。尚、コンデ ンサ 26の電極 30は上側でプラス側の高電圧出力端子 22-1と半田接続部 46で接 続されているため、電極 30のランド 34に対する半田付けはコンデンサ 26を基板 12 に固定するために行われている。 [0043] Therefore, as in the embodiment of FIG. 5, the substrate is placed in the middle of the positive high-voltage output terminal 22-1. Since it is not necessary to provide the terminals 22-3, the structure can be simplified. Since the electrode 30 of the capacitor 26 is connected to the positive high voltage output terminal 22-1 on the upper side and the solder connection portion 46, the capacitor 26 is fixed to the substrate 12 when the electrode 30 is soldered to the land 34. Has been done to.
[0044] 図 9は、基板先端側を L字型とした本発明によるインバータの平面及び側面の説明 図である。図 9 (A)に示すように、基板 12はこの実施形態においては、出力側の先 端力 字型に屈曲形成されて、 L字端部 48を形成しており、 L字型端部 48に出力コ ネクタ 20を配置している。トランス 18から取り出された高電圧出力端子 50—1, 52-1 は L字端部 48に配置される出力コネクタ 20に向けて直交する方向に屈曲された後、 コネクタ 20に一体化されて、そのコネクタ端子となっている。また図 9 (B)の側面から 明らかなように、トランス 18と出力コネクタ 20の間の高電圧出力端子 50—1 , 52-1の 下に位置する基板 12上にはコンデンサ 26が実装されている。この L字端部 48を持 つ基板 12はインバータ 10を液晶ディスプレイの枠のコーナー部分に組み込む際に 有利である。 FIG. 9 is an explanatory view of the plane and side of the inverter according to the present invention in which the front end side of the substrate is L-shaped. As shown in FIG. 9 (A), in this embodiment, the substrate 12 is bent into an output end leading force-shaped shape to form an L-shaped end portion 48, and an L-shaped end portion 48 is formed. The output connector 20 is arranged at. The high voltage output terminals 50-1 and 52-1 taken out from the transformer 18 are bent in a direction orthogonal to the output connector 20 disposed at the L-shaped end 48, and then integrated with the connector 20. That connector terminal. As is apparent from the side of FIG. 9B, a capacitor 26 is mounted on the substrate 12 located under the high voltage output terminals 50-1 and 52-1 between the transformer 18 and the output connector 20. Yes. The substrate 12 having the L-shaped end portion 48 is advantageous when the inverter 10 is incorporated in the corner portion of the frame of the liquid crystal display.
[0045] 図 10は、図 9の高電圧出力部を取り出した本発明のインバータの実施形態の説明 図である。図 10 (A)において、トランス 18から取り出された高電圧出力端子 50-1, 5 2-1は、先端側で 90度屈曲され、 L字端部 48に位置する出力コネクタ 20のコネクタ ケース 28に一体化され、先端側に開口したコネクタ内部のコネクタ端子 50-2, 52- 2となっている。  FIG. 10 is an explanatory diagram of an embodiment of the inverter of the present invention from which the high voltage output unit of FIG. 9 is taken out. In FIG. 10 (A), the high-voltage output terminals 50-1 and 52-1 taken out from the transformer 18 are bent 90 degrees on the tip side, and the connector case 28 of the output connector 20 located at the L-shaped end 48. The connector terminals 50-2 and 52-2 are integrated in the connector and open at the tip end.
[0046] トランス 18と出力コネクタ 20との間の基板 12上にはコンデンサ 26が実装されている 。コンデンサ 26は電極 30, 32を両端に備えた表面実装型のコンデンサであり、この 実施形態にあっては基板 12上のランド 34, 35に半田接続により固定され、プラス側 の高電圧出力端子 50—1とコンデンサ 26の電極 30の接続は半田接続部 56で直接 行われている。  A capacitor 26 is mounted on the substrate 12 between the transformer 18 and the output connector 20. The capacitor 26 is a surface-mount type capacitor having electrodes 30 and 32 at both ends. In this embodiment, the capacitor 26 is fixed to the lands 34 and 35 on the substrate 12 by soldering, and is connected to the positive high voltage output terminal 50. The connection between —1 and electrode 30 of capacitor 26 is made directly at solder connection 56.
[0047] コンデンサ 26に対する半田接続部 56によるプラス側の高電圧出力端子 50—1の接 続状態は図 10 (B)の側面図からその位置関係がわかる。  [0047] The connection state of the high-voltage output terminal 50-1 on the positive side by the solder connection portion 56 to the capacitor 26 can be seen from the side view of FIG. 10 (B).
[0048] 図 11は、図 9の高電圧出力部を取り出した本発明によるインバータの他の実施形 態の説明図である。この実施形態にあっては、トランス 18から取り出したプラス側の高 電圧出力端子 50— 1の途中に基板 12上に U字型に屈曲した基板端子 54を形成し、 基板端子 54をランド 38に接続し、更にランド 38からコンデンサ 26の電極 30が半田 接続されたランド 34に配線パターンで接続されている。 FIG. 11 is an explanatory diagram of another embodiment of the inverter according to the present invention from which the high voltage output unit of FIG. 9 is taken out. In this embodiment, the positive side of the transformer 18 A U-shaped bent board terminal 54 is formed on the board 12 in the middle of the voltage output terminal 50—1, the board terminal 54 is connected to the land 38, and the electrode 30 of the capacitor 26 is soldered to the land 38. It is connected to the land 34 with a wiring pattern.
[0049] 図 12は、図 5のインバータに使用する本発明の回路部品の説明図である。図 12 ( A)において、本発明の回路部品 60はトランス 18と出力コネクタ 20を一体構造として いる。即ちトランス 18の出力側から取り出された高電圧出力端子 22—1 , 24-1を出 力コネクタ 20のコネクタケース 28内に揷入固着し、その先端をコネクタ端子 22—2, 2 4—2と一体化している。 FIG. 12 is an explanatory diagram of the circuit component of the present invention used in the inverter of FIG. In FIG. 12A, the circuit component 60 of the present invention has a transformer 18 and an output connector 20 as an integral structure. In other words, the high voltage output terminals 22-1 and 24-1 taken from the output side of the transformer 18 are inserted and fixed in the connector case 28 of the output connector 20, and the ends thereof are connected to the connector terminals 22-2 and 2 4-2. It is integrated with.
[0050] また図 12 (B)のようにプラス側の高電圧出力端子 22— 1の途中には下側に向けて 基板 12に半田接続するための基板端子 22—3がー体に形成されている。なお、トラ ンス 18の入力側には入力端子 62が設けられている。  [0050] Further, as shown in FIG. 12 (B), a substrate terminal 22-3 for solder connection to the substrate 12 is formed in the middle of the high voltage output terminal 22-1 on the positive side toward the lower side. ing. An input terminal 62 is provided on the input side of the transformer 18.
[0051] このような構造をもつ図 12の回路部品 60をひとつの部品として作り、回路部品 60 を図 5に示したように基板 12上に実装することで、本発明のインバータ 10における高 電圧出力部を簡単に取り付けることができる。  [0051] By making the circuit component 60 of FIG. 12 having such a structure as one component and mounting the circuit component 60 on the substrate 12 as shown in FIG. 5, the high voltage in the inverter 10 of the present invention is obtained. The output part can be easily attached.
[0052] 図 13は、図 10のインバータに使用する本発明の回路部品 60の説明図である。こ の回路部品 60の実施形態にあっては、トランス 18より取り出した高電圧出力端子 50 -1, 52-1をその途中で直交する方向に屈曲し、その先端を出力コネクタ 20のコネク タケース 28内に一体に坦設し、コネクタ端子 50— 2, 52— 2としている。  FIG. 13 is an explanatory diagram of the circuit component 60 of the present invention used in the inverter of FIG. In the embodiment of this circuit component 60, the high voltage output terminals 50-1, 52-1 taken out from the transformer 18 are bent in the direction perpendicular to the middle, and the tip thereof is connected to the connector case 28 of the output connector 20. The connector terminals 50-2 and 52-2 are installed in one piece.
[0053] このようにトランス 18と出力コネクタ 20を一体構造とした回路部品 60を用いることで 、液晶ディスプレイのコーナー部に配置される先端部を L字型とした回路基板に対す る高電圧出力部の実装が簡単かつ容易にできる。  [0053] By using the circuit component 60 in which the transformer 18 and the output connector 20 are integrated as described above, a high-voltage output to a circuit board in which the tip portion arranged at the corner portion of the liquid crystal display is L-shaped is used. Mounting of parts can be done easily and easily.
[0054] 尚、図 12の回路部品 60は図 5のインバータの場合を、また図 13の回路部品 60は 図 10のインバータを例にとるものであつたが、図 8の実施形態のインバータ及び図 11 の実施形態のインバータについてもトランス 18と出力コネクタ 20の一体構造をそのま まひとつの回路部品として提供することができる。  Note that the circuit component 60 of FIG. 12 is the case of the inverter of FIG. 5 and the circuit component 60 of FIG. 13 is an example of the inverter of FIG. 10, but the inverter of the embodiment of FIG. The integrated structure of the transformer 18 and the output connector 20 can also be provided as a single circuit component for the inverter of the embodiment of FIG.
[0055] また、上記の実施形態にあってはトランス 18からの高電圧出力端子と出力コネクタ のコネクタ端子とを一体化構造とする部材として、断面円形のピン部材を使用してい るが、これに限定されず矩形断面を持つプレート部材であってもよい。また本発明は その目的と利点を損なわない適宜の変形を含み、さらに上記の実施形態に示した数 値による限定は受けない。 [0055] In the above embodiment, a pin member having a circular cross section is used as a member having an integrated structure of the high voltage output terminal from the transformer 18 and the connector terminal of the output connector. However, the plate member may be a plate member having a rectangular cross section. The present invention also provides The invention includes appropriate modifications that do not impair the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

Claims

請求の範囲 The scope of the claims
[I] 配線基板上に設けられた高電圧を出力する高電圧素子と前記高電圧を外部に供 給する外部接続コネクタからなる高電圧回路に於いて、  [I] In a high voltage circuit comprising a high voltage element that outputs a high voltage provided on a wiring board and an external connection connector that supplies the high voltage to the outside.
前記高電圧素子と前記外部接続コネクタ間は直接配線され、前記配線は、前記高 電圧素子と前記外部接続間で空中において保持されることを特徴する高電圧回路。  A high-voltage circuit, wherein the high-voltage element and the external connection connector are directly wired, and the wiring is held in the air between the high-voltage element and the external connection.
[2] 請求項 1記載の高電圧回路に於いて、前記高電圧素子は、冷陰極管に高電圧を 供給し、発光駆動させるインバータであることを特徴とする高電圧回路。  2. The high voltage circuit according to claim 1, wherein the high voltage element is an inverter that supplies a high voltage to a cold cathode tube and drives to emit light.
[3] 請求項 1記載の高電圧回路に於いて、前記配線と前記配線基板間に前記高電圧 素子を実装することを特徴とする高電圧回路。 3. The high voltage circuit according to claim 1, wherein the high voltage element is mounted between the wiring and the wiring board.
[4] 請求項 3記載の高電圧回路に於いて、前記配線と前記高電圧素子を電気的に接 続することを特徴とする高電圧回路。 4. The high voltage circuit according to claim 3, wherein the wiring and the high voltage element are electrically connected.
[5] 請求項 4記載の高電圧回路に於いて、前記配線と前記高電圧素子を直接接続す ることを特徴とする高電圧回路。 5. The high voltage circuit according to claim 4, wherein the wiring and the high voltage element are directly connected.
[6] 請求項 4記載の高電圧回路に於いて、前記配線と前記高電圧素子を前記配線基 板を経由して接続することを特徴とする高電圧回路。 6. The high voltage circuit according to claim 4, wherein the wiring and the high voltage element are connected via the wiring board.
[7] 請求項 3記載の高電圧回路に於いて、前記高電圧素子は、前記高電圧素子の前 記高電圧の出力を監視する回路を構成することを特徴とする高電圧回路。 7. The high voltage circuit according to claim 3, wherein the high voltage element constitutes a circuit for monitoring the high voltage output of the high voltage element.
[8] 請求項 1記載の高電圧回路に於いて、前記外部接続コネクタは、先端が L字形に屈 曲された前記配線基板の位置に実装されることを特徴とする高電圧回路。 8. The high voltage circuit according to claim 1, wherein the external connection connector is mounted at a position of the wiring board whose tip is bent in an L shape.
[9] 配線基板上に設けられた高電圧を出力する高電圧素子と前記高電圧を外部に供 給する外部接続コネクタからなる高電圧回路を有する表示装置に於いて、 [9] In a display device having a high-voltage circuit comprising a high-voltage element that outputs a high voltage provided on a wiring board and an external connection connector that supplies the high voltage to the outside.
前記高電圧素子と前記外部接続コネクタ間は直接配線され、前記配線は、前記高 電圧素子と前記外部接続間で空中において保持されることを特徴する表示装置。  The display device, wherein the high-voltage element and the external connection connector are directly wired, and the wiring is held in the air between the high-voltage element and the external connection.
[10] 請求項 9記載の表示装置に於いて、前記高電圧素子は、冷陰極管に高電圧を供 給し、発光駆動させるインバータであることを特徴とする表示装置。 10. The display device according to claim 9, wherein the high voltage element is an inverter that supplies a high voltage to a cold cathode tube and drives to emit light.
[II] 請求項 9記載の表示装置に於いて、前記配線と前記配線基板間に前記高電圧素 子を実装することを特徴とする表示装置。  [II] The display device according to claim 9, wherein the high-voltage element is mounted between the wiring and the wiring board.
[12] 請求項 11記載の表示装置に於いて、前記配線と前記高電圧素子を電気的に接続 することを特徴とする表示装置。 12. The display device according to claim 11, wherein the wiring and the high voltage element are electrically connected. A display device characterized by:
[13] 請求項 12記載の表示装置に於いて、前記配線と前記高電圧素子を直接接続する ことを特徴とする表示装置。  13. The display device according to claim 12, wherein the wiring and the high voltage element are directly connected.
[14] 請求項 12記載の表示装置に於いて、前記配線と前記高電圧素子を前記配線基板 を経由して接続することを特徴とする表示装置。 14. The display device according to claim 12, wherein the wiring and the high voltage element are connected via the wiring substrate.
[15] 請求項 11記載の表示装置に於いて、前記高電圧素子は、前記高電圧素子の前記 高電圧の出力を監視する回路を構成することを特徴とする表示装置。 15. The display device according to claim 11, wherein the high voltage element constitutes a circuit that monitors the high voltage output of the high voltage element.
[16] 請求項 9記載の表示装置に於いて、前記外部接続コネクタは、先端が L字形に屈 曲された前記配線基板の位置に実装されることを特徴とする表示装置。 16. The display device according to claim 9, wherein the external connector is mounted at a position of the wiring board whose tip is bent in an L shape.
[17] 配線基板上に設けられた高電圧を出力する高電圧素子と前記高電圧を外部に供 給する外部接続コネクタからなる高電圧回路を有する表示ユニットに於いて、 前記高電圧素子と前記外部接続コネクタ間は直接配線され、前記配線は、前記高 電圧素子と前記外部接続間で空中において保持されることを特徴する表示ユニット。 [17] In a display unit comprising a high voltage element provided on a wiring board for outputting a high voltage and an external connection connector for supplying the high voltage to the outside, the high voltage element and the above The display unit is characterized in that the external connection connector is directly wired, and the wiring is held in the air between the high voltage element and the external connection.
[18] 請求項 17記載の表示ユニットに於いて、前記高電圧素子は、冷陰極管に高電圧を 供給し、発光駆動させるインバータであることを特徴とする表示ユニット。 18. The display unit according to claim 17, wherein the high voltage element is an inverter that supplies a high voltage to the cold cathode tube and drives to emit light.
[19] 請求項 17記載の表示ユニットに於いて、前記配線と前記配線基板間に前記高電 圧素子を実装することを特徴とする表示ユニット。 19. The display unit according to claim 17, wherein the high voltage element is mounted between the wiring and the wiring board.
[20] 請求項 19記載の表示ユニットに於いて、前記配線と前記高電圧素子を電気的に 接続することを特徴とする表示ユニット。 20. The display unit according to claim 19, wherein the wiring and the high voltage element are electrically connected.
PCT/JP2004/009719 2004-07-08 2004-07-08 High voltage circuit, display and display unit WO2006006206A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2004/009719 WO2006006206A1 (en) 2004-07-08 2004-07-08 High voltage circuit, display and display unit
JP2006527647A JP4575381B2 (en) 2004-07-08 2004-07-08 High voltage circuit, display device and display unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/009719 WO2006006206A1 (en) 2004-07-08 2004-07-08 High voltage circuit, display and display unit

Publications (1)

Publication Number Publication Date
WO2006006206A1 true WO2006006206A1 (en) 2006-01-19

Family

ID=35783572

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2004/009719 WO2006006206A1 (en) 2004-07-08 2004-07-08 High voltage circuit, display and display unit

Country Status (2)

Country Link
JP (1) JP4575381B2 (en)
WO (1) WO2006006206A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010084643A1 (en) * 2009-01-22 2010-07-29 シャープ株式会社 Electronic device, illuminating device, and liquid crystal display

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11252935A (en) * 1998-03-04 1999-09-17 Mitsui Chem Inc High-voltage power supply and electronic device using the same
JP2000165052A (en) * 1998-11-30 2000-06-16 Kyocera Corp Multilayer wiring board
JP2001044053A (en) * 1999-07-27 2001-02-16 Taiyo Yuden Co Ltd Transformer and discharge lamp lighting apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH118131A (en) * 1997-06-13 1999-01-12 Toko Inc Wiring structure of transformer
JP2003299390A (en) * 2002-03-29 2003-10-17 Sumitomo Heavy Ind Ltd Electric power unit for driving three-phase ac motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11252935A (en) * 1998-03-04 1999-09-17 Mitsui Chem Inc High-voltage power supply and electronic device using the same
JP2000165052A (en) * 1998-11-30 2000-06-16 Kyocera Corp Multilayer wiring board
JP2001044053A (en) * 1999-07-27 2001-02-16 Taiyo Yuden Co Ltd Transformer and discharge lamp lighting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010084643A1 (en) * 2009-01-22 2010-07-29 シャープ株式会社 Electronic device, illuminating device, and liquid crystal display

Also Published As

Publication number Publication date
JP4575381B2 (en) 2010-11-04
JPWO2006006206A1 (en) 2008-04-24

Similar Documents

Publication Publication Date Title
US7626338B2 (en) Discharge lamp lighting apparatus
JP2009064568A (en) Dc/ac inverter base board provided with voltage abnormality detecting circuit
JP4293004B2 (en) Discharge lamp lighting device
JP2008016582A (en) Printed circuit board for electronic device
JP4575381B2 (en) High voltage circuit, display device and display unit
CN112425018B (en) Electrical junction box
JP4389573B2 (en) Power supply
JP2007281356A (en) Piezoelectric ceramic transformer apparatus and light source apparatus employing the same
JP2007288978A (en) Power supply apparatus and electrodeless discharge lamp lighting device, lighting fixture
JP3116800B2 (en) Induction heating cooker
JP4126630B2 (en) Piezoelectric transformer inverter and piezoelectric transformer
TW595096B (en) Piezo-electric transformer
JPH11252937A (en) Inverter circuit for lighting cold-cathode tube
JP3484975B2 (en) Power supply
JP2004342997A (en) Circuit board with casing, cathode ray tube control circuit, and method for manufacturing circuit board with casing
KR200415094Y1 (en) A Bobbin of Inverter Transformer
JP4134378B2 (en) Piezoelectric transformer
JP2002075045A (en) Lighting equipment
JPH10240147A (en) Liquid crystal device
JP4736925B2 (en) Discharge lamp lighting device and lighting fixture
JP4433346B2 (en) Piezoelectric transformer device and manufacturing method thereof
JP2011258601A (en) Board device, power supply device and lighting device
JPH09181373A (en) Piezoelectric transformer inverter
JP2009245875A (en) Power supply device, and illumination apparatus using the same
JP2009245868A (en) Lighting system and drive device

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2006527647

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase