CN100429729C - Electronic device and capacitor, and method for mounting capacitor in said electronic device - Google Patents

Abstract

Provided is an electric apparatus, a capacitor and a method of mounting the capacitor in the electronic apparatus which can be made in the form of a thin type even with a large-capacity capacitor mounted therein in the application to e.g. an electronic still camera, a portable telephone, PDA, etc. Anode electrodes and cathode electrodes are alternately laminated to form a flat plate-like capacitor (11). The capacitor (11) is disposed along the surface of the armor (10A) of an apparatus.

Description

Electronic installation, capacitor installation method

Technical field

The present invention relates to the installation method of the capacitor in electronic installation, capacitor and the electronic installation, for example can be applicable to Electrofax, portable phone, PDA (Personal Digital Assistants; Personal digital assistant) etc.The present invention forms capacitor by alternative stacked anode electrode and cathode electrode and with writing board shape, and disposes this capacitor by the outer dress face along device, thereby even be provided with under the situation of large value capacitor, also can be with the electronic installation thin typeization.

Background technology

In the past, Electrofax etc. carry electronic installation, carry out thin typeization in order to improve Portability.Therefore, for the electronic unit that provides in installing, also adopt the electronic unit of thin thickness.But, when the electrolytic capacitor of large value capacitor, to compare with miscellaneous part, its thickness is thick.Therefore, in carrying electronic installation, the such large value capacitor of electrolytic capacitor of having to avoid installing.

That is, carry electronic installation and for example carry out work by power supplys such as secondary cell, solar cells.But these power supplys have the bigger shortcoming of internal resistance.Therefore, in these power supplys, if the transient flow super-high-current, then the decline of supply voltage is violent.Therefore, carry the electric power of electronic installation, relax the decline of the supply voltage that transient current causes, reduce the impedance of power supply, to guarantee stable action by charging in large value capacitor.

In addition, carry the booster circuit of use for electronic equipment DC-DC converter etc., such power supply is boosted, to guarantee the supply voltage of requirement.Even in such booster circuit, with supply voltage smoothly turn to purpose, also to use large value capacitor.

In addition, Electrofax comes subject is thrown light on by photoflash lamp.In such electronic installation, the reply shutter operation, the luminous element of formation xenon lamp etc., so that drive by high voltage (250[V under the xenon lamp situation] about), big electric power moment, by the discharge of the electric power in large value capacitor (about hundreds of [μ F]) that charges, supply with driving power to such luminous element.

Thus, in carrying electronic installation, whole thickness is restricted because of the thickness of such large value capacitor, and there is the problem that is difficult to thin typeization in the result.

About such side electronic installation that carries, for example in the spy opens flat 2-79373 communique etc., the accommodating method of battery is proposed.

Summary of the invention

Consider above situation, the object of the present invention is to provide the installation method of the capacitor in a kind of electronic installation, capacitor and the electronic installation, even be provided with the situation of large value capacitor, also can thin typeization.

In order to solve above-mentioned problem, in the invention of scheme 1, in electronic installation, with the dress face configuration outside it of its capacitor, so that the anode electrode of described outer dress face and described capacitor is parallel, wherein, described capacitor alternative stacked anode electrode and cathode electrode also form writing board shape.Described outer dress face is the medial surface of outer dress, makes the termination contact of circuit block be set at described capacitor and lip-deep electrode described medial surface side opposition side, described capacitor is connected to corresponding described circuit determines.

In addition, in the invention of scheme 6, in the installation method of the capacitor of electronic installation, outer dress face configuration capacitor along electronic installation, so that the anode electrode of described outer dress face and described capacitor is parallel, wherein, described capacitor alternative stacked anode electrode and cathode electrode also form writing board shape.Described outer dress face is the medial surface of outer dress, makes the termination contact of circuit block be set at described capacitor and lip-deep electrode described medial surface side opposition side, and described capacitor is connected to corresponding described circuit block.

According to the structure of scheme 1, in electronic installation, the capacitor that has alternative stacked anode electrode and cathode electrode, writing board shape to form can be realized thin typeization.Thus, parallel substantially with anode electrode for outer dress face, if this capacitor is disposed along outer dress face, then shape can thin typeization.

And,, also can provide installation method with the capacitor in the electronic installation of electronic installation thin typeization even be provided with the situation of large value capacitor according to the structure of scheme 6.

According to the present invention,, also can carry out thin typeization even be provided with the situation of large value capacitor.

Description of drawings

Fig. 1 is the stereogram of the Electrofax of the expression embodiment of the invention 1.

Fig. 2 is the profile schematic diagram that is used for illustrating the capacitor of the Electrofax that is applied in Fig. 1.

Fig. 3 is the profile of installation method that is used for the capacitor of key diagram 2.

Fig. 4 is the plane graph and the profile of electrode that is used for the capacitor of key diagram 2.

Fig. 5 is the connection layout of peripheral circuit of the capacitor of presentation graphs 2.

Fig. 6 is the connection layout of the peripheral circuit that is applied in the capacitor in the Electrofax of the expression embodiment of the invention 2.

Fig. 7 is the connection layout of the peripheral circuit that is applied in the capacitor in the Electrofax of the expression embodiment of the invention 3.

Fig. 8 is the connection layout of the peripheral circuit that is applied in the capacitor in the Electrofax of the expression embodiment of the invention 4.

Embodiment

Below, suitably with reference to accompanying drawing in detail, embodiments of the invention are described in detail.

[embodiment 1]

(1) structure of embodiment 1

Fig. 1 is the stereogram of Electrofax of the portable electronic apparatus of the expression embodiment of the invention 1.This Electrofax 1 forms with the rectangular shape of growing crosswise of thin thickness.From face side, Electrofax 1 in upper end side, is provided with viewfinder window 3, photoflash lamp 4 at its distolateral lens 2 that are provided with of growing crosswise, near lens 2, roughly be provided with microphone 5, auto heterodyne lamp 6 in central authorities.Thus, Electrofax 1 is in the central authorities from face side, and the position except left side, upper end side can form any zone that is exposed to outside electronic unit is not set.Electrofax 1 also in the upper surface, is provided with shutter release button 7, mains switch 8, and side is provided with liquid crystal panel, various operation keyss etc. overleaf.

Like this, Electrofax 1 is by the front casing 10A of the face side that is provided with lens 2 grades, form outer dress with the opposed back side of casing 10A, this front casing 10B, in these casings 10A and 10B, holds circuit board that various electronic units have been installed etc.Like this, among the front casing 10A of Electrofax 1 dress outside forming,, except left side, upper end side,, large value capacitor 11 is set along any medial surface that is exposed to the zone of outside electronic unit is not set from the central authorities of face side.

Here, the basic structure of capacitor in the middle of dielectric 15 is interposed in, and makes electrode 16A and 16B opposed shown in Fig. 2 (A).In the past, in electrolytic capacitor as large value capacitor, shown in Fig. 2 (B), with lamination successively form the cathode electrode 16B of the anode electrode 16A of the dielectric film of oxide-film, the electrolytic paper 17 that comprises electrolyte, aluminium foil laminated body form elongated sheet, this laminated body of reeling also forms cylindrical shape with it.Thus, in large value capacitor in the past, with the thickness attenuation of these laminated body, and also narrowed width, can in addition, the area of laminated body be increased the shape miniaturization, can increase capacitance.In this case, in this existing capacitor, the diameter of the width * cylindrical shape of its laminated body is roughly outer shape, and the thickness of the device of installation is restricted because of its width or diameter.

On the contrary; the large value capacitor 11 that is applied in this Electrofax 1 is electrolytic capacitors; shown in Fig. 2 (C) and Fig. 2 (D); electrolytic paper is interposed in middle (not shown); the capacitance part of alternative stacked necessity, anode electrode 16A, the cathode electrode 16B of sheet material; seal by screening glass, integral body forms with writing board shape.Thus, this capacitor 11 is compared with the past, and the projected area of electrode 16A and 16B is obviously increased, and this segment thickness can be extremely thin.

With capacitor 11 following formation: its both sides' electrode 16A is connected in inside respectively with 16B, and is connected to outside terminal 18A and 18B (Fig. 2 (D)), can be connected to the circuit block of requirement via outside terminal 18A and 18B.With capacitor 11 following formation: its outside terminal 18A and 18B form rectangular shape, are arranged on simultaneously on the face of such writing board shape, with face general planar on every side.

Corresponding with it, in the casing 10A of front (Fig. 1),, except left side, upper end side, form by smooth face any medial surface that is exposed to the zone of outside electronic unit is not set, so that can dispose this capacitor 11 along it from the central authorities of face side.Thus, configuration capacitor 11 does not form useless space.In addition, step that will be used to locate or projection are formed on corresponding to the position around the capacitor 11, or are formed on the part of its corresponding position, thus, and can be simply and the location keeps this writing board shape reliably capacitor 11.

That is, in Electrofax 1, as shown in Figure 3, the medial surface of capacitor 11 along front casing 10A kept after Fig. 1 dissectd by the A-A line, so that it is opposed that the medial surface of the face of outside terminal 18A and 18B one side and front casing 10A is not set.In the present embodiment, by the bonding of binding agent, capacitor 11 is arranged on the medial surface of casing 10A.Therefore, capacitor 11 is supplied with like this: on the face that electrode 18A and 18B one side are not set of capacitor 11, after the adhesive stripe-coating, stripping film bonds in advance.

In addition, in Electrofax 1, in the assembly process of front casing 10A, the stripping film that this binding agent of dismantling connects, with capacitor 11 by on the medial surface that is pressed in casing 10A, thereby capacitor 11 can be installed on the casing 10A.Then, in Electrofax 1 (Fig. 3), the circuit board 22 that various electronic units 21 have been installed is installed on the casing 10A, so that itself and capacitor 11 almost parallels are opposed, be arranged on the terminal 23A of capacitor 11 1 sides of this substrate 22 and 23B the electrode 18A and the 18B of contacting capacitor 11 respectively, capacitor 11 can be connected to the circuit block that is formed in the circuit board 22.

That is, Fig. 4 is front elevation (Fig. 4 (A)) and the side view (Fig. 4 (B)) that the position of terminal 23A shown in the symbol B and 23B among Fig. 3 is amplified expression.Terminal 23A and 23B form identical shaped, for example rubber-like sheet metals such as phosphor bronze sheet are carried out bending machining, in the present embodiment, form the section V-shape.Thus, terminal 23A and the 23B pressing force by appropriateness under integrally bending is pressed against on the electrode 18A and 18B of capacitor 11, thus, and with its contact electrode 18A and 18B reliably.

Electrofax 1, after casing 10B goes up various electronic units, circuit board etc. is installed equally overleaf, the circuit board 22 of front casing 10A side and the circuit board of back side casing 10B side are connected, and these fronts casing 10A and back side casing 10B are by integrated assembling.Thus, Electrofax 1 does not resemble in the past because of large value capacitor 11 is subjected to thickness limits, the global shape thin typeization.

Fig. 5 is the block diagram of the peripheral circuit of the capacitor 11 in this Electrofax 1 of expression.In this Electrofax 1, the battery 25 of dismantled and assembled maintenance is connected to the circuit board 22 of front casing 10A one side, the power supply of built-in secondary cell 26 in these circuit board 22 these batteries 25 of supply.This circuit board 22 is supplied with this power supply via electrolytic capacitor C1, by-pass capacitor C2 to not shown power circuit, supplies with the power supply that is used for its action to each circuit block by this power circuit.Have, in Fig. 5, symbol Rs is the internal resistance of secondary cell 26 again.

And circuit board 22 is by the control of not shown controller, and response user's shutter operation begins the action of DC-DC converter 28, and the power supply of being supplied with by battery 25 generates the high voltage that is used for photoflash lamp.Circuit board 22 charges to large value capacitor 11 lentamente by this high voltage, and the terminal voltage of capacitor 11 is slowly risen.Circuit board 22 drives photoflash lamp 4 by the discharge of the electric power of savings in this capacitor 11, thus, can throw light on to the subject that requires.

(2) action of embodiment

In above structure, the capacitor 11 (Fig. 2) that is applied in the Electrofax 1 is interposed in the centre with electrolytic paper, the capacitance part of alternative stacked necessity, anode electrode 16A, the cathode electrode 16B of sheet material, and form writing board shape.Thus, in the electronic installation that this capacitor 11 is installed,, compare with being provided with in the past the situation of the capacitor of shape for example along the outer dress of device, promptly dispose this capacitor 11 along medial surface, can be with the obvious attenuation of the thickness of electronic installation.

That is, in electronic installation, situation roughly is that the casing medial surface forms smooth face usually, in this smooth face, and other electronic units between be provided with the space.Thus,, effectively utilize the space in this space, then can effectively utilize the inner space of device, can dispose large value capacitor if capacitor 11 is formed writing board shape.Thus, the restriction that can not caused by capacitor thickness, with the thickness attenuation of device, and, for the situation that any capacitor is not set, can dispose this capacitor and do not increase the inner space basically.

In addition, because in such space, be the inboard bigger position of area of outer dress along device, particularly in carry-along electronic installation, integral body forms the plate shape, compare with the size that device is whole, because the area of such flat site is big, even with capacitor 11 thin typeizations, in capacitor 11, also enough electrode areas can be guaranteed, enough capacitances can be guaranteed thus.

That is, in the capacitor of in the past cylindrical shape,, highly be H1 if the base area of cylindrical shape is S1, then capacitance roughly is directly proportional with S1 * H1.On the contrary, in capacitor 11, when the area of installable flat site is S2, have identical capacitance as guaranteeing with the capacitor of conventional example, thickness is S1 * H1/S2.Thus, for example, if S1/S2=1/10, then the thickness of capacitor integral body is 1/10, thus, in general device, can guarantee to obtain big ratio, and is compared with the past in capacitor 11, thickness is fallen sharply and guarantees enough capacitances.

By such laminated construction, when making capacitor 11, can raise the efficiency by so-called edge effect, can increase capacitance thus with respect to volume.Thus, can be applicable to small-sized carrying device etc., can be used for transient current and change in the big circuit etc.Specifically, big although it is used for the instantaneous electric current that flows through, the common little circuit of operating current, or do not flow through the circuit of so common operating current basically.

By can carry out thin typeization like this, can make and possess flexible capacitor 11.Thus, even do not have at the casing medial surface under the situation of tabular surface, if cylindrical surface, then configurable capacitor 11 also effectively utilizes the inner space of device.Have, even lose under the flexible situation in the thickness thickening, Zhuan medial surface is under the situation of cylindrical surface outside, also can be along the crooked capacitor 11 of making of this medial surface again.In this case, also can effectively utilize the inner space of device and dispose capacitor 11.Thus, in the present embodiment, even be provided with the situation of large value capacitor, also can be with the electronic installation thin typeization.

In addition, with capacitor 11 following making: on the face parallel, terminal 18A and the 18B of these anode electrodes 16A, cathode electrode 16B is set, so that can be connected to the circuit block of requirement via these terminals 18A and 18B with anode electrode 16A.Thus, in capacitor 11, for example it is configured in rear flank in the outer dress of device, can be connected, can simplify assembling operation (Fig. 3) with circuit board.In addition, even be configured in the inboard situation of outer dress of device like this, although have color in a way as the intrinsic special-purpose member of the device of installing, if but connect by terminal like this, for example by according to the device height etc. of the terminal that is provided with of selective interconnection substrate-side respectively, even the situation that the gap thickness between the circuit board is different respectively also can be used capacitor 11 jointly between these devices, can improve the versatility of capacitor 11.In addition, even capacitor 11 because of the vibrative situations such as impact of casing outside, also can guarantee reliably and being connected of substrate, thus, can improve reliability.

In the present embodiment, capacitor 11 is provided with on the face that does not dispose its electrode 18A and 18B one side and supplies with binding agent, stripping film.In the manufacturing process of Electrofax 1 (Fig. 3), in the assembly process of front casing 10A, after this stripping film is peeled off, medial surface at this front casing 10A, be not to be provided with on the casing face side in the zone of any electronic unit to push capacitor 11, capacitor 11 is installed among the casing 10A.Then, with the circuit board 22 that various electronic units 21 the have been installed casing 10A that packs into, at this moment, the terminal 23A and the 23B of capacitor 11 1 sides by being arranged on circuit board 22 are connected to capacitor 11 circuit block (Fig. 3 and Fig. 4) that is formed in the circuit board 22.And, and then with the back side casing 10B that is assembled combination, finish assembling (Fig. 1).

In Electrofax 1 (Fig. 5), this capacitor 11 is connected to DC-DC converter 28 as the drive circuit of photoflash lamp 4, be used for as the driving of the photoflash lamp of luminous element charging with power supply, thus, in Electrofax 1, even the situation of the large value capacitor that the luminous element that installing provides such drives also can be with the global shape thin typeization.Thus, in this Electrofax 1, portability is in various occasions, for example in dusk of luminance shortage, night, room etc. in, the subject that can come photographing request by sufficient light quantity.

Have, in the photoflash lamp in being applied to common Electrofax, adopting the consumed energy when luminous is 7.8[Wsec again] about, arc length is 13.5[mm] about, minimum luminous voltage is smaller or equal to 240[V] photoflash lamp.Make such photoflash lamp 4 with rated value when luminous, in capacitor 11, needing its capacity is 42～250[μ F], withstand voltage for 315[V] about, even the capacity of this degree, withstand voltage capacitor, when the capacitor 11 of present embodiment, also more unfertile land is made.

In addition, by such capacitor 11 being arranged on the inboard of outer dress, in Electrofax 1, also can expect to reduce unwanted radiation by this capacitor 11.

(3) effect of embodiment

According to above structure, form capacitor by alternative stacked anode electrode and cathode electrode and by writing board shape, and dispose this capacitor along medial surface as the outer dress face of device, and even the situation of large value capacitor is set, also can be with the electronic installation thin typeization.

In addition, by terminal is set, and make this terminal of termination contact of circuit board in capacitor, capacitor is connected to corresponding circuit block, from simplifying assembling operation.

In addition, this capacitor is the capacitor that temporarily drives electronic unit by the discharge of charging power, and this electronic unit is light-emitting component, thereby even be provided with the situation that is used for required large value capacitor such as driven light-emitting element, also can be with the electronic installation thin typeization.

[embodiment 2]

Fig. 6 is a connection layout of representing the capacitor that adopts in the Electrofax of the embodiment of the invention 2 and corresponding circuit block simultaneously.In this Electrofax, same with the foregoing description 1, large value capacitor 11 is installed, this capacitor 11 is applied to circuit block shown in Figure 6.Have, the Electrofax of present embodiment except the difference of the structure of Fig. 6, constitutes in the same manner with the Electrofax of embodiment 1 again.

That is, in this Electrofax, by being installed in the DC-DC converter 38 on the circuit board 22, the power supply of battery 25 is boosted, generate the power supply of the voltage that requires, capacitor 11 is used for the level and smooth of this power supply.

As present embodiment,, also can obtain the effect identical with embodiment 1 even be provided with the situation that is used for level and smooth large value capacitor.

[embodiment 3]

Fig. 7 be represent the embodiment of the invention 3 simultaneously be applied to the capacitor in the Electrofax and the connection layout of corresponding circuit block.In this Electrofax, same with the foregoing description 1, large value capacitor 11 is installed, this capacitor 11 is applied in the circuit block shown in Figure 7.Have, the Electrofax of present embodiment the relevant structure difference, has the structure identical with the Electrofax of embodiment 1 in Fig. 7 again.

That is, in this Electrofax, adopt capacitor 11, relax the decline of the supply voltage that transient current causes in the decoupling of the power supply of the battery 25 that is used for being input to circuit board 22.

As present embodiment, be used for the capacitor of decoupling, even the situation that the supply voltage that the mitigation transient current causes descends also can obtain effect similarly to Example 1.

[embodiment 4]

Have again, in the above-described embodiments, discussed terminal by the section V-shape, capacitor is connected to situation on the substrate, but the invention is not restricted to this, the shape of terminal can adopt different shape, in addition, also can be elasticity be set from one's body, and guarantees elasticity by substrate flexible at terminal.

In addition, in the above-described embodiments, discussed capacitor has been connected to the situation of substrate via terminal, but the invention is not restricted to this, also can be widely used in situation about connecting etc. by lead-in wire.

In addition, in the above-described embodiments, discussed respectively a capacitor arrangements has been adorned the situation of medial surface outside, but the invention is not restricted to this, also a plurality of capacitors can be set simultaneously, and can overlap configuration.In addition, in this case, compare with Fig. 7, as shown in Figure 8, also the integrated compound capacitor 41 that forms of the capacitor of two kinds can be configured in this capacitor 41 on the outer dress medial surface with Fig. 6.

In addition, in the above-described embodiments, discussed and in the electrolytic capacitor of the anode electrode that forms deielectric-coating by oxide-film, electrolytic paper, cathode electrode, used situation of the present invention, but the invention is not restricted to this, for example can be widely used in the various electrolytic capacitors such as capacitor of electric double layers.

In addition, in the above-described embodiments, discussed respectively in the driving of photoflash lamp etc. the situation of capacitor is installed, but the invention is not restricted to this, for example, but extensive use will be by USB (Universal Serial Bus; USB) electric power of Gong Geiing is once stored to replenish in the situation etc. of the required transient current of hard disk starting, mainly is in the situation that large value capacitor is installed.

In addition, in the above-described embodiments, discussed the situation that disposes capacitor by the bonding of binding agent, but the invention is not restricted to this, for example when the bonding by binding agents such as epoxy resin is configured, keep being configured in situation on the casing by being arranged on pawl on the casing etc., and by be configured in situation on the casing etc. with casing integrally formed, can the various collocation methods of extensive use.

In addition, in the above-described embodiments, discussed the situation that disposes capacitor along the medial surface of outer dress, but the invention is not restricted to this, for example in the electronic installation of dismantled and assembled installation battery, on the face that its battery is installed, dispose the situation of capacitor etc., also can be configured on the lateral surface of outer dress.In addition, mainly be that capacitor is just passable along outer dress face configuration, also capacitor itself can be constituted the part of outer dress wall.

In addition, in the above-described embodiments, discussed situation about applying the present invention in the Electrofax, but the invention is not restricted to this, can be widely used in the various electronic installations that portable phone, PDA, video camera etc. carry out work by battery, and in the electronic installation of placed type etc.

The possibility of utilizing on the industry of the present invention is, can be applied to Electrofax, portable phone, Among the PDA etc.

Claims (6)

1. an electronic installation disposes its capacitor dress face outside it, so that the anode electrode of described outer dress face and described capacitor is parallel, wherein, described capacitor alternative stacked anode electrode and cathode electrode also form writing board shape,

It is characterized in that: described outer dress face is the medial surface of outer dress, makes the termination contact of circuit block be set at described capacitor and lip-deep electrode described medial surface side opposition side, and described capacitor is connected to corresponding described circuit block.

2. electronic installation as claimed in claim 1 is characterized in that: described capacitor relaxes the supply voltage decline that transient current causes.

3. electronic installation as claimed in claim 1 is characterized in that: described capacitor is used for level and smooth supply voltage.

4. electronic installation as claimed in claim 1 is characterized in that: described capacitor drives electronic unit by the discharge of the electric power of charging temporarily.

5. electronic installation as claimed in claim 4 is characterized in that: described electronic unit is a light-emitting component.

6. the installation method of a capacitor, along the outer dress face configuration capacitor of electronic installation, so that the anode electrode of described outer dress face and described capacitor is parallel, wherein, described capacitor alternative stacked anode electrode and cathode electrode also form writing board shape,

It is characterized in that: described outer dress face is the medial surface of outer dress, makes the termination contact of circuit block be set at described capacitor and lip-deep electrode described medial surface side opposition side, and described capacitor is connected to corresponding described circuit block.

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