JP5359695B2 - Electronic device manufacturing method and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately perform electrical connection to each of electronic components by means of one wiring member, even when positional deviation occurs in the plurality of electronic components arranged side by side in a specified direction. <P>SOLUTION: The flexible cable 13 includes: a connection part 13A in which a plurality of connection terminals are arranged; and two stand-up parts 13B and 13C disposed on both sides in a second direction perpendicular to a first direction, of the connection part 13A. The wires extending from the connection terminals of the connection part 13A are formed to extend to either of the two stand-up parts 13B and 13C, and a slit 15 is formed in the connection part 13A so as to extend to be located between piezoelectric actuators 12A and 12B, and the slit 15 is formed to extend toward the two stand-up parts 13B and 13C. The relative positions of the portions 13Aa and 13Ab located on both sides of the slit 15 are adjusted, thereafter, the connection terminals are connected to the electrodes. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  According to the present invention, an electronic component group in which a plurality of electronic components having a plurality of electrodes are arranged in a specific direction (first direction) and the plurality of electronic components in the electronic component group are electrically connected. The present invention relates to a method for manufacturing an electronic device having one wiring member and the electronic device.

  Conventionally, for example, a connection terminal of a flexible cable (wiring member) is bonded to an electrode of an actuator (electronic component) of an ink jet printer head (electronic device) and a driving voltage is applied ( For example, see Patent Document 1).

JP-A-7-227966 (FIG. 9)

  In such an ink jet printer head, when two or more actuators are arranged side by side in a specific direction for reasons such as increasing the resolution, a single flexible cable is used for each of the actuators arranged side by side. If an electrical connection is made, if the actuators are assembled out of position with respect to the cavity unit as a base, the positional relationship between the actuators will deviate. There is a possibility that the connection terminal may not be electrically connected well. In this case, if the actuator is assembled without being displaced with respect to the cavity unit, the manufacturing cost may be increased.

  On the other hand, assuming that the actuators are assembled with the positional relationship between the actuators deviating from each other, if a separate flexible cable is provided for each actuator so that the misalignment can be handled, As many actuators as necessary are required, resulting in high costs.

  If each flexible cable is to draw out a signal line at each end of the flexible cable, usually one IC chip is provided at each end in each pulling direction. As the number of cables increases, the number of IC chips also increases, which also causes an increase in cost.

  In the present invention, even when there is a positional shift in the electronic component of the electronic component group in which a plurality of electronic components having a plurality of electrodes are arranged in a specific direction (first direction), the electronic components Provided are an electronic device manufacturing method and an electronic device capable of accurately aligning one wiring member (for example, a flexible cable) connected to a component.

According to a first aspect of the present invention, an electronic component group in which a plurality of electronic components having a plurality of electrodes are arranged in a first direction is electrically connected to the plurality of electronic components in the electronic component group. An electronic device manufacturing method for manufacturing an electronic device having one wiring member, wherein the wiring member includes a plurality of connection terminals electrically connected to each of the plurality of electrodes of each electronic component; A wiring portion extending from the plurality of connection terminals, provided on both sides of the connection portion in which the plurality of electrode connection terminals are disposed, and a second direction orthogonal to the first direction of the connection portion. A pair of raised portions bent from the connecting portion, and the wiring is formed so as to be divided into one of the pair of raised portions and extending between the electronic components. Correspondingly before Is formed a slit extending in a second direction, the are those slits are formed extending from the connecting portion to the respective raised portion, positioning the electrode of the electronic component and the connection terminals in the connecting portion It has the positioning process to match, and the connection process which connects the said connection terminal and the said electrode, It is characterized by the above-mentioned.

According to this configuration, the slit extending in the second direction orthogonal to the first direction in which a plurality of electronic components are arranged side by side is formed in the connection portion of the wiring member so as to correspond between the electronic components. Is formed to extend from the connection portion to the rising portions, so that the connection terminal is aligned with the electrode of each electronic component in the alignment step, and then the connection terminal of the wiring member is connected to the electrode of the electronic component in the connection step. As a result, the connection terminals of the wiring members can be accurately aligned with the electrodes of each electronic component even if there is a positional shift or the like among the plurality of electronic components arranged side by side.

  According to a second aspect of the present invention, it is preferable that the wiring member is formed by bending each of the rising portions with respect to the connection portion.

  If it does in this way, since it becomes easy to move a connection part in the direction where a slit extends, position alignment of a connection terminal and an electrode of electronic parts in a connection part becomes easy at a position alignment process.

  According to a third aspect of the present invention, it is desirable that an end portion of the slit in each rising portion has a wide portion that is wider than the slit.

  In this way, the connection portion can be easily moved in a direction perpendicular to the direction in which the slit extends, so that the connection terminal and the electrode of the electronic component in the connection portion can be easily aligned. Become.

  In addition, as described in claim 4, the bent portion in which the rising portion is bent with respect to the connection portion may not be orthogonal to the slit.

  In this way, the bent portion formed by bending the rising portion with respect to the connecting portion is not perpendicular to the slit, and the connecting portion can be connected without providing a wide portion as in the invention of claim 3. Since the portion is easily movable in the first direction and the direction orthogonal to the first direction (second direction), the connection terminal and the electrode of the electronic component in the connection portion can be easily aligned.

  According to a fifth aspect of the present invention, the electronic component is an actuator connected to a droplet discharge head that discharges droplets, and the wiring member is connected to the wiring at each of the rising portions. This is suitable for a flexible cable provided with an IC chip. When the IC chip is provided on the flexible cable, the IC chip is difficult to deform, and therefore the flexible cable in the portion where the IC chip is attached does not move. Therefore, in order to align the connection terminal and the electrode of the electronic component in the connection portion, it is effective that the connection portion is formed with a slit extending in the second direction corresponding to each electronic component. It is.

In these cases, as described in claim 6, the wiring member is provided with power supply wiring on both sides of the slit, and the signal wiring to the connection terminal outside the power supply wiring. It is desirable to be provided. Here, the power supply system wiring is a wiring for supplying a constant voltage (for example, 0V or 20V) to the electrodes of the electronic component, and the signal system wiring is for driving the actuator to the electrodes of the electronic component. This is a wiring for supplying a so-called drive waveform that selectively applies a ground voltage and a constant positive voltage in order to achieve this.

  In this way, since the signal system wiring is provided at a position away from the slit, the signal system wiring can be created uniformly, and the electrical resistance of the signal system wiring can be kept uniform. it can.

According to a seventh aspect of the invention, an electronic component group in which a plurality of electronic components having a plurality of electrodes are arranged in a first direction and the plurality of electronic components in the electronic component group are electrically connected. An electronic device having one wiring member, wherein the wiring member extends from the plurality of connection terminals and a plurality of connection terminals electrically connected to each of the plurality of electrodes of each electronic component. A pair of wirings, and a pair bent from the connection part provided on both sides of the connection part in a second direction orthogonal to the first direction of the connection part. And the wiring is formed so as to be divided into one of the pair of rising portions and extended in the second direction corresponding to the connection between the electronic components. An extending slit is formed , Wherein the slit is one that is formed to extend from the connecting portion to the respective raised portion.

  In this way, since the electrical connection of the connection terminal of one wiring member to the electrodes of each of the electronic components arranged side by side is accurately performed, the function of the electronic component is reliably exhibited and the electronic Improve device reliability.

  In the present invention, as described above, an electronic component group in which a plurality of electronic components having a plurality of electrodes are arranged in a first direction is electrically connected to the plurality of electronic components in the electronic component group. In the method of manufacturing an electronic device having one wiring member, the wiring member is accurately aligned with respect to the electronic component even when the electronic component of the electronic component group is misaligned. Connection can be ensured.

1 is a perspective view of an ink jet printer in which an ink jet head (electronic device) to which the present invention is applied is used. It is a disassembled perspective view of the piezoelectric actuator which is an electronic component, and the flexible cable which is a wiring member. The flexible cable is shown, (a) is a plan view, (b) is a perspective view showing a bent state, and (c) is a plan view showing the state shown in FIG. 3 (b). It is a perspective view of a modification. It is explanatory drawing which shows the relationship between the wiring of a power supply system, the wiring of a signal system, and a slit. It is a perspective view of a modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, an inkjet printer 1 according to the present invention includes an inkjet head 3 (liquid medium) for recording on a recording paper P (recording medium) on a lower surface of a carriage 2 on which an ink cartridge (not shown) is mounted. A droplet discharge head) is provided. The carriage 2 is supported by a carriage shaft 5 and a guide plate (not shown) provided in the printer frame 4, and is configured to reciprocate in a direction B perpendicular to the conveyance direction A of the recording paper P. The recording paper P conveyed in the A direction from a paper supply unit (not shown) is introduced between a platen roller (not shown) and the ink jet head 3 and is ejected from the ink jet head 3 toward the recording paper P. As a result, predetermined recording is performed, and then the paper is discharged by the paper discharge roller 6.

  As shown in FIG. 2, the inkjet head 3 applies ejection energy for selectively ejecting ink in each pressure chamber to the upper side of the cavity unit 11 in which a plurality of pressure chambers are regularly formed. The piezoelectric actuator 12A and the (electronic component) piezoelectric actuator 12B (electronic component) are arranged side by side, and one flexible cable 13 (wiring member) for supplying a drive signal to the piezoelectric actuators 12A and 12B (electronic component group) is provided. ing. The piezoelectric actuators 12A and 12B are formed by laminating a plurality of piezoelectric material layers (a lead zirconate titanate (PZT) ceramic material having ferroelectricity) and are polarized in the thickness direction.

  The cavity unit 11 is provided with a common liquid chamber, a pressure chamber, a nozzle, and an ink supply hole 11a (not shown). The ink supply hole 11a is connected to the ink cartridge and communicates with the nozzle through a common liquid chamber and a pressure chamber. A plurality of pressure chambers are arranged in a row in the second direction in the cavity unit 11, and a plurality of rows of pressure chambers are arranged in the first direction.

  On the upper surfaces of the piezoelectric actuators 12A and 12B, a plurality of electrodes 21 provided for each pressure chamber and to which the drive signal is input are formed. Each electrode 21 has a connection electrode portion 21a, and each of the connection electrode portions 21a and a plurality of connection terminals (not shown) of the flexible cable 13 are electrically connected. That is, the connection terminal of one flexible cable 13 is connected to the electrodes of the two piezoelectric actuators 12A and 12B. And IC chip 14A, 14B (driver IC) which supplies the drive waveform mentioned later to the electrode 21 of piezoelectric actuator 12A, 12B through this flexible cable 13 is electrically connected.

  Although not specifically illustrated, the flexible cable 13 has a connection terminal electrically connected to each of the plurality of electrodes 21 of each of the piezoelectric actuators 12A and 12B, and wiring extending from the plurality of connection terminals. And IC chips 14A and 14B connected to these wirings, and a connecting portion 16 connected to a control board (not shown), and the plurality of connection terminals are arranged as shown in FIGS. The connecting portion 13A, and two rising portions 13B and 13C provided on both sides of the connecting portion 13A are provided. The rising portions 13B and 13C are formed by bending the connecting portion 13A. Although not specifically shown, the wiring extending from the connection terminal of the connecting portion 13A is formed to extend to one of the two rising portions 13B and 13C, and is provided in each rising portion 13B and 13C. Connected to the IC chips 14A and 14B. Wiring is further arranged from the IC chips 14A and 14B toward the connecting portion 16, the connecting portion 16 is connected to the control board, and a driving voltage and a driving signal are supplied from the control board to the IC chips 14A and 14B. In addition, a slit 15 extending in the second direction is formed between the piezoelectric actuators 12 </ b> A and 12 </ b> B in the connecting portion 13 </ b> A, and the connecting portion 13 </ b> A is disposed on both sides of the slit 15 by the slit 15. It is divided into two parts 13Aa and 13Ab. Furthermore, the slit 15 extends to not only the connecting portion 13A but also the two rising portions 13B and 13C. Here, L1 and L2 are bend lines that become boundaries between the connecting portion 13A and the rising portions 13B and 13C.

Based on the drive voltage and drive signal supplied from the control board, the IC chips 14A and 14B generate drive waveforms and supply the drive waveforms to the electrodes 21 of the piezoelectric actuators 12A and 12B. The piezoelectric actuators 12A and 12B are provided with power supply system electrodes that maintain a constant voltage (for example, 0 V or 20 V). The power supply system electrodes are connected to the piezoelectric actuator 12A.
, 12B are connected to the internal electrodes. When a drive waveform is input to the electrode 21, an electric field is generated between the electrodes and the piezoelectric actuators 12 </ b> A and 12 </ b> B are driven. Thereby, a pressure is applied to the ink in the pressure chamber, and the ink is ejected from the nozzle.

Next, a procedure for connecting the flexible cable 13 to each of the piezoelectric actuators 12A and 12B will be described.
(Positioning process)
The connection terminals of the portions 13Aa and 13Ab on both sides of the slit 15 of the connection portion 13A are aligned with the electrodes 21 (connection electrode portions 21a) of the piezoelectric actuators 12A and 12B, respectively. At this time, since the rising portions 13B and 13C are formed to be bent with respect to the connecting portion 13A, both the portions 13Aa and 13Ab can be individually moved in the second direction and connected to the electrode 21. It is easy to adjust the position of the terminal.
(Connection process)
After the alignment is completed, the connection terminal of the flexible cable 13 is connected to the electrodes 21 of the piezoelectric actuators 12A and 12B. Here, the two parts 13Aa and 13Ab may be connected together by aligning the positions of one part and then connecting by aligning the position of the other part. You may make it connect after adjusting.

  Both portions 13Aa and 13Ab are electrically connected in the state where the alignment with the piezoelectric actuators 12A and 12B is completed. Therefore, the alignment is performed with the same precision as when one flexible cable is connected to one piezoelectric actuator. It can be carried out.

  As described above, since both the parts 13Aa and 13Ab of the connecting portion 13A can be individually moved in the second direction, each of the plurality of piezoelectric actuators 12A and 12B arranged side by side can be displaced. The connection terminals of the flexible cable 13 can be accurately aligned with the electrodes 21 of the piezoelectric actuators 12A and 12B. Thereby, a connection terminal and the electrode 21 can be electrically connected reliably.

  In the above-described embodiment, the slit 15 extends in the second direction. However, as shown in the flexible cable 23 shown in FIG. 4, for example, the end portion of the slit 25 positioned at each of the rising portions 23B and 23C. On the other hand, wide portions 26A and 26B that are wider than the slit 25 may be provided.

  In this case, the width to the side edge of the flexible cable 23 is W1 in the portion where the slit 25 is provided, whereas the width to the side edge is W2 in the portion where the wide portions 26A and 26B are provided. Since the width is smaller than W1, the portion where the wide portions 26A and 26B are provided is narrow and easy to twist. As a result, both portions 23Aa and 23Ab can be easily moved in the width direction (first direction), and the position can be adjusted not only in the second direction but also in the width direction (first direction) perpendicular thereto. The range in which the positions of the parts 23Aa and 23Ab can be adjusted with respect to the electrodes 21 of the piezoelectric actuators 12A and 12B can be expanded. Thereby, alignment of a connection terminal and the electrode 21 can be performed still more accurately.

When such wide portions 26A and 26B are provided, as shown in FIG. 5, the flexible cable 23 is provided with power supply wiring S1 on both sides of the slit 25, and outside the power supply wiring S1. It is desirable that a signal system wiring S2 for providing a drive waveform for driving the piezoelectric actuators 12A and 12B is provided to the connection terminal connected to each electrode 21. As a result, the signal wiring S2 is disposed at a position away from the slit 25 and the wide portions 26A and 26B. Therefore, each signal wiring S1 is provided with the slit 25 and the wide portions 26A and 26B. All the signal lines S2 can be arranged linearly without being affected by the above. Therefore, the resistance of the wiring S2 of each signal system becomes substantially uniform, and it is possible to avoid occurrence of variations among the wirings S2. The number of signal lines S2 connected to the electrode 21 corresponding to one pressure chamber is one, whereas a plurality of power lines S1 are arranged, and the lines S1 are Since it is thicker than the wiring S2, it is unlikely that voltage variation will occur between the wirings S1, and even if the slit 25 and the wide portions 26A and 26B are provided, even if they are slightly damaged, they are more affected than the signal wiring S2. There are few.

  Further, as in the flexible cable 33 shown in FIG. 6, the bent portions (L11 and L12 are bent lines) in which the rising portions 33B and 33C are bent with respect to the connecting portion 33A are not orthogonal to the slit 35. That is, the folding lines L11 and L12 may be provided inclined with respect to the second direction in which the slit 35 extends.

  That is, if the fold lines L11 and L12 are inclined with respect to the slit 35, both the portions 33Aa and 33Ab can be displaced not only in the second direction in which the slit 35 extends but also in the first direction orthogonal thereto. Thus, the movable direction can be two directions. In this case, since the adjustment ranges required for the first direction and the second direction are usually different, the inclination angles of the folding lines L11 and L12 with respect to the second direction may be determined according to the different adjustment ranges. .

  In addition to the above, the present invention can be implemented with the following modifications.

(i) In the above embodiment, the flexible cable 13 (wiring member) is connected to each rising portion 1.
Although 3B and 13C are formed by being bent with respect to the connecting portion 13A, the pair of rising portions can be formed as a pair of rising portions bent from the connecting portion without being bent.

  (ii) In the above embodiment, the electronic device is an ink jet head, the nozzle row extends in the direction of pulling out the flexible cable 13, and the direction orthogonal to that direction is the scanning direction. The present invention can also be applied to the case where the nozzle row extends in a direction orthogonal to the drawing direction of the wiring member and the drawing direction of the wiring member is the scanning direction.

(iii) As in the above embodiment, in addition to connecting a wiring member to a plurality of actuators (electronic components) arranged side by side in one head (electronic device), a plurality of pieces arranged side by side The present invention can also be applied to the case where a wiring member is connected to each actuator of the head.

  (iv) In the embodiment described above, the adjustment range is widened by providing the wide portions 26A and 26B at the end of the slit 25. However, the adjustment can be performed by providing a slit or a cut that intersects the slit 25. The range can also be expanded.

1 Inkjet printer 3 Inkjet head (electronic device)
12A, 12B Piezoelectric actuator (electronic parts)
13, 23, 33 Flexible cable 13A Connection part 13B, 13C Rising part 14A, 14B IC chip 15, 25, 35 Slit 21 Electrode 21a Connection electrode part 26A, 26B Wide part L1, L2, L11, L12 Bending line S1 Power supply system Wiring S2 Signal wiring

Claims (7)

An electronic component group in which a plurality of electronic components having a plurality of electrodes are arranged in a first direction; and a wiring member to which the plurality of electronic components in the electronic component group are electrically connected. An electronic device manufacturing method for manufacturing an electronic device, comprising:
The wiring member includes a plurality of connection terminals that are electrically connected to the plurality of electrodes of each electronic component, and wirings that extend from the plurality of connection terminals, and the plurality of connection terminals are disposed. And a pair of rising parts bent from the connection part provided on both sides in a second direction orthogonal to the first direction of the connection part,
The wiring is formed to extend in one of the pair of rising portions, and a slit extending in the second direction is formed in the connection portion so as to correspond between the electronic components. Is formed to extend from the connection portion to each of the rising portions,
A method of manufacturing an electronic device, comprising: an alignment step of aligning the connection terminal in the connection portion and the electrode of the electronic component; and a connection step of connecting the connection terminal and the electrode. 2. The electronic component according to claim 1, wherein each of the rising portions of the wiring member is bent with respect to the connection portion.
3. The method of manufacturing an electronic device according to claim 1, wherein an end portion of the slit in each rising portion includes a wide portion that is wider than the slit. 4.
The method for manufacturing an electronic device according to any one of claims 1 to 3, wherein a bent portion in which the rising portion is bent with respect to the connection portion is not orthogonal to the slit.
The electronic component is an actuator connected to a droplet discharge head for discharging droplets,
5. The electronic device according to claim 1, wherein the wiring member is a flexible cable provided with an IC chip to which the wiring is connected in each of the rising portions. Production method.
6. The wiring member according to claim 5, wherein a power supply system wiring is provided on both sides of the slit, and a signal system wiring to the connection terminal is provided outside the power supply system wiring. Electronic device manufacturing method.
An electronic component group in which a plurality of electronic components having a plurality of electrodes are arranged in a first direction; and a wiring member to which the plurality of electronic components in the electronic component group are electrically connected. An electronic device,
The wiring member includes a plurality of connection terminals that are electrically connected to the plurality of electrodes of each electronic component, and wirings that extend from the plurality of connection terminals, and the plurality of connection terminals are disposed. And a pair of raised portions bent from the connection portions provided on both sides in a second direction orthogonal to the first direction of the connection portions, and the wiring is the pair And a slit extending in the second direction correspondingly between the electronic components is formed in the connection portion, and the slit extends from the connection portion. An electronic device, wherein the electronic device is formed to extend to each of the rising portions.

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