WO2019008644A1

WO2019008644A1 - Display/operation device

Info

Publication number: WO2019008644A1
Application number: PCT/JP2017/024386
Authority: WO
Inventors: 琢磨青島
Original assignee: 三菱電機株式会社
Priority date: 2017-07-03
Filing date: 2017-07-03
Publication date: 2019-01-10
Also published as: CN110800079B; JP6695505B2; CN110800079A; JPWO2019008644A1

Abstract

This invention comprises: a substrate (201); a plurality of operation units (405, 407, 409, 411) which are touch sensors comprising touch sensor electrodes (202, 204, 206, 208) arrayed on one surface of the substrate (201); a plurality of display units (406, 408, 410) comprising light-emitting units (203, 205, 207) which change lighting state in association with a touch operation of the operation units (405, 407, 409, 411) and are arranged on the one surface of the substrate (201) between the plurality of touch sensor electrodes (202, 204, 206, 208); and a touch sensor control unit (214) which detects a touch operation of the operation units (405, 407, 409, 411) and changes the lighting state of the light-emitting units (203, 205, 207), said touch sensor control unit (214) being disposed on the other surface of the substrate (201) at a position that is in the middle section of the array of touch sensor electrodes (202, 204, 206, 208) and that does not overlap with the touch sensor electrodes (202, 204, 206, 208).

Description

Display operation device

The present invention relates to a display and operation device having an operation unit including a touch sensor and a display unit whose display content changes in conjunction with a touch operation on the operation unit.

In the capacitive touch sensor, a button is formed of an electrode, and a change in capacitance of the electrode is detected to detect that the button is pressed. Hereinafter, the electrode which comprises the button of a touch sensor is called a touch sensor electrode. In recent years, capacitive touch sensors have been employed in the operation unit of many electric machine instruments. The capacitive touch sensor can configure the operation unit on a flat panel, and thus can improve the design of the mounted electric machine device. In addition, the capacitive touch sensor can reduce the cost by reducing the number of structural components of the mounted electric machine tool.

As a user interface of the electric machine instrument, a display operation device is used in which an operation unit and a display unit whose display content changes in conjunction with a touch operation on the operation unit are arranged side by side. The display operation device can display the state of the electric machine instrument on the display unit.

In general, the touch sensor electrode is configured by bonding indium tin oxide (ITO) or silver paste to a material such as acrylic or resin film. As disclosed in Patent Document 1, the reliability of the touch sensor may be improved by using a conductive rubber gasket in an electric machine requiring heat resistance such as an electromagnetic cooker. .

JP, 2016-81818, A

The capacitive touch sensor has a distance restriction in the wiring connected to the touch sensor electrode and the touch sensor control unit that determines the touch operation. When using a transparent electrode sheet, take out the wiring from any position of the transparent electrode sheet and connect it to the substrate on which the touch sensor control unit is mounted, the wiring length between the touch sensor electrode and the touch sensor control unit is long Become. Therefore, in the display / operation device in which the operation unit and the display unit are alternately arranged, when the area of the display unit is large, it may be difficult to satisfy the restriction of the wiring length.

On the other hand, in the case of using a gasket, if it is an elongated design, wiring from the touch sensor control unit to the electrodes of each touch sensor becomes difficult. The wiring between the touch sensor control unit and the electrodes of each touch sensor should be such that parasitic capacitances do not occur between the wirings, between the electrodes and the wiring, between other circuit patterns, or between components and the wiring. It is necessary to secure the distance. In the display / operation device, since wiring is also required in the display unit, it may be difficult to satisfy distance constraints when mounting components such as electrodes, wiring patterns and touch sensor control units are arranged on an elongated substrate when using a gasket is there.

The present invention has been made in view of the above, and an object of the present invention is to obtain a display / operation device that easily meets the restrictions of wiring even if the operation unit and the display unit are alternately arranged.

In order to solve the problems described above and to achieve the object, a display operation device according to the present invention includes a substrate and a plurality of operation units that are touch sensors including touch sensor electrodes arranged on one surface of the substrate. A plurality of display units provided with light emitting units disposed on one surface of the substrate between the plurality of touch sensor electrodes and whose lighting state changes in synchronization with the touch operation on the operation unit; and the other of the substrates A touch sensor control unit which is disposed on a surface and does not overlap the touch sensor electrode, detects a touch operation on the operation unit, and changes the lighting state of the light emitting unit. The touch sensor control unit is disposed in the middle of the row of touch sensor electrodes.

The display operation device according to the present invention has an effect that it is easy to satisfy the restriction of wiring even if the operation unit and the display unit are alternately arranged.

The figure which shows the structure of the display operation apparatus based on Embodiment 1 of this invention. An enlarged view of the display / operation unit of the display / operation device according to the first embodiment The figure which shows the structure of the operation display part of the display operation apparatus which concerns on Embodiment 1. The figure which shows the components arrangement | positioning of the surface of the board | substrate of the display operation apparatus which concerns on Embodiment 1. The figure which shows the components arrangement | positioning of the board | substrate back surface of the display operation apparatus which concerns on Embodiment 1. FIG. 6 is a diagram showing the arrangement of components and wiring patterns mounted on a substrate of the display operation device according to Embodiment 1; The figure which shows the restriction of wiring on the baseplate of the display operation device which relates to the form 1 of execution The figure which shows arrangement of the components and wiring which were mounted in the substrate of the display operation device concerning Embodiment 2 of the present invention. A figure showing a modification of a display operation part of a display operation device concerning Embodiment 1 and 2.

Hereinafter, a display and operation apparatus according to an embodiment of the present invention will be described in detail based on the drawings. The present invention is not limited by the embodiment.

Embodiment 1
FIG. 1 is a diagram showing a configuration of a display and operation apparatus according to Embodiment 1 of the present invention. FIG. 2 is an enlarged view of the display / operation unit of the display / operation device according to the first embodiment. FIG. 2 is an enlarged view of a portion A in FIG. The display operation device 10 is mounted on an electric machine instrument and used for a user interface. The display operation device 10 includes a

design surface panel

401, 402 and a display operation unit 403 embedded in the

design surface panel

401, 402. In the display operation device 10 shown in FIG. 1, the display operation unit 403 is vertically long, but may be horizontally long. The

design surface panels

401 and 402 may double as a housing of the electric machine instrument on which the display operation device 10 is mounted.

The display operation unit 403 is a display unit whose display content changes in conjunction with touch operations on the

operation units

405, 407, 409, and 411, which are capacitive touch sensors, and the

operation units

405, 407, 409, and 411. 406, 408 and 410 are alternately arranged. The number of operation units and display units is an example.

FIG. 3 is a diagram showing the structure of the operation display unit of the display operation device according to the first embodiment. FIG. 3 shows a cross section taken along the line III-III in FIG. FIG. 4 is a diagram showing the arrangement of components on the surface of the substrate of the display operation device according to the first embodiment. FIG. 5 is a diagram showing the arrangement of components on the back surface of the substrate of the display operation device according to the first embodiment. A light emitting unit 203 whose lighting state changes in conjunction with a touch operation on the

touch sensor electrodes

202, 204, 206, and 208 which are electrodes constituting a touch sensor, and

operation units

405, 407, 409, and 411 is provided on the substrate 201. A touch sensor control unit 214 is mounted that detects touch operations on the

operation units

205 and 207 and the

operation units

405, 407, 409, and 411, and changes the lighting state of the

light emitting units

203, 205, and 207. The change of the lighting state includes the change of the blinking pattern in addition to the switching of lighting, extinguishing and blinking. The change in the lighting state may be a change in color emitted by the light emitting unit. The

touch sensor electrodes

202, 204, 206, and 208 and the

light emitting units

203, 205, and 207 are mounted on one surface of the substrate 201, and the touch sensor control unit 214 is mounted on the other surface of the substrate 201. . Hereinafter, the side on which the

touch sensor electrodes

202, 204, 206, and 208 and the

light emitting units

203, 205, and 207 are mounted is referred to as the front surface of the substrate 201, and the side on which the touch sensor control unit 214 is mounted is referred to as the back surface of the substrate 201.

The

operation units

405, 407, 409, and 411 are electrostatic capacitive touch sensors including the

touch sensor electrodes

202, 204, 206, and 208 arranged on the surface of the substrate 201. The

operation units

405, 407, 409, and 411 are formed in portions where the

touch sensor electrodes

202, 204, 206, and 208 are disposed. The

display units

406, 408, and 410 are formed in the portion where the

light emitting units

203, 205, and 207 are disposed.

The

light emitting units

203, 205, and 207 are disposed between the

touch sensor electrodes

202, 204, 206, and 208. The display content on the

display units

406, 408, and 410 changes as the lighting state of the

light emitting units

203, 205, and 207 changes. The touch sensor control unit 214 is mounted not on the back side of the position where the

touch sensor electrodes

202, 204, 206, and 208 are mounted, but at a position where the distance between the

touch sensor electrodes

202, 204, 206, and 208 can be secured. There is. Specifically, the touch sensor control unit 214 is mounted on the back side of the substrate 201 and on the back side of the position where the light emitting unit 205 is mounted. That is, the touch sensor control unit 214 is mounted at an intermediate position between the touch sensor electrode 202 at one end of the row of

touch sensor electrodes

202, 204, 206, and 208 and the touch sensor electrode 208 at the other end. That is, the touch sensor control unit 214 is disposed in the middle of the row of

touch sensor electrodes

202, 204, 206, and 208. The middle portion of the row of

touch sensor electrodes

202, 204, 206, and 208 is a portion between the touch sensor electrode 202 at one end of the row and the touch sensor electrode 208 at the other end. Therefore, although the touch sensor control unit 214 is disposed at the center of the row of

touch sensor electrodes

202, 204, 206, and 208 here, the touch sensor control unit 214 may be disposed at a portion other than the center of the row .

The

touch sensor electrodes

202, 204, 206, and 208 and the panel 209 are in close contact with each other without a gap via the bracket 210. The panel 209 is formed of a material capable of displaying touch sensor buttons. The material of the panel 209 may be acrylic, but is not limited thereto.

The

touch sensor electrodes

202, 204, 206, and 208 are arranged in a row, and the

touch sensor electrodes

202, 204, 206, and 208 are arranged in order from one end side to the other end side of the row.

The touch sensor control unit 214 is a package in which terminals are arranged on four sides like a QFP (Quad Flat Package), and the four sides of the package have an inclination with respect to the side of the substrate 201. Although 45 degrees can be mentioned as inclination with respect to the side of the board | substrate 201 of the four sides of the package of the touch sensor control part 214, limitation is not carried out to this angle.

FIG. 6 is a diagram showing the arrangement of components and a wiring pattern mounted on the substrate of the display operation device according to the first embodiment. The touch sensor control unit 214 is connected to the touch sensor electrode 202 via a touch sensor electrode wiring 510 formed toward one end side of the row of the

touch sensor electrodes

202, 204, 206, and 208. The touch sensor control unit 214 is connected to the touch sensor electrode 204 via the touch sensor electrode wiring 511 formed toward one end side of the row of the

touch sensor electrodes

202, 204, 206, and 208. The touch sensor control unit 214 is connected to the touch sensor electrode 206 via a touch sensor electrode wiring 513 formed toward the other end side of the row of the

touch sensor electrodes

202, 204, 206, and 208. The touch sensor control unit 214 is connected to the touch sensor electrode 208 via a touch sensor electrode wiring 514 formed toward the other end side of the row of the

touch sensor electrodes

202, 204, 206, and 208. The touch sensor control unit 214 is connected to the

light emitting units

203 and 207 via the light emitting

unit wirings

504 and 506.

The touch

sensor electrode wirings

510, 511, 513, and 514 connecting the touch sensor control unit 214 and the

touch sensor electrodes

202, 204, 206, and 208 are one side of the row of

touch sensor electrodes

202, 204, 206, and 208. The light emitting

unit wirings

504 and 506, which connect the touch sensor control unit 214 and the

light emitting units

203 and 207, are formed on the other side of the row of

touch sensor electrodes

202, 204, 206, and 208. There is. By mounting the touch sensor control unit 214 on the substrate 201 in a state where each side is inclined to the side of the substrate 201, the touch

sensor electrode wiring

510, 511 is directed from the land to which the terminal of the package is connected to the side of the substrate 201. , 513, 514 and the light emitting unit wirings 504, 506 can be arranged, so that the wiring efficiency can be improved, and the display operation device 10 can be miniaturized.

The touch sensor peripheral circuit 512 is a circuit necessary for the touch sensor control unit 214 to determine the threshold of the touch sensor, and includes elements such as a capacitor and a resistor. The touch sensor peripheral circuit 512 is disposed between the touch sensor electrode wiring 510 and the touch

sensor electrode wirings

513 and 514 and adjacent to the touch sensor control unit 214.

A ground pattern 509 is disposed closer to the peripheral edge of the substrate 201 than the touch

sensor electrode wirings

510, 513, and 514. The ground pattern 509 may cover four sides or any side of the substrate 201.

The ground pattern 509 is extended from the touch sensor peripheral circuit 512.

FIG. 7 is a diagram showing the restriction of the wiring on the substrate of the display operation device according to the first embodiment. Note that the

touch sensor electrodes

206 and 208, the

light emitting units

205 and 207, and the touch

sensor electrode wirings

513 and 514 are not illustrated in order to avoid the description being complicated. The touch sensor control unit 214 and the

touch sensor electrodes

202 and 204 are electrically connected via the touch

sensor electrode wirings

510 and 511. The light emitting unit 203 is electrically connected to the touch sensor control unit 214 via the light emitting unit wiring 504. The touch sensor peripheral circuit 512 disposed adjacent to the touch control unit 214 is electrically connected to the touch sensor control unit 214 via the peripheral circuit wiring 301 in order to determine the touch threshold. It is necessary to provide a distance constraint between the touch

sensor electrode wires

510 and 511 and the

touch sensor electrodes

202 and 204. If the stray capacitance is large, the capacitance change when a human finger touches can not be detected, so there is a necessary distance, and the distance shown below is taken. In addition, the distance shown here is an example, and this invention is not limited to this. The distance B between the

touch sensor electrodes

202 and 204 is a distance of 5 mm or more. A distance C between the touch

sensor electrode wires

510 and 511 and the light emitting portion 203, a distance D between the touch

sensor electrode wires

510 and 511 and the light emitting portion wire 504, and a distance between the touch sensor peripheral circuit 512 and the light emitting portion wire 504 The distance E between the touch sensor peripheral circuit 512 and the touch

sensor electrode wirings

510 and 511 is 2 mm or more. In addition to this, when there is a power supply for a touch sensor control unit or a ground peripheral circuit pattern, a distance of 2 mm or more is secured with respect to other parts.

As described above, there may be a problem that the wiring design can not be established and can not be configured on a small substrate due to the restriction between the wirings. Further, in the touch

sensor electrode wires

510 and 511, when the wire length is too long, the floating capacitance is increased, so that the wire length is restricted to 150 mm or less.

Although the touch sensor control unit 214 is not generally mounted between the touch sensor electrodes because a distance restriction is caused due to stray capacitance with the

touch sensor electrodes

202 and 208, the first embodiment is related to the present invention. In the display operation device 10, since the touch sensor control unit 214 is mounted on the surface opposite to the

touch sensor electrodes

202, 204, 206, and 208, the distance constraint can be satisfied.

By arranging the touch sensor control unit 214 in the middle of the row of

touch sensor electrodes

202, 204, 206, 208, the touch sensor control unit 214 is arranged at the end of the row of

touch sensor electrodes

202, 204, 206, 208 The number of touch

sensor electrode wirings

510, 511, 513, and 514 in parallel can be reduced as compared with the case where it is performed, and it becomes easy to satisfy the restriction of the distance between the wirings. Therefore, the display operation device 10 according to the first embodiment can be miniaturized. In addition, since the wire lengths of the touch

sensor electrode wires

510, 511, 513, and 514 are shorter than when the touch sensor control unit 214 is disposed at the end of the row of the

touch sensor electrodes

202, 204, 206, and 208. , It becomes easy to meet the restriction of wiring length.

By disposing the ground pattern 509 closer to the peripheral edge of the substrate 201 than the touch

sensor electrode wirings

510, 513, and 514, the touch sensor can be prevented from being susceptible to noise.

Wiring can be efficiently performed by extending the ground pattern 509 from the touch sensor peripheral circuit 512. Since the touch

sensor electrode wiring

510, 513, 514 passes through, if the ground pattern is extended from the touch sensor electrodes 502, 508, the floating capacitance increases due to the distance restriction, but the ground pattern 509 is extended from the touch sensor peripheral circuit 512. It is possible to suppress an increase in stray capacitance of the wiring leading to the ground pattern 509.

Second Embodiment
FIG. 8 is a view showing the arrangement of components and wirings mounted on a substrate of the display operation device according to the second embodiment of the present invention. The appearance of the display operation device 10 according to the second embodiment is the same as that of the display operation device 10 according to the first embodiment shown in FIG. In the display operation device 10 according to the second embodiment, the touch

sensor control units

602 and 606 and the display substrate control unit 604 are mounted on the substrate 614. The touch sensor control unit 602 is disposed between the touch sensor electrodes. The touch sensor control unit 606 is disposed between the touch sensor electrodes. The display substrate control unit 604 is disposed between the touch sensor electrodes. A light emitting unit is provided between the touch sensor electrodes on the surface on which the touch sensor electrode is provided, and the touch

sensor control units

602 and 606 and the display substrate control unit 604 are disposed on the back side of the light emitting unit.

The

touch sensor electrodes

601, 603, 605, and 607 are arranged in the order of the

touch sensor electrodes

601, 603, 605, and 607 from the one end side to the other end side. The touch sensor control unit 602 is connected to the touch sensor electrode 601 via a touch sensor electrode wiring 608 formed toward one end side of the row of

touch sensor electrodes

601, 603, 605, and 607. The touch sensor control unit 602 is connected to the touch sensor electrode 603 via a touch sensor electrode wiring 609 formed toward the other end side of the row of the

touch sensor electrodes

601, 603, 605, and 607. The touch sensor control unit 606 is connected to the touch sensor electrode 605 via a touch sensor electrode wiring 610 formed toward one end side of the row of

touch sensor electrodes

601, 603, 605, and 607. The touch sensor control unit 606 is connected to the touch sensor electrode 607 via the touch sensor electrode wiring 611 formed toward the other end side of the row of the

touch sensor electrodes

601, 603, 605, and 607. The display substrate control unit 604 is connected to the touch

sensor control units

602 and 606 via the

wires

616 and 617.

The touch sensor peripheral circuit 613 is disposed between the touch sensor electrode wiring 608 and the touch sensor electrode wiring 609 and adjacent to the touch control unit 602. The touch sensor peripheral circuit 615 is disposed between the touch sensor electrode wiring 610 and the touch sensor electrode wiring 611 and adjacent to the touch control unit 606. The touch sensor

peripheral circuits

613 and 615 are connected to a ground pattern 612 formed on the periphery of the substrate 614.

Even when the touch sensor control unit and the display substrate control unit for changing the display content of the display unit are separately configured, the display operation device 10 according to the second embodiment satisfies the wiring restriction, and the operation unit and the display unit And can be alternately arranged.

In the first and second embodiments described above, the structure in which the gasket is disposed between the touch sensor electrode and the panel is shown, but a transparent electrode may be used. FIG. 9 is a diagram showing a modification of the display operation unit of the display operation device according to the first and second embodiments. A transparent electrode sheet 102, which is a sheet on which a transparent electrode is printed, is attached to a design panel 101, and a touch sensor electrode 104 is disposed adjacent to a portion of the design panel 101 where characters or patterns are displayed. The substrate 103 and the touch sensor electrode 104 are connected via the touch sensor electrode wiring 106.

As in the case of using the touch sensor in which the gasket is disposed between the touch sensor electrode and the panel, extending the ground pattern 509 from the touch sensor peripheral circuit 512 suppresses an increase in stray capacitance of the wiring leading to the ground pattern 509. it can. Therefore, the display operation device 10 according to the modification of the first and second embodiments can have a structure in which the operation unit and the display unit are alternately arranged while satisfying the wiring restriction.

The configuration shown in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and one of the configurations is possible within the scope of the present invention. Parts can be omitted or changed.

DESCRIPTION OF SYMBOLS 10 Display operation apparatus, 101 design panel, 102 transparent electrode sheet, 103, 201, 614 board | substrate, 104, 202, 204, 206, 208, 601, 603, 605, 607 Touch sensor electrode, 106, 510, 511, 513, 514, 608, 609, 610, 611 touch sensor electrode wiring, 203, 205, 207 light emitting unit, 209 panel, 210 bracket, 214, 602, 606 touch sensor control unit, 301 peripheral circuit wiring, 401, 402 design surface panel, 403 display operation unit, 405, 407, 409, 411 operation unit, 406, 408, 410 display unit, 504, 506 light emitting unit wiring, 509 ground pattern, 512, 613, 615 touch sensor peripheral circuit, 604 display substrate control unit.

Claims

A substrate,
A plurality of operation units which are touch sensors provided with touch sensor electrodes arranged on one surface of the substrate;
A plurality of display units including a light emitting unit disposed on one surface of the substrate between the plurality of touch sensor electrodes, the lighting state changing in conjunction with the touch operation on the operation unit;
The touch sensor control unit is disposed on the other surface of the substrate and does not overlap the touch sensor electrode, detects a touch operation on the operation unit, and changes the lighting state of the light emitting unit.
The said touch sensor control part is a display operation apparatus arrange | positioned in the middle part of the row | line | column of the said touch sensor electrode.
The display according to claim 1, wherein the touch sensor control unit is a package in which terminals are arranged on four sides, and mounted on the substrate in a state in which the four sides of the touch sensor control unit are inclined with respect to four sides of the substrate. Operating device.
The substrate is
The touch sensor electrode wiring that connects the plurality of touch sensor electrodes and the touch sensor control unit is provided on one side of the row of the touch sensor electrodes,
The display operation device according to claim 1, further comprising a light emitting unit wiring that connects the plurality of light emitting units and the touch sensor control unit on the other side of the row of the touch sensor electrodes.
The touch sensor control unit includes a touch sensor peripheral circuit used for processing of detecting a touch operation on the operation unit,
The touch sensor peripheral circuit connects a plurality of touch sensor electrodes and the touch sensor control unit, and the touch sensor electrode wiring extending from the touch sensor control unit to one end side of the row of touch sensor electrodes; The touch sensor control unit is connected to the touch sensor electrode wiring that connects the touch sensor electrode and the touch sensor control unit and extends from the touch sensor control unit to the other end of the row of touch sensor electrodes. The display and operation device according to claim 3, disposed adjacent to.
The display operation device according to claim 4, further comprising: a ground pattern extending from the touch sensor peripheral circuit to a peripheral portion of the substrate.
The display operation device according to any one of claims 1 to 5, further comprising: a gasket installed to overlap the touch sensor electrode; and a panel installed to overlap the gasket.
A substrate,
A plurality of operation units which are touch sensors provided with touch sensor electrodes arranged on one surface of the substrate;
A plurality of display units including a light emitting unit disposed on one surface of the substrate between the plurality of touch sensor electrodes, the lighting state changing in conjunction with the touch operation on the operation unit;
A touch sensor control unit that is disposed on the other surface of the substrate and does not overlap the touch sensor electrode, and detects a touch operation on the operation unit;
A display substrate control unit disposed on the other surface of the substrate and at a position overlapping the light emitting unit, and changing a lighting state of the light emitting unit;
The display operation device in which the touch sensor control unit and the display substrate control unit are disposed at an intermediate portion of a row of the touch sensor electrodes.
And a touch sensor peripheral circuit used for processing in which the touch sensor control unit detects a touch operation on the operation unit,
The touch sensor peripheral circuit connects a plurality of the touch sensor electrodes and the touch sensor control unit, and a touch sensor electrode wiring extending from the touch sensor control unit to one end side of the row of the touch sensor electrodes; Adjacent to the touch sensor control unit at a portion between a touch sensor electrode and the touch sensor control unit and a touch sensor electrode wiring extending from the touch sensor control unit to the other end side of the touch sensor electrode row The display and operation apparatus according to claim 7, wherein the display and operation device is disposed.
9. The display operation device according to claim 8, further comprising a plurality of the touch sensor peripheral circuits, and a ground pattern extending from at least one of the touch sensor peripheral circuits to a peripheral portion of the substrate.