JP4860554B2 - Input panel and input device - Google Patents

Description

  The present invention relates to an input panel to which a flexible wiring board is connected, and an input device in which the input panel is housed in a casing.

  In recent years, input panels such as touch panels and tablets that can input data by approaching or touching input means such as pen-shaped writing instruments and fingertips are used for data input in electrical devices such as PDAs (Personal Digital Assistants) and game machines. Often used as a means.

  As a method for detecting coordinate information for inputting data to the input panel, detection methods such as a resistive film type, an electromagnetic induction type, an electrostatic type, an ultrasonic type, and an optical type are conventionally known. FIG. 11 is a schematic cross-sectional view showing an example of an input device having a conventional resistive film type input panel. As shown in FIG. 11, the input panel 24 has a pair of planar shapes having the same size. The bases 28 and 29 are arranged to face each other with a predetermined gap. A plurality of electrodes (not shown) each made of a resistive film made of a light transmissive material are formed on the inner surfaces of the two substrates 28 and 29 facing each other. 29 is extended to one end edge portion of the second base 29 disposed on the non-input side to serve as an electrode terminal.

  When the input panel 24 is pressed by any position of the first base body 28 located on the input side of the base bodies 28 and 29 using a writing tool (not shown), the first base body 28 is bent and the first base body 28 is bent. The resistance film of the first base 28 comes into contact with the electrode of the second base 29 located on the opposite input side, and the coordinate information of this contact point is detected by the resistance ratio between the two electrodes at this contact point, and based on this coordinate information To enter data.

  A flexible wiring board 32 for supplying power to the electrodes of the input panel 24 is connected to the input panel 24. The flexible wiring board 32 is disposed between both the bases 28 and 29, and the electrodes of the flexible wiring board 32 are conductively connected to the electrode terminals of the input panel 24.

  The input device 23 including the input panel 24 includes a housing 21 that houses the input panel 24. The casing 21 includes a side wall 25 that is disposed to face the side surface of the input panel 24, a top wall 22 that is disposed to face the outer peripheral edge of the top surface on the input side, and holds the top surface of the input panel 24. And a bottom wall 31 that is disposed to face the bottom surface on the input side and supports the input panel 24. The bottom wall 31 is formed with an opening 31 a that exposes the central portion of the bottom surface of the input panel 24. And the housing | casing 21 accommodates and hold | maintains the input panel 24 inside (for example, refer patent document 1).

  In this input device 23, the flexible wiring board 32 connected to one end portion of the input panel 24 is sandwiched between the tip edge 29 a of one end portion of the second base 29 and the side wall 9 of the housing 21. Is bent along the leading edge 29a of the second base body. The flexible wiring board 32 is disposed along the bottom wall 31 of the casing 21 while being sandwiched between the bottom wall 31 of the casing 21 and the bottom surface of the input panel 24, and then the opening edge of the opening 31a of the bottom wall 31. And is extended to the outside of the housing 21.

JP 2003-157150 A

  Here, in recent years, with the reduction in size and thickness of electric devices such as game machines equipped with the input device 23 as described above, it is desired to reduce the thickness of the input device 23 itself. Therefore, it is considered to reduce the thickness of the input device 23 by not forming the top wall 22 of the casing 21.

  However, in the conventional input device 23 as described above, the flexible wiring board 32 is positioned so as to be sandwiched between the leading edge 29a of the second base 29 and the side wall 25 of the casing 21, so If the top wall 22 is not formed, the flexible wiring board 32 is visually recognized from the input side. For this reason, by not forming the top wall 22, the input device 23 cannot be thinned and the input side thereof can be flattened.

  The flexible wiring board 32 is complicatedly bent while being sandwiched between the casing 21 and the input panel 24 in order to extend outside or inside the casing 21. If it is bent more than once in a complicated manner, the bent portion of the flexible wiring board 32 is fatigued, and there is a problem that the electrode of the flexible wiring board 32 may be broken.

  The present invention has been made in view of these points, and an object of the present invention is to provide an input panel and an input device that can be reduced in thickness and planarized on the input side.

To achieve the above object, the input panel according to the present invention comprises a pair of substrates, the electrode provided on the mutually facing surfaces on both substrates, are electrically connected to the electrode is connected to the both base A flexible wiring board,
The counter-input side substrate disposed counter input side of said two substrates, and a recess in which the flexible wiring board is disposed, and a passage for guiding the flexible wiring board in a counter input of the counter input substrate It is in a formed point.

  According to the input panel of the present invention, the flexible wiring board is input by extending the flexible wiring board to the non-input side of the non-input side substrate via a passage formed in the non-input side substrate. Without being arranged outside the planar shape of the side substrate, it can be arranged to extend to the opposite input side of the opposite input side substrate.

  The other input panel according to the present invention is characterized in that the passageway is a through hole, and the flexible wiring board is arranged to extend to the non-input side of the non-input side substrate through the through hole.

  According to the other input panel according to the present invention, the flexible wiring board is arranged on the non-input side of the non-input-side base through the through hole formed in the non-input-side base. Without being disposed outside the planar shape of the substrate, the substrate can be disposed so as to extend to the opposite input side of the opposite input side substrate.

  The other input panel according to the present invention is characterized in that the passage is a notch groove formed at one end of the non-input side substrate, and the flexible wiring board is inserted into the counter-input side via the notch groove. It is in the point which extends and arrange | positions to the non-input side of a base | substrate.

  According to the other input panel according to the present invention, the flexible wiring board is placed on the non-input side of the non-input side base via the notch groove formed in the non-input side base, thereby inputting the flexible wiring board. Without being arranged outside the planar shape of the side substrate, it can be arranged to extend to the opposite input side of the opposite input side substrate.

  The other input panel according to the present invention is characterized in that the cross-sectional shape of the input panel is formed in a curved shape in a portion of the passageway that is in contact with the flexible wiring board.

  According to the other input panel according to the present invention, the flexible wiring board can be bent without damaging the portion of the passageway that is in contact with the flexible wiring board. Can be further reduced.

  According to the other input panel of the present invention, when the flexible wiring board is disposed in the gap between the two substrates in order to conductively connect both the substrates and the flexible wiring substrate, the flexible wiring substrate is disposed in the recess. The input side surface of the input side substrate can be flattened. Thereby, the input panel itself can be flattened and thinned.

  Another feature of the input panel according to the present invention is that the recess is formed from the position where the flexible wiring board is connected to the passage.

  According to the other input panel according to the present invention, the flexible wiring board is disposed in the recess formed so as to reach the passage from the position where the flexible wiring board is connected on the input side surface of the non-input side base. Thus, even when the distance from the connected position to the passage is long, the input side surface of the input side substrate can be surely flattened by disposing the flexible wiring board therebetween in the recess. it can.

  Another feature of the input panel according to the present invention is that the concave portion is formed with the same depth as the thickness of the flexible wiring board.

  According to the other input panel according to the present invention, the concave portion is formed to have the same depth as the thickness of the flexible wiring board, so that the input side surface of the input side substrate can be surely flattened. it can.

  The input device according to the present invention is characterized in that in the input device including the input panel and a housing having a side wall disposed opposite to a side surface of the input panel and housing the input panel. The wiring board is arranged so as to extend to the outside or the inside of the casing through the passage.

  According to the input device of the present invention, the flexible wiring board is arranged to extend to the non-input side of the input panel through the passage formed in the non-input-side base, thereby arranging the flexible wiring board on the input-side base. Without being arranged outside in the planar shape, it can be arranged to extend outside or inside the housing.

  As described above, according to the input panel according to the present invention, the flexible wiring board can be arranged to extend to the non-input side of the non-input side substrate without being arranged outside the planar shape of the input-side substrate. Therefore, even if the top wall of the housing that houses the input panel is not formed, the flexible wiring board is not visually recognized from the viewing side. As a result, the input panel can be housed and held by the casing in which the top wall is not formed, so that the input device including the input panel can be thinned and the input side can be flattened.

  Further, according to the input device of the present invention, the flexible wiring board can be extended and arranged outside or inside the casing without being arranged outside the planar shape of the input side substrate. Even if the top wall is not formed, the flexible wiring board is not visually recognized from the viewing side of the input device. As a result, the input panel can be housed and held by the casing in which the top wall is not formed, so that the input device itself can be thinned and the input side can be flattened.

Hereinafter, embodiments and reference examples of an input device including an input panel according to the present invention will be described with reference to FIGS.

Oite below, as an input panel in which the input device has, will be described with reference to a resistive film type touch panel, the input panel of the present invention is not limited thereto.

FIG. 1 is a schematic plan view showing an input device according to a first reference example , and FIG. 2 is a cross-sectional view taken along line 2-2 of FIG.

As shown in FIGS. 1 and 2, the input device 1 includes a touch panel 2, and the touch panel 2 includes a pair of bases 3 and 4 made of a light-transmitting material having the same planar shape. The first base 3 disposed on the input side of both the bases 3 and 4 is formed of a thin flexible film made of a material such as polyester, while the second base 3 is disposed on the non-input side. The base 4 is constituted by a substrate made of a transparent resin material such as glass or acrylic. Both bases 3 and 4 are disposed to face each other with a predetermined gap, and are integrally formed via an adhesive layer (not shown) disposed on the outer peripheral edge of the inner surface of the first base 3.

  A plurality of electrodes (not shown) each made of a resistive film made of a light-transmitting material such as indium tin oxide are formed on the inner surfaces of the substrates 3 and 4 facing each other. Are extended to one end portion of the second base 4 to serve as electrode terminals.

  The touch panel 2 is configured such that when an arbitrary position of the first base 3 is pressed by an input means such as a writing tool or a finger (not shown), the electrode formed on the first base 3 is bent by the first base 3. The electrode is formed in contact with the electrode formed on the second substrate 4, the coordinate information of the contact point is detected by the resistance ratio between the electrodes at the contact point, and data is input based on the coordinate information. ing.

  In the touch panel 2, a flexible wiring board 11 for applying a voltage for coordinate detection to the electrodes via the electrode terminals is disposed between the base bodies 3 and 4 and connected to one end portion of the second base body 4. The electrodes (not shown) of the flexible wiring board 11 are conductively connected to the electrode terminals of the touch panel 2.

  The input device 1 also includes a housing 8 made of a resin material or the like that houses the touch panel 2, and the housing 8 is the entire side surface of the touch panel 2, that is, the first substrate 3, the adhesive layer, and the second substrate 4. And a bottom wall 10 that faces the bottom surface of the touch panel 2, that is, the surface opposite to the input side of the second substrate 4, and supports the touch panel 2. The wall 10 is integrally formed. The bottom wall 10 is disposed to face the outer peripheral edge portion of the bottom surface of the touch panel 2, and the bottom wall 10 is formed with an opening 10 a that exposes the central portion of the bottom surface. The touch panel 2 is housed inside the housing 8.

  In such an input device 1, the flexible wiring board 11 in the second base 4 of the touch panel 2 is connected to the flexible wiring board 11 at a position corresponding to the opening 10 a in the bottom wall 10 of the housing 8. A through hole 6 is formed as a passage through which the wiring substrate 11 can pass. An opening edge on the inner surface side of the second base body 4 in the through hole 6, that is, a corner portion where the flexible wiring board 11 contacts when the flexible wiring board 11 is passed through the through hole 6 is formed in a curved cross section. . Thereby, the flexible wiring board 11 can be smoothly passed through the through-hole 6, and disconnection of the flexible wiring board 11 due to the contact portion can be reduced. Then, the flexible wiring board 11 connected to one end portion of the second base 4 is bent along the opening edge of the through hole 6 of the second base 4, passes through the through hole 6, and is opposite to the second base 4. After being extended to the input side, it is arranged to extend to the outside of the housing 8 through the opening 10 a in the bottom wall 10 of the housing 8.

As shown in FIGS. 2 and 3, the width dimension HW of the through hole 6 corresponding to the thickness dimension FT of the flexible wiring board 11 is the case where the flexible wiring board 11 having a thickness dimension FT of 0.1 to 0.2 mm is used. The thickness dimension FT of the flexible wiring board 11 is preferably about 0.1 to 0.2 mm. On the other hand, the length dimension HL of the through-hole 6 corresponding to the width dimension FW of the flexible wiring board is the width dimension FW + 0.1 to 0.1 of the flexible wiring board 11 when the flexible wiring board 11 having a width dimension FW of 2 to 15 mm is used. It is preferable that it is about 1.0 mm. Thereby, the flexible wiring board 11 can be smoothly passed through the through hole 6.

Next, the operation of this reference example will be described.

According to the present reference example , the flexible wiring board 11 can be extended and disposed on the non-input side of the touch panel 2 through the through hole 6 of the second base 4. Thereby, the flexible wiring board 11 is not bent along the front end edge 4 a at the one end portion of the second base 4, and the flexible wiring board 11 is not disposed outside the planar shape of the first base 3. The housing 8 can be arranged so as to extend to the outside of the housing 8 through the opening 10 a of the bottom wall 10.

  Therefore, by disposing the flexible wiring board 11 outside the casing 8 without being arranged outside the planar shape of the first base 3, the flexible wiring board 11 can be formed without forming the top wall of the casing 8. It is not visually recognized from the visual recognition side of the input device 1. Thereby, since the touch panel 2 can be accommodated and held by the casing 8 in which the top wall is not formed, the input device 1 itself can be thinned and the input side can be flattened.

  Further, the through hole 6 is formed at a position corresponding to the opening 10 a in the bottom wall 10, so that the flexible wiring board 11 is not sandwiched between the side wall 9 of the housing 8 and the tip edge 4 a of the second base 4. Can be arranged outside the housing 8. For this reason, since the flexible wiring board 11 can be arranged outside the housing 8 without being bent in a complicated manner, disconnection due to fatigue of the flexible wiring board 11 is reduced, and the life of the input device 1 is extended. Can do.

  Furthermore, since the opening edge of the through hole 6 with which the flexible wiring board 11 contacts is formed in a curved cross section, the flexible wiring board 11 can be bent without being damaged at the opening edge of the through hole 6. As a result, the disconnection of the electrode due to fatigue of the flexible wiring board 11 can be further reduced.

Next, a second reference example will be described with reference to FIGS.

Here, in the second reference example , the same configuration as that of the first reference example will be described using the same reference numerals, and detailed description thereof will be omitted.

FIG. 4 is a schematic plan view showing the input device 1 in the second reference example , and FIG. 5 is a cross-sectional view taken along line 5-5 of the input device 1 in FIG.

  As shown in FIGS. 4 and 5, a notch groove 13 as a passing path through which the flexible wiring board 11 can pass is formed at one end portion of the second base 4 on the tip edge 4 a at one end portion of the second base 4. The opening edge on the inner surface side of the second base 4 in the notch groove 13, that is, the corner portion where the flexible wiring board 11 abuts, is preferably formed in a curved cross section. Thereby, the flexible wiring board 11 can be smoothly passed through the notch groove 13, and the disconnection of the flexible wiring board 11 due to the contact portion can be reduced. The notch dimension CW in the notch groove 13 is such that the gap dimension BW from the opening edge of the opening 10 a to the opening edge of the notch groove 13 in the bottom wall 10 of the housing 8 is not less than the thickness dimension FT of the flexible wiring board 11. It is preferable to be formed as follows.

  Then, the flexible wiring board 11 connected to one end portion of the second base 4 is bent along the opening edge of the notch groove 13 of the second base 4 and the notch groove 13 is passed through the second base 4. After extending to the non-input side, it is arranged to extend to the outside of the housing 8 through the opening 10 a in the bottom wall 10 of the housing 8.

  In addition, as shown in FIG. 6, the other end portion of the flexible wiring board 11 extended to the opposite input side of the second substrate 4 through the notch groove 13 is, for example, a second side tape 21 or the like. You may affix on the surface of the base | substrate 4 on the opposite input side. Thereby, in order to connect the flexible wiring board 11 and the external electrode board 12, it is not necessary to extend the other end of the flexible wiring board 11 to the outside of the housing 8, and the length dimension of the flexible wiring board 11 is increased. The input device 1 can be reduced in thickness while being shortened. Further, since the electrode terminals of the flexible wiring board 11 connected to the input panel 2 are arranged on the surface opposite to the input side of the input panel 2, the casing 8 in which the opening 10 a is formed in the bottom wall 10. The touch panel 2 is housed inside the touch panel 2, the surface opposite to the input side of the touch panel 2 is brought into contact with the external electrode substrate 12, and the electrode terminal of the flexible wiring substrate 11 is brought into contact with the electrode terminal of the external electrode substrate 12. And the circuit board can be easily conductively connected.

Next, the operation of the second reference example will be described.

According to the second reference example , the flexible wiring board 11 is placed on the distal end edge 4 a at the one end portion of the second base 4 by disposing it on the opposite input side of the touch panel 2 through the notch groove 13 of the second base 4. Without being bent along and without the flexible wiring board 11 being arranged outside the planar shape of the first base 3, the opening 8 a of the bottom wall 10 in the casing 8 is provided outside the casing 8. Can be placed.

  Therefore, the flexible wiring board 11 is arranged outside the casing 8 without being arranged outside the planar shape of the first base 3, so that the flexible wiring board 11 can be formed without forming the top wall of the casing 8. Is not visually recognized from the viewing side of the input device 1. Thereby, since the touch panel 2 can be accommodated and held by the casing 8 in which the top wall is not formed, the input device 1 itself can be thinned and the input side can be flattened.

  Further, the notch dimension CW in the notch groove 13 is set such that the gap dimension from the opening edge of the opening 10 a in the bottom wall 10 of the housing 8 to the opening edge of the notch groove 13 is equal to or greater than the thickness dimension FT of the flexible wiring board 11. The flexible wiring board 11 can be disposed outside the housing 8 without being bent in a complicated manner. Thereby, the disconnection by the fatigue of the flexible wiring board 11 can be reduced, and the lifetime of the input device 1 can be extended.

  Further, by forming the opening edge of the cutout groove 13 so that the cross-sectional shape is curved, the flexible wiring board 11 can be bent without being damaged at the opening edge of the cutout groove 13. It becomes possible to further reduce the disconnection of the electrode due to fatigue of the wiring board 11.

Next, a first embodiment of an input device having an input panel according to the present invention will be described with reference to FIGS.

Here, in the first embodiment, the same components as those in the above-described reference examples will be described using the same reference numerals, and detailed description thereof will be omitted. Detailed descriptions of the same operations and effects as those of the above-described reference examples are also omitted.

FIG. 7 is a schematic cross-sectional view showing the input device 1 including the touch panel 2 as the input panel in the first embodiment, and FIG. 8 is a schematic plan view showing the second base 4 of the touch panel 2 in the input device 1 of FIG. It is.

As shown in FIGS. 7 and 8, the touch panel 2 of the input device 1 according to the first embodiment has a pair of bases 3 and 4, and is disposed on the input side of both bases 3 and 4. The first base 3 is formed of a thin flexible film having a resistance film such as ITO formed at a predetermined position on the surface on the non-input side, while the second substrate 3 is disposed on the non-input side. The base 4 is constituted by a substrate made of a transparent resin material such as glass or acrylic. Both bases 3 and 4 are arranged to face each other with a predetermined gap, and are integrally formed by an adhesive layer 16 placed on the outer peripheral edge in the gap between the bases 3 and 4.

  Electrodes 15A and 15B (15) made of, for example, a metal material such as silver are provided on the inner surfaces of the two substrates 3 and 4 that face each other. 4 are extended to one end of the electrode terminals 22A and 22B (22). Further, over resists 17A and 17B (17) are provided on the inner surfaces of both bases 3 and 4 so as to cover each electrode 15, and the over resist 17A provided on the first base 3 is the first base. 3 is extended so as to cover each electrode terminal 22 </ b> A formed in 3.

  Further, on the touch panel 2, a flexible wiring substrate 11 for applying a voltage for coordinate detection to the electrodes 15 via the electrode terminals 22 is disposed between the substrates 3 and 4, so An electrode (not shown) that is electrically connected to each electrode terminal 22 of each electrode 15 of both bases 3 and 4 is provided on both surfaces of the flexible wiring board 11.

  And the recessed part 18 is formed in the part by which the flexible wiring board 11 in the 2nd base | substrate 4 of the touch panel 2 is arrange | positioned, and the end which the one end part of the flexible wiring board 11 opposes among the surfaces of the input side in the recessed part 18 The edge and one end edge of the surface on the input side excluding the concave portion 18 in the second base 4 are connected by an inclined surface 18a. The electrode terminal 22B provided on the second base 4 is disposed on the input side surface of the recess 18 via the inclined surface 18a, and the electrode formed on the non-input side surface of the flexible wiring board 11 is a recess. The electrode terminal 22B extended to 18 is conductively connected via a conductive adhesive (not shown).

  The depth dimension of the recess 18 is the same as the thickness dimension of the flexible wiring board 11 disposed in the recess 18, and is provided on the input-side surface of the flexible wiring board 11 disposed in the recess 18. The electrodes are in contact with an over resist 17A provided on the first base 3. A through hole 19 for exposing the electrode terminal 22A provided on the first base 3 from the overresist 17A is formed in a part of the overresist 17A provided on the first base 3 that contacts the electrode of the flexible wiring board 11. The electrodes of the flexible wiring board 11 are conductively connected to the electrode terminals 22 </ b> A of the first base 3 via the conductive adhesive 20 disposed inside the through hole 19.

  In the input device 1, the flexible wiring board is located at one end portion of the second base 4 of the touch panel 2 to which the flexible wiring board 11 is connected and corresponding to the opening 10 a in the bottom wall 10 of the housing 8. A through hole 6 is formed as a passage through which 11 can pass. Then, the flexible wiring board 11 connected to one end portions of both the bases 3 and 4 is bent along the opening edge of the through hole 6 of the second base 4 and passes through the through hole 6. It extends to the side opposite to the input side, and further extends to the outside of the housing 8 through an opening 10 a in the bottom wall 10 of the housing 8.

  In the manufacturing process of the touch panel 2 of the input device 1, the electrode 15B and the electrode terminal 22B are printed at predetermined positions on the input side surface of the second substrate 4, and then the electrode 15B is covered with the over resist 17B. Subsequently, one end of the flexible wiring board 11 is disposed in the recess 18 via a conductive adhesive, and the other end of the flexible wiring board 11 is extended to the opposite input side of the second base body 4 through the through hole 6. Let Next, the flexible wiring board 11 is pressure-bonded to the concave portion 18 of the second base 4 to electrically connect the electrode 15A of the second base 4 and the electrode of the flexible wiring board 11 through a conductive adhesive, and then the flexible wiring The conductive adhesive 20 is applied to a predetermined position corresponding to the electrode terminal 15 </ b> A of the first base 3 in the electrode of the substrate 11, and the adhesive layer 16 is disposed on the outer peripheral edge of the second base 4. The electrode formed on the input-side surface of the flexible wiring board 11 and the electrode terminal 22A of the first base 3 are conductively connected through the through-hole 19 formed in the over resist 17A of the first base 3; The first base 3 is bonded to the second base 4 by the adhesive layer 16. Then, the touch panel 2 is dried and completed.

Next, the operation of the first embodiment will be described.

  According to the present embodiment, since the recess 18 is formed at the position where the flexible wiring board 11 is arranged on the input side surface of the second base 4, the bases 3, 4 and the flexible wiring board 11 are conductively connected. Therefore, when the flexible wiring board 11 is disposed in the gap between the two bases 3 and 4, the input side surface of the first base 3 can be flattened.

  Therefore, even if the top wall of the housing 8 is not formed, a convex portion is formed on the input side surface of the first base 3 due to the flexible wiring board 11 being disposed in the gap between the bases 3 and 4. Therefore, the touch panel 2 can be stored and held by the casing 8 in which the top wall is not formed. As a result, the input device 1 itself can be made thinner and the input side can be flattened. Further, the touch panel 2 itself can be thinned and the input side can be flattened.

  Further, one end edge of the input-side surface of the recess 18 facing the one end of the flexible wiring board 11 is connected to one end edge of the input-side surface of the second base 4 excluding the recess 18 by an inclined surface 18a. Thus, it is possible to prevent the electrode terminal 22B of the electrode 15B formed on the input side surface of the concave portion 18 from being disconnected from the input side surface of the second base body 4 excluding the concave portion 18 via the inclined surface 18a. it can.

  Furthermore, the depth dimension of the recess 18 is formed to be the same as the thickness of the flexible wiring board 11 disposed in the recess 18 and is provided on the input side surface of the flexible wiring board 11 disposed in the recess 18. By forming the electrode so as to be in contact with the over resist 17A provided on the first base 3, the surface on the input side of the first base 3 can be surely flattened.

  In addition, as shown in FIG. 9, when the through hole 6 is formed at the corner of the second base 4 that is separated from the connection position between the electrode of the flexible wiring board 11 and the electrode terminal 22 of both bases 3 and 4. The recess 18 is formed at a position where the flexible wiring board 11 is arranged from the position where the electrodes of the flexible wiring board 11 are connected to the electrode terminals 22 of the bases 3 and 4 to the through hole 6. Thereby, according to the touch panel 2 which concerns on this embodiment, the surface of the input side of the 1st base | substrate 3 can be planarized reliably.

Next, a second embodiment of an input device having an input panel according to the present invention will be described with reference to FIG. 10.

Here, in the second embodiment, the same configurations as those of the above-described reference examples and embodiments will be described using the same reference numerals, and detailed description thereof will be omitted. Detailed descriptions of the same operations and effects as those of the above-described reference examples and the embodiments are omitted.

FIG. 10 is a schematic cross-sectional view showing the input device 1 including the touch panel 2 as an input panel according to the second embodiment.

As shown in FIG. 10, the touch panel 2 of the input device 1 according to the second embodiment has a pair of bases 3 and 4, and the bases 3 and 4 are arranged to face each other with a predetermined gap. These are integrally formed by an adhesive layer 16 disposed on the outer peripheral edge in the gap between the substrates 3 and 4.

  Electrodes 15 made of a resistive film made of, for example, a metal material such as silver are provided on the inner surfaces of the two substrates 3 and 4 facing each other. The electrode 15A provided on the first substrate 3 An electrode terminal 22 </ b> A is extended to one end portion of one substrate 3. An over resist 17 is provided on the inner surfaces of both the bases 3 and 4 so as to cover each electrode 15, and the over resist 17 A provided on the first base 3 is provided with an electrode terminal 22 A on the first base 3. The portion is extended so as to cover each electrode terminal 22A.

  In the touch panel 2, a flexible wiring substrate 11 for applying a voltage for detecting coordinates to the electrodes 15 is disposed between the bases 3 and 4 and connected to one end of the bases 3 and 4. In addition, on the input-side surface of the flexible wiring board 11, electrodes (not shown) that are conductively connected to the electrodes 15 of both the substrates 3 and 4 are provided.

  A concave portion 18 is formed in a portion of the second base 4 of the touch panel 2 where the flexible wiring substrate 11 is disposed, and the depth dimension of the concave portion is the same as the thickness dimension of the flexible wiring substrate 11 disposed in the concave portion 18. It is formed to the dimension. Then, on the input side surface of the flexible wiring board 11 disposed in the recess 18 of the second base body 4, the electrode 15 </ b> B of the second base body 4 extends corresponding to the electrode formed on the flexible wiring board 11, Thereby, the electrode of the flexible wiring board 11 and the electrode terminal 22B of the second substrate 4 are conductively connected. Further, the over resist 17B provided so as to cover the electrode 15B of the second substrate 4 is extended on the input side surface of the electrode terminal 22B so as to cover each electrode terminal 22B.

  A through hole 19 for exposing the electrode terminal 22A provided on the first base 3 from the over resist 17A is formed in a part of the overresist 17A provided on the first base 3 facing the electrode of the flexible wiring board 11. The electrode of the flexible wiring board 11 is conductively connected to the electrode terminal 22A of the first base 3 via the conductive material 20 disposed inside the through hole 19.

  In the input device 1, the flexible wiring board is located at one end portion of the second base 4 of the touch panel 2 to which the flexible wiring board 11 is connected and corresponding to the opening 10 a in the bottom wall 10 of the housing 8. A through hole 6 is formed as a passage through which 11 can pass. Then, the flexible wiring board 11 connected to one end portions of both the bases 3 and 4 is bent along the opening edge of the through hole 6 of the second base 4 and passes through the through hole 6. It extends to the side opposite to the input side, and further extends to the outside of the housing 8 through an opening 10 a in the bottom wall 10 of the housing 8.

  In the manufacturing process of the touch panel 2 of the input device 1, one end of the flexible wiring board 11 is disposed in the recess 18, and the other end of the flexible wiring board 11 is opposed to the second base 4 through the through hole 6. Extend to the input side. Next, the electrode 15A is printed at a predetermined position on the input side surface of the second base 4 and each electrode 15B of the second base 4 is formed on the flexible wiring substrate 11 on the input side surface of the flexible wiring substrate 11. The electrode terminal 22B is formed by printing corresponding to the formed electrode, and then the electrode 15B is covered with the over resist 17B. Subsequently, the conductive connecting material 20 is applied to a predetermined position corresponding to the electrode terminal 22 </ b> A of the first base 3 in the electrode of the flexible wiring substrate 11, and the adhesive layer 16 is disposed on the outer peripheral edge of the second base 4. The electrode formed on the input-side surface of the flexible wiring board 11 and the electrode terminal 22A of the first base 3 are conductively connected through the through-hole 19 formed in the over resist 17A of the first base 3; The first base 3 is bonded to the second base 4 by the adhesive layer 16. Then, the touch panel 2 is dried and completed.

Next, the operation of the second embodiment will be described.

  According to the present embodiment, since the recess 18 is formed at the position where the flexible wiring board 11 is arranged on the input side surface of the second base 4, the bases 3, 4 and the flexible wiring board 11 are conductively connected. Therefore, when the flexible wiring board 11 is disposed in the gap between the two bases 3 and 4, the input side surface of the first base 3 can be flattened. Further, the electrode terminal 22B of the second base 4 is formed on the input side surface of the flexible wiring board 11 at a position corresponding to the electrode of the flexible wiring board 11, so that the electrode is only on one side (input side surface). By using the flexible wiring board 11 provided on the substrate, conductive connection between the electrode terminals 22 of the bases 3 and 4 and the electrodes of the flexible wiring board 11 can be performed. Thereby, the touch panel 2 can be further reduced in thickness.

  Therefore, even if the top wall of the housing 8 is not formed, a convex portion is formed on the input side surface of the first base 3 due to the flexible wiring board 11 being disposed in the gap between the bases 3 and 4. Therefore, the touch panel 2 can be stored and held by the casing 8 in which the top wall is not formed. As a result, the input device 1 itself can be made thinner and the input side can be flattened. Further, the touch panel 2 itself can be further reduced in thickness.

  In addition, this invention is not limited to the said embodiment, A various change is possible as needed.

  For example, in each of the above embodiments, the second base 4 is formed in the same size as the first base 3 in the planar shape, but is not limited to this, and is smaller in the planar shape than the first base 3. It may be formed.

  Moreover, in each said embodiment, although the flexible wiring board 11 becomes a structure extended outside the housing | casing 8 through the through-hole 6 or the notch groove 13, it is not limited to this, A through-hole 6 or the notch groove 13 may be used to extend inside the housing 8.

  Further, in each of the above embodiments, the over resist 17 is formed on both the first base 3 and the second base 4, but is not limited to this, and any one of the bases 3, 4 is used. It may be formed.

Schematic plan view showing a reference example of an input device according to the present invention FIG. 2 is a schematic cross-sectional view taken along line 2-2 of the input device of FIG. FIG. 1 is a schematic plan view showing a main part of a non-input side substrate in the input device of FIG. Schematic plan view showing the main part of another reference example of the input device 4 is a schematic cross-sectional view taken along line 5-5 of the input device of FIG. Schematic sectional view showing another reference example of input device 1 is a schematic sectional view showing a first embodiment of an input device according to the present invention. FIG. 7 is a schematic plan view of the input device of FIG. Schematic plan view showing still another embodiment of the input device according to the present invention. Schematic sectional view showing a second embodiment of the present invention Schematic sectional view showing an example of a conventional input device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Input device 2 Touch panel 3 1st base | substrate 4 2nd base | substrate 4a Tip edge 6 Through-hole 8 Case 9 Side wall 10 Bottom wall 10a Opening part 11 Flexible wiring board

Claims (7)

A pair of substrates, it has the electrode provided on the mutually facing surfaces on both substrate and a flexible wiring board which is conducting the said electrodes are connected to both the base body,
The counter-input side substrate disposed counter input side of said two substrates, and a recess in which the flexible wiring board is disposed, and a passage for guiding the flexible wiring board in a counter input of the counter input substrate An input panel characterized by being formed.   2. The input panel according to claim 1, wherein the passage is a through-hole, and the flexible wiring board is arranged to extend to the counter-input side of the counter-input-side base via the through-hole.   The passing path is a notch groove formed at one end of the counter-input side base, and the flexible wiring board is arranged to extend to the counter-input side of the counter-input side base via the notch groove. The input panel according to claim 1.   4. The input panel according to claim 1, wherein the cross-sectional shape is formed in a curved shape in a portion where the flexible wiring board is in contact with the passage. 5. The input panel according to claim 1 , wherein the recess is formed from a position where the flexible wiring board is connected to the passage. 6. The input panel according to claim 1 , wherein the recess is formed with a depth that is the same as a thickness of the flexible wiring board. An input device comprising: the input panel according to any one of claims 1 to 6 ; and a housing having a side wall disposed to face a side surface of the input panel and storing the input panel. In
An input device, wherein the flexible wiring board is arranged to extend outside or inside the casing through the passage.

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