CN206270922U - Touch panel - Google Patents

Abstract

The utility model provides a kind of excellent impact resistance and need not set the touch panel excellent from operation surface side observation design of ornamental portion.A kind of touch panel (1), possesses：On the face relative with operating surface (11b) of the substrate (11) with translucency, the sensor portion (2) that the first electrode (13) and second electrode (14) being made up of multiple electrodes row respectively are formed so that state of insulation intersects；And clip the housing section (3) of sensor portion (2), using the operating surface (11b) of sensor portion (2) as face side, in the face side of substrate (11), in the way of the first electrode (13) arranged in the rear side for covering substrate (11) and the distribution region (E2) in the wiring lead portion (18) of second electrode (14), it is formed with notch part (11c), housing section (3) is in the mode coplanar with substrate (11), the mode for clipping the outer edge of substrate (11) from table while notch part (11c) is covered passes through molding resin material.

Description

Touch panel

Technical field

The utility model relates to carry out the touch panel of the projection capacitance-type of the multiple spot detection of finger tip.

Background technology

In recent years, in portable phone, intelligent apparatus (for example, panel type terminal, E-book reader etc.), auto navigation system System etc. is in electronic equipment, be equipped with as interface it is a kind of mode, possess advantage be being capable of intuitive operation, excellent in te pins of durability Touch panel function the display device (display device with touch panel：Touch-panel device).

Touch panel is position of the detection based on the touches of indication body such as finger or stylus and the coordinate for determining the touch location Put input unit.Its detection mode is roughly divided into the resistive film side being made up of analog resistance film method and resistance matrix film mode Formula, the capacitance-type being made up of surface type capacitance-type and projection type capacitance-type, by noctovisor scan side Optical mode that formula and reflex reflection mode are constituted and the ultrasonic wave mode being made up of surface acoustic wave mode and Lamb wave mode, And the detection mode of various modes is practical.

However, in recent years, the demand that the touch panel of projection type capacitance-type is particularly in above-mentioned detection mode expands Greatly.The touch panel of projection type capacitance-type is by the electrode near finger tip when finger tip is close by two electrodes series in length and breadth Static capacity the change touch panel that is turned to the position coordinates on touch panel to detect.

Fig. 4 is the partial sectional view of of the touch panel for representing this projection type capacitance-type.The projection of Fig. 4 The touch panel 51 of type capacitance-type is configured to basic structure and is manufactured with following, in a base with translucency The one side (back side relative with the surface as operation surface side) of plate 52 forms sensor portion 54, and by sensor portion 54 via double The jointing materials such as face adhesive tape 56 be embedded in housing section 55 engaging recessed part 55a, the sensor portion 54 have be laminated by along first The first electrode (for example, X electrode) of the multiple row of the nesa coating composition that direction (for example, laterally) extends and by edge and the The second electrode of the multiple row of the nesa coating composition that the intersecting second direction of one electrode (for example, longitudinal direction) extends is (for example, Y is electric Pole) electrode portion 53.In addition, in substrate 52, being formed from each of electrode portion (first electrode, second electrode) 53 via decorative layer 58 The wiring lead portion 57 that end is drawn.In addition, to cover the electrode portion 53 of sensor portion 54 and the entirety in wiring lead portion 57 Mode form the protective layer 59 being made up of transparent insulating film.Then, on the position relative with the sensor portion 54 of substrate 52, It is adhesively fixed the display devices such as such as liquid crystal display 60 via such as jointing material such as transparent adhesion band 61.Additionally, as this The touch panel of projection type electrostatic capacity type is planted, for example, as it is known that the touch panel disclosed in following patent documents 1.

Prior art literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2011-90443 publications

The content of utility model

Problem to be solved in the utility model

However, the touch panel disclosed in patent document 1, located at the wiring lead of the electrode portion 53 at the back side of substrate 52 Portion 57 is disposed in the region (periphery) beyond operating area, and is provided with so that user can't see from the operation surface side of touch panel The hiding decorative layer 58 of mode.

However, for the design of electronic equipment that does not hinder to carry touch panel, it is necessary to tone according to housing section 55 come The color of decorative layer 58 is matched, but the operation of the tone between the different part of matching material is extremely difficult.Separately Outward, due to decorative layer to be set 58, the process number of touch panel increases, therefore also there is a problem of that manufacturing cost is improved.

In addition, the touch panel of patent document 1 turns into is embedded in housing section 55 and via adhering part 61 by sensor portion 54 The structure being adhesively fixed, therefore there are when by the strong impact such as falling sensor portion 54 from asking that housing section departs from Topic.

In addition, the electrode portion (first electrode, second electrode) 53 of the sensor portion 54 of touch panel 51 from end via drawing Go out wiring part 57 to be connected with control IC (not shown), but when wiring lead portion 57 is exposed to outside and is exposed in air, Corrosion is susceptible to, the possibility of broken string is there are, accordingly, as its countermeasure, in the past, to cover the whole of wiring lead portion 57 The mode in face, the protective layer 59 that formation is made up of transparent insulating film.

However, to foring the protective layer 59 of transparent insulating film under conditions of hot and humid (for example, 85 DEG C, 85%) After touch panel 51 is attempted carrying out benchmark test, learn：According to the specification of protective layer, process over time, from outer The moisture in portion reaches wiring lead portion 57 by the protective layer 59 with penetrability, there is the possibility for causing the corrosion of wiring lead portion 57 Property.Therefore, for the structure for being only use protective layer 59 covering wiring lead portion 57 merely, it is proposed that further improve extraction and match somebody with somebody The demand of the corrosion resistance in line portion 57.

The utility model is made in view of the above problems, its object is to provide excellent impact resistance and need not set Put decorative layer from the excellent touch panel of operation surface side observation design.

Means for solving the problems

To achieve these goals, the first method that the utility model is related to is a kind of touching for projection type capacitance-type Panel is touched, it possesses：On the face relative with operating surface of the substrate with translucency, for being made up of multiple electrodes row respectively The sensor portion that one electrode and second electrode are formed so that state of insulation intersects；And clip the housing of the sensor portion Portion,

The touch panel of the projection type capacitance-type is characterised by,

Using the operating surface of the sensor portion as face side, in the face side of the substrate, to cover the substrate The first electrode and the mode in the distribution region in the wiring lead portion of the second electrode arranged in rear side, are formed with scarce Oral area,

The housing section in the mode coplanar with the substrate, with cover while the notch part clipped from table it is described The mode of the outer edge of substrate passes through molding resin material.

The second method that the utility model is related to is characterised by, in the touch panel that first method is related to, the housing Portion is molded in the way of at least covering the surface in the wiring lead portion.

The effect of utility model

According to first method of the present utility model, carried out without being set in the way of it cannot see that wiring lead portion from outside The decorative layer of masking, it becomes possible to cover wiring lead portion, therefore manufacturing cost reduction.Further, since housing section is pressed from both sides with from table The mode for the outer edge of substrate is molded, and substrate from housing is caused in the absence of due to the strong impact such as falling therefore, it is possible to provide The worry of portion's disengaging, reliability touch panel high.

According to second method of the present utility model, because housing section is at least covering the region in the wiring lead portion of each electrode Mode be molded, wiring lead portion is integrally covered by resin, therefore is difficult to pass through from outside moisture, can be to wiring lead The corrosion in portion plays sufficient effect.

Brief description of the drawings

Fig. 1 (a) is the top view of the sensor portion that the touch panel that the utility model is related to is observed from rear side.Fig. 1 (b) It is the line A-A amplification view of Fig. 1 (a).

Fig. 2 (a) is the figure of of the plane for representing the touch panel that the utility model is related to, and Fig. 2 (b) is Fig. 2 (a) Line B-B enlarged partial sectional view.

Fig. 3 (a) and Fig. 3 (b) are the figures of the formation example for representing the notch part being formed on substrate.

Fig. 4 is the enlarged partial sectional view of of the mounting structure of the touch panel for representing conventional.

Specific embodiment

Hereinafter, it is explained in detail with reference to the accompanying drawings for implementing implementation method of the present utility model.The utility model is not limited to this Implementation method, those skilled in the art wait be based on the implementation method it is conceivable that enforceable other modes, embodiment and Application technology etc. is all contained in the range of the utility model.

Additionally, in this manual, in the following description for carrying out referring to the drawings, to represent that direction uses to position In the case of the term of upper and lower, left and right, these terms observe the upper and lower, left and right one during each figure with user as illustrated Cause.

The touch panel 1 of present embodiment is employed the electricity near finger tip when finger tip is close from two electrodes series in length and breadth The position coordinates that the change of the static capacity of pole is turned on touch panel 1 come it is detecting, can carry out finger tip multiple spot detection Projection type capacitance-type.

First, the structure of the touch panel 1 being related on the utility model, 1~Fig. 3 of reference picture is illustrated.Additionally, closing In the touch panel 1 of present embodiment, the rectangle that is shaped as when making vertical view is illustrated to illustrate, but to its shape And be not construed as limiting, for example can also be the shapes such as square, circle, ellipse, polygon.

As shown in Fig. 1 (a), touch panel of the present embodiment 1 is generally constructed to be possessed：Configuration electrode portion 12 and shape Into sensor portion 2, the electrode portion 12 is by (relative with the surface as operating surface at the back side of the substrate 11 with translucency Face) on formed first electrode 13 and second electrode 14 constitute；And clip biography in above-below direction (direction in the table of substrate 11) The housing section 3 that insert injection molding is obtained in the state of sensor portion 2.

As shown in Fig. 1 (b), in sensor portion 2, using the substrate 11 of rectangular plate-like as base portion.Substrate 11 is by with printing opacity The Ins. ulative material of property is formed, for example, using glass type or membrane type.As glass type substrate 11, for example, using alkali-free glass, Soda-lime glass, alumina silicate glass etc..In addition, as membrane type substrate 11, for example, using polyethylene terephthalate (PET) the resinous film such as.

In the back side (face of the opposition side relative with the face with finger-tip operated of substrate 11：Hereinafter referred to as operate opposite face) 11a is formed with as the first electrode 13 and second electrode 14 of electrode portion 12.First electrode 13 is, will such as ITO Etc. (IndiumTinOxide) nesa coating is etched after using photoetching technique etc., resist (resist) is patterned Treatment, forms as the row electrode that multiple is for example arranged with the longitudinal direction (X-direction) of Fig. 1.

Second electrode 14 is by nesa coatings such as such as ITO (IndiumTinOxide) in the same manner as first electrode 13 Etching process is carried out after will be Resist patterning using photoetching technique etc., is arranged as example in the transverse direction (Y-direction) of Fig. 1 There is the row electrode of multiple and formed.

In addition, being illustrated to the forming method of electrode portion 12, first, formed on the operation opposite face 11a of substrate 11 Along Fig. 1 (a) longitudinal direction (X-direction) extend multiple first electrodes 13 and with split state along Fig. 1 (a) transverse direction (Y side To) configuration multiple electrodes film 14a.Next, the first electrode 13 of the cross part 15 in first electrode 13 and second electrode 14 Upper formation insulating barrier 16.Insulating barrier 16 makes to be electrically insulated between first electrode 13 and second electrode 14, for example, by acrylic resin etc. Insulating materials is constituted.Next, as shown in Fig. 1 (b), bridge is utilized in the transverse direction (Y-direction) of Fig. 1 (a) across first electrode 13 The connection multiple electrodes film 14a of distribution (bridging distribution) 17 is met, second electrode 14 is formed.Now, second electrode 14 is connected and composed Bridge joint distribution 17 between electrode film 14a, 14a by way of on insulating barrier 16 carrying out distribution.Also, in the present embodiment In, the rectangle part of inner side of Fig. 2 (a) of the electrode portion 12 based on first electrode 13 and second electrode 14 will be formed with as biography The operating area E1 in sensor portion 2.

Additionally, in the forming method of above-mentioned electrode portion 12, using bridge joint distribution 17 in second electrode 14, but Can be set to make first electrode 13 and the reverse structure of second electrode 14, bridge joint distribution 17 is used in first electrode 13.In addition, As long as first electrode 13 and second electrode 14 at least cross part 15 can also be configured in an electrode by insulation Insulating barrier 16 is formed in the entire surface of (first electrode 13 or second electrode 14), another electrode (the is formed on the insulating barrier 16 Two electrodes 14 or first electrode 13).

As shown in Fig. 1 (a), the first electrode 13 and second electrode 14 formed on the substrate 11 using above-mentioned forming method Respective end the end of substrate 11 is led to by wiring lead portion 18, and enter with control IC (control circuit) (not shown) Row distribution is connected.

As shown in Fig. 2 (a), wiring lead portion 18 is the wiring lead in the "U" shape part in the outside of operating area E1 The distribution drawn from the respective end of first electrode 13 and second electrode 14 in region E2 (shadow region in figure), for example, The metal films such as MAM (Mo/Al/Mo), APC (AgPdCu etc.) are formed by sputtering method, the pattern that will specify by etching method Formed to the end of substrate 11.

In this way, in sensor portion 2, in order to ensure as the precision of position sensor, first be made up of linear electrode Electrode 13 and second electrode 14 with the state that is electrically insulated on the substrate 11 with the rectangular configuration of XY, be not it is separately detect which is Nearby, but separately detect is which X-direction electrode and which Y-direction electrode for which part on one electrode, and And can be according to its intersection point calculation position.

In addition, the peripheral end portion of the face side (the operating surface 11b sides of substrate 11) in substrate 11, to cover from first electrode 13 and second electrode 14 lead to substrate 11 operation opposite face 11a wiring lead portion 18 wiring lead region E2 side Formula, forms notch part 11c.

For notch part 11c, notch part 11c is formed with above-mentioned condition by the operating surface 11b sides of substrate 11, right When housing section 3 carries out insert injection molding, notch part 11c is covered by resin material.Thus, when touch panel 1 is formed as, Wiring lead portion 18 not visible from outside, the decorative layer without being provided for covering wiring lead portion 18 as conventional device, Can be realized as and decorative layer identical effect is set.

Moreover it is preferred that for notch part 11c, after insert injection molding, in order that substrate 11 will not be due to using The expansion of the housing section 3 caused by environment and depart from from housing section 3, for example, as shown in Fig. 3 (a), Fig. 3 (b), in order that and base The contact area of plate 11 increases, with the more outward ladders (stage portion) for forming regulation shape of the operating area E1 than substrate 11 Mode and cut.

In addition, in the case where cutting is for such step shape, to the shape and platform of such stepped portion shown in Fig. 3 The size in rank portion is not particularly limited, and can suitably be set according to size of the size of touch panel 1 and the perimeter of housing section 3 etc. Meter.

Housing section 3 is for example made up of the thermoplastic synthetic resin such as general-purpose plastics, engineering plastics.Housing section 3 is by as follows Mode is molded, i.e. will turn into the operating surface 11b sides of the operating area E1 (region of finger-tip operated) of sensor portion 2 as surface, In the way of covering the notch part 11c of the operating surface 11b sides of peripheral end portion of substrate 11 formation, substrate is clipped from upper and lower (in table) 11 peripheral end portion, seamless mode is turned into make the operating surface 11b of the surface 3a of housing section 3 and substrate 11 coplanar, is passed through Resin material carries out insert injection molding.

In addition, housing section 3 with least cover substrate 11 operation opposite face 11a sides formed (the first electrode of electrode portion 12 13rd, second electrode 14) wiring lead portion 18 wiring lead region E2 mode, carry out insert injection molding.Thus, draw Wiring part 18 is directly covered by housing section 3, therefore, it is harsh as the benchmark test under conditions of wiring lead portion 18 Will not corrode, ensure that the reliability of product.

Also, as shown in Fig. 2 (b), in the touch panel 1 for constituting as described above, the operation opposite face 11a (shapes of substrate 11 Into the face for having sensor portion 2) display device is bonded and fixed to (for example, liquid crystal via such as adhesive linkage such as transparent adhesion adhesive tape 19 The various display devices such as display, EL display) 20.

Thus, display device 20 is equipped on by using touch panel 1 as a kind of mode of input unit, display can be made Device 20 is used as display device (touch-panel device) function with touch panel.

As described above, in the touch panel 1 of present embodiment, being matched somebody with somebody with the extraction for covering first electrode 13 and second electrode 14 The mode of the wiring lead region E2 in line portion 18, the peripheral end portion in the operating surface 11b sides of substrate 11 forms notch part 11c, and And, to cover notch part 11c and make the surface 3a of housing section 3 and the coplanar modes of operating surface 11b, housing section 3 will be sensed The operating area E1 in device portion 2 in the way of from the peripheral end portion for clipping substrate 11 up and down, is entered as face side by resin material Row insert injection molding makes.

Thus, without setting the decorative layer for being covered in the way of it cannot see that wiring lead portion 18 from outside, with regard to energy Wiring lead portion 18 is enough covered, therefore, it is possible to provide following touch panel：Reduce manufacturing cost, in the absence of such as conventional device In as the embedded structure based on adhesive linkage due to the worry that intense impact causes substrate 11 to depart from from housing section 3 such as falling, Reliability is high.

In addition, housing section 3 is at least covering the wiring lead portion 18 of each electrode of first electrode 13 and second electrode 14 The mode in region carries out insert injection molding, and wiring lead portion 18 is overall to be covered by resin, therefore is difficult to from outside moisture Pass through, sufficient effect can be played to the corrosion in wiring lead portion 18.

The explanation of reference

1 ... touch panel

2 ... sensor portions

3 ... housing sections

3a ... surfaces

11 ... substrates

11a ... the back sides (operation opposite face)

11b ... surfaces (operating surface)

11c ... notch parts

12 ... electrode portions

13 ... first electrodes

14 ... second electrodes

14a ... electrode films

15 ... cross parts

16 ... insulating barriers

17 ... bridge joint distributions

18 ... wiring lead portions

E1 ... operating areas

E2 ... wiring leads region

Claims (2)

1. a kind of touch panel of projection type capacitance-type, it possesses：In the substrate with translucency and operating surface phase To face on, the biography for being formed so that state of insulation intersects by the multiple electrodes first electrode that constitutes of row and second electrode respectively Sensor portion；And clip the housing section of the sensor portion,

The touch panel of the projection type capacitance-type is characterised by,

Using the operating surface of the sensor portion as face side, in the face side of the substrate, to cover the back side of the substrate The first electrode and the mode in the distribution region in the wiring lead portion of the second electrode arranged on side, form jagged Portion,

The housing section clips the base to cover in the mode coplanar with the substrate from table while the notch part The mode of the outer edge of plate passes through molding resin material.

2. touch panel according to claim 1, it is characterised in that

The housing section is molded in the way of at least covering the surface in the wiring lead portion.