CN206270921U - Touch panel - Google Patents

Abstract

The utility model provides a kind of positional precision improved when being installed on attached body and also is resistant to the touch panel of long-term use.Touch panel (1) possesses：On the face relative with operating surface 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), housing section (3) passes through molding resin material in the way of the operating surface of sensor portion (2) to be clipped the outer edge of substrate (11) as face side from table, for being installed on back side direction of the installation of attached body (21) with convex portion (20) beyond the operating area formed by first electrode (13) and the second electrode (14) of substrate (11), and it is integrally formed with housing section (3).

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, smart machine (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 from 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, at one with translucency The one side (with the relative back side in surface as operation surface side) of substrate 52 forms sensor portion 54, and by sensor portion 54 via The jointing materials such as two-sided tape 56 are embedded in the engaging recessed part 55a of housing section 55, and the sensor portion 54 has and has been laminated by along the The first electrode (for example, X electrode) of the multiple row of the nesa coating composition of (such as horizontal) extension in one direction 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 51 of above-mentioned projection type capacitance-type is installed on into such as shell on the back or printed base plate etc. When in attached body 62, installation convex portion 63 is set in addition in the rear side of the housing section 55 of touch panel 51.The installation is with convex Portion 63 is arranged to be bonded and fixed to via the jointing materials such as such as bonding agent or two-sided tape 64 rear side of housing section 55 Multiple positions of frame-shaped part 55b.Then, installation convex portion 63 is engaged with the receiver hole 62a of attached body 62 and is fixed, Thus touch panel 51 is installed on attached body 62.

Therefore, in conventional touch panel 51, it is necessary to installation convex portion 63 is fixed on into housing section 55 in advance, exist for Housing section 55 is fixed in installation convex portion 63 and numerous and diverse operation and bothersome such problem of comparing is needed.It is additionally, since Installation convex portion 63 is bonded and fixed to the frame-shaped of the rear side of housing section 55 via the adhering parts such as bonding agent or two-sided tape 64 Part 55b, therefore there are following problem：There is deviation, position relative to the fixed position of housing section 55 with convex portion 63 in installation Deterioration in accuracy is put, and with using, adhesive strength declines, it is impossible to tolerate long-term use.

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, is improved when being installed on attached body its object is to provide Positional precision and it is resistant to the touch panel of long-term use.

Means for solving the problems

In order to realize above-mentioned purpose, the first method that the utility model is related to is a kind of projection type capacitance-type Touch panel, it possesses：On the face relative with operating surface of the substrate with translucency, it is made up of multiple electrodes row respectively The sensor portion that first electrode and second electrode are formed so that state of insulation intersects；And clip the shell of the sensor portion Body portion,

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

The housing section is so that the operating surface of the sensor portion to be clipped the outer rim of the substrate as face side from table The mode in portion passes through molding resin material,

What the installation convex portion for being installed on attached body was located at the substrate is configured with the first electrode and described Back side direction beyond the operating area of second electrode, and be integrally formed with the housing section.

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 region in the wiring lead portion for being formed with the first electrode and the second electrode.

The effect of utility model

According to the utility model, because installation convex portion and housing section are integrally formed, therefore, compared with conventional structure, Installation convex portion will not produce deviation, positional precision to be also improved relative to the fixed position of housing section, additionally it is possible to tolerate Long-term use.Be additionally, since installation convex portion on the substrate be configured with the operating area of first electrode and second electrode with Outer back side direction, and be integrally formed with housing section, therefore, shrink mark will not be produced during shaping, can be by installation convex portion not It is integrally formed with housing section on the position of the operation of obstruction touch panel.

Further, since housing section at least to cover the region in wiring lead portion of each electrode in the way of be molded, therefore draw Wiring part is integrally covered by resin, therefore is difficult to pass through from outside moisture, the corrosion in wiring lead portion can be played and filled The effect divided.

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 top view of the touch panel that the utility model is related to；Fig. 2 (b) is that the line B-B of Fig. 2 (a) is locally put Big sectional view, is to represent the figure of when housing section is integrally formed installation convex portion.

Fig. 3 is to represent that the partial enlargement of that the composition of shrink mark is produced when housing section is integrally formed installation convex portion is cutd open View.

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 come it is detecting, can carry out finger tip multiple spot detection throwing Shadow type capacitance-type.

First, the structure of the touch panel 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.

Additionally, between substrate 11 and wiring lead portion 18, in order that obtain wiring lead portion 18 cannot be from the table of substrate 11 Face 11b is (with the face of finger-tip operated：Hereinafter referred to as operating surface) through observation, sandwiched forms the decorative layer 19 with shielding for side.

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.

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. using the operating area E1 (region of finger-tip operated) of sensor portion 2 as the face side (operating surface of substrate 11 11b sides), the operation opposite face 11a of the outer edge of substrate 11 is rolled to chamfer and is removed and is formed notch part 11c, from upper and lower (in table) The outer edge (four sides) of substrate 11 is clipped, so that the operating surface 11b of the surface 3a of housing section 3 and substrate 11 is coplanar and turns into seamless Mode, insert injection molding is carried out by resin material.Thus, in the absence of the insertion as conventional device using adhesive linkage Structure is like that due to the worry that intense impact causes substrate 11 to depart from from housing section 3 such as falling, using the teaching of the invention it is possible to provide high tactile of reliability Touch panel.

Now, (first is electric at least to cover the electrode portion 12 formed with the operation opposite face 11a sides of substrate 11 for housing section 3 Pole 13, second electrode 14) wiring lead portion 18 the relative regions of wiring lead region E2 mode, carry out insert injection moulding into Type.Thus, wiring lead portion 18 is directly covered by housing section 3, therefore, it is harsh as the benchmark test under conditions of draw Going out wiring part 18 will not also corrode, and ensure that the reliability of product.

In addition, in 3 insert injection molding of housing section, multiple installation convex portions 20 and housing section 3 are integrally formed.Install Be formed as example cylindric or prism-shaped with convex portion 20, the lower section beyond the operating area E1 in substrate 11 and and housing section The 3 integrally formed corners in such as rear side of housing section 3.Installation convex portion 20 is being arranged at example by inserting and being sticked in Such as receiver hole 21a of shell on the back or printed base plate attached body 21 by housing section 3 so as to when fixing and be installed on attached body 21 Use.

Additionally, installation convex portion 20 is not limited by the card realized to receiver hole 21a insertions to the installation of attached body 21 Close, as long as example installation convex portion 20 is installed on the structure of attached body 21 like that for bolt fixation etc..In addition, installing Cylindric or prism-shaped shape is not limited to convex portion 20, as long as housing section 3 is fixed and the shape of attached body 21 is installed on Shape or structure.

In addition, being not particularly illustrated, but can also be inserted using by metal according to the attached body 21 as mounting object To the installation structure of convex portion 20.

Also, in the touch panel 1 for constituting as described above, such as shown in Fig. 2 (b), 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 band 22 Show the various display devices such as device, EL display) 23.

Thus, display device 23 is equipped on by using touch panel 1 as a kind of mode of input unit, display can be made Device 23 is used as display device (touch-panel device) function with touch panel.

As previously discussed, in the touch panel 1 of present embodiment, housing section 3 is with by the operating area E1 of sensor portion 2 As display side from the mode of the outer edge (four sides) for clipping substrate 11 up and down, by resin material insert injection molding.This When, for being installed on lower section of the installation of attached body 21 with convex portion 20 beyond the operating area E1 of substrate 11, and and shell Body portion 3 is integrally formed.Thus, compared with conventional structure, installation convex portion 20 will not be sent out relative to the fixed position of housing section 3 Raw deviation, positional precision is improved, additionally it is possible to tolerate long-term use.

Here, when installation convex portion 20 and housing section 3 are integrally formed, if as shown in figure 3, making installation convex portion 20 Shaping position is in the outside of substrate 11, then bad during contraction when as by 3 insert injection molding of housing section, is using with installing Shrink mark 24 is produced on the surface 3a of the relative housing section 3 in convex portion 20.

In contrast, in the touch panel 1 of present embodiment, installing and being located at substrate 11 with the shaping position of convex portion 20 Lower section beyond operating area E1, substrate 11 is located at top of the installation with convex portion 20, therefore, in the table of the housing section 3 shown in Fig. 3 Shrink mark 24 will not be produced on face.Thus, in insert injection molding, shrink mark 24 will not be produced, installation convex portion 20 can be existed It is integrally formed with housing section 3 on the position of the operation of without prejudice to touch panel 1.

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)

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

19 ... decorative layers

20 ... installation convex portions

21 ... attached body

21a ... receiver holes

22 ... adhesive linkages

23 ... display devices

24 ... shrink marks

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,

The housing section is so that the operating surface of the sensor portion to be clipped the outer edge of the substrate as face side from table Mode passes through molding resin material,

For be installed on the installation of attached body with convex portion be located at the substrate by the first electrode and the second electrode Back side direction beyond the operating area of formation, and be integrally formed with the housing section.

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

The housing section is at least covering the region in the wiring lead portion that is formed with the first electrode and the second electrode Mode is molded.