CN104679309B - Touch panel and its manufacturing method - Google Patents
Touch panel and its manufacturing method Download PDFInfo
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- CN104679309B CN104679309B CN201310615573.0A CN201310615573A CN104679309B CN 104679309 B CN104679309 B CN 104679309B CN 201310615573 A CN201310615573 A CN 201310615573A CN 104679309 B CN104679309 B CN 104679309B
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- touch panel
- sensing circuit
- matching layer
- circuit layer
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The embodiment of the present invention provides a kind of touch panel, comprising: a substrate；One sensing circuit layer, is laid on the substrate；And one refraction matching layer, be laid in the side of the sensing circuit layer far from the substrate；Wherein, which uses the bump design of multiple periodic arrangements on the surface of the side far from the sensing circuit layer, and the spacing between the top of the adjacent two equal convex blocks is less than 400 nanometers.In addition, the present invention also provides a kind of manufacturing methods of touch panel.
Description
Technical field
The present invention is about a kind of touch technology, and especially a kind of touch panel and its manufacturing method.
Background technique
Recently as the technology development of touch panel, touch panel widely applies in all kinds of electronic devices, example
Such as mobile phone, laptop computer and palm PC.Touch panel (touch panel) generally can be with display panel (display
Panel it) is integrated and touch display function is reached using the I/O Interface as electronic device for touch control display screen.According to
This, user can pass through finger or touch-control sensing object (such as stylus) touching touch control display screen controls electronic device, right
The function of electronic device should be manipulated.
Existing touch panel usually passes through a glue-line and is bonded with a display panel, and touch panel generally includes at least one
Transparent substrate and a sensing circuit layer, include multiple hierarchical structures in total, and each level level adjacent thereto is deposited
Difference on material or pattern form, therefore the refractive index of the two has differences, when the light from display panel is through upper
When stating the interface between level, it will deviation and reflection occurs, is greater than so as to cause the amount light for entering touch panel from touch-control
Panel project amount light, that is to say, that since refractive index has differences between different levels, light interface occur refraction and
Reflection, causes the light transmittance of touch panel to decline, and then influences the display effect of display panel.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of touch panel, through the refraction matching layer for adding one layer of tool convex block
Increase the penetrance of light in the structure of touch panel.
The embodiment of the present invention provides a kind of touch panel characterized by comprising a substrate；One sensing circuit layer is laid
In on the substrate；And one refraction matching layer, be laid in the side of the sensing circuit layer far from the substrate；Wherein, which matches
Layer far from the sensing circuit layer side surface use multiple periodic arrangements bump design, and adjacent two this etc. it is convex
Spacing between the top of block is less than 400 nanometers.
The present invention in one embodiment, which includes plural sensing electrode axis and is electrically connected those
The multiple metal wire of sensing electrode axis.
The present invention in one embodiment, which is covered in those sensing electrodes of the sensing circuit layer
On axis, and directly contact those sensing electrode axis.
The present invention in one embodiment, which fills up those sensing electrodes on the sensing circuit layer
Gap between axis.
The present invention in one embodiment, wherein the refraction matching layer is bonded with a display panel, and the substrate is
Once the substrate for crossing reinforcing.
The present invention in one embodiment, further include: a cover board is bonded, wherein the substrate with the refraction matching layer
Relatively another surface close to the surface of the sensing circuit layer is fitted with a display panel.
The present invention in one embodiment, those convex blocks are equidistantly to arrange.
The present invention in one embodiment, those convex blocks are non-equidistant arrangements.
The present invention in one embodiment, the spacing between adjacent grade convex blocks top is between 10 nanometers two-by-two
To between 150 nanometers.
The present invention in one embodiment, the height of each convex block is between 50 nanometers to 500 nanometers.
The present invention in one embodiment, the height of those convex blocks is identical.
The present invention in one embodiment, those sensings on the refractive index of the refraction matching layer and the sensing circuit layer
The refractive index of electrode axis is identical.
The present invention in one embodiment, the material of the refraction matching layer includes silica (SiO2), titanium dioxide
One of titanium (TiO2), niobium pentaoxide (Nb2O5) and photoresist.
The embodiment of the present invention provides a kind of manufacturing method of touch panel, this manufacturing method includes the following steps.Form one
Sensing circuit layer is on a substrate；And
A refraction matching layer is formed in the side of the sensing circuit layer far from the substrate；
Wherein, which uses the convex block of multiple periodic arrangements on the surface of the side far from the sensing circuit layer
It designs, and the spacing between the top of the two neighboring equal convex blocks is less than 400 nanometers.
In conclusion touch panel provided by the embodiment of the present invention, this touch panel can be recessed by one layer of tool one is laid
The refraction matching layer on convex surface reduces the reflecting effect to light, increases the penetrance of light, in touch panel and display panel
Collocation is in application, the degree that touch panel influences the display effect of display panel can be reduced.
For the enabled feature and technology contents for being further understood that the present invention, please refer to below in connection with it is of the invention specifically
Bright and attached drawing, but these explanations are only rather than to appoint to interest field of the invention for illustrating the present invention with institute's accompanying drawings
What limitation.
Detailed description of the invention
Figure 1A is the diagrammatic cross-section for the touch panel that one embodiment of the invention provides.
Figure 1B is the diagrammatic cross-section for the touch panel combining display panel that first embodiment of the invention provides.
Fig. 2A is the structural schematic diagram for the refraction matching layer that first embodiment of the invention provides.
Fig. 2 B is the A-A diagrammatic cross-section of refraction matching layer shown in Fig. 2A.
Fig. 2 C is the top view for the part refraction matching layer that first embodiment of the invention provides.
Fig. 3 A is the diagrammatic cross-section for the refraction matching layer that second embodiment of the invention provides.
Fig. 3 B is the top view for the part refraction matching layer that second embodiment of the invention provides.
Fig. 4 is the top view for the part refraction matching layer that third embodiment of the invention provides.
Fig. 5 is the top view for the part refraction matching layer that fourth embodiment of the invention provides.
Fig. 6 is the top view for the part refraction matching layer that fifth embodiment of the invention provides.
Fig. 7 is the diagrammatic cross-section for the touch panel combining display panel that sixth embodiment of the invention provides.
Fig. 8 is the production method flow diagram for the touch panel that seventh embodiment of the invention provides.
Specific embodiment
Hereinafter, it will illustrate that embodiments of the present invention carry out the present invention is described in detail by schema, and it is identical in schema
Reference number can be used to indicate similar component.In addition, in various embodiments described below, so-called orientation "upper" and
"lower" is intended merely to indicate the relative positional relationship between component, be not intended to limit the invention.
Figure 1A is please referred to, Figure 1A is painted the diagrammatic cross-section of touch panel provided by the invention.Touch panel 10 includes base
Plate 11, sensing circuit layer 12 are laid on substrate 11, refraction matching layer 13 be laid in sensing circuit layer 12 far from the substrate 11 it
Side；Wherein, refraction matching layer 13 is set on the surface of the side far from sensing circuit layer 12 using the convex block 133 of multiple periodic arrangements
Meter, and the spacing d between the top of the adjacent two equal convex blocks 133 is less than 400 nanometers.
Structure of the touch panel in different specific embodiments has differences in the present invention, comes below by way of specific embodiment
It is illustrated.
(first embodiment)
Figure 1B is please referred to, the section that Figure 1B is painted the touch panel combining display panel of first embodiment of the invention offer shows
It is intended to.In this present embodiment, the touch panel 20 is combined with display panel 100, is e.g. combined in a manner of bonding, but
The invention is not limited thereto.
The touch panel 20 includes substrate 21, sensing circuit layer 22, refraction matching layer 24, bonding coat 25, shielding layer 26
And cover board 27 (cover glass).In addition, the substrate 21 of the present embodiment, sensing circuit layer 22, refraction matching layer 24, bonding
Layer 25, shielding layer 26 are to be sequentially disposed at display panel 100 and cover board 27.
Substrate 21 may be, for example, transparent glass substrate or plastic base.The lower surface of substrate 21 can bind mode and show
Show that the upper surface of panel 100 combines, sensing circuit layer 22 is formed in the upper surface of substrate 21, and in other words, substrate 21 is close to sense
Relatively another surface on the surface of slowdown monitoring circuit layer 22 is fitted with display panel 100.
Sensing circuit layer 22 includes the first conductive layer 221, insulating layer 223, the second conductive layer 225 and plain conductor 227,
Wherein the first conductive layer 221 and the second conductive layer 225 form a plurality of sensing electrode axis (not shown) being intertwined, and every
Sensing electrode axis insulate each other, and those sensing electrode axis are electrically connected those plain conductors 227.Specifically, first
Conductive layer 221 includes a plurality of sensing electrode axis along first axis (such as X-axis) direction arrangement and plural number along the second axial (example
Such as Y-axis) direction arrangement sensing unit (not shown), the second conductive layer 225 includes that plural number is electrically connected line (not shown), and plural number is electric
Property connecting line be separately connected two it is adjacent on state sensing unit, to form a plurality of sensing electrode along the second axial direction arrangement
Axis.Insulating layer 223 is laid in the sensing electrode axis along first axis arrangement and between the sensing electrode axis along the second axial alignment,
So as to be electrically insulated between those sensing electrode axis.
The a plurality of sensing electrode axis region of first conductive layer 221 and the second conductive layer 225 composition is sensing circuit layer
22 sensing region (not shown).Region other than sensing region, the i.e. region of laying metallic circuit 227 are sensing circuit layer 22
Neighboring area.Metallic circuit 227 and sensing electrode axis are electrically connected, to transmit those sensing electrode axis and rear end control electricity
Signal between the (not shown) of road.
It is noted that the first conductive layer 221 can be by transparent conductive film through exposure (exposure), development
(develop) and etching (etch) etc. photo-mask process are formed on substrate 21.The material of the transparent conductive film may be, for example,
Nano metals or the resistance to rice such as indium tin oxide (Indium tin oxide, ITO), indium-zinc oxide, aluminium zinc oxide, nano silver
The transparent conductive materials such as carbon pipe.The sense unit actual circuit design requirement is multilateral shape block, such as rectangular, long
Rectangular, diamond shape, triangle, hexagon or octagon etc., the present embodiment is not intended to limit.
The material of plain conductor 227 may include the conductive metals such as copper alloy, aluminium alloy, gold, silver, aluminium, copper, molybdenum or conductive conjunction
Gold.And it can be in the way of physical vapour deposition (PVD) (PVD) or chemical vapor deposition (CVD) and formed.
The material of second conductive layer 225 can be identical as the material of the first conductive layer 221, or the material with plain conductor 227
It is identical, however, the present invention is not limited thereto.
Refraction matching layer 24 is laid on sensing circuit layer 22, and the two directly contacts.More specifically, matching layer is reflected
The sensing region of 24 covering sensing circuit layers 22 and neighboring area.
Bonding coat 25 is laid on refraction matching layer 24, cover board 27 and refraction matching layer 24 to fit.In this reality
It applies in example, bonding coat 25 can be by optical cement (Optical Clear Adhesive, OCA) and realize.In in practice, bind
Layer 25, which can be by acryl glue or glue, to be realized, the present embodiment is not intended to limit.
Shielding layer 26 is the lower surface for being set to cover board 27, is set between bonding coat 25 and cover board 27.Shielding layer 26 is one
Dark border structure (Black Mask) makes metal to cover the metallic circuit 227 that the neighboring area of sensing circuit layer 22 is laid
Route 227 will not be revealed in the upper surface of cover board 27.In other words, shielding layer 26 at least with the metal laid on sensing circuit layer 22
The neighboring area of route 227 is overlapped.The material of shielding layer 26 includes polyester film or for example poly- methyl-prop of transparent insulation material film
E pioic acid methyl ester (PMMA), polycarbonate (PC), polyethers resinoid (PES), polyethylene terephthalate (PET) and polyimide
(PI) etc., it can be selected according to needed for actual processing with the considerations of refractive index, the present embodiment is not intended to limit.
Cover board 27 is the structure to protect touch panel 20, to prevent sensing circuit layer 22 from damaging.The upper table of cover board 27
Face carries out touch control operation for user.Cover board 27 can be by transparent glass, transparent reinforced glasses or transparent plastic substrate Lai real
It is existing.
It is described further below for the structure of refraction matching layer 24, referring to figure 2. A~Fig. 2 C, and referring concurrently to
Figure 1B.Fig. 2A is painted the structural schematic diagram of the refraction matching layer of first embodiment of the invention offer.Fig. 2 B is painted folding shown in Fig. 2A
Penetrate the A-A diagrammatic cross-section of matching layer.Fig. 2 C is painted the top view of the part refraction matching layer of first embodiment of the invention offer.
In this present embodiment, as shown in Figure 2 A, the surface for reflecting matching layer 24 uses the convex block of multiple periodic arrangements
245 designs, those convex blocks 245 are periodically arranged.In the present embodiment, convex block 245 is axial in first axial direction or second
Direction is arranged on a surface of refraction matching layer 24 in a manner of equidistant matrix arrangement, and 245 top direction of convex block
Cover board 27.Convex block 245 is Chong Die with sensing circuit layer 22, that is to say, that area shared by those convex blocks 245 on refraction matching layer 24
Domain and the shared region of those sensing electrode axis and plain conductor 227 on sensing circuit layer 12 overlap.
It is worth noting that, in other embodiments of the present invention, because the plain conductor 227 in sensing circuit layer 22 can be saturating
It crosses shielding layer 26 to be covered, stops shielded layer 26 through the light of plain conductor, touch panel 20 will not be penetrated, because
This, those sensing electrodes in sensing circuit layer 22 can be corresponded only to by reflecting the shared region of those convex blocks 245 on matching layer 24
Sensing region shared by axis, in other words, refraction matching layer 24 are only covered on the sensing electrode axis of sensing circuit layer 22.Refraction matching
The region shared by those convex blocks 245 on layer 24 can be at least Chong Die with those sensing electrode axis on sensing circuit layer 22, changes speech
It, the shared region of convex block 245 also may be slightly larger than region shared by those sensing electrode axis on sensing circuit layer 22.
In this embodiment, the shape of each convex block 245 is essentially cylindrical body, but the shape of each convex block 245 also may be used
For cone or pyramid shape etc., the present embodiment is not intended to limit.The height of each convex block 245 is h1.The shape of each convex block 245
Shape, size and substantial height h1 are identical, wherein substantially the same indicate identical, or in certain acceptable error model
In enclosing.In addition, being spaced a preset spacing d1 between equal 245 top of convex blocks per adjacent this two-by-two.
It is worth noting that, convex block 245, which is formed by convex-concave surface, makes the folding for reflecting matching layer 24 for optical angle
Penetrating rate is consecutive variations, and when refraction matching layer 24 is set between sensing circuit layer 22 and bonding coat 25, light is by sensing electricity
Road floor 22 enters the light of bonding coat 25 through superrefraction matching layer 24, since the refractive index of refraction matching layer 24 is with progressive gentle
Mode changes rather than precipitous variation, so that reflection of the incident light in interface can be close to zero, deviation can will seldom occur for light
Or reflection, it is directly entered bonding coat 25.
In order to make incident light view refraction matching layer 24 realize the effect of continuous interfacial, those adjacent convex blocks 245 are pushed up two-by-two
Spacing d1 between portion need to be at least below visible light (visible light) wavelength, i.e., and 400 nanometers to 700 nanometers.Those convex blocks
Spacing d1 between 245 tops should be less than the wavelength of incident light, and by taking the wavelength of visible light as an example, d1 answers small 400 nanometers (nm).It changes
Yan Zhi, the spacing between those adjacent 245 tops of convex block is smaller two-by-two, can more make the second of incident light view refraction matching layer 24
243 upper protruding block 245 of face is continuous interfacial, reduces reflection.Preferably, spacing range between the top of adjacent projections 245 can be between
Between 10 nanometers to 150 nanometers.But the spacing d1 can be arranged according to actual demand and process capability.Each convex block 245
Height h1 be preferably between 50 nanometers to 500 nanometers.
The material for reflecting matching layer 24 can include silica (SiO2), titanium dioxide (TiO2), five oxygen for insulating materials
Change one of two niobiums (Nb2O5) and photoresist or combinations thereof.In preferable embodiment, refraction matching layer 24 fills up sense
Gap on slowdown monitoring circuit layer 22 between sensing electrode axis, refraction matching layer 24 can be by being etched on filling sensing circuit layer 22
Region reduces the region being etched tool and the refractive index difference in the region for being equipped with sensing electrode axis, and reduce sensing electrode can
Diopter, therefore the refraction with sensing electrode in sensing region in sensing circuit layer 22 preferably can be selected in the material for reflecting matching layer 24
The material that rate matches, further to reduce the visibility of sensing electrode, in other words, and in the preferred embodiment, refraction
The refractive index of matching layer 24 and the refractive index of the sensing electrode axis on sensing circuit layer 22 are substantially the same, specifically, can be by
By selecting the material same or similar with the refractive index of substrate (such as glass substrate or transparent conductive film) of sensing electrode is formed,
Such as the material of tool refractive index 1.7~1.8 is to correspond to ITO nesa coating or have the material of refractive index 1.5 with corresponding and glass
Glass substrate reflects matching layer 24 to make, so that the folding of the refractive index and sensing electrode in sensing circuit layer 22 of refraction matching layer 24
It is substantially the same to penetrate rate.
Refraction matching layer 24 can be covered on sensing circuit layer 22 with coating method, and convex block 245, which can be to penetrate, to be had
After the plate fixture on the surface of nanometer column bump, is imprinted, such as wire mark forms the male and fomale(M&F) of nano-scale, resolidification
Molding.
Below for the operation principles simple declaration of refraction matching layer 24.
When the incident light that is parallel to each other, such as the light from display panel, it is multiple by being laid on refraction matching layer 24
When convex block 245, because direction normal (normal line) of each convex block 245 is inconsistent so that incident light can in different directions without
The generation of systematicness is reflected, that is, generates diffusing reflection (diffuse reflection) phenomenon.It is incident under diffusing reflection phenomenon
The reflection light of light can overlapped reflected back toward refractive matching layer 24, increase incident light, and then increase emergent ray amount.Again
Person makes refractive index because aforementioned non-uniform surface can make incident light view refraction matching layer 24 and adjacent medium continuous interfacial
In with gradual variation rather than precipitous variation, to reduce the reflection of incident light, so that the light by touch panel is bright
Increase, improve the light transmittance of touch panel, reduces influence of the touch panel to display effect.
In in practice, also settable multilayer reflects matching layer 24 to touch panel 20.For example, touch panel 20 may include
First refractive matching layer (not shown) and the second refraction matching layer (not shown).The table of the not set convex block of first refractive matching layer
Face can be in contact with sensing circuit layer 22.The surface of the second refraction not set convex block of matching layer is in contact with display panel 20.In
In another embodiment, the surface of the second refraction not set convex block of matching layer can be in contact with sensing circuit layer 22.
It is noted that Figure 1B is only the schematic diagram of 20 structure of touch panel, it is not intended to limit the invention.Similarly,
Fig. 2A~Fig. 2 C is only to illustrate the structural schematic diagram of refraction matching layer 24, is not intended to limit the invention.
(second embodiment)
Above-mentioned multiple convex blocks 245 are arranged on refraction matching layer 24 in a manner of equidistant, it is notable that multiple convex
Block 245 can also be arranged with matrix between non-wait, wherein non-equidistant arrangement refers to those convex blocks in first axis and the second axis
It is upwards all that non-equidistant arrangement or those convex blocks are axial non-equidistant in one of them of first axis and the second axial direction
Arrangement, and in another axial first-class spacing arrangement, embodiment shown in A and Fig. 3 B referring to figure 3., Fig. 3 A and Fig. 3 B is should
A little convex block non-equidistant arrangements in first axis, and in the second axial first-class spacing arrangement.It is real that Fig. 3 A is painted the present invention second
The diagrammatic cross-section of the refraction matching layer of example offer is provided.Fig. 3 B is painted the part refraction matching layer of second embodiment of the invention offer
Top view.
The difference of the refraction matching layer 24 of refraction matching layer 24a and Fig. 2A of Fig. 3 A is, in first axis, refraction
With on layer 24a two-by-two at the top of adjacent those convex blocks 245a between spacing and unequal.As shown in Fig. 3 A and Fig. 3 B, first
In axial direction, the spacing between the top those convex blocks 245a that the middle section of refraction matching layer 24a is laid is less than neighboring area cloth
If those convex blocks 245a at the top of between spacing.Spacing between at the top of those convex blocks 245a gradually increases from inside to outside.
The design of refraction matching layer 24a can be applied to the touch panel 20 of Figure 1B, corresponding border area 22 last week of sensing circuit layer
Spacing between at the top of those convex blocks 245a in domain is greater than the top those convex blocks 245a of sensing region on corresponding sensing circuit layer 22
Spacing between portion.
In detail, the spacing between the top convex block 245a, the i.e. repetition period of convex block 245a arrangement will affect refraction
Effect with layer 24a antireflection.It is shorter when the repetition period of convex block 245a, i.e., more scattering lights can be generated, and can more make
Incident light can not recognize the interface between medium to which the reflection of incident light can more be effectively reduced, and increase penetrance.Conversely, when folding
The repetition period for penetrating those convex blocks 245a on matching layer 24a is longer, and produced scattering light is fewer, and the ability of antireflection also drops
It is low.
And because in touch panel on sensing circuit layer plain conductor can the masking of shielded layer without visual, therefore can be by correspondence
Spacing between those convex blocks in plain conductor region tunes up, and the quantity for reducing those convex blocks in plain conductor region can't be made
At visually influencing, the complexity in refraction matching layer 24a production can be reduced.
It is worth noting that, how the spacing size no matter reflected on matching layer 24a between the top those convex blocks 245a sets
Meter, at the top of those convex blocks 245a between spacing must all be less than the wavelength of incident light, preferably between 10 nanometers to 150 nanometers it
Between.Fig. 3 A and Fig. 3 B are only to illustrate on refraction matching layer 24a the design method of the spacing between at the top of those convex blocks 245a, and
It is non-to limit the present invention.
(3rd embodiment)
In addition, the arrangement mode of the convex block 245 of those periodic arrangements can be each row's convex block arranged along first axis
Between misplace.Referring to figure 4., Fig. 4 is painted the top view of the part refraction matching layer of third embodiment of the invention offer.
Reflecting has multiple convex block 245b being periodically arranged on matching layer 24b.Between wantonly two adjacent projections 245b
Spacing d1 is less than the wavelength of incident light.Difference between refraction matching layer 24 shown in refraction matching layer 24b and Fig. 2 C of Fig. 4 exists
Being in the arrangement mode of those convex blocks 245b is dislocation between each row's convex block 245b of first axis arrangement.
(fourth embodiment)
In addition, above-mentioned multiple convex blocks can be realized in different sizes, referring to figure 5., Fig. 5, which is painted the present invention the 4th, to be implemented
The top view for the part refraction matching layer that example provides.
Difference between refraction matching layer 24 shown in refraction matching layer 24c and Fig. 2 C of Fig. 5 is to reflect matching layer 24c
On be laid with multiple convex block 245c and 246c being periodically arranged, the size of convex block 245c, 246c is not identical, appoint two-phase
Spacing d1 between adjacent convex block 245c, 246c is less than the wavelength of incident light, preferably between 10 nanometers to 150 nanometers.Specifically
For, it reflects and lays width W2 of the width W1 of each convex block 245c less than each convex block 246c on matching layer 24c.Namely
It says, the area of the shared refraction matching layer 24c of those convex blocks 245c is less than area shared by those convex blocks 246c.In addition, those are convex
The practical laying quantity of block 245c and 246c can be arranged according to practical process requirement.
(the 5th embodiment)
Reflecting in the present embodiment has multiple convex blocks being periodically arranged only electric with sensing on the second face of matching layer
A plurality of sensing electrode axis overlapping in sensing region in the floor of road, that is, can reach reduces sensing electrode axis in the visibility on cover board, subtracts
Cost and complexity on few processing procedure.It please refers to Fig. 6 and the portion of fifth embodiment of the invention offer is provided referring concurrently to Fig. 1, Fig. 6
Divide the top view of refraction matching layer.
The difference of the refraction matching layer 24 of refraction matching layer 24d and Fig. 2 C of Fig. 6, which is to reflect to distinguish on matching layer 24d, to be had
Visible area 247 and non-visible area domain 249.The a plurality of sensing of laying of sensing circuit layer 22 in 247 corresponding diagram 1B of visible area
The sensing region of electrode axis, rather than visible area 249 can correspond to the peripheral region of the laying plain conductor 227 of sensing circuit layer 22
Domain.
As shown in fig. 6, there are multiple convex block 245d being periodically arranged in visible area 247 on refraction matching layer 24d.
Those convex blocks 245d is formed on refraction matching layer 24 in a manner of equidistant matrix arrangement in visible area 247.And it reflects
Region is then a flat surface in non-visible area domain 249 on matching layer 24d.
In in practice, refraction matching layer 24d can utilize the photo-mask process or coating, printing etc. such as exposure, development and etching
Process reflects the rough structure in part on matching layer 24d to realize.
It is worth noting that, the shape of those convex blocks 245d on refraction matching layer 24d in visible area 247, size with
And spacing can be designed according to practical antireflection, visibility demand and process capability, Fig. 6, which is only used, to be illustrated to reflect matching layer 24d's
Structure is not intended to limit the invention.
(sixth embodiment)
Refraction matching layer of the present invention applies also for the structure of other touch panels.Fig. 7 is please referred to, Fig. 7 is painted
The structural schematic diagram for the touch panel combining display panel that sixth embodiment of the invention provides.The touch panel 30 and display surface
Plate 100 combines, and is e.g. combined in a manner of bonding.
The touch panel 30 is that single layer is touch panel structure provided (One Glass Solution, OGS).Further say,
Touch panel 30 includes substrate 31, shielding layer 32, sensing circuit layer 33 and refraction matching layer 34.The shielding layer of the present embodiment
32, sensing circuit layer 33 and refraction matching layer 34 are sequentially disposed between substrate 31 and display panel 100.
The difference of the touch panel of the touch panel and Figure 1B of the present embodiment is that substrate 31 is once the base for crossing reinforcing
Plate, the upper surface of substrate 31 is touched for user to be operated, and sensing circuit layer 33 is direct shape in the lower surface of substrate 31, refraction
It is formed in the lower surface of sensing circuit layer 33 with layer 34, and is in contact with sensing circuit layer 33, display panel is set to refraction matching
Under layer 34, in other words, refraction matching layer 34 fits with display panel 100.
In this present embodiment, sensing circuit layer 33 further comprises the first conductive layer 331, insulating layer 333, the second conductive layer
335 and plain conductor 337.Shielding layer 32 is between substrate 31 and sensing circuit layer 33, to cover on sensing circuit layer 33
Plain conductor 337 be revealed in substrate 31.33 basic framework of sensing circuit layer is identical as sensing circuit layer 22 in Figure 1B, therefore no longer
This is repeated.
Refraction matching layer 34 is in contact with sensing circuit layer 33, uses on the surface of the side far from sensing circuit layer 33 multiple
The convex block 345 of periodic arrangement designs.Those convex blocks 345 are to be periodically arranged.
Those convex blocks 345 are formed on refraction matching layer 34 in a manner of equidistant matrix arrangement.Reflect matching layer 34
The top of those convex blocks 345 is towards display panel 20.
It is worth noting that, can also have between those 345 tops of convex blocks of refraction matching layer 34 in the present embodiment different
Spacing size.In other words, the spacing between two adjacent 345 tops of convex block can be more than or less than other two adjacent convex blocks 345
Spacing between top.Those convex blocks 345 for reflecting matching layer 34 also can be different size according to actual fabrication demand.
In addition, the present invention is not intended to limit practical laying mode and the position of refraction matching layer 34, as long as refraction can be made to match
Layer 34 is in contact with the gap filled up between the sensing electrode axis of those in sensing circuit layer with sensing circuit layer, is reduced with reaching
The visibility of sensing electrode in sensing electrode axis.
It is noted that Fig. 7 is only to illustrate the embodiment that refraction matching layer is applied to monolithic glass touch-control structure.
(the 7th embodiment)
Then, the present invention separately provides a kind of production method of the touch panel of tool refraction matching layer.Please refer to Fig. 8 and simultaneously
B referring to Fig.1, Fig. 8 are painted the production method flow diagram of the touch panel of seventh embodiment of the invention offer.The touch-control of Fig. 8
The production method of panel is touch panel structure provided for making double glazing shown in Figure 1B.
In step S100, sensing circuit layer 22 is formed on substrate 21.Wherein substrate 21 may be, for example, transparent glass
Substrate or plastic base.
In detail, in being done using sputtering way sputter layer of transparent conductive film as the second conductive layer 225 on substrate 21
Such as the nano metals or the carbon of resistance to rice pipe etc. such as indium tin oxide, indium-zinc oxide or aluminium zinc oxide, nano silver, then according to institute
The conducting bridge pattern needed is utilized and is formed on substrate 21 by the photoetching makings process such as exposure, development, etching.Then, it is led in second
In electric layer 225 formed insulating layer 223, be on insulating layer 223 using another layer of transparent conductive film of sputtering way sputter do as
First conductive layer 221, then utilize according to required sensing electrode pattern and formed by the photoetching makings process such as exposure, development, etching
On substrate 21.
Then, in step S110, refraction matching layer 24 is formed in side of the sensing circuit layer 22 far from substrate 21.Wherein roll over
It penetrates matching layer 24 and uses the bump design of multiple periodic arrangements on the surface of the side far from sensing circuit layer 22, and is two neighboring
The equal convex blocks 245 top between spacing less than 400 nanometers
Penetrating matching layer 24 in a specific embodiment can be with silica (SiO2), titanium dioxide (TiO2), five oxidation two
The insulating materials such as one of niobium (Nb2O5) and photoresist or combinations thereof are laid in sensing circuit layer 22 with coating method, and
Afterwards, through the plate fixture with nanometer column protrusion surface carry out coining form nano-scale male and fomale(M&F) after, resolidification molding.
Accordingly, to form nanoscale convex block 245.
In another embodiment, refraction matching layer 24 can also be according to convex needed for male and fomale(M&F) on refraction matching layer 24
The pattern of 245 form and dimension of block is made into flat jig using the cylindric convex block of nanoscale to be made.
It is understood that after step silo, that is, forming refraction matching in other methods embodiment of the invention
The touch panel structure provided of Figure 1A can be obtained after on sensing circuit layer 22 in layer 24, further, the base in step S100
The reinforcing substrate that plate is laid with shielding layer if one, and sensing circuit layer is laid on the substrate surface where the shielding layer, then
In this way, the single-glass that Fig. 7 can be obtained is touch panel structure provided.
In step S120, the cover board 27 with shielding layer 26 is fitted in by refraction matching layer 24 by bonding coat 25,
Wherein shielding layer 24 is between cover board 27 and bonding coat 25.
Bonding coat 25 can be optical cement (Optical Clear Adhesive, OCA).In in practice, bonding coat 25 can
To be acryl glue or glue.
Cover board 27 can be transparent glass, transparent reinforced glasses or transparent plastic substrate.Shielding layer 26 is a dark border,
To cover the metallic circuit 227 of 22 neighboring area of sensing circuit layer laying, keep metallic circuit 227 not visual.
It is worth noting that, in an embodiment of the present invention, bonding coat 25 is initially formed in the cover board for having shielding layer 26
On 27, then the cover board with bonding coat 25 is set to and is reflected on matching layer 24, and bonding coat 25 is made to be located at refraction matching layer 24
Between cover board.In other embodiments of the present invention, bonding coat 25 can be initially formed in refraction matching layer 24 on, then will with hide
The cover board 27 for covering layer 26 is set on bonding coat 25, and makes shielding layer 26 between cover board 27 and bonding coat 25, with this reality
Existing cover board 27 is bonded with refraction matching layer 24.
The practical structures of above-mentioned refraction matching layer 24 can refer to shown in Fig. 2A~Fig. 6, but the present embodiment is not limited thereto.
Above-mentioned refraction matching layer 24 can also be according to the demand on production process or reducing the design method reflected carrys out birefringence
Shape, size, spacing, arrangement mode and laying mode with the convex block for forming male and fomale(M&F) on layer 24 are designed.
It is worth noting that, Fig. 8 is only to illustrate a production method of touch panel, it is not intended to limit the invention.
In conclusion touch panel provided by the embodiment of the present invention, this touch panel can be by one layer of refraction of laying
With layer in the hierarchical structure of touch panel, the refractive index difference between interface is reduced, to increase the emergent light number of touch panel
Amount, and then touch panel light transmittance is promoted, the degree that touch panel influences the display effect of display panel is reduced accordingly.
This refraction matching layer can be by the principle and incident light for generating scattering by nanoscale male and fomale(M&F) using light
The interface of male and fomale(M&F) can be regarded as a continuous interfacial so that refractive index be by it is progressive it is gentle in a manner of change rather than the side such as precipitous variation
Formula reflects to be effectively reduced, and improves penetrance.
The foregoing is merely embodiments of the present invention, are not the scope of the patents to limit to the present invention.
Claims (14)
1. a kind of touch panel characterized by comprising
One substrate；
One sensing circuit layer, is laid on the substrate；And
One refraction matching layer, is laid in the side of the sensing circuit layer far from the substrate；
Wherein, which is set on the surface of the side far from the sensing circuit layer using the convex block of multiple periodic arrangements
Meter, and the spacing between the top of the adjacent two equal convex blocks, less than 400 nanometers, the height of each convex block is arrived between 50 nanometers
Between 500 nanometers, and the refractive index of the refraction matching layer is identical as the refractive index of those sensing electrode axis on the sensing circuit layer.
2. touch panel as described in claim 1, which is characterized in that the sensing circuit layer includes plural sensing electrode axis and electricity
Property connects the multiple metal wire of those sensing electrode axis.
3. touch panel as claimed in claim 2, which is characterized in that the refraction matching layer is covered in being somebody's turn to do for the sensing circuit layer
On a little sensing electrode axis, and directly contact those sensing electrode axis.
4. touch panel as claimed in claim 2, which is characterized in that the refractive index matching layers are filled up on the sensing circuit layer should
Gap between a little sensing electrode axis.
5. touch panel as described in claim 1, which is characterized in that the refraction matching layer is bonded with a display panel, and should
Substrate is once the substrate for crossing reinforcing.
6. touch panel as described in claim 1, which is characterized in that further include:
One cover board is bonded with the refraction matching layer, wherein relatively another surface of the substrate close to the surface of the sensing circuit layer
It is to fit with a display panel.
7. touch panel as described in claim 1, which is characterized in that those convex blocks are equidistantly to arrange.
8. touch panel as described in claim 1, which is characterized in that those convex blocks are non-equidistant arrangements.
9. touch panel as described in claim 1, which is characterized in that the spacing between adjacent grade convex blocks top is two-by-two
Between 10 nanometers to 150 nanometers.
10. touch panel as described in claim 1, which is characterized in that the height of those convex blocks is identical.
11. touch panel as described in claim 1, which is characterized in that the material of the refraction matching layer includes silica
(SiO2), one of titanium dioxide (TiO2), niobium pentaoxide (Nb2O5) and photoresist.
12. a kind of manufacturing method of touch panel characterized by comprising
A sensing circuit layer is formed on a substrate；And
A refraction matching layer is formed in the side of the sensing circuit layer far from the substrate；
Wherein, which is set on the surface of the side far from the sensing circuit layer using the convex block of multiple periodic arrangements
It counts, and the spacing between the top of the two neighboring equal convex blocks, less than 400 nanometers, the height of each convex block is arrived between 50 nanometers
Between 500 nanometers, and the refractive index of the refraction matching layer is identical as the refractive index of those sensing electrode axis on the sensing circuit layer.
13. manufacturing method as claimed in claim 12, which is characterized in that after the step of forming the refraction matching layer, packet
It includes: a cover board with a shielding layer being fitted in by the refraction matching layer by a bonding coat, wherein the shielding layer, which is located at, is somebody's turn to do
Between cover board and the bonding coat.
14. manufacturing method as claimed in claim 12, which is characterized in that the material of the refraction matching layer is by silica
(SiO2), one of titanium dioxide (TiO2), niobium pentaoxide (Nb2O5) and photoresist are constituted.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615573.0A CN104679309B (en) | 2013-11-27 | 2013-11-27 | Touch panel and its manufacturing method |
| TW103212383U TWM491205U (en) | 2013-11-27 | 2014-07-11 | Capacitive touch panel |
| TW103123997A TWI564759B (en) | 2013-11-27 | 2014-07-11 | Capacitive touch panel and manufacturing thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615573.0A CN104679309B (en) | 2013-11-27 | 2013-11-27 | Touch panel and its manufacturing method |
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| Publication Number | Publication Date |
|---|---|
| CN104679309A CN104679309A (en) | 2015-06-03 |
| CN104679309B true CN104679309B (en) | 2018-12-25 |
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| CN201310615573.0A Active CN104679309B (en) | 2013-11-27 | 2013-11-27 | Touch panel and its manufacturing method |
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| Country | Link |
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| CN (1) | CN104679309B (en) |
| TW (2) | TWM491205U (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104679309B (en) * | 2013-11-27 | 2018-12-25 | 宸鸿科技(厦门)有限公司 | Touch panel and its manufacturing method |
| TWI588724B (en) * | 2015-06-18 | 2017-06-21 | 凌巨科技股份有限公司 | Touch panel |
| CN108563054B (en) * | 2015-12-08 | 2021-05-14 | 上海天马微电子有限公司 | Integrated touch display panel and touch display device |
| KR20170068823A (en) | 2015-12-10 | 2017-06-20 | 삼성전자주식회사 | Cover window protecting display panel, display apparatus using the same and method for producing the cover window |
| KR20220033576A (en) * | 2020-09-07 | 2022-03-17 | 삼성디스플레이 주식회사 | Display device |
| CN112255829A (en) * | 2020-10-22 | 2021-01-22 | Tcl通讯（宁波）有限公司 | Display panel and display device |
| TWI800307B (en) * | 2022-03-17 | 2023-04-21 | 元太科技工業股份有限公司 | Inspection tool and inspection method for a touch plate |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3900975B2 (en) * | 2002-03-06 | 2007-04-04 | オムロン株式会社 | REFLECTOR, REFLECTIVE DISPLAY DEVICE, ELECTRONIC DEVICE, LIGHT REFLECTION METHOD, AND IMAGE DISPLAY METHOD |
| TWI467214B (en) * | 2009-09-02 | 2015-01-01 | Dexerials Corp | A conductive optical element, a touch panel, an information input device, a display device, a solar cell, and a conductive optical element |
| TWI404992B (en) * | 2009-09-08 | 2013-08-11 | Wintek Corp | Composite structure and touch panel |
| WO2011065531A1 (en) * | 2009-11-30 | 2011-06-03 | 大日本印刷株式会社 | Optical film and touch panel |
| CN102855013A (en) * | 2011-06-30 | 2013-01-02 | 联胜（中国）科技有限公司 | Touch device and touch display device |
| TW201317665A (en) * | 2011-10-28 | 2013-05-01 | Subtron Technology Co Ltd | Optical touch sensing structure and manufacturing method thereof |
| CN202838257U (en) * | 2012-05-04 | 2013-03-27 | 恒颢科技股份有限公司 | Touch panel |
| CN104679309B (en) * | 2013-11-27 | 2018-12-25 | 宸鸿科技(厦门)有限公司 | Touch panel and its manufacturing method |
-
2013
- 2013-11-27 CN CN201310615573.0A patent/CN104679309B/en active Active
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- 2014-07-11 TW TW103212383U patent/TWM491205U/en unknown
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI564759B (en) | 2017-01-01 |
| TW201520850A (en) | 2015-06-01 |
| CN104679309A (en) | 2015-06-03 |
| TWM491205U (en) | 2014-12-01 |
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