CN103294291A - Touch control board - Google Patents
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- CN103294291A CN103294291A CN2012100562391A CN201210056239A CN103294291A CN 103294291 A CN103294291 A CN 103294291A CN 2012100562391 A CN2012100562391 A CN 2012100562391A CN 201210056239 A CN201210056239 A CN 201210056239A CN 103294291 A CN103294291 A CN 103294291A
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Abstract
The invention discloses a touch control board which comprises a base, a touch control sensing electrode and an optical compensation layer. The touch control sensing electrode is arranged on the base. The optical compensation layer is arranged on the base, and the touch control sensing electrode is covered with the optical compensation layer. The refracting index of the optical compensation layer is less than or equal to that of the touch control sensing electrode.
Description
Technical field
The present invention relates to a kind of Trackpad, and particularly a kind of have optical compensating layer in order to improve the Trackpad of presentation quality.
Background technology
In recent years, along with touch technology constantly develops, many consumption electronic products for example mobile phone (mobile phone), flat computer (tablet PC), Position Fixing Navigation System (GPS navigator system), notebook (laptop PC) and desktop PC (desktop PC) etc. all have the product of being combined with touch controllable function to come out.More common resistance-type, condenser type and the optical profile type etc. of comprising in the technology of present Trackpad.Wherein capacitive touch control plate becomes the main flow touch technology that at present middle high-order consumption electronic products use gradually by having characteristics such as high-accuracy, multi-point touch, high durability and high touch-control resolution.
The principle of operation of capacitive touch control plate is to use transparent induction electrode to detect the capacitance variations of touch point position, and utilizes on the different directions axle connecting line that links each transparent induction electrode that signal is passed back to perform calculations and finish the location.In known capacitive touch control plate, transparent induction electrode is to utilize for example tin indium oxide (indium tin oxide of transparent conductive material, ITO) form, and the tin indium oxide material itself belongs to high index of refraction (general about 1.7 to 2.0) and to the absorbent material of light, therefore have or not the zone of transparent induction electrode to be easy to generate visual color distortion at Trackpad, and cause transparent feel to answer the problem of electrode pattern significant degree, have influence on the presentation quality of Trackpad.In addition, in large-sized Trackpad, because the thickness that needs to increase transparent induction electrode meets the driving demand of large touch plate in order to further reduction impedance, so can make transparent feel answer the problem worse of electrode pattern significant degree.For instance, when general Trackpad size greater than 7 constantly, in order to reduce the impedance of transparent induction electrode, might need to increase the thickness of transparent induction electrode, and make transparent feel answer the problem worse of electrode pattern significant degree.In known capacitive touch control plate; generally be to cover transparent induction electrode with silicon dioxide or organic photoresistance; because the refractive index of this type of material and the refractive index difference of tin indium oxide big (general about about 1.5); so only can be used to form the function of protection or insulation, and can't improve the problem that transparent feel is answered the electrode pattern significant degree.
Summary of the invention
Fundamental purpose of the present invention is providing a kind of Trackpad, utilization arranges an optical compensating layer, mode by optical interference makes to have the zone of transparent induction electrode in the Trackpad and do not have difference in reflectivity and colourity difference between the zone of transparent induction electrode to reduce, and improves the penetration that the Trackpad transparent feel is answered the problem of electrode pattern significant degree and improved Trackpad.
The invention provides a kind of Trackpad, comprise a substrate, a touch-control sensing electrode and an optical compensating layer.The touch-control sensing electrode is arranged in the substrate.Optical compensating layer is arranged in the substrate, and optical compensating layer covers the touch-control sensing electrode.The refractive index of optical compensating layer is the refractive index that is less than or equal to the touch-control sensing electrode.
Description of drawings
Fig. 1 and the synoptic diagram that Figure 2 shows that the Trackpad of first preferred embodiment of the invention.
Figure 3 shows that the schematic side view of the Trackpad of second preferred embodiment of the invention.
Figure 4 shows that the schematic side view of the Trackpad of third preferred embodiment of the invention.
Figure 5 shows that the schematic side view of the Trackpad of four preferred embodiment of the invention.
Fig. 6 and the synoptic diagram that Figure 7 shows that the Trackpad of fifth preferred embodiment of the invention.
Figure 8 shows that the schematic side view of the Trackpad of sixth preferred embodiment of the invention.
Wherein, description of reference numerals is as follows:
101 Trackpads, 102 Trackpads
110 substrates, 111 first surfaces
112 second surfaces, 120 touch-control sensing electrodes
121 first axial induction electrodes, 122 second axial induction electrodes
130 insulation courses, 141 first connecting lines
142 second connecting lines, 151 optical compensating layers
The 170 enclosing cover substrate of 160 patch material layers
201 Trackpads, 202 Trackpads
210 substrates, 211 first surfaces
212 second surfaces, 220 touch-control sensing electrodes
221 first axial induction electrodes, 222 second axial induction electrodes
250 optical compensating layers, 251 first optical compensating layers
252 second optical compensating layers, 261 patch material layers
The 270 enclosing cover substrate of 262 patch material layers
280 diaphragms, 301 Trackpads
310 substrates of 302 Trackpads
311 first surfaces, 312 second surfaces
380 diaphragms, 390 decorative layers
391 lead T1 thickness
T2 thickness T 3 thickness
T4 thickness T 5 thickness
T6 thickness
Embodiment
Used some vocabulary to censure specific element in this instructions.One of skill in the art should understand, and the producer may call same element with different nouns.This instructions is not used as the mode of distinct elements with the difference of title, but the benchmark that is used as distinguishing with the difference of element on function.Be an open term " the comprising " in entire description, so should be construed to " comprise but be not limited to ".Moreover, can further understand the present invention for making those skilled in the art, hereinafter the spy enumerates several preferred embodiments of the present invention, and conjunction with figs., describes constitution content of the present invention in detail.Be noted that accompanying drawing only is used for illustrating, do not map according to life size.In addition, for example use in the text " first " with " second " wait narration, only in order to distinguish different elements, not to its generation restriction in proper order.
Please refer to Fig. 1 and Fig. 2.Fig. 1 and the synoptic diagram that Figure 2 shows that the Trackpad of first preferred embodiment of the invention.Wherein Fig. 1 looks synoptic diagram on being, and Fig. 2 is along the cross-sectional schematic shown in the hatching line A-A ' of Fig. 1.For convenience of description, each accompanying drawing of the present invention is only for illustrating that in order to easy understanding the present invention its detailed ratio can be adjusted according to the demand of design.As Fig. 1 and shown in Figure 2, the Trackpad 101 of present embodiment comprises a substrate 110, a touch-control sensing electrode 120 and an optical compensating layer 151.Touch-control sensing electrode 120 is arranged in the substrate 110, in particular, the touch-control sensing electrode 120 of present embodiment comprises the same lip-deep a plurality of first axial induction electrodes 121 and a plurality of second axial induction electrodes 122 that are arranged on substrate 110, that is to say that the first axial induction electrode 121 and the second axial induction electrode 122 all are arranged on the first surface 111 of substrate 110.In the present embodiment, the first axial induction electrode 121 and the second axial induction electrode 122 can use for example tin indium oxide (indium tin oxide of transparent conductive material, ITO), indium zinc oxide (indium zinc oxide, IZO) or aluminum zinc oxide (aluminum zinc oxide, AZO) form, but not as limit.In addition, touch-control sensing electrode 120 of the present invention can be the single layered transparent electrode structure, be not limited to the aforementioned first included axial induction electrode 121 and the multi-layer transparent electrode structure of the second axial induction electrode 122, and the shape of induction electrode of the present invention can be geometric configuratioies or irregularly shaped such as rhombus, triangle, straight line.Optical compensating layer 151 is arranged in the substrate 110, and optical compensating layer 151 covering touch-control sensing electrodes 120, that is to say that optical compensating layer 151 covers the first axial induction electrode 121 and the second axial induction electrodes 122.The refractive index of optical compensating layer 151 is the refractive indexes that are less than or equal to touch-control sensing electrode 120, that is to say, the refractive index of optical compensating layer 151 is to be less than or equal to the refractive index of the first axial induction electrode 121 and the refractive index of the second axial induction electrode 122.In addition, optical compensating layer 151 can comprise for example pi (polyimide of organic material, PI) with acrylic resin (acrylic resin), inorganic material for example single layer structure or the lamination layer structure of titanium dioxide (titanium oxide), above-mentioned material, but the present invention can optionally not adjust optical compensating layer 151 in order to reach required refractive index as limit.The optical compensating layer 151 of present embodiment can for example chemical vapor deposition of dry type plated film (chemical vapor deposition, CVD) or the wet type plated film for example rotate coating modes such as (spin on) and form, but not as limit.
Further specify, the refractive index of the touch-control sensing electrode 120 of present embodiment is to be situated between between 1.7 to 2.0 substantially, that is to say, the refractive index of the first axial induction electrode 121 and the second axial induction electrode 122 is to be situated between between 1.7 to 2.0 substantially, and the refractive index of optical compensating layer 151 is to be situated between between 1.6 to 1.7.In the present embodiment, a thickness of the first axial induction electrode 121 is identical with a thickness of the second axial induction electrode 122 substantially, but not as limit.In addition, the thickness of touch-control sensing electrode 120 is to be situated between in 18 nanometers between 150 nanometers, that is to say, a thickness of a thickness of the first axial induction electrode 121 and the second axial induction electrode 122 be Jie in 18 nanometers between 150 nanometers.The thickness of optical compensating layer is to be situated between in 60 nanometers between 150 nanometers, furtherly, to cover the thickness on the first axial induction electrode 121 and cover a thickness on the second axial induction electrode 122 be to be situated between in 60 nanometers between 150 nanometers to optical compensating layer 151.Can reach preferable optical effect down by above-mentioned thickness range and ranges of indices of refraction collocation.For instance, please refer to down tabulation 1, and please in the lump with reference to figure 2.The listed data of table 1 for the refractive index of the optical compensating layer 151 that uses be 1.65 o'clock to the effect of improving of the penetrance that has or not interregional difference in reflectivity, colour difference (delta E) and Trackpad integral body that the first axial induction electrode 121 or the second axial induction electrode 122 are set, and contrast in the general known technology with silicon dioxide layer and cover the penetrance situation that has or not interregional difference in reflectivity, colour difference and Trackpad integral body that induction electrode is set under the situation of induction electrode, wherein thickness T 1 is the thickness of the first axial induction electrode 121.
Table 1
As shown in table 1, when the use refractive index is 1.65 optical compensating layer 151, have or not interregional difference in reflectivity and colour difference that the first axial induction electrode 121 or the second axial induction electrode 122 are set can obtain tangible improvement in the Trackpad 101, that is to say that the setting of optical compensating layer 151 can effectively improve the problem of induction electrode pattern significant degree in the Trackpad.In addition, the penetration of Trackpad also is improved because use optical compensating layer 151 to replace general known silicon dioxide layer.
Please refer to down tabulation 2, and please in the lump with reference to figure 2.The listed data of table 2 are the effect of improving of the interregional difference in reflectivity using 151 pairs of optical compensating layers with different refractivity and different-thickness to have or not the first axial induction electrode 121 or the second axial induction electrode 122 are set and colour difference in different enforcement sample attitudes.
Table 2
Wherein thickness T 1 is the thickness of the first axial induction electrode 121, and thickness T 2 is that optical compensating layer 151 covers the thickness on the first axial induction electrode 121, and refractive index N is the refractive index of optical compensating layer 151.As shown in table 2, be 1.7 optical compensating layer or refractive index when being 1.65 optical compensating layer when using refractive index, have or not interregional difference in reflectivity and colour difference that the first axial induction electrode 121 or the second axial induction electrode 122 are set all can be improved in the Trackpad 101.In addition, the thickness T 2 that optical compensating layer 151 covers on the first axial induction electrode 121 is to be situated between in 60 nanometers between 150 nanometers, but present embodiment is as limit and the refractive index situation of visual and the first axial induction electrode 121 or the second axial induction electrode 122 is adjusted the thickness of optical compensating layer 151 with thickness collocation situation, for example can as enforcement sample attitude in the table 21 employed have refractive index be 1.7 and thickness be that the optical compensating layer of 1200 nanometers comes difference in reflectivity and colour difference are improved.
As Fig. 1 and shown in Figure 2, the Trackpad 101 of present embodiment can comprise also that one first connecting line 141, one second connecting line 142 and an insulation course 130 are arranged in the substrate 110.First connecting line 141 is in order to being electrically connected two first adjacent axial induction electrodes 121, and second connecting line 142 is in order to be electrically connected two second adjacent axial induction electrodes 122.Insulation course 130 is arranged between first connecting line 141 and second connecting line 142, in order to electrical isolation first connecting line 141 and second connecting line 142.In the present embodiment, first connecting line 141 and second connecting line 142 can comprise for example for example composite bed of silver, aluminium, copper, magnesium, molybdenum, above-mentioned material or the alloy of above-mentioned material of the nontransparent conductive material that is fit to of tin indium oxide, indium zinc oxide and aluminum zinc oxide or other of transparent conductive material, but not as limit.Insulation course 130 can comprise for example for example acrylic resin (acrylic resin) or other insulating material that is fit to of silicon nitride (silicon nitride), monox (silicon oxide) and silicon oxynitride (silicon oxynitride), organic material of inorganic material.In addition, in the present embodiment, also can between substrate 110 and first axial electrode, 121/ second axial electrode 122, a dielectric film (not shown) be set optionally, and on the second surface 112 of substrate 110 with respect to first surface 111, an electrically conducting transparent shielding layer (not shown) and a dielectric film (not shown) are set optionally, in order to improving the touch control operation situation of Trackpad 101, but not as limit.In other embodiments of the invention, second connecting line 142 can utilize same technology to form with the first axial induction electrode 121 and the second axial induction electrode 122, that is to say that second tie line 142 can be integrally formed with adjacent two second axial induction electrodes 122, but the present invention is not as limit.
Hereinafter will describe at the different embodiment of Trackpad of the present invention, and be simplified illustration, illustrate that below being primarily aimed at the different place of each embodiment describes in detail, and no longer identical place is repeated to give unnecessary details.In addition, components identical is to indicate with identical label in the various embodiments of the present invention, checks one against another between each embodiment in order to convenient.
Please refer to Fig. 3.Figure 3 shows that the schematic side view of the Trackpad of second preferred embodiment of the invention.As shown in Figure 3, compare with above-mentioned first preferred embodiment, the Trackpad 102 of present embodiment comprises that also a patch material layer 160 and an enclosing cover substrate 170 are arranged in the substrate 110.In the present embodiment, patch material layer 160 is arranged on the optical compensating layer 151, and enclosing cover substrate 170 is arranged on the patch material layer 151, that is to say, patch material layer 160 is arranged between enclosing cover substrate 170 and the optical compensating layer 151, in order to bonding enclosing cover substrate 170 and optical compensating layer 151.In other words, optical compensating layer 151 is arranged between substrate 110 and the patch material layer 160, and optical compensating layer 151 is arranged between substrate 110 and the enclosing cover substrate 170.The patch material layer 160 of present embodiment can comprise heat-curable glue, ultraviolet curing glue (UV adhesive), liquid optical cement (optical clear adhesive, OCA) or pressure sensitive adhesive (pressure sensitive adhesive, PSA), but not as limit.Enclosing cover substrate 170 can comprise a cover plate (cover lens) or a cover plate (cover glass), in order to protecting each element in the Trackpad 102, but not as limit.The Trackpad 102 of present embodiment is except patch material layer 160 and an enclosing cover substrate 170, the collocation relation of the feature of all the other each parts, material behavior and each layer thickness and refractive index is similar to the Trackpad 101 in above-mentioned first preferred embodiment, so at this and repeat no more.What deserves to be explained is that in the present embodiment, the refractive index of enclosing cover substrate 170 is the refractive indexes less than optical compensating layer 151, and the refractive index of patch material layer 160 is the refractive indexes less than optical compensating layer 151, in order to reach preferable optical effect.In particular, represent the refractive index of optical compensating layer 151 as refractive index N, refractive index N1 represents the refractive index of the first axial induction electrode 121, refractive index N2 represents the refractive index of patch material layer 160, and when refractive index N3 represented the refractive index of enclosing cover substrate 170, the relation between each refractive index can be with reference to following relational expression (1).
N2≤N3＜N≤N1 (1)
In order to improve the problem of induction electrode pattern significant degree in the Trackpad, but referring-to relation formula (1) selects layers of material to arrange in pairs or groups, but not as limit.In addition, the Trackpad 102 of present embodiment and the Trackpad 101 of above-mentioned first preferred embodiment can be considered a kind of single face ITO (single ITO, SITO) structure of Trackpad.
Please refer to Fig. 4.Figure 4 shows that the schematic side view of the Trackpad of third preferred embodiment of the invention.As shown in Figure 4, the Trackpad 201 of present embodiment comprises a substrate 210, a touch-control sensing electrode 220 and an optical compensating layer 250.The places different with the Trackpad 101 of above-mentioned first preferred embodiment are, the touch-control sensing electrode 220 of present embodiment comprises that one first axial induction electrode 221 and one second axial induction electrode 222 are separately positioned on two opposite surfaces of substrate 210, and wherein the first axial induction electrode 221 and the second axial induction electrode 222 are flagpole pattern.Further specify, the first axial induction electrode 221 is arranged on the first surface 211 of substrate 210, and the second axial induction electrode 222 is arranged on the second surface 212 of substrate 210.In addition, optical compensating layer 250 comprises one first optical compensating layer 251 and one second optical compensating layer 252.First optical compensating layer 251 is arranged on the first surface 211 of substrate 210 and covers the first axial induction electrode 221, and second optical compensating layer 252 is arranged on the second surface 212 of substrate 210 and covers the second axial induction electrode 222.In the present embodiment, the refractive index of optical compensating layer 250 is the refractive indexes that are less than or equal to touch-control sensing electrode 220, that is to say, one refractive index of first optical compensating layer 251 is refractive indexes that are less than or equal to the first axial induction electrode 221, and a refractive index of second optical compensating layer 252 is refractive indexes that are less than or equal to the second axial induction electrode 222.For instance, the refractive index of the first axial induction electrode 221 is to be situated between between 1.7 to 2.0, the refractive index of the second axial induction electrode 222 is to be situated between between 1.7 to 2.0, the refractive index of first optical compensating layer 251 is to be situated between between 1.6 to 1.7, and the refractive index of second optical compensating layer 252 is to be situated between between 1.6 to 1.7.In addition, the refractive index of the first axial induction electrode 221 can equal the refractive index of the second axial induction electrode 221 substantially, the refractive index of first optical compensating layer 251 can wait the refractive index at second optical compensating layer 252 substantially, but the present invention is as limit and viewable design need adopt the unequal first axial induction electrode 221 of refractive index and the second axial induction electrode 221, and looks design and need adopt unequal first optical compensating layer 251 of refractive index and second optical compensating layer 252.What deserves to be explained is, one thickness T 3 of the first axial induction electrode 221 of present embodiment and a thickness T 4 of the second axial induction electrode 222 are to be situated between in 18 nanometers between 150 nanometers, and first optical compensating layer 251 covers a thickness T 5 on the first axial induction electrode 221 and second optical compensating layer 252 to cover a thickness T 6 on the second axial induction electrode 222 is to be situated between in 60 nanometers between 150 nanometers, but not as limit.In addition, the collocation that the thickness T 4 that the thickness T 3 of the first axial induction electrode 221 and first optical compensating layer 251 cover the collocation relation of 5 of thickness T on the first axial induction electrode 221 and the second axial induction electrode 222 and the 2 252 optical compensating layer cover 6 of thickness T on the second axial induction electrode 222 concerns similar to above-mentioned first preferred embodiment, at this and repeat no more.In addition, first optical compensating layer 251 of present embodiment and second optical compensating layer 252 can comprise for example for example single layer structure or the lamination layer structure of titanium dioxide, above-mentioned material of pi and acrylic resin, inorganic material of organic material, and first optical compensating layer 251 and second optical compensating layer 252 can the dry type plated film for example chemical vapor deposition or wet type plated film for example rotate modes such as coating and form, but not as limit.In other words, the material of second optical compensating layer 252 and thickness can be identical with first optical compensating layer 251 or viewable design need use material first optical compensating layer 251 different with thickness and second optical compensating layer 252.The Trackpad 201 of present embodiment arranges position and the second axial induction electrode 222 except the first axial induction electrode 221 and the second axial induction electrode 221, the collocation relation of the feature of all the other each parts, material behavior and each layer thickness and refractive index is similar to the Trackpad 101 in above-mentioned first preferred embodiment, so at this and repeat no more.In addition, in the present embodiment, also can between substrate 210 and first axial electrode 221 and between substrate 210 and second axial electrode 222 a dielectric film (not shown) be set optionally respectively, in order to improving the touch control operation situation of Trackpad 201, but not as limit.
Please refer to Fig. 5.Figure 5 shows that the schematic side view of the Trackpad of four preferred embodiment of the invention.As shown in Figure 5, compare with above-mentioned the 3rd preferred embodiment, the Trackpad 202 of present embodiment also comprises two patch material layers (a patch material layer 261 and a patch material layer 262), an enclosing cover substrate 270 and a diaphragm 280.Two patch material layers are to be separately positioned on first optical compensating layer 251 and second optical compensating layer 252, and enclosing cover substrate 270 and diaphragm 280 are to be separately positioned on the two patch material layers.In other words, patch material layer 261 is arranged on the first surface 211 of substrate 210 with enclosing cover substrate 270, and patch material layer 262 is arranged on the second surface 212 of substrate 210 with diaphragm 280.Patch material layer 261 is in order to bonding enclosing cover substrate 270 and first optical compensating layer 251, and patch material layer 262 is in order to bonding diaphragm 280 and second optical compensating layer 252.In the present embodiment, the refractive index of two patch material layers (patch material layer 261 and patch material layer 262) is the refractive index less than optical compensating layer 250, that is to say, one refractive index of patch material layer 261 is the refractive indexes less than first optical compensating layer 251, and a refractive index of enclosing cover substrate 270 is the refractive indexes less than first optical compensating layer 251.Patch material layer 261 can comprise heat-curable glue, ultraviolet curing glue, liquid optical cement or pressure sensitive adhesive with patch material layer 262, but not as limit.The diaphragm 280 of present embodiment can comprise for example polyethylene terephthalate (polyethylene terephthalate of plastic cement; PET); Poly-s 179 (polyethersulfone; PES); pi; polycarbonate (polycarbonate; PC); PEN (polyethylene naphthalate; PEN) with polymethylmethacrylate (polymethyl methacrylate; PMMA); glass or form the diaphragm of organic functional plated film or inorganic functional plated film again on the surface with above-mentioned various types of materials, but not as limit.The Trackpad 202 of present embodiment is except patch material layer 261, patch material layer 262, enclosing cover substrate 270 and diaphragm 280; it is similar to Trackpad 201 and the Trackpad 102 in above-mentioned second preferred embodiment in above-mentioned the 3rd preferred embodiment respectively that the collocation of the feature of all the other each parts, material behavior and each layer thickness and refractive index is closed, so at this and repeat no more.What deserves to be explained is, because the first axial induction electrode 221 and the second axial induction electrode 221 of the Trackpad 202 of present embodiment and the Trackpad 201 of above-mentioned the 3rd preferred embodiment are arranged on the different surfaces of substrate 210, so Trackpad 201 and Trackpad 202 can be considered a kind of two-sided ITO (double ITO, DITO) structure of Trackpad.
Please refer to Fig. 6 and Fig. 7.Fig. 6 and Fig. 7 have illustrated the synoptic diagram of the Trackpad of fifth preferred embodiment of the invention.Wherein Fig. 6 looks synoptic diagram on being, and the cross-sectional schematic that Fig. 7 illustrates for the hatching line B-B ' along Fig. 6.As Fig. 6 and shown in Figure 7, the places different with the Trackpad 101 of above-mentioned first preferred embodiment are, in the Trackpad 301 of present embodiment, the first axial induction electrode 121, the second axial induction electrode, first connecting line 141, second connecting line 142, insulation course 130 and optical compensating layer 151 all are arranged on the second surface 312 of substrate 310, substrate 310 then can be considered a touch surface with respect to a first surface 311 of second surface 312, but not as limit.In addition, the Trackpad 301 of present embodiment also comprises a decorative layer 390 and a lead 391.Decorative layer 390 is arranged on the edge of substrate 310, and decorative layer 190 can comprise pottery, diamond-like-carbon (diamond-like carbon), color ink, photoresistance or resin, but not as limit.Lead 391 is arranged on the edge of substrate 310, and lead 391 forms with touch-control sensing electrode 220 and is electrically connected, with so that touching signals can be delivered to touch-control sensing electrode 220 via lead 391, and decorative layer 391 can be in order to covering lead 391, but be not limited with this function.The Trackpad 301 of present embodiment is except substrate 310, decorative layer 390 and lead 391, the collocation relation of the feature of all the other each parts, material behavior and each layer thickness and refractive index is similar to the Trackpad 101 in above-mentioned first preferred embodiment, so at this and repeat no more.What deserves to be explained is, the material of the substrate 310 of present embodiment does not limit, for example can be substrate of glass or plastic cement substrate, preferably can be a cover plate or a cover plate, the compare structure of Trackpad 101 of the first above-mentioned preferred embodiment, in the Trackpad 301 of present embodiment, owing to substrate 310 itself namely can be a cover plate or a cover plate need not to arrange in addition cover plate again, so can help the effect of integral thickness thinning and manufacture method simplification.In addition, in the present embodiment, between substrate 310 and first axial electrode 121 a dielectric film (not shown) is set optionally also, in order to improving the touch control operation situation of Trackpad 301, but not as limit.
Please refer to Fig. 8.Figure 8 shows that the schematic side view of the Trackpad of sixth preferred embodiment of the invention.As shown in Figure 8, compare with above-mentioned the 5th preferred embodiment, the Trackpad 302 of present embodiment comprises that also a patch material layer 160 and a diaphragm 380 are arranged on the second surface 312 of substrate 310.Patch material layer 160 is arranged on the optical compensating layer 151; and diaphragm 380 is arranged on the patch material layer 160; that is to say that patch material layer 160 is arranged between optical compensating layer 151 and the diaphragm 380, in order to bonding optical compensating layer 151 and diaphragm 380.The diaphragm 380 of present embodiment can comprise plastic cement for example polyethylene terephthalate, Poly-s 179, pi, polycarbonate, PEN and polymethylmethacrylate, glass or form the diaphragm of organic functional plated film or inorganic functional plated film again on the surface with above-mentioned various types of materials, but not as limit.The patch material layer 160 of present embodiment can comprise heat-curable glue, ultraviolet curing glue, liquid optical cement or pressure sensitive adhesive, but not as limit.What deserves to be explained is that in the present embodiment, the refractive index of patch material layer 160 is the refractive indexes less than optical compensating layer 151, in order to reach preferable optical effect.The Trackpad 302 of present embodiment is except patch material layer 160 and diaphragm 380; the collocation relation of the feature of all the other each parts, material behavior and each layer thickness and refractive index is similar to the Trackpad 301 in above-mentioned the 5th preferred embodiment, so at this and repeat no more.
Comprehensive the above, Trackpad of the present invention is to utilize at least one optical compensating layer is set, and adjust its refractive index and thickness situation and induction electrode and arrange in pairs or groups, the problem of the feasible induction electrode pattern significant degree that causes because increase induction electrode thickness is improved, and increase the whole penetration of Trackpad simultaneously, make the presentation quality of Trackpad obtain to improve.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a Trackpad is characterized in that, comprising:
One substrate;
One touch-control sensing electrode is arranged in this substrate; And
One optical compensating layer is arranged in this substrate, and this optical compensating layer covers this touch-control sensing electrode;
Wherein the refractive index of this optical compensating layer is the refractive index that is less than or equal to this touch-control sensing electrode.
2. Trackpad as claimed in claim 1, it is characterized in that, this touch-control sensing electrode comprises same lip-deep at least one first axial induction electrode and at least one second axial induction electrode that is arranged on this substrate, the refractive index of this first axial induction electrode and this second axial induction electrode is to be situated between between 1.7 to 2.0, and the refractive index of this optical compensating layer is to be situated between between 1.6 to 1.7.
3. Trackpad as claimed in claim 1, it is characterized in that, this touch-control sensing electrode comprises that at least one first axial induction electrode and at least one second axial induction electrode are separately positioned on two opposite surfaces of this substrate, this optical compensating layer comprises that one first optical compensating layer and one second optical compensating layer cover this first item induction electrode and this second item induction electrode respectively, the refractive index of this first axial induction electrode and this second axial induction electrode is to be situated between between 1.7 to 2.0, and the refractive index of this first optical compensating layer and this second optical compensating layer is to be situated between between 1.6 to 1.7.
4. Trackpad as claimed in claim 1 is characterized in that, the thickness of this touch-control sensing electrode is to be situated between in 18 nanometers between 150 nanometers., and the thickness of this optical compensating layer is to be situated between in 60 nanometers between 150 nanometers.
5. Trackpad as claimed in claim 1 is characterized in that, this substrate comprises a cover plate or a cover plate.
6. Trackpad as claimed in claim 5 is characterized in that, also comprises a decorative layer, is arranged on the edge of this substrate, and this decorative layer comprises pottery, diamond-like-carbon, color ink, photoresistance or resin.
7. Trackpad as claimed in claim 1, it is characterized in that, also comprise a patch material layer and an enclosing cover substrate, wherein this patch material layer is arranged on this optical compensating layer, this enclosing cover substrate is arranged on this patch material layer, and the refractive index of this patch material layer is the refractive index less than this optical compensating layer.
8. Trackpad as claimed in claim 3; it is characterized in that; also comprise two patch material layers, an enclosing cover substrate and a diaphragm; wherein this two patch materials layer is separately positioned on this first optical compensating layer and this second optical compensating layer; this enclosing cover substrate and this diaphragm are separately positioned on this two patch materials layer, and the refractive index of this two patch materials layer is the refractive index less than this optical compensating layer.
9. Trackpad as claimed in claim 6; it is characterized in that; also comprise a patch material layer and a diaphragm; this patch material layer is arranged on this optical compensating layer; and this diaphragm is arranged on this patch material layer, and wherein the refractive index of this patch material layer is the refractive index less than this optical compensating layer.
10. as claim 7,8 or 9 described Trackpads, it is characterized in that this patch material layer comprises ultraviolet curing glue, heat-curable glue, liquid optical cement or pressure sensitive adhesive.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210056239.1A CN103294291B (en) | 2012-03-05 | 2012-03-05 | Trackpad |
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|---|---|---|---|
| CN201210056239.1A CN103294291B (en) | 2012-03-05 | 2012-03-05 | Trackpad |
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| CN103294291A true CN103294291A (en) | 2013-09-11 |
| CN103294291B CN103294291B (en) | 2016-09-07 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN103677411A (en) * | 2013-12-06 | 2014-03-26 | 京东方科技集团股份有限公司 | Touch display device and manufacture method thereof |
| CN104731397A (en) * | 2013-12-19 | 2015-06-24 | 胜华科技股份有限公司 | Touch panel and touch display device |
| CN105302387A (en) * | 2014-07-04 | 2016-02-03 | 胜华科技股份有限公司 | Touch panel |
| CN105807964A (en) * | 2014-12-29 | 2016-07-27 | 南昌欧菲光学技术有限公司 | Black frame touch panel |
| CN105807964B (en) * | 2014-12-29 | 2019-11-05 | 南昌欧菲光学技术有限公司 | Dark border touch panel |
| CN106033284A (en) * | 2015-03-20 | 2016-10-19 | 南昌欧菲光学技术有限公司 | Display screen, terminal and display screen making method |
| CN106033284B (en) * | 2015-03-20 | 2019-05-17 | 南昌欧菲光学技术有限公司 | Display screen, terminal and display screen production method |
| CN106371684A (en) * | 2016-09-20 | 2017-02-01 | 京东方科技集团股份有限公司 | Touch display device, touch display panel and manufacturing method thereof |
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| CN107121805A (en) * | 2017-04-07 | 2017-09-01 | 昆山龙腾光电有限公司 | Touch-control display panel and its manufacture method |
| CN107121805B (en) * | 2017-04-07 | 2021-12-21 | 昆山龙腾光电股份有限公司 | Touch display panel and manufacturing method thereof |
| US10816858B2 (en) | 2018-10-29 | 2020-10-27 | Liqxtal Technology Inc. | Electrically tunable phase modulation element |
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