CN103336630A - Light polarizing-filtering module and touch display screen - Google Patents
Light polarizing-filtering module and touch display screen Download PDFInfo
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- CN103336630A CN103336630A CN2013102827372A CN201310282737A CN103336630A CN 103336630 A CN103336630 A CN 103336630A CN 2013102827372 A CN2013102827372 A CN 2013102827372A CN 201310282737 A CN201310282737 A CN 201310282737A CN 103336630 A CN103336630 A CN 103336630A
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Abstract
A light polarizing-filtering module comprises a light polarizing assembly and a light filtering assembly. The light polarizing assembly comprises a light polarizing plate and a first conducting layer. The first conducting layer is a physically transparent conducting layer or a visually transparent conducting layer. The first conducting layer comprises a plurality of first electric conduction units which extend in the first direction and are arranged in a mutually-spacing mode. The light filtering assembly comprises a transparent substrate, a light-tight layer, a second imprinting glue layer, a light filtering layer and a second conducting layer. The light-tight layer is in a grid shape and comprises grid wires crossed mutually. The second conducting layer is a visually transparent conducting layer and comprises a plurality of second electric conduction units which extend in the second direction and are arranged in a mutually-spacing mode. The light filtering layer comprises a plurality of light filtering units. The first direction is not parallel to the second direction. The first electric conduction units and the second electric conduction units are mutually spaced and insulated in the thickness direction. According to the light polarizing-filtering module, touch control operation, a light polarizing function and a light filtering function can be achieved at the same time. Therefore, reduction of the thickness of an electronic product is facilitated, and material and assembly cost are saved.
Description
Technical field
The present invention relates to display technique field, plane, particularly relate to a kind of polarisation-optical filtering module and touch display screen.
Background technology
Touch-screen is the inductive arrangement that can receive input signals such as touch.Touch-screen has given information interaction brand-new looks, is extremely attractive brand-new information interaction equipment.The development of touch screen technology has caused the common concern of domestic and international information medium circle, has become the Chaoyang new high-tech industry that the photoelectricity industry is a dark horse.
At present, having the electronic product that touches Presentation Function includes display screen and is positioned at touch-screen on the display screen.Touch-screen as with display screen assembly independently, when being used for the electronic product of some realization man-machine interactions, all need to order according to the size of display screen, assemble again afterwards, with the formation touch display screen, but touch display screen can have touch control operation and Presentation Function simultaneously.The assembling of existing touch-screen and display screen mainly contains dual mode, and namely frame pastes and full the applying.The frame subsides are to be fitted in the edge of touch-screen and display screen, and full applying is whole the applying of upper surface with lower surface and the display screen of touch-screen.
Traditional display screen mainly comprises polaroid, filtering assembly, Liquid Crystal Module and TFT(Thin Film Transistor, thin film transistor (TFT)), make itself to have had bigger thickness, and when continuing on the display screen applying touch-screen, will further increase the thickness of touch display screen.
Summary of the invention
Based on this, be necessary to be conducive to reduce the polarisation-optical filtering module of touch display unit thickness and use the touch display screen of this polarisation-optical filtering module.
A kind of polarisation-optical filtering module comprises:
The polarisation assembly, comprise polaroid, and be arranged at first conductive layer of described polaroid one side, and described first conductive layer is the transparent or visually-clear conductive layer of physics, described first conductive layer comprises a plurality of first conductive units that arrange along the space that first direction extends;
Filtering assembly, comprise transparent substrates, light shield layer, filter layer and second conductive layer, described light shield layer is arranged at described transparent substrates one side, described light shield layer is lattice-shaped, comprise cross one another gridline, cut apart formed space by described gridline and form grid cell, described second conductive layer is located at described light shield layer away from a side of described transparent substrates, described second conductive layer is the visually-clear conductive layer, described second conductive layer comprises a plurality of second conductive units that arrange along the space that second direction is extended, described second conductive unit comprises second conductive grid that is intersected to form mutually by second conductive thread, described filter layer comprises a plurality of filter units, and described filter unit is positioned at described grid cell in the projection of described light shield layer;
Described first direction and described second direction are not parallel, described first conductive unit and described second conductive unit space and insulation on thickness direction.
Among embodiment, described first conductive layer is formed by transparent conductive material therein, and described first conductive unit is strip.
Therein among embodiment, described filtering assembly also comprises the second impression glue-line, the described second impression glue-line is positioned at described light shield layer away from a side of described substrate, the described second impression glue-line is provided with latticed second groove away from a side of described light shield layer, and described second conductive layer is formed by the conductive material that is filled in described second groove.
Among embodiment, the described second impression glue-line is between described light shield layer and described filter layer therein.
Among embodiment, described first conductive unit comprises first conductive grid that is intersected to form mutually by first conductive thread therein, and first conductive thread intersects to form grid node, and the live width of described first conductive thread is 0.2 μ m～5 μ m.
Among embodiment, the distance of adjacent two grid node of first conductive layer is 50 μ m～800 μ m therein.
Among embodiment, described first conductive unit comprises first conductive grid that is intersected to form mutually by first conductive thread therein, and first conductive thread all falls within on the described gridline in the projection of described light shield layer.
Among embodiment, each described first conductive grid projection on described filter layer is surrounded by at least one filter unit therein.
Among embodiment, described polarisation assembly also comprises the first impression glue-line that is attached at described polaroid therein, and the described first impression glue-line offers first groove, and described first conductive layer is solidify to form by the conductive material that is filled in described first groove.
Among embodiment, the degree of depth of described first groove is less than the thickness of the described first impression glue-line therein, and the thickness of described first conductive thread is not more than the degree of depth of described first groove.
Among embodiment, described first conductive layer directly is attached to described polaroid surface therein.
Among embodiment, described second conductive thread intersects to form grid node therein, and the live width of described second conductive thread is 0.2 μ m～5 μ m.
Among embodiment, the distance of adjacent two grid node of described second conductive layer is 50 μ m～800 μ m therein.
Among embodiment, described second conductive thread all falls within on the gridline in the projection of described light shield layer therein.
Among embodiment, the distance between adjacent described first conductive unit is 0.5 μ m～50 μ m therein; Distance between adjacent described second conductive unit is 0.5 μ m～50 μ m.
Among embodiment, each described second conductive grid projection on described filter layer is surrounded by at least one filter unit therein.
A kind of touch display screen comprises the following polaroid, TFT electrode, Liquid Crystal Module and the polarisation as previously discussed-optical filtering module that stack gradually.
Above-mentioned polarisation-optical filtering module and touch display screen, polarisation-optical filtering module can realize touch control operation, polarized light function and filtering functions simultaneously, as an indispensable assembly in the display screen, when above-mentioned polarisation-optical filtering module is used for display screen, can directly make display screen have touch controllable function, need not to assemble touch-screen at display screen again, not only be conducive to reduce the thickness of electronic product, also saved material and assembly cost simultaneously greatly.
Description of drawings
Fig. 1 is the structural representation of the touch display screen of an embodiment;
Fig. 2 is the structural representation of the polarisation-optical filtering module of an embodiment;
Fig. 3 is the structural representation of the polarisation-optical filtering module of another embodiment;
Fig. 4 is again the structural representation of the polarisation-optical filtering module of an embodiment;
Fig. 5 is the structural representation of the polarisation-optical filtering module of another embodiment;
Fig. 6 is the structural representation of the polarisation-optical filtering module of another embodiment;
Fig. 7 is the structural representation of first conductive layer and second conductive layer;
Fig. 8 is first conductive thread of an embodiment or the partial structurtes synoptic diagram of second conductive thread;
Fig. 9 is first conductive thread of another embodiment or the partial structurtes synoptic diagram of second conductive thread;
Figure 10 is again first conductive thread of an embodiment or the partial structurtes synoptic diagram of second conductive thread;
Figure 11 is first conductive thread of another embodiment or the partial structurtes synoptic diagram of second conductive thread.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.A lot of details have been set forth in the following description so that fully understand the present invention.But the present invention can implement much to be different from alternate manner described here, and those skilled in the art can do similar improvement under the situation of intension of the present invention, so the present invention is not subjected to the restriction of following public concrete enforcement.
Need to prove that when element is called as " being fixed in " another element, can directly can there be element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be to be directly connected to another element or may to have element placed in the middle simultaneously.
Unless otherwise defined, the employed all technology of this paper are identical with the implication that belongs to those skilled in the art's common sense of the present invention with scientific terminology.Employed term is not intended to be restriction the present invention just in order to describe the purpose of specific embodiment in instructions of the present invention herein.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.
See also Fig. 1, the touch display screen 100 of an embodiment comprises following polaroid 10, TFT electrode 20, Liquid Crystal Module 30, public electrode 40, diaphragm 50 and the polarisation-optical filtering module 60 that stacks gradually.In other embodiment, diaphragm 50 and public electrode 140 can also be set.
Be appreciated that when using backlight as polarized light source, as the OLED polarized light source, need not to use down polaroid 10.Structure and the function of the following polaroid 10 of present embodiment, TFT electrode 20, Liquid Crystal Module 30 and public electrode 40 can be identical with existing product, do not repeat them here.
Polarisation-optical filtering module 60 can have touch control operation, polarized light function and filtering functions simultaneously, makes touch display screen also have touch display function.Display screen can be the LCDs of straight-down negative or side entering type light source.
Polarisation-optical filtering module 60 comprises polarisation assembly 62 and filtering assembly 64.Polarisation assembly 62 comprises that polaroid 620 and first conductive layer, 624, the first conductive layers 624 are the transparent or visually-clear conductive layer of physics.First conductive layer 624 comprises a plurality of first conductive units 6242 that arrange along the space that first direction extends.
See also Fig. 2, in one embodiment, first conductive layer 624 directly is attached to a surface of polaroid 620.Can conductive material directly be formed at polaroid 620 surfaces by the mode of coating or plated film, obtain a plurality of first conductive units 6242 that arrange along the space that first direction extends of first conductive layer 624 again through etching.Conductive material uses transparent conductive material, as being ITO, forms the physics transparency conducting layer.First conductive unit 6242 that forms is strip.Because first conductive layer 624 forms for transparent conductive material, thus can do into strips, thus can reduce manufacture difficulty.Certainly, in other embodiment, also can first conductive unit 6242 be made mesh shape through etching.
In one embodiment, first conductive layer 624 directly is attached to a surface of polaroid 620.Can conductive material be formed at polaroid 620 surfaces by the mode of coating or plated film, obtain a plurality of first conductive units 6242 that arrange along the space that first direction extends of first conductive layer 624 again through etching.First conductive unit 6242 comprises first conductive grid 6246 that is intersected to form by first conductive thread 6244.
See also Fig. 3, first conductive thread 6244 intersects to form grid node, and the live width of described first conductive thread 6244 is 0.2 μ m～5 μ m, makes first conductive layer 624 can reach visually-clear, and namely naked eyes are invisible.This moment, first conductive thread 6244 can be aimed at the gridline 642a of light shield layer 642, further improved transmittance.In other embodiment, first conductive thread 6244 can not aimed at the gridline 642a of light shield layer 642 yet, and namely first conductive grid 6246 is random grid, reduces manufacture difficulty.
See also Fig. 4, first conductive thread 6244 all falls within on the gridline 642a in the projection of light shield layer 642, because light shield layer 642 has opaqueness, can guarantee that first conductive thread 6244 is blocked by light shield layer 642, can not block filter layer, thereby can not impact transmittance, and not by user's finding of naked eye, form visually-clear, improved user's experience sense.The live width of first conductive thread 6244 can be less than the live width of gridline 642a.In other embodiment, the live width of first conductive thread 6244 can also equal the live width of gridline 642a.
The conductive material of Fig. 3 and first conductive layer 624 shown in Figure 4 can be for transparent or opaque material, as metal simple-substance, metal alloy, carbon nano-tube, Graphene, organic conductive macromolecule or ITO.First conductive unit 6242 of space insulation can be handled by first conductive layer 624 is broken and obtain.
See also Fig. 5 and Fig. 6, in one embodiment, polarisation assembly 62 also comprises the first impression glue-line 622.The first impression glue-line 622 is coated polaroid 620 1 surfaces, and the first impression glue-line 622 offers first groove 6222.First groove 6222 is opened in the first impression glue-line 622 away from a side of polaroid 620, also can be opened in the first impression glue-line 622 near a side of polaroid 620.
First conductive layer 624 is solidify to form by the conductive material that is filled in first groove 6222, and first conductive layer 624 comprises a plurality of first conductive units 6242 that arrange along the space that first direction extends.First conductive unit 6242 comprises first conductive grid 6246 that is intersected to form mutually by first conductive thread 6244.
See also Fig. 5, first conductive thread 6244 intersects to form grid node, and the live width of described first conductive thread 6244 is 0.2 μ m～5 μ m, makes first conductive layer 624 can reach visually-clear, and namely naked eyes are invisible.This moment, first conductive thread 6244 can be aimed at the gridline 642a of light shield layer 642.In other embodiment, first conductive thread 6244 can not aimed at the gridline 642a of light shield layer 642 yet, and namely first conductive grid 6246 is random grid.
See also Fig. 6, first conductive thread 6244 all falls within on the gridline 642a in the projection of light shield layer 642, because light shield layer 642 has opaqueness, can guarantee that first conductive thread 6244 is blocked by light shield layer 642, and not by user's finding of naked eye, improved user's experience sense.The live width of first conductive thread 6244 can reduce the risk that first conductive thread 6244 exposes gridline 642a less than the live width of gridline 642a.In other embodiment, the live width of first conductive thread 6244 can also equal the live width of gridline 642a.
See also Fig. 2 to Fig. 7, filtering assembly 64 comprises transparent substrates 640, light shield layer 642, second impression glue-line 643, filter layer 644 and second conductive layer 646.The material of transparent substrates 640 can be specifically as follows sillico aluminate glass and calcium soda-lime glass for as glass, has good cohesive force through the plasma treatment rear surface.General, the thickness range of transparent substrates 640 can be 0.1mm～0.5mm.
The second impression glue-line 643 covers in light shield layer 642 away from transparent substrates 640 1 sides, and namely the second impression glue-line 643 covers the zone beyond gridline 642a and gridline.The second impression glue-line 643 offers second groove 6432 away from a side of transparent substrates 640.Second conductive layer 646 is solidify to form by the conductive material that is filled in second groove 6432, and second conductive layer 646 is the visually-clear conductive layer.Second conductive layer 646 comprises that a plurality of second conductive unit, 6462, the second conductive units 6462 that arrange along the space that second direction is extended comprise second conductive grid 6466 that is intersected to form mutually by second conductive thread 6464.
In other embodiments, the second impression glue-line 643 can also be set, can fill and lead up layer by arranging in the zone of light shield layer 642 except gridline, this is filled and led up layer and differs from the second impression glue-line 643.Therefore form second conductive layer 646 by coating or plated film mode filling and leading up laminar surface again, saved second impression glue-line 643 and second groove 6432.
See also Fig. 2 and Fig. 3, second conductive thread 6464 intersects to form grid node, and the live width of second conductive thread 6464 is 0.2 μ m～5 μ m.Make second conductive layer 646 can reach visually-clear, namely naked eyes are invisible.Conductive material can be metal simple-substance or alloy, carbon nano-tube, Graphene, organic conductive macromolecule or ITO.Second conductive unit 6462 of space insulation can be handled by second conductive layer 646 is broken and obtain.
See also Fig. 4, Fig. 5 and Fig. 6, second conductive thread 6464 all falls within on the gridline 642a in the projection of light shield layer 642.Because light shield layer 642 has opaqueness, can guarantee that second conductive thread 6464 is blocked by light shield layer 642, and not by user's finding of naked eye, improve user's experience sense.The live width of second conductive thread 6464 can reduce the risk that second conductive thread 6464 exposes gridline 642a less than the live width of gridline 642a.In other embodiment, the live width of second conductive thread 6464 can also equal the live width of gridline 642a.
Wherein, first direction and second direction are not parallel, and first conductive unit 6242 and second conductive unit 6462 space and insulation on thickness direction form mutual inductance type capacitive sensing structure.
Above-mentioned polarisation-optical filtering module, first conductive layer 624 and second conductive layer 646 constitute the capacitive sensing structure, make polarisation-optical filtering module 60 can realize touch control operation, polarization light function and filtering functions simultaneously, and the design that need not to put up a bridge, and have reduced task difficulty.With above-mentioned polarisation-when optical filtering module 60 is applied to display screen, can directly make display screen have touch controllable function, need not again not only to be conducive to reduce the thickness of electronic product at display screen assembling one touch-screen, also saved material and assembly cost greatly.First conductive layer 624 and second conductive layer 646 can both be realized visually-clear simultaneously, so can not improved the customer experience sense by client's finding of naked eye.
In one embodiment, the distance range of adjacent two grid nodes of first conductive layer 624 can be 50 μ m～800 μ m.The distance range of the grid node of adjacent two grids of second conductive layer 646 can be 50 μ m～800 μ m.When the distance of grid node was more big, the density of conductive grid was more little, and this moment, light permeable rate wanted big, and cost also can be low, but resistance can be bigger.When the distance of grid node more hour, the density of conductive grid is more big, resistance is less, but transmitance reduces, the consumption of conductive material is also more big simultaneously, so that cost is more high.So take all factors into consideration cost, transmittance and resistance factor, the grid node spacing be traditionally arranged to be 50 μ m～800 μ m.
The degree of depth of first groove 6222 is less than the thickness of the first impression glue-line 622, and the thickness of first conductive thread 6244 is not more than the degree of depth of first groove 6222.The degree of depth of second groove 6432 is less than the thickness of the second impression glue-line 643, and the thickness of second conductive thread 6464 is less than the degree of depth of second groove 6432.After can preventing that first conductive layer 624 and second conductive layer 646 from forming, again in follow-up technology by scratch.
In one embodiment, the material of the first impression glue-line 622 is solvent-free ultra-violet curing acrylic resin.The first impression glue-line 622 is transparence, does not influence whole transmitance.In other embodiments, the material of the first impression glue-line 622 can also be visible-light curing resin or heat reactive resin.The thickness of the first impression glue-line 622 can be 2 μ m～10 μ m.
In one embodiment, the material of the second impression glue-line 643 is solvent-free ultra-violet curing acrylic resin.The second impression glue-line 643 is transparence, does not influence whole transmitance.In other embodiments, the material of the second impression glue-line 643 can also be visible-light curing resin or heat reactive resin.The thickness of the second impression glue-line 643 can be 2 μ m～10 μ m.
In one embodiment, the distance between adjacent described first conductive unit 6242 is 0.5 μ m～50 μ m.So that a plurality of first conductive units 6242 spaces are with insulation.Distance between adjacent described second conductive unit 6462 is 0.5 μ m～50 μ m.So that a plurality of second conductive units 6462 spaces are with insulation.
See also Fig. 2, Fig. 3 and Fig. 5, when utilizing translucent adhesive to bond polarisation assembly 62 and filtering assembly 64, the one side that the transparent substrates 640 of filtering assembly 64 can not arranged second conductive layer 646 is fitted with the one side that the polaroid 620 of polarisation assembly 62 does not arrange first conductive layer 624.As Fig. 4 and shown in Figure 6, the one side that also transparent substrates 640 of filtering assembly 64 can not arranged second conductive layer 646 utilizes translucent adhesive to fit with the one side that the polaroid 620 of polarisation assembly 62 is provided with first conductive layer 624.
See also Fig. 2, because first conductive layer 624 is for transparent conductive material formation, so first conductive unit 6242 can be list structure.Certainly, also can be rule or irregular mesh shape.See also Fig. 3 and Fig. 5, because the live width scope of first conductive thread 6244 is 0.2 μ m～5 μ m, thus first conductive thread, 6244 visually-clear, so first conductive grid 6246 can be irregular random grid, also can be regular polygon, as square, rhombus, regular hexagon.
See also Fig. 4 and Fig. 5, owing to first conductive thread 6244 all falls within on the gridline 642a in the projection of light shield layer 642, so first conductive grid 6246 can be regular polygon, as square, rhombus, regular hexagon.Similar fitgures each other with filter unit 6442.
See also Fig. 2 and Fig. 3, because the live width scope of second conductive thread 6464 is 0.2 μ m～5 μ m, thus second conductive thread, 6464 visually-clear, so second conductive grid 6466 can be irregular random grid, also can be regular polygon, as square, rhombus, regular hexagon.
See also Fig. 4, Fig. 5 and Fig. 6, owing to second conductive thread 6464 all falls within on the gridline 642a in the projection of light shield layer 642, so second conductive grid 6466 can be regular polygon, as square, rhombus, regular hexagon.With filter unit similar fitgures each other.First conductive thread 6244 and second conductive thread 6464 can be straight line, curve or broken line.
See also Fig. 8 to Figure 11, expression be when first conductive thread 6244 when the projection of light shield layer 642 all falls within on the gridline 642a, each first conductive grid 6246 accommodates at least one complete filter unit 6442 in described projection at filter layer 644.Or when second conductive thread 6464 when the projection of light shield layer 642 all falls within on the gridline 642a, each second conductive grid 6466 accommodates at least one complete filter unit 6442 in described projection at filter layer 644.
In other embodiments, 0.2 μ m when the live width of first conductive thread 6244 and second conductive thread 6464 is～5 μ m, and when first conductive grid 6246 and second conductive grid 6466 were random grid, first conductive thread 6244 and second conductive thread 6464 also can drop on the filter unit 6442 in the projection of filter layer 644.
As shown in Figure 8, each first conductive grid 6246 is surrounded by a complete filter unit 6442 in the projection of filter layer 644.Can increase the electric conductivity of first conductive layer 624.Each second conductive grid 6466 accommodates a filter unit 6442 in the projection of filter layer 644.Can increase the electric conductivity of second conductive layer 646.
To shown in Figure 11, each first conductive grid 6246 projection on filter layer 644 is surrounded by at least two complete filter units 6442 as Fig. 9.Each second conductive grid 6466 is surrounded by at least two filter units 6442 in the projection of filter layer 644.Can be according to the resistance of conductive layer being required and the requirement of the coating weight of conductive material decides filter unit 6442 quantity of holding.
Can be divided into three kinds of situations this moment, and for example laterally to be X-axis, the direction of vertical transverse is Y-axis.As shown in Figure 9, only on X-direction, each first conductive grid 6246 projection on filter layer 644 is surrounded by at least two filter units 6442.Each second conductive grid 6466 is surrounded by at least two filter units 6442 in the projection of filter layer 644.As shown in figure 10, only on Y direction, each first conductive grid 6246 projection on filter layer 644 accommodates at least two filter units 6442.Each second conductive grid 6466 accommodates at least two filter units 6442 in the projection of filter layer 644.As shown in figure 11, on X-axis and Y direction, each first conductive grid 6246 projection on filter layer 644 accommodates at least two filter units 6442 simultaneously.Each second conductive grid 6466 accommodates at least two filter units 6442 in the projection of filter layer 644.
In one embodiment, filter unit 6442 numbers that hold in the projection of filter layer 644 of each first conductive grid 6246 can be inequality with filter unit 6442 numbers that each second conductive grid 6466 holds in the projection of filter layer 644.Effectively reduce manufacture difficulty.Certainly, in other embodiments, filter unit 6442 numbers that can also each first conductive grid 6246 hold in the projection of filter layer 644 are several identical with the filter unit 6442 that each second conductive grid 6466 holds.
See also Fig. 2, above-mentioned polarisation-optical filtering module with touch control operation function, when first conductive layer 624 formed by coating or plated film mode, its concrete manufacturing process was as follows:
(1) on whole an of surface of polaroid 620 layer of conductive material is set, in the present embodiment, conductive material is transparent conductive material, for example ITO.
(2) coating photoresist, utilize the mask plate corresponding with first conductive unit 6242 of first conductive layer 624 to photoresist expose, development again, only cover the photoresist corresponding with first conductive unit 6242 on first conductive layer 624, other local photoresist is removed.Specific to first conductive unit 6242 that in the present embodiment is strip.
(3) utilize etching technique that first conductive layer 624 is carried out etching, obtain first conductive unit 6242 separate, insulation, thereby obtain having the polarisation assembly 62 of first conductive layer 624.Specific to first conductive unit 6242 that in the present embodiment is strip.A plurality of first conductive units 6242 extend and setting at interval along first direction.
(4) cover the photoresist that one deck has black dyes on a surface of transparent substrates 640.
(5) utilize exposure-developing technique, the photoresist that has black dyes in corresponding filter unit 6442 zones is removed.Form the light shield layer 642 of lattice-shaped, comprise cross one another gridline 642a, the space of being cut apart by gridline 642a forms grid cell, and light shield layer 642 has opaqueness.
(6) one deck impression glue is set having whole of black photoresist surface again, form the second impression glue-line 643, and the impression formboard of using second conductive unit 6462 with second conductive layer 646 to be nested impresses on the second impression glue-line, 643 surfaces and solidifies, and obtains second groove 6432.
(7) filled conductive material and solidifying in second groove 6432 obtains second conductive layer 646.Second conductive layer 646 comprises that a plurality of second conductive unit, 6462, the second conductive units 6462 that arrange along the space that second direction is extended comprise second conductive grid 6466 that is intersected to form mutually by second conductive thread 6464.The live width scope of second conductive thread 6464 is 0.2 μ m～5 μ m.Conductive material can be metal simple-substance or alloy, carbon nano-tube, Graphene, organic conductive macromolecule or ITO.
(8) away from a side gradation of transparent substrates 640 filter unit 6442 is set at the second impression glue-line 643, and filter unit 6442 is dropped in the grid cell in the projection of light shield layer 642.A plurality of filter units 6442 form filter layer 644.Obtain having the filtering assembly 64 of second conductive layer 646.
(9) the polarisation assembly 62 that will have first conductive layer 624 bonds by translucent adhesive with the filtering assembly 64 that has second conductive layer 646 and solidifies, and obtains having the polarisation-optical filtering module 60 of touch control operation function.
In the above-mentioned method for making, because first conductive layer 624 adopts transparent conductive material, so first conductive unit 6242 can be done into strips, reduced manufacture difficulty.Second conductive thread, 6464 live widths of second conductive layer 646 are 0.2 μ m～5 μ m, need not aim at also and can realize visually-clear, have reduced the aligning difficulty.
See also the polarisation with touch control operation shown in Figure 3-optical filtering module 60, the first conductive layers 624 and also form by coating or plated film mode, concrete manufacturing process is as follows:
(1) plates layer of conductive material or be coated with one deck conductive ink and curing on whole an of surface of polaroid 620.Conductive material can be metal simple-substance, metal alloy, carbon nano-tube, Graphene, organic conductive macromolecule or ITO.
(2) coating photoresist, utilize the mask plate corresponding with first conductive unit 6242 of first conductive layer 624 to described photoresist expose, development again, only cover the photoresist corresponding with first conductive unit 6242 of first conductive layer 624 on first conductive layer 624, other local photoresist is removed.
(3) utilize lithographic technique that first conductive layer 624 is carried out etching, obtain first conductive unit 6242 separate, insulation, first conductive unit 6242 comprises first conductive grid 6246 that is intersected to form by first conductive thread 6244, thereby obtains having the polarisation assembly 62 of first conductive layer 624.The live width of first conductive thread 6244 is 0.2 μ m～5 μ m.
Step (4) is identical to step (9) with the step (4) of polarisation-optical filtering module 60 among Fig. 2 to step (9), repeats no more here.
In the above-mentioned method for making, the conductive material selectable range of first conductive layer 624 and second conductive layer 646 enlarges, and when conductive material is selected metal, can reduce the energy consumption of resistance and touch display screen.
See also Fig. 4, expression to be first conductive layer 624 form by coating or plated film mode, first conductive thread 6244 and second conductive thread 6464 all fall within situation on the gridline 642a in the projection of light shield layer 642, concrete manufacturing process is as follows:
The step (2) of step (1) step (1) of polarisation-optical filtering module 60 to step (2) and Fig. 2 is identical.
(3) utilize lithographic technique that first conductive layer 624 is carried out etching, obtain first conductive unit 6242 separate, insulation, first conductive unit 6242 comprises first conductive grid 6246 that is intersected to form by first conductive thread 6244, thereby obtains having the polarisation assembly of first conductive layer 624.The projection at light shield layer 642 of first conductive thread 6244 all falls within on the gridline 642a.
The step (9) of step (4) step (4) of polarisation-optical filtering module to step (9) and Fig. 1 is identical, except step (7).
Step (7), filled conductive material and solidifying in second groove 6432 obtains second conductive layer 646.Second conductive layer 646 comprises that a plurality of second conductive unit, 6462, the second conductive units 6462 that arrange along the space that second direction is extended comprise second conductive grid 6466 that is intersected to form mutually by second conductive thread 6464.The projection at light shield layer 642 of second conductive thread 6464 all falls within on the gridline 642a.Conductive material can be metal simple-substance or alloy, carbon nano-tube, Graphene, organic conductive macromolecule or ITO.
In the above-mentioned method for making, first conductive thread 6244 and second conductive thread 6464 all fall within on the gridline 642a in the projection of light shield layer 642, because light shield layer 642 has opaqueness, so conductive thread can not impact the light transmission of filter layer, can not reduce the transmittance of filter layer.
See also Fig. 5 and Fig. 6, expression be that first conductive layer 624 forms by the mode that embossed grooves recharges conductive material, concrete manufacturing process is as follows:
(1) at a surface coating impression glue of polaroid 620, forms the first impression glue-line 622.And the impression formboard of using first conductive unit 6242 with first conductive layer 624 to be nested impresses on the first impression glue-line, 622 surfaces and solidifies, and obtains first groove 6222.
(2) filled conductive material and solidifying in first groove 6222 obtains first conductive layer 624.First conductive layer 624 comprises that a plurality of first conductive unit, 6242, the first conductive units 6242 that arrange along the space that first direction extends comprise first conductive grid 6246 that is intersected to form mutually by first conductive thread 6244.First conductive thread 6244 shown in Figure 5 all falls within on the gridline 642a in the projection of light shield layer 642.The live width of first conductive thread 6244 shown in Figure 6 is 0.2 μ m～5 μ m, and first conductive grid 6246 is random grid.
Step (3) is identical to step (9) with the step (4) of the polarisation-optical filtering module among Fig. 2 to step (8), but second conductive thread 6464 all falls within on the gridline 642a in the projection of light shield layer 642.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (17)
1. polarisation-optical filtering module is characterized in that, comprising:
The polarisation assembly, comprise polaroid, and be arranged at first conductive layer of described polaroid one side, and described first conductive layer is the transparent or visually-clear conductive layer of physics, described first conductive layer comprises a plurality of first conductive units that arrange along the space that first direction extends;
Filtering assembly, comprise transparent substrates, light shield layer, filter layer and second conductive layer, described light shield layer is arranged at described transparent substrates one side, described light shield layer is lattice-shaped, comprise cross one another gridline, cut apart formed space by described gridline and form grid cell, described second conductive layer is located at described light shield layer away from a side of described transparent substrates, described second conductive layer is the visually-clear conductive layer, described second conductive layer comprises a plurality of second conductive units that arrange along the space that second direction is extended, described second conductive unit comprises second conductive grid that is intersected to form mutually by second conductive thread, described filter layer comprises a plurality of filter units, and described filter unit is positioned at described grid cell in the projection of described light shield layer;
Described first direction and described second direction are not parallel, described first conductive unit and described second conductive unit space and insulation on thickness direction.
2. polarisation according to claim 1-optical filtering module is characterized in that, described first conductive layer is formed by transparent conductive material, and described first conductive unit is strip.
3. polarisation according to claim 1-optical filtering module, it is characterized in that, described filtering assembly also comprises the second impression glue-line, the described second impression glue-line is positioned at described light shield layer away from a side of described substrate, the described second impression glue-line is provided with latticed second groove away from a side of described light shield layer, and described second conductive layer is formed by the conductive material that is filled in described second groove.
4. polarisation according to claim 3-optical filtering module is characterized in that, the described second impression glue-line is between described light shield layer and described filter layer.
5. polarisation according to claim 1-optical filtering module, it is characterized in that, described first conductive unit comprises first conductive grid that is intersected to form mutually by first conductive thread, and first conductive thread intersects to form grid node, and the live width of described first conductive thread is 0.2 μ m～5 μ m.
6. polarisation according to claim 5-optical filtering module is characterized in that, the distance of adjacent two grid node of first conductive layer is 50 μ m～800 μ m.
7. polarisation according to claim 1-optical filtering module is characterized in that, described first conductive unit comprises first conductive grid that is intersected to form mutually by first conductive thread, and first conductive thread all falls within on the described gridline in the projection of described light shield layer.
8. according to any described polarisation-optical filtering module in the claim 5 to 7, it is characterized in that each described first conductive grid projection on described filter layer is surrounded by at least one filter unit.
9. according to any described polarisation-optical filtering module in the claim 5 to 7, it is characterized in that, described polarisation assembly also comprises the first impression glue-line that is attached at described polaroid, the described first impression glue-line offers first groove, and described first conductive layer is solidify to form by the conductive material that is filled in described first groove.
10. polarisation according to claim 9-optical filtering module is characterized in that, the degree of depth of described first groove is less than the thickness of the described first impression glue-line, and the thickness of described first conductive thread is not more than the degree of depth of described first groove.
11. according to any described polarisation-optical filtering module in the claim 5 to 7, it is characterized in that described first conductive layer directly is attached to described polaroid surface.
12. according to claim 1 or 3 described polarisation-optical filtering modules, it is characterized in that described second conductive thread intersects to form grid node, the live width of described second conductive thread is 0.2 μ m～5 μ m.
13. polarisation according to claim 12-optical filtering module is characterized in that, the distance of adjacent two grid node of described second conductive layer is 50 μ m～800 μ m.
14. polarisation according to claim 1-optical filtering module is characterized in that, described second conductive thread all falls within on the gridline in the projection of described light shield layer.
15. polarisation according to claim 1-optical filtering module is characterized in that, the distance between adjacent described first conductive unit is 0.5 μ m～50 μ m; Distance between adjacent described second conductive unit is 0.5 μ m～50 μ m.
16. polarisation according to claim 1-optical filtering module is characterized in that, each described second conductive grid projection on described filter layer is surrounded by at least one filter unit.
17. a touch display screen is characterized in that, comprises the following polaroid that stacks gradually, TFT electrode, Liquid Crystal Module and as any described polarisation-optical filtering module in the claim 1 to 16.
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| CN2013102827372A CN103336630A (en) | 2013-07-05 | 2013-07-05 | Light polarizing-filtering module and touch display screen |
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