CN103345333A - Optical filter box and touch display screen using optical filter box - Google Patents

Abstract

An optical filter box comprises a substrate, a filtering layer, a first imprinting glue layer, a first conducting layer and a second conducting layer. The filtering layer is directly formed on a first surface of the substrate, the second conducting layer is directly formed on a second surface, and projection of first conducting wires and second conducting wires on the filtering layer all falls onto grid lines. According to the optical filter box, the first conducting layer and the second conducting layer form a sensing structure, and therefore the optical filter box can achieve touch operation and filtering, is beneficial to reducing the thickness of electronic equipment, and saves materials and assembly cost. The first conducting layer is formed in a manner of groove imprinting and conducting material filling, and the second conducting layer is directly formed on the second surface by utilizing good bonding performance of the substrate. Meanwhile, the wire width of the conducting wires can be increased so as to improve conducting performance of the conducting layers. The invention further provides a touch display screen using the optical filter box.

Description

Optical filter box and use the touch display screen of this optical filter box

Technical field

The present invention relates to display technique field, plane, particularly relate to a kind of optical filter box and use the touch display screen of this optical filter box.

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.Yet, touch-screen as with display screen assembly independently, when being used for the electronic product that some realize man-machine interactions, all need to order according to the size of display screen, assemble afterwards, with the formation touch display screen, but touch display screen can have touch control operation and Presentation Function simultaneously again.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.

Display screen mainly comprises polaroid, optical filter box, Liquid Crystal Module and thin film transistor (TFT) (TFT, Thin Film Transistor), therefore, display screen itself has had bigger thickness, and when continuing on the display screen applying touch-screen, will further increase its thickness, moreover, many one attaching process, just meaning has increased the bad probability of product, increases production cost of products greatly.

Summary of the invention

Based on this, be necessary to reach the cost problem of higher more greatly at thickness, a kind of touch display screen that is conducive to reduce the optical filter box of electronic product thickness and production cost and uses this optical filter box is provided.

A kind of optical filter box comprises:

Substrate comprises first surface and second surface, and described first surface and second surface are oppositely arranged;

Filter layer, be arranged at described first surface, comprise light shielding part and a plurality of filter unit, described light shielding part is lattice-shaped, comprise cross one another gridline, the space of being cut apart by described gridline forms some grid cells, and filter unit is contained in the grid cell, and described a plurality of filter units form optical filtering portion;

The first impression glue-line is arranged at described filter layer away from a side of described first surface, and the described first impression glue-line offers first groove;

First conductive layer, be embedded at the described first impression glue-line, comprise first conductive pattern that a plurality of intervals arrange, described first conductive pattern comprises first conductive grid, described first conductive grid is intersected to form by first conductive thread, first conductive thread intersects to form grid node, and described first conductive thread is formed by the conductive material that is filled in described first groove;

Second conductive layer is arranged at described second surface, comprises second conductive pattern that a plurality of intervals arrange, and described second conductive pattern comprises second conductive grid, and described second conductive grid is intersected to form by second conductive thread;

Wherein, described first conductive thread and second conductive thread all drop on the described gridline in the projection of described filter layer.

Among embodiment, the live width of described first conductive thread and second conductive thread is not more than the live width of described gridline therein.

Among embodiment, the thickness of described first conductive layer is not more than the degree of depth of described first groove therein.

Therein among embodiment, the thickness of described optical filtering portion is not less than the thickness of described light shielding part.

Therein among embodiment, described light shielding part is to have the lattice-shaped structure that the photoresist of black dyes forms at the described first impression glue-line.

Among embodiment, the interval width of adjacent two first conductive patterns of described first conductive layer is 0.5 μ m～50 μ m therein, and the interval width of adjacent two second conductive patterns of described second conductive layer is 0.5 μ m～50 μ m.

Therein among embodiment, the projection of described first conductive grid of each of described first conductive layer on described filter layer accommodates at least one filter unit, and the projection of described second conductive grid of each of described second conductive layer on described filter layer accommodates at least one filter unit.

Therein among embodiment, the filter unit number that described first conductive grid of each of described first conductive layer holds in each described second conductive grid projection on described filter layer of filter unit number that the projection on the described filter layer is held and described second conductive layer is inequality.

Therein among embodiment, the live width of described first conductive thread is less than the live width of described second conductive thread, and described first conductive grid of each of described first conductive layer is not more than the filter unit number that each described second conductive grid projection on described filter layer of described second conductive layer is held at the filter unit number that the projection on the described filter layer is held.

A kind of touch display screen comprises the TFT electrode, Liquid Crystal Module, optical filter box and the polaroid that stack gradually, and described optical filter box is above-described optical filter box.

Above-mentioned optical filter box and use the touch display screen of this optical filter box, optical filter box can be realized touch control operation and filtering functions simultaneously, combination as indispensable two assemblies in the display screen, when being used for display screen, can directly make display screen have touch controllable function, need not to assemble a 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 optical filter box of an embodiment;

Fig. 3 is the structural representation of the optical filter box of another embodiment;

Fig. 4 is the structural representation of the optical filter box of another embodiment;

Fig. 5 is again the structural representation of the optical filter box of an embodiment;

Fig. 6 is the structural representation at another visual angle of optical filter box shown in Figure 5;

Fig. 7 is the interval synoptic diagram of first conductive pattern or second conductive pattern in the optical filter box;

Fig. 8 is the interval synoptic diagram of first conductive pattern or second conductive pattern in the optical filter box;

Fig. 9 is the structural representation that an embodiment first conductive thread or second conductive thread project to filter layer;

Figure 10 projects to the structural representation of filter layer for another embodiment first conductive thread or second conductive thread;

Figure 11 projects to the structural representation of filter layer for another embodiment first conductive thread or second conductive thread;

Figure 12 is for an embodiment first conductive thread or second conductive thread project to the structural representation of filter layer again.

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.

The present invention proposes to be conducive to reduce the optical filter box of electronic product thickness and production cost and the touch display screen of this optical filter box of use.This optical filter box can be realized touch operation and filtering functions, thereby makes touch display screen have the touch Presentation Function.

Seeing also Fig. 1, is thetouch display screen 100 of an embodiment, comprises followingpolaroid 10, TFT electrode 20, Liquid CrystalModule 30,public electrode 40,diaphragm 50, theoptical filter box 200 that stacks gradually and goes up polaroid 60.In other embodiment, need not to arrangediaphragm 50 and also can.

TFT electrode 20 comprises glass baseplate 24 and the show electrode 22 that is arranged on the glass baseplate 24.Liquid Crystal Module comprisesliquid crystal 32 and is held on thealignment film 34 ofliquid crystal 32 both sides.

Be appreciated that when using backlight as polarized light source as the OLED polarized light source, need not downpolaroid 10, only needing upward,polaroid 60 gets final product.Structure and the function of the followingpolaroid 10 of present embodiment, TFT electrode 20, Liquid CrystalModule 30,public electrode 40,diaphragm 50,last polaroid 60 can be identical with existing product, do not repeat them here.

But butoptical filter box 200 has touch control operation and filtering functions simultaneously, makestouch display screen 100 have touch display function.Touch display screen can be the LCDs of straight-down negative or side entering type light source.

See also Fig. 2 to Fig. 5, expression be 200 4 different embodiment of optical filter box.Optical filter box 200 among above-mentioned four embodiment includessubstrate 210,filter layer 220, first impression glue-line 230, firstconductive layer 240 and second conductive layer 260.Whereinsubstrate 210 comprisesfirst surface 212 and thesecond surface 214 that is oppositely arranged.Substrate 210 is the transparent insulation material, as glass, is specifically as follows sillico aluminate glass and calcium soda-lime glass, has good cohesive force through the plasma treatment rear surface.General, the thickness range ofsubstrate 210 can be 0.1mm～0.5mm.

Filter layer 220 is arranged atfirst surface 212, compriseslight shielding part 222 and a plurality of filter unit.Light shielding part 222 is lattice-shaped, comprises some cross one another gridlines.The space of being cut apart by gridline forms some grid cells, and filter unit is contained in the grid cell.Can be contained in the grid cell by a filter unit, also can be contained in a plurality of grid cells by a filter unit.A plurality of filter units form optical filtering portion 224.General, the thickness range oflight shielding part 222 andoptical filtering portion 224 is 0.5 μ m～2 μ m.

The first impression glue-line 230 is arranged atfilter layer 220 away from a side offirst surface 212, and the first impression glue-line 230 offersfirst groove 232 away from a side of first surface 212.First groove 232 is the groove of mesh shape, and mesh shape can be preset to required figure as required.Firstconductive layer 240 is embedded at the first impression glue-line 230, comprises a plurality of firstconductive patterns 242, and 242 of a plurality of first conductive patterns are provided with at interval, so that 242 insulation of a plurality of first conductive pattern.Firstconductive pattern 242 comprises some first conductive grids, and first conductive grid is intersected to form by first conductive thread 2422.Firstconductive thread 2422 can intersect to form grid node, and described firstconductive thread 2422 is contained in described first groove 232.Firstconductive thread 2422 is formed by the conductive material that is filled infirst groove 232, and what conductive material can be among metal, carbon nano-tube, Graphene, organic conductive macromolecule and the ITO is at least a.In other embodiment, can also offerfirst groove 232 in a side of the first impression glue-line, 230 closefirst surfaces 212.

Secondconductive layer 260 is arranged atsecond surface 214, comprises a plurality of second conductive patterns 262.262 of a plurality of second conductive patterns are provided with at interval, so that a plurality of second conductive pattern, 262 mutually insulateds.Secondconductive pattern 262 comprises some second conductive grids, and second conductive grid is intersected to form by secondconductive thread 2622, and secondconductive thread 2622 of secondconductive pattern 262 is identical with the material of firstconductive thread 2422 of first conductive pattern 242.Secondconductive thread 2622 can intersect to form grid node.Secondconductive layer 260 is formed atsecond surface 214 by the plated film mode.In other embodiment, the material of firstconductive thread 2422 of firstconductive layer 240 also can be different with the material of secondconductive thread 2622 of secondconductive layer 260.

Wherein firstconductive thread 2422 and secondconductive thread 2622 all drop on the gridline in the projection of filter layer 220.Becauselight shielding part 222 has opaqueness, so firstconductive thread 2422 and secondconductive thread 2622 are all blocked by light shielding part, realized visually-clear, also can not reduce the transmittance of optical filtering portion simultaneously.

The live width of firstconductive thread 2422 and secondconductive thread 2622 is not more than the width of gridline, namely is less than or equal to the width of gridline.As shown in Figure 2, the live width of firstconductive thread 2422 and secondconductive thread 2622 all equals the width of gridline, to reduce the manufacture difficulty of conductive thread.As shown in Figure 3, the live width of any one is less than the width of gridline in firstconductive thread 2422 and secondconductive thread 2622, and another person's live width equals the width of gridline, is conducive to the optimization of cost of manufacture.As shown in Figure 4 and Figure 5, the live width of firstconductive thread 2422 and secondconductive thread 2622 is exposed to the risk of gridline side direction all less than the width of gridline with the reduction conductive thread.

Above-mentionedoptical filter box 200, the firstconductive layers 240 and secondconductive layer 260 constitute the capacitive sensing structure, makeoptical filter box 200 can realize touch control operation and filtering functions simultaneously, and the design that need not to put up a bridge, and have reduced task difficulty.When above-mentionedoptical filter box 200 is applied to display screen, can directly make display screen have touch controllable function, need not to assemble a touch-screen at display screen again, not only be conducive to reduce the thickness of electronic product, also save material and assembly cost greatly.First conductive thread 2322 obtains by the mode of embossed grooves-filled conductive material, the selectable expanded range of conductive material, secondconductive thread 2622 directly is formed at the substrate second surface by the metal coating mode, utilizedsubstrate 210 to have adhesive property preferably, thereby saved coating one deck impression glue-line, further reduced the thickness of optical filter box.When firstconductive thread 2422 and secondconductive thread 2622 when the projection offilter layer 220 all drops on the gridline, becauselight shielding part 222 has opaqueness, so firstconductive thread 2422 and secondconductive thread 2622 are all blocked bylight shielding part 222, realize visually-clear, also can not reduce the transmittance ofoptical filtering portion 224 simultaneously.

The live width of firstconductive thread 2422 and secondconductive thread 2622 is not more than the width of gridline, can make firstconductive thread 2422 and secondconductive thread 2622 not exceed gridline, thereby can not blockfilter layer 220, can not reduce the transmittance offilter layer 220.

See also Fig. 5 and Fig. 6, in present embodiment,optical filtering portion 224 is formed by chromatic photoresist, can be formed with a chromatic photoresist in each grid cell, also can be formed with a chromatic photoresist in every a plurality of grid cells, and chromatic photoresist forms filter unit.Chromatic photoresist is that the photoresist that has coloured dye forms, and can adopt exposure-developing manufacture process.That chromatic photoresist is generally is red (red, R) photoresistance, it is green that (green, G) (blue, B) photoresistance are used for making incident light be transformed into monochromatic light, realize filtering functions for photoresistance or indigo plant.Light shielding part 222 is formed at the first impression glue-line 230 for the photoresist that has black dyes, andlight shielding part 222 is lattice-shaped, has opaqueness, can adopt exposure-developing manufacture process.Grid cell is square in the lattice-shaped, makes the photoresistance ofoptical filtering portion 224 arrange compacter and even.Light shielding part 222 can effectively be avoided chromatic photoresist colour contamination each other, and can increase the contrast of R, G, B light.

In present embodiment, the material of the first impression glue-line 230 is solvent-free ultra-violet curing acrylic resin, and thickness range is 2 μ m～10 μ m.The first impression glue-line 230 is transparence, does not influence whole transmitance.In other embodiments, the material of the first impression glue-line 230 can also be visible-light curing resin or heat reactive resin.

The above-mentioned optical filter box that has touch controllable function, manufacturing process is as follows particularly:

(1)first surface 212 and thesecond surface 214 atsubstrate 210 at first carries out plasma (Plasma) processing.Dirty with thefirst surface 212 of removingsubstrate 210 andsecond surface 214, and makefirst surface 212 andsecond surface 214 ionizations increases follow-up and cohesive force other material.

(2) at 214 whole metal claddings of second surface ofsubstrate 210 or be coated with the layer of metal conductive ink, to form second conductive layer 260.The metal that present embodiment adopts is argent.In other embodiment, can also adopt at least a as in the metals such as gold, copper, aluminium, zinc, tin, molybdenum.

(3) at the surface of secondconductive layer 260 coating one deck photoresist, through overexposure-developing technique, only keep the photoresist that is covered in second conductive pattern, 262 parts, the photoresist of other parts is removed.

(4) utilize metal etch liquid that secondconductive layer 260 is carried out etching, obtain second conductive pattern, 262 parts of required pattern, secondconductive pattern 262 comprises second conductive grid, and second conductive grid is formed by secondconductive thread 2622 that intersects.

(5) 212 whole of first surfaces atsubstrate 210 arrange the photoresist that one deck has black dyes.

(6) adopt exposure-developing technique, the photoresist in filter unit zone is removed, form thelight shielding part 222 of lattice-shaped.Light shielding part 222 comprises some gridlines, and the space of being cut apart by gridline forms some grid cells.

(7) in the grid cell gradation R/G/B chromatic photoresist is set, formsoptical filtering portion 224.

(8) at the side coating impression glue offilter layer 220 away fromfirst surface 212, form the first impression glue-line 230.Present embodiment adopts solvent-free ultra-violet curing acrylic resin.And use the impression block nested with firstconductive pattern 242 to impress on the first impression glue-line, 230 surfaces and solidify, obtain required andfirst grooves 232 first conductive pattern, 242 couplings.

(9) also solidify to first groove, the 232 interior filled conductive materials simultaneously with first conductive pattern, 242 couplings, obtain first conductive layer 240.Firstconductive layer 240 comprises that first conductive pattern, 242, the firstconductive patterns 242 that a plurality of intervals arrange comprise first conductive grid that is intersected to form by first conductive thread 2422.Conductive material comprises at least a among metal, carbon nano-tube, Graphene, organic conductive macromolecule and the ITO, forms by firstconductive thread 2422 to intersect first conductive grid that constitutes.Be preferably metal, as nanometer silver paste.When selecting metal for use, the energy consumption that can reduce resistance and reduce touch display screen.Firstconductive thread 2422 and secondconductive thread 2622 all drop on the gridline in the projection offilter layer 220.

At least one and described filter unit similar fitgures each other in described first conductive grid and described second conductive grid, at least one center line is in the projection of describedfilter layer 220 and the central lines of described gridline in firstconductive thread 2422 and second conductive thread 2622.I.e. firstconductive thread 2422 and second conductive thread, 2622 positive alignment gridlines.Conductive grid is that conductive thread intersects to form, and grid cell is cut apart by gridline and formed, and filter unit is formed at grid cell.So in the present embodiment, the shape that can make conductive grid is identical with the shape of filter unit but vary in size, and namely conductive grid and filter unit similar fitgures each other guarantee that simultaneously conductive grid does not exceed gridline in the projection of filter layer 220.If do not specify it is first conductive thread or second conductive thread, conductive thread herein can refer to first conductive thread and/or second conductive thread.Conductive grid can refer to first conductive grid and/or second conductive grid.Conductive pattern can refer to first conductive pattern and/or second conductive pattern.

See also Fig. 5, in present embodiment, the center line of firstconductive thread 2422 and secondconductive thread 2622 the projection offilter layer 220 all with the central lines of gridline.Further reduced firstconductive thread 2422 and secondconductive thread 2622 exposes the probability in gridline zone.Certainly, in other embodiments, any one is over against gridline in all right firstconductive thread 2422 and secondconductive thread 2622, other one satisfy the scope that projection atfilter layer 220 do not exceed gridline gets final product, because firstconductive layer 240 and secondconductive layer 260 are blocked by gridline on the backlight exit direction of display screen, the grid cycle stack of conductive grid on firstconductive layer 240 and secondconductive layer 260 and louver (-vre) can not appear, therefore, effectively avoided the Moire fringe phenomenon.

The thickness of described firstconductive layer 240 is not more than the degree of depth of described first groove 232.In present embodiment, the thickness of firstconductive layer 240 is less than the thickness offirst groove 232, and the degree of depth offirst groove 232 is less than the thickness of the first impression glue-line 230.Can prevent firstconductive layer 240 form the back in subsequent technique by scratch.

See also Fig. 5 and Fig. 6, in present embodiment, the thickness ofoptical filtering portion 224 is not less than the thickness of light shielding part 222.That is to say that the thickness of filter unit is greater than or equal to the thickness of gridline.When the thickness ofoptical filtering portion 224 during greater than the thickness oflight shielding part 222, from the light thatoptical filtering portion 224 appears, not only can see from the front, also can see from the side, thereby can increase the light emission rate ofoptical filtering portion 224.

In present embodiment, adjacent conductive pattern setting interval is with mutually insulated.As shown in Figure 7 and Figure 8, be the synoptic diagram of the different modes at the interval of a plurality of conductive patterns of arbitrary conductive layer in firstconductive layer 240 and second conductive layer 260.The interval width of adjacent two conductive patterns all can be the width of a filter unit in firstconductive layer 240 and second conductive layer 260.Can cut off this moment by full line or permutation conductive thread disappearance.Can also firstconductive layer 240 and secondconductive layer 260 in the interval width scope of adjacent two conductive patterns be 0.5 μ m～50 μ m.This moment can be by cutting off conductive thread marginal portion disappearance.In other embodiments, also can one deck conductive layer in the interval width scope of two adjacent conductive patterns be the width of a filter unit, the interval width scope of two adjacent conductive patterns is 0.5 μ m～50 μ m in another layer conductive layer.

See also Fig. 6, in present embodiment, firstconductive thread 2422 and second conductive thread, 2622 straight lines, curve or broken line.When firstconductive thread 2422 and secondconductive thread 2622 can be for difformities, reduced production requirement.

As shown in Figure 9, each first conductive grid projection onfilter layer 220 of firstconductive layer 240 accommodates a filter unit, and each second conductive grid projection onfilter layer 220 of secondconductive layer 260 accommodates a filter unit.Because firstconductive thread 2422 and secondconductive thread 2622 are all aimed at gridline, so the filter unit that holds is integer, in this implementation column, quantity is one.Because each grid cell is to there being a conductive grid, so the density of conductive grid is bigger, electric conductivity is better.

Extremely shown in Figure 12 as Figure 10, each first conductive grid projection onfilter layer 220 of firstconductive layer 240 accommodates at least two filter units, and each second conductive grid projection onfilter layer 220 of secondconductive layer 260 accommodates at least two filter units.Because firstconductive thread 2422 and secondconductive thread 2622 are all aimed at gridline, so it is individual that the filter unit that holds is integer, quantity is at least two, can be according to the resistance of conductive layer being required and the requirement of the coating weight of conductive material decides the filter unit quantity of holding.

Can be divided into three kinds of situations this moment, and laterally to be X-axis, the direction of vertical transverse is Y-axis.As shown in figure 10, only on X-direction, at least two filter units are held in the projection of each conductive grid onfilter layer 220 of firstconductive layer 240 and second conductive layer 260.As shown in figure 11, only on Y direction, at least two filter units are held in the projection of each conductive grid onfilter layer 220 of firstconductive layer 240 and second conductive layer 260.As shown in figure 12, on X-axis and Y direction, at least two filter units are held in the projection of each conductive grid onfilter layer 220 of firstconductive layer 240 and secondconductive layer 260 simultaneously.

In present embodiment, the filter unit number that each first conductive grid of firstconductive layer 240 holds in each second conductive grid projection onfilter layer 220 of filter unit number that the projection on thefilter layer 220 is held and secondconductive layer 260 can be inequality.Can effectively reduce manufacture difficulty.Certainly, in other embodiment, the filter unit number that each first conductive grid of firstconductive layer 240 holds in filter unit number that the projection on thefilter layer 220 is held and each second conductive grid projection onfilter layer 220 of secondconductive layer 260 can also be identical.

The live width of first conductive thread 2422 is less than the live width of second conductive thread 2622.By the definition of resistance as can be known, resistance is directly proportional with length, is inversely proportional to cross-sectional area.So also be inversely proportional to live width, when live width was more wide, resistance was more big.So the resistance of first conductive thread 2422 is less than the live width of second conductive thread 2622.Each first conductive grid of first conductive layer 240 is not more than the filter unit number that each second conductive grid projection on filter layer 220 of second conductive layer 260 is held at the filter unit number that the projection on the filter layer 220 is held.Namely the mesh-density of first conductive layer 240 is greater than the mesh-density of second conductive layer 260, and the resistance of first conductive layer 240 is greater than the resistance of second conductive layer 260 at this moment.In sum, the live width of first conductive thread 2422 is arranged to live width less than second conductive thread 2622, each first conductive grid of first conductive layer 240 is not more than the filter unit number that each second conductive grid projection on filter layer 220 of second conductive layer 260 is held at the filter unit number that the projection on the filter layer 220 is held, so that the resistance of first conductive layer 240 and second conductive layer 260 can be not too wide in the gap.

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 (10)

1. an optical filter box is characterized in that, comprising:

Substrate comprises first surface and second surface, and described first surface and second surface are oppositely arranged;

Filter layer, be arranged at described first surface, comprise light shielding part and a plurality of filter unit, described light shielding part is lattice-shaped, comprise cross one another gridline, the space of being cut apart by described gridline forms some grid cells, and filter unit is contained in the grid cell, and described a plurality of filter units form optical filtering portion;

The first impression glue-line is arranged at described filter layer away from a side of described first surface, and the described first impression glue-line offers first groove;

First conductive layer, be embedded at the described first impression glue-line, comprise first conductive pattern that a plurality of intervals arrange, described first conductive pattern comprises first conductive grid, described first conductive grid is intersected to form by first conductive thread, and described first conductive thread is formed by the conductive material that is filled in described first groove;

Second conductive layer is arranged at described second surface, comprises second conductive pattern that a plurality of intervals arrange, and described second conductive pattern comprises second conductive grid, and described second conductive grid is intersected to form by second conductive thread;

Wherein, described first conductive thread and second conductive thread all drop on the described gridline in the projection of described filter layer.

2. optical filter box according to claim 1 is characterized in that, the live width of described first conductive thread and second conductive thread is not more than the live width of described gridline.

3. optical filter box according to claim 1 is characterized in that, the thickness of described first conductive layer is not more than the degree of depth of described first groove.

4. optical filter box according to claim 1 is characterized in that, the thickness of described optical filtering portion is not less than the thickness of described light shielding part.

5. optical filter box according to claim 1 is characterized in that, described light shielding part is to have the photoresist of black dyes at the lattice-shaped structure of the described first impression glue-line formation.

6. optical filter box according to claim 1, it is characterized in that, the interval width of adjacent two first conductive patterns of described first conductive layer is 0.5 μ m～50 μ m, and the interval width of adjacent two second conductive patterns of described second conductive layer is 0.5 μ m～50 μ m.

7. optical filter box according to claim 1, it is characterized in that, the projection of described first conductive grid of each of described first conductive layer on described filter layer accommodates at least one filter unit, and the projection of described second conductive grid of each of described second conductive layer on described filter layer accommodates at least one filter unit.

8. optical filter box according to claim 7, it is characterized in that the filter unit number that described first conductive grid of each of described first conductive layer holds in each described second conductive grid projection on described filter layer of filter unit number that the projection on the described filter layer is held and described second conductive layer is inequality.

9. optical filter box according to claim 8, it is characterized in that, the live width of described first conductive thread is less than the live width of described second conductive thread, and described first conductive grid of each of described first conductive layer is not more than the filter unit number that each described second conductive grid projection on described filter layer of described second conductive layer is held at the filter unit number that the projection on the described filter layer is held.

10. a touch display screen is characterized in that, comprises the TFT electrode, Liquid Crystal Module, optical filter box and the polaroid that stack gradually, and described optical filter box is any described optical filter box in the claim 1 to 9.

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