CN103033980A - Optical filter base plate and material embedded with optical type touch control panel and infrared filter layer - Google Patents
Optical filter base plate and material embedded with optical type touch control panel and infrared filter layer Download PDFInfo
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- CN103033980A CN103033980A CN201210550988XA CN201210550988A CN103033980A CN 103033980 A CN103033980 A CN 103033980A CN 201210550988X A CN201210550988X A CN 201210550988XA CN 201210550988 A CN201210550988 A CN 201210550988A CN 103033980 A CN103033980 A CN 103033980A
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Abstract
The invention provides a color optical filter base plate used for embedding an optical type touch control display panel. The color filter base plate comprises a base material, a visible light shielding structure, a color optical filter layer and an infrared optical filter layer, wherein the visible light shielding structure is arranged on the base material for defining a sub pixel region and a touch control sensing region of the base material, the color optical filter layer covers the sub pixel region, and the infrared filter layer covers the touch control sensing region. The infrared filter layer is made of single infrared penetrable materials, and in addition, the transmissivity of the infrared penetrable materials in the infrared wavelength range is greater than the transmissivity in the visible light wavelength range. The invention also provides a material which is embedded with the optical type touch control display panel and the infrared filter layer and comprises the color optical filter base plate.
Description
Technical field
The invention relates to a kind of colored filter substrate, particularly a kind of colored filter substrate for embedded optical touch display panel.
Background technology
Touch-controlling interface be owing to can allow the user easily input data and point selection function, therefore relevant also more and more polynary change of touch-control display panel.Touch-control display panel can be divided into external hanging type (out-cell) touch-control display panel and embedded touch display panel according to the position of contact panel.The external hanging type touch-control display panel is to add the last layer contact panel in the outside of display panel.As for the embedded touch display panel, with display panels, according to the position of touch-control sensing assembly, can be divided into the touch-control sensing assembly is arranged at and drive on the substrate (belonging to in-cell) and (belong to on-cell) on the colored filter substrate etc. two types with being arranged at.In addition, according to principle of induction, the embedded touch display panel can be subdivided into again resistance-type (resistive), condenser type (capacitive) and optical profile type (optical) touch-control display panel.
Wherein, optical touch display panel is that the shade that produces when seeing through the detecting shading is judged the position that the user touches.But because the black matrix" resin (Resin Black Matrix, RBM) in the general colored filter substrate can cover infrared light and visible light, therefore can not be arranged at the material that drives the touch-control sensing assembly on the substrate as correspondence.Therefore, need a kind of under infrared light wavelength scope the high material of transmittance, to overcome foregoing problems.
Summary of the invention
The invention provides a kind of colored filter substrate, it has penetrability in infrared light wavelength scope greater than the infrared light filter layer of the penetrability in visible wavelength range, and can be applicable to embedded optical touch display panel.
An aspect of the present invention provides a kind of colored filter substrate for embedded optical touch display panel, and it comprises base material, visible light masking structure, chromatic filter layer and infrared light filter layer.The visible light masking structure is arranged on the base material, with sub picture element district and the touch-control sensing district that defines base material.Chromatic filter layer covers each sub picture element district.The infrared light filter layer is covered to small part touch-control sensing district.The infrared light filter layer is to be made by single infrared light penetrable material, and the penetrability of material in infrared light wavelength scope is greater than the penetrability in visible wavelength range.
Another aspect of the present invention is that a kind of embedded optical touch display panel is being provided, and comprises above-mentioned colored filter substrate, drives substrate and display medium.Drive substrate and be parallel to colored filter substrate, and comprise the respectively touch-control sensing district of paired corresponding colored filter substrate of several touch-control sensing assemblies.Display medium is located in colored filter substrate and drives between the substrate.
Another aspect of the present invention is that it comprises light curable material, light initiator, pigment in the infrared light penetrable material of the infrared light filter layer that a kind of colored filter substrate for the manufacture of embedded optical touch display panel is provided.Pigment accounts for gross weight 40 to 80 wt%.The penetrability of this material in infrared light wavelength scope is greater than the penetrability in visible wavelength range.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, appended graphic being described as follows:
Figure 1A is the top view that shows according to the colored filter substrate of an embodiment of the present invention.
Figure 1B is the diagrammatic cross-section that shows according to the colored filter substrate of an embodiment of the present invention.
Fig. 2 A is the top view that shows according to the colored filter substrate of another embodiment of the present invention.
Fig. 2 B is the diagrammatic cross-section that shows according to the colored filter substrate of another embodiment of the present invention.
Fig. 3 is the diagrammatic cross-section that shows according to the embedded optical touch display panel of an embodiment of the present invention.
Fig. 4 is the diagrammatic cross-section that shows according to the embedded optical touch display panel of another embodiment of the present invention.
Fig. 5 A is the infrared light spectrum figure that shows according to the photoresistance of an embodiment of the present invention.
Fig. 5 B is the enlarged drawing of Fig. 5 A.
[primary clustering symbol description]
30,40: embedded optical touch display panel
100a, 200a: colored filter substrate
110: base material
120: the visible light masking structure
120a: sub picture element district
120b: touch-control sensing district
130: chromatic filter layer
130a, 130b, 130c: sub-chromatic filter layer
140: the infrared light filter layer
150: transparency conducting layer
300: drive substrate
310: the touch-control sensing assembly
400: display medium.
Embodiment
Below will be with graphic exposure a plurality of embodiments of the present invention, as clearly stated, the details on many practices will be explained in the following description.Yet, have in the technical field under any and know that usually the knowledgeable should be appreciated that the details on these practices do not use to limit the present invention.In addition, for the purpose of simplicity of illustration, some known habitual structures and assembly middlely will illustrate it in the mode of simple signal graphic.
Figure 1A is the top view that shows according to the colored filter substrate 100a of an embodiment of the present invention.Figure 1B is the diagrammatic cross-section along the line segment of the 1B-1B ' of Figure 1A.Please consult simultaneously Figure 1A and Figure 1B, colored filter substrate 100a comprises base material 110, visible light masking structure 120, chromatic filter layer 130 and infrared light filter layer 140.Embodiments of the present invention are by the infrared light penetrable material that consists of infrared light filter layer 140, its penetrability in infrared light wavelength scope is greater than the characteristic of the penetrability in visible wavelength range, makes it to can be applicable to the colored filter substrate in the embedded optical touch display panel.
In this article, " infrared light wavelength scope " refers to that wavelength is 780 to 1000 scopes of rice how." visible wavelength range " refers to that wavelength is 390 to 780 scopes of rice how.Generally speaking, can utilize infrared light-visible spectrometry to come the transmittance of test material under visible light and infrared light scope.
Above-mentioned base material 110 for example can be the flexual transparent plastic substrate of glass, quartz or tool.
Visible light masking structure 120 is arranged on the base material 110, to define sub picture element district 120a on the base material 110 and the position of touch-control sensing district 120b, shown in Figure 1A.For example can form one deck visible light masking material at base material 110 first, re-use optical photomicrography resolution and form visible light masking structure 120, to define sub picture element district 120a and touch-control sensing district 120b.But do not limit position and the area of sub picture element district 120a and touch-control sensing district 120b at this.Specifically, the position of sub picture element district 120a and touch-control sensing district 120b and area can decide according to the position of the touch-control sensing assembly of the driving substrate of correspondence, also can design with reference to the aperture opening ratio of number, combination and each sub picture element of sub picture element.Therefore, Figure 1A only is that the illustration of a wherein embodiment is graphic, and is non-in order to limit the present invention.
For the touch-control sensing assembly that makes correspondence can detect the variation of infrared light, thus on touch-control sensing district 120b, infrared light filter layer 140 is set, shown in Figure 1A.For infrared light filter layer 140, the penetrability in infrared light wavelength scope will reach high, and the penetrability in visible wavelength range is enough low, just can be applied to the colored filter substrate in the embedded optical touch display panel.Accordingly, provide a kind of infrared light penetrable material of novelty, it possesses above-mentioned light transmission features is arranged.This material includes light curable material, light initiator and pigment.Pigment accounts for gross weight 40 to 80 wt%.
Light curable material is to be solidified to form by irradiation generation photopolymerization reaction.Light curable material can be that monomer, acrylic acid are oligomer or its potpourri for acrylic acid for example.In one embodiment, light curable material accounts for gross weight 10 to 30wt%.
Acrylic acid is that monomer can be for example for having the monomer of one or more acrylic.For instance, acrylic acid is that monomer can be dipentaerythritol six (methyl) acrylate, dipentaerythritol five (methyl) acrylate, pentaerythrite four (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, pentaerythrite three (methyl) acrylate, pentaerythrite (methyl) acrylate, diallyl phthalate, tripropylene glycol two (methyl) acrylate, neopentyl glycol two (methyl) acrylate propylene oxide adduct, ethylene glycol (methyl) acrylate, diethylene glycol two (methyl) acrylate, propylene glycol two (methyl) acrylate, dipropylene glycol two (methyl) acrylate, polyglycol two (methyl) acrylate, polypropylene glycol two (methyl) acrylate, two (methyl) Hexyl 2-propenoate, neopentyl glycol two (methyl) acrylate, two (methyl) acrylic acid glyceride, three (methyl) acrylic acid glyceride, four (methyl) acrylic acid glyceride, fourth trimethylolpropane tris (methyl) acrylate, BDO diacrylate or its potpourri.In one embodiment, acrylic acid is 4 to 15 wt% that monomer accounts for gross weight.
Acrylic acid is that oligomer can for example be urethane acrylate, polyester acrylate, polyether acrylate, epoxy acrylate, silicone acrylate, urethane methacrylate, polyester methacrylate, polyethers methacrylate, epoxy methacrylates or its potpourri.In one embodiment, acrylic acid be oligomer account for gross weight 5 to 15wt%.
The light initiator can be such as being 1-hydroxyl-cyclohexyl-phenyl-ketone, 2-methyl isophthalic acid (4-(sulphomethyl) benzene)-2-morpholino propane-1-Tong, Benzyl base Ketene dimethyl, 1-(4-ten dicarbonyl benzene)-2-hydroxy-2-methyl propane-1-ketone, 2-hydroxy-2-methyl-1-phenyl-propane-1-ketone, 1-(4-cumene)-2-hydroxy-2-methyl propane-1-ketone, diphenylketone etc.In one embodiment, the light initiator accounts for 2 to 10 wt% of gross weight.
Above-mentioned pigment refers to have the colorant of color development ability.In one embodiment, pigment is to be selected from the group that is made of organic pigment, inorganic pigment and composition thereof.
In one embodiment, organic pigment is selected from the group that is made of red pigment, yellow uitramarine, viridine green, blue pigment, violet pigment and composition thereof.Above-mentioned color pigment can for example be color index (C.I.; The distribution of The Society of Dyers and Colourists company) is classified as the compound of pigment in.
Red pigment for example is C.I. paratonere 1, C.I. paratonere 2, C.I. pigment red 3, C.I. paratonere 177 or C.I. paratonere 254.
Yellow uitramarine for example is C.I. pigment yellow 1, C.I. pigment yellow 3, C.I. pigment Yellow 12, C.I. pigment yellow 13, C.I. pigment yellow 83, C.I. pigment yellow 13 8, C.I. pigment yellow 13 9, C.I. pigment yellow 150, C.I. pigment yellow 180 or C.I. pigment yellow 185.
Viridine green for example is pigment Green 7 or C.I. pigment green 36.
Blue pigment for example is C.I. pigment blue 15, C.I. pigment blue 15-3, C.I. pigment blue 15-4 or C.I. pigment blue 15-6.
Violet pigment for example is C.I. purple 23 or C.I. pigment Violet 23-19.
In one embodiment, above-mentioned inorganic pigment is selected from by titanium dioxide, barium sulphate, calcium carbonate, zinc white, lead sulfate, the group that black, synthetic iron black, carbon black of lead and yellow-collation, zinc yellow, colcother (red iron oxide (III)), cadmium red, ultramarine blue, Prussian blue, chrome oxide green, cobalt green, ocher, titanium and composition thereof consists of.
In one embodiment, the pigment in the infrared light penetrable material includes red pigment, viridine green and blue pigment, makes material under visible wavelength range, has extremely low transmittance.Red pigment accounts for 25 to 40 wt% of gross weight, and viridine green accounts for 5 to 15 wt% of gross weight, and blue pigment accounts for 10 to 25 wt% of gross weight.
The material of infrared light filter layer 140 more can comprise stable auxiliary agent, coloured dye and solvent.Stable auxiliary agent can be interfacial agent, for example is polysiloxane, upgrading polysiloxane, polyethers upgrading polysiloxane, polyester upgrading polysiloxane or its combination.Coloured dye for example can be nitroso-dyes (nitroso dye), azo dyes (azodye), nitro dye (nitro dye) or its combination.Solvent for example can be propylene glycol monomethyl ether or other suitable solvent.In one embodiment, stable auxiliary agent accounts for 0.2 to 1 wt% of gross weight.In one embodiment, coloured dye accounts for 10 to 15 wt% of gross weight.In one embodiment, solvent accounts for 20 to 35 wt% of gross weight.
The infrared light penetrable material can be produced infrared light filter layer 140 by optical photomicrography resolution.In one embodiment, infrared light filter layer 140 corresponding wavelength of producing are more than or equal to 850 infrared lights of rice how, and its penetrability is greater than 70%.
Specifically, the penetrability of infrared light filter layer 140 in visible wavelength range of making is extremely low.In one embodiment, infrared light filter layer 140 corresponding wavelength are 400 to 780 visible lights of rice how, and its penetrability is preferably less than 3% less than 5%, and better is less than 2%.In one embodiment, infrared light filter layer 140 corresponding wavelength are 400 to 700 visible lights of rice how, and its penetrability is preferably less than 0.5% less than 1%, and better is less than 0.2%.In one embodiment, the optical density (OD) of infrared light filter layer 140 (optical density, OD) value is greater than 4.2.
In one embodiment, as shown in Table 1, the various materials that at first will make the infrared light filter layer mix and dissolving.Behind coating, baking, exposure, development and etch process, form thickness and be about 4.5 microns infrared light filter layer.The OD value of this infrared light filter layer is approximately 4.9.
And, this infrared light filter layer is carried out the penetrability test.Shown in 5A figure and 5B figure, infrared light filter layer corresponding wavelength is more than or equal to 850 infrared lights of rice how, and its penetrability is greater than 78 %.Corresponding wavelength is 400 to 780 visible lights of rice how, and its penetrability is less than 2%.Corresponding wavelength is 400 to 700 visible lights of rice how, and its penetrability is less than 0.2%.By this, learn that this infrared light filter layer really can effectively block visible light and allow infrared light to penetrate, and can be applied to the colored filter substrate in the embedded optical touch display panel.
In one embodiment, visible light masking structure 120 is conventional resins black matrix" (Resin Black Matrix, RBM) material, and it can cover infrared light and visible light effectively, avoids the panel light leak.
Because infrared light penetrable material of the present invention also has the good character of covering to visible light, therefore in one embodiment, visible light masking structure 120 also can be made by consisting of the identical material of infrared light filter layer 140.In other words, visible light masking structure 120 is one-body molded with infrared light filter layer 140, shown in 2B figure.Compared to the structure of making shown in Figure 1A, make the required fabrication steps of structure shown in Fig. 2 A less, and can save the processing procedure cost.
In one embodiment, colored filter substrate 100a, 100b more comprise a transparency conducting layer 150 and cover on visible light masking structure 120, chromatic filter layer 130 and the infrared light filter layer 140, shown in Figure 1B and Fig. 2 B.The material of transparency conducting layer 150 can be tin indium oxide.Can utilize the long-pending method of the long-pending method in physical vapor Shen or chemical gaseous phase Shen to make transparency conducting layer 150.
Fig. 3 is the diagrammatic cross-section that shows according to the embedded optical touch display panel of an embodiment of the present invention.Embedded optical touch display panel 30 comprises colored filter substrate 100a, drives substrate 300 and display medium 400.Fig. 4 is the diagrammatic cross-section that shows according to the embedded optical touch display panel of another embodiment of the present invention.Embedded optical touch display panel 40 comprises colored filter substrate 200a, drives substrate 300 and display medium 400.
As shown in Figure 3, drive substrate 300 and be parallel to colored filter substrate 100a, and driving substrate 300 comprises several touch-control sensing assemblies 310, the touch-control sensing district 120b of the paired corresponding colored filter substrate 100a of difference.Driving substrate 300 can be plurality of groups of substrates of thin-film transistor for example, and is provided with several touch-control sensing assemblies 310.Do not limit ad-hoc location and the area of touch-control sensing assembly 310 at this, as long as each touch-control sensing assembly 310 all has corresponding touch-control sensing district 120b.In other words, infrared light filter layer 140 can be considered several infrared light optical filters, and each touch-control sensing assembly 310 can correspond to one of them infrared light optical filter.Display medium 400 can for example be liquid crystal layer.The driving substrate 300 of Fig. 4, the embodiment of display medium 400 can be identical with the embodiment of the driving substrate 300 of Fig. 3, display medium 400, therefore repeat no more.
In addition, when the outside surface of finger or pointer touching base material 110, can cover by backlight module (not illustrating) and penetrate and sequentially penetrate the infrared light that drives substrate 300, display medium 400 and infrared light filter layer 140, infrared light is reflected and by touch-control sensing assembly 310 detecting by base material 110, and then confirm touch position.But the light of the wavelength coverage that non-genus touch-control sensing assembly 310 receives can be upset touch-control sensing assembly 310 and receive signal, and causes noise to increase, and news are assorted to be reduced than (signal-to-noise ratio, SNR or S/N).Therefore, preferably reduce the penetrability of infrared light filter layer 140 under visible wavelength range, to promote the assorted ratio of the news of touch-control sensing assembly 310 when receiving signal.
And the penetrability of the infrared light filter layer 140 of embodiments of the present invention in infrared light wavelength scope is high, and the penetrability in visible wavelength range is extremely low, makes driving substrate 300 have the assorted ratio of high news when receiving signal, and can address the above problem.
In sum, infrared light penetrable material of the present invention has but characteristic of the penetrable and visible photoresistance of infrared light, except can effectively replacing traditional RBM photoresistance, also can apply to make the assembly that need possess the infrared light through characteristic.
Although the present invention discloses as above with embodiment; right its be not to limit the present invention, anyly have the knack of this skill person, without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (18)
1. colored filter substrate that is used for embedded optical touch display panel is characterized in that comprising:
One base material;
One visible light masking structure is arranged on this base material, with a plurality of sub picture elements district and a plurality of touch-control sensings district that defines this base material;
One chromatic filter layer covers each those sub picture element district; And
One infrared light filter layer is covered to those touch-control sensing districts of small part,
Wherein this infrared light filter layer is to be made by single infrared light penetrable material, and the penetrability of this infrared light penetrable material in infrared light wavelength scope is greater than the penetrability in visible wavelength range.
2. colored filter substrate according to claim 1, it is characterized in that: wherein this visible light masking structure and this infrared light filter layer are to be made by identical material.
3. colored filter substrate according to claim 1 is characterized in that: wherein this infrared light filter layer corresponding wavelength be 400 to 780 how the penetrability of the visible light of rice less than 5%.
4. colored filter substrate according to claim 1 is characterized in that: wherein this infrared light filter layer corresponding wavelength be 400 to 700 how the penetrability of the visible light of rice less than 1%.
5. colored filter substrate according to claim 1 is characterized in that: wherein this infrared light filter layer corresponding wavelength more than or equal to 850 how the penetrability of the infrared light of rice greater than 70%.
6. colored filter substrate according to claim 1, it is characterized in that: wherein the optical density (OD) of this infrared light filter layer (optical density, OD) value is greater than 4.2.
7. colored filter substrate according to claim 1, it is characterized in that: wherein the material of this infrared light filter layer comprises:
Light curable material;
The light initiator; And
A plurality of pigment account for gross weight 40 to 80 wt%.
8. colored filter substrate according to claim 7, it is characterized in that: wherein those pigment are to be selected from the group that is made of organic pigment, inorganic pigment and composition thereof.
9. colored filter substrate according to claim 8, it is characterized in that: wherein this organic pigment is to be selected from the group that is made of red pigment, yellow uitramarine, viridine green, blue pigment, violet pigment and composition thereof.
10. colored filter substrate according to claim 8, it is characterized in that: wherein this organic pigment comprises red pigment, viridine green and blue pigment, this red pigment accounts for 25 to 40 wt% of gross weight, this viridine green accounts for 5 to 15 wt% of gross weight, and this blue pigment accounts for 10 to 25 wt% of gross weight.
11. colored filter substrate according to claim 8, it is characterized in that: wherein this inorganic pigment is selected from by titanium dioxide, barium sulphate, calcium carbonate, zinc white, lead sulfate, the group that black, synthetic iron black, carbon black of lead and yellow-collation, zinc yellow, colcother, cadmium red, ultramarine blue, Prussian blue, chrome oxide green, cobalt green, ocher, titanium and composition thereof consists of.
12. an embedded optical touch display panel is characterized in that comprising:
Each described this colored filter substrate in the request item 1 to 11;
One drives substrate, is parallel to this colored filter substrate, and wherein this drivings substrate comprises a plurality of touch-control sensing assemblies and distinguishes paired to those touch-control sensing districts that should colored filter substrate; And
One display medium, be located in this colored filter substrate and this driving substrate between.
13. the infrared light penetrable material for the infrared light filter layer of the colored filter substrate of embedded optical touch display panel is characterized in that comprising:
Light curable material;
The light initiator; And
A plurality of pigment account for gross weight 40 to 80 wt%,
Wherein the penetrability of this infrared light penetrable material in infrared light wavelength scope is greater than the penetrability in visible wavelength range.
14. infrared light penetrable material according to claim 13 is characterized in that: wherein this light curable material accounts for gross weight 10 to 30wt%.
15. infrared light penetrable material according to claim 13 is characterized in that: wherein those pigment are to be selected from the group that is made of organic pigment, inorganic pigment and composition thereof.
16. infrared light penetrable material according to claim 15 is characterized in that: wherein this organic pigment is selected from the group that is made of red pigment, yellow uitramarine, viridine green, blue pigment, violet pigment and composition thereof.
17. infrared light penetrable material according to claim 15, it is characterized in that: wherein this organic pigment comprises red pigment, viridine green and blue pigment, this red pigment accounts for 25 to 40 wt% of gross weight, this viridine green accounts for 5 to 15 wt% of gross weight, and this blue pigment accounts for 10 to 25 wt% of gross weight.
18. infrared light penetrable material according to claim 15, it is characterized in that: wherein this inorganic pigment is selected from by titanium dioxide, barium sulphate, calcium carbonate, zinc white, lead sulfate, the group that black, synthetic iron black, carbon black of lead and yellow-collation, zinc yellow, colcother, cadmium red, ultramarine blue, Prussian blue, chrome oxide green, cobalt green, ocher, titanium and composition thereof consists of.
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| CN201210550988XA CN103033980A (en) | 2012-12-18 | 2012-12-18 | Optical filter base plate and material embedded with optical type touch control panel and infrared filter layer |
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| WO2019024574A1 (en) * | 2017-08-03 | 2019-02-07 | 京东方科技集团股份有限公司 | Colour film substrate, display panel, backlight module, display device and display system |
| CN111522186A (en) * | 2019-02-01 | 2020-08-11 | 光芒光学股份有限公司 | Lens barrel |
| CN112034650A (en) * | 2020-09-23 | 2020-12-04 | 京东方科技集团股份有限公司 | Color film substrate, display panel and display device |
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Application publication date: 20130410 |