CN102879948B - Color membrane substrates, liquid crystal indicator and method for making - Google Patents
Color membrane substrates, liquid crystal indicator and method for making Download PDFInfo
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- CN102879948B CN102879948B CN201210380262.6A CN201210380262A CN102879948B CN 102879948 B CN102879948 B CN 102879948B CN 201210380262 A CN201210380262 A CN 201210380262A CN 102879948 B CN102879948 B CN 102879948B
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Abstract
The embodiment of the invention discloses a kind of color membrane substrates, liquid crystal indicator and method for making, relate to field of liquid crystal, effectively can reduce the reflectivity of the light through color membrane substrates, improve the transmissivity of liquid crystal indicator.The color membrane substrates of the embodiment of the present invention, comprise: substrate, be successively set on black Matrix Pattern on the first surface of described substrate and color filter film, the second surface be oppositely arranged with the first surface of described substrate is provided with anti-reflection film, described anti-reflection film is coated with ITO layer, and the refractive index of described anti-reflection film is greater than the refractive index of described substrate and is less than the refractive index of described ITO.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly relate to a kind of color membrane substrates, liquid crystal indicator and method for making.
Background technology
In recent years, increasingly mature along with photoelectric display technology, the application of liquid crystal indicator is more and more extensive.Because of its have that the life-span is long, light efficiency is high, radiation is low, the feature such as low in energy consumption, liquid crystal indicator instead of traditional radiographic tube display apparatus gradually and forms research direction in order to display device product main flow in recent years.
Be currently suggested a kind of new liquid crystal indicator display mode: FFS (Fringe FieldSwitching, fringing field switches) pattern.This pattern can improve the problem of IPS (In-Plane Switching switches in face) the low aperture that pattern exists and transmissivity.The principal character of FFS mode is ITO (Indium Tin Oxide, indium tin metal oxide) be deposited upon the back side of substrate, and be used as electrode unlike ITO layer being deposited in traditional handicraft CF (Color Flitter, color filter film) side.Therefore, the ITO layer in the liquid crystal indicator of FFS mode plays shielding external electrical field, prevents the inner liquid crystal device of electrostatic breakdown and the effect affecting liquid crystal deflecting element.
But inventor finds that in R&D process prior art at least exists following defect: when light is entered by color filter film side, when substrate is irradiated to ITO layer, because the refractive index of the refractive index ratio substrate of ITO layer is high, light enters optically denser medium from optically thinner medium can there is half-wave loss phenomenon at two dielectric surfaces, therefore can reduce the optical transmittance of color membrane substrates.
Summary of the invention
Embodiments of the invention technical matters to be solved is to provide a kind of color membrane substrates, liquid crystal indicator and method for making, redistributes the energy of reflected light and the energy of transmitted light, improves the transmissivity of liquid crystal indicator.
For solving the problems of the technologies described above, embodiments of the invention adopt following technical scheme:
The invention provides a kind of color membrane substrates, comprise: substrate, be successively set on black Matrix Pattern on the first surface of described substrate and color filter film, the second surface be oppositely arranged with the first surface of described substrate is provided with anti-reflection film, described anti-reflection film is coated with indium tin metal oxide ITO layer, the refractive index of described anti-reflection film is greater than the refractive index of described substrate and is less than the refractive index of described ITO.
Further, the figure of described anti-reflection film is consistent with the figure of described color filter film.
Further, the thickness of described anti-reflection film is d, wherein
k is natural number, and λ is the wavelength of required anti-reflection light.
On the other hand, the present invention also provides a kind of liquid crystal indicator, comprises color membrane substrates as above.
Again on the one hand, the present invention also provides a kind of method for making of color membrane substrates, comprising: the figure forming anti-reflection film on the second surface of substrate;
Described anti-reflection film forms ITO layer;
The first surface of described substrate is formed black Matrix Pattern;
Described black Matrix Pattern forms color filter film.
Further, the figure of described anti-reflection film is consistent with the figure of described color filter film.
Further, the thickness of described anti-reflection film is d, wherein
k is natural number, and λ is the wavelength of required anti-reflection light.
A kind of color membrane substrates of the embodiment of the present invention, liquid crystal indicator and method for making, by arranging anti-reflection film between substrate and ITO layer, and the refractive index of anti-reflection film is greater than the refractive index of substrate and is less than the refractive index of ITO layer, the energy that can increase transmitted light reduces energy of reflection light, more light effectively can be gone out in transmission, improve the transmissivity of liquid crystal indicator light.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of color membrane substrates in the embodiment of the present invention;
Fig. 2 is that the embodiment of the present invention is prized the schematic flow sheet of film method for preparing substrate.
Description of reference numerals: 1, substrate; 2, color filter film; 3, anti-reflection film; 4, ITO layer; 5, black matrix; 21, red filter film; 22, green filter film; 23, blue filter film; 31, red anti-reflection film; 32, green anti-reflection film; 33, blue anti-reflection film.
Embodiment
The embodiment of the present invention provides a kind of color membrane substrates, liquid crystal indicator and method for making, can reduce the reflectivity of color membrane substrates light, improves the transmissivity of liquid crystal indicator.
In below describing, in order to illustrate instead of in order to limit, propose the detail of such as particular system structure, interface, technology and so on, understand the present invention thoroughly to cut.But, it will be clear to one skilled in the art that and also can realize the present invention in other embodiment not having these details.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders description of the invention.
Below in conjunction with following accompanying drawing, the embodiment of the present invention is described in detail.
The present embodiment provides a kind of color membrane substrates, as Fig. 1, comprise: substrate 1, be successively set on black matrix 5 figure on the first surface of substrate 1 and color filter film 2, the second surface be oppositely arranged with the first surface of substrate 1 is provided with anti-reflection film 3, anti-reflection film 3 is coated with ITO layer 4, the refractive index of anti-reflection film 3 is greater than the refractive index of substrate 1 and is less than the refractive index of ITO layer 4.
It should be noted that, the substrate in the present invention comprises first surface and second surface, and first surface and second surface are oppositely arranged, and first surface is the surface of real estate to liquid crystal layer, and second surface is the surface of substrate liquid crystal layer dorsad.
The color membrane substrates of the present embodiment is mainly for the liquid crystal indicator using fringe field switching mode.According to the feature of fringe field switching mode, the side of the color filter film dorsad of the ITO layer deposition substrate in the liquid crystal indicator of this pattern, is used for shielding external electrical field, prevents electrostatic on the impact of liquid crystal indicator.But because the refractive index of the refractive index ratio substrate of ITO layer wants large, when light enters ITO layer by color filter film side through substrate, understand the two dielectric surface generation half-wave loss phenomenons in ITO layer and substrate.Therefore, when arranging anti-reflection film between substrate and ITO layer, anti-reflection film can reduce the energy of the energy increase transmitted light of reflected light, improves the transmissivity of the light of color membrane substrates.
Energy of reflection light and transmitted light energy are embodied by reflectivity.Reflectivity refers to and projects body surface by the radiation energy that reflects and the ratio of integrated radiant emittance projecting body surface.Wherein, when light beam is close to normal incidence (namely the incident angle of light approximates 0), reflectivity meets following formula: R=(n
2-n
1) square/(n
2+ n
1) square, n
1, n
2represent the refractive index of the two media material that light continues through respectively, transmissivity=1-reflectivity.As a kind of embodiment of the present invention, suppose that the refractive index of substrate is n
1, the refractive index of ITO layer is n
2, the refractive index of anti-reflection film is n.In order to the energy reducing reflected light increases the energy of transmitted light, improve the transmissivity of light, the refractive index n calculating anti-reflection film will meet n
1< n < n
2(n
1< n
2, the refractive index of substrate is less than the refractive index of ITO layer).As a preferred embodiment of the present invention, when the refractive index n of anti-reflection film meets
time, the transmissivity now calculated can reach 100%, and namely light reflects, and all there occurs transmission.
The color membrane substrates of the embodiment of the present invention, by arranging anti-reflection film between substrate and ITO layer, and the refractive index of anti-reflection film is greater than the refractive index of substrate and is less than the refractive index of ITO layer, the energy that can increase transmitted light reduces energy of reflection light, more light effectively can be gone out in transmission, improve the transmissivity of light.
Further, the figure of anti-reflection film and the figure of color filter film consistent.Color filter film is a kind of optical lightscreening structure of apparent color, and it accurately can select the light wave of wave band among a small circle for passing through, and reflect or sponge the light wave that other do not wish the wave band passed through, usual color filter film comprises Red Green Blue filter coating.Black matrix role is to provide the alignment mark of color filter film and prevents light leak.Therefore, ensure that actually transmitted light all obtains anti-reflection, the figure of anti-reflection film is consistent with the figure of color filter film.Certainly, the figure of anti-reflection film can have other shape, the figure of such as anti-reflection film is larger than the figure of color filter film, but redundance is occupied by black Matrix Pattern, can't have an impact to liquid crystal display, therefore the figure of anti-reflection film and the figure of color filter film consistent time be optimum selection.
Further, the thickness of anti-reflection film is d, wherein
k is natural number, and λ is the wavelength of required anti-reflection light.As shown in Figure 1, color filter film 2 comprises red filter film 21, green filter film 22, blue filter film 23, and the light color that the filter coating of different colours obtains is also different.For making each filter coating gained light all obtain best antireflective effect, anti-reflection film 3 also correspondence arranges red anti-reflection film 31, green anti-reflection film 32, blue anti-reflection film 33.According to the feature of light wave-particle duality, when the thickness d of anti-reflection film meets
time, the anti-reflection film of thickness d can produce best antireflective effect to the light of wavelength X.As a kind of embodiment of the present invention, suppose that the red light wavelength that red filter film 21 obtains is λ
1, wherein λ
1=610nm, therefore calculates selectable red anti-reflection film thickness d
1=152nm.Same, the optical wavelength that green anti-reflection film 22 obtains is λ
2, wherein λ
2=550nm, therefore selectable green anti-reflection film thickness d
2=137nm; The optical wavelength that blue anti-reflection film 23 obtains is λ
3, wherein λ
3=460nm, therefore selectable blue anti-reflection film thickness d
3=115nm.Those skilled in the art are known, and this part is only analysis to embodiment and explanation, is not limitation of the invention further.
The color membrane substrates of the embodiment of the present invention, by arranging anti-reflection film between substrate and ITO layer, and the refractive index of anti-reflection film is greater than the refractive index of substrate and is less than the refractive index of ITO layer, the energy that can increase transmitted light reduces energy of reflection light, make more light can effectively transmission, improve the transmissivity of liquid crystal indicator light.
In addition, the present invention also provides a kind of method for making of color membrane substrates, as shown in Figure 2, comprising:
S1: the figure forming anti-reflection film on the second surface of substrate;
Concrete, first between the second surface of substrate and evaporation target or sputtering target material, arrange aluminum mask plate, through the figure of the vacancy determination anti-reflection film on mask plate, the spacing between mask plate two adjacent vacant lacks is set to the width of two sub-pixs.Then carry out three translation depositing operations, the second surface of substrate is formed red anti-reflection film figure, green anti-reflection film figure and blue anti-reflection film figure respectively.
Further, the figure of anti-reflection film is consistent with the gap area between black Matrix Pattern.
Further, the thickness of anti-reflection film is d, wherein
k is natural number, and λ is the wavelength of required anti-reflection light.For reaching best antireflective effect, the filter coating for different colours will design the anti-reflection film of different-thickness, and the thickness of anti-reflection film is controlled by the sedimentation time adjusting depositing operation.
S2: form ITO layer on anti-reflection film;
Concrete, the second substrate surface completing S1 uses magnetron sputtering or gas-phase deposition deposition form one deck ITO layer, make it the effect playing shielding external electrical field.
S3: form black Matrix Pattern on the first surface of substrate;
Concrete, complete the first surface of substrate of S2, first apply black matrix material, the mode of coating can use the method for printing and dyeing or deposition.Then remove unwanted black matrix part by etching technics, and the black matrix remained is cured and drying, the final black Matrix Pattern forming grid arrangement.
S4: form color filter film on black Matrix Pattern;
Concrete, completing the first surface of substrate of S3, by dispersion method coating pigment, glue spreader is utilized pigment and resin to be coated in uniformly on substrate first surface, then by pigment drying and forming-film, recycling photoetching process makes dot pattern, finally forms the color filter film of arrayed.
In the embodiment of the present invention, the specific implementation of each step, especially wherein about the formation mode of black Matrix Pattern and the description of color filter film, is only exemplary illustration, not limitation of the present invention.
The method for making of the color membrane substrates of the embodiment of the present invention, by arranging anti-reflection film between substrate and ITO layer, and the refractive index of anti-reflection film is greater than the refractive index of substrate and is less than the refractive index of ITO layer, the energy that can increase transmitted light reduces energy of reflection light, more light effectively can be gone out in transmission, improve the transmissivity of liquid crystal indicator.
In addition, the embodiment of the present invention also provides a kind of liquid crystal indicator, comprises color membrane substrates as above.Described liquid crystal indicator can be: any product or parts with Presentation Function such as mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.Wherein, the structure of color membrane substrates and the same above-described embodiment of principle of work, do not repeat them here.In addition, the structure of other parts of liquid crystal indicator with reference to prior art, can be not described in detail this herein.
The liquid crystal indicator of the embodiment of the present invention, the energy that can increase transmitted light reduces energy of reflection light, and more light can effectively be gone out in transmission, improves the light transmission of liquid crystal indicator.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (5)
1. a color membrane substrates, comprise: substrate, be successively set on black Matrix Pattern on the first surface of described substrate and color filter film, it is characterized in that, the second surface be oppositely arranged with the first surface of described substrate is provided with anti-reflection film, described anti-reflection film is coated with indium tin metal oxide ITO layer, the refractive index of described anti-reflection film is greater than the refractive index of described substrate and is less than the refractive index of described ITO;
The figure of described anti-reflection film is consistent with the figure of described color filter film.
2. color membrane substrates according to claim 1, is characterized in that, the thickness of described anti-reflection film is d, wherein
k is natural number, and λ is the wavelength of required anti-reflection light.
3. a liquid crystal indicator, is characterized in that, comprises the color membrane substrates described in any one of claim 1-2.
4. a method for making for color membrane substrates, is characterized in that, comprising:
The second surface of substrate is formed the figure of anti-reflection film;
Described anti-reflection film forms ITO layer;
The first surface of described substrate is formed black Matrix Pattern;
Described black Matrix Pattern forms color filter film;
The figure of described anti-reflection film is consistent with the figure of described color filter film.
5. the method for making of color membrane substrates according to claim 4, is characterized in that, the thickness of described anti-reflection film is d, wherein
k is natural number, and λ is the wavelength of required anti-reflection light.
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|---|---|---|---|
| CN201210380262.6A CN102879948B (en) | 2012-09-29 | 2012-09-29 | Color membrane substrates, liquid crystal indicator and method for making |
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|---|---|---|---|
| CN201210380262.6A CN102879948B (en) | 2012-09-29 | 2012-09-29 | Color membrane substrates, liquid crystal indicator and method for making |
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| CN102879948A CN102879948A (en) | 2013-01-16 |
| CN102879948B true CN102879948B (en) | 2015-10-21 |
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| CN103713420A (en) | 2013-12-30 | 2014-04-09 | 京东方科技集团股份有限公司 | Array substrate and display device |
| CN103926743A (en) * | 2014-03-24 | 2014-07-16 | 京东方科技集团股份有限公司 | Color film substrate, manufacturing method thereof, and display device |
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| CN104698521B (en) * | 2015-03-03 | 2017-05-10 | 昆山龙腾光电有限公司 | Color filter sheet, manufacturing method for color filter sheet and liquid crystal display device |
| CN105242450B (en) * | 2015-11-16 | 2019-02-12 | 信利半导体有限公司 | A kind of colour filtering chip basic board and its manufacturing method |
| CN105487280A (en) | 2016-01-20 | 2016-04-13 | 京东方科技集团股份有限公司 | Color film substrate and production method thereof |
| CN105589251B (en) * | 2016-02-29 | 2020-03-10 | 京东方科技集团股份有限公司 | Color film substrate, manufacturing method thereof and display device |
| JP6892248B2 (en) * | 2016-11-15 | 2021-06-23 | 三菱電機株式会社 | Liquid crystal display device |
| CN108427223B (en) * | 2018-03-23 | 2020-11-13 | 京东方科技集团股份有限公司 | Color film substrate, display panel and display method thereof |
| CN109656047B (en) * | 2018-12-11 | 2020-08-04 | 深圳市华星光电半导体显示技术有限公司 | Substrate and preparation method |
| CN111722429A (en) * | 2020-08-06 | 2020-09-29 | 业成光电(无锡)有限公司 | Touch control display device |
| CN114355663A (en) * | 2021-12-31 | 2022-04-15 | 惠科股份有限公司 | Color film substrate, display panel and display |
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