CN105093648B - The preparation method of color membrane substrates - Google Patents
The preparation method of color membrane substrates Download PDFInfo
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- CN105093648B CN105093648B CN201510496215.1A CN201510496215A CN105093648B CN 105093648 B CN105093648 B CN 105093648B CN 201510496215 A CN201510496215 A CN 201510496215A CN 105093648 B CN105093648 B CN 105093648B
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- prism
- prism film
- black matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a kind of preparation method of color membrane substrates, is included in and multiple black matrix spaced apart are formed on substrate, and each black matrix includes convex portion and positioned at the flat part of convex portion both sides；Prism film is respectively formed between the convex portion of two neighboring black matrix so that light can increase the shooting angle of light after prism film.Cooperation of the invention by black matrix and the structure of prism film, using optical lens principle, the visual angle of color membrane substrates is effectively improved, while improves the light leakage phenomena of color membrane substrates, greatly increased the utilization rate of light and light projects the brightness of color membrane substrates.
Description
Technical field
The invention belongs to technical field of liquid crystal display, and in particular to a kind of preparation method of color membrane substrates.
Background technology
RGBW technologies have been widely used in field of liquid crystal display at present.But in existing color membrane substrates and it is not provided with phase
The structure of pass makes it have higher rising angle, and light directly projects liquid crystal display, its angle of emergence after color membrane substrates
Degree is not improved.Therefore, the difficult point of RGBW technologies is largely how preferably to improve visual angle at present.In addition,
Light is reached at color membrane substrates after liquid crystal deflection, because the edge liquid crystal of the color membrane substrates swings to disorder, it is easy to cause
The polarization direction of light changes herein, therefore light is easy to the joining place leakage of the black matrix and color blocking on color membrane substrates
Go out, so as to influence the display effect of liquid crystal display.
The problem of for above-mentioned technology existing, wish to seek a kind of preparation method of color membrane substrates in the art, making should
The color membrane substrates produced with this method have high visual angle, to solve weak point of the prior art.
The content of the invention
In order to further improve the visual angle that light projects color membrane substrates, the invention provides a kind of making side of color membrane substrates
Method.
According to a kind of preparation method of color membrane substrates provided by the invention, be included in formed on substrate it is multiple spaced apart black
Matrix, each black matrix include convex portion and positioned at the flat parts of convex portion both sides；It is respectively formed between the convex portion of two neighboring black matrix
Prism film is so that light can increase the shooting angle of light after prism film.
In the preparation method of the color membrane substrates of the present invention, black matrix is designed with convex portion and flat part first
" convex " shape, the structure of prism film is then formed between the convex portion of adjacent black matrix, pass through matching somebody with somebody for black matrix and prism film
Light is set to increase the shooting angle of light when passing through prism film in terms of unification, another aspect prism film is covered in the flat of black matrix
Portion can make the propagation path of light in this place change, so as to improve in the prior art black matrix edge due to liquid crystal swing to it is disorderly
Light leakage phenomena caused by unrest.The present invention is by the cooperation of black matrix and the structure of prism film, using optical lens principle, effectively
Ground improves the visual angle of color membrane substrates, while improves the light leakage phenomena of color membrane substrates, greatly increase light utilization rate and
Light projects the brightness of color membrane substrates.
In some embodiments, the preparation method of prism film comprises the following steps：
Prism membrane material is coated with after each black matrix is formed, the prism membrane material of coating is concordant with the top of the convex portion；
The coating photoresist layer on prism membrane material；
Light source is exposed by light shield to photoresist layer to form the mask pattern of prism film on photoresist layer；
Prism membrane material is etched so that mask using the method for ion beam milling, while by reference of mask pattern
Figure is formed on prism membrane material；
The photoresist on prism membrane material is removed so as to obtain prism film.
In this scenario, prism membrane material is coated with first, and prism membrane material is preferably flexible mylar；Secondly, coating
Photoresist layer, photoresist layer preferably use positivity photoresist；Then photoresist layer is entered by light shield using ultraviolet source
Row irradiation, the light shield form the pattern of the structure of prism film using grayscale mask technology on its substrate, and light, should after light shield
Pattern is exposed on photoresist layer, so as to form latticed mask pattern, then thermally treated (temperature on photoresist layer
About 160 DEG C) process, the outline of mask pattern is solidification, so as to form firm latticed mask pattern；Then, lead to
The energy for crossing control ion beam controls the depth of etching, so as to form the structure of required prism film on prism membrane material；
Finally, the making of prism film can be completed by removing photoresist using corresponding acidic liquid.
In some embodiments, each prism film includes at least partly curved lenses film of covering flat part and positioned at adjacent
Triangular prism film between two curved lenses films.Curved lenses film and triangular prism film can pass light through light when at this
Reflect, i.e., light is restrained or is dissipated in this place by setting the structure of suitable curved lenses film and triangular prism film,
So as to reduce or improve the visual angle of color membrane substrates.
In some embodiments, flat part is completely covered in curved lenses film.Black matrix is completely covered in curved lenses film
Flat part, when light injects the edge of flat part through curved lenses film, deviation occurs for light, so that light is completely flat
Portion is blocked, and considerably reduces the light leakage phenomena at flat part.
In some embodiments, the cross sectional shape of triangular prism film is isosceles triangle.Light is made by this set
Deviation angle at the triangular prism film is consistent, so that when light passes through triangular prism film evenly.Preferably, the isosceles three
Angular corner angle is 50 degree to 60 degree.
In some embodiments, the outer rim of prism film and the top of convex portion are concordant.On the one hand the setting is easy to subsequently exist
Corresponding color blocking is continuously formed on prism film, on the other hand the thickness of color blocking and the ratio of the thickness of prism film by combining to form
Example, the mixed light phenomenon formed after light can be reduced when by corresponding color blocking, so as to which the image color avoided the formation of is uneven.
In some embodiments, the color that respective color is formed on each prism film is also included after each prism film is formed
Resistance.The color blocking is used to realize that the pictures of color membrane substrates is shown, by adjust the ratio of the thickness of color blocking and the thickness of prism film come
The effect of specific allotment light extraction.
In some embodiments, the refractive index of color blocking, the refractive index of the prism film corresponding with color blocking and air
Refractive index is sequentially reduced.This set makes light gradually be dissipated on the direction of propagation along color blocking to prism film, so that light projects
With bigger shooting angle during color membrane substrates.
In some embodiments, the preparation method of black matrix includes：
Black matrix material layer is coated on substrate；
Photoresist layer is coated in black matrix material layer；
Photoresist layer is exposed and developed using half-exposure technology；
Continue to be etched photoresist layer to obtain black matrix.
Photoresist layer in the program can use positivity photoresistance, using half-exposure technology, the positivity photoresistance of full transmission region
Do not react with light, all leave；The positivity photoresistance in semi-transparent region reacts with light part, leaves a part, not thoroughly
The positivity photoresistance in light region all reacts disappearance with light；Black matrix convex portion and flat part are controlled by controlling light exposure
Thickness.
Compared with prior art, the present invention has advantages below：
1) in the preparation method of the color membrane substrates of the present invention, light is made to pass through prism by the cooperation of black matrix and prism film
The shooting angle of light can be increased during film, so as to improve the visual angle of color membrane substrates；
2) prism film, which is covered in the flat part of black matrix, can make the propagation path of light in this place change, existing so as to improve
There is black matrix edge light leakage phenomena caused by liquid crystal swings to disorder in technology；
3) because the cooperation of the black matrix and prism film makes black matrix have more preferable shaded effect, therefore greatly improve
The utilization rate and light of backlight project the brightness of color membrane substrates.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 is the flow chart according to the preparation method of the color membrane substrates of the present invention；
Fig. 2 is the flow chart according to the preparation method of the prism film of the color membrane substrates of the present invention；
Fig. 3 is the structural representation of black matrix；
Fig. 4 is the schematic diagram that prism membrane layers are formed in the black matrix shown in Fig. 3；
Fig. 5 is the schematic diagram that photoresist layer is formed in the prism membrane layers shown in Fig. 4；
Fig. 6 is the schematic diagram for the mask pattern for the photoresist layer shown in Fig. 5 being exposed and being developed to prism film；
Fig. 7 is the structural representation for the prism film to be formed；
Fig. 8 is the schematic diagram that corresponding color blocking is formed on the prism film shown in Fig. 7；
Fig. 9 is the flow chart of the preparation method of black matrix；
Figure 10 is the schematic diagram of the preparation method of black matrix；
Figure 11 is the fundamental diagram of arc prism film；
Figure 12 is the fundamental diagram of triangular prism film.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not drawn according to the ratio of reality.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Details described here is exemplary, and is only used for that embodiments of the invention are illustratively discussed, it
Presence be to provide for be considered as to the present invention principle and concept in terms of most useful and most intelligible description.Close
In this point, it is not attempted to exceed the CONSTRUCTED SPECIFICATION of the present invention Jie of basic comprehension required degree of the invention here
Continue, those skilled in the art is clearly understood that how to be practically carrying out the several of the present invention by specification and its accompanying drawing
Kind form.
Fig. 1 shows the flow chart of the preparation method according to color membrane substrates 100 provided by the invention.With reference to Fig. 1 to Fig. 7 institutes
Show, the preparation method of color membrane substrates 100 includes：
Step S100：As shown in figure 3, forming multiple black matrix 20 spaced apart on the substrate 10, each black matrix 20 includes
Convex portion 21 and positioned at the flat part 22 of the both sides of convex portion 21；
Step S200：As shown in figure 8, prism film 30 is respectively formed so that light between the convex portion 21 of two neighboring black matrix 20
The shooting angle of light can be increased after prism film 30.
In the preparation method of the color membrane substrates 100 of the present invention, black matrix 20 is designed with the peace of convex portion 21 first
" convex " shape in smooth portion 22, the structure of prism film 30 is then formed between the convex portion 21 of adjacent black matrix 20, passes through black square
Battle array 20 coordinates the shooting angle on the one hand enabling light to increase light when passing through prism film 30, another aspect prism with prism film 30
The flat part 22 that film 30 is covered in black matrix 20 can make the propagation path of light in this place change, so as to improve in the prior art
Black matrix edge light leakage phenomena caused by liquid crystal swings to disorder.The present invention passes through black matrix 20 and the knot of prism film 30
The cooperation of structure, using optical lens principle, the visual angle of color membrane substrates 100 is effectively improved, while improves color membrane substrates 100
Light leakage phenomena, greatly increase light utilization rate and light project color membrane substrates 100 brightness.
Fig. 2 shows the Making programme figure of the prism film 30 of the color membrane substrates 100 according to the present invention.With reference to Fig. 2 to Fig. 7 institutes
Show, the preparation method of prism film 30 comprises the following steps：
Step S201：As shown in figure 4, prism membrane material 40, the prism membrane material of coating are coated with after each black matrix 20 is formed
Material 40 is concordant with the top of convex portion 21；
Step S202：As shown in figure 5, the coating photoresist layer 50 on prism membrane material 40；
Step S203：As shown in fig. 6, light source 70 is exposed with photoresist layer 50 by light shield A to photoresist layer 50
The upper mask pattern 51 for forming prism film 30；
Step S204：As shown in fig. 7, it is with reference to prism using the method for ion beam milling, while with mask pattern 51
Membrane material 40 is etched so that mask pattern 51 is formed on prism membrane material 40；
Step S205：The photoresist on prism membrane material is removed so as to obtain prism film 30.
In this scenario, prism membrane material 40 is coated with first, and prism membrane material 40 is preferably flexible mylar；Secondly,
Coating photoresist layer 50, photoresist layer 50 preferably use positivity photoresist；Then A pairs of light shield is passed through using ultraviolet source 70
Photoresist layer 50 is irradiated, and light shield A forms the pattern of the structure of prism film 30 using grayscale mask technology on its substrate,
After light shield A, the pattern is exposed on photoresist layer 50 light, so as to form latticed mask on photoresist layer 50
Figure 51, then thermally treated (temperature is about 160 DEG C) process, the outline of mask pattern 51 is solidification, it is firm so as to be formed
Latticed mask pattern；Then, the depth of etching is controlled by controlling the energy of ion beam, so as in prism membrane material 40
The structure of prism film 30 needed for upper formation；Finally, prism film 30 can be completed by removing photoresist using corresponding acidic liquid
Making.
According to the present invention, as shown in fig. 7, each prism film 30 includes the curved lenses film 31 at least partly covering flat part 22
And the triangular prism film 32 between two neighboring curved lenses film 31.Curved lenses film 31 and triangular prism film 32 can make
Light when light is by this reflects, i.e., by the structure of suitable curved lenses film 31 and triangular prism film 32 is set come
Light is set to restrain or dissipate in this place, so as to reduce or improve the visual angle of color membrane substrates 100.
Preferably, in embodiment as shown in Figure 7, flat part 22 is completely covered in curved lenses film 31.Curved lenses film 31
The flat part 22 of black matrix 20 is completely covered.With reference to shown in Figure 11, when being not provided with curved lenses 31 at flat part 22, light a
Human eye is injected along light a ' direction, therefore light leakage phenomena occurs in the edge of flat part 22；And set at flat part 22
During curved lenses 31, when light a injects the edge of flat part 22 through curved lenses film 31, light a occurs deviation and forms light a ",
So that light a is blocked by flat part 22 completely, the light leakage phenomena at flat part 22 is considerably reduced.
It is further preferred that in embodiment as shown in figure 12, the cross sectional shape of triangular prism film 32 is isosceles triangle.Pass through
This set makes deviation angles of the light b at the triangular prism film 32 consistent, so that when light b passes through triangular prism film 32
Evenly.Preferably, the corner angle of the isosceles triangle is 50 degree to 60 degree.
Fig. 7 is returned to, the outer rim of prism film 30 is concordant with the top of convex portion 21.On the one hand the setting is easy to subsequently in prism film
Corresponding color blocking 80 is continuously formed on 30, on the other hand by the thickness and the thickness of prism film 30 of the color blocking 80 combined to form
Ratio, the mixed light phenomenon formed after light can be reduced when by corresponding color blocking 80, so as to which the image color avoided the formation of is uneven.
According to the present invention, in embodiment as shown in Figure 8, also include after each prism film 30 is formed on each prism film 30
Form the color blocking 80 of respective color.The color blocking 80 is used to realize that the picture of color membrane substrates 100 is shown, by the thickness for adjusting color blocking 80
The ratio of degree and the thickness of prism film 30 carrys out the specific effect for allocating light extraction.
Preferably, the refractive index of color blocking 80, the refractive index of prism film 30 corresponding with color blocking 80 and the refraction of air
Rate is sequentially reduced.This set makes light gradually be dissipated along color blocking 80 to the direction of propagation of prism film 30, so that light projects
With bigger shooting angle during color membrane substrates 100.
According to the present invention, Fig. 9 shows the flow of the preparation method of the black matrix 20 of the color membrane substrates 100 according to the present invention
Figure.With reference to shown in Figure 10, the preparation method of the black matrix 20 comprises the following steps：
Step S101：Black matrix material layer 60 is coated on the substrate 10；
Step S102：Photoresist layer 70 is coated in black matrix material layer 60；
Step S103：Photoresist layer 70 is exposed and developed using half-exposure technology；
Step S104：Continue to be etched photoresist layer to obtain black matrix 20.
Photoresist layer 70 in the program can use positivity photoresistance, using half-exposure technology, using light shield B to photoresist layer
70 are exposed, and light shield B full transmission region B1 positivity photoresistance does not react with light, all leaves；Semi-transparent region B2
Positivity photoresistance reacted with light part, leave a part, non-transmission region B3 positivity photoresistance all reacts with light
Disappear；The thickness of the convex portion 21 of black matrix 20 and flat part 22 is controlled by controlling light exposure.
It should be noted that foregoing example is only for the purpose of explanation, and it is not construed as limiting the present invention.Although
According to exemplary embodiment, invention has been described, it being understood, however, that used herein is descriptive and explanation
The language of property, rather than restricted language.In presently described and modification scope of the following claims, do not departing from
In the scope of scope and spirit of the present invention, the present invention can be changed.Although here according to specific mode, material
Invention has been described with embodiment for material, but the present invention is not limited in details disclosed herein；On the contrary, the present invention can expand
Open up structure, the methods and applications of all identical functions for example within the scope of the appended claims.
Claims (9)
1. a kind of preparation method of color membrane substrates, including：
Multiple black matrix spaced apart are formed on substrate, each black matrix includes convex portion and positioned at the flat of the convex portion both sides
Smooth portion；
Prism film is respectively formed between the convex portion of the two neighboring black matrix so that light can increase after the prism film
The shooting angle of light, and each prism film includes at least partly covering the curved lenses film of the flat part and positioned at adjacent
Triangular prism film between two curved lenses films.
2. the preparation method of color membrane substrates according to claim 1, it is characterised in that the preparation method bag of the prism film
Include following steps：
Prism membrane material, the prism membrane material of coating and the top flat of the convex portion are coated with after each black matrix is formed
Together；
The coating photoresist layer on the prism membrane material；
Light source is exposed to form the mask of the prism film on the photoresist layer by light shield to the photoresist layer
Figure；
Using the method for ion beam milling, at the same using the mask pattern as with reference to being etched to the prism membrane material so that
The mask pattern is formed on the prism membrane material；
The photoresist on the prism membrane material is removed so as to obtain the prism film.
3. the preparation method of color membrane substrates according to claim 1, it is characterised in that the curved lenses film is completely covered
The flat part.
4. the preparation method of color membrane substrates according to claim 1, it is characterised in that the section shape of the triangular prism film
Shape is isosceles triangle.
5. the preparation method of color membrane substrates according to claim 1 or 2, it is characterised in that the outer rim of the prism film with
The top of the convex portion is concordant.
6. the preparation method of color membrane substrates according to claim 1 or 2, it is characterised in that the prism film is by flexibility
Polyester film is formed.
7. the preparation method of color membrane substrates according to claim 1 or 2, it is characterised in that forming each prism film
Also include the color blocking that respective color is formed on each prism film afterwards.
8. the preparation method of color membrane substrates according to claim 7, it is characterised in that the refractive index of the color blocking and institute
State the refractive index of the corresponding prism film of color blocking and the refractive index of air is sequentially reduced.
9. the preparation method of color membrane substrates according to claim 1 or 2, it is characterised in that the making side of the black matrix
Method includes：
Black matrix material layer is coated on substrate；
Photoresist layer is coated in the black matrix material layer；
The photoresist layer is exposed and developed using half-exposure technology；
Continue to be etched photoresist layer to obtain the black matrix.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106501988B (en) * | 2016-10-31 | 2019-10-25 | 深圳市华星光电技术有限公司 | CF substrate and preparation method thereof and liquid crystal display panel |
| CN108196390B (en) * | 2018-01-02 | 2021-10-15 | 京东方科技集团股份有限公司 | Color film substrate and display device |
| CN108563014A (en) * | 2018-01-10 | 2018-09-21 | 京东方科技集团股份有限公司 | Color membrane substrates and preparation method thereof and display device |
| CN110095834A (en) * | 2018-01-31 | 2019-08-06 | 京东方科技集团股份有限公司 | Backlight, backlight source preparation method and display device |
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