CN106483707A - Light filter for liquid crystal display and preparation method thereof and liquid crystal display - Google Patents
Light filter for liquid crystal display and preparation method thereof and liquid crystal display Download PDFInfo
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- CN106483707A CN106483707A CN201611255360.1A CN201611255360A CN106483707A CN 106483707 A CN106483707 A CN 106483707A CN 201611255360 A CN201611255360 A CN 201611255360A CN 106483707 A CN106483707 A CN 106483707A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000011159 matrix material Substances 0.000 claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims description 78
- 239000011347 resin Substances 0.000 claims description 29
- 229920005989 resin Polymers 0.000 claims description 29
- 239000012780 transparent material Substances 0.000 claims description 15
- 238000000151 deposition Methods 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 230000008021 deposition Effects 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 9
- 238000002834 transmittance Methods 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 238
- 239000000203 mixture Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
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- 238000005457 optimization Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
Classifications
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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
-
- 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
- G02F1/133514—Colour filters
-
- 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
- G02F1/133514—Colour filters
- G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
Abstract
The present invention relates to field of liquid crystal，Disclose a kind of light filter for liquid crystal display and preparation method thereof and liquid crystal display，This light filter includes thering is the first subpixel area、The substrate (50) of the second subpixel area and the 3rd subpixel area and the black matrix" (51) being located on this substrate，This black matrix" includes and described first subpixel area、Second subpixel area, first opening (510) corresponding with the 3rd subpixel area、Second opening (511) and the 3rd opening (512)，Light filter includes and described first opening、Second opening and corresponding the first colored sub-pixels layer (520) of the 3rd opening、Second colored sub-pixels layer (521) and the 3rd colored sub-pixels layer (522) and the white sub-pixels layer (523) being located at least one of above three colored sub-pixels layer.This light filter has good color blending effect and higher light transmittance, this light filter can be improved brightness and the resolution of liquid crystal display.
Description
Technical field
The present invention relates to field of liquid crystal, in particular it relates to a kind of light filter for liquid crystal display and its system
Preparation Method and liquid crystal display.
Background technology
Liquid crystal display (Liquid Crystal Display), is the display device of planar ultra-thin, it is by some
Colour or monochrome pixels composition, be positioned in front of light source or reflecting surface.Liquid crystal display power consumption is very low, therefore extremely engineering
Teacher's favor is it is adaptable to use the electronic equipment of battery.Its cardinal principle is to produce point, line, surface with galvanism liquid crystal molecule
Cooperation back fluorescent tube constitutes picture.
Colored filter (Color Filter) is a kind of optical filter of apparent color, and it can accurately select to be intended to lead to
The small range wave band light wave crossed, and reflect away the wave band that other are not intended to pass through.CF is the critical component of LCD colorization.LCD is
Non-active luminous assembly, the display of its color must enter through internal backlight module (penetrating type LCD) or the environment of outside
Penetrating light (reflection-type or semi penetration type LCD) provides light source, then arrange in pairs or groups driving IC (Drive IC) and liquid crystal (Liquid
Crystal) control formation GTG to show (Gray Scale), then pass through red (R) of colored filter, green (G), blue (B) is color
Chromatograph provides form and aspect (Chromacity), forms colored display picture.
The cross-sectional view of the LCD that Fig. 1 is provided by prior art.LCD includes the base with color filter film 110
Plate 11, array base palte 10 and be interposed in the liquid crystal layer 12 having between the substrate 11 of color filter film and array base palte 10, its
Middle colour color filter 110 is relative with liquid crystal layer 12.
As shown in Figure 2 a, in the color filter film of script, pixel corresponds to three sub-pixels, that is, one independent
Pixel corresponds to tri- sub-pixels of R, G, B.In order to lift the brightness of screen, the structure of the color filter film of script is done as Fig. 2 b
Shown in change, this technology is referred to as RGBW, that is, outside tri- sub-pixels of R, G, B, increases a display white (W)
Sub-pixel (this sub-pixel can be made of clear material), then two independent pixels share five sub-pixels, so, not only lifted
The brightness of screen, and because the quantity of sub-pixel under same resolution has been lacked much, therefore greatly reduce cost.
Fig. 3 shows the substrate 40 with color filter film being used for liquid crystal display in prior art, on this substrate
Color filter film 44 just employs RGBW technology.But due to tri- from R, G, B sub-pixels of W sub-pixel farther out, color blending effect is not
Good, and resolution is relatively low.It is formed with ito film layer 47 in the side deviating from color filter film 44 of substrate 40.
Fig. 4 a-4h shows the preparation method of the substrate with color filter film shown in Fig. 3, and the method generally comprises
Following steps：
In fig .4, light screening material is deposited on the substrate 40, and be patterned into black matrix" 41.Wherein, substrate 40 includes
Four subpixel area, are formed with first opening 420 corresponding with each subpixel area, the second opening in black matrix" 41
421st, the 3rd opening 422, the 4th opening 423.
In fig. 4b, red light-sensitive material 43 is deposited on the substrate 40 with black matrix" 41.
In Fig. 4 c, by red light-sensitive material 43 composition to form red sub-pixel layer 44a in the first opening 420.
In figure 4d, green photosensitive material is deposited on the substrate 40 with red sub-pixel layer 44a, and composition so that
Form green sub-pixels layer 44b in the second opening 421.The formation of wherein green sub-pixels layer 44b and red sub-pixel layer 44a
Method is identical.
In Fig. 4 e and 4f, by with form green sub-pixels layer 44b and red sub-pixel layer 44a identical method the
In three openings 422 and the 4th opening 423, corresponding formation blue subpixels layer 44c and white sub-pixels layer 44d, then, colored
Color filter 44 includes red sub-pixel layer 44a, green sub-pixels layer 44b, blue subpixels layer 44c and white sub-pixels layer 44d.
In figure 4g, levelling blanket 45 is formed on color filter film 44.
In Fig. 4 h, on levelling blanket 45, composition forms prismatic layer 46.
Content of the invention
It is an object of the invention to provide a kind of light filter for liquid crystal display, this light filter has good colour mixture effect
Fruit and higher light transmittance, in addition, this light filter can improve brightness and the resolution of liquid crystal display.
To achieve these goals, the present invention provides a kind of light filter for liquid crystal display it is characterised in that this filter
Color chips includes the substrate with the first subpixel area, the second subpixel area and the 3rd subpixel area and is located at described base
Black matrix" on plate, described black matrix" includes and described first subpixel area, described second subpixel area and described
The first corresponding opening of 3rd subpixel area, the second opening and the 3rd opening, described light filter also includes colour filter, described
Colour filter include with described first opening, described second opening and corresponding the first colored sub-pixels layer of described 3rd opening,
Second colored sub-pixels layer and the 3rd colored sub-pixels layer and be located at described first colored sub-pixels layer, the second colored sub-pixels
At least one of layer and the 3rd colored sub-pixels layer colored sub-pixels in the layer white sub-pixels layer.
Preferably, the thickness of described white sub-pixels layer is less than the thickness of described black matrix".
Preferably, the thickness of described white sub-pixels layer and the difference of the thickness of described black matrix" are not more than 0.2 μm；Described
The width of white sub-pixels layer is not more than the 2/3 of the width of corresponding colored sub-pixels layer.
Preferably, described white sub-pixels layer is arranged on the width of the opening corresponding to corresponding colored sub-pixels layer
Center, corresponding colored sub-pixels layer covers on described white sub-pixels layer and extends to the width of described opening
The both sides of the edge in degree direction.
Preferably, along the length direction of this corresponding colored sub-pixels layer at least one corresponding colored sub-pixels layer
It is arranged at intervals with multiple described white sub-pixels layers.
Preferably, between this light filter includes the flatness layer being formed on described colour filter and is located on described flatness layer
Interlayer.
Preferably, described wall is located at the top of the black matrix" between two adjacent colored sub-pixels layers.
Preferably, the thickness of described flatness layer is 0.5-4 μm；The thickness of described wall is 2-4 μm；Described flatness layer by
Transparent material is made；Described wall is made of clear material.
Preferably, described first colored sub-pixels layer, described second colored sub-pixels layer and described 3rd colored sub-pixels
Layer is formed by the preparation of red resin, green resin and blue resins respectively；Described white sub-pixels layer prepares shape by transparent material
Become；Described black matrix" is formed by light screening material preparation.
In technique scheme, by having in described first colored sub-pixels layer, the second colored sub-pixels layer and the 3rd
Described white sub-pixels layer is set at least one of sub-pixels layer colored sub-pixels layer so that this light filter has well
Color blending effect and higher light transmittance, when this light filter is applied in liquid crystal display, it is possible to increase liquid crystal
Show screen intensity and the resolution of device.
Another object of the present invention is to providing a kind of preparation method of the light filter for liquid crystal display, including following
Step：
S1, on the substrate with the first subpixel area, the second subpixel area and the 3rd subpixel area deposition the
One material forms black matrix", and so that described black matrix" is formed and described first subpixel area, described second sub-pixel area
Domain first opening corresponding with described 3rd subpixel area, the second opening and the 3rd opening；
S2, in described first opening, described second opening and described 3rd opening, depositing second material forms white picture
Plain layer；
S3, described white pixel layer formed after, in described first opening, described second opening and described 3rd opening
Middle deposition respectively the 3rd material, the 4th material and the 5th material, forming first respectively with the outside in described white pixel layer has
Sub-pixels layer, the second colored sub-pixels layer and the 3rd colored sub-pixels layer.
Preferably, the preparation method provided by the present invention for the light filter of liquid crystal display comprises the following steps：
S4, the described first colored sub-pixels layer that the 6th material is deposited on formation, described second colored sub-pixels layer and
To form flatness layer on described 3rd colored sub-pixels layer；
S5, on described flatness layer deposition the 7th material to form wall.
Preferably, described first material is light screening material；Described 3rd material, described 4th material and described 5th material
It is respectively red resin, green resin and blue resins；Described second material is transparent material；Described 6th material is transparent material
Material；Described 7th material is transparent material.
Preferably, in described step S2, the thickness of the described white pixel layer of formation of deposits is less than described black matrix"
Thickness.
Preferably, the thickness of described white sub-pixels layer and the difference of the thickness of described black matrix" are not more than 0.2 μm.
A further object of the present invention is to provide a kind of liquid crystal display, and this liquid crystal display includes provided by the present invention
The preparation method preparation of the light filter for liquid crystal display or the light filter for liquid crystal display provided by the present invention
The light filter obtaining, this liquid crystal display is also included the array base palte being oppositely arranged with described optical filter and is located at described optical filtering
Liquid crystal between piece and described array base palte.It is applied to by the light filter that providing the present invention or the present invention prepare
In liquid crystal display, it is possible to increase the brightness of liquid crystal display and respectively rate, and make the ash that liquid crystal display presented
Rank and brightness uniformity.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with following tool
Body embodiment is used for explaining the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the cross-sectional view of the LCD being provided according to prior art；
Fig. 2 a is according to the pixel arrangement schematic diagram in the color filter film of prior art；
Fig. 2 b be according to existing RGBW technical optimization after color filter film in pixel arrangement schematic diagram；
Fig. 3 is to be illustrated for the cross-section structure of the substrate with color filter film of liquid crystal display according to prior art
Figure；
Fig. 4 a-4h is that the preparation method of the substrate with color filter film for liquid crystal display shown in Fig. 3 is shown
It is intended to；
Fig. 5 is the cross-sectional view of the light filter for liquid crystal display according to the preferred embodiment of the present invention；
Fig. 6 is the preferred arrangement schematic diagram of the sub- picture element layer in the colour filter of the light filter shown in Fig. 5；
Fig. 7 is another kind of preferably arrangement schematic diagram of the sub- picture element layer in the colour filter of the light filter shown in Fig. 5；
Fig. 8 is that the region P shown in Fig. 7 is also not provided with perspective view during the first colored sub-pixels layer；
Fig. 9 a-9e is the preparation method schematic diagram of the light filter for liquid crystal display shown in Fig. 5；
Figure 10 be according to measurement light filter 1 and light filter 1* in each colored sub-pixels layer light transmittance obtain right
Ratio figure, wherein, solid line represents and is obtained by measurement light filter 1, and dotted line represents and obtained by measurement light filter 1*.
Description of reference numerals
10 array base palte 45 levelling blanket
11 substrate 46 prismatic layer
110 color filter film 47 ito film layer
12 liquid crystal layer 50 substrate
40 substrate 51 black matrix"
41 black matrix" 510 first opening
420 first opening 511 second opening
421 second opening 512 the 3rd opening
422 the 3rd opening 52 colour filter
423 the 4th opening 520 first colored sub-pixels layer
43 red light-sensitive material 521 second colored sub-pixels layers
44 color filter film 522 the 3rd colored sub-pixels layer
44a red sub-pixel layer 523 white sub-pixels layer
44b green sub-pixels layer 53 flatness layer
44c blue subpixels layer 54 wall
44d white sub-pixels layer 55 public electrode
Specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
The invention provides a kind of light filter for liquid crystal display, this light filter includes thering is the first sub-pixel area
The substrate 50 in domain, the second subpixel area and the 3rd subpixel area and the black matrix" 51 being located on substrate 50, black square
Battle array 51 include with described first subpixel area, described second subpixel area and described 3rd subpixel area corresponding the
One opening 510, the second opening 511 and the 3rd opening 512, described light filter also includes colour filter 52, and colour filter 52 includes and the
One opening 510, the second opening 511 and corresponding the first colored sub-pixels layer 520 of the 3rd opening 512, the second colored sub-pixels
Layer 521 and the 3rd colored sub-pixels layer 522 and be located at the first colored sub-pixels layer 520, the second colored sub-pixels layer 521 and the
At least one of three colored sub-pixels layers 522 colored sub-pixels in the layer white sub-pixels layer 523.Due to having dice first
In at least one of pixel layer 520, the second colored sub-pixels layer 521 and the 3rd colored sub-pixels layer 522 colored sub-pixels layer
Setting white sub-pixels layer 523.Therefore, this light filter has good color blending effect and higher light transmittance, should
When light filter is applied in liquid crystal display, it is possible to increase the screen intensity of liquid crystal display and resolution.Need explanation
That substrate 50 can be selected for glass substrate, black matrix" 51 can by select glass substrate on deposition light screening material after composition
Formed, black matrix" 51 is prevented from each colored sub-pixels layer colour mixture, increase the contrast of liquid crystal display, with regard to black simultaneously
The preparation method of colour moment battle array 51 will be described in the content below, and here is omitted.As for the first colored sub-pixels layer
520th, the second colored sub-pixels layer 521 and the 3rd colored sub-pixels layer 522 and white sub-pixels layer 523 are also by by accordingly
Material deposition then composition formed, the wherein first colored sub-pixels layer 520, the second colored sub-pixels layer 521 and the 3rd are coloured
Sub-pixel layer 522 and white sub-pixels layer 523 can be all by red resin, green resin, blue resins and transparent material respectively
As the preparation of the organic resin materials such as polymethyl methacrylate is formed it is to be understood that white sub-pixels layer 523 is transparent
Color, in addition red resin, green resin, blue resins and transparent material are both preferably light-sensitive material.In addition, each has dice picture
The color that plain layer is presented also is not limited to above-mentioned color, can be based entirely on actual demand and be selected.
As shown in Figure 5, white sub-pixels layer 523 is preferably provided at the opening corresponding to corresponding colored sub-pixels layer
The center of width, and corresponding colored sub-pixels layer then cover on white sub-pixels layer 523 it is possible to understand that
It is imbedded in corresponding colored sub-pixels layer for white sub-pixels layer 523.Corresponding colored sub-pixels layer preferably prolongs
Extend the both sides of the edge of the width of described corresponding opening, that is, cover corresponding opening.White is so set
Sub-pixel layer 523 and corresponding colored sub-pixels layer, can improve mixed effect and light transmittance and resolution further, with
When so that preparing of this light filter is simpler, such as after black matrix" 51 prepares, directly in corresponding opening deposit
Form white sub-pixels layer 523, then re-form corresponding colored sub-pixels layer and cover colored sub-pixels layer and corresponding opening.
In terms of orientation shown in from Fig. 5, the width of described corresponding opening should be understood to the left and right directions of described corresponding opening.
Further, it may be preferred that making the thickness less than black matrix" 51 for the thickness of white sub-pixels layer 523.So so that covering
Cover the corresponding colored sub-pixels layer on white sub-pixels layer 523 and will not produce segment difference that is to say, that can avoid having accordingly
Sub-pixels layer protuberance or the phenomenon subsided during being formed, and effectively increases corresponding colored sub-pixels layer
Surface smoothness, thus when this light filter and corresponding array base palte are combined formation liquid crystal display, enable to liquid crystal
The GTG of display and brightness uniformity, specifically so that the thickness of white sub-pixels layer 523 is less than the thickness of black matrix" 51
Degree, can control the segment difference being covered in the corresponding colored sub-pixels layer of white sub-pixels layer 523 in the scope less than 0.1 μm
Interior.Further, the thickness of white sub-pixels layer 523 and the difference of the thickness of black matrix" 51 are preferably not greater than 0.2 μm；This
Outward, also can make white sub-pixels layer 523 width be not more than corresponding colored sub-pixels layer width 2/3, so can
Improve the surface smoothness of corresponding colored sub-pixels layer further.Additionally, the thickness of white sub-pixels layer 523 is prepared relatively
Low additionally it is possible to when avoiding being coated with corresponding colored materials on white sub-pixels layer 523, flow to adjacent colored sub-pixels area
The phenomenon of color that changes in domain, and further increases color blending effect and the surface smoothness of corresponding colored sub-pixels layer.From Fig. 5
Shown orientation is seen, the width of white sub-pixels layer 523 should be understood to the distance between left and right of white sub-pixels layer 523,
Likewise, the width of each colored sub-pixels layer can be understood in the manner described above, therefore repeat no more.
White sub-pixels layer 523 arranges number in corresponding colored sub-pixels in the layer and set-up mode is not exposed to tool
Body limits.For example, as shown in Figure 6, when white sub-pixels layer 523 is 1, this white sub-pixels layer 523 can be made along phase
The length direction of the colored sub-pixels layer such as first colored sub-pixels layer 520 answered extends.In addition, when multiple such as 3 whites of setting
During sub-pixel layer 523, as shown in Figures 7 and 8, there is dice accordingly along this at least one corresponding colored sub-pixels layer
Length direction interval setting multiple white sub-pixels layer 523 of pixel layer.Because multiple white sub-pixels layers 523 are disposed on
In corresponding colored sub-pixels layer, between two adjacent white sub-pixels layers 523, it is formed with gap, then can in gap
Accommodate the colouring resin more forming corresponding colored sub-pixels layer so that the surface of the colored sub-pixels layer being formed is more flat
Whole.Angle shown in from Fig. 5, the length direction of colored sub-pixels layer should be understood to the fore-and-aft direction of this colored sub-pixels layer.
In addition, also can arrange on colour filter 52 flatness layer 53 improving the flatness of colour filter 52 further it is preferable that
The thickness of flatness layer 53 is 0.5-4 μm, and further, the thickness of flatness layer 53 is preferably 2 μm.And formed on flatness layer 53
Wall 54 with when this light filter is combined with array base palte can by the two spaced apart thus filling liquid between
It is preferable that the thickness of wall 54 is 2-4 μm, further, the thickness of wall 54 is preferably 3.3 μm to brilliant material.Wall
54 are preferably in the form of a column.It is understood that flatness layer 53 is made of clear material, wall 54 is made of clear material.In addition,
Wall 54 can not block, in setting, the light appearing that each colored sub-pixels layer goes out as far as possible, and wall 54 is preferably placed at adjacent
Two colored sub-pixels layers between black matrix" 51 top.It is pointed out that flatness layer 53 can pass through deposition cure
Formed, wall 54 is also from by corresponding material deposition, then composition is formed.
There is ito film layer in the substrate 50 side deposition contrary with colour filter 52 thus constituting common electrode layer 55.
Present invention also offers a kind of preparation method of the light filter for liquid crystal display, particularly, this preparation method
It is applied to the light filter prepared provided by the present invention for liquid crystal display, the preparation method of light filter comprises the following steps.
As shown in Figure 9 a, in the base with the first subpixel area, the second subpixel area and the 3rd subpixel area
On plate 50, depositing first material forms black matrix" 51, and so that black matrix" 51 is formed and described first subpixel area, described
Second subpixel area, first opening 510 corresponding with described 3rd subpixel area, the second opening 511 and the 3rd opening
512.
Wherein, described first material is preferably light screening material, this light screening material is deposited on substrate 50, then has
Expose in the presence of the light shield (i.e. mask plate) of light transmission part and shading light part, develop afterwards, ultimately form and have and described the
One subpixel area, described second subpixel area first opening 510 corresponding with described 3rd subpixel area, second open
Mouth 511 and the black matrix" 51 of the 3rd opening 512.First opening 510, the second opening 511 and the 3rd opening 512 can be distinguished
Corresponding covering the first colored sub-pixels layer 520 such as red sub-pixel layer, the second colored sub-pixels layer 521 such as green
Pixel layer and the 3rd colored sub-pixels layer 522 such as blue subpixels layer.
As shown in Figure 9 b, in the first opening 510, the second opening 511 and the 3rd opening 512, depositing second material is formed
White pixel layer 523.Preferably, the second material is deposited on the center of the width of corresponding opening it is possible to understand that
, the white sub-pixels layer 523 of formation do not contacted with adjacent black matrix" 51.
Wherein, the second material is preferably the organic resin materials such as transparent material such as polymethyl methacrylate.Have
Deposit this transparent material on the substrate 50 of black matrix" 51, then expose in the presence of light shield, development afterwards forms white picture
Plain layer 523.Further, it may be preferred that making the thickness less than black matrix" 51 for the thickness of white sub-pixels layer 523, can will be covered in
The segment difference of the corresponding colored sub-pixels layer of white sub-pixels layer 523 controls in the range of less than 0.1 μm thus improving coloured
The surface smoothness of sub-pixel layer.Further, the thickness of white sub-pixels layer 523 is preferred with the difference of the thickness of black matrix" 51
For being not more than 0.2 μm；Additionally, the width of the width no more than corresponding colored sub-pixels layer of white sub-pixels layer 523 also can be made
The 2/3 of degree, so can improve the surface smoothness of corresponding colored sub-pixels layer further.
In the specific preparation process of white sub-pixels layer 523, may be selected to form 1 white in corresponding opening
Pixel layer 523 or multiple such as 3 white sub-pixels layers 523, when being formed with 1 so that white sub-pixels layer 523 is along correspondence
The length direction of opening extend and namely extend along the length direction of the corresponding colored sub-pixels layer of cover it afterwards；
When being formed with multiple so that multiple white sub-pixels layer 523 along corresponding opening length direction interval formation i.e. edge
The length direction interval of the corresponding colored sub-pixels layer of cover it is formed afterwards, so adjacent white sub-pixels layer
Form the material that corresponding colored sub-pixels layer formed more can be filled in gap between 523.
As shown in Fig. 9 c, in the first opening 510, the second opening 511 and the 3rd opening 512, deposit the 3rd material respectively
Material, the 4th material and the 5th material, to form the first colored sub-pixels layer 520, second respectively in the outside of white pixel layer 523
Colored sub-pixels layer 521 and the 3rd colored sub-pixels layer 522.Preferably so that the first colored sub-pixels layer 520, second is coloured
Sub-pixel layer 521 and the 3rd colored sub-pixels layer 522 can cover each self-corresponding opening and also can cover white sub- picture
Plain layer 523.
Wherein, the 3rd material, the 4th material and the 5th material are respectively preferably red resin, green resin and blue tree
Fat, then the first colored sub-pixels layer 520, the second colored sub-pixels layer 521 and the 3rd colored sub-pixels layer 522 are corresponding respectively
For white sub-pixels layer, green sub-pixels layer and blue subpixels layer.Red resin, green resin and blue resins are photosensitive
Material.When preparing red sub-pixel layer, red resin is deposited on the substrate 50 with white sub-pixels layer 523, then
Expose in the presence of there is the light shield of light transmission part and shading light part, when red resin is exposed portion removed eurymeric light
During quick material, the shading light part of light shield is the first opening 510 corresponding to corresponding opening, when red resin retains for exposed portion
During the negative type photosensitive material getting off, the light transmission part of light shield corresponds to the first opening 510, and afterwards, development forms red sub-pixel
Layer.The substrate 50 have red sub-pixel layer deposits the 4th material, can be selected for and red sub-pixel layer identical preparation side
It is at the second opening 511 that method makes green sub-pixels layer be formed at corresponding opening.Likewise, by red and green with formation
Sub-pixel layer identical method forms blue subpixels layer at the 3rd opening 512.
After the completion of the preparation of each colored sub-pixels layer, as shown in Fig. 9 d, the 6th material is deposited on first dice
To form flatness layer 53 on pixel layer 520, the second colored sub-pixels layer 521 and the 3rd colored sub-pixels layer 522.Flatness layer 53 can
To solidify to form after deposit.Preferably so that the thickness of the flatness layer 53 being formed is 0.5-4 μm, further, flatness layer 53
Thickness be preferably 2 μm.It is understood that in order to not affect the light appearing at each colored sub-pixels layer, described 6th material
Expect for organic resin materials such as transparent material such as polymethyl methacrylates.
As seen in Fig. 9e, the 7th material is deposited on flatness layer 53 to form wall 54.When by the 7th material deposit
Afterwards, expose in the presence of light shield, then development forms wall 54.Wherein, wall 54 can be in the form of a column, in addition, can make
The thickness of the wall 54 being formed is 2-4 μm, and further, the thickness of wall 54 is preferably 3.3 μm.In order to not block each
The light appearing at colored sub-pixels layer, can make the black square that wall 54 is formed between adjacent two colored sub-pixels layer
The top of battle array 51.Described 7th material can be transparent material, for example, can be minus photoresistance, wherein without any colored pigment or
Person's dyestuff.
Carry out plated film in substrate 50 side contrary with black matrix" 51 and form public electrode 55, the material that wherein film is selected
Expect for ITO.
Invention further provides a kind of liquid crystal display, this liquid crystal display include provided by the present invention for liquid crystal
Show the colour filter that the light filter of device or the preparation method of the light filter for liquid crystal display provided by the present invention prepare
Piece, this liquid crystal display is also included the array base palte being oppositely arranged with described optical filter and is located at described optical filter and described battle array
Liquid crystal between row substrate.Liquid crystal display is applied to by the light filter that providing the present invention or the present invention prepare
In, it is possible to increase the color blending effect of liquid crystal display and resolution.
Light filter for liquid crystal display provided by the present invention will be further illustrated by specific contrast below
Effect.
Light filter 1 (being provided by the preferred embodiment for the present invention)：As shown in Figure 5, this light filter 1 includes having its structure
The substrate 50 of the first subpixel area, the second subpixel area and the 3rd subpixel area and the black square being located on substrate 50
Battle array 51, black matrix" 51 includes and described first subpixel area, described second subpixel area and described 3rd sub-pixel area
The first corresponding opening 510 of domain, the second opening 511 and the 3rd opening 512, described light filter also includes colour filter 52, colour filter
Layer 52 includes and the first opening 510, the second opening 511 and the corresponding red sub-pixels layer of the 3rd opening 512, green sub-pixels layer
With blue subpixels layer and be located at red sub-pixels layer, green sub-pixels layer and blue subpixels in the layer white sub-pixels layer
523.Wherein, the thickness of red sub-pixel layer is 2.35 μm, and the thickness of green sub-pixels layer is 2.31 μm, blue subpixels layer
Thickness is 1.97 μm, and in each colored sub-pixels layer, white sub-pixels layer 523 is three, each white sub-pixels layer
523 thickness is 1 μm, and width is 20 μm, and length is 40 μm.
Light filter 1* (comparative example)：Essentially identical with the structure of light filter 1, simply will be in each colored sub-pixels layer
White sub-pixels layer 523 remove.
From the colorimetric instrument of model MCPD being provided by Japanese great Zhong company, to above-mentioned light filter 1 and light filter
The chromatic value of each colored sub-pixels layer in 1* measures, and light transmittance is measured, its result such as table 1 below with
And shown in Figure 10.
Table 1
Shown in above-mentioned table 1 and Figure 10, it is known that the light filter for liquid crystal display provided by the present invention
In although being simply provided with the white sub-pixels layer of reduced size in each colored sub-pixels layer, but the light of light filter is worn
Rate has obtained larger lifting thoroughly.
Describe the preferred embodiment of the present invention above in association with accompanying drawing in detail, but, the present invention is not limited to above-mentioned reality
Apply the detail in mode, in the range of the technology design of the present invention, multiple letters can be carried out to technical scheme
Monotropic type, these simple variant belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to various can
The compound mode of energy no longer separately illustrates.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as it is without prejudice to this
The thought of invention, it equally should be considered as content disclosed in this invention.
Claims (13)
1. a kind of light filter for liquid crystal display it is characterised in that this light filter include having the first subpixel area,
The substrate (50) of two subpixel area and the 3rd subpixel area and the black matrix" (51) being located on described substrate (50), institute
State black matrix" (51) to include and described first subpixel area, described second subpixel area and described 3rd subpixel area
Corresponding the first opening (510), the second opening (511) and the 3rd opening (512), described light filter also includes colour filter
(52), described colour filter (52) includes and described first opening (510), described second opening (511) and described 3rd opening
(512) the first corresponding colored sub-pixels layer (520), the second colored sub-pixels layer (521) and the 3rd colored sub-pixels layer
(522) and positioned at described first colored sub-pixels layer (520), the second colored sub-pixels layer (521) and the 3rd colored sub-pixels
At least one of layer (522) colored sub-pixels in the layer white sub-pixels layer (523).
2. the light filter for liquid crystal display according to claim 1 is it is characterised in that described white sub-pixels layer
(523) thickness is less than the thickness of described black matrix" (51).
3. the light filter for liquid crystal display according to claim 2 is it is characterised in that described white sub-pixels layer
(523) thickness is not more than 0.2 μm with the difference of the thickness of described black matrix" (51)；The width of described white sub-pixels layer (523)
Degree is not more than the 2/3 of the width of corresponding colored sub-pixels layer.
4. the light filter for liquid crystal display according to claim 1 is it is characterised in that described white sub-pixels layer
(523) it is arranged on the center of the width of opening corresponding to corresponding colored sub-pixels layer, corresponding coloured
Sub-pixel layer covers upper in described white sub-pixels layer (523) and width that extend to described opening both sides of the edge.
5. the light filter for liquid crystal display according to claim 1 is it is characterised in that have accordingly at least one
In sub-pixels layer, the length direction along this corresponding colored sub-pixels layer is arranged at intervals with multiple described white sub-pixels layers
(523).
6. the light filter for liquid crystal display according to claim 1 is it is characterised in that this light filter includes being formed at
Flatness layer (53) on described colour filter (52) and the wall (54) that is located on described flatness layer (53) are it is preferable that described
Wall (54) is located at the top of the black matrix" (51) between two adjacent colored sub-pixels layers.
7. the light filter for liquid crystal display according to claim 6 is it is characterised in that the thickness of described flatness layer (53)
Spend for 0.5-4 μm；The thickness of described wall (54) is 2-4 μm；Described flatness layer (53) is made of clear material；Described interval
Layer (54) is made of clear material.
8. the light filter for liquid crystal display according to any one in claim 1-7 is it is characterised in that described
One colored sub-pixels layer (520), described second colored sub-pixels layer (521) and described 3rd colored sub-pixels layer (522) are respectively
Formed by the preparation of red resin, green resin and blue resins；Described white sub-pixels layer (523) prepares shape by transparent material
Become；Described black matrix" (51) is formed by light screening material preparation.
9. a kind of preparation method of the light filter for liquid crystal display is it is characterised in that comprise the following steps：
S1, in the upper deposition of the substrate (50) with the first subpixel area, the second subpixel area and the 3rd subpixel area the
One material formed black matrix" (51), and make described black matrix" (51) formed with described first subpixel area, described second
Subpixel area first opening (510) corresponding with described 3rd subpixel area, the second opening (511) and the 3rd opening
(512)；
S2, in described first opening (510), described second opening (511) and described 3rd opening (512) depositing second material
Form white pixel layer (523)；
S3, described white pixel layer (523) formed after, described first opening (510), described second opening (511) and
The 3rd material, the 4th material and the 5th material is deposited respectively, with described white pixel layer in described 3rd opening (512)
(523) outside forms the first colored sub-pixels layer (520) respectively, the second colored sub-pixels layer (521) and the 3rd has dice picture
Plain layer (522).
10. the light filter for liquid crystal display according to claim 9 preparation method it is characterised in that include with
Lower step：
S4, the described first colored sub-pixels layer (520) the 6th material being deposited on formation, described second colored sub-pixels layer
(521) to form flatness layer (53) and on described 3rd colored sub-pixels layer (522)；
S5, in upper the 7th material that deposits of described flatness layer (53) to form wall (54).
The preparation method of 11. light filters for liquid crystal display according to claim 10 is it is characterised in that described
One material is light screening material；Described 3rd material, described 4th material and described 5th material are respectively red resin, green tree
Fat and blue resins；Described second material is transparent material；Described 6th material is transparent material；Described 7th material is transparent
Material.
The preparation method of 12. light filters for liquid crystal display according to any one in claim 9-11, it is special
Levy and be, in described step S2, the thickness of the described white pixel layer (523) of formation of deposits is less than described black matrix" (51)
Thickness it is preferable that the thickness of described white sub-pixels layer (523) is not more than with the difference of the thickness of described black matrix" (51)
0.2μm.
A kind of 13. liquid crystal displays are it is characterised in that this liquid crystal display includes using described in any one in claim 1-8
The light filter for liquid crystal display described in any one in the light filter of liquid crystal display or claim 9-12
The light filter that preparation method prepares, this liquid crystal display also include the array base palte being oppositely arranged with described optical filter and
Liquid crystal between described optical filter and described array base palte.
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| CN201611255360.1A CN106483707B (en) | 2016-12-30 | 2016-12-30 | Colour filter for liquid crystal display and preparation method thereof and liquid crystal display |
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| CN110618554A (en) * | 2019-09-26 | 2019-12-27 | 厦门天马微电子有限公司 | Color film substrate, display panel and display device |
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| CN106483707B (en) | 2019-11-01 |
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Effective date of registration: 20230530 Address after: 241000 No.36 weier'er Road, Wanchun street, Wuhu Economic and Technological Development Zone, Anhui Province Patentee after: WUHU TUNGHSU PHOTOELECTRIC SCIENCE AND TECHNOLOGY Co.,Ltd. Patentee after: TUNGHSU GROUP Co.,Ltd. Patentee after: TUNGHSU TECHNOLOGY GROUP Co.,Ltd. Address before: Room 1517, Building 1 (International Building), No. 167 Qianjin Middle Road, Development Zone, Kunshan City, Suzhou City, Jiangsu Province, 215300 Patentee before: DONGXU (KUNSHAN) DISPLAY MATERIAL Co.,Ltd. Patentee before: TUNGHSU GROUP Co.,Ltd. Patentee before: TUNGHSU TECHNOLOGY GROUP Co.,Ltd. |