Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the present invention provides a kind of production method of liquid crystal display, color film basePlate and liquid crystal display.The production method can control required liquid crystal display in red spectral band, blue wave band and green light bandOn all simultaneously there is required OFF state exitance, the OFF state effect of liquid crystal display can be improved, reach high contrast, heightThe purpose of NTSC, low colour cast.
The technical problems to be solved by the invention are achieved by the following technical programs:
A kind of production method of liquid crystal display, comprising:
Step 1: the OFF state according to multiple regular liquid crystal displays is emitted spectrum and its corresponding box is thick, establishes OFF state emergent lightSpectrum-box thickness correlation model；
Step 2: being emitted spectrum-box thickness correlation model according to the OFF state established, calculate and respectively reach required R wave band OFF state and go outWhen penetrating rate, G-band OFF state exitance and B wave band OFF state exitance, corresponding first box is thick, the second box is thick and third boxIt is thick；
Step 3:, second box thickness thick according to calculated first box and third box are thick, liquid crystal display needed for making, required liquid crystalThe color membrane substrates of display towards liquid crystal layer one side correspond to R sub-pixel Zone R domain, corresponding to G sub-pixel the region G andThere is different height, the array substrate court of required liquid crystal display corresponding at least two regions in the B area of B sub-pixelTo liquid crystal layer one side correspond to R sub-pixel Zone R domain, the region G corresponding to G sub-pixel and the area B corresponding to B sub-pixelAt least two regions in domain have different height, so that required liquid crystal display has the first box thickness, in the area G in Zone R domainDomain is thick with the second box and has third box thick in B area.
Further, at least two in the R sub-pixel, G sub-pixel and B sub-pixel of the RGB coloured silk film layer of the color membrane substratesA sub-pixel have different ink thickness so that the color membrane substrates towards liquid crystal layer one side in Zone R domain, the region G and the area BAt least two regions in domain have different height；Alternatively, being covered with one first in the RGB coloured silk film layer of the color membrane substrates thoroughlyBright flatness layer, at least two region of the first transparent planar layer in Zone R domain, the region G and B area have different materialsThickness, so that at least two regions of the one side in Zone R domain, the region G and B area of the color membrane substrates towards liquid crystal layer haveDifferent height.
Further, it is covered with one second transparent planar layer on the tft array layer of the array substrate, described second is transparentAt least two regions of the flatness layer in corresponding Zone R domain, the region G and B area have different material thickness, so that the arrayAt least two regions of the one side in Zone R domain, the region G and B area of substrate towards liquid crystal layer have different height.
Further, step 1 includes:
Step 1.1: solving the Jones matrix for obtaining multiple regular liquid crystal displays respectively, each regular liquid crystal display has notSame box is thick；
Step 1.2: according to each Jones matrix obtained, extrapolating the OFF state outgoing spectrum of each regular liquid crystal display；
Step 1.3: it is thick according to each OFF state outgoing spectrum obtained and its corresponding box, establish OFF state outgoing spectrum-box thickness phaseClose model.
Further, the OFF state outgoing spectrum-box thickness correlation model includes that light is aobvious by the common liquid crystals being not powered onR wave band OFF state exitance-box thickness correlation model, G-band OFF state exitance-box thickness correlation model and B wave band OFF state after showing deviceExitance-box thickness correlation model.
Further, step 1.3 includes:
Step 1.3.1: from each OFF state of acquisition outgoing spectrum, the R wave band for respectively obtaining each regular liquid crystal display is closedState exitance, G-band OFF state exitance and B wave band OFF state exitance；
Further, it step 1.3.2: is closed according to obtained each R wave band OFF state exitance, G-band OFF state exitance and B wave bandThe discrete point of state exitance and its corresponding box thickness establishes R wave band OFF state exitance-box thickness relevant mode using regression equation respectivelyType, G-band OFF state exitance-box thickness correlation model and B wave band OFF state exitance-box thickness correlation model.
The one side of a kind of liquid crystal display, color membrane substrates towards liquid crystal layer is corresponding to the Zone R domain of R sub-pixel, correspondenceAt least two regions in the region G in G sub-pixel and the B area corresponding to B sub-pixel have different height, array baseThe one side of plate towards liquid crystal layer in the Zone R domain corresponding to R sub-pixel, the region G corresponding to G sub-pixel and corresponds to B sub-pixelB area at least two regions there is different height, with Zone R domain have the first box it is thick, in the region G with the second boxIt is thick and thick with third box in B area.
At least two sub-pixels tool in the R sub-pixel of the RGB coloured silk film layer of the color membrane substrates, G sub-pixel and B sub-pixelHave different ink thickness so that the color membrane substrates towards liquid crystal layer one side in Zone R domain, the region G and B area at leastTwo regions have different height；Alternatively, it is covered with one first transparent planar layer in the RGB coloured silk film layer of the color membrane substrates,At least two region of the first transparent planar layer in Zone R domain, the region G and B area have different material thickness, so thatAt least two regions of the one side in Zone R domain, the region G and B area of the color membrane substrates towards liquid crystal layer have different heightDegree.
Further, it is covered with one second transparent planar layer on the tft array layer of the array substrate, described second is transparentAt least two regions of the flatness layer in corresponding Zone R domain, the region G and B area have different material thickness, so that the arrayAt least two regions of the one side in Zone R domain, the region G and B area of substrate towards liquid crystal layer have different height.
The invention has the following beneficial effects: the production methods by the color membrane substrates and array substrate of required liquid crystal displayIt is fabricated to different height on one side towards liquid crystal layer, so that the box thickness of required liquid crystal display is that non-uniform throughout is equal,Arrange in pairs or groups again corresponding sub-pixel, with liquid crystal display needed for controlling on red spectral band, blue wave band and green light band all simultaneouslyWith required OFF state exitance, the regular liquid crystal display equal compared to existing box thickness uniform throughout can improve liquidThe OFF state effect of crystal display, so that the liquid crystal display of the liquid crystal display of normally black mode more black, normal white mode in OFF stateIt is whiter in OFF state, achieve the purpose that high contrast, high NTSC, low colour cast.
Embodiment one
As shown in figure 3, a kind of production method of liquid crystal display, comprising:
Step 1: the OFF state according to multiple regular liquid crystal displays is emitted spectrum and its corresponding box is thick, establishes OFF state emergent lightSpectrum-box thickness correlation model；
In the step 1, the box thickness refers to 3 thickness of liquid crystal layer in liquid crystal display.
The OFF state is emitted the liquid crystal display that spectrum refers to that light process is not powered on, and (normally black mode is black state, Chang BaiMode is white state) after exitance curve on different-waveband, including OFF state reflectance curve and OFF state transmittance curve, due toIt can be converted mutually by certain numerical value between OFF state reflectance curve and OFF state transmittance curve, OFF state reflectance curveIt can also be indicated with OFF state transmittance curve, and reflection LCD is using OFF state reflectivity as OFF state index, thoroughlyType liquid crystal display is crossed using OFF state transmitance as OFF state index, therefore, this case is emitted spectrum using OFF state to state.
Wherein, as shown in Fig. 1,4 and 5, liquid crystal display include up and down with respect to fitting color membrane substrates 1 and array substrate 2,It is filled with liquid crystal layer 3 between the color membrane substrates 1 and array substrate 2, the first underlay substrate 11 of the color membrane substrates 1 is towards instituteIt states and is provided with RGB coloured silk film layer 12 in the one side of array substrate 2, the second underlay substrate 21 of the array substrate 2 is towards the coloured silkTft array layer 22 is provided in the one side of ilm substrate 1；The RGB coloured silk film layer 12 includes multiple rgb pixels, and each rgb pixel is equalBy a R sub-pixel, a G sub-pixel and a B sub-pixel group at.
As shown in Figure 1, regular liquid crystal display refers to that it corresponds to the Zone R domain of R sub-pixel, the G corresponding to G sub-pixelIt region and is shown corresponding to thick (3 thickness of liquid crystal layer) equal custom liquid crystals of uniform throughout of box between the B area of B sub-pixelDevice.
The step 1 specifically includes:
Step 1.1: solving the Jones matrix for obtaining multiple regular liquid crystal displays respectively, each regular liquid crystal display has notSame box is thick；
In the step 1.1, if the required liquid crystal display of production is normally black mode, common liquid crystals used in Jones matrix are solvedDisplay is also normally black mode, if the required liquid crystal display of production is normal white mode, is solved common used in Jones matrixLiquid crystal display is also normal white mode.
When solving Jones matrix, first detection, which obtains, to be related to needed for calculating Jones matrix in each regular liquid crystal displayMaterial optical parameter (transmittance curve of such as polaroid, the dispersion curve of compensation film, liquid crystal dispersion curve), then willThe optical parameter of required material is input in Jones matrix software for calculation, and it is corresponding to solve each regular liquid crystal display by softwareJones matrix.
Step 1.2: according to each Jones matrix obtained, extrapolating the OFF state emergent light of each regular liquid crystal displaySpectrum；
As described above, the OFF state outgoing spectrum extrapolated substantially has two curves of spectrum, one is OFF state reflectance curve, separatelyOne is OFF state transmittance curve.
By taking the reflection LCD of normally black mode as an example, as shown in Fig. 2, solid line LC_R1, LC_R2 and LC_R3 are exactlyThe OFF state reflectance spectrum of the box thickness extrapolated corresponding regular liquid crystal display when being respectively R1, R2 and R3.
Step 1.3: it is thick according to each OFF state outgoing spectrum obtained and its corresponding box, establish OFF state outgoing spectrum-boxThick correlation model.
In the step 1.3, the OFF state outgoing spectrum-box thickness correlation model includes that light passes through the common liquid crystals being not powered onR wave band OFF state exitance-box thickness correlation model, G-band OFF state exitance-box thickness correlation model and B wave band after display closeState exitance-box thickness correlation model.
In a kind of specific modeling method, which is specifically included:
Step 1.3.1: from each OFF state of acquisition outgoing spectrum, the R wave band for respectively obtaining each regular liquid crystal display is closedState exitance, G-band OFF state exitance and B wave band OFF state exitance；
In step 1.3.1, if the required liquid crystal display of production is reflection-type, what is obtained is R wave band OFF state reflectivity, GWave band OFF state reflectivity and B wave band OFF state reflectivity；If the required liquid crystal display of production is infiltration type, what is obtained is R waveSection OFF state transmitance, G-band OFF state transmitance and B wave band OFF state transmitance.
It can be, but not limited to if the required liquid crystal display of production is normally black mode by its OFF state in order to facilitate calculatingIt is emitted the minimum of each wave band in spectrum or average OFF state reflection/transmission rate corresponds to the OFF state exitance of wave band as it, thanSuch as: using the minimum of red spectral band or average OFF state reflection/transmission rate as its R wave band OFF state exitance, with green light band mostLow or average OFF state reflection/transmission rate as its G-band OFF state exitance, with the minimum of blue wave band or average OFF state reflection/Transmitance is as its B wave band OFF state exitance；If production required liquid crystal display be normal white mode, can be, but not limited to byIts OFF state is emitted the highest of each wave band in spectrum or average OFF state reflection/transmission rate is emitted as its OFF state for corresponding to wave bandRate, such as: using the highest of red spectral band or average OFF state reflection/transmission rate as its R wave band OFF state exitance, with green light bandHighest or average OFF state reflection/transmission rate as its G-band OFF state exitance, it is anti-with the highest of blue wave band or average OFF statePenetrate/transmitance is as its B wave band OFF state exitance.
Certainly, the R wave band OFF state exitance, G-band OFF state exitance and B wave band OFF state exitance of modeling are not limited toIn above-mentioned minimum, peak or average value, different choosing methods can be used according to actual demand, for example take weighted valueDeng.
Step 1.3.2: go out according to obtained each R wave band OFF state exitance, G-band OFF state exitance and B wave band OFF stateThe discrete point for penetrating rate and its corresponding box thickness establishes R wave band OFF state exitance-box thickness correlation model, G using regression equation respectivelyWave band OFF state exitance-box thickness correlation model and B wave band OFF state exitance-box thickness correlation model.
In step 1.3.2, the discrete point of modeling includes: R wave band OFF state exitance-box thickness discrete point, G-bandOFF state exitance-box thickness discrete point and B wave band OFF state exitance-box thickness discrete point.
It illustrates, regression equation is established by discrete point only to facilitate understand that this case enumerates wherein oneThe specific modeling pattern of kind, the protection scope of this case should include other existing modeling patterns.
Step 2: being emitted spectrum-box thickness correlation model according to the OFF state established, calculate and respectively reach required R wave band passWhen state exitance, G-band OFF state exitance and B wave band OFF state exitance, corresponding first box thickness h1, the second box thickness h2 andThird box thickness h3；
In the step 2, if the required liquid crystal display of production is the reflection-type of normally black mode, it is desirable for extremely low R wave bandOFF state reflectivity, G-band OFF state reflectivity and B wave band OFF state reflectivity；If the required liquid crystal display of production is normally black modeInfiltration type, then be desirable for extremely low R wave band OFF state transmitance, G-band OFF state transmitance and B wave band OFF state transmitance；IfThe required liquid crystal display of production is the reflection-type of normal white mode, then is desirable for high R wave band OFF state reflectivity, G-bandOFF state reflectivity and B wave band OFF state reflectivity；If the required liquid crystal display of production is the infiltration type of normal white mode, needed forIt is high R wave band OFF state transmitance, G-band OFF state transmitance and B wave band OFF state transmitance.
In order to keep the OFF state effect of required liquid crystal display best, the first box thickness h1, the second box thickness h2 and third are being calculatedWhen box thickness h3, optimally, R wave band OFF state exitance, G-band OFF state exitance and B wave band OFF state exitance are all made of OFF state and go outPenetrate OFF state reflectivity/transmitance minimum or peak in spectrum-box thickness correlation model.
But in specific implementation, the processing procedure precision of various manufacturers is different, and therefore, the R wave band that when calculation box thickness uses closesState exitance, G-band OFF state exitance and B wave band OFF state exitance may be in OFF state outgoing spectrum-box thickness correlation modelOFF state reflectivity/transmitance lower value or high value, wherein if production required liquid crystal display be normally black mode,OFF state reflectivity/transmitance lower value is advisable between 0-10%, if the required liquid crystal display of production is normal white mode,OFF state reflectivity/transmitance high value is advisable in 90-100%, specifically depending on the processing procedure precision of various manufacturers.
By taking the reflection LCD of normally black mode as an example, made according to three OFF state reflectance spectrums shown in Fig. 2If liquid crystal display needed for making, it can could see, when box thickness is R1, OFF state of the regular liquid crystal display in red spectral bandReflectivity is extremely low, and when box thickness is R2, OFF state reflectivity of the regular liquid crystal display in green light band is extremely low, when box thickness is R3When, OFF state reflectivity of the regular liquid crystal display in blue wave band is extremely low, then, in order to make required liquid crystal display in feux rougesThere is extremely low OFF state reflectivity simultaneously, so that it may according to first box thickness h1=R1, the in wave band, green light band and blue wave bandTwo box thickness h2=R2 and third box thickness h3=R3 make required liquid crystal display.
Step 3: according to calculated first box thickness h1, the second box thickness h2 and third box thickness h3, liquid crystal display needed for makingDevice, the color membrane substrates 1 of required liquid crystal display towards liquid crystal layer 3 one side in the Zone R domain for corresponding to R sub-pixel, correspond to GThe region G of pixel and corresponding at least two regions in the B area of B sub-pixel have different height, required liquid crystal displayThe array substrate 2 of device towards liquid crystal layer 3 one side in the Zone R domain for corresponding to R sub-pixel, corresponding to the region G of G sub-pixel and rightThere should be different height at least two regions in the B area of B sub-pixel, so that required liquid crystal display has in Zone R domainHave the first box thickness h1, the region G with the second box thickness h2 and B area have third box thickness h3.
In the step 3, required liquid crystal display its in addition to the box thickness ununiformity between Zone R domain, the region G and B area it is even equalExcept, the materials such as polaroid, base plate glass, liquid crystal molecule, ITO and RGB ink are all made of identical as regular liquid crystal displaySpecification.
Due to simultaneously on the color membrane substrates 1 and array substrate 2 control needed for liquid crystal display Zone R domain, the region G andBox in B area is thick, the color membrane substrates 1 towards liquid crystal layer 3 one side may on certain two region height having the same,And at this time needed for liquid crystal display the thick difference of box by the array substrate 2 towards two regions corresponding in the one side of liquid crystal layer 3Difference in height control, vice versa.
By taking the reflection LCD of normally black mode as an example, when the Zone R domain of required liquid crystal display has the first box thickWhen h1=R1, the region G have third box thickness h3=R3 with second box thickness h2=R2 and B area, the OFF state of the required liquid crystal displayFor reflectance spectrum as shown in fig. 6, solid line LC_R is the OFF state reflectance spectrum in Zone R domain, solid line LC_G is the OFF state reflected light in the region GSpectrum, LR_B be B area OFF state reflectance spectrum, can could see, Zone R domain, the region G and B area simultaneously red spectral band,Extremely low OFF state reflectivity is maintained in green light band and blue wave band.
In one embodiment, as shown in figure 4, the R sub-pixel of the RGB coloured silk film layer 12 of the color membrane substrates 1, G pictureAt least two sub-pixels in element and B sub-pixel have different ink thickness, so that the color membrane substrates 1 are towards liquid crystal layer 3At least two regions of the one side in Zone R domain, the region G and B area there is different height；The TFT battle array of the array substrate 2One second transparent planar layer 23 is covered on column layer 22, the second transparent planar layer 23 is in corresponding Zone R domain, the region G and B areaIn at least two regions have different material thickness so that the array substrate 2 towards liquid crystal layer 3 one side Zone R domain,At least two regions in the region G and B area have different height.
In another embodiment, as shown in figure 5, to be covered with one first in the RGB coloured silk film layer 12 of the color membrane substrates 1 transparentFlatness layer 13, at least two regions of the first transparent planar layer 13 in Zone R domain, the region G and B area have different materialsThickness is expected, so that the color membrane substrates 1 are towards at least two regions of the one side in Zone R domain, the region G and B area of liquid crystal layer 3With different height；It is covered with one second transparent planar layer 23 on the tft array layer 22 of the array substrate 2, described secondAt least two regions of the transparent planar layer 23 in corresponding Zone R domain, the region G and B area have different material thickness, so that instituteAt least two regions of the one side in Zone R domain, the region G and B area for stating array substrate 2 towards liquid crystal layer 3 have different heightDegree.
The first transparent planar layer 13 and the second transparent planar layer 23 are preferably but not limited to as OC glue.
The production method makes the one side of the color membrane substrates 1 of required liquid crystal display and array substrate 2 towards liquid crystal layer 3At different height, so that the box thickness of required liquid crystal display is equal for non-uniform throughout, then corresponding sub-pixel of arranging in pairs or groups, withLiquid crystal display needed for controlling all has required OFF state exitance simultaneously on red spectral band, blue wave band and green light band,The regular liquid crystal display equal compared to existing box thickness uniform throughout, can improve the OFF state effect of liquid crystal display, makeThe liquid crystal display for obtaining liquid crystal display more black, normal white mode in OFF state of normally black mode is whiter in OFF state, reaches high rightThan degree, high NTSC, low colour cast purpose.
The production method is particularly suitable for OFF state effect to the thick sensitive distortion type liquid crystal display of box, but to non-distorted typeLiquid crystal display is equally applicable.