CN102707481B - Display panels and preparation method thereof, liquid crystal display - Google Patents
Display panels and preparation method thereof, liquid crystal display Download PDFInfo
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- CN102707481B CN102707481B CN201210068963.6A CN201210068963A CN102707481B CN 102707481 B CN102707481 B CN 102707481B CN 201210068963 A CN201210068963 A CN 201210068963A CN 102707481 B CN102707481 B CN 102707481B
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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
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
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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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/52—RGB geometrical arrangements
Abstract
The invention provides a kind of display panels and preparation method thereof, liquid crystal display, belong to field of liquid crystal display.Wherein, this display panels comprises first substrate, second substrate, transparency electrode, setting color display layer on the first substrate and thin film transistor (TFT), described color display layer comprises multiple pixel cell, described each pixel cell comprises the first Transmission sub-pixel, the second Transmission sub-pixel and the 3rd Transmission sub-pixel, described first Transmission sub-pixel is formed by the first Polymer Dispersed Liquid Crystal, described second Transmission sub-pixel is formed by the second Polymer Dispersed Liquid Crystal, and described 3rd Transmission sub-pixel is formed by terpolymer dispersed LCD.The present invention can simplify the manufacture craft of display panels, and solves in transflective liquid crystal display mode, the problem that the reflector space of display panels is different with the brightness of regional transmission.
Description
Technical field
The present invention relates to field of liquid crystal display, refer to a kind of display panels and preparation method thereof, liquid crystal display especially.
Background technology
Traditional liquid crystal display comprises first substrate, second substrate, transparency electrode and the liquid crystal layer be arranged between first substrate and second substrate, also be provided with color rete on the first substrate, color rete comprises multiple pixel cell, each pixel cell comprises three sub-pixels, be respectively red sub-pixel, green sub-pixels and blue subpixels, each subpixel area is respectively arranged with a thin film transistor (TFT), for controlling the liquid crystal deflecting element of subpixel area, due to liquid crystal deflecting element through light obtain redgreenblue light by color rete again, different Show Colors can be obtained by the intensity controlling redgreenblue light, thus color display.Traditional liquid crystal display generally needs when making to make color rete separately through patterning processes, and technics comparing is complicated.
At present, create a kind of transflective liquid crystal display mode, have transmission-type and reflective characteristic simultaneously, transflective liquid crystal panel includes the regional transmission of transparency electrode and has the reflector space in reflection horizon in a pixel domain.The regional transmission of pixel region and backlight can be utilized in the place of dark to show portrait, utilize the reflector space of pixel region and outer light to show portrait in bright place.Therefore, semi-transmission semi-reflection LCD does not need to use backlight constantly, thus has the advantage that can reduce power consumption.But there is the low problem of reflector space brightness in traditional transflective liquid crystal display mode, because pass twice through color film at reflector space incident light, and cause transmitance to reduce, make reflector space different with the brightness that regional transmission shows, that is transflective liquid crystal panel there will be colored unbalanced problem.In order to solve this problem, traditional transflective liquid crystal display mode adopts on color film, processes the transmitance that LightHole (printing opacity hole) improves reflector space, but just substantially increases the complicacy of manufacturing process like this.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of display panels and preparation method thereof, liquid crystal display, the manufacture craft of display panels can be simplified, and solve in transflective liquid crystal display mode, the problem that the reflector space of display panels is different with the brightness of regional transmission.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme as follows:
The invention provides a kind of display panels, comprise first substrate, second substrate, transparency electrode, setting color display layer on the first substrate and thin film transistor (TFT), described color display layer comprises multiple pixel cell, described each pixel cell comprises the first Transmission sub-pixel, the second Transmission sub-pixel and the 3rd Transmission sub-pixel, described first Transmission sub-pixel is formed by the first Polymer Dispersed Liquid Crystal, described second Transmission sub-pixel is formed by the second Polymer Dispersed Liquid Crystal, and described 3rd Transmission sub-pixel is formed by terpolymer dispersed LCD.
Preferably, described first Transmission sub-pixel is red transmission sub-pixel, described second Transmission sub-pixel is green transmissive sub-pixel, described 3rd Transmission sub-pixel is blue transmission sub-pixel, described first Polymer Dispersed Liquid Crystal is red polymer dispersed LCD, described second Polymer Dispersed Liquid Crystal is green polymer dispersed LCD, and described terpolymer dispersed LCD is blue polymer dispersed LCD.
Concrete, described red polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and red two tropism's dyestuffs;
Described green polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and green two tropism's dyestuffs;
Described blue polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and blue two tropism's dyestuffs.
Concrete, described each pixel cell also comprises: the first reflective sub-pixel, second reflective sub-pixel, 3rd reflective sub-pixel, described first reflective sub-pixel is formed by the first Polymer Dispersed Liquid Crystal, described second reflective sub-pixel is formed by the second Polymer Dispersed Liquid Crystal, and described 3rd reflective sub-pixel is formed by terpolymer dispersed LCD; Wherein, the first substrate of described each reflective sub-pixel is provided with reflection horizon.
Preferably, described first reflective sub-pixel is red reflex sub-pixel, described second reflective sub-pixel is green reflective sub-pixel, described 3rd reflective sub-pixel is blue reflective sub-pixel, described first Polymer Dispersed Liquid Crystal is red polymer dispersed LCD, described second Polymer Dispersed Liquid Crystal is green polymer dispersed LCD, and described terpolymer dispersed LCD is blue polymer dispersed LCD.
Preferably, the refractive index forming the polymer dispersed liquid crystal layer of described reflective sub-pixel is less than the refractive index of the polymer dispersed liquid crystal layer forming described Transmission sub-pixel.
The present invention also provides a kind of liquid crystal display, comprises the display panels described in above-mentioned any one, and described liquid crystal display also comprises and the driving circuit one to one of the TFT on described display panels.
The present invention provides again a kind of method for making of display panels, comprises the following steps:
First substrate and second substrate form transparency electrode;
The described first substrate being formed with transparency electrode forms polymer dispersed liquid crystal layer, and described polymer dispersed liquid crystal layer is cured, form pixel region, described pixel region comprises multiple pixel cell, described each pixel cell comprises the first Transmission sub-pixel, the second Transmission sub-pixel, the 3rd Transmission sub-pixel, described first Transmission sub-pixel comprises the first polymer dispersed liquid crystal layer, described second Transmission sub-pixel comprises green second polymer dispersed liquid crystal layer, and described 3rd Transmission sub-pixel comprises terpolymer dispersing liquid crystal layer;
By involutory to the second substrate and described first substrate that are formed with transparency electrode, form display panels.
Preferably, described first Transmission sub-pixel is red transmission sub-pixel, described second Transmission sub-pixel is green transmissive sub-pixel, described 3rd Transmission sub-pixel is blue transmission sub-pixel, described first Polymer Dispersed Liquid Crystal is red polymer dispersed LCD, described second Polymer Dispersed Liquid Crystal is green polymer dispersed LCD, and described terpolymer dispersed LCD is blue polymer dispersed LCD.
Concrete, described on described first substrate printed polymeric dispersing liquid crystal layer, and described polymer dispersed liquid crystal layer be cured comprise:
Step a: form red polymer dispersing liquid crystal layer being describedly formed with on the first substrate of transparency electrode, in the subpixel area of each pixel region, and described red polymer dispersing liquid crystal layer is cured, form red sub-pixel;
Step b: form green polymer dispersing liquid crystal layer on the first substrate through step a, in the subpixel area of each pixel region, and be cured described green polymer dispersing liquid crystal layer, forms green sub-pixels;
Step c: form blue polymer dispersing liquid crystal layer on the first substrate through step b, in the subpixel area of each pixel region, and be cured described blue polymer dispersing liquid crystal layer, forms blue subpixels.
Concrete, described red polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and red two tropism's dyestuffs;
Described green polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and green two tropism's dyestuffs;
Described blue polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and blue two tropism's dyestuffs.
Concrete, described being cured described polymer dispersed liquid crystal layer comprises: by photopolymerization or hot polymerization is incompatible is cured polymer dispersed liquid crystal layer.
Accompanying drawing explanation
The structural representation of the first display panels that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the second display panels that what Fig. 2 was the embodiment of the present invention provide;
The structural representation of a kind of liquid crystal display that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is the schematic flow sheet of the method for making of the display panels of the embodiment of the present invention.
Reference numeral
21 second substrates
22 first substrates
23 first transparency electrodes
24 second transparency electrodes
25 color display layer
251 first Transmission sub-pixel
252 second Transmission sub-pixel
253 the 3rd Transmission sub-pixel
254 first reflective sub-pixel
255 second reflective sub-pixel
256 the 3rd reflective sub-pixel
26 acrylic ester high molecular type matrixes
27 nematic liquid crystals
28 2 tropism's dyestuffs
29 reflection horizon
30TFT
31 backlights
32 reflector spaces
33 regional transmissions
34 driving circuits
Embodiment
For embodiments of the invention will be solved technical matters, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Embodiments of the invention provide a kind of display panels and preparation method thereof, liquid crystal display, the manufacture craft of display panels can not only be simplified, can solve in transflective liquid crystal display mode, the problem that the reflector space of display panels is different with the brightness of regional transmission simultaneously.
The structural representation of the display panels that Fig. 1 provides for the embodiment of the present invention.This liquid crystal panel comprises: first substrate 22, second substrate 21, the first transparency electrode 24 that first substrate is provided with, second substrate is provided with the second transparency electrode 23, color display layer 25 is provided with between first substrate and second substrate, color display layer 25 comprises multiple pixel cell, each pixel cell comprises the first Transmission sub-pixel 251, second Transmission sub-pixel 252 and the 3rd Transmission sub-pixel 253, first Transmission sub-pixel is preferably red transmission sub-pixel, first Transmission sub-pixel 251 comprises the first Polymer Dispersed Liquid Crystal PDLC (PolymerDispersedLiquidCrystal, Polymer Dispersed Liquid Crystal), the preferred red polymer dispersed LCD of first Polymer Dispersed Liquid Crystal.Second Transmission sub-pixel 252 comprises the second Polymer Dispersed Liquid Crystal, second Transmission sub-pixel 252 is preferably green transmissive sub-pixel, second Polymer Dispersed Liquid Crystal is preferably green PDLC, 3rd Transmission sub-pixel 253 comprises terpolymer dispersed LCD, 3rd Transmission sub-pixel is preferably blue transmission sub-pixel, and terpolymer dispersed LCD is preferably blue polymer dispersed LCD.Polymer Dispersed Liquid Crystal comprises nematic liquid crystal 27, acrylic ester high molecular type matrix 26 and two tropism's dyestuff 28, two tropism's dyestuffs and comprises redness, green and blueness three kinds.Pixel cell in this programme preferably includes redgreenblue pixel; but be not limited only to this three-color pixel; all combinations that can realize the color sub-pixel being mixed into quality white light all should be included in protection scope of the present invention; when adopting the sub-pixel of other colors, select the two tropism dyestuffs corresponding with sub-pixel colors can realize identical effect.Each sub-pixel is provided with a thin film transistor (TFT) TFT30, for controlling the liquid crystal deflection in the color display layer of each subpixel area.The transmitance of polymer dispersed liquid crystal layer increases along with the increase of voltage, and the polymer dispersed liquid crystal layer due to each subpixel area is drive, like this by regulate execute alive size can the transmitance of telomerized polymer dispersing liquid crystal layer.
This programme realizes traditional monitor by polymer dispersed liquid crystal layer and to prize the effect of rete and liquid crystal layer, eliminates the step of the color rete of independent making in original technology, simplifies the manufacture craft of display panels.
The embodiment of the present invention additionally provides a kind of display panels, as shown in Figure 2, this display panels comprises: first substrate 22, second substrate 21 and the color display layer 25 be arranged on first substrate 22, first substrate 22 is provided with reflector space 32 and regional transmission 31, corresponding, color display layer 25 comprises multiple pixel cell, each pixel cell comprises six sub-pixels, be respectively the first Transmission sub-pixel 251, second Transmission sub-pixel 252, 3rd transmitting blue sub-pixel 253, first reflective sub-pixel 254, second reflective sub-pixel 255, 3rd reflective sub-pixel 256.First Transmission sub-pixel 251 is preferably red transmission sub-pixel, first reflective sub-pixel 254 is preferably red reflex sub-pixel, second Transmission sub-pixel is preferably green transmissive sub-pixel, second reflective sub-pixel is preferably green reflective sub-pixel, 3rd Transmission sub-pixel is preferably blue transmission sub-pixel, and the 3rd reflective sub-pixel is preferably blue reflective sub-pixel; Color display layer 25 comprises Polymer Dispersed Liquid Crystal, first Transmission sub-pixel and the first reflective sub-pixel comprise the first Polymer Dispersed Liquid Crystal, second Transmission sub-pixel and the second reflective sub-pixel comprise the second Polymer Dispersed Liquid Crystal, and the 3rd Transmission sub-pixel and the 3rd reflective sub-pixel comprise terpolymer dispersed LCD.First Polymer Dispersed Liquid Crystal is preferably red polymer dispersed LCD, and the second Polymer Dispersed Liquid Crystal is preferably green polymer dispersed LCD, and terpolymer dispersed LCD is preferably blue polymer dispersed LCD.Pixel cell in this programme preferably includes redgreenblue pixel; but be not limited only to this three-color pixel; all combinations that can realize the color sub-pixel being mixed into quality white light all should be included in protection scope of the present invention; when adopting the sub-pixel of other colors, select the two tropism dyestuffs corresponding with sub-pixel colors can realize identical effect.
PDLC layer is made up of acrylic ester high molecular type matrix 26, nematic liquid crystal 27 and two tropism's dyestuffs 28, when first Transmission sub-pixel and the first reflective sub-pixel are red sub-pixel, the first Polymer Dispersed Liquid Crystal comprises acrylic ester high molecular type matrix, nematic liquid crystal and red two tropism's dyestuffs; When second Transmission sub-pixel and the second reflective sub-pixel are green sub-pixels, the second Polymer Dispersed Liquid Crystal comprises acrylic ester high molecular type matrix, nematic liquid crystal and green two tropism's dyestuffs; When 3rd Transmission sub-pixel and the 3rd reflective sub-pixel are blue subpixels, terpolymer dispersed LCD comprises acrylic ester high molecular type matrix, nematic liquid crystal and blue two tropism's dyestuffs.
Further, as shown in Figure 2, reflector space 32 comprises three reflective sub-pixel 254,255 and 256, reflector space 32 on first substrate is disposed with transparency electrode 24 and reflection horizon 29, reflection horizon 29 is provided with the Thin Film Transistor (TFT) (ThinFilmTransistor, TFT) 30 of each subpixel area corresponding; Regional transmission 33 also comprises three Transmission sub-pixel 251,252 and 253, and the regional transmission 33 on first substrate 22 is provided with transparency electrode 24, transparency electrode 24 is provided with the Thin Film Transistor (TFT) 30 of each subpixel area corresponding.Polymer dispersed liquid crystal layer correspondence one independently Thin Film Transistor (TFT) like this in each sub-pixel, the transmitance of polymer dispersed liquid crystal layer increases along with the increase of voltage, polymer dispersed liquid crystal layer due to each subpixel area is drive, like this by regulate execute alive size can the transmitance of telomerized polymer dispersing liquid crystal layer, therefore alive size is executed to regulate the colour balance in reflector space display by regulating, and improve the brightness of reflector space, thus the colour balance that realization shows at regional transmission and reflector space.
In the present embodiment, PDLC layer is made up of acrylic ester high molecular type matrix 26, nematic liquid crystal 27 and two tropism's dyestuffs 28, and wherein, two tropism's dyestuffs 28 include redness, blueness and green, correspondingly, red PDLC layer, blue PDLC layer and green PDLC layer is formed respectively.In the present embodiment, reflector space and regional transmission can be arranged by mode as shown in Figure 2, namely in a pixel, three Transmission sub-pixel are disposed adjacent, three reflective sub-pixel are disposed adjacent, also can be disposed adjacent according to a Transmission sub-pixel and a reflective sub-pixel, namely regional transmission and reflector space interval in units of sub-pixel is arranged.
The optical characteristics of PDLC depends on the effective refractive index of liquid crystal molecule to a great extent, that is, by the selection to liquid crystal molecule, can regulate the degree of the transmitted light of PDLC, reflected light and refract light.Therefore, for colored PDLC layer, can transmission as required, reflection and refracting condition, adopt the liquid crystal molecule with suitable effective refractive index, to realize good transmitance and reflectivity.In the embodiment of the present invention, adopt 3 kinds of colored PDLC layers containing two red, blue, green tropism's dyestuffs, each PDLC layer utilizes different TFT to carry out drive.When not executing alive, PDLC layer shows redness, blueness and green respectively.When applying saturation voltage, liquid crystal droplet arranges along with the direction of electric field, and each PDLC layer shows clear state.When applying voltage is less than saturation voltage, the transmitance of PDLC layer increases along with the increase of voltage, that is executes by regulating the transmitance that alive size can regulate PDLC layer; Because each PDLC layer is drive, regulate the applying voltage status of each TFT can demonstrate any color, therefore can save the color film that display panels is arranged, improve the transmitance of light.When no voltage is applied, the light launched at regional transmission backlight in the refraction of colored PDLC layer through, display dark-state, occurs to reflect at the outer light of reflector space and shows dark-state on colored PDLC layer.When applying voltage, refraction does not occur at the PDLC layer incident light of regional transmission and reflector space and reflects and directly transmit, so display clear state, two regions all show on state of.
In addition when not applying voltage, due to incident light regional transmission refraction and through, incident light reflector space through reflection again through, therefore the light path of the light of reflector space is greater than the light path of the light of regional transmission, if the refractive index of the colored PDLC layer of the colored PDLC layer of regional transmission and reflector space is equal, the imbalance will regional transmission and reflector space being caused to show like this.Therefore in the present embodiment, the colored PDLC layer of regional transmission can be different from the reflectivity of the colored PDLC layer of reflector space, the refractive index of the PDLC of reflector space is less than the refractive index of the PDLC of regional transmission, like this when not applying voltage, regional transmission has the colour display of higher transmitance and favorable luminance, simultaneously reflector space has good reflectivity and realizes good colour display, thus realizes the balance that regional transmission and reflector space show.
Display panels of the present invention, execute alive degree by adjustment and can demonstrate shades of colour by telomerized polymer dispersed LCD, save the color rete in display panels, simplify the manufacture craft of display panels, and the transmitance of light can be improved, solve the problem that the reflector space of display panels is different with the brightness of regional transmission.
Present invention also offers a kind of liquid crystal display, be illustrated in figure 3 the structural representation of liquid crystal display of the present invention, the liquid crystal display of the present embodiment comprises display panels as shown in Figure 2, also comprise the backlight 31 be arranged on first substrate 22, with the driving circuit 34 one to one of the TFT on display panels.
Below in conjunction with Fig. 3, liquid crystal display of the present invention is described further.As shown in Figure 3, liquid crystal display has second substrate 21 positioned opposite to each other and first substrate 22, second substrate 21 is provided with the first transparency electrode 23, first substrate 22 is provided with the second transparency electrode 24, second transparency carrier and is arranged with backlight 31.Color display layer 25 is provided with between second substrate 21 and first substrate 22.In the present embodiment, color display layer 25 comprises multiple pixel cell, and each pixel cell comprises the first transmission red sub-pixel 251, second Transmission sub-pixel 252, the 3rd Transmission sub-pixel 253, first reflective sub-pixel 254, second reflective sub-pixel 255 and the 3rd reflective sub-pixel 256.Wherein, color display layer 25 comprises colored PDLC, first Transmission sub-pixel 251 is preferably red transmission sub-pixel, first reflective sub-pixel 254 is preferably red reflex sub-pixel, second Transmission sub-pixel is preferably green transmissive sub-pixel, second reflective sub-pixel is preferably green reflective sub-pixel, and the 3rd Transmission sub-pixel is preferably blue transmission sub-pixel, and the 3rd reflective sub-pixel is preferably blue reflective sub-pixel; First Transmission sub-pixel and the first reflective sub-pixel comprise the first Polymer Dispersed Liquid Crystal, second Transmission sub-pixel and the second reflective sub-pixel comprise the second Polymer Dispersed Liquid Crystal, and the 3rd Transmission sub-pixel and the 3rd reflective sub-pixel comprise terpolymer dispersed LCD.First Polymer Dispersed Liquid Crystal is preferably red polymer dispersed LCD, and the second Polymer Dispersed Liquid Crystal is preferably green polymer dispersed LCD, and terpolymer dispersed LCD is preferably blue polymer dispersed LCD.Pixel cell in this programme preferably includes redgreenblue pixel; but be not limited only to this three-color pixel; all combinations that can realize the color sub-pixel being mixed into quality white light all should be included in protection scope of the present invention; when adopting the sub-pixel of other colors, select the two tropism dyestuffs corresponding with sub-pixel colors can realize identical effect.。
Wherein, first substrate 22 is divided into reflector space 32 and regional transmission 33, corresponding reflector space 32, in the second transparency electrode 24, is provided with a reflection horizon 29.In reflector space part, TFT30 is arranged on reflection horizon 29, and in regional transmission part, TFT30 is arranged in the second transparency electrode 24.
In the present embodiment, PDLC layer is made up of acrylic ester high molecular type matrix 26, nematic liquid crystal 27 and two tropism's dyestuffs 28, and wherein, two tropism's dyestuffs 28 include redness, blueness and green, correspondingly, red PDLC, blue PDLC and green PDLC is formed respectively.As shown in Figures 2 and 3, each pixel cell comprises the first transmission red sub-pixel 251, second Transmission sub-pixel 252, the 3rd Transmission sub-pixel 253, first reflective sub-pixel 254, second reflective sub-pixel 255 and the 3rd reflective sub-pixel 256.In the present embodiment, reflective sub-pixel and Transmission sub-pixel can be arranged by mode as shown in Figure 2, namely in a pixel, three Transmission sub-pixel are disposed adjacent, three reflective sub-pixel are disposed adjacent, also can be disposed adjacent according to a Transmission sub-pixel and a reflective sub-pixel, namely regional transmission and reflector space interval in units of sub-pixel is arranged.
The optical characteristics of PDLC depends on the refractive index of liquid crystal molecule to a great extent, that is, by the selection to liquid crystal molecule, can regulate the degree of the transmitted light of PDLC, reflected light and refract light.Therefore, for colored PDLC layer, can transmission as required, reflection and refracting condition, adopt the liquid crystal molecule with suitable effective refractive index, to realize good transmitance and reflectivity.In the embodiment of the present invention, adopt 3 kinds of colored PDLC layers containing two red, blue, green tropism's dyestuffs, each PDLC layer utilizes different TFT to carry out drive.When not executing alive, PDLC layer shows redness, blueness and green respectively.When applying saturation voltage, liquid crystal droplet arranges along with the direction of electric field, and each PDLC layer shows clear state.When applying voltage is less than saturation voltage, the transmitance of PDLC layer increases along with the increase of voltage, that is executes by regulating the transmitance that alive size can regulate PDLC layer; Because each PDLC layer is drive, regulate the applying voltage status of each TFT can demonstrate any color, therefore can save the color film that display panels is arranged, improve the transmitance of light.When no voltage is applied, the light launched at regional transmission backlight in the refraction of colored PDLC layer through, display dark-state, occurs to reflect at the outer light of reflector space and shows dark-state on colored PDLC layer.When applying voltage, refraction does not occur at the PDLC layer incident light of regional transmission and reflector space and reflects and directly transmit, so display clear state, two regions all show on state of.
In addition when not applying voltage, due to incident light regional transmission refraction and through, incident light reflector space through reflection again through, therefore the light path of the light of reflector space is greater than the light path of the light of regional transmission, if the refractive index of the colored PDLC layer of the colored PDLC layer of regional transmission and reflector space is equal, the imbalance will regional transmission and reflector space being caused to show like this.Therefore in the present embodiment, the colored PDLC layer of regional transmission is different from the reflectivity of the colored PDLC layer of reflector space, the refractive index of the PDLC of reflector space is less than the refractive index of the PDLC of regional transmission, like this when not applying voltage, regional transmission has the colour display of higher transmitance and favorable luminance, simultaneously reflector space has good reflectivity and realizes good colour display, thus realizes the balance that regional transmission and reflector space show.Particularly, the PDLC of reflector space can adopt effective refractive index be 0.16 nematic liquid crystal, and the PDLC of regional transmission can adopt effective refractive index be 0.20 nematic liquid crystal.
Liquid crystal display of the present invention, color display layer is there is between the first substrate and second substrate of display panels, color display layer comprises multiple pixel cell, each pixel cell comprises red sub-pixel, green sub-pixels and blue subpixels, red sub-pixel is formed by red polymer dispersed LCD, green sub-pixels is formed by green polymer dispersed LCD, blue subpixels is formed by blue polymer dispersed LCD, execute alive degree by adjustment and can demonstrate shades of colour by telomerized polymer dispersed LCD, therefore the color film that display panels is arranged can be saved, simplify the manufacture craft of display panels, and the transmitance of light can be improved, solve the problem that the reflector space of display panels is different with the brightness of regional transmission.
Fig. 4 is the schematic flow sheet of the method for making of the display panels of the embodiment of the present invention, and as shown in Figure 1, the present embodiment comprises:
Step 101: form transparency electrode on first substrate and second substrate;
There is provided a substrate as first substrate, as glass substrate, this substrate adopts patterning processes to prepare transparency conducting layer, form transparency electrode, the preferred ITO material of this transparent electrode material.For semi-transmission semi-reflection LCD, in this step, be also included in the formation reflection horizon, reflective sub-pixel region of each pixel cell.
Step 102: form polymer dispersed liquid crystal layer on the first substrate through step 101, and polymer dispersed liquid crystal layer is cured, form pixel region, pixel region comprises multiple pixel cell, each pixel cell comprises the first Transmission sub-pixel, the second Transmission sub-pixel, the 3rd Transmission sub-pixel, described first Transmission sub-pixel comprises the first polymer dispersed liquid crystal layer, described second Transmission sub-pixel comprises green second polymer dispersed liquid crystal layer, and described 3rd Transmission sub-pixel comprises terpolymer dispersing liquid crystal layer; This step can specifically comprise the steps:
Step a: form the first polymer dispersed liquid crystal layer on the first substrate through step 101, in the subpixel area of each pixel region, and the second polymer dispersed liquid crystal layer is cured, form the first Transmission sub-pixel;
Step b: form the second polymer dispersed liquid crystal layer on the first substrate through step a, in the subpixel area of each pixel region, and the second polymer dispersed liquid crystal layer is cured, form the second Transmission sub-pixel;
Step c: form terpolymer dispersing liquid crystal layer on the first substrate through step b, in the subpixel area of each pixel region, and be cured terpolymer dispersing liquid crystal layer, forms the 3rd sub-pixel.
When there is the display panels of reflective sub-pixel in preparation embodiment 2, first can prepare reflection horizon on substrate, then prepare each sub-pixel according to step a ~ step c.
The mode forming Polymer Dispersed Liquid Crystal on the first substrate in above-mentioned steps preferably adopts printing process, can pass through photopolymerization or the incompatible realization of hot polymerization to the solidification of Polymer Dispersed Liquid Crystal.Meanwhile, the order of step a ~ step c can arbitrarily exchange, and all can reach same effect.
The first Transmission sub-pixel in this step is preferably red sub-pixel, second Transmission sub-pixel is preferably green sub-pixels, 3rd Transmission sub-pixel is preferably blue subpixels, corresponding, the preferred red polymer dispersed LCD of first Polymer Dispersed Liquid Crystal, second Polymer Dispersed Liquid Crystal is preferably green polymer dispersed LCD, and terpolymer dispersed LCD is preferably blue polymer dispersed LCD.
Step 103: by involutory with the first substrate through step 102 for the second substrate being formed with transparency electrode, form display panels.
Further, when the first Polymer Dispersed Liquid Crystal is red polymer dispersed LCD, the first Polymer Dispersed Liquid Crystal comprises acrylic ester high molecular type matrix, nematic liquid crystal and red two tropism's dyestuffs; When the second Polymer Dispersed Liquid Crystal is green polymer dispersed LCD, the second Polymer Dispersed Liquid Crystal comprises acrylic ester high molecular type matrix, nematic liquid crystal and green two tropism's dyestuffs; When terpolymer dispersed LCD is blue polymer dispersed LCD, terpolymer dispersed LCD blue polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and blue two tropism's dyestuffs.
Pixel cell in this programme preferably includes redgreenblue pixel; but be not limited only to this three-color pixel; all combinations that can realize the color sub-pixel being mixed into quality white light all should be included in protection scope of the present invention; when adopting the sub-pixel of other colors, select the two tropism dyestuffs corresponding with sub-pixel colors can realize identical effect.
Adopt this scheme can directly utilize liquid crystal layer to realize conventional liquid crystal to prize the function of rete, therefore the color film that display panels is arranged can be saved, simplify the manufacture craft of display panels, and the transmitance of light can be improved, solve the problem that the reflector space of display panels is different with the brightness of regional transmission.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. a display panels, comprise first substrate, second substrate, be respectively formed at the transparency electrode on first substrate and second substrate, color display layer on the first substrate and thin film transistor (TFT) are set, it is characterized in that, described color display layer comprises multiple pixel cell, each described pixel cell comprises the first Transmission sub-pixel, second Transmission sub-pixel and the 3rd Transmission sub-pixel, described first Transmission sub-pixel is formed by the first Polymer Dispersed Liquid Crystal, described second Transmission sub-pixel is formed by the second Polymer Dispersed Liquid Crystal, described 3rd Transmission sub-pixel is formed by terpolymer dispersed LCD,
Each described pixel cell also comprises: the first reflective sub-pixel, second reflective sub-pixel, 3rd reflective sub-pixel, described first reflective sub-pixel is formed by the first Polymer Dispersed Liquid Crystal, described second reflective sub-pixel is formed by the second Polymer Dispersed Liquid Crystal, and described 3rd reflective sub-pixel is formed by terpolymer dispersed LCD; Wherein, the first substrate of each described reflective sub-pixel is provided with reflection horizon, polymer dispersed liquid crystal layer correspondence one the independently Thin Film Transistor (TFT) in each sub-pixel;
Wherein, the color of described first Polymer Dispersed Liquid Crystal, the second Polymer Dispersed Liquid Crystal, terpolymer dispersed LCD is different, cooperatively interacts and realizes colored display.
2. display panels according to claim 1, it is characterized in that, described first Transmission sub-pixel is red transmission sub-pixel, described second Transmission sub-pixel is green transmissive sub-pixel, described 3rd Transmission sub-pixel is blue transmission sub-pixel, described first Polymer Dispersed Liquid Crystal is red polymer dispersed LCD, and described second Polymer Dispersed Liquid Crystal is green polymer dispersed LCD, and described terpolymer dispersed LCD is blue polymer dispersed LCD.
3. display panels according to claim 2, is characterized in that, described red polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and red two tropism's dyestuffs;
Described green polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and green two tropism's dyestuffs;
Described blue polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and blue two tropism's dyestuffs.
4. display panels according to claim 1, it is characterized in that, described first reflective sub-pixel is red reflex sub-pixel, described second reflective sub-pixel is green reflective sub-pixel, described 3rd reflective sub-pixel is blue reflective sub-pixel, described first Polymer Dispersed Liquid Crystal is red polymer dispersed LCD, and described second Polymer Dispersed Liquid Crystal is green polymer dispersed LCD, and described terpolymer dispersed LCD is blue polymer dispersed LCD.
5. display panels according to claim 1, is characterized in that, the refractive index forming the polymer dispersed liquid crystal layer of described reflective sub-pixel is less than the refractive index of the polymer dispersed liquid crystal layer forming described Transmission sub-pixel.
6. a liquid crystal display, is characterized in that, comprises the display panels according to any one of claim 1-5, and described liquid crystal display also comprises and the driving circuit one to one of the TFT on described display panels.
7. a method for making for display panels, is characterized in that, comprising:
First substrate and second substrate form transparency electrode respectively;
The described first substrate being formed with transparency electrode forms polymer dispersed liquid crystal layer, and described polymer dispersed liquid crystal layer is cured, form pixel region, described pixel region comprises multiple pixel cell, each described pixel cell comprises the first Transmission sub-pixel, second Transmission sub-pixel, 3rd Transmission sub-pixel, described first Transmission sub-pixel comprises the first polymer dispersed liquid crystal layer, described second Transmission sub-pixel comprises green second polymer dispersed liquid crystal layer, described 3rd Transmission sub-pixel comprises terpolymer dispersing liquid crystal layer, each described pixel cell also comprises: the first reflective sub-pixel, second reflective sub-pixel, 3rd reflective sub-pixel, described first reflective sub-pixel is formed by the first Polymer Dispersed Liquid Crystal, described second reflective sub-pixel is formed by the second Polymer Dispersed Liquid Crystal, described 3rd reflective sub-pixel is formed by terpolymer dispersed LCD, wherein, the first substrate of each described reflective sub-pixel is provided with reflection horizon, polymer dispersed liquid crystal layer correspondence one the independently Thin Film Transistor (TFT) in each sub-pixel,
By involutory to the second substrate and described first substrate that are formed with transparency electrode, form display panels;
Wherein, the color of described first Polymer Dispersed Liquid Crystal, the second Polymer Dispersed Liquid Crystal, terpolymer dispersed LCD is different, cooperatively interacts and realizes colored display.
8. the method for making of display panels according to claim 7, it is characterized in that, described first Transmission sub-pixel is red transmission sub-pixel, described second Transmission sub-pixel is green transmissive sub-pixel, described 3rd Transmission sub-pixel is blue transmission sub-pixel, described first Polymer Dispersed Liquid Crystal is red polymer dispersed LCD, and described second Polymer Dispersed Liquid Crystal is green polymer dispersed LCD, and described terpolymer dispersed LCD is blue polymer dispersed LCD.
9. the method for making of display panels according to claim 8, is characterized in that, printed polymeric dispersing liquid crystal layer on described first substrate, and is cured described polymer dispersed liquid crystal layer and comprises:
Step a: form red polymer dispersing liquid crystal layer being describedly formed with on the first substrate of transparency electrode, in the subpixel area of each pixel region, and described red polymer dispersing liquid crystal layer is cured, form red sub-pixel;
Step b: form green polymer dispersing liquid crystal layer on the first substrate through step a, on the clear subpixel region of each pixel region, and be cured described green polymer dispersing liquid crystal layer, forms green sub-pixels;
Step c: form blue polymer dispersing liquid crystal layer on the first substrate through step b, on the clear subpixel region of each pixel region, and be cured described blue polymer dispersing liquid crystal layer, forms blue subpixels.
10. the method for making of display panels according to claim 8, is characterized in that, described red polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and red two tropism's dyestuffs;
Described green polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and green two tropism's dyestuffs;
Described blue polymer dispersing liquid crystal layer comprises acrylic ester high molecular type matrix, nematic liquid crystal and blue two tropism's dyestuffs.
The method for making of 11. display panels according to claim 7, is characterized in that, described being cured described polymer dispersed liquid crystal layer comprises:
By photopolymerization or hot polymerization is incompatible is cured polymer dispersed liquid crystal layer.
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| CN201210068963.6A CN102707481B (en) | 2012-03-15 | 2012-03-15 | Display panels and preparation method thereof, liquid crystal display |
| PCT/CN2012/085876 WO2013135077A1 (en) | 2012-03-15 | 2012-12-04 | Liquid crystal display panel, manufacturing method and liquid crystal display thereof |
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| CN102707481B (en) * | 2012-03-15 | 2016-01-13 | 京东方科技集团股份有限公司 | Display panels and preparation method thereof, liquid crystal display |
| CN102914899B (en) * | 2012-10-12 | 2015-02-04 | 京东方科技集团股份有限公司 | Double-sided display device |
| CN104793378A (en) * | 2014-01-17 | 2015-07-22 | 北京众智同辉科技股份有限公司 | Driving method for polymer-dispersed liquid crystal membrane |
| CN105204216A (en) * | 2015-10-29 | 2015-12-30 | 深圳市华星光电技术有限公司 | PDLC (polymer dispersed liquid crystal) display panel and production method thereof and liquid crystal display unit |
| CN105242441B (en) * | 2015-11-09 | 2019-02-01 | 深圳市华星光电技术有限公司 | The production method and PDLC display device of PDLC display device |
| CN105573006B (en) * | 2016-03-02 | 2019-04-05 | 南京大学 | A kind of Electronic Paper of voxel structure |
| CN108807459A (en) * | 2017-04-28 | 2018-11-13 | 昆山国显光电有限公司 | A kind of Organnic electroluminescent device and preparation method thereof |
| CN107633822B (en) * | 2017-10-27 | 2020-06-05 | 上海天马微电子有限公司 | Display device and driving method thereof |
| CN108511508B (en) | 2018-06-14 | 2021-01-26 | 京东方科技集团股份有限公司 | OLED display panel and display |
| EP3743767A4 (en) * | 2018-07-02 | 2021-08-11 | Hewlett-Packard Development Company, L.P. | Screen privacy devices with alternating polymer-dispersed liquid crystal bands |
| CN110133904A (en) * | 2019-05-29 | 2019-08-16 | 深圳市光合显示科技有限公司 | Multi-steady state liquid crystal display part, preparation method and driving method |
| CN110632782B (en) * | 2019-09-29 | 2022-03-11 | 京东方科技集团股份有限公司 | Reflective display panel, manufacturing method thereof and reflective display device |
| CN113325622B (en) * | 2021-05-14 | 2022-07-22 | 北京科技大学 | Polymer liquid crystal film with customized colorful patterns and preparation method thereof |
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| CN102707481B (en) * | 2012-03-15 | 2016-01-13 | 京东方科技集团股份有限公司 | Display panels and preparation method thereof, liquid crystal display |
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| CN101120280A (en) * | 2005-02-16 | 2008-02-06 | 索尼德国有限责任公司 | A method of forming an array of polymer dispersed liquid crystal cells |
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