CN102798926B - Light guide plate, light guide plate assembly and light guide plate manufacturing method - Google Patents
Light guide plate, light guide plate assembly and light guide plate manufacturing method Download PDFInfo
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- CN102798926B CN102798926B CN201210291295.3A CN201210291295A CN102798926B CN 102798926 B CN102798926 B CN 102798926B CN 201210291295 A CN201210291295 A CN 201210291295A CN 102798926 B CN102798926 B CN 102798926B
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- 239000005264 High molar mass liquid crystal Substances 0.000 claims abstract description 47
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims description 46
- 230000004888 barrier function Effects 0.000 claims description 40
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims description 30
- 239000000178 monomer Substances 0.000 claims description 16
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- 230000005540 biological transmission Effects 0.000 description 33
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- 238000010586 diagram Methods 0.000 description 5
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- 238000002834 transmittance Methods 0.000 description 4
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Abstract
The invention provides a light guide plate, a light guide plate assembly and a light guide plate manufacturing method, and relates to the field of liquid crystal display manufacturing, and aims to improve transparency of the light guide plate and the light guide plate assembly. The light guide plate comprises a first transparent substrate and a second transparent substrate, wherein the first transparent substrate comprises a first transparent sub-substrate, a second transparent sub-substrate, and a wide wave reflection high polymer liquid crystal membrane arranged between the first transparent sub-substrate and the second transparent sub-substrate; the second transparent substrate is parallel to the first transparent substrate in a certain distance; the second transparent substrate comprises a third transparent sub-substrate and a fourth transparent sub-substrate; a first transparent electrode is arranged on one side of the third transparent sub-substrate close to the fourth transparent sub-substrate; a second transparent electrode is arranged on one side of the fourth transparent sub-substrate close to the third transparent sub-substrate; and a PDLC (polymer dispersed liquid crystal) membrane is formed between the first transparent electrode and the second transparent electrode. The invention is suitable for the liquid crystal display device using the liquid guide plate or the light guide plate assembly.
Description
Technical field
The present invention relates to liquid crystal display and manufacture field, relate in particular to a kind of light guide plate, light guide plate assembly and method for manufacturing light guide plate.
Background technology
Existing liquid crystal display relies on backlight that light is provided mostly, but because backlight provides pointolite or line source conventionally, liquid crystal display display frame needs the support of area source, so light guide plate becomes vitals of liquid crystal display, pointolite or line source that it can provide backlight change area source into.Along with user increases day by day for the interest of liquid crystal display, in recent years, user is except wishing LCD product, as liquid crystal display can make more frivolous outside, the transparency of LCD product is required also day by day to increase.
But the light guide plate in liquid crystal display is generally rice white, and light transmission is poor, thus use the liquid crystal display of this light guide plate cannot reach good light transmission, so the transparent visual effect of user's request cannot be provided, so, just restricted the transparence development of liquid crystal display.
Summary of the invention
Embodiments of the invention provide a kind of light guide plate, light guide plate assembly and method for manufacturing light guide plate, can improve the transparency of light guide plate and light guide plate assembly.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, provide a kind of light guide plate, comprising:
The first transparency carrier, described the first transparency carrier comprises the first transparent submounts, the second transparent submounts, and is formed at the wide wave reflection Polymer Liquid Crystals Composites Membrane between described the first transparent submounts and described the second transparent submounts;
With described the first transparency carrier opposing parallel setting and there is the second transparency carrier of certain distance, described the second transparency carrier comprises the 3rd transparent submounts, the 4th transparent submounts, on described the 3rd transparent submounts, be provided with the first transparency electrode near described the 4th transparent submounts one side, on described the 4th transparent submounts, be provided with the second transparency electrode near described the 3rd transparent submounts one side, between described the first transparency electrode and described the second transparency electrode, be formed with pdlc film.
On the one hand, provide a kind of light guide plate assembly, comprising:
Above-mentioned light guide plate;
Be arranged at least one light source between the first transparency carrier and second transparency carrier of described light guide plate.
On the other hand, provide a kind of manufacture method of light guide plate, comprising:
Between the first transparent submounts in the first transparency carrier and the second transparent submounts, carry out light processing and thermal treatment formation wide wave reflection Polymer Liquid Crystals Composites Membrane by the monomer to photopolymerizable group liquid crystal liquid crystal;
In the second transparency carrier, on the 3rd transparent submounts, near the 4th transparent submounts one side, the first transparency electrode is set;
In the second transparency carrier, on the 4th transparent submounts, near the 3rd transparent submounts one side, the second transparency electrode is set;
Between described the first transparency electrode and described the second transparency electrode, form the macromolecule pdlc film parallel with liquid crystal by writing material information;
By described the first transparency carrier and described the second transparency carrier opposing parallel and there is certain distance setting.
A kind of light guide plate provided by the invention, light guide plate assembly and method for manufacturing light guide plate, light guide plate comprises opposing parallel setting and has the first transparency carrier and second transparency carrier of certain distance, and the first transparency carrier comprises the wide wave reflection Polymer Liquid Crystals Composites Membrane forming between the first transparent submounts, the second transparent submounts and two submounts; The second transparency carrier comprises the 3rd transparent submounts, the 4th transparent submounts, is respectively arranged with the first transparency electrode and the second transparency electrode on the inside surface of the 3rd transparent submounts and the 4th transparent submounts, and is formed with pdlc film between two transparency electrodes.So, because the first transparency electrode and the second transparency electrode provide electric field, the second transparency carrier is by light reflection to the first transparency carrier receiving, the light of the first transparency carrier transmission or reflection receivable, wherein, left-handed light is become to dextrorotation light when the second transparency carrier reflection ray, dextrorotation light becomes left-handed light.Because the first transparency carrier meeting transmission is left-handed or dextrorotation light, reflection dextrorotation or left-handed light, and all light that the second transparency carrier reflection receivable arrives, make light multiple reflections between the first transparency carrier and the second transparency carrier, thereby the pointolite that light source is sent or line source are converted to from the area source of the first transparency carrier outgoing through multiple reflections; And utilize and be formed with pdlc film the second transparency carrier and replace coloured reflector, thereby make the transmittance of light guide plate and light guide plate assembly better improve the transparency of light guide plate and light guide plate assembly.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The light conducting plate structure schematic diagram that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 does not execute alive light conducting plate structure schematic diagram for what the embodiment of the present invention provided;
Fig. 3 executes alive light conducting plate structure schematic diagram for what the embodiment of the present invention provided;
Fig. 4 executes alive light conducting plate structure schematic diagram for what another embodiment of the present invention provided;
The light guide plate assembly structural representation that Fig. 5 provides for the embodiment of the present invention;
The light guide plate assembly structural representation that Fig. 6 provides for another embodiment of the present invention;
The light guide plate assembly structural representation that Fig. 7 provides for further embodiment of this invention;
Fig. 8 executes alive light guide plate assembly structural representation for what the embodiment of the present invention provided;
Light guide plate preparation method's schematic flow sheet that Fig. 9 provides for the embodiment of the present invention.
Main element symbol description:
1: light guide plate assembly; 10: light guide plate; 101: the first transparency carriers; 1011: the first transparent submounts; 1012: the second transparent submounts; 1013: wide wave reflection Polymer Liquid Crystals Composites Membrane; 102: the second transparency carriers; 1021: the three transparent submounts; 1022: the four transparent submounts; 1023: the first transparency electrodes; 1024: the second transparency electrodes; 1025,125:PDLC film/H-PDLC film; 11: light source; 12: light barrier; 121: the first sub-light barriers; 122: the second sub-light barriers; 123: the three transparency electrodes; 124: the four transparency electrodes.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that: terms such as " inside surfaces " in the present invention just describes with reference to accompanying drawing, is not limited to term.Can find out with reference to accompanying drawing, the inside surface in the present invention refers to the surface between the first transparency carrier and the second transparency carrier, or the surface between the first transparency electrode and the second transparency electrode, or surface between the first sub-light barrier and the second sub-light barrier.
First technical scheme of the present invention, a kind of light guide plate, comprising:
The first transparency carrier, described the first transparency carrier comprises the first transparent submounts, the second transparent submounts, and is formed at the wide wave reflection Polymer Liquid Crystals Composites Membrane between described the first transparent submounts and described the second transparent submounts;
With described the first transparency carrier opposing parallel setting and there is the second transparency carrier of certain distance, described the second transparency carrier comprises the 3rd transparent submounts, the 4th transparent submounts, on described the 3rd transparent submounts, be provided with the first transparency electrode near described the 4th transparent submounts one side, on described the 4th transparent submounts, be provided with the second transparency electrode near described the 3rd transparent submounts one side, between described the first transparency electrode and described the second transparency electrode, be formed with pdlc film.
Second technical scheme of the present invention, on the basis of first technical scheme, described pdlc film is H-PDLC film.
, on the basis of above-mentioned arbitrary technical scheme, in described wide wave reflection Polymer Liquid Crystals Composites Membrane, there is cholesteric liquid crystal in the 3rd technical scheme of the present invention.
The 4th technical scheme of the present invention, on the basis of the 3rd technical scheme, the cholesteric liquid crystal existing in described wide wave reflection Polymer Liquid Crystals Composites Membrane is left-handed cholesteric liquid crystal or the cholesteric liquid crystal of dextrorotation.
The 5th technical scheme of the present invention, a kind of light guide plate assembly, comprising: the light guide plate described in above-mentioned arbitrary technical scheme and be arranged at least one light source between the first transparency carrier and second transparency carrier of described light guide plate.
The 6th technical scheme of the present invention, on the basis of technique scheme five,
Described light source is two, is separately positioned on the two ends of described light guide plate;
Described light guide plate assembly also comprises:
Be arranged on described light source outside, connect the light barrier of described the first transparency carrier and described the second transparency carrier, described light barrier receives and reflects the light that described light source sends.
The 7th technical scheme of the present invention, on the basis of technique scheme six,
Described light barrier comprises the first sub-light barrier, the second sub-light barrier, on described the first sub-light barrier, be provided with the 3rd transparency electrode near described the second sub-light barrier one side, on described the second sub-light barrier, be provided with the 4th transparency electrode near described the first sub-light barrier one side, between described the 3rd transparency electrode and described the 4th transparency electrode, be formed with pdlc film.
The 8th technical scheme of the present invention, a kind of manufacture method of light guide plate, comprising:
In the first transparency carrier, between the first transparent submounts and the second transparent submounts, carry out light processing and thermal treatment formation wide wave reflection Polymer Liquid Crystals Composites Membrane by the monomer to photopolymerizable group liquid crystal liquid crystal;
In the second transparency carrier, on the 3rd transparent submounts, near the 4th transparent submounts one side, the first transparency electrode is set;
In the second transparency carrier, on the 4th transparent submounts, near the 3rd transparent submounts one side, the second transparency electrode is set;
Between described the first transparency electrode and described the second transparency electrode, form the macromolecule pdlc film parallel with liquid crystal by writing material information;
By described the first transparency carrier and described the second transparency carrier opposing parallel and there is certain distance setting.
The of the present invention ten technical scheme, on the basis of the 8th or the 9th technical scheme, in the first transparency carrier, between the first transparent submounts and the second transparent submounts, undertaken by the monomer to photopolymerizable group liquid crystal liquid crystal that light is processed and thermal treatment formation wide wave reflection Polymer Liquid Crystals Composites Membrane comprises:
In the described monomer with photopolymerizable group liquid crystal liquid crystal between the first transparent submounts described in described the first transparency carrier and described the second transparent submounts, add light trigger;
Under preset temperature, described monomer is carried out to UV-irradiation, so that the temperature changing away from cholesteric liquid crystal in the described monomer of ultraviolet light one side and smectic A phase liquid crystal is raise, on described the first transparency carrier, obtain the brilliant Jie's phase liquid crystal of distortion and the cholesteric liquid crystal film that coexists, the brilliant Jie's phase liquid crystal of described distortion and the cholesteric liquid crystal film that coexists is described wide wave reflection high molecule liquid crystal.
As shown in Figure 1, the light guide plate 10 that the embodiment of the present invention provides, comprising:
In the first transparency carrier 101, include the first transparent submounts 1011, the second transparent submounts 1012, and be formed at the wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 between the first transparent submounts 1011 and the second transparent submounts 1012, the left-handed light of the first transparency carrier 101 transmission, reflection dextrorotation light, or, transmission dextrorotation light, reflect left-handed light.
It should be noted that, wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 can reflect the light of wavelength in a big way.Because wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 is to be carried out light processing, thermal treatment, utilized cholesteric liquid crystal to prepare by the monomer to photopolymerizable group liquid crystal liquid crystal, wherein, cholesteric liquid crystal can form by adding chipal compounds in nematic liquid crystal, therefore wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 has the characteristic of cholesteric liquid crystal, and wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 has polarizability.Only have the light contrary with the cholesteric liquid crystal hand of spiral just by high molecule liquid crystal, only have the light identical with the cholesteric liquid crystal hand of spiral to be reflected.
Further, due to the wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 forming, some has cured, but most of still in liquid crystal state, there is certain mobility, therefore for fixing wide wave reflection Polymer Liquid Crystals Composites Membrane 1013, wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 need to be formed between the first transparent submounts 1011 and the second transparent submounts 1012, wherein, the first transparent submounts 1011 and the second transparent submounts 1012 can be conventional glass substrate or resin substrate, flexible base, boards etc.
Exemplary, if wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 is to be prepared by left-handed cholesteric liquid crystal, first transparency carrier 101 so with wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 to the light transmission dextrorotation light receiving, reflect left-handed light; If wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 is prepared by the cholesteric liquid crystal of dextrorotation, there is so the first transparency carrier 101 of wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 to receiving the left-handed light of light transmission, reflection dextrorotation light.
With the first transparency carrier 101 opposing parallel settings and there is the second transparency carrier 102 of certain distance, the second transparency carrier 102 comprises the 3rd transparent submounts 1021, the 4th transparent submounts 1022, on the 3rd transparent submounts 1021, be provided with the first transparency electrode 1023 near the 4th transparent submounts 1,022 one sides, on the 4th transparent submounts 1022, be provided with the second transparency electrode 1024 near the 3rd transparent submounts 1,021 one sides, between the first transparency electrode 1023 and the second transparency electrode 1024, be formed with PDLC (Polymer Dispersed Liquid Crystal, high polymer dispersed liquid crystal) film 1025.Wherein, light is by the second transparency carrier 102 reflex times, and left-handed light becomes dextrorotation light, and dextrorotation light becomes left-handed light.
Further, be arranged on the 3rd transparent submounts 1021 near the 4th transparent submounts 1,022 one sides, after the first transparency electrode 1023 of the 3rd transparent submounts 1021 inside surfaces (in figure, inside surface refers to the lower surface of the 3rd transparent submounts 1021 in orientation) and the second transparency electrode 1024 energisings, form electric field, for pdlc film 1025 provides voltage, to make the light of the second transparency carrier 102 reflection receivables that are formed with pdlc film 1025, wherein, the second transparency electrode 1024 is arranged at the inside surface (in figure, inside surface refers to the upper surface of the 4th transparent submounts 1022 in orientation) of the 4th transparent submounts 1022.
Preferably, pdlc film 1025 can be H-PDLC (Holography-Polymer Dispersed Liquid Crystal, holographic high polymer dispersed liquid crystal) film, on the second transparency carrier 102, form H-PDLC film, can better realize the reflecting effect of the second transparency carrier 102, the embodiment of the present invention illustrates with H-PDLC film, but does not do any restriction with this.
It should be noted that, if the pdlc film of the second transparency carrier 102 1025 is H-PDLC film, can, according to the difference to H-PDLC membrane material writing information mode, form the membrane structure of two kinds of orientations, one be macromolecule and liquid crystal layer perpendicular to substrate surface, form transmission-type H-PDLC film; Another kind is that macromolecule and liquid crystal layer are parallel to substrate surface, forms reflective H-PDLC film.Because second transparency carrier 102 with H-PDLC film is for replacing reflecting plate, light is reflected, so can obtain reflective H-PDLC film to complete the reflection to receiving light by controlling writing information mode, and change light sense of rotation at reflex time, left-handed light is become to dextrorotation light, and dextrorotation light becomes left-handed light.
Further, prepared by left-handed cholesteric liquid crystal with wide wave reflection Polymer Liquid Crystals Composites Membrane 1013, the cholesteric liquid crystal transmission dextrorotation light existing in wide wave reflection Polymer Liquid Crystals Composites Membrane 1013, reflect left-handed light, the the first transparency carrier 101 transmission dextrorotation light that make to have wide wave reflection Polymer Liquid Crystals Composites Membrane 1013, reflecting left-handed light is example; Describe as H-PDLC film as example taking the pdlc film forming on the second transparency carrier 102, but do not do any restriction with this.
As shown in Figure 2, if the first transparency electrode 1023 and the second transparency electrode 1024 do not apply voltage on H-PDLC film 1025 (pdlc film that in Fig. 2, Reference numeral 1025 represents is H-PDLC film herein), for example use the liquid crystal display of light guide plate 10 in closed condition, while not forming electric field between the first transparency electrode 1023 and the second transparency electrode 1024, the first transparency electrode 1023 and the second transparency electrode 1024 do not apply voltage to H-PDLC film 1025, so without impressed voltage in the situation that, the intermembranous of H-PDLC film 1025 can not form regular electric field, the direction of optic axis of liquid crystal is random, present disordered state, the effective refractive index n of H-PDLC film 1025
0not with the refractive index n of polymkeric substance
pcoupling, transmission is incident on the light (in Fig. 2, arrow represents) on H-PDLC film 1025, now H-PDLC film 1025 keeps light transmission state, makes light guide plate 10 can keep good light transmission, and then makes to use the liquid crystal apparatus transparency such as liquid crystal display of light guide plate 10 to improve.
As shown in Figure 3, if the first transparency electrode 103 and the second transparency electrode 104 apply voltage on H-PDLC film 1025 (pdlc film that in Fig. 3, Reference numeral 1025 represents is H-PDLC film herein), for example use the liquid crystal display of light guide plate 10 in opening, while forming electric field between the first transparency electrode 1023 and the second transparency electrode 1024, the first transparency electrode 1023 and the second transparency electrode 1024 apply voltage to H-PDLC film 1025, so in the situation that having applied external voltage, in H-PDLC film 1025, the optical axis of liquid crystal is perpendicular to the surface alignment of H-PDLC film 1025, be that liquid crystal optic axis direction is consistent with direction of an electric field.The effective refractive index n of H-PDLC film 1025
0refractive index n with polymkeric substance
pbasic coupling, without obvious interface, form uniform medium, reflection is incident on the light (in Fig. 3, arrow represents) on H-PDLC film 1025, it should be noted that, as to be located at light on H-PDLC film 1025 can be light of sending of natural light, the light source that also can be arranged on light guide plate 10 arbitrary places etc.
Further, as shown in Figure 4, if the first transparency electrode 1023 and the second transparency electrode 1024 apply voltage on H-PDLC film 1025 (pdlc film that in Fig. 4, Reference numeral 1025 represents is H-PDLC film herein), as use the liquid crystal display of light guide plate 10 in opening, first transparency electrode 1023 and second transparency electrode 1024 of liquid crystal display to light guide plate 10 applies voltage, and when light source is provided, when H-PDLC film 1025 is subject to voltage that the first transparency electrode 1023 and the second transparency electrode 1024 apply and is reflective condition, the light of reflection receivable, the light of light source transmitting comprises left-handed light (in Fig. 4, dotted arrow represents) and dextrorotation light (in Fig. 4, solid arrow represents), after this light incides on H-PDLC film 1025, left-handed light becomes dextrorotation light through reflection, the dextrorotation light inciding on H-PDLC film 1025 becomes left-handed light after reflection, light after reflection incides by left-handed cholesteric liquid crystal and prepares on wide wave reflection Polymer Liquid Crystals Composites Membrane 1013, because cholesteric liquid crystal is left hand direction, therefore wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 transmission dextrorotation light, reflect left-handed light.The left-handed rotation being reflected arrives after H-PDLC film 1025 again, becomes dextrorotation light through reflection, reflexes on wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 and goes out through the first transparency carrier 101 transmissions.The light that transmission is not gone out repeatedly carries out the switching of reflection and left-handed rotation and right-handed rotation between H-PDLC film 1025 and wide wave reflection Polymer Liquid Crystals Composites Membrane 1013, until light all sees through wide wave reflection Polymer Liquid Crystals Composites Membrane 1013, linearly polarized light in linearly polarized light or natural light that light source provides is converted into by the plane polarized light of the first transparency carrier 101 outgoing, and then provides required area source to display panel.
It is worthy of note, because the light of the first transparency carrier 101 outgoing by light guide plate 10 is left-handed light or dextrorotation light, therefore use the liquid crystal indicator of light guide plate 10 not need lower polaroid is set again, and then simplified the structure that uses the liquid crystal indicator of light guide plate 10.
A kind of light guide plate 10 provided by the invention, the first transparency carrier 101 and the second transparency carrier 102, the first transparency carriers 101 that light guide plate 10 comprises opposing parallel setting and has a certain distance comprise the wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 forming between the first transparent submounts 1011, the second transparent submounts 1012 and two submounts; The second transparency carrier 102 comprises the 3rd transparent submounts 1021, the 4th transparent submounts 1022, on the inside surface of the 3rd transparent submounts 1021 and the 4th transparent submounts 1022, be respectively arranged with the first transparency electrode 1023 and the second transparency electrode 1024, and between two transparency electrodes, be formed with pdlc film 1025.So, because the first transparency electrode 1023 and the second transparency electrode 1024 provide electric field, the second transparency carrier 102 is by light reflection to the first transparency carrier 101 receiving, the light of the first transparency carrier 101 transmissions or reflection receivable, wherein, left-handed light is become to dextrorotation light when the second transparency carrier 102 reflection ray, dextrorotation light becomes left-handed light.Because the first transparency carrier 101 meeting transmissions are left-handed or dextrorotation light, reflection dextrorotation or left-handed light, and all light that the second transparency carrier 102 reflection receivables arrive, make light multiple reflections between the first transparency carrier 101 and the second transparency carrier 102, thereby the pointolite that light source is sent or line source are converted to from the area source of the first transparency carrier 101 outgoing through multiple reflections; And utilize the second transparency carrier 102 that is formed with pdlc film 1025 to replace coloured reflector, thereby make the transmittance of light guide plate 10 better improve the transparency of light guide plate.
As shown in Figure 5, the light guide plate assembly 1 that the embodiment of the present invention provides, comprising:
The light guide plate 10 that above-described embodiment provides; And be arranged at least one light source 11 between the first transparency carrier 101 and second transparency carrier 102 of light guide plate 10.Wherein, the outside transmission of the first transparency carrier 101 with to the light that the second transparency carrier 102 reflects, the second transparency carrier 102 provides to the first transparency carrier 101 reflection sources 11, make light by the outside transmission of the first transparency carrier 101.
It is worthy of note, because the light transmission of light source 11 is not high, in order to make the transparent effect of light guide plate assembly 1 not be subject to the impact of light source 11, light source 11 can be arranged between the first transparency carrier 101 and the second transparency carrier 102 near light guide plate 10 marginal positions, as a light source 11 can be set respectively at the two ends of light guide plate, and be symmetrical arranged this two light sources 11, to make guide tabula rasa 10 that uniform light is provided.It should be noted that, the method to set up of light source 11 is not limited to the situation shown in Fig. 5, can be also that LED (Light Emitting Diode, light emitting diode) light source is laid on the second transparency carrier 102 so that light etc. to be provided.
As shown in Figure 6, the light guide plate assembly 1 that the embodiment of the present invention provides, also comprises:
Be arranged on light source 11 outsides, connect the light barrier 12 of the first transparency carrier 101 and the second transparency carrier 102, the light that light barrier 12 receives and reflection source 11 sends.It should be noted that, can adopt the light barrier 12 that is coated with reflectorized material, also can be as shown in Figure 7, the light barrier 12 that employing comprises the first sub-light barrier 121, the second sub-light barrier 122, wherein, on the first sub-light barrier 121, be provided with on the sub-light barrier 122 of the 3rd transparency electrode 123, the second and be provided with between the 4th transparency electrode 124, the three transparency electrodes 123 and the 4th transparency electrode 124 and be formed with pdlc film 125 near the first sub-light barrier 121 1 sides near the second sub-light barrier 122 1 sides.Light barrier 12 receives and reflection source 11 sends light to the first transparency carrier 101 or the second transparency carrier 102; Wherein, light is by light barrier 12 reflex times, and left-handed light becomes dextrorotation light, and dextrorotation light becomes left-handed light.Wherein, the pdlc film 125 in light barrier 12 can be the H-PDLC film exemplifying in above-described embodiment, does not repeat them here.
It should be noted that, light barrier 12 can be the semicircle shown in Fig. 6,7, so that the light that reflection source 11 provides more uniformly, but not doing any restriction with this, light barrier 12 can also be set to rectangle or half elliptic etc.Light barrier 12 can be connected with the second transparency carrier 102, or be connected with the first transparency carrier 101, or simultaneously with the first transparency carrier 101 and the second transparency carrier 102, also can neither be connected also and not be connected with the second transparency carrier 102 with the first transparency carrier 101, not do any restriction with diagram connected mode.
Further, as shown in Figure 7, the 3rd transparency electrode 123 and the 4th transparency electrode 124 are that H-PDLC film 125 (pdlc film that in Fig. 7, Reference numeral 125 represents is H-PDLC film herein) provides voltage, form electric field with the first transparency electrode 101, to make the light of light barrier 12 reflection receivables that are formed with H-PDLC film 125, between the 3rd transparency electrode 123 and the 4th transparency electrode 124, form positive negative electric field voltage is provided, make in the time not applying voltage, in light barrier 12, H-PDLC film 125 presents scattering states, keep transparent, in the time applying voltage, present reflection state.
As shown in Figure 8, between H-PDLC film 1025, the 3rd transparency electrode 123 and the 4th transparency electrode 124, be formed with H-PDLC film 125 and describe as example to be formed with between the first transparency electrode 1023 and the second transparency electrode 1024, but not as restriction.
When light source 11 is opened, the first transparency electrode 1023 and the second transparency electrode 1024 apply voltage to H-PDLC film 1025, the 3rd transparency electrode 123 and the 4th transparency electrode 124 apply voltage to H-PDLC film 125, when H-PDLC film 1025 is applied to voltage, the voltage influence that H-PDLC film 1025 is applied, be reflective condition, the light that light source 11 is sent reflects, when H-PDLC film 125 is applied to voltage, the voltage influence that H-PDLC film 125 is applied, be reflective condition, the light that light source 11 is sent reflects.The light that light source 11 sends comprises left-handed rotation (in Fig. 8, dotted arrow represents) and right-handed rotation (in Fig. 8, solid arrow represents), the left-handed rotation inciding on H-PDLC film 1025 and H-PDLC film 125 changes right-handed rotation into after reflection, the right-handed rotation of inciding on H-PDLC film 1025 and H-PDLC film 125 changes left-handed rotation into after reflection, the light being reflected by H-PDLC film 1025 and H-PDLC film 125, and the light that sends of light source 11 incides by left-handed cholesteric liquid crystal and prepares on Polymer Liquid Crystals Composites Membrane 1013, because the hand of spiral of cholesteric liquid crystal is left-handed, therefore to transmission dextrorotation light, reflect left-handed light.So, the left-handed rotation being reflected by wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 is reflected through H-PDLC film 1025 and H-PDLC film 125 again, be converted to dextrorotation light, be reflected back to again wide wave reflection Polymer Liquid Crystals Composites Membrane 1013, transmission is gone out, the light that light source 11 sends carries out the switching of reflection and left-handed rotation and right-handed rotation between H-PDLC film 1025 and H-PDLC film 125 and wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 always, until light all sees through wide wave reflection Polymer Liquid Crystals Composites Membrane 1013, penetrate by the first transparency carrier 101 again, be converted into area source with pointolite or line source that light source 11 is provided.
Wherein, in Fig. 7,8, middle Reference numeral 1025 is H-PDLC film herein, and 125 is H-PDLC film herein.H-PDLC film just describes for example, does not do any restriction.
A kind of light guide plate assembly 1 provided by the invention, light guide plate assembly 1 comprises light source 11 and light guide plate 10, the first transparency carrier 101 and the second transparency carrier 102, the first transparency carriers 101 that light guide plate 10 comprises opposing parallel setting and has a certain distance comprise the wide wave reflection Polymer Liquid Crystals Composites Membrane 1013 forming between the first transparent submounts 1011, the second transparent submounts 1012 and two submounts; The second transparency carrier 102 comprises the 3rd transparent submounts 1021, the 4th transparent submounts 1022, on the inside surface of the 3rd transparent submounts 1021 and the 4th transparent submounts 1022, be respectively arranged with the first transparency electrode 1023 and the second transparency electrode 1024, and between two transparency electrodes, be formed with pdlc film 1025.So, because the first transparency electrode 1023 and the second transparency electrode 1024 provide electric field, the second transparency carrier 102 is by light reflection to the first transparency carrier 101 receiving, the light of the first transparency carrier 101 transmissions or reflection receivable, wherein, left-handed light is become to dextrorotation light when the second transparency carrier 102 reflection ray, dextrorotation light becomes left-handed light.Because the first transparency carrier 101 meeting transmissions are left-handed or dextrorotation light, reflection dextrorotation or left-handed light, and all light that the second transparency carrier 102 reflection receivables arrive, make light multiple reflections between the first transparency carrier 101 and the second transparency carrier 102, thereby the pointolite that light source is sent or line source are converted to from the area source of the first transparency carrier 101 outgoing through multiple reflections; And utilize and be formed with pdlc film 1,025 second transparency carriers 102 and replace coloured reflector, thereby make light guide plate 10 and transmittance better improve the transparency of light guide plate.
As shown in Figure 9, the manufacture method of the light guide plate that the embodiment of the present invention provides, comprising:
S101, in the first transparency carrier, between the first transparent submounts and the second transparent submounts, carry out light processing by the monomer to photopolymerizable group liquid crystal liquid crystal and thermal treatment forms wide wave reflection Polymer Liquid Crystals Composites Membrane.
Exemplary, in the first transparency carrier, between the first transparent submounts and the second transparent submounts, light trigger is added in the monomer with photopolymerizable group liquid crystal liquid crystal, then under preset temperature, monomer is carried out to UV-irradiation, as can be at the cholesteric phase higher than liquid crystal and smectic A phase transition temperature, but carry out UV-irradiation in 10 degree higher than described transition temperature, as, if transition temperature is 300 °, between 300 ° to 310 °, choose arbitrary temperature and carry out UV-irradiation, raise with the temperature that makes to change mutually away from cholesteric phase in the monomer of ultraviolet light one side and smectic A, obtain that distortion is brilliant to be situated between mutually and the cholesteric phase film that coexists, this distortion crystalline substance is situated between mutually and cholesteric phase coexists, and film is exactly wide wave reflection high molecule liquid crystal, there is left-handed characteristic or the dextrorotation characteristic of cholesteric liquid crystal.So, the wide wave reflection Polymer Liquid Crystals Composites Membrane of formation has the characteristic of cholesteric liquid crystal, can the left-handed light of transmission, and reflection dextrorotation light; Or transmission dextrorotation light, reflects left-handed light.It should be noted that, all comprise left-handed light and dextrorotation light in light, wide wave reflection Polymer Liquid Crystals Composites Membrane can be by left-handed light transmission, right-handed rotation line reflection in the light receiving, or, the transmission of dextrorotation light, left-handed rotation line reflection.
S102, in the second transparency carrier, on the 3rd transparent submounts, the first transparency electrode is set near the 4th transparent submounts one side.
S103, in the second transparency carrier, on the 4th transparent submounts, the second transparency electrode is set near the 3rd transparent submounts one side.
S104, between the first transparency electrode and the second transparency electrode, form the macromolecule pdlc film parallel with liquid crystal by writing material information.
Preferably, because H-PDLC film is better to the reflecting properties of light, penetrability is also more superior, and therefore PDLC is preferably H-PDLC film.According to the difference to H-PDLC material writing information mode, can form the membrane structure of two kinds of orientations, one be macromolecule and liquid crystal layer perpendicular to substrate surface, form transmission-type H-PDLC; Another kind is that macromolecule and liquid crystal layer are parallel to substrate surface, forms reflective H-PDLC.For replacing reflecting plate owing to being formed with the second transparency carrier of H-PDLC, realization reflection, so can obtain reflective H-PDLC by controlling writing information mode, light is reflected.
It should be noted that, there is not sequencing in S101, S102, S103 and S104, can carry out successively, as S101, S102, S103, S104 carry out in turn, can also carry out simultaneously, can also carry out by transpose, as carried out in turn according to S102, S103, S104, S101, and the execution sequence of S102 and S103 can be put upside down, do not do any restriction herein.
S105, by the first transparency carrier and the second transparency carrier opposing parallel and there is certain distance setting.
The left-handed light of the first transparency carrier transmission, reflection dextrorotation light; Or transmission dextrorotation light, reflects left-handed light; The second transparency carrier receives and light to the first transparency carrier reflection source transmitting or the reflection of the first transparency carrier, and wherein, light is by the second transparency carrier reflex time, and left-handed light becomes dextrorotation light, and dextrorotation light becomes left-handed light.
The light guide plate 10 of preparing by this method for manufacturing light guide plate can, for above-described embodiment, not repeat them here.
Method for manufacturing light guide plate provided by the invention, light guide plate comprises opposing parallel setting and has the first transparency carrier and second transparency carrier of certain distance, and the first transparency carrier comprises the wide wave reflection Polymer Liquid Crystals Composites Membrane forming between the first transparent submounts, the second transparent submounts and two submounts; The second transparency carrier comprises the 3rd transparent submounts, the 4th transparent submounts, is respectively arranged with the first transparency electrode and the second transparency electrode on the inside surface of the 3rd transparent submounts and the 4th transparent submounts, and is formed with pdlc film between two transparency electrodes.So, because the first transparency electrode and the second transparency electrode provide electric field, the second transparency carrier is by light reflection to the first transparency carrier receiving, the light of the first transparency carrier transmission or reflection receivable, wherein, left-handed light is become to dextrorotation light when the second transparency carrier reflection ray, dextrorotation light becomes left-handed light.Because the first transparency carrier meeting transmission is left-handed or dextrorotation light, reflection dextrorotation or left-handed light, and all light that the second transparency carrier reflection receivable arrives, make light multiple reflections between the first transparency carrier and the second transparency carrier, thereby the pointolite that light source is sent or line source are converted to from the area source of the first transparency carrier outgoing through multiple reflections; And utilize and be formed with pdlc film the second transparency carrier and replace coloured reflector, thereby make the transmittance of light guide plate and light guide plate assembly better improve the transparency of light guide plate and light guide plate assembly.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (9)
1. a light guide plate, is characterized in that, comprising:
The first transparency carrier, described the first transparency carrier comprises the first transparent submounts, the second transparent submounts, and be formed at the wide wave reflection Polymer Liquid Crystals Composites Membrane with polarizability between described the first transparent submounts and described the second transparent submounts, in described wide wave reflection Polymer Liquid Crystals Composites Membrane, there is cholesteric liquid crystal;
With described the first transparency carrier opposing parallel setting and there is the second transparency carrier of certain distance, described the second transparency carrier comprises the 3rd transparent submounts, the 4th transparent submounts, on described the 3rd transparent submounts, be provided with the first transparency electrode near described the 4th transparent submounts one side, on described the 4th transparent submounts, be provided with the second transparency electrode near described the 3rd transparent submounts one side, between described the first transparency electrode and described the second transparency electrode, be formed with the pdlc film with reflex.
2. light guide plate according to claim 1, is characterized in that, described pdlc film is H-PDLC film.
3. light guide plate according to claim 1, is characterized in that,
The cholesteric liquid crystal existing in described wide wave reflection Polymer Liquid Crystals Composites Membrane is left-handed cholesteric liquid crystal or the cholesteric liquid crystal of dextrorotation.
4. a light guide plate assembly, is characterized in that, comprising:
Light guide plate described in claims 1 to 3 any one;
Be arranged at least one light source between the first transparency carrier and second transparency carrier of described light guide plate.
5. light guide plate assembly according to claim 4, is characterized in that,
Described light source is two, is separately positioned on the two ends of described light guide plate;
Described light guide plate assembly also comprises:
Be arranged on described light source outside, connect the light barrier of described the first transparency carrier and described the second transparency carrier.
6. light guide plate assembly according to claim 5, is characterized in that,
Described light barrier comprises the first sub-light barrier, the second sub-light barrier, on described the first sub-light barrier, be provided with the 3rd transparency electrode near described the second sub-light barrier one side, on described the second sub-light barrier, be provided with the 4th transparency electrode near described the first sub-light barrier one side, between described the 3rd transparency electrode and described the 4th transparency electrode, be formed with pdlc film.
7. a manufacture method for light guide plate, is characterized in that, comprising:
In the first transparency carrier, between the first transparent submounts and the second transparent submounts, undertaken by the monomer to photopolymerizable group liquid crystal liquid crystal that light is processed and thermal treatment formation has the wide wave reflection Polymer Liquid Crystals Composites Membrane of polarizability, in described wide wave reflection Polymer Liquid Crystals Composites Membrane, have cholesteric liquid crystal;
In the second transparency carrier, on the 3rd transparent submounts, near the 4th transparent submounts one side, the first transparency electrode is set;
In the second transparency carrier, on the 4th transparent submounts, near the 3rd transparent submounts one side, the second transparency electrode is set;
Between described the first transparency electrode and described the second transparency electrode, form the macromolecule pdlc film with reflex parallel with liquid crystal by writing material information;
By described the first transparency carrier and described the second transparency carrier opposing parallel and there is certain distance setting.
8. the manufacture method of light guide plate according to claim 7, is characterized in that, described pdlc film is H-PDLC film.
9. the manufacture method of light guide plate according to claim 7, it is characterized in that, in the first transparency carrier, between the first transparent submounts and the second transparent submounts, undertaken by the monomer to photopolymerizable group liquid crystal liquid crystal that light is processed and thermal treatment formation wide wave reflection Polymer Liquid Crystals Composites Membrane comprises:
In the described monomer with photopolymerizable group liquid crystal liquid crystal between the first transparent submounts described in described the first transparency carrier and described the second transparent submounts, add light trigger;
Under preset temperature, described monomer is carried out to UV-irradiation, so that the temperature changing away from cholesteric liquid crystal in the described monomer of ultraviolet light one side and smectic A phase liquid crystal is raise, on described the first transparency carrier, obtain the brilliant Jie's phase liquid crystal of distortion and the cholesteric liquid crystal film that coexists, the brilliant Jie's phase liquid crystal of described distortion and the cholesteric liquid crystal film that coexists is described wide wave reflection high molecule liquid crystal.
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| JP6602695B2 (en) * | 2016-03-01 | 2019-11-06 | 株式会社ジャパンディスプレイ | Display device |
| CN105860995B (en) * | 2016-04-19 | 2019-01-22 | 京东方科技集团股份有限公司 | A kind of composition, liquid crystal display device and preparation method thereof |
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| CN101281269A (en) * | 2008-03-24 | 2008-10-08 | 北京科技大学 | Method for preparing LCD polarized sheet with wide wave reflection characteristic |
| JP2010157475A (en) * | 2009-01-05 | 2010-07-15 | Sony Corp | Illuminating device and display device |
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