CN102798926A - 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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- CN102798926A CN102798926A CN2012102912953A CN201210291295A CN102798926A CN 102798926 A CN102798926 A CN 102798926A CN 2012102912953 A CN2012102912953 A CN 2012102912953A CN 201210291295 A CN201210291295 A CN 201210291295A CN 102798926 A CN102798926 A CN 102798926A
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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 LCD and make the field, relate in particular to a kind of LGP, light guide plate assembly and method for manufacturing light guide plate.
Background technology
Existing LCD relies on backlight that light is provided mostly; But because backlight provides pointolite or line source usually; The liquid crystal display displays picture is the support of demand side light source then; So LGP becomes vitals of LCD, it can change pointolite or the line source that backlight provides into area source.Along with the user increases for the interest of LCD day by day, in recent years, the user is except hoping LCD product, as LCD can make more frivolous outside, the transparency of LCD product is required also to increase day by day.
But the LGP in the LCD is generally rice white; And light transmission is relatively poor, thus use the LCD of this LGP can't reach good light transmission, so the transparent visual effect of user's request can't be provided; So, just restricted the transparence development of LCD.
Summary of the invention
Embodiments of the invention provide a kind of LGP, light guide plate assembly and method for manufacturing light guide plate, can improve the transparency of LGP and light guide plate assembly.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, a kind of LGP is provided, comprises:
First transparency carrier, said first transparency carrier comprise the first transparent submounts, the second transparent submounts, and are formed at the wide wave reflection high molecule liquid crystal film between the said first transparent submounts and the said second transparent submounts;
With the said first transparency carrier opposing parallel setting and have second transparency carrier of certain distance; Said second transparency carrier comprises the 3rd transparent submounts, the 4th transparent submounts; Be provided with first transparency electrode near the said the 4th transparent submounts one side on the said the 3rd transparent submounts; Be provided with second transparency electrode near the said the 3rd transparent submounts one side on the said the 4th transparent submounts, be formed with pdlc film between said first transparency electrode and said second transparency electrode.
On the one hand, a kind of light guide plate assembly is provided, comprises:
Above-mentioned LGP;
Be arranged on first transparency carrier of said LGP and at least one light source between second transparency carrier.
On the other hand, a kind of manufacturing method of light conducting board is provided, comprises:
Between the first transparent submounts in first transparency carrier and the second transparent submounts, form wide wave reflection high molecule liquid crystal film through the monomer that has the photopolymerizable group liquid crystal liquid crystal being carried out optical processing and thermal treatment;
In second transparency carrier, near the 4th transparent submounts one side first transparency electrode is set on the 3rd transparent submounts;
In second transparency carrier, near the 3rd transparent submounts one side second transparency electrode is set on the 4th transparent submounts;
Between said first transparency electrode and said second transparency electrode, form the macromolecule pdlc film parallel with liquid crystal through writing material information;
With said first transparency carrier and the said second transparency carrier opposing parallel and have the certain distance setting.
A kind of LGP provided by the invention, light guide plate assembly and method for manufacturing light guide plate; Comprise the opposing parallel setting in the LGP and have first transparency carrier and second transparency carrier of certain distance, first transparency carrier comprises the wide wave reflection high molecule liquid crystal film that forms between the first transparent submounts, the second transparent submounts and two submounts; Second transparency carrier comprises the 3rd transparent submounts, the 4th transparent submounts, is respectively arranged with first transparency electrode and 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 first transparency electrode and second transparency electrode provide electric field; Second transparency carrier reflexes to first transparency carrier with the light that receives; The light that the first transparency carrier transmission or reflection receive, wherein, during the second transparency carrier reflection ray with left-handed light become dextrorotation light, dextrorotation light becomes left-handed light.Because first transparency carrier meeting transmission is left-handed or dextrorotation light, reflection dextrorotation or left-handed light; And all light that the reflection of second transparency carrier receives; Make light between first transparency carrier and second transparency carrier, repeatedly reflect, thereby pointolite or the line source that light source sends converted into from the area source of the first transparency carrier outgoing through repeatedly reflecting; And utilize and to be formed with pdlc film second transparency carrier and to replace coloured reflector, thereby make the better transparency of raising LGP and light guide plate assembly of transmittance of LGP and light guide plate assembly.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The light conducting plate structure synoptic diagram that Fig. 1 provides for the embodiment of the invention;
The light conducting plate structure synoptic diagram that does not apply voltage that Fig. 2 provides for the embodiment of the invention;
The light conducting plate structure synoptic diagram that applies voltage that Fig. 3 provides for the embodiment of the invention;
The light conducting plate structure synoptic diagram that applies voltage that Fig. 4 provides for another embodiment of the present invention;
The light guide plate assembly structural representation that Fig. 5 provides for the embodiment of the 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;
The light guide plate assembly structural representation that applies voltage that Fig. 8 provides for the embodiment of the invention;
The LGP preparation method schematic flow sheet that Fig. 9 provides for the embodiment of the invention.
The main element symbol description:
1: light guide plate assembly; 10: LGP; 101: the first transparency carriers; 1011: the first transparent submounts; 1012: the second transparent submounts; 1013: wide wave reflection high molecule liquid crystal film; 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
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Need to prove: terms such as " inside surfaces " among the present invention just describes with reference to accompanying drawing, is not limited to term.Can find out that with reference to accompanying drawing the inside surface among the present invention is meant the surface between first transparency carrier and second transparency carrier, or the surface between first transparency electrode and second transparency electrode, or the surface between the first sub-light barrier and the second sub-light barrier.
First technical scheme of the present invention, a kind of LGP comprises:
First transparency carrier, said first transparency carrier comprise the first transparent submounts, the second transparent submounts, and are formed at the wide wave reflection high molecule liquid crystal film between the said first transparent submounts and the said second transparent submounts;
With the said first transparency carrier opposing parallel setting and have second transparency carrier of certain distance; Said second transparency carrier comprises the 3rd transparent submounts, the 4th transparent submounts; Be provided with first transparency electrode near the said the 4th transparent submounts one side on the said the 3rd transparent submounts; Be provided with second transparency electrode near the said the 3rd transparent submounts one side on the said the 4th transparent submounts, be formed with pdlc film between said first transparency electrode and said second transparency electrode.
Second technical scheme of the present invention, on the basis of first technical scheme, said pdlc film is the H-PDLC film.
On the basis of above-mentioned arbitrary technical scheme, there is cholesteric liquid crystal in the 3rd technical scheme of the present invention in the said wide wave reflection high molecule liquid crystal film.
The 4th technical scheme of the present invention, on the basis of the 3rd technical scheme, the cholesteric liquid crystal that exists in the said wide wave reflection high molecule liquid crystal film is the 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 comprises: the described LGP of above-mentioned arbitrary technical scheme and be arranged on first transparency carrier of said LGP and at least one light source between second transparency carrier.
The 6th technical scheme of the present invention, on the basis of technique scheme five,
Said light source is two, is separately positioned on the two ends of said LGP;
Said light guide plate assembly also comprises:
Be arranged on the said light source outside, connect the light barrier of said first transparency carrier and said second transparency carrier, said light barrier reception is also reflected the light that said light source sends.
The 7th technical scheme of the present invention, on the basis of technique scheme six,
Said light barrier comprises the first sub-light barrier, the second sub-light barrier; Be provided with the 3rd transparency electrode near said second sub-light barrier one side on the said first sub-light barrier; Be provided with the 4th transparency electrode near said first sub-light barrier one side on the said second sub-light barrier, be formed with pdlc film between said the 3rd transparency electrode and said the 4th transparency electrode.
The 8th technical scheme of the present invention, a kind of manufacturing method of light conducting board comprises:
In first transparency carrier, form wide wave reflection high molecule liquid crystal film through the monomer that has the photopolymerizable group liquid crystal liquid crystal being carried out optical processing and thermal treatment between the first transparent submounts and the second transparent submounts;
In second transparency carrier, near the 4th transparent submounts one side first transparency electrode is set on the 3rd transparent submounts;
In second transparency carrier, near the 3rd transparent submounts one side second transparency electrode is set on the 4th transparent submounts;
Between said first transparency electrode and said second transparency electrode, form the macromolecule pdlc film parallel with liquid crystal through writing material information;
With said first transparency carrier and the said second transparency carrier opposing parallel and have the certain distance setting.
The of the present invention ten technical scheme; On the basis of the 8th or the 9th technical scheme, in first transparency carrier, comprise through the monomer that has the photopolymerizable group liquid crystal liquid crystal being carried out optical processing and thermal treatment formation wide wave reflection high molecule liquid crystal film between the first transparent submounts and the second transparent submounts:
Said between the first transparent submounts described in said first transparency carrier and the said second transparent submounts has in the monomer of photopolymerizable group liquid crystal liquid crystal and adds light trigger;
Under preset temperature, said monomer is carried out UV-irradiation; So that away from cholesteric liquid crystal in the said monomer of ultraviolet light one side and the smectic A temperature rising of liquid crystal transformation mutually; On said first transparency carrier, obtain twisting brilliant Jie's phase liquid crystal and cholesteric liquid crystal coexistence film, brilliant Jie's phase liquid crystal of said distortion and cholesteric liquid crystal coexistence film are said wide wave reflection high molecule liquid crystal.
LGP 10 as shown in Figure 1, that the embodiment of the invention provides comprises:
Include first transparent submounts 1011, the second transparent submounts 1012 in first transparency carrier 101; And be formed at the wide wave reflection high molecule liquid crystal film 1013 between the first transparent submounts 1011 and the second transparent submounts 1012; The left-handed light of first transparency carrier, 101 transmissions, reflection dextrorotation light; Perhaps, transmission dextrorotation light, reflect left-handed light.
Need to prove that wide wave reflection high molecule liquid crystal film 1013 can reflect the light of wavelength in a big way.Because wide wave reflection high molecule liquid crystal film 1013 is through the monomer that has the photopolymerizable group liquid crystal liquid crystal is carried out optical processing, thermal treatment, utilizes cholesteric liquid crystal to prepare; Wherein, Cholesteric liquid crystal can form by adding chipal compounds in the nematic liquid crystal; Therefore wide wave reflection high molecule liquid crystal film 1013 has the characteristic of cholesteric liquid crystal, and promptly wide wave reflection high molecule liquid crystal film 1013 has polarizability.Have only the light opposite just through high molecule liquid crystal, have only the light identical to be reflected with the cholesteric liquid crystal hand of spiral with the cholesteric liquid crystal hand of spiral.
Further; Because some has cured the wide wave reflection high molecule liquid crystal film that forms 1013; But major part still is in liquid crystal state; Therefore promptly have certain fluidity, for fixing wide wave reflection high molecule liquid crystal film 1013, need wide wave reflection high molecule liquid crystal film 1013 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 glass substrate or resin substrate, the flexible base, boards of using always etc.
Exemplary, if wide wave reflection high molecule liquid crystal film 1013 is to be prepared by left-handed cholesteric liquid crystal, has light transmission dextrorotation light that 101 pairs of first transparency carriers of wide wave reflection high molecule liquid crystal film 1013 receive so, reflect left-handed light; If wide wave reflection high molecule liquid crystal film 1013 is prepared by the cholesteric liquid crystal of dextrorotation, 101 pairs of first transparency carriers that have wide wave reflection high molecule liquid crystal film 1013 so receive the left-handed light of light transmission, reflection dextrorotation light.
With the 101 opposing parallel settings of first transparency carrier and have second transparency carrier 102 of certain distance; Second transparency carrier 102 comprises the 3rd transparent submounts the 1021, the 4th transparent submounts 1022; Be provided with first transparency electrode 1023 near the 4th transparent submounts 1,022 one sides on the 3rd transparent submounts 1021; Be provided with second transparency electrode 1024 near the 3rd transparent submounts 1,021 one sides on the 4th transparent submounts 1022; Be formed with PDLC (Polymer Dispersed Liquid Crystal, high polymer dispersed liquid crystal) film 1025 between first transparency electrode 1023 and second transparency electrode 1024.Wherein, light is by 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; Promptly first transparency electrode 1023 of the 3rd transparent submounts 1021 inside surfaces (inside surface refers to the lower surface of the 3rd transparent submounts 1021 among the figure on the orientation) and second transparency electrode, 1024 energising backs form electric field; For pdlc film 1025 provides voltage; So that be formed with the light that second transparency carrier, 102 reflections of pdlc film 1025 receive, wherein, second transparency electrode 1024 is arranged at the inside surface (inside surface refers to the upper surface of the 4th transparent submounts 1022 among the figure on the 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 forms the H-PDLC film on second transparency carrier 102, can better realize the reflecting effect of second transparency carrier 102; The embodiment of the invention illustrates with the H-PDLC film, but does not do any qualification with this.
Need to prove; If the pdlc film 1025 of second transparency carrier 102 is the H-PDLC film, can form the membrane structure of two kinds of orientations according to difference to H-PDLC membrane material writing information mode; A kind of 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 having second transparency carrier 102 of H-PDLC film is to be used to replace reflecting plate; Light is reflected; So can obtain reflective H-PDLC film to accomplish through control writing information mode to receiving the reflection of light; And, left-handed light being become dextrorotation light in reflex time change light sense of rotation, dextrorotation light becomes left-handed light.
Further; Prepare by left-handed cholesteric liquid crystal with wide wave reflection high molecule liquid crystal film 1013; The cholesteric liquid crystal transmission dextrorotation light that exists in the wide wave reflection high molecule liquid crystal film 1013; Reflect left-handed light, feasible first transparency carrier, 101 transmission dextrorotation light with wide wave reflection high molecule liquid crystal film 1013, reflecting left-handed light is example; Pdlc film to form on second transparency carrier 102 is that the H-PDLC film is that example describes, but does not do any qualification with this.
As shown in Figure 2; If first transparency electrode 1023 and second transparency electrode 1024 do not apply voltage on H-PDLC film 1025 (pdlc film of Reference numeral 1025 representatives is the H-PDLC film herein among Fig. 2), for example use the LCD of LGP 10 to be in closed condition, when not forming electric field between first transparency electrode 1023 and second transparency electrode 1024; First transparency electrode 1023 and second transparency electrode 1024 do not apply voltage to H-PDLC film 1025; Under the situation of no impressed voltage, the intermembranous of H-PDLC film 1025 can not form electric field clocklike so, and the direction of optic axis of liquid crystal at 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 (arrow is represented among Fig. 2) on the H-PDLC film 1025; This moment, H-PDLC film 1025 maintenance light transmission states made LGP 10 can keep good light transmittance, and then made the liquid crystal apparatus transparencies such as LCD of using LGP 10 improve.
As shown in Figure 3; If first transparency electrode 103 and second transparency electrode 104 apply voltage on H-PDLC film 1025 (pdlc film of Reference numeral 1025 representatives is the H-PDLC film herein among Fig. 3); For example use the LCD of LGP 10 to be in opening; When forming electric field between first transparency electrode 1023 and second transparency electrode 1024, first transparency electrode 1023 and 1024 pairs of H-PDLC films 1025 of second transparency electrode apply voltage, so under the situation that has applied external voltage; The optical axis of liquid crystal is arranged perpendicular to the surface of H-PDLC film 1025 in the H-PDLC film 1025, and promptly the 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; There is not obvious interface; Constituted uniform medium; Reflection is incident on the light (arrow is represented among Fig. 3) on the H-PDLC film 1025, need to prove, as is located at light on the H-PDLC film 1025 and can is natural light, also can be arranged on light that the light source at LGP 10 arbitrary places sends etc.
Further; As shown in Figure 4; If first transparency electrode 1023 and second transparency electrode 1024 apply voltage on H-PDLC film 1025 (pdlc film of Reference numeral 1025 representatives is the H-PDLC film herein among Fig. 4), be in opening, LCD like the LCD of use LGP 10 first transparency electrode 1023 and second transparency electrode 1024 of LGP 10 are applied voltage, and when light source is provided; When H-PDLC film 1025 receives voltage that first transparency electrode 1023 and second transparency electrode 1024 apply and is reflective condition; The light that reflection receives, the light of light emitted comprises left-handed light (dotted arrow is represented among Fig. 4) and dextrorotation light (solid arrow is represented among Fig. 4), after this light incides on the H-PDLC film 1025; Left-handed light becomes dextrorotation light through reflection; The dextrorotation light that incides on the H-PDLC film 1025 becomes left-handed light after reflecting, light reflected incides by left-handed cholesteric liquid crystal and prepares on the wide wave reflection high molecule liquid crystal film 1013, because cholesteric liquid crystal is a left hand direction; Therefore wide wave reflection high molecule liquid crystal film 1013 transmission dextrorotation light reflect left-handed light.After the left-handed rotation that is reflected arrives H-PDLC film 1025 once more, become dextrorotation light, reflex on the wide wave reflection high molecule liquid crystal film 1013 through first transparency carrier 101 transmissions and go out through reflection.The transmission light of going out does not reflect the switching with left-handed rotation and right-handed rotation repeatedly between H-PDLC film 1025 and wide wave reflection high molecule liquid crystal film 1013; All see through wide wave reflection high molecule liquid crystal film 1013 up to light; Make linearly polarized light or the linearly polarized light in the natural light that light source provides be converted into plane polarized light, and then required area source is provided to display panel through 101 outgoing of first transparency carrier.
It is worthy of note; Because the light of first transparency carrier, 101 outgoing through LGP 10 is left-handed light or dextrorotation light; Therefore use the liquid crystal indicator of LGP 10 not need polaroid is set down again, and then simplified the structure of using the liquid crystal indicator of LGP 10.
A kind of LGP 10 provided by the invention; First transparency carrier 101 and second transparency carrier, 102, the first transparency carriers 101 that comprise the opposing parallel setting in the LGP 10 and have a certain distance comprise the wide wave reflection high molecule liquid crystal film 1013 that forms between first transparent submounts 1011, the second transparent submounts 1012 and two submounts; Second transparency carrier 102 comprises the 3rd transparent submounts the 1021, the 4th transparent submounts 1022; Be respectively arranged with first transparency electrode 1023 and second transparency electrode 1024 on the inside surface of the 3rd transparent submounts 1021 and the 4th transparent submounts 1022, and be formed with pdlc film 1025 between two transparency electrodes.So; Because first transparency electrode 1023 and second transparency electrode 1024 provide electric field; Second transparency carrier 102 reflexes to first transparency carrier 101 with the light that receives; The light that 101 transmissions of first transparency carrier or reflection receive, wherein, during second transparency carrier, 102 reflection rays with left-handed light become dextrorotation light, dextrorotation light becomes left-handed light.Because the 101 meeting transmissions of first transparency carrier left-handed or dextrorotation light, reflection dextrorotation or left-handed light; And all light that 102 reflections of second transparency carrier receive; Make light in first transparency carrier 101 and 102 repeatedly reflections of second transparency carrier, thereby pointolite or the line source that light source sends converted into from the area source of first transparency carrier, 101 outgoing through repeatedly reflecting; And utilize second transparency carrier 102 that is formed with pdlc film 1025 to replace coloured reflector, thereby make the transmittance of LGP 10 better improve the transparency of LGP.
Light guide plate assembly 1 as shown in Figure 5, that the embodiment of the invention provides comprises:
The LGP 10 that the foregoing description provides; And be arranged on first transparency carrier 101 of LGP 10 and at least one light source 11 between second transparency carrier 102.Wherein, the 101 outside transmissions of first transparency carrier with to the reflection of second transparency carrier 102, second transparency carrier 102 to the light that first transparency carrier, 101 reflection sources 11 provide, make light by the 101 outside transmissions of first transparency carrier.
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 receive the influence of light source 11, can light source 11 be arranged between first transparency carrier 101 and second transparency carrier 102 near LGP 10 marginal positions, as a light source 11 can be set respectively at the two ends of LGP; And be symmetrical set this two light sources 11, so that uniform light is provided to LGP 10.Need to prove that the method to set up of light source 11 is not limited to situation shown in Figure 5, also can be that LED (Light Emitting Diode, light emitting diode) light source is tiled on second transparency carrier 102 so that light etc. to be provided.
Light guide plate assembly 1 as shown in Figure 6, that the embodiment of the invention provides also comprises:
Be arranged on light source 11 outsides, connect the light barrier 12 of first transparency carrier 101 and second transparency carrier 102, the light that light barrier 12 receives and reflection source 11 sends.Need to prove; Can adopt the light barrier 12 that is coated with reflectorized material, also can be as shown in Figure 7, adopt the light barrier 12 that comprises first sub-light barrier 121, the second sub-light barrier 122; Wherein, Be provided with on the 3rd transparency electrode 123, the second sub-light barriers 122 to be provided with between the 4th transparency electrode 124, the three transparency electrodes 123 and the 4th transparency electrode 124 near second sub-light barrier 122 1 sides on the first sub-light barrier 121 and be formed with pdlc film 125 near first sub-light barrier 121 1 sides.Light barrier 12 receives and reflection source 11 sends light to the first transparency carrier 101 or 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 the light barrier 12 can be the H-PDLC film of giving an example in the foregoing description, repeats no more at this.
Need to prove that light barrier 12 can be Fig. 6, the semicircle shown in 7, so that the light that uniform more reflection source 11 provides, but do not do any qualification with this, light barrier 12 can also be set to rectangle or half elliptic etc.Light barrier 12 can be connected with second transparency carrier 102; Perhaps be connected with first transparency carrier 101; Perhaps simultaneously and first transparency carrier 101 and second transparency carrier 102; Also can neither be connected also and be not connected, not do any qualification with the diagram connected mode with second transparency carrier 102 with first transparency carrier 101.
Further; As shown in Figure 7, the 3rd transparency electrode 123 and the 4th transparency electrode 124 form electric field for H-PDLC film 125 (pdlc film of Reference numeral 125 representatives is the H-PDLC film herein among Fig. 7) provides voltage with first transparency electrode 101; So that be formed with the light that light barrier 12 reflections of H-PDLC film 125 receive; Form positive negative electric field between the 3rd transparency electrode 123 and the 4th transparency electrode 124 voltage is provided, make that when not applying voltage H-PDLC film 125 presents scattering states in the light barrier 12; Promptly keep transparent, when applying voltage, then present the reflection attitude.
As shown in Figure 8, to be formed with H-PDLC film 125 between H-PDLC film 1025, the 3rd transparency electrode 123 and the 4th transparency electrode 124 be that example describes to be formed with between first transparency electrode 1023 and second transparency electrode 1024, but not as qualification.
When light source 11 unlatchings, first transparency electrode 1023 and 1024 pairs of H-PDLC films 1025 of second transparency electrode apply voltage; The 3rd transparency electrode 123 and 124 pairs of H-PDLC films 125 of the 4th transparency electrode apply voltage, when H-PDLC film 1025 is applied voltage, and 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 voltage, and 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 (dotted arrow is represented among Fig. 8) and right-handed rotation (solid arrow is represented among Fig. 8); The left-handed rotation that incides on H-PDLC film 1025 and the H-PDLC film 125 changes right-handed rotation into after reflecting; The right-handed rotation of inciding on H-PDLC film 1025 and the H-PDLC film 125 changes left-handed rotation into after reflecting; By H-PDLC film 1025 light with 125 reflections of H-PDLC film, and the light that sends of light source 11 incides by left-handed cholesteric liquid crystal and prepares on the high molecule liquid crystal film 1013, because the hand of spiral of cholesteric liquid crystal is left-handed; Therefore to transmission dextrorotation light, reflect left-handed light.So; Left-handed rotation by 1013 reflections of wide wave reflection high molecule liquid crystal film is reflected through H-PDLC film 1025 and H-PDLC film 125 once more; Convert dextrorotation light into, be reflected back to wide wave reflection high molecule liquid crystal film 1013 again, transmission is gone out; The light that light source 11 sends reflects the switching with left-handed rotation and right-handed rotation always between H-PDLC film 1025 and H-PDLC film 125 and wide wave reflection high molecule liquid crystal film 1013; All see through wide wave reflection high molecule liquid crystal film 1013 up to light, penetrate through first transparency carrier 101 again, be converted into area source with pointolite or the line source that light source 11 is provided.
Wherein, middle Reference numeral 1025 is the H-PDLC film herein among Fig. 7,8, and 125 is the H-PDLC film herein.The H-PDLC film just describes for example, does not do any qualification.
A kind of light guide plate assembly 1 provided by the invention; Light guide plate assembly 1 comprises light source 11 and LGP 10; First transparency carrier 101 and second transparency carrier, 102, the first transparency carriers 101 that comprise the opposing parallel setting in the LGP 10 and have a certain distance comprise the wide wave reflection high molecule liquid crystal film 1013 that forms between first transparent submounts 1011, the second transparent submounts 1012 and two submounts; Second transparency carrier 102 comprises the 3rd transparent submounts the 1021, the 4th transparent submounts 1022; Be respectively arranged with first transparency electrode 1023 and second transparency electrode 1024 on the inside surface of the 3rd transparent submounts 1021 and the 4th transparent submounts 1022, and be formed with pdlc film 1025 between two transparency electrodes.So; Because first transparency electrode 1023 and second transparency electrode 1024 provide electric field; Second transparency carrier 102 reflexes to first transparency carrier 101 with the light that receives; The light that 101 transmissions of first transparency carrier or reflection receive, wherein, during second transparency carrier, 102 reflection rays with left-handed light become dextrorotation light, dextrorotation light becomes left-handed light.Because the 101 meeting transmissions of first transparency carrier left-handed or dextrorotation light, reflection dextrorotation or left-handed light; And all light that 102 reflections of second transparency carrier receive; Make light in first transparency carrier 101 and 102 repeatedly reflections of second transparency carrier, thereby pointolite or the line source that light source sends converted into from the area source of first transparency carrier, 101 outgoing through repeatedly reflecting; And utilize and to be formed with pdlc film 1,025 second transparency carriers 102 and to replace coloured reflector, thereby make LGP 10 and transmittance better improve the transparency of LGP.
Manufacturing method of light conducting board as shown in Figure 9, that the embodiment of the invention provides comprises:
S101, in first transparency carrier, form wide wave reflection high molecule liquid crystal film through the monomer that has the photopolymerizable group liquid crystal liquid crystal being carried out optical processing and thermal treatment between the first transparent submounts and the second transparent submounts.
Exemplary, in first transparency carrier, between the first transparent submounts and the second transparent submounts light trigger adding is had in the monomer of photopolymerizable group liquid crystal liquid crystal; Under preset temperature, monomer is carried out UV-irradiation then; As can be at cholesteric phase that is higher than liquid crystal and smectic A phase transition temperature, but at 10 degree that are higher than said transition temperature with the interior UV-irradiation that carries out, as; If transition temperature is 300 °; Then between 300 ° to 310 °, choose arbitrary temperature and carry out UV-irradiation,, obtain twisting brilliant Jie mutually and cholesteric phase coexistence film so that raise with the temperature that smectic A changes mutually away from cholesteric phase in the monomer of ultraviolet light one side; Brilliant Jie's phase of this distortion and cholesteric phase coexistence film are exactly the wide wave reflection high molecule liquid crystal, have the left-handed characteristic or the dextrorotation characteristic of cholesteric liquid crystal.So, the wide wave reflection high molecule liquid crystal film of formation has the characteristic of cholesteric liquid crystal, can the left-handed light of transmission, and reflection dextrorotation light; Perhaps, transmission dextrorotation light reflects left-handed light.Need to prove, all comprise left-handed light and dextrorotation light in the light, wide wave reflection high molecule liquid crystal film can be with left-handed light transmission, right-handed rotation line reflection in the light that receives, or, the transmission of dextrorotation light, left-handed rotation line reflection.
S102, in second transparency carrier, near the 4th transparent submounts one side first transparency electrode is set on the 3rd transparent submounts.
S103, in second transparency carrier, near the 3rd transparent submounts one side second transparency electrode is set on the 4th transparent submounts.
S104, between first transparency electrode and second transparency electrode, form the macromolecule pdlc film parallel with liquid crystal through writing material information.
Preferably, because the H-PDLC film is better to the reflecting properties of light, penetrability is also more superior, so PDLC is preferably the H-PDLC film.According to difference to H-PDLC material writing information mode, can form the membrane structure of two kinds of orientations, a kind of 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.Because being formed with second transparency carrier of H-PDLC is to be used to replace reflecting plate, the realization reflection, so can obtain reflective H-PDLC, light is reflected through control writing information mode.
Need to prove that there are not sequencing in S101, S102, S103 and S104, can carry out successively; Carry out in order like S101, S102, S103, S104; Can also carry out simultaneously, can also carry out by transpose, as carrying out in order according to S102, S103, S104, S101; And the execution sequence of S102 and S103 can be put upside down, and does not do any qualification here.
S105, with first transparency carrier and the second transparency carrier opposing parallel and have the certain distance setting.
The left-handed light of the first transparency carrier transmission, reflection dextrorotation light; Perhaps, transmission dextrorotation light reflects left-handed light; Second transparency carrier receives and light to the first transparency carrier reflection source emission or the reflection of 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.
Method for manufacturing light guide plate provided by the invention; Comprise the opposing parallel setting in the LGP and have first transparency carrier and second transparency carrier of certain distance, first transparency carrier comprises the wide wave reflection high molecule liquid crystal film that forms between the first transparent submounts, the second transparent submounts and two submounts; Second transparency carrier comprises the 3rd transparent submounts, the 4th transparent submounts, is respectively arranged with first transparency electrode and 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 first transparency electrode and second transparency electrode provide electric field; Second transparency carrier reflexes to first transparency carrier with the light that receives; The light that the first transparency carrier transmission or reflection receive, wherein, during the second transparency carrier reflection ray with left-handed light become dextrorotation light, dextrorotation light becomes left-handed light.Because first transparency carrier meeting transmission is left-handed or dextrorotation light, reflection dextrorotation or left-handed light; And all light that the reflection of second transparency carrier receives; Make light between first transparency carrier and second transparency carrier, repeatedly reflect, thereby pointolite or the line source that light source sends converted into from the area source of the first transparency carrier outgoing through repeatedly reflecting; And utilize and to be formed with pdlc film second transparency carrier and to replace coloured reflector, thereby make the better transparency of raising LGP and light guide plate assembly of transmittance of LGP and light guide plate assembly.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of said claim.
Claims (10)
1. a LGP is characterized in that, comprising:
First transparency carrier, said first transparency carrier comprise the first transparent submounts, the second transparent submounts, and are formed at the wide wave reflection high molecule liquid crystal film between the said first transparent submounts and the said second transparent submounts;
With the said first transparency carrier opposing parallel setting and have second transparency carrier of certain distance; Said second transparency carrier comprises the 3rd transparent submounts, the 4th transparent submounts; Be provided with first transparency electrode near the said the 4th transparent submounts one side on the said the 3rd transparent submounts; Be provided with second transparency electrode near the said the 3rd transparent submounts one side on the said the 4th transparent submounts, be formed with pdlc film between said first transparency electrode and said second transparency electrode.
2. LGP according to claim 1 is characterized in that, said pdlc film is the H-PDLC film.
3. LGP according to claim 1 is characterized in that, has cholesteric liquid crystal in the said wide wave reflection high molecule liquid crystal film.
4. LGP according to claim 3 is characterized in that,
The cholesteric liquid crystal that exists in the said wide wave reflection high molecule liquid crystal film is the left-handed cholesteric liquid crystal or the cholesteric liquid crystal of dextrorotation.
5. a light guide plate assembly is characterized in that, comprising:
Each described LGP of claim 1 to 4;
Be arranged on first transparency carrier of said LGP and at least one light source between second transparency carrier.
6. light guide plate assembly according to claim 5 is characterized in that,
Said light source is two, is separately positioned on the two ends of said LGP;
Said light guide plate assembly also comprises:
Be arranged on the said light source outside, connect the light barrier of said first transparency carrier and said second transparency carrier.
7. light guide plate assembly according to claim 6 is characterized in that,
Said light barrier comprises the first sub-light barrier, the second sub-light barrier; Be provided with the 3rd transparency electrode near said second sub-light barrier one side on the said first sub-light barrier; Be provided with the 4th transparency electrode near said first sub-light barrier one side on the said second sub-light barrier, be formed with pdlc film between said the 3rd transparency electrode and said the 4th transparency electrode.
8. a manufacturing method of light conducting board is characterized in that, comprising:
In first transparency carrier, form wide wave reflection high molecule liquid crystal film through the monomer that has the photopolymerizable group liquid crystal liquid crystal being carried out optical processing and thermal treatment between the first transparent submounts and the second transparent submounts;
In second transparency carrier, near the 4th transparent submounts one side first transparency electrode is set on the 3rd transparent submounts;
In second transparency carrier, near the 3rd transparent submounts one side second transparency electrode is set on the 4th transparent submounts;
Between said first transparency electrode and said second transparency electrode, form the macromolecule pdlc film parallel with liquid crystal through writing material information;
With said first transparency carrier and the said second transparency carrier opposing parallel and have the certain distance setting.
9. manufacturing method of light conducting board according to claim 8 is characterized in that, said pdlc film is the H-PDLC film.
10. manufacturing method of light conducting board according to claim 8; It is characterized in that, in first transparency carrier, comprise through the monomer that has the photopolymerizable group liquid crystal liquid crystal being carried out optical processing and thermal treatment formation wide wave reflection high molecule liquid crystal film between the first transparent submounts and the second transparent submounts:
Said between the first transparent submounts described in said first transparency carrier and the said second transparent submounts has in the monomer of photopolymerizable group liquid crystal liquid crystal and adds light trigger;
Under preset temperature, said monomer is carried out UV-irradiation; So that away from cholesteric liquid crystal in the said monomer of ultraviolet light one side and the smectic A temperature rising of liquid crystal transformation mutually; On said first transparency carrier, obtain twisting brilliant Jie's phase liquid crystal and cholesteric liquid crystal coexistence film, brilliant Jie's phase liquid crystal of said distortion and cholesteric liquid crystal coexistence film are said wide wave reflection high molecule liquid crystal.
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| CN102798926B (en) | 2014-08-13 |
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