CN103838029B - A kind of display unit - Google Patents
A kind of display unit Download PDFInfo
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- CN103838029B CN103838029B CN201410054796.9A CN201410054796A CN103838029B CN 103838029 B CN103838029 B CN 103838029B CN 201410054796 A CN201410054796 A CN 201410054796A CN 103838029 B CN103838029 B CN 103838029B
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Abstract
The invention discloses a kind of display unit, comprise first substrate, second substrate, be filled in liquid crystal layer between first substrate and second substrate, be arranged on first substrate dorsad liquid crystal layer one side the first polarizing layer and be arranged on second substrate the second polarizing layer of liquid crystal layer one side dorsad, wherein, described the first polarizing layer be can transmission along the polarised light of specific direction and reflection the polarization spectro layer perpendicular to the polarised light of described specific direction. In this programme, due to be arranged in first substrate dorsad the line polaroid of the first polarizing layer of liquid crystal layer one side be replaced by can transmission specific direction polarised light and reflection perpendicular to the polarization spectro layer of the polarised light of described specific direction, thereby, in the time that the backlight of display unit is not lighted, screen can present mirror effect due to the environment polarised light of a direction of reflection, and in the time that backlight is lighted, screen can transmission other direction polarised light and realize the effect of picture disply, improve the practicality of display unit and functional.
Description
Technical field
The present invention relates to technical field of liquid crystal display, relate in particular to a kind of display unit.
Background technology
Along with the development of flat panel display, there is the advantages such as volume is little, low in energy consumption, radiationlessLCD(LiquidCrystalDisplay, liquid crystal indicator) replace gradually cathode-ray tube (CathodeRayTube, CRT) display unit becomes the main product in display device.
As shown in Figure 1, it is the structural representation of liquid crystal indicator described in prior art, described liquid crystalDisplay unit can comprise color membrane substrates 11, array base palte 12, be filled in described color membrane substrates 11 and described battle arrayLiquid crystal layer 13 between row substrate 12, be arranged on described color membrane substrates 11 described liquid crystal layer 13 1 sides dorsadThe first polarizing layer 14, be arranged on described array base palte 12 the second polarisation of described liquid crystal layer 13 1 sides dorsadLayer 15 and be positioned at the backlight module 16 under described the second polarizing layer 15. Particularly, described the first polarisationLayer 14 and described the second polarizing layer 15 are conventionally by direction transmission of natural daylight, a direction are absorbedSimple line polaroid form, and the polaroid in described the second polarizing layer 15 can be called as conventionallyPlay wilfully mating plate, the polaroid in described the first polarizing layer 14 can be called as checking bias slice conventionally.
Particularly, as shown in Figure 2, in the time adopting this kind of structure, due to the back of the body when described liquid crystal indicatorWhen backlight in optical mode group 16 is not lighted, the polaroid transmissive surround lighting in described the first polarizing layer 14In P polarised light and the S polarised light in absorbing environmental light, and P polarised light in described surround lighting can quiltCertain rete in described liquid crystal indicator absorbs, therefore, makes now, described liquid crystal indicatorScreen is generally black light-absorbing surface, can't produce the effect that minute surface shows.
Summary of the invention
The embodiment of the present invention provides a kind of display unit, in order to solve the back of the body when display unit of current existenceWhen light source is not lighted, cannot realize minute surface show problem.
A kind of display unit, comprises first substrate, second substrate, is filled in described first substrate and described theLiquid crystal layer between two substrates, be arranged on described first substrate the first polarizing layer of described liquid crystal layer one side dorsadAnd be arranged on described second substrate the second polarizing layer of described liquid crystal layer one side dorsad, wherein:
Described the first polarizing layer is polarization spectro layer, described polarization spectro layer can transmission along specific direction partiallyLight and the reflection polarised light perpendicular to described specific direction shakes.
In technical scheme described in the embodiment of the present invention, due to be positioned at first substrate dorsad liquid crystal layer one sideLine polaroid in one polarizing layer has been replaced by polarised light (described specific direction that can transmission specific directionPolarised light be generally P polarised light) and reflection perpendicular to the polarised light of described specific direction (described perpendicular toThe polarised light of described specific direction is generally S polarised light) polarization spectro layer, thereby, in display unitWhen backlight is not lighted, screen can present mirror effect due to the environment polarised light of a direction of reflection, andIn the time that the backlight of display unit is lighted, screen can transmission other direction polarised light and realize picture displyEffect, the practicality of raising display unit and functional.
Further, described the second polarizing layer is the described polarization spectro that structure is identical with described the first polarizing layerLayer, thus can reach the interference of the polarised light perpendicular to described specific direction in further wiping out background light,Better or the picture display effect when further improving display unit and normally showing of effect that minute surface is shownObject.
Further, described polarization spectro layer comprises reflecting layer; Wherein, described reflecting layer is by multilayer film institute shapeBecome, described multilayer film is alternately formed by the different bi-material of refractive index, to pass through high and low refractive index materialOverlapping multi-layer film structure is realized light splitting (the transmission specific direction that incident light is carried out to different polarization direction mutuallyPolarised light and reflection perpendicular to the polarised light of described specific direction) effect.
Further, the described bi-material in described reflecting layer is respectively titanium dioxide and silica.
Further, described polarization spectro layer also comprises the protective layer that is positioned at both sides, described reflecting layer.
Further, described protective layer is transparent material, with on the basis that reaches good translucent effect,Play the object in the described reflecting layer of protection.
Further, the refractive index of the bi-material of the refractive index of described transparent material in described reflecting layerBetween, to reach the object of being convenient to draw materials and reducing material cost.
Further, described transparent material is glass.
Further, the protective layer in described polarization spectro layer is described polarization spectro layer corresponding firstSubstrate or second substrate, to reduce on the basis of processing step, reach the film layer structure of simplifying display unitAnd reduce the object of display unit thickness.
Further, described display unit is also provided with backlight, the thickness of every skim in described multilayer filmBe 1/4 of dominant wavelength backlight that described backlight sends, to pile up by rete and 1/4 dominant wavelength thicknessFilm layer structure produce the principle of anti-reflection film, and then realize polarised light (P polarised light) complete of specific directionTotal transmissivity and perpendicular to the effect of reflection completely of the polarised light (S polarised light) of described specific direction.
Beneficial effect of the present invention is as follows:
The embodiment of the present invention provides a kind of display unit, comprises first substrate, second substrate, is filled in instituteState liquid crystal layer between first substrate and described second substrate, be arranged on described first substrate described liquid crystal dorsadThe first polarizing layer of layer one side and be arranged on described second substrate described liquid crystal layer one side second inclined to one side dorsadPhotosphere, wherein, described the first polarizing layer be can transmission along the polarised light of specific direction and reflection perpendicular toThe polarization spectro layer of the polarised light of described specific direction. In technical scheme described in the embodiment of the present invention, due toBe arranged in first substrate dorsad the line polaroid of the first polarizing layer of liquid crystal layer one side be replaced by can be saturatingPenetrate specific direction polarised light (polarised light of described specific direction is generally P polarised light) and reflection perpendicular toThe polarised light (the described polarised light perpendicular to described specific direction is generally S polarised light) of described specific directionPolarization spectro layer, thereby, in the time that the backlight of display unit is not lighted, screen can due to reflection a sideTo environment polarised light and present mirror effect, and in the time that the backlight of display unit is lighted, screen can transmissionThe polarised light of other direction and realize the effect of picture disply, improves the practicality of display unit and functional.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, institute in describing embodiment belowNeed the accompanying drawing using to briefly introduce, apparently, the accompanying drawing in the following describes is only of the present inventionSome embodiment, for those of ordinary skill in the art, are not paying under the prerequisite of creative work,Can also obtain according to these accompanying drawings other accompanying drawing.
Figure 1 shows that the structural representation of liquid crystal indicator described in prior art;
Figure 2 shows that corresponding light line when the backlight when liquid crystal indicator is not lighted in prior artRoad schematic diagram;
Figure 3 shows that the structural representation of display unit described in the embodiment of the present invention;
Figure 4 shows that the structural representation of the layer of polarization spectro described in the embodiment of the present invention and P, S polarizationThe transmission of the relatively described polarization spectro layer of light and reflection schematic diagram;
Figure 5 shows that corresponding light when the backlight when display unit is not lighted described in the embodiment of the present inventionLine conspectus;
Figure 6 shows that corresponding light when the backlight when display unit is lighted described in the embodiment of the present inventionConspectus one;
Figure 7 shows that corresponding light when the backlight when display unit is lighted described in the embodiment of the present inventionConspectus two.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to thisBright being described in further detail, 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 are not doingGo out all other embodiment that obtain under creative work prerequisite, all belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of display unit, and described display unit can be display panels, electricitySub-paper, OLED(OrganicLight-EmittingDiode, Organic Light Emitting Diode) panel, mobile phone,Panel computer, television set, display, notebook computer, DPF, navigator etc. are any possesses demonstrationThe product of function or parts, the embodiment of the present invention is not limited in any way this.
Particularly, as shown in Figure 3, it is the structural representation of display unit described in the embodiment of the present invention,Described display unit can comprise first substrate 31, second substrate 32, be filled in described first substrate 31 and instituteState liquid crystal layer 33 between second substrate 32, be arranged on described first substrate 31 described liquid crystal layer 33 dorsadThe first polarizing layer 34 of one side and be arranged on described second substrate 32 described liquid crystal layer 33 1 sides dorsadThe second polarizing layer 35, wherein:
Described the first polarizing layer 34 can be polarization spectro layer 36, described polarization spectro layer 36 can transmission along spyDetermine the polarised light of direction and reflect the polarised light perpendicular to described specific direction; Wherein, of the present inventionIn embodiment, the polarised light of described specific direction can be P polarised light conventionally, described perpendicular to described certain partyTo polarised light conventionally can be S polarised light.
It should be noted that, according to prior art, the definition of P, S polarised light can be as follows: work as lightWhile penetrating optical element surperficial with non-perpendicular angle, transmission and reflection characteristic all depends on polarization phenomena, thisIn the situation of kind, the coordinate system of use is defined by the plane that contains input and folded light beam. If lightPolarization vector in this plane, be called P polarised light, if the polarization vector of light is flat perpendicular to thisFace, is called S polarised light; Particularly, any input polarization state can be expressed as S and P dividesThe vector of amount, the embodiment of the present invention does not repeat this.
In technical scheme described in the embodiment of the present invention, owing to being positioned at first substrate 31 liquid crystal layer 33 1 dorsadLine polaroid in the first polarizing layer 34 of side has been replaced by polarised light that can transmission specific direction and anti-Penetrate the polarization spectro layer perpendicular to the polarised light of described specific direction, thereby, at the backlight of display unit notWhile lighting, screen can present mirror effect due to the environment polarised light of a direction of reflection, and is showing dressWhen the backlight of putting is lighted, screen can transmission other direction polarised light and realize the effect of picture disply, carryThe practicality of high display unit and functional.
Particularly, as shown in Figure 4, described polarization spectro layer 36 can comprise reflecting layer 361 conventionally; Wherein,Described reflecting layer 361 can be formed by multilayer film conventionally, and described multilayer film is by the different bi-material of refractive indexAlternately form, to realize incident light is carried out by the mutual overlapping multi-layer film structure of high and low refractive index material(polarised light of transmission specific direction reflection are inclined to one side perpendicular to described specific direction in the light splitting of different polarization directionLight shakes) effect.
Further, in embodiment of the present invention, the first tunic in described reflecting layer 361 andLater layer film can be commaterial conventionally, to form { (high-index material, low-index material)nHighRefraction materials } overlapping structure or { (low-index material, high-index material)nLow-index material }Overlapping structure, the embodiment of the present invention is not limited in any way this. It should be noted that in addition, as long as canRealize transmission along the polarised light of specific direction and reflect the effect perpendicular to the polarised light of described specific direction,Described reflecting layer 361 can also adopt other overlapping structures, and the embodiment of the present invention is not also limited in any way this.Particularly, in the polarization spectro layer 36 described in Fig. 4, what described reflecting layer 361 adopted is { (heightRefraction materials, low-index material)nHigh-index material } overlapping structure.
Further, in embodiment of the present invention, for the ease of drawing materials and reducing material cost, instituteThe described bi-material of stating in reflecting layer 361 can be respectively the titanium dioxide that refractive index is relatively high conventionally（TiO2) and the relatively low silica (SiO of refractive index2), the embodiment of the present invention does not repeat this.
Further, as shown in Figure 4, in order to reach the object in the described reflecting layer 361 of protection, described polarizationBeam splitter layer 36 can also comprise the protective layer 362 that is positioned at 361 both sides, described reflecting layer conventionally; Further,In order to reach good translucent effect, described protective layer 362 can be transparent material conventionally.
Further, in order to reach the object of being convenient to draw materials and reducing material cost, described transparent material (Described protective layer 362) conventionally can be chosen for bi-material that refractive index can be in described reflecting layer 361The material that (comprises the refractive index of the bi-material in described reflecting layer 361) between refractive index.
For example, as shown in Figure 4, when the bi-material in described reflecting layer 361 is respectively titanium dioxide (TiO2）And silica (SiO2) time, described protective layer 362 can be glass (refractive index be less than titanium dioxide,But be more than or equal to silica) etc. transparent material, now, the film layer structure of described polarization spectro layer 36Can be expressed as { transparent material/(the TiO such as glass2/SiO2)nTiO2The transparent materials such as/glass }, the invention processExample does not repeat this. Correspondingly, now, the transmission of P, the relatively described polarization spectro layer 36 of S polarised lightCan be as shown in Figure 4 with reflection schematic diagram, the embodiment of the present invention does not also repeat this.
Certainly it should be noted that, described transparent material (being described protective layer 362) also can be chosen for refractionRate is greater than arbitrary material of the refractive index of the high-index material in described reflecting layer 361, or refractive index is less thanThe material of the refractive index of the low-index material in described reflecting layer 361, the embodiment of the present invention is not appointed thisWhat limits.
Further, in embodiment of the present invention, in order to simplify film layer structure, the reduction of display unitThe thickness of display unit, protective layer 362(first protective layer in described polarization spectro layer 36) can be instituteState the corresponding substrate of polarization spectro layer 36, as described in first substrate 31; , now, can directly adoptAt described first substrate 31 upper surfaces (one side not contacting with described liquid crystal layer 33) deposition of reflective layer 361,And (one side not contacting with the first protective layer) deposits another protective layer 362 on described reflecting layer 361(the second protective layer) obtains described polarization spectro layer 36, and the embodiment of the present invention does not repeat this.
Certainly, it should be noted that, now, also can adopt in described first substrate 31 upper surface depositionsProtective layer 362(the first protective layer), and on described the first protective layer 362 (with described liquid crystal layer 33The one side not contacting) deposition of reflective layer 361, and on described reflecting layer 361 (with the first protectionThe one side that do not contact of layer) deposit another protective layer 362(the second protective layer) obtain described polarization spectroLayer 36, the embodiment of the present invention does not also repeat this.
Further, in embodiment of the present invention, described display unit also can be provided with backlight conventionally37; Wherein, described backlight 37 can be the backlight module being arranged under described the second polarizing layer 35 conventionallyA subassembly, the embodiment of the present invention does not repeat this.
Further, in the described multilayer film in described reflecting layer 361, the thickness of every skim all can be conventionally1/4 of the dominant wavelength backlight that described backlight 37 sends, to pile up by rete and 1/4 dominant wavelength thicknessFilm layer structure produce the principle of anti-reflection film, and then realize polarised light (P polarised light) complete of specific directionTotal transmissivity and perpendicular to the effect of reflection completely of the polarised light (S polarised light) of described specific direction.
Particularly, taking the polarised light of described specific direction as P polarised light is as example, as shown in Figure 5, when describedWhen backlight 37 is not lighted, because described the first polarizing layer 34 is described polarization spectro layer 36, and due toDescribed polarization spectro layer 36 possesses the S polarization in P polarised light the reflect ambient light in transmission surround lightingThe effect of light (particularly, the cardinal principle of described polarization spectro layer 36 is, when incidence natural lights be in intoWhile penetrating the Brewster's angle of medium face, can realize the completely anti-of the complete transmission of P polarised light and S polarised lightPenetrate), therefore, now, described display unit can form mirror because the S polarised light in surround lighting is reflectedThe effect that face shows.
Further, as shown in Figure 6, in the time that described backlight 37 is lighted, due to described the second polarizing layerIn 35, conventionally can be simple linear polarizer, therefore, with existing technology type seemingly, there will be transmission backlight backlightIn P polarised light (for picture disply) and absorb the effect of backlight S polarised light backlight, andAnd now,, therefore, can't there is the effect that minute surface shows in backlight excessively strong due to backlight, that is,Can't affect the normal demonstration of described display unit.
Further, in embodiment of the present invention, in further wiping out background light perpendicular to instituteState the polarised light of specific direction, i.e. the interference of S polarised light, the effect that minute surface is shown is better or furtherImprove the picture display effect of display unit while normally showing, can be by described the second polarizing layer 35 simpleLinear polarizer also replaces with the described polarization spectro layer 36 that structure is identical with described the first polarizing layer 34, thisTime, as shown in Figure 7, in the time that described backlight 37 is lighted, owing to being also inclined to one side in described the second polarizing layer 35The beam splitter layer 36 that shakes, therefore, there will be the P polarised light (for picture disply) of transmission backlight in backlight,And thereby the S polarised light in backlight is reflected back into the effect that described backlight module 37 utilizes again, therebyCan reach the object that improves the picture display effect of described display unit while normally showing.
It should be noted that, in embodiment of the present invention, for simplify display unit film layer structure,Reduce the thickness of display unit, the protective layer 362 in the polarization spectro layer 36 in described the second polarizing layer 35Also can be the substrate at described polarization spectro layer 36 place, as described in second substrate 32; That is, now, can be straightConnect and adopt in described second substrate 32 lower surfaces (one side not contacting with described liquid crystal layer 33) deposition insteadPenetrate layer 361, and in described reflecting layer 361 lower surfaces (one side not contacting with described second substrate 32)Deposit another protective layer 362 and obtain described polarization spectro layer 36, the embodiment of the present invention does not repeat this.
Certainly, it should be noted that, now, also can adopt in described second substrate 32 lower surface depositionsOne protective layer 362(the first protective layer), and at described protective layer 362(the first protective layer) lower surface (withThe one side that described second substrate 32 does not contact) deposition of reflective layer 361, and in described reflecting layer 361Lower surface (one side not contacting with described the first protective layer) deposits another protective layer 362(second and protectsLayer) obtain described polarization spectro layer 36, the embodiment of the present invention does not also repeat this.
Have, it should be noted that, the display unit described in the embodiment of the present invention can be TN(TwistedNematic, twisted-nematic) pattern, VA(VerticalAlignment, vertical orientated) pattern, IPS(In-PlaneSwitching, plane conversion technology) pattern or ADS(AdvancedSuperDimensionSwitch,A senior super dimension switch technology) pattern etc., the embodiment of the present invention is not limited in any way this.
The embodiment of the present invention provides a kind of display unit, comprises first substrate, second substrate, is filled in instituteState liquid crystal layer between first substrate and described second substrate, be arranged on described first substrate described liquid crystal dorsadThe first polarizing layer of layer one side and be arranged on described second substrate described liquid crystal layer one side second inclined to one side dorsadPhotosphere, wherein, described the first polarizing layer be can transmission along the polarised light of specific direction and reflection perpendicular toThe polarization spectro layer of the polarised light of described specific direction. In technical scheme described in the embodiment of the present invention, due toBe arranged in first substrate dorsad the line polaroid of the first polarizing layer of liquid crystal layer one side be replaced by can be saturatingPenetrate the polarised light (being generally P polarised light) of specific direction and reflect the polarised light perpendicular to described specific directionThe polarization spectro layer of (being generally S polarised light), thereby, in the time that the backlight of display unit is not lighted, screenCurtain can present mirror effect due to the environment polarised light of a direction of reflection, and at the backlight of display unitWhile lighting, screen can transmission other direction polarised light and realize the effect of picture disply, improve display unitPracticality and functional.
Obviously, those skilled in the art can carry out various changes and modification and not depart from this present inventionBright spirit and scope. Like this, if of the present invention these amendment and modification belong to the claims in the present invention andWithin the scope of its equivalent technologies, the present invention be also intended to comprise these change and modification interior.
Claims (7)
1. a display unit, comprises first substrate, second substrate, is filled in described first substrate and instituteState liquid crystal layer between second substrate, be arranged on described first substrate described liquid crystal layer one side first inclined to one side dorsadPhotosphere and be arranged on described second substrate the second polarizing layer of described liquid crystal layer one side dorsad, its feature existsIn,
Described the first polarizing layer is polarization spectro layer, described polarization spectro layer can transmission along specific direction partiallyLight and the reflection polarised light perpendicular to described specific direction shakes;
Wherein, described polarization spectro layer comprises reflecting layer and is positioned at the protective layer of both sides, described reflecting layer;
Wherein, described reflecting layer is formed by multilayer film, and described multilayer film is by the different bi-material of refractive indexAlternately form;
And, the protective layer in described polarization spectro layer be the corresponding first substrate of described polarization spectro layer orSecond substrate.
2. display unit as claimed in claim 1, is characterized in that,
Described the second polarizing layer is the described polarization spectro layer that structure is identical with described the first polarizing layer.
3. display unit as claimed in claim 1, is characterized in that,
Described bi-material is respectively titanium dioxide and silica.
4. display unit as claimed in claim 1, is characterized in that,
Described protective layer is transparent material.
5. display unit as claimed in claim 4, is characterized in that,
Between the refractive index of the bi-material of the refractive index of described transparent material in described reflecting layer.
6. display unit as claimed in claim 4, is characterized in that,
Described transparent material is glass.
7. the display unit as described in any one in claim 3 to 6, is characterized in that,
Described display unit is provided with backlight, and in described multilayer film, the thickness of every skim is described backlight1/4 of the dominant wavelength backlight that send in source.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410054796.9A CN103838029B (en) | 2014-02-18 | 2014-02-18 | A kind of display unit |
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| CN201410054796.9A CN103838029B (en) | 2014-02-18 | 2014-02-18 | A kind of display unit |
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| CN103838029B true CN103838029B (en) | 2016-05-18 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240608A (en) * | 2014-09-29 | 2014-12-24 | 深圳市华星光电技术有限公司 | Display device |
| CN105446001B (en) | 2016-01-25 | 2018-09-04 | 京东方科技集团股份有限公司 | A kind of display panel and its working method, display device |
| CN105759493A (en) * | 2016-05-11 | 2016-07-13 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN106200066B (en) * | 2016-07-22 | 2019-08-16 | 京东方科技集团股份有限公司 | Optical waveguide display device and its manufacturing method |
| CN107272250B (en) * | 2017-07-07 | 2019-11-05 | 上海天马微电子有限公司 | Display panel and display device |
| CN113176685A (en) * | 2021-05-28 | 2021-07-27 | 福州京东方光电科技有限公司 | Display panel and display device |
| CN114647113B (en) * | 2022-03-21 | 2024-01-09 | 北京京东方光电科技有限公司 | Display module and display device |
| CN118192078A (en) * | 2022-12-12 | 2024-06-14 | 华为技术有限公司 | Display device and vehicle |
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