CN101963719B - Liquid crystal display and liquid crystal display device - Google Patents
Liquid crystal display and liquid crystal display device Download PDFInfo
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- CN101963719B CN101963719B CN2010102650237A CN201010265023A CN101963719B CN 101963719 B CN101963719 B CN 101963719B CN 2010102650237 A CN2010102650237 A CN 2010102650237A CN 201010265023 A CN201010265023 A CN 201010265023A CN 101963719 B CN101963719 B CN 101963719B
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- 230000010287 polarization Effects 0.000 claims abstract description 106
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- 239000002184 metal Substances 0.000 claims abstract description 21
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- 239000000758 substrate Substances 0.000 claims abstract description 17
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 abstract 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133548—Wire-grid polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
- Optical Filters (AREA)
Abstract
The invention relates to a liquid crystal display which comprises a glass substrate, an ITO (Indium Tin oxide) electrode, a liquid crystal and a polaroid, and is characterized in that a color polarization beam splitter is arranged between the glass substrate arranged on one side of light rays and the ITO electrode; or the color polarization beam splitter is arranged between the ITO electrode on one side of the light rays and the liquid crystal; the color polarization beam splitter is provided with a pixel array; each pixel contains three sub-pixels or single pixels; the three sub-pixels are respectively formed by metal wire gating with different widths and periods and are respectively in one-to-one correspondence relation with the red, green and blue sub-pixels in the liquid crystal display; and the single pixels are formed by the metal wire gating and are in one-to-one correspondence relation with the pixels in the liquid crystal display. The invention also discloses a liquid crystal display device. The liquid crystal display and the liquid crystal display device of the invention have the advantages of reasonable design and obvious light utilization efficiency enhancement, and are suitable for liquid crystal display televisions, liquid crystal displays, projection, and the like.
Description
Technical field
The present invention relates to a kind of display device, particularly a kind of liquid crystal display the invention still further relates to the liquid crystal indicator that is made up of this liquid crystal display.
Background technology
In the existing lcd technology, the rotation of the direction of vibration of each liquid crystal sub-pixel (ito thin film matrix electrodes and liquid crystal) control polarized white light, color is selected by colored filter.Though that is the light polarization direction at the red, green, blue sub-pixel place in the arrival colored filter has nothing in common with each other, and all is white polarization mixed lights.Ruddiness can only pass through in the red sub-pixel place, and two color light is absorbed in addition, and green, blue sub-pixel is as the same.Like this 2/3 luminous energy is wasted.
The low following in addition several reasons in addition of light utilization efficiency in the present lcd technology: the polarized light that 1, direction of vibration is vertical with plastic polarized polarization direction is absorbed by plastic polarized and is not utilized; 2, a pixel on the colored filter is combined by RGB three subpixels and black surround on every side thereof, and black surround also is light absorbing.Also have thin film transistor (TFT) and electric capacity also can take a part of space in 3 each ito thin film matrix electrodes pixel.This part space also can stop light.More than some reason addition cause efficiency of light energy utilization less than 10%, that is polaroid and these two devices of colored filter slattern 90% of luminous energy.In existing shadow casting technique, in order to improve light efficiency, adopted three liquid crystal display technology, needed in the system to divide coloured light, then look closes light repeatedly, complex structure, and technological requirement is high.
Utilize at present for polarized light conversion that more general way is that the vapor deposition polarization beam splitter adds slide, because of all being individual devices, and cost is higher again.Mostly be miter angle incident on the structure, beam split more afterwards, complicated, it is also big to take up room.Also let the optical texture of total system complicated.In addition, colored filter of the prior art occupies larger specific gravity in the liquid crystal cost, because of its three primary colors need be painted respectively, and complex process.
Summary of the invention
Technical matters to be solved by this invention is the deficiency to prior art, and the liquid crystal display that a kind of design is more reasonable, can improve the utilization ratio of light greatly is provided.
Another technical matters to be solved by this invention has provided the liquid crystal indicator that a kind of aforesaid liquid crystal display is formed.
Technical matters to be solved by this invention is to realize through following technical scheme.The present invention is a kind of liquid crystal display; Comprise glass substrate (substrate also can be processed by other similar transparent material), ITO electrode, liquid crystal and polaroid; Be characterized in; Between the glass substrate of light inlet one side and ITO electrode, be provided with colored polarization spectro sheet, set gradually liquid crystal, ITO electrode, glass substrate and polaroid at this ITO electrode opposite side; Perhaps between the ITO electrode of light inlet one side and liquid crystal, be provided with colored polarization spectro sheet, set gradually ITO electrode, glass substrate and polaroid at the liquid crystal opposite side; Described colored polarization spectro sheet has pel array; Each pixel contains three subpixels or is single pixel; Three subpixels are made up of the difference width and the wire grating in cycle respectively; Three subpixels respectively with liquid crystal display in the red, green, blue sub-pixel be one-to-one relationship; Promptly with a certain pixel of liquid crystal display in the wire grating of red sub-pixel counterpart be designed to only allow to have certain bandwidth and polarized red beam outgoing polarization direction and wire grating direction orthogonal vertical, polarized red beam and other coloured light that the polarization direction is parallel with the wire grating direction are reflected.Other green sub-pixels and blue subpixels are by that analogy; Single pixel also is made up of wire grating, and pixel is one-to-one relationship in single pixel and the liquid crystal display.
In the liquid crystal display technical scheme of the present invention, optimized technical scheme is: the direction of described wire grating has same tropism.When the polaroid of liquid crystal bright dipping side of the present invention is not to adopt plastic polarized of monoblock type of the prior art, but when adopting pel array formula optical grating construction, the grating orientation between the sub-pixel can have nothing in common with each other in theory.In order to obtain higher light efficiency, in order to obtain the trichromatic harmony of better light, preferably, the direction of wire grating should have same tropism between each sub-pixel but in the present invention.This " direction of wire grating has same tropism " mainly comprises following 3 kinds of situations:
One be meant similar sub-pixel (in the same painting face, outgoing is similar sub-pixel with the sub-pixel of coloured light) the wire grating direction all in the same way, the direction of the wire grating of inhomogeneous sub-pixel can be in the same way, also can be incorgruous.
Two are meant in three-dimensional (3D) shows; When images of left and right eyes or various visual angles picture adopt non-field-sequential mode to show (promptly in same display panel, showing simultaneously); Monochromatic (such as: redness) number of certain sub-pixel is plural number (two of images of left and right eyes or from various visual angles a plurality of); And belong to different picture (for example: left eye picture, right eye picture or various visual angles picture), its each other the direction of wire grating can be the same or different to.But, in same picture, the wire grating direction of similar sub-pixel all in the same way, the direction of the wire grating of inhomogeneous sub-pixel can be in the same way, also can be incorgruous.
Three are meant that the wire grating of similar sub-pixel presents branch assembling directional consistance characteristic.Be the sub-pixel in each set wire grating direction all in the same way, set can be in the same way with the direction of wire grating of sub-pixel between gathering, also can be incorgruous.For example: with adjacency matrix line red sub-pixel by being divided at interval two set (promptly the 1st, 3,5,7 ... Line is a set; 2nd, 4,6,8 ... Line is a set); The wire grating direction of the sub-pixel in two set all in the same way; The direction of the sub-pixel wire grating between two set is by the adjacent in twos ( line 1 and 2,2 and 3 of line direction ...) mutual perpendicular quadrature.
Wire grating of the present invention (being metal line style grating) also comprises scenarios: described wire grating can also be added relevant dielectric layer by metal level and constituted, for example Chinese publication document 200910028285.9 described sub-wave length gratings.
In the known grating technology, metal line style grating can let the polarization direction polarized light vertical with wiregrating pass through, and the polarized light parallel with wiregrating is reflected.The thickness of cycle, dutycycle even the grating of further appropriate design grating; Make it get into the sub-wavelength magnitude; This kind metal line style grating can accomplish only to let certain monochromatic polarized light of specific bandwidth pass through, and another orthogonal directions polarization monochromatic light and other coloured light are reflected.Only let certain monochromatic polarized light of specific bandwidth be used to make colored filter through these characteristics, such as U.S. publication document 2006/0147617A1, Chinese publication document CN1900750A, Chinese publication document 200910028285.9.The present invention not only utilizes the transmission function of metal line style grating, and sub-wavelength metal line style grating is made pel array, also utilizes its reflection function simultaneously, and places it in light inlet one side of liquid crystal, reflects surplus light when being allowed to condition at printing opacity, so that surplus light utilizes again.In conjunction with its position, function (polarization, color separation, beam split) with the colored polarization spectro sheet of its called after.Therefore, colored polarization spectro sheet of the present invention has comprised the colored filter described in the above-mentioned publication document, also is that the colored filter described in the above-mentioned publication document can be used for making colored polarization spectro sheet of the present invention.
In the liquid crystal display technical scheme of the present invention: said colored polarization spectro sheet can also adopt the another kind of frame mode of the following stated: it is by comprising wire grating at least and having periodically the colored filter of the sub-wavelength metal micro-nano structure of array of orifices and form.
" having the periodically colored filter of the sub-wavelength metal micro-nano structure of array of orifices " of the present invention is meant: on metallic film, get the periodically aperture of sub-wavelength micro-nano structure; It can let the light of specific wavelength pass through; Promptly the color to light has selectivity, and the light of other color then is reflected.Only see through function in the prior art and make colored filter with it.For example: application number is a disclosed colorful filter structure in 200810246202.9 the Chinese patent document.And the present invention directly or indirectly superposes the colored filter and the wire grating of this kind metal micro-nanostructure, forms the colored polarization spectro chip architecture of another kind of the present invention form.During use, place it in light inlet one side of liquid crystal, more give full play to its reflection (beam split) function when utilizing its transmission (color separation) function.Wire grating in the colored polarization spectro sheet of this kind can have the color selection function, needn't have dot structure, and only has a polarization spectro function; On the position, also can be placed in the dipped beam side of incident side glass substrate.This form should not constitute the restriction to Seeking for Right of the present invention.This kind structure can reduce difficulty in processing.
In the liquid crystal display technical scheme of the present invention: said colored polarization spectro sheet can also adopt another frame mode of the following stated: it is by comprising that at least wire grating and the colored filter that contains photon crystal structure form.
" colored filter that contains photon crystal structure " of the present invention is meant: design has the photon crystal structure of periodicity defect structure; It can let the light of particular energy level pass through; Promptly the color to light has selectivity, and the light of other color then is reflected.Only see through function in the prior art and make colored filter with it.For example: application number is a disclosed colorful filter structure in 200610128969.2 the Chinese patent document.Colored filter and wire grating that the present invention has this kind the photon crystal structure of periodicity defect structure adopt direct or indirect mode to superpose, and form another colored polarization spectro chip architecture form.During use, place it in light inlet one side of liquid crystal, more give full play to its reflection (beam split) function when utilizing its transmission (color separation) function.Wire grating in the colored polarization spectro sheet of this kind can have the color selection function, needn't have dot structure, and only has a polarization spectro function; On the position, also can be placed in the dipped beam side of incident side glass substrate.This form should not constitute the restriction to Seeking for Right of the present invention.This kind structure can reduce difficulty in processing.
Technical matters to be solved by this invention can also further realize through following technical scheme.Above-described liquid crystal display is characterized in, around the pel array of colored polarization spectro sheet, is provided with the metallic reflection film.
Metallic reflection film of the present invention generally should be located on the rete at wire grating place, but when colored polarization spectro sheet adopted metal micro-nano small structure, the metallic reflection film also can be arranged on the metallic diaphragm of this micro-nano small structure.
Technical matters to be solved by this invention can also further realize through following technical scheme.The present invention also provides a kind of liquid crystal indicator of being made up of the described liquid crystal display of above technical scheme, is characterized in, it comprises back lighting device and the described liquid crystal display of above-described any technical scheme.
Technical matters to be solved by this invention can also further realize through following technical scheme.Above-described liquid crystal indicator is characterized in, described back lighting device is the LCD backlight module that modulated structure is beaten on the limit.
Technical matters to be solved by this invention can also further realize through following technical scheme.Above-described liquid crystal indicator is characterized in, described back lighting device is a reflector, and described reflector is that single reflector or several reflectors of serving as reasons are formed lattice plane.
Technical matters to be solved by this invention can also further realize through following technical scheme.Above-described liquid crystal indicator is characterized in, between reflector and colored polarization spectro sheet, is provided with light-passing board.Described light-passing board can be any thin plate that can printing opacity.
Technical matters to be solved by this invention can also further realize through following technical scheme.Above-described liquid crystal indicator is characterized in, described light-passing board is even tabula rasa.
We know that luminous energy waste is caused the absorption of luminous energy by polaroid and colored filter by prior art, and the conversion of polarized light utilizes existing kinds of schemes again, and the luminous energy that colored filter is wasted utilizes again but rarely has solution.Here the chromatic colour optical filter generally is the reason that adopts the pigment material, and more is the reason on the liquid crystal display thinking.Liquid crystal display needs primaries, and actual liquid crystal sub-pixel control is white light, and color will filter two color light wherein by optical filter, and to be wasted in be exactly inevitable to luminous energy in theory thus.If can monochromatic light directly be provided, and be high-energy utilization factor mode to liquid crystal sub-pixel, then can the jettisoning colored filter.It promptly is direct outgoing monochromatic light that the function that optical filter is filtered other two color light is changed an angle, if the two color light in addition that is filtered is not absorbed but manages its reflection is utilized again, can realize high-energy utilization factor mode.The present invention utilizes this mode exactly; Devices such as the sub-wavelength metal micro-nano structure of selection such as sub-wavelength metal line style property grating, periodicity array of orifices, photon crystal structure constitute colored polarization spectro sheet, realize to liquid crystal sub-pixel monochromatic light being provided directly with the mode of high-energy utilization factor.
The overall implementation of the present invention is: white light was carried out polarization and by the sub-pixel array structure color separation before getting into liquid crystal; Be the liquid crystal sub-pixel zone polarization monochromatic light directly is provided; This crosses range request high-energy utilization factor, is specifically made up by colored polarization spectro sheet and reflector and realizes.Colored polarization spectro sheet requires to realize that polarization is selected, color is selected (being color separation) and reflective (being beam split) three functions.The preferred assembly that constitutes colored polarization spectro sheet has sub-wavelength metal line style grating, metal line style grating and has periodically sub-wavelength metal micro-nano structure combination, metal line style grating and the photon crystal structure combination etc. of array of orifices.Colored polarization spectro sheet and liquid crystal and control module thereof are formed the novel liquid crystal panel, and novel liquid crystal panel and back lighting device constitute the novel liquid crystal display mode.
The colored polarization spectro sheet of three kinds of versions of the present invention has not only utilized wherein polarization selection (polarization) function of device, has also utilized its transmission function, and promptly color is selected (color separation) function, has also utilized its reflection (beam split) function.Say that simply colored polarization spectro sheet has three big functions: polarization, color separation, beam split.The beam split function will be absorbed usually and the light that slatterns reflects away and the light that will be reflected through device utilizes again.The present invention then can abandon colored filter 8 (see figure 4)s of the prior art through directly providing red, green, blue three chromatic polarization light to ITO electrode and liquid crystal control, increases substantially the efficiency of light energy utilization simultaneously.
Below liquid crystal display of the present invention is further set forth.
Referring to accompanying drawing 2-4, the contrast that conventional liquid crystal display (call former liquid crystal display in the following text, the see Fig. 4) structural arrangement of using is provided with in liquid crystal display of the present invention (call new liquid crystal display in the following text, see Fig. 2-3) and the prior art.Light is incident from left to right.In new liquid crystal display structure, be provided with colored polarization spectro sheet of the present invention, it has reflection function, can realize the utilization again of light.In new liquid crystal display structure; Described colored polarization spectro sheet; Directly provide red, green, blue three chromatic polarization light or monochromatic polarized light to supply its control rotation respectively to the liquid crystal sub-pixel that contains the ito thin film matrix electrodes (calling liquid crystal sub-pixel in the following text); Thereby abandon the colored filter of former liquid crystal display and the polaroid of light inlet one side, and recycling is prepared against in remaining " useless light " reflection.The directly efficient outgoing red, green, blue three chromatic polarization light of colored polarization spectro sheet are corresponding one by one and be controlled by liquid crystal sub-pixel.That is each liquid crystal sub-pixel is directly controlled or the rotation of the direction of vibration of red or green or blue monochromatic polarized light; But not what control in the former liquid crystal display liquid crystal display is the rotation of the direction of vibration of polarization white mixed light, and color need be selected by colored filter independently.Therefore new liquid crystal display can be abandoned colored filter." useless light " that colored polarization spectro sheet of while also will fail to penetrate reflects back in order to utilizing again.When colored polarization spectro sheet is provided with the metallic reflection film around the pel array, it just have with liquid crystal sub-pixel outside space (part that promptly is in the light is like black surround, thin film transistor (TFT), electric capacity etc.) be one-to-one relationship.The metallic reflection film does not have wire grid construction, only plays the reflection ray effect.
Why colored polarization spectro sheet of the present invention is arranged on position of the present invention; Except the colored polarization spectro sheet of this position directly the red, green, blue three chromatic polarization light feeding matted crystal pixels control of outgoing; The colored polarization spectro sheet of this position has reflection very easily " useless light " function because be in light inlet one side of liquid crystal." useless light " only is reflected back rather than is absorbed and just be convenient to be recycled.So-called " useless light " by colored polarization spectro sheet reflection divides two kinds: a kind of is polarized light, and another kind is a nonpolarized light.Polarized light utilizes again needs polarized light conversion device.The utilization again of nonpolarized light is then fairly simple, because the homogeneity and the intensive of colored polarization spectro sheet dot structure, the retro-reflective position that only need change light of utilizing again of nonpolarized light gets final product.This colored polarization spectro sheet of will suing for peace cooperates the back lighting device of forming must realize two functions: the one, and light changes position retroeflection function, the 2nd, polarization conversion function.Perhaps realize wherein the two one of function.When colored polarization spectro sheet and reflector are combined into back lighting device, just can be easy to realize above-mentioned two functions.That is this kind back lighting device also is a polarized light conversion device simultaneously.
Between reflector and colored polarization spectro sheet, done following operation by the light of colored polarization spectro sheet reflection: see Fig. 5-6; Colored polarization spectro sheet sub-pixel reflects the monochromatic nonpolarized light of monochromatic polarized light and other two kinds of colors, metallic reflection film reflective white nonpolarized light.Become partial poolarized light after monochromatic polarized light is reflected by reflector once more, this partial poolarized light can be from the suitable sub-pixel outgoing or the part outgoing once more of other positions of colored polarization spectro sheet, and surplus light is reflected once more and gets into circulation; Monochromatic nonpolarized light will outgoing and reflection on another position on the colored polarization spectro sheet after by the reflector reflection, and reflected light gets into monochromatic polarized light circulation again.The white nonpolarized light of metallic reflection film reflection by the reflector reflection after, another position outgoing and reflection that also can be on colored polarization spectro sheet, reflected light gets into monochromatic polarized light once more and circulates with nonpolarized light.Accomplish thus that most light all is utilized except reflection loss, make that the luminous energy that is wasted more than 90% has obtained to utilize again in the prior art, light efficiency is high.
Polarization conversion principle when colored polarization spectro sheet and reflector Combination application is following:
Like Fig. 7, we can resolve into polarization direction and parallel with the vertical two parts of colored polarization spectro sheet wire grating to natural light, and the colored polarization spectro sheet of directive from left to right.
Like Fig. 8, arrive colored polarization spectro sheet after, the polarization direction is passed through with the vertical polarization light of polarization spectro sheet wire grating, and light in parallel is reflected.
Like Fig. 9, the light that is reflected back by colored polarization spectro sheet becomes partial poolarized light again through after the reflection of reflector.Partial poolarized light can be decomposed into again and parallel with the vertical two parts of colored polarization spectro sheet wire grating, and directive polarization spectro sheet from left to right once more again repeats the process of Fig. 8 to 9, so repeatedly, is fully utilized until luminous energy.
When colored polarization spectro sheet of the present invention and reflector Combination application are carried out the polarized light conversion, do not need extra increase device, simple and practical, projector compares with three-chip type, and not only light efficiency is higher, and simple in structure.The position that reflector has changed the light outgoing also lets the homogeneity of illumination be improved.
Except reflector, the colored polarization spectro sheet of the present invention do not repel with other or have the polarized light translation function or have the retroeflection function or device that the two has concurrently carries out Combination application.
When back lighting device was the LCD backlight module, this back lighting device only had the retroeflection function that changes the light position, and does not have the polarization conversion function.Light is done following operation between module backlight and colored polarization spectro sheet: colored polarization spectro sheet sub-pixel reflection direction of vibration and wiregrating direction monochromatic polarized light in the same way and other dichromatism nonpolarized light, metallic reflection film reflective white nonpolarized light.Monochromatic polarized light can't be from wiregrating outgoing once more because of no polarized light conversion device.The dichromatism nonpolarized light will change the light ray propagation direction under the effect of even tabula rasa in addition, will be in another position outgoing and reflection of wiregrating after reflecting through reflector.Reflected light gets into circulation again.The white nonpolarized light of metallic reflection film reflection under the effect of even tabula rasa and reflector, another position outgoing and reflection that also can be on wiregrating, reflected light gets into circulation once more.The polarized light that accounts for 50% luminous energy of direction of vibration and wiregrating direction quadrature all is utilized the overwhelming majority thus.
Wire grating array in the colored polarization spectro sheet of the present invention, and metallic reflection film, metallic diaphragm on array of orifices, the defect structure on the photon crystal material rete all can be through maturation physical method one-shot formings such as plated film, photoetch, nano impression press mold directly be made on the glass or transparent plastic sheet or other transparency carriers of liquid crystal display, makes colored filter more of the prior art and wants easily a lot.Cancel the polaroid of colored filter and light inlet one side simultaneously, also reduced cost.
Compare with polaroid, its linear polarization of the polarized light of wire grating outgoing Du Genggao, the polaroid that therefore adopts colored polarization spectro sheet of the present invention to replace light inlet one side can also improve the contrast in the liquid crystal display well.
Though colored filter 8 (see figure 4)s can be abandoned, in the liquid crystal indicator mode that the present invention provides, also can not repel its existence.
When display requirement is monochrome or black and white; Colored polarization spectro sheet of the present invention should be single dot structure array; If but when neglecting the problem that is in the light around the liquid crystal sub-pixel simultaneously; Single pixel wire grating array can extend each other and joins and form an integral body, becomes the common metal wire grating type polarization spectro sheet as a full slice system.This moment, it should be regarded as a kind of specific form of colored polarization spectro sheet, and not as the restriction to Seeking for Right of the present invention.
The light source optimal selection of liquid crystal indicator of the present invention is a led light source, but when adopting the reflector lattice plane, back lighting device does not repel light source outside reflector.Liquid crystal display of the present invention and liquid crystal indicator are applicable to LCD TV, LCD, projection etc.
Description of drawings
Fig. 1 is colored polarization spectro chip architecture synoptic diagram.
Fig. 2 is a kind of structural representation of liquid crystal display of the present invention.
Fig. 3 is the another kind of structural representation of liquid crystal display of the present invention.
Fig. 4 is a kind of structural representation of liquid crystal display of the prior art.
The light that Fig. 5 sends for light source in the liquid crystal indicator of the present invention is through reflector reflection back arrival liquid crystal display and the operation synoptic diagram after being reflected.
The direct directive liquid crystal display of light that Fig. 6 sends for light source in the liquid crystal indicator of the present invention and be reflected after the operation synoptic diagram.
Fig. 7-9 is a polarized light transfer principle synoptic diagram.
Figure 10 is the liquid crystal indicator structural representation that a plurality of reflector arrays and liquid crystal display constitute.
Embodiment
Following with reference to accompanying drawing, further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not constitute restriction to its right.
Embodiment 1.With reference to Fig. 1-10.A kind of liquid crystal display; Comprise glass substrate 3, ITO electrode 5, liquid crystal 6 and polaroid 7; It is characterized in that; Between the glass substrate 3 of light inlet one side and ITO electrode 5, be provided with colored polarization spectro sheet 4, set gradually liquid crystal 6, ITO electrode 5, glass substrate 3 and polaroid 7 at these ITO electrode 5 opposite sides; Perhaps between the ITO electrode 5 of light inlet one side and liquid crystal 6, be provided with colored polarization spectro sheet 4, set gradually ITO electrode 5, glass substrate 3 and polaroid 7 at liquid crystal 6 opposite sides; Described colored polarization spectro sheet 4 has pel array; Each pixel contains three subpixels or is single pixel; Three subpixels are made up of difference width and the wire grating in cycle 1 respectively; Three subpixels respectively with liquid crystal display in the red, green, blue sub-pixel be one-to-one relationship, single pixel also is made up of wire grating 1, pixel is one-to-one relationship in single pixel and the liquid crystal display.
Embodiment 2.Embodiment 1 described a kind of liquid crystal display, the direction of wire grating 1 has same tropism.
Embodiment 3.Embodiment 1 or 2 described a kind of liquid crystal displays, said colored polarization spectro sheet adopts following structure: it is by comprising wire grating 1 at least and having periodically the colored filter of the sub-wavelength metal micro-nano structure of array of orifices and form.
Embodiment 4.Embodiment 1 or 2 described a kind of liquid crystal displays, said colored polarization spectro sheet adopts following structure: it is by comprising that at least wire grating 1 and the colored filter that contains photon crystal structure form.
Embodiment 6.A kind of liquid crystal indicator of being made up of embodiment 1 or 2 described liquid crystal displays, it comprises back lighting device and embodiment 1 or 2 or 3 or 4 or 5 described liquid crystal displays 9.
Embodiment 9.In embodiment 8 described liquid crystal indicators, between reflector 10 and colored polarization spectro sheet 4, be provided with light-passing board.
Claims (10)
1. liquid crystal display; Comprise glass substrate (3), ITO electrode (5), liquid crystal (6) and polaroid (7); It is characterized in that; Between the glass substrate (3) of light inlet one side and ITO electrode (5), be provided with colored polarization spectro sheet (4), set gradually liquid crystal (6), ITO electrode (5), glass substrate (3) and polaroid (7) at this ITO electrode (5) opposite side; Perhaps between the ITO electrode (5) of light inlet one side and liquid crystal (6), be provided with colored polarization spectro sheet (4), set gradually ITO electrode (5), glass substrate (3) and polaroid (7) at liquid crystal (6) opposite side; Described colored polarization spectro sheet (4) has pel array; Each pixel contains three subpixels or for single pixel, and three subpixels are respectively by difference width and the wire grating in cycle (1) formation, three subpixels respectively with liquid crystal display in the red, green, blue sub-pixel be one-to-one relationship; And polarization monochromatic light is provided for it; Single pixel also is made up of wire grating (1), and pixel is one-to-one relationship in single pixel and the liquid crystal display, and for it polarization monochromatic light is provided.
2. a kind of liquid crystal display according to claim 1 is characterized in that: the direction of described wire grating (1) has same tropism.
3. a kind of liquid crystal display according to claim 1 is characterized in that: said colored polarization spectro sheet adopts following structure: it is formed by comprising wire grating (1) at least and having periodically the colored filter of the sub-wavelength metal micro-nano structure of array of orifices.
4. a kind of liquid crystal display according to claim 1 is characterized in that: said colored polarization spectro sheet adopts following structure: it is made up of the colored filter that comprises wire grating (1) at least and contain photon crystal structure.
5. according to claim 1 or 2 or 3 or 4 described liquid crystal displays, it is characterized in that, around the pel array of colored polarization spectro sheet, be provided with metallic reflection film (2).
6. a liquid crystal indicator of being made up of any one described liquid crystal display of claim 1-4 is characterized in that, it comprises back lighting device and claim 1 or 2 or 3 or 4 described liquid crystal displays (9).
7. liquid crystal indicator according to claim 6 is characterized in that, described back lighting device is the LCD backlight module that modulated structure is beaten on the limit.
8. liquid crystal indicator according to claim 6 is characterized in that, described back lighting device is reflector (10), and described reflector (10) is single reflector (10) or several reflectors (10) composition lattice plane of serving as reasons.
9. liquid crystal indicator according to claim 8 is characterized in that, between reflector (10) and colored polarization spectro sheet (4), is provided with light-passing board.
10. liquid crystal indicator according to claim 9 is characterized in that, described light-passing board is even tabula rasa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102650237A CN101963719B (en) | 2010-01-26 | 2010-08-20 | Liquid crystal display and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010113219.4 | 2010-01-26 | ||
| CN201010113219 | 2010-01-26 | ||
| CN2010102650237A CN101963719B (en) | 2010-01-26 | 2010-08-20 | Liquid crystal display and liquid crystal display device |
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| Publication Number | Publication Date |
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| CN101963719A CN101963719A (en) | 2011-02-02 |
| CN101963719B true CN101963719B (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102650237A Expired - Fee Related CN101963719B (en) | 2010-01-26 | 2010-08-20 | Liquid crystal display and liquid crystal display device |
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| WO (1) | WO2011091556A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325814B (en) * | 2013-05-28 | 2015-08-26 | 中国科学院上海高等研究院 | A kind of OLED pixel and apply the display floater of this OLED pixel |
| CN104280889B (en) * | 2014-10-27 | 2016-08-31 | 京东方科技集团股份有限公司 | A kind of 3D display device and 3D display device |
| CN104459863A (en) | 2014-12-04 | 2015-03-25 | 京东方科技集团股份有限公司 | Wire gating polaroid, manufacturing method of wire gating polaroid, display panel and display device |
| CN105572955A (en) * | 2016-02-24 | 2016-05-11 | 京东方科技集团股份有限公司 | Array substrate, making method thereof, display panel and touch panel |
| CN106547146A (en) * | 2017-01-22 | 2017-03-29 | 京东方科技集团股份有限公司 | Dot structure and its manufacture method, array base palte and display device |
| TWI673544B (en) * | 2018-05-09 | 2019-10-01 | 友達光電股份有限公司 | Display panel and electronic device comprising thereof |
| US20200012028A1 (en) * | 2018-07-03 | 2020-01-09 | Innolux Corporation | Electronic device |
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| US6040807A (en) * | 1993-11-15 | 2000-03-21 | Sanyo Electric Co., Ltd. | Three-dimensional display |
| CN1428628A (en) * | 2001-12-25 | 2003-07-09 | 邵剑心 | Polarization converter device for liquid crystal projection display and its preparation method |
| CN101063757A (en) * | 2006-04-28 | 2007-10-31 | 联诚光电股份有限公司 | Reflexion type monocrystalline silicon LCD panel |
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| KR20070010472A (en) * | 2005-07-19 | 2007-01-24 | 삼성전자주식회사 | Hybrid type polarizer, method for manufacturing thereof and display device having the same |
| JP5426071B2 (en) * | 2006-11-14 | 2014-02-26 | チェイル インダストリーズ インコーポレイテッド | Liquid crystal display |
| JP2009031392A (en) * | 2007-07-25 | 2009-02-12 | Seiko Epson Corp | Wire-grid type polarizing element, method for manufacturing the same, liquid crystal device, and projection display device |
| CN101743433B (en) * | 2008-01-23 | 2013-01-16 | 松下电器产业株式会社 | Wavelength separator, planar illumination device and liquid crystal display device using the wavelength separator |
| JP5420859B2 (en) * | 2008-06-12 | 2014-02-19 | 旭化成イーマテリアルズ株式会社 | Composite wire grid polarizer and manufacturing method thereof |
| CN101551482B (en) * | 2009-01-24 | 2010-12-08 | 苏州大学 | Color filtering disc with subwavelength grating structure and manufacturing method thereof |
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2010
- 2010-03-26 WO PCT/CN2010/000385 patent/WO2011091556A1/en active Application Filing
- 2010-08-20 CN CN2010102650237A patent/CN101963719B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040807A (en) * | 1993-11-15 | 2000-03-21 | Sanyo Electric Co., Ltd. | Three-dimensional display |
| CN1428628A (en) * | 2001-12-25 | 2003-07-09 | 邵剑心 | Polarization converter device for liquid crystal projection display and its preparation method |
| CN101063757A (en) * | 2006-04-28 | 2007-10-31 | 联诚光电股份有限公司 | Reflexion type monocrystalline silicon LCD panel |
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| Publication number | Publication date |
|---|---|
| WO2011091556A1 (en) | 2011-08-04 |
| CN101963719A (en) | 2011-02-02 |
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