CN107255889A - A kind of liquid crystal display device - Google Patents
A kind of liquid crystal display device Download PDFInfo
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- CN107255889A CN107255889A CN201710674991.5A CN201710674991A CN107255889A CN 107255889 A CN107255889 A CN 107255889A CN 201710674991 A CN201710674991 A CN 201710674991A CN 107255889 A CN107255889 A CN 107255889A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133621—Illuminating devices providing coloured light
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
A kind of liquid crystal display device that the present patent application is provided, including liquid crystal panel, the liquid crystal panel includes quantum dot colour element layer, upper polarizer, liquid crystal switch cell and the lower polarizer being cascading, and the quantum dot colour element layer includes red sub-pixel unit, green sub-pixels unit and blue subpixels unit.The display device also includes being arranged on the backlight module below the liquid crystal panel, the backlight module includes backboard and the luminescent device being arranged on the backboard, and the luminescent device includes LED and the Collimation optics being arranged on above the LED.According to the conspicuous invariant of drawing, by setting Collimation optics above LED, make beam projecting aperture increases, reduce so as to the rising angle of backlight, light realizes a certain degree of collimation outgoing, and then improves liquid crystal panel when being shown picture because of color cross-talk problem the larger pixel brought of backlight rising angle.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of liquid crystal display device.
Background technology
In a kind of new display mode of current LCD TV, traditional liquid crystal is directly replaced using quantum dot colour element layer
Colour filter in panel, mainly includes red sub-pixel unit, green sub-pixels unit and blue subpixels unit, wherein, it is red
Sub-pixels unit sets red quantum dot material；Green sub-pixels unit sets green quanta point material；Blue subpixels list
Member is not provided with quanta point material or sets blue quanta point material.When Blue backlight is radiated at three kinds of pixel cells of red, green and blue
When upper, Blue backlight is directed through launching blue light in blue subpixels unit；Quanta point material in green sub-pixels unit is inhaled
The quanta point material that receipts blue light is converted into green glow, red sub-pixel unit absorbs blue light and is converted into feux rouges.
Because quanta point material is when being stimulated transmitting fluorescence, physical conduction property and the polarization direction of light can be changed,
When being excited in particular by polarized blue light, the fluorescence of quanta point material transmitting is unpolarized state, as a result, quantum dot
Liquid crystal panel prepared by material is different, it is necessary to carry out polarizer position from traditional colored filter liquid crystal panel structure prepared
Adjustment, liquid crystal panel is cascading for quantum dot colour element layer, upper polarizer, liquid crystal layer and lower polarizer.
Wherein, upper polarizer, liquid crystal layer, three layers of lower polarizer, which fit together, is mainly used in the light that control passes through light
By force, quantum dot colour element layer receives exciting for varying strength light, and the color for producing different brightness is shown.The present inventor is in reality
Found during existing above-mentioned liquid crystal panel, because backlight light extraction has certain dispersion angle, and upper polarizer is placed at quantum dot
New quantum dot panel construction between colour element layer and liquid crystal layer, because its structure changes, can bring quantum dot liquid
In crystal panel between different pixels color crosstalk serious problems.
Color cross-talk specifically can refer to shown in Fig. 1 between pixel, exemplified by showing green sub-pixels, green sub-pixels unit
122 liquid crystal switch cells for corresponding to liquid crystal layer 111 are in the state opened, red sub-pixel unit 121 and blue subpixels list
First 123 corresponding liquid crystal switch cells are closed, however, the backlight rising angle that provides of backlight luminescence device 100 compared with
Greatly, Blue backlight is after lower polarizer 110, liquid crystal layer 111 are handled with upper polarizer 112, and the larger light of dispersion angle still may be used
It is irradiated at adjacent red sub-pixel unit 121 and blue subpixels unit 123, to cause red sub-pixel unit 121
Blue backlight can be received through and excite generation feux rouges, and be directed through by the light of blue subpixels unit 123, so that
For showing that the excitation line of green pixel can enter in other adjacent color sub-pixels units, doped with red during display green
With blueness, and then excitation is reduced.Similarly, the problem of red sub-pixel and sub- blue pixel can also have color cross-talk.
For color cross-talk problem between above-mentioned pixel, mainly using black matrix" between each sub-pixel (i.e. BM areas) with prevention
Light crosstalk between adjacent subpixels.In order to improve the prevention efficiency of black matrix", conventional alternative selects two methods solution：1st, it is straight
Connect increase each sub-pixel between black matrix" width, expand black matrix" to divergent rays prevent scope；2nd, quantum dot is reduced
Upper polarizer and other substrate layer equal thickness between colour element layer and liquid crystal layer, to reduce divergent rays in the horizontal direction
Offset distance so that offset distance so, is more beneficial for black matrix" to prevent adjacent son in the range of black matrix" prevention
Light crosstalk between pixel.
But, on the one hand, it is Display Technique common demands actually to lift display brightness, and especially resolution ratio is being improved constantly
In the case of, the ratio that display pixel area accounts for viewing area is constantly reduced, and causes display brightness further to reduce, thus, to carry
High display brightness then needs to increase liquid crystal panel effective display area accounting, correspondingly needs to reduce black matrix" between pixel as far as possible
Accounting, so, industry common practice is to need improved technology to reduce black matrix" size to lift display brightness；It is another
Aspect, polarizer is usually a kind of composite film structure, and its thickness is generally higher than 100 microns, typically by improving preparation technology
And material further reduces its thickness, but its improvement difficulty is very big.Under normal circumstances, the width in existing conventional BM areas can reach
20 microns or less, relatively in available liquid crystal display device for the polarizer of known thickness, the BM areas pair of its existing width
The buffer action of adjacent pixel light is limited, even if breaking through the structural form or preparation technology of polarizer to reduce its thickness,
It is difficult to effectively solve the problems, such as that polarizer gauge strips carry out the influence of color cross-talk.
The content of the invention
In order to improve in the prior art, liquid crystal panel to picture when showing, due to the larger pixel brought in backlight luminescence angle
Between color cross-talk problem, the present patent application provides a kind of liquid crystal display device.
A kind of liquid crystal display device, including liquid crystal panel and backlight module, wherein, the liquid crystal panel includes：Liquid crystal layer,
Side configuration upper polarizer corresponding with downside and lower polarizer, and quantum dot colour element layer on the liquid crystal layer, the amount
Sub- point colour element layer configuration is above the upper polarizer, and quantum dot colour element layer is spaced including several
Multiple color sub-pixel unit and the black matrix" between the sub-pixel unit；
The backlight module includes luminescent device, Collimation optics and other backlight assemblies, wherein, the photophore
Part is used to provide light needed for the liquid crystal panel display image, and the Collimation optics are to the luminescent device emergent ray
Carry out collimation processing.
Compared with prior art, the advantageous effects for the technical scheme that the embodiment of the present application is proposed include：
A kind of liquid crystal display device that the present patent application is provided, including liquid crystal panel, the liquid crystal panel include layer successively
Folded quantum dot colour element layer, upper polarizer, liquid crystal switch cell and the lower polarizer set, the quantum dot colour element layer
Including red sub-pixel unit, green sub-pixels unit and blue subpixels unit.The display device is also described including being arranged on
Backlight module below liquid crystal panel, the backlight module includes backboard and the luminescent device being arranged on the backboard, described
Luminescent device includes LED and the Collimation optics being arranged on above the LED.It is conspicuous constant according to drawing
Amount, by setting Collimation optics above LED, makes beam projecting aperture increases, so that the beam angle of backlight
Degree reduces, and light realizes a certain degree of collimation outgoing, and then improves liquid crystal panel when being shown to picture because backlight goes out
Color cross-talk problem between the larger pixel brought of angular.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the present invention
Example simultaneously is used to explain principle of the invention together with specification.
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is technology, the accompanying drawing used required in description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is color cross-talk schematic diagram between pixel in the prior art；
Fig. 2 be the application one embodiment in a kind of structural representation of liquid crystal display device is provided；
Fig. 3 is the optical display principle schematic diagram of liquid crystal display device in the application one embodiment；
Fig. 4 is the uniformity optical principle schematic diagram in the application one embodiment；
Fig. 5 is to provide a kind of liquid crystal display device in the application another embodiment；
Fig. 6 is to provide a kind of structural representation of luminescent device in the application another embodiment；
Fig. 7 is the light path distribution schematic diagram of luminescent device in another embodiment in the application；
Fig. 8 is the improved optics effect diagram of liquid crystal display device in the application another embodiment；
Fig. 9 provides a kind of structural representation of variation for luminescent device in the application another embodiment；
Figure 10 is a kind of light path distribution schematic diagram of luminescent device variation in the application another embodiment；
Figure 11 is the back light module unit structure schematic diagram for providing a kind of liquid crystal display device in applying in further embodiment；
Figure 12 be the application further embodiment in a kind of structural representation for expanding plate embodiment is provided；
Figure 13 be the application further embodiment in a kind of structural representation of collimating plate embodiment is provided；
Figure 14 is a kind of a kind of variation of liquid crystal display device in Figure 11.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
In the description of the invention, it is to be understood that, the indicating position such as " on ", " under ", " level ", " vertical " or position are closed
The term of system is that, based on orientation shown in the drawings or position relationship, the description present invention merely for convenience is described with simplified, without
It is that instruction or the signified device of hint or element there must be specific orientation, is constructed and operated with specific orientation, because
This is not considered as limiting the invention.Term " first ", " second ", " the 3rd " are only used for describing purpose, without being understood that
For indicate or imply relative importance or it is implicit indicate or imply include one or more technical characteristic.
As shown in Fig. 2 liquid crystal display device 200, including liquid crystal panel and backlight module.
Liquid crystal panel includes：Liquid crystal layer 210, in the upper side and lower side of liquid crystal layer 210, correspondence configures upper polarizer 211 and lower inclined
Shake piece 212, and quantum dot colour element layer 220.
Wherein, liquid crystal molecule in each pixel correspondence liquid crystal switch cell is controlled by TFT drive circuits in liquid crystal layer 210
Torsional direction, coordinate upper polarizer 211 and lower polarizer 212 to control to transmit the light quantity of each pixel.
And quantum dot colour element layer 220, quantum dot colour element layer 220 are configured with the upper surface of upper polarizer 211
Including black matrix" 224 between several spaced multiple color sub-pixel units and each sub-pixel unit, wherein,
Black matrix" 224 is used to absorb light, to prevent light crosstalk between each adjacent subpixels unit, each sub-pixel unit difference
Generation fluorescence or directly transmission can be excited by the excitation line transmitted, the light of corresponding color needed for producing.
Multiple color sub-pixel unit includes red sub-pixel unit 221, green sub-pixels unit 222 and blue subpixels
Unit 223.Certainly, needed to improve display effect, other color sub-pixels units can also be set, such as：White sub-pixels list
First (not shown in Fig. 2).
Example, during using blue luminescent device, excited according to quantum dot in principle of luminosity, green sub-pixels unit 222
It is packaged with green quanta point material, and red sub-pixel unit 221 and is packaged with red quantum dot material, blue subpixels list
Member 223 can allow blue excitation light directly to transmit, and other blue quanta point materials can be also encapsulated as required.Of course, it is possible to adopt
With wavelength is shorter and other stronger exciting lights of energy are as luminescent device, such as：Ultraviolet light etc..
Backlight module includes luminescent device 230 and other backlight assemblies, wherein, luminescent device shows for providing liquid crystal panel
Diagram light as needed for.The related structure member of the present application is only shown in this application, to illustrate the application in embodiment
Specific implementation process, those skilled in the art can be arranged as required to the backlight assemblies such as other optical modules, such as：Optical substrate
And other blooming pieces etc.；And the Collimation optics or proliferation part specifically set in the application other embodiment etc..
It is to avoid transmission as far as possible to ensure will not occur color cross-talk problem between each color sub-pixels unit
Light enters in its adjacent sub-pixel unit after the corresponding liquid crystal switch cell of each sub-pixel unit, prevents light between each sub-pixel
The mutual crosstalk of line.As shown in figure 3, entering for the light for preventing the correspondence liquid crystal switch cell of red sub-pixel unit 221 from being controlled
In blue subpixels unit 223 or green sub-pixels unit 222 so that from the corresponding liquid crystal shutter list of red sub-pixel unit 221
It must not be entered in member with maximum angle emergent ray in adjacent green sub-pixels 222.
Therefore, it is possible in order to reduce light crosstalk between each sub-pixel, then from the dispersion angle of liquid crystal layer emergent ray
φ 1 needs to meet formula requirement：1≤arctan of φ (L/H1), as shown in figure 3, L is black matrix between each sub-pixel unit
Width, H1 for liquid crystal layer upper surface to quantum dot colour element layer lower surface height.Wherein, when black matrix" width not
Meanwhile, L is the minimum widith of the black matrix" between each sub-pixel unit.
As knowable to above-mentioned formula, in order to expand the effective span of dispersion angle φ 1 maximum of emergent ray, root as far as possible
Understood according to above-mentioned formula, it is possible to increase the width L of black matrix" between each sub-pixel unit, or reduce the upper surface extremely amount of liquid crystal layer
The height H1 of son point colour element layer lower surface.But, inventor has found, the liquid crystal panel of the higher resolution such as especially 4K or 8K
In, the area accounting of black matrix", which has become, influences the display efficiency key factor of above-mentioned high-resolution liquid crystal panel, especially
The technical bottleneck that display brightness is broken through for needs, it is necessary to by the width control system of black matrix" in below 100um, or even pursue extremely
Below 20um preparation technologies.
Further, in order to reduce liquid crystal layer upper surface to the height H1 of quantum dot colour element layer lower surface, by existing
The bottleneck limitation of polarizer preparation technology and material, usual H1 is 100~900um.If preparing the polarization that thickness is below 100um
Piece is, it is necessary to break through the technical bottleneck for preparing material and technique of existing polarizer, even if it prepares material and technique, even structure
There is important breakthrough, for continuing to improve black matrix" with reduced width, the dispersion angle φ 1 to expanding emergent ray
The effect of maximum span is also limited, therefore, will be limited in smaller range from the dispersion angle of liquid crystal layer emergent ray
For a kind of effective solution.
Therefore, the present inventor is by a large amount of research and development experiments, to seek to effectively reduce the angle of divergence from liquid crystal layer emergent ray
Spend φ 1 effective solution.Wherein, in experimentation, inventor has found display resolution, display brightness and light
Relation between the threes of outgoing dispersion angle φ 1, color cross-talk, which is produced, influences extremely complex, is would know that by simple inference
A kind of linear relationship.Such as when liquid crystal panel resolution ratio is improved, its display brightness can be carried because black matrix" area accounting is relative
Height can cause display brightness to reduce, under this condition, do not occur according to regular logical reasoning above-mentioned L and H1 it is constant, therefore, φ 1
Maximum possible value will not also change, and then crosstalk ratio will not change.However, inventor has found in actual experiment,
When display resolution is improved to a certain degree, color cross-talk problem can be aggravated, and illustrate that the maximums of dispersion angle φ 1 of emergent ray take
Value scope is but relatively reduced.
Further, using reducing from the dispersion angle φ 1 of liquid crystal layer emergent ray some solutions, however,
Inventor has found in experimentation, and when the dispersion angle φ 1 of liquid crystal layer emergent ray reduces, display brightness uniformity can go out
Existing obvious corruptions.Therefore, in inventor's experimentation, the display brightness uniformity for keeping liquid crystal panel and raising are faced again
From contradiction between the dispersion angle φ 1 of liquid crystal layer emergent ray, as needing to solve another technical barrier.
As shown in figure 3, exemplified by using dot matrix luminescent device as the down straight aphototropism mode set of luminescent device 230, wherein, hair
Optical device 230 is laid in below liquid crystal panel, such as LED.In order to reach that backlight illumination to liquid crystal layer is uniform mesh
, then needing multiple LEDs to expose to liquid crystal layer has preferable mixed light characteristic.
As shown in figure 3, when the light of LED is incident to liquid crystal panel lower surface, the divergence of beam angle φ
2, then need to meet 2 >=arctan of φ (0.5*D/H2), wherein, D is the center spacing of two neighboring luminescent device light-emitting area,
H2 is distance of any luminescent device light-emitting area to liquid crystal panel lower surface.
In summary, on the one hand, in order to mitigate color cross-talk between a variety of colors sub-pixel, then need to reduce from liquid crystal layer
The dispersion angle of surface emergent ray, on the other hand, keeps directive liquid crystal panel lower surface glazing illuminance uniformity, then needs again
Improve the dispersion angle of luminescent device emergent ray.Therefore, in order to solve technical contradiction between two aspects, technology bottle is broken through
Neck, dispersion angle φ 2 when the light of luminescent device is incident to liquid crystal panel then needs to meet arctan (0.5*D/H2)≤φ 2
≤arctan(L/H1)。
Example, work as L=20um, during H1=100um, arctan (L/H1)=11.3 °, then, make luminescent device light
From the maximum dispersion angle during outgoing of liquid crystal layer upper surface, it is necessary in the range of 1≤11.3 ° of 0≤φ value.And in order to improve
Display panel uniformity, preferably, then φ 2 takes maximum in the spans of φ 1, so, the values of φ 2 can be 11.3 °, i.e.,：
So that arctan (0.5*D/H2)=11.3 °, then D/H2 maximums can value be 0.4, its can for design backlight module mixed light away from
From and lamp spacing parameter provide foundation.Designer can select the bright of suitable LED in the range of D/H2≤0.4
Metric lattice to meet brightness design requirement, and the suitable LED of selection dispersion angle, or appropriate backlight structure with
The dispersion angle of emergent ray is limited, the lamp space D between LED is rationally designed on the basis of above-mentioned selection and this lights
Device is to the light mixing distance H2 between liquid crystal panel lower surface, to realize that maximum possible optimizes product display performance.
Further, inventor is had found in product design process, when selecting a kind of liquid crystal panel, how for liquid crystal surface
Plate designs the backlight module for meeting performance requirement, usually a kind of to need the actual technical problem solved.
The first step：Need by liquid crystal panel parameter, it is determined that from the maximum possible dispersion angle φ of liquid crystal layer emergent ray
1max, i.e.,：Meet φ 1max=arctan (L/H1) relation.
Second step：So that luminescent device light is incident to dispersion angle φ 2≤φ 1max of liquid crystal layer, that is, meet φ 2≤
arctan(L/H1)。
3rd step：Because the minimum values of φ 2 are determined by arctan (0.5*D/H2), as such, it is desirable to meet arctan
(0.5*D/H2)≤arctan (L/H1), i.e.,：D/H2≤2*L/H1.
In the present embodiment, L is the width of black matrix between each sub-pixel, and H1 is that liquid crystal layer upper surface is colored to quantum dot
The height of pixel layer lower surface, by the confirmable parameter L and H1 of liquid crystal panel, the back of the body is determined with formula D/H2≤2*L/H1
The mixed light characteristic of optical mode group, mixed light characteristic is parameter D and H2 relation, wherein, D is in two neighboring luminescent device light-emitting area
In the heart away from, H2 for any luminescent device light-emitting area to liquid crystal panel lower surface distance.
Further, as shown in figure 4, uniformity in order to ensure receiving plane illumination, two adjacent luminescent devices are connecing
The range of exposures in receipts face must have B regions in certain overlapping ranges, such as figure.
It is described as follows by taking Fig. 4 as an example：When single luminescent device is shone directly on liquid crystal panel, in the liquid crystal panel
Upper a certain target point illuminance is directly proportional to the luminous intensity of the luminescent device, with the luminescent device surface between the target point
Distance square is inversely proportional, and the normal and the target point illumination beam with the luminescent device light-emitting area form angle
Cosine is directly proportional, i.e.,：Target point illuminance E (φ) meets formula：E (φ)=I (φ) * cos φ/d2, wherein, I (φ) is
The light distribution of luminescent device, φ is that the normal with the luminescent device light-emitting area and the target point illumination beam are formed folder
Angle, d is the luminescent device light-emitting area to distance between the target point.
In such as Fig. 4, example, some optics illumination in the A of region：E (φ)=I (φ) * cos φ/d2, wherein, d=H/
Cos φ, H are the distance between the luminescent device light-emitting area and the liquid crystal panel lower surface, therefore, can obtain E (φ)=I (φ)
*cosφ/d2=I (φ) * cos3φ/H2。
It is described as follows so that show uniformity requirement reaches more than 70% as an example, if the uniformity of whole light receiving surface will
Meet 70% requirements above.
On the one hand, if line center between two luminescent devices just to light receiving surface position at be dark
Region, then the illuminance of its single luminescent device received is, it is necessary to reach 0 ° of emergent ray correspondence light receiving surface of luminescent device
Illumination E0 more than 35%, so, the superposition illuminance of center position of two luminescent devices at line can then reach
To more than the 70% of E0.
Then need to meet following condition：E (φ) >=0.5*70%*E (0 °), i.e.,：I(φ)*cos3φ/H≥0.35*I
(0 °)/H2, simplified：I(φ)*cos3φ >=0.35*I (0 °), φ maximum φ max can be tried to achieve according to above-mentioned formula, then I
(φmax)*cos3φ max=0.35*I (0 °).
On the other hand, the line center of two luminescent devices just to light receiving surface position at be light brighter areas
When, then the illumination E0 of 0 ° of emergent ray correspondence receiving plane of luminescent device, will reach the line center of two luminescent devices just
To receiving plane position at illumination more than 70%.
Then need to meet following condition：E (φ)≤0.71*E (0 °), i.e.,:I(φ)*cos3φ/H2≤0.71*I (0°)/
H2, simplified：I (φ) * cos3 φ≤0.71*I (0 °), φ minimum value φ min can be tried to achieve according to above-mentioned formula, then I (φ
Min) * cos3 φ min=0.71*I (0 °).
In summary, if the light distribution of luminescent device is I (φ), and show uniformity is when requiring more than a%, then two
Beam emissions angle is φ to center position correspondence of the individual luminescent device at line at target point on the receiving plane in unitary face, then
Meet formula：I(φmax)*cos3φ max=0.5*a%*I (0 °), and I (φ min) * cos3φ min=0.5/a%*I
(0°)。
Further, if being illustrated exemplified by LED, LED luminous energy is lambertian distribution, then
I (φ)=I0* cos φ, wherein, I0For 0 ° of luminous direction light light intensity value, it is a fixed value, then receiving plane receives list
The Illumination Distribution of individual LED is E (φ)=I (φ) * cos3φ/H=I0*cos4φ/H。
Illustrated by taking Fig. 3 as an example, more than 70% is reached if realizing and receiving surface uniformity, need to meet：
E (φ 1) >=35%*E (0 °), i.e.,：Cos4 φ 1 >=0.35, try to achieve 39.5 ° of φ 1max ≈, then and 0.5*D/H2≤
Tan39.5 ° of ≈ 0.82, i.e. D/H2≤1.64.
And E (φ 1)≤0.71%*E (0 °) is cos4 φ 1≤0.71, tries to achieve 23.5 ° of φ 1min ≈, then 0.5*D/
H2 >=tan23.5 ° of ≈ 0.43, i.e. D/H2 >=0.86.
Therefore, if luminescent device luminous energy is lambertian distribution, the mixed light characteristic of backlight module needs to meet：0.86
≤ D/H2≤1.64, wherein D are the center spacing of two neighboring luminescent device light-emitting area, and H2 is the light-emitting area of any luminescent device
To the distance of liquid crystal panel lower surface.
As in Fig. 2, being irradiated to illuminance uniformity on liquid crystal panel to further improve luminescent device 230, and to the greatest extent may be used
The incident angle for being incident to the liquid crystal layer glazed thread can be reduced, to mitigate the mutual cross-interference issue of color between pixel, the application is implemented
In the liquid crystal display device of example, the Collimation optics for luminescent device emergent ray collimate pretreatment are set, and it is right
Emergent ray energy realizes that diffusion is homogenized from the Collimation optics, and the illumination on light receiving surface can be made more uniformly to divide
Cloth, so that D/H2Value can increase by more than 2~3 times, therefore, in the liquid crystal display device using Collimation optics, can meet
1.72≤D/H2≤4.92。
The Collimation optics are for divergent rays to be become to a kind of optics close to parallel rays, such as convex lens
Deng.
It should be noted that in the liquid crystal display that increase collimates processing to luminescent device emergent ray, on the one hand,
Can make luminescent device design have more greatly can design space, the Energy distribution of luminescent device emergent ray is diffused even
Change, improve the show uniformity of liquid crystal display device, on the other hand, due to carrying out collimation processing to luminescent device emergent ray,
So that diminishing from liquid crystal layer emergent ray dispersion angle, color cross-talk problem between each pixel can be reduced.
For the parameter request of Collimation optics in further specification the present embodiment, as shown in Figure 3, it is desirable to from photophore
After part light carries out collimation processing through Collimation optics, beam projecting angle φ 3 needs to meet：3≤arctan of φ (L/H1),
Wherein, L is the width of black matrix between each sub-pixel, H1 for liquid crystal layer upper surface to quantum dot colour element layer lower surface
Highly.
Further, as shown in figure 5, display device includes liquid crystal panel 500 and the backlight module for providing backlight
400, liquid crystal panel 500 is relative with backlight module 400, and liquid crystal panel 500 is arranged on the top of backlight module 400.
Liquid crystal panel 500 includes quantum dot colour element layer 520, upper polarizer 512, the liquid crystal layer being cascading
511 and lower polarizer 510, quantum dot colour element layer 520 include several spaced multiple color sub-pixel units and
Black matrix" between each color sub-pixels, wherein, multiple color sub-pixel unit includes red sub-pixel unit 521, green
Sub-pixel unit 522 and the unit of blue subpixels 523, wherein, red sub-pixel unit 521 sets red quantum dot material, green
Sub-pixels unit 522 sets green quanta point material, and blue subpixels unit 523 is not provided with quanta point material or sets blueness
Quanta point material.
Luminescent device is carried on the back according to blueness, then Blue backlight is after the processing of lower polarizer 510, by liquid crystal layer 511
Each liquid crystal switch cell switch control process, then be radiated at through upper polarizer 512 on three kinds of pixel cells of red, green and blue,
Red quantum dot material in red sub-pixel unit 521, which absorbs blue light, can be converted into feux rouges, green sub-pixels unit 522
In green quanta point material absorb blue light and can be converted into green glow, blue subpixels unit 523 that Blue backlight can be direct
Through transmitting blue light.Upper polarizer 512, liquid crystal layer 511,510 3 layers of lower polarizer, which fit together, is mainly used in control institute thoroughly
The light intensity of light is crossed, quantum dot colour element layer receives exciting for varying strength light, and the color that can produce different brightness is shown.
Backlight module 400 includes backboard 420 and the multiple luminescent devices 410 being arranged on above backboard, wherein, the present embodiment
The concrete structure of middle luminescent device 410 can refer to shown in Fig. 6, including LED 200 and Collimation optics 300, optics
Collimating element 300 is arranged on the top of LED 200.
Collimation optics 300 include support frame 310 and the collimater 320 between support frame, collimation in the present embodiment
Device 320 includes incidence surface 321 and exiting surface 322.Wherein, incidence surface 321 and exiting surface 322 are circumferentially symmetrical respectively.
Wherein, on the incidence surface 321 of collimater 320 slope is different, is convex surface.
It is preferred that, the design of three sections of incidence surface 321 point is that the sub- incidence surface 321a of negative first, slope are sequentially including slope
Zero the second sub- incidence surface 321b and slope is the 3rd positive sub- incidence surface 321c, and exiting surface 322 is set to plane.
As shown in fig. 7, the angle between the first sub- incidence surface 321a and support frame 310 inner surface is ∠ 0, the 3rd sub- incidence surface
321c and the first sub- incidence surface 321a are symmetrical.
Specifically, through the first sub- incidence surface 321a, the maximum light of incidence angle and the formed folder of the minimum light of incidence angle
Angle is ∠ A；Angle formed by the incident ray at the second sub- incidence surface 321b two ends is ∠ B；It is incident through the 3rd sub- incidence surface 321c
Angle formed by the maximum light in the angle light minimum with incidence angle is ∠ C.
Illustratively, a certain bar incident ray is incident through the first sub- incidence surface 321a, the folder of the incident ray and vertical direction
Angle is ∠ 2 for the angle between ∠ 1, with the first sub- incidence surface 321a normals；After refraction, refracted light and the first sub- incidence surface
Angle between 321a normals is ∠ 3, and the angle between the normal of exiting surface 322 is ∠ 4；After exiting surface outgoing, emergent light
Angle between line and exiting surface normal is angle of emergence ∠ 5.
∠ 6 is that another incident ray is incident through the first sub- incidence surface 321a in Fig. 7, then after the outgoing of exiting surface 322,
Emergent ray and the angle of emergence formed by exiting surface normal.
Further, it is known that refractive index n and ∠ 1, it is assumed that known ∠ 0, then：
∠ 2=∠ 1+90 °-∠ 0
Further, according to the law of refraction：Sin ∠ 2=n*sin ∠ 3
Further, ∠ 3=arcsin (sin ∠ 2/n)=arcsin [sin (∠ 1+90 °-∠ 0)/n]
Further, -90 ° of+∠ 0 of ∠ 4=∠ 3- (90 ° of-∠ 0)=arcsin [sin (∠ 1+90 °-∠ 0)/n]
Further, according to the law of refraction：Sin ∠ 5=n*sin ∠ 4
Further,
∠ 5=arcsin (n*sin ∠ 4)=arcsin { n*sin { -90 ° of+∠ of arcsin [sin (∠ 1+90 °-∠ 0)/n]
0}}
Illustratively, for another incident ray, ∠ 1 changes, and can similarly release ∠ 6 and ∠ 0 relation：
∠ 6=arcsin { n*sin { -90 ° of+∠ 0 of arcsin [sin (∠ 1+90 °-∠ 0)/n] } }
Specifically, ∠ 1 is set-point in formula described above, as ∠ 1=(∠ A+ ∠ B+ ∠ C)/2, angle of incidence of light
Maximum, the incident light of the angle, after the collimating structure outgoing in the present embodiment, angle of emergence ∠ 5 is on negative slope direction
Maximum angular；As ∠ 1=∠ B/2, angle of incidence of light is minimum, the incident light of the angle, by the collimation in the present embodiment
After structure outgoing, angle of emergence ∠ 6 is the maximum angular on positive slope direction.
It is further preferred that the Collimation optics in the present embodiment, give the second sub- incidence surface two ends incident ray institute
Into angle ∠ B, the angle ∠ 0 between the sub- incidence surface of collimater first and support frame inner surface meets：It is above-mentioned to enter light through the first son
Face is incident, through exiting surface outgoing, the size of the maximum angle of emergence ∠ 5 on negative slope direction and the maximum outgoing on positive slope direction
Angle ∠'s 6 is equal in magnitude, is equal to ∠ B half.
Other components on this area liquid crystal panel and backlight module have been well known to those skilled in the art,
The state of the art is referred to, is not described in detail herein.
Compared with prior art, the liquid crystal display device that the present embodiment is provided, by setting light above LED
Learn collimating element, the collimater exiting surface of the collimating structure is plane, incidence surface order sets negative slope incidence surface, plane, just
Three sections of slope incidence surface, so that the exit aperture of light is increased, the conspicuous invariant of the drawing in optics, exit aperture increase,
The rising angle of light necessarily reduces, so that light realizes collimation outgoing to a certain extent, and then improves liquid crystal panel
When being shown picture because of color cross-talk problem different pixels unit caused by backlight rising angle is too big, improve color cross-talk
The schematic diagram of problem is as shown in Figure 8.
Further, shown in reference picture 9, Collimation optics 300 include support frame 310 and the standard being arranged between support frame
Straight device 320, collimater 320 includes incidence surface 321 and exiting surface 322, and incidence surface 321 and exiting surface 322 are circumferentially right respectively
Claim, in addition the structure and the first sub- incidence surface 321a of the luminescent device incidence surface 321 that the present embodiment is provided and table in support frame 310
The condition derivation that angle between face is met is described in detail in embodiment one, and here is omitted.
Further, the order of exiting surface 322 include the first positive slope exiting surface 322a, the first negative slope exiting surface 322b,
Plane 322c, the second positive slope exiting surface 322d and the second negative slope exiting surface 322e.
Specifically, the first positive slope exiting surface 322a and the first negative slope exiting surface 322b separation one are arranged on light
After the first sub- incidence surface 321a refractions, the exiting surface position corresponding to the refracted light for being zero with vertical direction angle；The
One negative slope exiting surface 322b and plane 322c separation two is arranged on light after the second sub- incidence surface 321b refractions, with
The exiting surface position corresponding to refracted light on the maximum negative slope direction of vertical direction angle；Plane 322c is just oblique with second
Rate exiting surface 322d separation three is arranged on light after the second sub- incidence surface 321b refractions, maximum with vertical direction angle
Positive slope direction on refracted light corresponding to exiting surface position；Second positive slope exiting surface 322d goes out with the second negative slope
Smooth surface 322e separation four is arranged on light after the 3rd sub- incidence surface 321c refractions, the folding for being zero with vertical direction angle
Penetrate the exiting surface position corresponding to light.Separation one and separation two are symmetrical with separation four and separation three respectively.
As shown in Figure 10, the first positive slope exiting surface 322a, the first negative slope exiting surface 322b, the second positive slope exiting surface
322d and the second negative slope exiting surface 322e principles designed are, it is ensured that the maximum refraction light in refraction angle after incidence surface is reflected
Line, when through exiting surface outgoing, emergent ray can be vertical with exiting surface, so as to ensure that light enters light from optically denser medium and dredges Jie
Refraction angle will not become big during matter.
Compared with prior art, a kind of luminescent device for being used to provide backlight that the present embodiment is provided, on the one hand according to light
The conspicuous invariant of drawing in, by setting collimating structure above LED, the collimater incidence surface of the collimating structure is set
Negative slope incidence surface, plane, the part of positive slope incidence surface three are put, so as to increase the exit aperture of light, light is reduced
Rising angle；Another aspect exiting surface by setting positive slope exiting surface and negative slope exiting surface in specific location, make by
The maximum refracted light in refraction angle after incidence surface refraction, when by exiting surface outgoing, emergent ray is vertical with exiting surface, so that
Ensure that light from optically denser medium enter optically thinner medium when refraction angle will not become big, and then realize the low-angle light extraction of backlight,
Realize the collimation outgoing of light to a certain extent.
In the application in one embodiment, in order to improve show uniformity, or increase mixed light characteristic D/H2 value, can
Processing is diffused with the light to luminescent device in advance, light diverging lens, such as concavees lens are put on luminescent device.And
Light collimation lens, collimation processing is carried out to diffusing light, wherein, the collimation angle φ 3 of light collimation lens is, it is necessary to meet public affairs
3≤arctan of formula φ (L/H1) requirements, L is the width of the black matrix, H1 for liquid crystal layer upper surface to quantum dot color images
The height of plain layer lower surface.
One embodiment provides another liquid crystal display device in the application, wherein, liquid crystal display device in the embodiment
Middle liquid crystal panel part is same as the previously described embodiments, repeats no more.In addition, another in this embodiment provide a kind of by luminescent device
The backlight module being diffused, as shown in figure 11, luminescent device can be angle of divergence very little, collimation and compare Gao Te in the present embodiment
Point, such as：Lasing fluorescence device, or the luminescent device of collimation lens is set above LED, the backlight module specifically includes photophore
Part 21, beam expanding lens, beam expanding lens are expanded and collimation processing to the luminescent device emergent ray.Luminescent device 21 is interval
That lays is multiple, for providing backlight luminescence device for backlight module.
Beam expanding lens includes input negative lens and output positive lens.Wherein, negative lens such as concavees lens, output positive lens are inputted such as
Convex lens.
Wherein, negative lens is inputted in beam expanding lens to carry out expanding processing to the light of luminescent device, improve point light source light-emitting
The spot diameter of the light beam of device, increases the light juxtaposition possibility of the luminescent device of multiple spot lights, to lift display
Uniformity.
Specifically, as shown in figure 12, can be provided with the present embodiment in the top of luminescent device 21 and expand plate 22, with
And, as shown in figure 13, collimating plate 23 is provided with expanding the top of plate 22.Wherein, expand corresponding with multiple luminescent devices on plate 22
It is provided with multiple input negative lenses 221, and collimating plate 23 and is correspondingly arranged on multiple output positive lens with multiple luminescent devices
231。
It is preferred that, if so that inputting the rear focus of negative lens 221, exporting the object focus of positive lens 231 and light
The center three of device 21 overlaps, and the emergent ray of luminescent device 21 is sequentially passed through the input negative lens 221 expanded on plate 22
With the output positive lens 231 on collimating plate 23, the diffusion to the emergent ray of luminescent device 21 and further collimation are realized.Root
Understand that the light sent positioned at lens focus, the light ray parallel outgoing after lens is reversible according to this principle and light path according to principle
Principle, if the rear focus of recessed plano lens is overlapped with the object focus of planoconvex spotlight, then, directional light by recessed plano lens send out
After dissipating, then the still exiting parallel after planoconvex spotlight, those skilled in the art can be according to the operation principle reason about lens
Solution, is repeated no more in the present embodiment.
Certain preferred embodiments are provided to realize in the optimum efficiency of the present invention, the present embodiment.
Further, it is defeated the characteristics of the emergent ray less parallel of the operation principle of foundation lens and luminescent device 21
Enter negative lens 221 and be designed as concavees lens, both having inputted negative lens 221 includes the first sub- incidence surface that incidence surface side is concave surface, goes out
Smooth surface side is the first exiting surface of plane；Output positive lens 231 is designed as convex lens, and both having exported positive lens 231 is included into light
Face side is the second sub- incidence surface of plane, and exiting surface side is second exiting surface on convex surface.
The emergent ray of luminescent device 21 sequentially pass through for concave surface the first sub- incidence surface and be plane the first exiting surface,
The diverging of luminescent device 21 is realized, in the case of the negligible amounts of luminescent device 21, the outgoing of luminescent device 21 is effectively increased
The scope of light, then the light of luminescent device 21 after diverging sequentially pass through for plane the second sub- incidence surface and be convex surface
Second exiting surface, realizes the collimation to luminescent device 21.
Further, be it is efficient utilize luminescent device 21, the size of luminescent device 21, input negative lens 221 size and
The size of output positive lens 231 increases successively, the emergent ray of luminescent device 21 is all born by expanding the input on plate 22
The structure of lens 221, both when setting expands the concave surface on the sub- incidence surface of plate 22 first, should ensure that the beam projecting model of luminescent device 21
Enclose the size less than the first sub- incidence surface upper recess surface.
And because the light of luminescent device 21 is through inputting after negative lens 221 dissipated, the light of luminescent device 21 by
Parallel rays originally is changed into the scattering light of self-scattering lens outgoing, therefore the outgoing scope of scattering light compares initial light
Line is significantly increased, equally, to increase the utilization rate of the scattering light, it is ensured that the scattering light all enters to inject on collimating plate 23
Export the size that the concave surface on positive lens 231, the first sub- incidence surface is less than convex surface on the second exiting surface.
Further, the concave surface on the sub- incidence surface of luminescent device 21 and first is realized and the convex surface on the second exiting surface
On the basis of one-to-one corresponding, the cloth of luminescent device 21 is used to ensure that the luminescent device that provides of backlight module is uniform and reducing as far as possible
If quantity, the luminescent device 21 in the present embodiment is the multiple of uniform intervals laying, accordingly, input negative lens 221 and output
Positive lens 231 be uniform intervals lay it is multiple, particular number should be according to the size of liquid crystal panel, and expands on plate 22 the
The setting size on convex surface is set on second exiting surface in the setting size of one sub- incidence surface upper recess surface, collimating plate 23, is finally reached
To with as far as possible few lasing fluorescence device, the purpose that whole display picture provides backlight luminescence device is embodied as.
Alternatively, it is also to reduce light damage of the light of luminescent device 21 after expanding plate 22 and collimating plate 23
Lose, it is preferred that expanding the material of plate 22 and collimating plate 23 includes higher acrylic (PMMA) material of optical transmittance, poly- carbonic acid
Ester (PC) material.
Compared with prior art, the advantageous effects for the technical scheme that the embodiment of the present application is proposed include：
The present embodiment provides a kind of display device, including liquid crystal panel and backlight module, wherein, backlight module includes luminous
Device, be disposed on successively above luminescent device and expand plate and collimating plate, expand plate, by correspondence luminescent device set it is defeated
Enter negative lens composition, for being diffused to luminescent device；Collimating plate, the output positive lens structure set by correspondence luminescent device
Into for being collimated to luminescent device；Input the rear focus of negative lens, export the object focus and photophore of positive lens
The center three of part overlaps.In the backlight module that the present embodiment is provided, by being sequentially arranged above in luminescent device with diffusion
What is acted on expands plate and collimating plate, is made up of specifically, expanding plate the input negative lens that effect is dissipated with light, collimating plate is by having
The output positive lens for having light collimating effect is constituted.Due to inputting the light diffusion of negative lens and the light of output positive lens
In the case of collimating effect, luminescent device negligible amounts, light is spread by inputting negative lens to increase laser beam first
Outgoing scope, then by input negative lens to light spread after scattering light collimate, it is ensured that light ray parallel goes out
Penetrate, and then solve the problems, such as the color cross-talk that liquid crystal panel occurs.
In summary, a kind of liquid crystal display device that the present patent application is provided, including liquid crystal panel, liquid crystal panel include according to
The secondary quantum dot colour element layer being stacked, upper polarizer, liquid crystal switch cell and lower polarizer.Wherein, quantum dot is colored
Pixel layer includes red sub-pixel unit, green sub-pixels unit and blue subpixels unit.The display device also includes setting
Backlight module below the liquid crystal panel, backlight module includes backboard and the luminescent device being disposed there above, and this lights
Device includes LED and the Collimation optics being disposed there above.According to conspicuous invariant is drawn, by luminous in LED
Collimation optics are set above device, make beam projecting aperture increases, so that the rising angle of backlight reduces, light is realized
A certain degree of collimation outgoing, and then liquid crystal panel is improved when being shown to picture because of the larger picture brought of backlight rising angle
Color cross-talk problem between element.
It is different and one embodiment provides the variation of another liquid crystal display device in the application
Finally it should be noted that：Various embodiments above is only illustrating the technical scheme that collects of the present invention, rather than it is entered
Row limitation；Although the present invention is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from the present invention
The scope of each embodiment technical scheme.
Claims (10)
1. a kind of liquid crystal display device, including liquid crystal panel and backlight module, wherein, the liquid crystal panel includes：Liquid crystal layer,
Liquid crystal layer the upper side and lower side correspondence configuration upper polarizer and lower polarizer, and quantum dot colour element layer, its feature exist
In,
The quantum dot colour element layer configuration is above the upper polarizer, and quantum dot colour element layer is including some
Individual spaced multiple color sub-pixel unit and the black matrix" between the sub-pixel unit；
The backlight module includes luminescent device, Collimation optics and other backlight assemblies, wherein, the luminescent device is used
The light needed for the liquid crystal panel display image is provided, the Collimation optics are carried out to the luminescent device emergent ray
Collimation processing.
2. liquid crystal display device as claimed in claim 1, it is characterised in that the Collimation optics include support frame with setting
The collimater on support frame as described above is put, the incidence surface of the collimater is convex surface.
3. liquid crystal display device as claimed in claim 2, it is characterised in that the incidence surface includes many sub- incidence surfaces.
4. liquid crystal display device as claimed in claim 3, it is characterised in that the multiple sub- incidence surface includes slope to bear
First sub- incidence surface, the sub- incidence surface of second that slope is zero and slope are the 3rd positive sub- incidence surface.
5. the liquid crystal display device as described in claim 4 is any, it is characterised in that the exiting surface of the collimater includes multiple
Sub- exiting surface.
6. liquid crystal display device as claimed in claim 5, it is characterised in that it is just oblique that the multiple exiting surface order includes first
Rate exiting surface, the first negative slope exiting surface, plane, the second positive slope exiting surface and the second negative slope exiting surface.
7. liquid crystal display device as claimed in claim 6, it is characterised in that the first sub- incidence surface described in the sub- incidence surface with
Support frame as described above inner surface angle is met：Light is after the first sub- incidence surface incidence, through exiting surface outgoing, positive slope direction
Upper emergent ray and exiting surface normal institute into maximum angular size, with emergent ray on negative slope direction and exiting surface normal into
The size of maximum angular is identical, is equal to the half of the incident ray angle size through the described second sub- incidence surface two ends.
8. liquid crystal display device as claimed in claim 7, it is characterised in that the first positive slope exiting surface and described first
The separation one of negative slope exiting surface is arranged on light after the described first sub- incidence surface refraction, is zero with vertical direction angle
Refracted light corresponding to exiting surface position；The first negative slope exiting surface and the separation two of the plane are arranged on light
Line is after the described second sub- incidence surface refraction, corresponding to the refracted light with vertical direction angle on maximum negative slope direction
Exiting surface position；The plane and the separation three of the second positive slope exiting surface, and the second positive slope light extraction
Face and the separation four of the second negative slope exiting surface, are symmetrically set with the separation two and the separation one respectively.
9. liquid crystal display device as claimed in claim 1, it is characterised in that luminescent device is lasing fluorescence chip.
10. liquid crystal display device as claimed in claim 9, it is characterised in that be provided with standard above the lasing fluorescence chip
Straight lens.
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| PCT/CN2017/116670 WO2019029086A1 (en) | 2017-08-09 | 2017-12-15 | Liquid crystal display device |
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| CN109375421A (en) * | 2018-12-19 | 2019-02-22 | 惠州市华星光电技术有限公司 | Liquid crystal display |
| CN114721191B (en) * | 2021-01-06 | 2024-05-14 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof, display module and display device |
| CN114721191A (en) * | 2021-01-06 | 2022-07-08 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof, display module and display device |
| CN113809064A (en) * | 2021-09-22 | 2021-12-17 | 京东方科技集团股份有限公司 | Display panel, display device and light field display device |
| CN113809064B (en) * | 2021-09-22 | 2024-07-02 | 京东方科技集团股份有限公司 | Display panel, display device and light field display device |
| CN116699854B (en) * | 2023-07-27 | 2023-10-03 | 北京极溯光学科技有限公司 | Perspective optical system and equipment capable of realizing display shielding |
| CN116699854A (en) * | 2023-07-27 | 2023-09-05 | 北京极溯光学科技有限公司 | Perspective optical system and equipment capable of realizing display shielding |
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