CN109426034A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
- Publication number
- CN109426034A CN109426034A CN201710766455.8A CN201710766455A CN109426034A CN 109426034 A CN109426034 A CN 109426034A CN 201710766455 A CN201710766455 A CN 201710766455A CN 109426034 A CN109426034 A CN 109426034A
- Authority
- CN
- China
- Prior art keywords
- layer
- light
- liquid crystal
- electrically
- backing plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
-
- 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
Landscapes
- 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
The present invention relates to a kind of liquid crystal display devices, comprising: backlight module and the liquid crystal module in the backlight module optical path, the liquid crystal module includes the first electrically-conductive backing plate towards the backlight module, with second electrically-conductive backing plate at the first electrically-conductive backing plate interval and the liquid crystal layer being arranged between first electrically-conductive backing plate and the second electrically-conductive backing plate, it is characterized in that, second electrically-conductive backing plate includes the transparency conducting layer being sequentially located on the light direction of the backlight module, light conversion layer and chromatic filter layer, and the liquid crystal layer is between first electrically-conductive backing plate and the transparency conducting layer, the light that the light conversion layer is used to be emitted the backlight module carries out color conversion, the chromatic filter layer is for being filtered the light being emitted from the light conversion layer, keep the light being emitted from the chromatic filter layer single Coloured light.
Description
Technical field
The present invention relates to a kind of liquid crystal display devices.
Background technique
LED display technique has high brightness, environmental protection and energy saving, fast response time, impact resistance and steady performance, LED
The purpose of display screen is as display, display board, bulletin board is widely used needing the occasion of large scale, high brightness.Tradition
LED display generally uses the light of semiconductor material realization different colours, if gallium arsenide phosphide diode glows, two pole of gallium phosphide
Pipe green light, indium gallium nitrogen diode blue light-emitting, three-color LED carry out light mixing, realize colored display.But this kind of mode obtain it is white
Light color rendering is insufficient, is not able to satisfy and specifically goes out light requirement.
Summary of the invention
In view of this, it is necessary to provide a kind of liquid crystal display devices for being able to solve above-mentioned technical problem.
A kind of liquid crystal display device comprising: backlight module and the liquid crystal module in the backlight module optical path, institute
Stating liquid crystal module includes towards the first electrically-conductive backing plate of the backlight module and second conductive base at the first electrically-conductive backing plate interval
Plate and the liquid crystal layer being arranged between first electrically-conductive backing plate and the second electrically-conductive backing plate, which is characterized in that described second is conductive
Substrate includes the transparency conducting layer, light conversion layer and chromatic filter layer being sequentially located on the light direction of the backlight module,
And the liquid crystal layer is between first electrically-conductive backing plate and the transparency conducting layer, the light conversion layer is used for described
Backlight module outgoing light carry out color conversion, the chromatic filter layer be used for from the light that the light conversion layer is emitted into
Row filtering, makes the light monochromatic light being emitted from the chromatic filter layer.
Further, second electrically-conductive backing plate further includes transparent substrate, and the transparent substrate is the liquid crystal module
Outermost layer, the light conversion layer and the chromatic filter layer are between the transparent substrate and the transparency conducting layer.
Further, the light conversion layer is formed on the transparency conducting layer, and the light conversion layer includes multiple by one
The fluorescence color lump of set pattern then repeated arrangement；The chromatic filter layer is formed on the light conversion layer, the chromatic filter layer
Including multiple optical filtering color lumps by certain regular repeated arrangement, the optical filtering color lump and fluorescence color lump position and color are uniform
One is corresponding.
Further, first electrically-conductive backing plate further includes black-matrix layer, and the black-matrix layer is by the fluorescence coating
And chromatic filter layer is separated into multiple parts being spaced each other, the height of the black-matrix layer be the light conversion layer with it is described
The sum of height of chromatic filter layer.
Further, the light conversion layer includes transparent polymer and the quantum dot that is formed in transparent polymer.
Further, the material of the light conversion layer is red fluorescence powder, blue colour fluorescent powder or green emitting phosphor.
Further, the backlight module is down straight aphototropism mode set or side entrance back module.
Further, the backlight module is down straight aphototropism mode set comprising circuit board, setting are spaced on circuit boards
The light emitting diode of arrangement, setting on circuit boards and be located at secondary optical lens that light emitting diode goes out in light optical path and
Optical diaphragm in front of secondary optical lens is set.
Further, first electrically-conductive backing plate further includes black-matrix layer, and the black-matrix layer only separates the light
Conversion layer is multiple parts being spaced each other, and the chromatic filter layer is covered on the black-matrix layer and the light conversion layer is total
With the surface formed.
Further, the chromatic filter layer includes base layer, and the optical filtering color lump is formed in the base layer, described
Black-matrix layer is formed on the base layer, and the optical filtering color lump and the fluorescence color lump correspond.
The invention further relates to another liquid crystal display devices.
A kind of liquid crystal display device comprising: backlight module and the liquid crystal module in the backlight module optical path；
The backlight module includes reflecting plate and light-emitting diode chip for backlight unit；
The liquid crystal module include towards the reflecting plate the first electrically-conductive backing plate, the with the first electrically-conductive backing plate interval
Two electrically-conductive backing plates and the liquid crystal layer being arranged between first electrically-conductive backing plate and the second electrically-conductive backing plate；The light-emitting diodes tube core
First electrically-conductive backing plate is arranged in towards on the surface of the reflecting plate in piece；Second electrically-conductive backing plate includes being sequentially located at institute
Transparency conducting layer, light conversion layer and the chromatic filter layer on the light direction of backlight module are stated, and the liquid crystal layer is to be located at
Between first electrically-conductive backing plate and the transparency conducting layer；The light conversion layer is used for the light being emitted to the backlight module
Color conversion is carried out, the chromatic filter layer makes for being filtered to the light being emitted from the light conversion layer from the light
The light of each color of conversion layer outgoing remains own monochromaticjty.
Compared with prior art, the present invention provides liquid crystal display device provided by the invention, passes through going out in light conversion layer
Chromatic filter layer is set in light optical path, carried out chromatic filter layer to the light of the different wave length by light conversion layer outgoing
Filter makes the emergent ray of each color keep own monochromaticjty, the liquid-crystal apparatus is enable to generate high contrast, Gao Yanse
The visual effect of property.
Detailed description of the invention
Fig. 1 is a kind of structure chart for liquid crystal display device that first embodiment of the invention provides.
Fig. 2~4 are the relational graphs between spectral intensity and wavelength.
Fig. 5 is a kind of structure chart for liquid crystal display device that second embodiment of the invention provides.
Fig. 6 is the top view for the chromatic filter layer that the liquid crystal display device that Fig. 5 is provided includes.
Fig. 7 is a kind of structure chart for liquid crystal display device that third embodiment of the invention provides.
Main element symbol description
Specific embodiment will further illustrate the present invention in conjunction with above-mentioned attached drawing.
Specific embodiment
Below with reference to accompanying drawings and embodiments will be combined, liquid crystal display device provided by the invention is made further specifically
It is bright.
First embodiment
Referring to Fig. 1, be a kind of liquid crystal display device 100 provided by the invention comprising backlight module 10 and be located at institute
State the liquid crystal module 20 in 10 optical path of backlight module.In the present embodiment, the backlight module 10 is down straight aphototropism mode set.
The backlight module 10 includes circuit board 11, and spaced light emitting diode 12 is arranged on circuit board 11, sets
It sets the secondary optical lens 13 on circuit board 11 and on light emitting diode 12 out light optical path, go out positioned at light emitting diode 12
In light optical path and the diffuser plate 14 in the front of secondary optical lens 13 is set and the optical diaphragm in 14 front of diffuser plate is set
15.The backlight module 10 is used to provide the described the backlight of liquid crystal display device 100.
The light emitting diode 12 can be UV light source or trichromatic LED light source, be also possible to UV light source and three originals
The combination of color LED light source.
The secondary optical lens 13 are arranged on the circuit board 11 and are located at outside each light emitting diode 12
Side, the light that the secondary optical lens 13 are used to issue light emitting diode 12 carry out even photochemical.Namely the secondary optics
Lens 13 are to make the light intensity decreasing right above light emitting diode 12, and the light intensity of 12 peripheral region of light emitting diode increases, from
And the light intensity among light emitting diode 12 with peripheral region is balanced, so that the emitting brightness of backlight module 10 is more uniform.
In the present embodiment, the inner surface of the secondary optical lens 13 is ellipsoid, and secondary optical lens
13 central axis and the long axis of ellipsoid coincide；The outer surface of the secondary optical lens 13 is semi circular surface, from light-emitting diodes
The light that pipe 12 issues, the light in 12 centre of light emitting diode are vertical incidence to the vertex of the secondary optical lens,
And be emitted from the position on vertex, light emitting diode 12 is all refracted to the secondary optical lens 13 in addition to the light in centre
Side achievees the effect that even light in this way, preventing the brightness right above light emitting diode too strong with this.
The diffuser plate 14 is for randomly changing the path of incident light, to the light being emitted in the secondary optical lens 13
Line is further homogenized, and the brightness uniformity of incident light is improved.
The optical diaphragm 15 can be light guide plate or brightness enhancement film (Light Enhancemnt Film).
It is appreciated that in other implementations, the backlight module 10 or side entrance back module.
The liquid crystal module 20 includes towards the first electrically-conductive backing plate 21 of the backlight module 10 and the first electrically-conductive backing plate 21
Second electrically-conductive backing plate 22 at interval and the liquid crystal layer being arranged between first electrically-conductive backing plate 21 and the second electrically-conductive backing plate 22
23。
First electrically-conductive backing plate 21 is arranged towards the backlight module 10, and first electrically-conductive backing plate 21 is film crystal
Array substrate (Thin Film Transistor, TFT), the thin film transistor (TFT) (not shown) are arranged in first conductive base
The surface towards the liquid crystal layer 23 of plate 21.
Second electrically-conductive backing plate 22 include positioned at the backlight module 10 light direction on transparency conducting layer 220,
Light conversion layer (light conversion layer) 222,224, black-matrix layer chromatic filter layer (color filter)
226 and transparent substrate 228.Specifically, black-matrix layer 226 is formed in the surface of the transparent substrate 228, the black
Matrix layer 226 includes multiple gaps 223, and the light conversion layer 222 and the chromatic filter layer 224 are stacked, and are respectively provided with
In the gap 223.
The material of the transparency conducting layer 220 is tin indium oxide (ITO).The liquid crystal layer 23 is folded in the electrically conducting transparent
Between layer 220 and first electrically-conductive backing plate 21.When applying electricity with first electrically-conductive backing plate 21 to the transparency conducting layer 220
When potential difference, electric field is generated between the two.The liquid crystal response of liquid crystal layer 23 changes theirs in the electric field for being applied to them
Arrangement, to change the local transmitance of liquid crystal layer 23.
The light conversion layer 222 is a kind of light converting member for converting incident light property.Specifically, the light conversion layer
222 be a kind of Wavelength changing element for converting lambda1-wavelength.
The light conversion layer 222 includes transparent polymer and the fluorescent powder being formed in transparent polymer.For example, the light
Conversion layer 222 may include the green fluorescence that red fluorescence color lump 2220, the green emitting phosphor formed by red fluorescence powder is formed
The blue-fluorescence color lump 2220 that color lump 2220 and blue colour fluorescent powder are formed.
Red fluorescence powder can for potassium fluosilicate (KSF, (K2 (SiF6): Mn4+), SLA (Sr (LiAl3N4): Eu2+) or
Person SiAlON (SiAlON:Eu2+).
Green emitting phosphor can be nitride (Oxy-Nitrides, Carbido-Nitrides) or CaAlSiN3:
Eu2+ or silicide (Silicates, Oxy/Ortho-Silicates).
Blue colour fluorescent powder can have chemical formula are as follows: ZnS:Ag (zinc sulphide: silver), ZnS:Zn (zinc sulphide: zinc), ZnS:Ag
(zinc sulphide: silver), (Ba, Eu) Mg2Al16O27, BaMgAl10O17:Eu, Mn, Ca5F (PO4) 3:Sb, (Ca, Sr, Ba) 3
(PO4)2Cl2:Eu、 (Sr,Ca,Ba)10(PO4)6Cl2:Eu。
The light conversion layer 222 can also be transparent polymer and the quantum dot being formed in transparent polymer
(quantum dots).Quantum dot may include that II compound semiconductor, III group compound semiconductor, V compounds of group are partly led
At least one of body and VI compound semiconductor.More specifically, nanocrystal core may include CdSe, InGaP, CdTe,
CdS, ZnSe, ZnTe, ZnS, HgTe or HgS.In addition, nanocrystalline body shell may include CuZnS, CdSe, CdTe, CdS, ZnSe,
ZnTe, ZnS, HgTe or HgS.Quantum dot can have the diameter of about 1nm to about 10nm.
The light conversion layer 222 is used to be converted to the light that the light emitting diode 12 issues the light of particular color.For example,
If light emitting diode 12 is blue light-emitting diode, the blue that light conversion layer 222 will export upwards from backlight module 10
Light is converted into green light or red light.
Specifically, a part of blue light is converted into having within the scope of about 520nm to about 560nm by light conversion layer 222
Wavelength green light, and a part of blue light is converted into the wavelength within the scope of the 630nm to about 660nm
Red light.
In the present embodiment, the light emitting diode 12 is ultraviolet light (UV) light emitting diode, and light conversion layer 222 will be from
The UV light that backlight module 10 exports upwards is converted into blue light, green light and red light.Specifically, light conversion layer 222 is by one
UV light is divided to be converted into the blue light with the wavelength within the scope of about 430nm to about 470nm, a part of UV light is converted into having
There is the green light of the wavelength within the scope of about 520nm to about 560nm, and a part of UV light is converted into having in about
The red light of wavelength within the scope of 630nm to about 660nm.
The chromatic filter layer 224 includes multiple three primary colors optical filtering color lumps 2240 by certain regular repeated arrangement.Three is former
Color includes red (red), green (green) and blue (blue).Blue filter color lump allows only blue light transmission, and stops green
Light and feux rouges；Red filter color lump allows only feux rouges transmission, and block green light and blue light；Only green light is saturating for the permission of green filter color lump
It crosses, and block blue light and feux rouges.Each optical filtering color lump 2240 is consistent with the color of corresponding fluorescence color lump 2220, and
Position is corresponding.The chromatic filter layer 224 is used to be filtered to by the light of the light conversion layer 222, makes to filter from colour
The monochromatic color that photosphere 224 is emitted is purer, to keep own monochromaticjty.
The black-matrix layer 226 can reduce different colours light between each pixel unit and interfere, and that is to say prevents phase
Colour mixture between adjacent pixel unit, to realize that the liquid-crystal apparatus can generate high contrast, the visual effect of high color rendering.By institute
State light conversion layer 222 and the chromatic filter layer 224 be formed in the black-matrix layer 226 gap namely the black square
The thickness of battle array layer 226 is equal with the sum of the thickness of both the light conversion layer 222 and the chromatic filter layer 224.
The material of the transparent substrate 228 can be the membrane material of glass, transparent inorganic substrate or plastic cement material, for example
Polyethylene terephthalate (PET) membrane material.The light being emitted from chromatic filter layer 224 goes out after the transparent substrate
It penetrates.
Fig. 2~4 are referred to, are passed through after backlight module 10, liquid crystal module 20 for the light that light emitting diode 12 issues
Relational graph between wavelength X and intensity I.Namely when light pass through chromatic filter layer 224 after, wavelength X 525 to 650nm it
Between；Between 550nm between 640nm, overlapping wavelengths region is less than 100nm for the overlapping region of green light and blue light, is able to satisfy liquid crystal
The high color rendering demand of display device 100.
Referring to Fig. 5, wavelength, between 525nm to 650nm, the peak value for the spectrum intensity that green emitting phosphor is issued is in G:
529nm；The spectrum intensity that red fluorescence powder is issued is in R:649 nm, the wavelength of the crosspoint corresponding position in overlapping wavelengths region
Are as follows: 586nm, 586-529=57 nm；649-588=61nm), the spectrum intensity distribution that red fluorescence powder is issued is glimmering with green
The overlapping wavelengths region for the spectrum intensity distribution that light powder is issued is between 50~100nm；The crosspoint in overlapping wavelengths region is corresponding
The wavelength of position is 586nm, the corresponding intensity I=0.00038 in the position 586nm；Maximum light intensity is blue light in the position pair 444nm
The luminous intensity answered, and Imax=0.01619, the then ratio of the luminous intensity Yu maximum light intensity in the crosspoint of overlapping region are as follows: I/
Imax=2.35%, the ratio between 0%~5%, so, liquid crystal display device provided by the invention is able to satisfy color
High contrast demand.
Second embodiment
Please refer to figs. 2 and 3, the liquid crystal display that the liquid crystal display device and first embodiment that second embodiment provides provide
Device 100 is essentially identical, the difference is that: the second electrically-conductive backing plate 22a also includes transparency conducting layer 220, light conversion layer
222a, chromatic filter layer 224a, black-matrix layer 226a and transparent substrate 228.But light conversion layer 222a is formed in
In black-matrix layer 226, specifically multiple gap 223a are formed in black-matrix layer 226, the light conversion layer 222a
It is formed in the gap 223a namely black-matrix layer 226 is concordant with the light conversion layer 222a, consistency of thickness.
The chromatic filter layer 224a includes base layer 2242 and the colorized optical filtering color being formed in the base layer 2242
Block 2240a, the color of the base layer 2242 can be it is transparent, the material of base layer 2242 can be resin or plastics,
Colorized optical filtering color lump 2240a can be formed in base layer 2242 by the way of spraying, coining.The colorized optical filtering color lump
2240a is still to be aligned with the fluorescence color lump 2220a and color is one-to-one.The chromatic filter layer 224a covering
The surface that the black-matrix layer 226a and the light conversion layer 222a are collectively formed.
3rd embodiment
Referring to Fig. 7, the liquid crystal display that liquid crystal display device 300 and first embodiment that 3rd embodiment provides provide fills
Set it is 100 essentially identical, the difference is that: that the liquid crystal display device that 3rd embodiment provides includes is backlight module 10a,
The backlight module 10a includes a reflecting plate 116 and multiple light-emitting diode chip for backlight unit 120.
The light-emitting diode chip for backlight unit 120 can be flip-chip (flip chip), miniature LED chip (micro LED
Chip) either RBG LED chip.
First electrically-conductive backing plate 210 includes first surface 211 and the second surface opposite with the first surface 211
213.The setting of light-emitting diode chip for backlight unit 120 is electrically connected in the first surface 211 and with the electrically-conductive backing plate.From hair
The light that optical diode issues is incident to the reflecting plate 116 first, after the reflecting plate 116 reflection, reenters described in being incident upon
First electrically-conductive backing plate 210.
The present embodiment allows backlight module due to being that light-emitting diode chip for backlight unit 120 is arranged on first electrically-conductive backing plate
The structure of 10a is more succinct, so that the structure of the liquid crystal display device 300 formed is more thinned, is able to satisfy liquid crystal display device 300
Lightening demand.
In conclusion liquid crystal display device 100,300 provided by the invention, by going out light optical path in light conversion layer 222
Upper setting chromatic filter layer 224 carries out the light of 224 pairs of the chromatic filter layer different wave lengths being emitted by light conversion layer 222
Filtering makes the emergent ray of each color keep own monochromaticjty, then carries out three-color LED and carry out light mixing, realizes colored aobvious
Show, in this way, obtained liquid-crystal apparatus 100 can generate high contrast, the visual effect of high color rendering.
It is understood that above embodiments are only used to illustrate the present invention, it is not used as limitation of the invention.For this
For the those of ordinary skill in field, the various other changes and modifications made in accordance with the technical idea of the present invention, all
It falls within the scope of protection of the claims of the present invention.
Claims (10)
1. a kind of liquid crystal display device comprising: backlight module and the liquid crystal module in the backlight module optical path, it is described
Liquid crystal module includes towards the first electrically-conductive backing plate of the backlight module and second electrically-conductive backing plate at the first electrically-conductive backing plate interval
And the liquid crystal layer between first electrically-conductive backing plate and the second electrically-conductive backing plate is set, which is characterized in that second conductive base
Plate includes the transparency conducting layer, light conversion layer and chromatic filter layer being sequentially located on the light direction of the backlight module, and
The liquid crystal layer is between first electrically-conductive backing plate and the transparency conducting layer, and the light conversion layer is used for the back
The light of optical mode group outgoing carries out color conversion, and the chromatic filter layer is used to carry out the light being emitted from the light conversion layer
Filtering makes the light for each color being emitted from the light conversion layer remain own monochromaticjty.
2. liquid crystal display device as described in claim 1, which is characterized in that second electrically-conductive backing plate further includes transparent base
Plate, the transparent substrate are the outermost layer of the liquid crystal module, and the light conversion layer and the chromatic filter layer are located at described
Between transparent substrate and the transparency conducting layer.
3. liquid crystal display device as claimed in claim 2, which is characterized in that the light conversion layer is formed in the electrically conducting transparent
On layer, the light conversion layer includes multiple fluorescence color lumps by certain regular repeated arrangement；The chromatic filter layer is formed in
On the light conversion layer, the chromatic filter layer includes multiple optical filtering color lumps by certain regular repeated arrangement, the optical filtering color
Block is corresponded with fluorescence color lump position and color.
4. liquid crystal display device as claimed in claim 3, which is characterized in that first electrically-conductive backing plate further includes black matrix"
The fluorescence coating and chromatic filter layer are separated into multiple parts being spaced each other, the black square by layer, the black-matrix layer
The height of battle array layer is the sum of the height of the light conversion layer and the chromatic filter layer.
5. liquid crystal display device as claimed in claim 3, which is characterized in that the light conversion layer is transparent polymer and shape
At the quantum dot in transparent polymer；Or it is formed in the fluorescent powder in transparent polymer.
6. liquid crystal display device as described in claim 1, which is characterized in that the backlight module be down straight aphototropism mode set or
Person's side entrance back module.
7. liquid crystal display device as claimed in claim 6, which is characterized in that the backlight module is down straight aphototropism mode set,
It includes circuit board, spaced light emitting diode, setting on circuit boards is arranged on circuit boards and is located at light-emitting diodes
The optical diaphragm managing out the secondary optical lens in light optical path and being arranged in front of secondary optical lens.
8. liquid crystal display device as claimed in claim 3, which is characterized in that first electrically-conductive backing plate further includes black matrix"
Layer, it is multiple parts being spaced each other that the black-matrix layer, which only separates the light conversion layer, and the chromatic filter layer is covered on
The surface that the black-matrix layer and the light conversion layer are collectively formed.
9. liquid crystal display device as claimed in claim 8, which is characterized in that the chromatic filter layer includes base layer, described
Optical filtering color lump is formed in the base layer, and the black-matrix layer is formed on the base layer, the optical filtering color lump with
The fluorescence color lump alignment and color one-to-one correspondence.
10. a kind of liquid crystal display device comprising: backlight module and the liquid crystal module in the backlight module optical path；
The backlight module includes reflecting plate and light-emitting diode chip for backlight unit；
The liquid crystal module includes to lead towards the first electrically-conductive backing plate of the reflecting plate, with the second of the first electrically-conductive backing plate interval
Electric substrate and the liquid crystal layer being arranged between first electrically-conductive backing plate and the second electrically-conductive backing plate；The light-emitting diode chip for backlight unit is set
It sets in first electrically-conductive backing plate towards on the surface of the reflecting plate；Second electrically-conductive backing plate includes being sequentially located at the back
Transparency conducting layer, light conversion layer and chromatic filter layer on the light direction of optical mode group, and the liquid crystal layer is positioned at described
Between first electrically-conductive backing plate and the transparency conducting layer；The light that the light conversion layer is used to be emitted the backlight module carries out
Color conversion, the chromatic filter layer make to convert from the light for being filtered the light being emitted from the light conversion layer
The light of each color of layer outgoing remains own monochromaticjty.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710766455.8A CN109426034A (en) | 2017-08-30 | 2017-08-30 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710766455.8A CN109426034A (en) | 2017-08-30 | 2017-08-30 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109426034A true CN109426034A (en) | 2019-03-05 |
Family
ID=65504301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710766455.8A Pending CN109426034A (en) | 2017-08-30 | 2017-08-30 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109426034A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017551A (en) * | 2019-05-30 | 2020-12-01 | 群创光电股份有限公司 | Optical device |
| CN112213879A (en) * | 2019-07-10 | 2021-01-12 | 成都辰显光电有限公司 | Color conversion assembly, display panel and display device |
| CN113130458A (en) * | 2019-12-31 | 2021-07-16 | Tcl集团股份有限公司 | Light-emitting unit, backlight structure, display panel and manufacturing method of light-emitting source |
| WO2021233102A1 (en) * | 2020-05-22 | 2021-11-25 | 北京芯海视界三维科技有限公司 | Light emitting module, display module, display screen, and display |
| WO2022089024A1 (en) * | 2020-10-29 | 2022-05-05 | 深圳光峰科技股份有限公司 | Projection display system |
| US11726359B2 (en) | 2019-08-29 | 2023-08-15 | Vivo Mobile Communication Co., Ltd. | Display module and electronic device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201005367A (en) * | 2008-07-17 | 2010-02-01 | Chunghwa Picture Tubes Ltd | Color conversion liquid crystal display |
| JP2010026422A (en) * | 2008-07-24 | 2010-02-04 | Toppan Printing Co Ltd | Color filter and liquid crystal display device equipped with the same |
| CN101871598A (en) * | 2009-04-27 | 2010-10-27 | 先进开发光电股份有限公司 | Backlight module having light complementary color area |
| CN103885242A (en) * | 2012-12-19 | 2014-06-25 | 瑞仪光电股份有限公司 | Liquid crystal display device with a light guide plate |
| WO2015133999A1 (en) * | 2014-03-04 | 2015-09-11 | Empire Technology Development Llc | Backlight units and methods of making the same |
| CN105044974A (en) * | 2015-08-28 | 2015-11-11 | 京东方科技集团股份有限公司 | Colored filter layer, display substrate and display device |
| CN105353554A (en) * | 2015-12-04 | 2016-02-24 | 深圳市华星光电技术有限公司 | Colored film substrate manufacturing method and liquid crystal display device |
-
2017
- 2017-08-30 CN CN201710766455.8A patent/CN109426034A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201005367A (en) * | 2008-07-17 | 2010-02-01 | Chunghwa Picture Tubes Ltd | Color conversion liquid crystal display |
| JP2010026422A (en) * | 2008-07-24 | 2010-02-04 | Toppan Printing Co Ltd | Color filter and liquid crystal display device equipped with the same |
| CN101871598A (en) * | 2009-04-27 | 2010-10-27 | 先进开发光电股份有限公司 | Backlight module having light complementary color area |
| CN103885242A (en) * | 2012-12-19 | 2014-06-25 | 瑞仪光电股份有限公司 | Liquid crystal display device with a light guide plate |
| WO2015133999A1 (en) * | 2014-03-04 | 2015-09-11 | Empire Technology Development Llc | Backlight units and methods of making the same |
| CN105044974A (en) * | 2015-08-28 | 2015-11-11 | 京东方科技集团股份有限公司 | Colored filter layer, display substrate and display device |
| CN105353554A (en) * | 2015-12-04 | 2016-02-24 | 深圳市华星光电技术有限公司 | Colored film substrate manufacturing method and liquid crystal display device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017551A (en) * | 2019-05-30 | 2020-12-01 | 群创光电股份有限公司 | Optical device |
| CN112017551B (en) * | 2019-05-30 | 2022-06-03 | 群创光电股份有限公司 | Optical device |
| CN112213879A (en) * | 2019-07-10 | 2021-01-12 | 成都辰显光电有限公司 | Color conversion assembly, display panel and display device |
| WO2021004086A1 (en) * | 2019-07-10 | 2021-01-14 | 成都辰显光电有限公司 | Color conversion assembly, display panel, and display apparatus |
| CN112213879B (en) * | 2019-07-10 | 2021-09-03 | 成都辰显光电有限公司 | Color conversion assembly, display panel and display device |
| US11726359B2 (en) | 2019-08-29 | 2023-08-15 | Vivo Mobile Communication Co., Ltd. | Display module and electronic device |
| CN113130458A (en) * | 2019-12-31 | 2021-07-16 | Tcl集团股份有限公司 | Light-emitting unit, backlight structure, display panel and manufacturing method of light-emitting source |
| WO2021233102A1 (en) * | 2020-05-22 | 2021-11-25 | 北京芯海视界三维科技有限公司 | Light emitting module, display module, display screen, and display |
| WO2022089024A1 (en) * | 2020-10-29 | 2022-05-05 | 深圳光峰科技股份有限公司 | Projection display system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220229222A1 (en) | Color Liquid Crystal Displays and Display Backlights | |
| CN109426034A (en) | Liquid crystal display device | |
| CN102866535B (en) | Liquid crystal display panel including photo conversion layer and liquid crystal display device | |
| US8545721B2 (en) | UV coating composition for LED color conversion | |
| CN105204221B (en) | Color membrane substrates, display panel and display device | |
| US20080116468A1 (en) | LED backlight using discrete RGB phosphors | |
| TW200939534A (en) | LED light source module | |
| US10121941B2 (en) | Light source device | |
| CN106501994A (en) | A kind of quantum dot light emitting device, backlight module and display device | |
| CN102810288B (en) | Backlight assembly and the display device including this backlight assembly | |
| CN103885242A (en) | Liquid crystal display device with a light guide plate | |
| CN105739176B (en) | Backlight module and display device | |
| CN109557714A (en) | Light supply apparatus and display device | |
| CN107167865A (en) | Side entrance back module and liquid crystal display device | |
| CN105425452A (en) | Backlight module and display device | |
| CN111183315A (en) | Color liquid crystal display and display backlight | |
| CN109799647A (en) | A kind of backlight and liquid crystal display die set | |
| CN114077085B (en) | Display panel, display device and electronic equipment | |
| CN100570448C (en) | Liquid crystal indicator and light-emitting device | |
| CN109725459A (en) | Lighting device and image display device | |
| TW201910885A (en) | Liquid crystal display device | |
| JP2004245996A (en) | Color correcting filter, back light unit, and liquid crystal display device | |
| US20130250209A1 (en) | High Color Expression Display Device and Method for Adjusting Displayed Color | |
| CN107219683A (en) | Display device, backlight module and back light | |
| CN114721184B (en) | Display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190305 |