CN109521604A - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
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- CN109521604A CN109521604A CN201811570412.3A CN201811570412A CN109521604A CN 109521604 A CN109521604 A CN 109521604A CN 201811570412 A CN201811570412 A CN 201811570412A CN 109521604 A CN109521604 A CN 109521604A
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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
-
- 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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- 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
-
- 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)
- Planar Illumination Modules (AREA)
Abstract
The embodiment of the invention discloses a kind of backlight module and display devices, the backlight module is in addition to including backlight and color conversion layer, it further include the optical film for deviating from backlight side positioned at color conversion layer, orthographic projection of the optical film on color conversion layer is located within the scope of the second area in the output optical zone domain of color conversion layer, and optical film is greater than optical film to the absorptivity of the light of the second color to the absorptivity of the light of the first color, so as to be absorbed using light of the optical film to the first color of part in the light of the second area outgoing of color conversion layer, so that the light of color conversion layer outgoing is after optical film, the ratio of the light of the first color reduces in the light of corresponding color conversion layer second area, reduce in backlight module emergent ray, the difference of the light proportion of first color in fringe region and central area, Improve the quality of display picture.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of backlight module and the display including the backlight module fills
It sets.
Background technique
High dynamic range images (High-Dynamic Range, abbreviation HDR), compared to common image, can provide more
More dynamic ranges and image detail can preferably reflect the visual effect in true environment, be increasingly becoming display field
Important research direction.But in the display picture of the existing display device using HDR display pattern, show the surrounding of picture
Region is partially blue compared with the central area of display picture, influences the display image quality of the display device.
Summary of the invention
In order to solve the above technical problems, the embodiment of the invention provides a kind of backlight module and including the backlight module
Display device, to improve the quality of the display picture of the display device.
To solve the above problems, the embodiment of the invention provides following technical solutions:
A kind of backlight module, comprising:
Backlight, the backlight generate the light of the first color；
Positioned at the color conversion layer of the backlight light emission side, the emergent ray of the color conversion layer includes described first
The light of the light of color and the second color, and the output optical zone domain of the color conversion layer includes first area and surrounds described
The second area of first area；
Deviate from the optical film of the backlight side positioned at the color conversion layer, the optical film is converted in the color
Orthographic projection on layer is located within the scope of the second area, and the optical film is big to the absorptivity of the light of first color
In the optical film to the absorptivity of the light of second color.
Optionally, orthographic projection of the optical film on the color conversion layer is overlapped with the second area.
Optionally, the emergent ray of the color conversion layer further includes the light of third color, and the optical film is to described
The absorptivity of the light of first color is greater than the optical film to the absorptivity of the light of the third color.
Optionally, the optical film is 5%-60% to the absorptivity value range of the light of first color, including
Endpoint value.
Optionally, the second area includes multiple compositing areas, and the different compositing areas are located at the first area
It is not ipsilateral, the compositing area along the width of its region to the first area direction value range be 0mm-2mm,
Including right end point value.
Optionally, further includes: deviate from the diffusion barrier of the backlight side positioned at the color conversion layer.
Optionally, the optical film is located at the diffusion barrier towards one side surface of color conversion layer and/or is located at institute
Diffusion barrier is stated away from one side surface of color conversion layer.
Optionally, further includes: deviate from least one layer of brightness enhancement film of the color conversion layer side positioned at the diffusion barrier.
Optionally, the optical film is located at the brightness enhancement film towards one side surface of diffusion barrier and/or is located at the increasing
Bright film deviates from one side surface of diffusion barrier.
Optionally, the backlight includes: substrate and is fixed on the multiple LED lights being arranged in array of the substrate surface
Source.
A kind of display device, comprising: backlight module described in any of the above embodiments and be located at the backlight module light emission side
Display module.
Compared with prior art, above-mentioned technical proposal has the advantage that
In technical solution provided by the embodiment of the present invention, it includes the backlight and the color that the backlight module, which removes,
It further include the optical film for deviating from the backlight side positioned at the color conversion layer, the optical film is described outside conversion layer
Orthographic projection on color conversion layer is located within the scope of the second area, and the optical film is to the light of first color
Absorptivity is greater than the optical film to the absorptivity of the light of second color, so as to utilize the optical film to described
The light of the first color of part in the light of the second area outgoing of color conversion layer is absorbed, so that the color is converted
The light of layer outgoing corresponds to the first color described in the light of the color conversion layer second area after the optical film
The ratio of light reduces, and reduces in the backlight module emergent ray, the light of the first color in fringe region and central area
The difference of proportion, equilibrium include in the fringe region and display picture of the display picture of the display device of the backlight module
The coloration in heart district domain improves the quality of display picture.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of backlight module provided by one embodiment of the invention；
Fig. 2 is the structural schematic diagram of backlight module provided by another embodiment of the present invention；
Fig. 3 is the top view of the color conversion layer in backlight module provided by one embodiment of the invention；
Fig. 4 is the top view of the color conversion layer in backlight module provided by another embodiment of the present invention；
Fig. 5 is the top view of the color conversion layer in backlight module provided by another embodiment of the invention；
Fig. 6 is the top view of the color conversion layer in backlight module provided by further embodiment of the present invention；
Fig. 7 is the structural schematic diagram of backlight module provided by another embodiment of the invention；
Fig. 8 is the structural schematic diagram of backlight module provided by further embodiment of the present invention；
Fig. 9 is the structural schematic diagram of backlight module provided by another embodiment of the invention；
Figure 10 is the structural schematic diagram of backlight module provided by further embodiment of the present invention；
Figure 11 is the structural schematic diagram of backlight module provided by another embodiment of the invention；
Figure 12 is the structural schematic diagram of backlight module provided by further embodiment of the present invention；
Figure 13 is the structural schematic diagram of backlight module provided by another embodiment of the invention；
Figure 14 is the structural schematic diagram of backlight module provided by further embodiment of the present invention；
Figure 15 is the structural schematic diagram of backlight module provided by another embodiment of the invention；
Figure 16 is the structural schematic diagram of backlight module provided by further embodiment of the present invention；
Figure 17 is the structural schematic diagram of backlight module provided by another embodiment of the invention；
Figure 18 is the structural schematic diagram of display device provided by one embodiment of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
Implemented using other than the one described here other way, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by the specific embodiments disclosed below.
Secondly, combination schematic diagram of the present invention is described in detail, when describing the embodiments of the present invention, for purposes of illustration only, table
Show that the sectional view of device architecture can disobey general proportion and make partial enlargement, and the schematic diagram is example, is not answered herein
Limit the scope of protection of the invention.In addition, the three-dimensional space of length, width and depth should be included in actual fabrication.
Existing display device generally includes the display panel and backlight module of stacking, and the backlight module is direct-type backlight
Mould group, including multiple LED light sources composition LED array and positioned at the fluorescent film of the LED array light light emission side, wherein
The LED light source is blue-ray LED, issues blue ray, the excitation for the blue ray that the fluorescent film is emitted in the LED light source
Under, the light that the blue ray that the LED light source is emitted is converted into multiple colors is projected, the light mixing of the multiple color
White light is formed, in order to which the white light that the display panel can use the backlight module outgoing carries out the display of picture.
But the fluorescent film in existing backlight module is all the fluorescent film of one large area of unified production in production, so
Afterwards further according to actual needs, the fluorescent film of the large area is cut into the fluorescent film of multiple small areas, so that a fluorescence
The corresponding display device of the corresponding backlight module of film specifically when cutting, due to the limitation of technique cutting precision, is cut into each
The fluorescent material of the central area of the concentration of fluorescent material on the cut surface of the fluorescent film of the small area fluorescent film it is dense
Spend it is low so that the fluorescent film of the small area is under the excitation for the blue ray that LED light source is issued, the light of fringe region
Transfer efficiency is lower than the light transfer efficiency of central area, so that the coloration of the white light of fringe region outgoing is compared with central area
The coloration of the white light of outgoing is partially blue, shows so that display panel carries out colored display picture using the emergent ray of the backlight module
When, it shows that the fringe region of picture is partially blue compared with the central area of display picture, influences the quality for showing picture.
In addition, multiple LED light sources are at array arrangement, and the light that each LED light source issues is in radiation in the backlight module
Shape, so that the light that the light intensity of the central area of the LED array is greater than the fringe region of the LED array is strong
Degree, so that the light ray energy of the central area of the LED array is greater than the light energy of the fringe region of the LED array
Amount, can also make in this way include the backlight module display device display picture fringe region compared with show picture center
Domain is partially blue, influences the quality for showing picture.
It should be noted that, although the LED light source in the backlight module is usually blue-ray LED at present, but the present invention couple
This and without limitation, in other embodiments of the invention, LED light source in the backlight module can also be to issue other face
The LED of coloured light line, such as red-light LED, green light LED or purple LED, when the LED light source in the backlight module is red-light LED
When, in the display picture of the display device including the backlight module, fringe region is partially red compared with central area, when the backlight module
Light source when being green light LED, in the display picture of the display device including the backlight module, fringe region is inclined compared with central area
It is green.
In view of this, the embodiment of the invention provides a kind of backlight modules, as shown in Figure 1, the backlight module includes:
Backlight 10, the backlight 10 generate the light of the first color；
Positioned at the color conversion layer 20 of 10 light emission side of backlight, the emergent ray of the color conversion layer 20 includes institute
State the light of the first color and the light of the second color, and the output optical zone domain of the color conversion layer 20 include first area 21 with
And the second area 22 around the first area 21；
Deviate from the optical film 30 of 10 side of backlight positioned at the color conversion layer 20, the optical film 30 is described
Orthographic projection on color conversion layer 20 is located in 22 range of second area, and the optical film 30 is to first color
Light absorption is greater than the optical film to the absorptivity of the light of second color.
Specifically, in one embodiment of the invention, continue as shown in Figure 1, the backlight 10 include: substrate and
Multiple LED light sources of the substrate towards 20 1 side surface of color conversion layer are fixed on, the multiple LED light source is in array
Arrangement, optionally, the LED light source are blue-ray LED, but the present invention is to this and without limitation, in the other embodiment of the present invention
In, the LED light source can also be the LED for issuing other color lights, specifically depend on the circumstances.Below with first color
For blue, it is provided for the embodiments of the invention backlight module and is described.
On the basis of the above embodiments, in one embodiment of the invention, the color conversion layer 20 is fluorescent film,
The concentration of the fluorescent material of the fringe region of the fluorescent film is less than the concentration of the fluorescent material of the central area of the fluorescent film,
So that the fluorescent film is under the excitation of 10 emergent ray of backlight, the light of the fluorescent film fringe region outgoing
In, in the light that the central area that ratio shared by blue light is greater than the fluorescent film is emitted, ratio shared by blue light, so that including
The fringe region of the display picture of the display device of the backlight module is partially blue compared with the central area of the display picture, influences to show picture
The quality in face.I.e. in embodiments of the present invention, at work, the color conversion layer 20 is by the backlight for the backlight module
The light that some light is converted into the second color in the light of first color of 10 outgoing projects, so that the color conversion layer 20
The light of outgoing includes the light of the first color and the light of the second color, the light of 20 fringe region of the color conversion layer outgoing
In line, in the light that the central area that ratio shared by the light of first color is greater than the color conversion layer 20 is emitted,
Ratio shared by the light of first color, so that including the fringe region of the display picture of the display device of the backlight module
The first color inclined compared with the central area of the display picture influences the quality for showing picture.
And in backlight module provided by the embodiment of the present invention, the backlight module is removed including the backlight 10 and described
It further include the optical film 30 for deviating from 10 side of backlight positioned at the color conversion layer 20 outside color conversion layer 20, it is described
Optical film 30 is located in 22 range of second area in the orthographic projection on the color conversion layer 20, and the optical film 30 is right
The absorptivity of the light of first color is greater than the optical film 30 to the absorptivity of the light of second color, so as to
To utilize the optical film 30 to the first color of part in the light of the outgoing of second area 22 of the color conversion layer 20
Light is absorbed, so that the light that the color conversion layer 20 is emitted, after the optical film 30, the corresponding color turns
The ratio for changing the light of the first color described in the light of 20 second area 22 of layer reduces, and reduces the backlight module emergent ray
In, the difference of the light proportion of the first color in fringe region and central area, equilibrium includes the display of the backlight module
The coloration of the central area of the fringe region and display picture of the display picture of device, improves the quality of display picture.
Based on any of the above embodiments, in one embodiment of the invention, the optical film 30 is in the face
Orthographic projection on color converting layer 20 is overlapped with the second area 22, so that the optical film 30 can be to the optical transition
The coloration of layer 22 whole region emergent ray of second area is adjusted, and reduces the fringe region of the backlight module as far as possible
The difference of the light proportion of the first color, equilibrium include in the emergent ray of each position and the emergent ray of central area
The coloration of the central area of each position of fringe region and display picture of the display picture of the display device of the backlight module, mentions
The uniformity of height display picture.
Based on any of the above embodiments, in one embodiment of the invention, the color conversion layer 20 go out
The light that light further includes third color is penetrated, the optical film 30 is greater than the light to the absorptivity of the light of first color
Film 30 is learned to the absorptivity of the light of the third color, in the light for reducing first color using the optical film 30
On the basis of ratio in the emergent ray of the backlight module, reduce the optical film 30 to the light of the third color
The influence of proportion in the emergent ray of the backlight module.
Optionally, on the basis of the above embodiments, in one embodiment of the invention, first color is indigo plant
Color, second color are red, and the third color is green；In another embodiment of the present invention, first face
Color is blue, and second color is green, and the third color is red；In other embodiments of the invention, described
One color can also be other colors, correspondingly, second color and/or the third color may be other colors,
Specifically depend on the circumstances.
Based on any of the above embodiments, in one embodiment of the invention, as shown in Fig. 2, the optical film
There is preset distance, to reduce the setting of the optical film 30 to the color conversion layer between 30 and the color conversion layer 20
The influence of the light emission rate of 20 second area 22, but the present invention is to this and without limitation, specifically depends on the circumstances.
It should be noted that in embodiments of the present invention, having between the optical film 30 and the color conversion layer 20
Preset distance can realize by support construction, can also be by the way that backlight is arranged between optical film 30 and color conversion layer 20
Other film layers of mould group realize, the present invention to this and without limitation, specifically depends on the circumstances.
Based on any of the above embodiments, in one embodiment of the invention, the optical film 30 is to described
The absorptivity value range of the light of one color is 5%-60%, including endpoint value.Optionally, specific real at of the invention one
It applies in example, first color is blue, when the wavelength of the light of first color is in the blue light of 380nm-480nm range
When wave band, the optical film 30 is 28% to the absorptivity of the light of first color, when the light of first color
When wavelength is in the 450nm-470nm wave band of blue-ray LED outgoing, absorption of the optical film 30 to the light of first color
Rate is 31%.It can be seen that in embodiments of the present invention, 30 pairs of blue light of the optical film are imitated with good absorption
Second area blue light transmitance can be effectively reduced in fruit, balances the coloration of second area and first area, is effectively improved edge hair
Blue phenomenon improves the quality of display picture.
Based on any of the above embodiments, in one embodiment of the invention, the second area includes multiple
Compositing area, the different compositing areas are located at the not ipsilateral of the first area, the compositing area along its region extremely
The width value range in the direction of the first area is 0mm-2mm, including right end point value, so that the optical film is only located at
The biggish region of light proportion of the first color, avoids the optical film from extending in the light of the color conversion layer outgoing
The first lesser region of color light proportion into the light of color conversion layer outgoing, in the display picture
Heart district domain carries out color correction, influences the display quality of the display picture central area.It should be noted that of the invention real
It applies in example, the width of the different compositing areas may be the same or different, and it is partially blue specifically to regard color in the display picture
Depending on the range in region.
Specifically, on the basis of the above embodiments, in one embodiment of the invention, as shown in figure 3, described second
Region 22 includes the first compositing area 221 and the second compositing area 222 being oppositely arranged, first compositing area 221 and institute
It states the second compositing area 222 and is located at the opposite two sides in the first area 21, such as first compositing area 221 is located at described the
The left side in one region 21, second compositing area 222 are located at the right side of the first area 21, or as shown in figure 4, described
One compositing area 221 is located at the upside of the first area 21, and second compositing area 222 is located at the second area 22
Downside.Wherein, first compositing area 221 is along first compositing area 221 to the width in 21 direction of first area
D1 value range is 0mm-2mm, including endpoint value；Second compositing area 222 is along second compositing area 222 to described
2 value range of width D in 21 direction of first area is 0mm-2mm, including endpoint value.It should be noted that implementing in the present invention
In example, first compositing area 221 is along the width of first compositing area 221 to 21 direction of first area and described
Width of second compositing area 222 along second compositing area 222 to 21 direction of first area can be identical, can also be with
Difference, the present invention to this and without limitation, specifically depend on the circumstances.
In another embodiment of the present invention, the second area 22 includes the first compositing area for being disposed adjacent and the
Three compositing areas, first compositing area and the third compositing area are located at the adjacent two sides in the first area, such as such as
Shown in Fig. 5, first compositing area 221 is located at the left side of the first area 21, and the third compositing area 223 is located at institute
The upside or downside or first compositing area of stating first area 21 are located at the right side of the first area, the third group
It is located at the upside or downside of the first area at region.Wherein, first compositing area 221 is along first compositing area
221 1 value range of width D to 21 direction of first area is 0mm-2mm, including endpoint value；The third compositing area
223 along the third compositing area 223 to 21 direction of first area 3 value range of width D be 0mm-2mm, including end
Point value.It should be noted that in embodiments of the present invention, first compositing area 221 along first compositing area 221 to
The width and the third compositing area 223 in 21 direction of first area are along the third compositing area 223 to described first
The width in 21 direction of region may be the same or different, and the present invention to this and without limitation, specifically depends on the circumstances.
In yet another embodiment of the present invention, as shown in fig. 6, the second area 22 includes first group be oppositely arranged
It is optional at region 221 and the second compositing area 222 and the third compositing area 223 and the 4th compositing area 224 that are oppositely arranged
, first compositing area 221 is located at the left side of the first area 21, and second compositing area 222 is located at described the
The right side in one region 21, the third compositing area 223 are located at the upside of the first area 21, and the 4th composition is located at institute
State the downside of first area 21.Wherein, first compositing area 221 is along first compositing area 221 to firstth area
1 value range of width D in 21 direction of domain is 0mm-2mm, including endpoint value；Second compositing area 222 is along described second group
2 value range of width D at region 222 to 21 direction of first area is 0mm-2mm, including endpoint value；The third group
At region 223 along the third compositing area 223 to 21 direction of first area 3 value range of width D be 0mm-2mm,
Including endpoint value, the 4th compositing area 224 is along the 4th compositing area 224 to the width in 21 direction of first area
D4 value range is 0mm-2mm, including endpoint value.It should be noted that in embodiments of the present invention, first compositing area
221 along first compositing area 221 to 21 direction of first area width with second compositing area 222 along described
The width in the second compositing area 222 to 21 direction of first area may be the same or different, the third compositing area
223 along the third compositing area 223 to 21 direction of first area width with the 4th compositing area 224 along described
The width in the 4th compositing area 224 to 21 direction of first area may be the same or different, first compositing area
221 along first compositing area 221 to 21 direction of first area width and the third compositing area 223 along described
The width in third compositing area 223 to 21 direction of first area may be the same or different, second compositing area
222 along second compositing area 222 to 21 direction of first area width with the 4th compositing area 224 along described
The width in the 4th compositing area 224 to 21 direction of first area may be the same or different, and the present invention does not do this
It limits, specifically depends on the circumstances.
Based on any of the above embodiments, in one embodiment of the invention, as shown in fig. 7, the backlight mould
Group further include: deviate from the diffusion barrier 40 of 10 side of backlight, positioned at the color conversion layer 20 to utilize the diffusion barrier
The emergent ray of 40 pairs of color conversion layers 20 is diffused, and improves the uniformity of the emergent ray of the backlight module.
On the basis of the above embodiments, in one embodiment of the invention, the optical film 30 can be located at described
Diffusion barrier 40 is towards the side of the color conversion layer 20, as shown in figure 8, the i.e. described diffusion barrier 40 is towards the color conversion layer
20 1 side surfaces are provided with optical film 30, can also be located at the side that the diffusion barrier 40 deviates from the color conversion layer 20, after
It is continuous as shown in fig. 7, the i.e. described diffusion barrier 40 is provided with optical film 30 away from 20 side of color conversion layer, can also both be located at
The diffusion barrier 40 is located at the diffusion barrier 40 and deviates from the color conversion layer towards 20 1 side surface of color conversion layer
20 1 side surfaces, i.e., the described diffusion barrier 40 are equal towards the color conversion layer 20 and away from 20 1 side surface of color conversion layer
It is provided with optical film 30, as shown in figure 9, in embodiments of the present invention, the optical film includes the first optical film 31 and the second light
Learn film 32, wherein first optical film 31 is set to the diffusion barrier 40 towards 20 1 side surface of color conversion layer, institute
It states the second optical film 32 and is set to the diffusion barrier 40 away from 20 1 side surface of color conversion layer, the present invention does not do this
It limits, specifically depends on the circumstances.
It should be noted that in the above-described embodiments, corresponding 20 first area of color conversion layer of the diffusion barrier 40
21 thickness can be identical with the thickness of corresponding 20 second area 22 of color conversion layer of the diffusion barrier 40, can also not
Together.When the thickness face corresponding with the diffusion barrier 40 of corresponding 20 first area 21 of color conversion layer of the diffusion barrier 40
When the thickness difference of 20 second area 22 of color converting layer, corresponding 20 second area 22 of color conversion layer of the diffusion barrier 40
Thickness is chosen as being less than the thickness of corresponding 20 first area 21 of color conversion layer of the diffusion barrier 40, so that the diffusion
After the optical film is arranged in 40 surface of film, the optical film 30 is right away from 40 1 side surface of diffusion barrier and the diffusion barrier 40
Answer the surface of 20 first area 21 of color conversion layer equal, and/or, the optical film 30 is towards 40 side of diffusion barrier
The surface of surface 20 first area 21 of color conversion layer corresponding with the diffusion barrier 40 is equal, but the present invention does not do this
It limits, specifically depends on the circumstances.
Based on any of the above embodiments, in one embodiment of the invention, the backlight module further include: position
Deviate from least one layer of brightness enhancement film of the color conversion layer side in the diffusion barrier, at least one layer brightness enhancement film is for enhancing
The diffusion barrier improves the outgoing of the backlight module towards the light transmission amount at one side surface of at least one layer of brightness enhancement film
The intensity of light.
On the basis of the above embodiments, in one embodiment of the invention, the optical film can be described in extremely
Few one layer of brightness enhancement film is towards one side surface of diffusion barrier, i.e., described at least one layer of brightness enhancement film is towards one side surface of diffusion barrier
It is provided with optical film, at least one layer of brightness enhancement film can also be located at and deviate from one side surface of diffusion barrier, i.e., described at least one
Layer brightness enhancement film is provided with optical film away from one side surface of diffusion barrier, can also both be located at least one layer of brightness enhancement film direction
One side surface of diffusion barrier, and be located at least one layer of brightness enhancement film and deviate from one side surface of diffusion barrier, i.e., it is described at least
One layer of brightness enhancement film is provided with optical film towards one side surface of diffusion barrier and away from one side surface of diffusion barrier, the present invention
To this and without limitation, specifically depend on the circumstances.
Specifically, based on any of the above embodiments, in one embodiment of the invention, as shown in Figure 10, institute
Stating at least one layer of brightness enhancement film includes deviating from the first brightness enhancement film 50 of 10 side of backlight, institute positioned at the color conversion layer 20
The first brightness enhancement film 50 is stated for reducing the diffusion barrier 40 towards the light volume reflection at 50 1 side surface of the first brightness enhancement film,
The diffusion barrier 40 is improved towards the light transmission amount at 50 1 side surface of the first brightness enhancement film, to improve the backlight mould
The intensity of the emergent ray of group.
On the basis of the above embodiments, in one embodiment of the invention, continue as shown in Figure 10, described first increases
Bright film 50 is provided with the optical film 30 towards 40 side of diffusion barrier；In another embodiment of the present invention, such as Figure 11
Shown, first brightness enhancement film 50 is provided with the optical film 30 away from 40 1 side surface of diffusion barrier；It is of the invention again
In one embodiment, first brightness enhancement film is all provided with towards one side surface of diffusion barrier and away from one side surface of diffusion barrier
It is equipped with optical film, as shown in figure 12, the optical film includes third optical film 33 and the 4th optical film 34, first brightness enhancement film
50 are provided with third optical film 33 towards 40 1 side surface of diffusion barrier, and first brightness enhancement film 50 deviates from the diffusion barrier 40
One side surface is provided with the 4th optical film 34, and the present invention to this and without limitation, specifically depends on the circumstances.
It should be noted that in embodiments of the present invention, the corresponding color conversion layer of first brightness enhancement film 50 20 the
The thickness in one region 21 can be identical with the thickness of corresponding 20 second area 22 of color conversion layer of first brightness enhancement film 50,
It can also be different.When the thickness and described first of corresponding 20 first area 21 of color conversion layer of first brightness enhancement film 50 increases
When the thickness difference of corresponding 20 second area 22 of color conversion layer of bright film 50, optionally, first brightness enhancement film 50 is corresponding
The thickness of 20 second area 22 of color conversion layer is less than the corresponding color conversion layer 20 first of first brightness enhancement film 50
The thickness in region 21 so that after the optical film 30 is arranged in 50 surface of the first brightness enhancement film, first brightness enhancement film 50 and
The whole thickness of its surface optical film 30 composition is identical everywhere.
In another embodiment of the present invention, as shown in figure 13, at least one layer of brightness enhancement film includes being located at the face
Color converting layer 20 is away from the first brightness enhancement film 50 of 10 side of backlight and positioned at first brightness enhancement film 50 away from described
Second brightness enhancement film 60 of color conversion layer side, first brightness enhancement film 50 is for reducing the diffusion barrier 40 towards described first
Light volume reflection at 50 1 side surface of brightness enhancement film improves the diffusion barrier 40 towards at 50 1 side surface of the first brightness enhancement film
Light transmission amount, second brightness enhancement film 60 is for reducing first brightness enhancement film 50 towards 60 side of the second brightness enhancement film
It is saturating towards the light at 60 1 side surface of the second brightness enhancement film to increase by first brightness enhancement film 50 for light volume reflection at surface
The amount of penetrating, to improve the intensity of the emergent ray of the backlight module.
On the basis of the above embodiments, in one embodiment of the invention, as shown in figure 14, first brightness enhancement film
50 are provided with optical film 30 towards 40 1 side surface of diffusion barrier.In embodiments of the present invention, first brightness enhancement film 50 is right
Answer the thickness of 20 first area 21 of the color conversion layer color conversion layer 20 second corresponding with first brightness enhancement film 50
The thickness in region 22 may be the same or different.When corresponding 20 first area of color conversion layer of first brightness enhancement film 50
It is optional when the thickness difference of the thickness in domain 21 20 second area 22 of color conversion layer corresponding with first brightness enhancement film 50
, it is right that the thickness of corresponding 20 second area 22 of color conversion layer of first brightness enhancement film 50 is less than first brightness enhancement film 50
The thickness of 20 first area 21 of color conversion layer is answered, so that the optical film 30 is arranged in 50 surface of the first brightness enhancement film
Afterwards, the whole thickness of the optical film 30 on first brightness enhancement film 50 and its surface composition is identical everywhere, so that described first
The whole surface towards 40 side of diffusion barrier of the optical film 30 on brightness enhancement film 50 and its surface composition is plane.
In another embodiment of the present invention, as shown in figure 15, second brightness enhancement film 60 deviates from first blast
50 side of film is provided with optical film 30, in embodiments of the present invention, the corresponding color conversion layer 20 of second brightness enhancement film 60
The thickness of the thickness of first area 21 20 second area 22 of color conversion layer corresponding with second brightness enhancement film 60 can phase
Together, it can also be different.When the thickness of corresponding 20 second area 22 of color conversion layer of second brightness enhancement film 60 and described the
When the thickness difference of corresponding 20 first area 21 of color conversion layer of two brightness enhancement films 60, optionally, second brightness enhancement film 60
The thickness of corresponding 20 second area 22 of color conversion layer is less than the corresponding color conversion layer 20 of second brightness enhancement film 60
The thickness of first area 21, so that the whole thickness of the optical film 30 on second brightness enhancement film 60 and its surface composition is everywhere
It is identical, so that the entirety of the optical film 30 on second brightness enhancement film 60 and its surface composition deviates from 40 side of diffusion barrier
Surface be plane, convenient for the formation of subsequent other structures.
In yet another embodiment of the present invention, as shown in figure 16, first brightness enhancement film 50 deviates from the diffusion barrier 40
One side surface is provided with optical film 30.In embodiments of the present invention, the corresponding color conversion layer 20 of first brightness enhancement film 50
The thickness of the thickness of first area 21 20 second area 22 of color conversion layer corresponding with first brightness enhancement film 50 can phase
Together, it can also be different.When the thickness of corresponding 20 first area 21 of color conversion layer of first brightness enhancement film 50 and described the
When the thickness difference of corresponding 20 second area 22 of color conversion layer of one brightness enhancement film 50, optionally, first brightness enhancement film 50
The thickness of corresponding 20 second area 22 of color conversion layer is less than the corresponding color conversion layer 20 of first brightness enhancement film 50
The thickness of first area 21, so that after the optical film 30 is arranged in 50 surface of the first brightness enhancement film, first brightness enhancement film
50 and its surface the whole thickness that forms of optical film 30 it is identical everywhere so that first brightness enhancement film 50 and its surface
The entirety that optical film 30 forms is plane away from the surface of 40 side of diffusion barrier, consequently facilitating second brightness enhancement film 60
It is formed.
In yet another embodiment of the present invention, as shown in figure 17, second brightness enhancement film 60 is towards first blast
50 side of film is provided with optical film 30, in embodiments of the present invention, the corresponding color conversion layer 20 of second brightness enhancement film 60
The thickness of the thickness of first area 21 20 second area 22 of color conversion layer corresponding with second brightness enhancement film 60 can phase
Together, it can also be different.When the thickness of corresponding 20 second area 22 of color conversion layer of second brightness enhancement film 60 and described the
When the thickness difference of corresponding 20 first area 21 of color conversion layer of two brightness enhancement films 60, optionally, second brightness enhancement film 60
The thickness of corresponding 20 second area 22 of color conversion layer is less than the corresponding color conversion layer 20 of second brightness enhancement film 60
The thickness of first area 21, so that the whole thickness of the optical film 30 on second brightness enhancement film 60 and its surface composition is everywhere
It is identical.
It should be noted that above-described embodiment is to only include one layer of optical film at least one layer of brightness enhancement film and be
Example, is described, the present invention to this and without limitation, in other embodiments of the invention, at least one layer of blast
It can also include at least two layers of optical film in film, i.e., described first brightness enhancement film is towards one side surface of diffusion barrier, described first
Brightness enhancement film is away from one side surface of diffusion barrier, second brightness enhancement film towards one side surface of the first brightness enhancement film and described
Second brightness enhancement film, at least two surfaces in one side surface of the first brightness enhancement film are provided with optical film, specifically optionally and
It is fixed.
It should also be noted that, although the various embodiments described above are at least one layer of brightness enhancement film include the first brightness enhancement film or
Include simultaneously the backlight module is described for the first brightness enhancement film and the second brightness enhancement film, but the present invention to this not
Limit, in other embodiments of the invention, the brightness enhancement film can also include more layers brightness enhancement film, specifically optionally and
It is fixed.
In embodiments of the present invention, the optical film number of plies for including in the backlight module is more, the backlight module outgoing
Light in, ratio shared by the light of the first color is got in the light of corresponding color conversion layer second area part
It is small, but in embodiments of the present invention, the optical film number of plies for including in the backlight module is not The more the better, but the optics
The number of plies of film enables in the light of the backlight module outgoing, the light of corresponding color conversion layer second area part
In the first color light shared by ratio and corresponding color conversion layer first area part light in the first color
Light shared by ratio closer to better.
In addition, the embodiment of the invention also provides a kind of display devices, as shown in figure 18, which includes backlight mould
Group 100 and positioned at 100 light emission side of backlight module display panel 200, wherein the backlight module 100 be above-mentioned
Display module provided by one embodiment.
Optionally, in one embodiment of the invention, the display panel is liquid crystal display panel, but the present invention is to this
And without limitation, as long as the display panel is passive type display panel.
On the basis of the above embodiments, in one embodiment of the invention, the display panel only has display function
Can, in another embodiment of the present invention, the display panel not only has display function, also has touch function, this hair
It is bright to this and without limitation, specifically depend on the circumstances.
To sum up, in backlight module and display device provided by the embodiment of the present invention, it includes described that the backlight module, which removes,
It further include the optical film for deviating from the backlight side positioned at the color conversion layer outside backlight and the color conversion layer,
The optical film is located within the scope of the second area in the orthographic projection on the color conversion layer, and the optical film is to described
The absorptivity of the light of first color is greater than the optical film to the absorptivity of the light of second color, so as to utilize
The optical film absorbs the light of the first color of part in the light of the second area outgoing of the color conversion layer,
So that the light that the color conversion layer 20 is emitted after the optical film, corresponds to the light of the color conversion layer second area
The ratio of the light of first color described in line reduces, and reduces in the backlight module emergent ray, fringe region and center
The difference of the light proportion of first color in domain, equilibrium include the edge of the display picture of the display device of the backlight module
The coloration in region and the central area of display picture, improves the quality of display picture.
Various pieces are described in a progressive manner in this specification, and what each some importance illustrated is and other parts
Difference, same and similar part may refer to each other between various pieces.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to embodiment illustrated herein, and is to fit to consistent with the principles and novel features disclosed in this article
Widest scope.
Claims (11)
1. a kind of backlight module characterized by comprising
Backlight, the backlight generate the light of the first color；
Positioned at the color conversion layer of the backlight light emission side, the emergent ray of the color conversion layer includes first color
Light and the second color light, and the output optical zone domain of the color conversion layer includes first area and around described first
The second area in region；
Deviate from the optical film of the backlight side positioned at the color conversion layer, the optical film is on the color conversion layer
Orthographic projection be located within the scope of the second area, and the optical film is greater than institute to the absorptivity of the light of first color
Optical film is stated to the absorptivity of the light of second color.
2. backlight module according to claim 1, which is characterized in that the optical film on the color conversion layer just
Projection is overlapped with the second area.
3. backlight module according to claim 1, which is characterized in that the emergent ray of the color conversion layer further includes
The light of three colors, the optical film are greater than the optical film to the third face to the absorptivity of the light of first color
The absorptivity of the light of color.
4. backlight module according to claim 1, which is characterized in that the optical film is to the light of first color
Absorptivity value range is 5%-60%, including endpoint value.
5. backlight module according to claim 1, which is characterized in that the second area includes multiple compositing areas, no
It is located at the not ipsilateral of the first area with the compositing area, the compositing area is along its region to the first area
The value range of the width in direction is 0mm-2mm, including right end point value.
6. backlight module according to claim 1-5, which is characterized in that further include:
Deviate from the diffusion barrier of the backlight side positioned at the color conversion layer.
7. backlight module according to claim 6, which is characterized in that the optical film is located at the diffusion barrier described in
One side surface of color conversion layer and/or be located at the diffusion barrier deviate from one side surface of color conversion layer.
8. backlight module according to claim 6, which is characterized in that further include:
Deviate from least one layer of brightness enhancement film of the color conversion layer side positioned at the diffusion barrier.
9. backlight module according to claim 8, which is characterized in that the optical film is located at the brightness enhancement film described in
One side surface of diffusion barrier and/or be located at the brightness enhancement film deviate from one side surface of diffusion barrier.
10. backlight module described in -5 according to claim 1, which is characterized in that the backlight includes:
Substrate and it is fixed on the multiple LED light sources being arranged in array of the substrate surface.
11. a kind of display device characterized by comprising
The described in any item backlight modules of claim 1-10 and display module positioned at the backlight module light emission side.
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| CN201811570412.3A CN109521604A (en) | 2018-12-21 | 2018-12-21 | A kind of backlight module and display device |
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| CN201811570412.3A CN109521604A (en) | 2018-12-21 | 2018-12-21 | A kind of backlight module and display device |
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| CN201811570412.3A Pending CN109521604A (en) | 2018-12-21 | 2018-12-21 | A kind of backlight module and display device |
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Application publication date: 20190326 |