CN109841753A - Light removing layer and preparation method thereof, display panel - Google Patents
Light removing layer and preparation method thereof, display panel Download PDFInfo
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- CN109841753A CN109841753A CN201910107907.0A CN201910107907A CN109841753A CN 109841753 A CN109841753 A CN 109841753A CN 201910107907 A CN201910107907 A CN 201910107907A CN 109841753 A CN109841753 A CN 109841753A
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- light
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Abstract
This disclosure relates to field of display technology more particularly to a kind of smooth removing layer, its production method of light removing layer, display panel.The light removing layer includes optical flat and optics cambered surface, and optics cambered surface is opposite with optical flat, and optical arc is protruded away from the direction of optical flat.The light removing layer can improve the color difference of display panel, improve user experience.
Description
Technical field
This disclosure relates to the production method and display of field of display technology more particularly to a kind of smooth removing layer, light removing layer
Panel.
Background technique
In recent years, with the fast development of display technology, to OLED, (Organic Light Emitting Diode, has
Machine light emitting diode) research of display device also achieves major progress.Light emission side in OLED display device emits beam, portion
Being divided into the big light of firing angle can be reflected back toward in OLED display device and can not go out.It therefore, can be in OLED display device light emission side
External addition light removing layer change the travelling route of light, to reduce the light being limited in OLED display device.
In the prior art, light removing layer is plate-like structure, so as to cause the Same Wavelength when exit direction changes
Light obtain different degrees of reinforcement or weakening, and then generate color difference, reduce user experience.
Above- mentioned information disclosed in the background technology part are only used for reinforcing the understanding to the background of the disclosure, therefore it can
To include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The disclosure is designed to provide a kind of smooth removing layer and preparation method thereof, display panel, can improve display surface
The color difference of plate and display device, and improve user experience.
For achieving the above object, the disclosure adopts the following technical scheme that
According to one aspect of the disclosure, a kind of smooth removing layer is provided comprising:
Optical flat；
Optics cambered surface, it is opposite with the optical flat, and the optical arc is convex away from the direction of the optical flat
Out.
In a kind of exemplary embodiment of the disclosure, the optics cambered surface is arc surface.
In a kind of exemplary embodiment of the disclosure, the radius of curvature of the arc surface is 250nm~350nm.
A kind of production method of smooth removing layer another aspect of the present disclosure provides comprising:
Light is formed in a substrate takes out material film；
Material film is taken out to the light and carries out Patternized technique, to form light removing layer described in above-mentioned any one,
The optical arc faces away from the direction protrusion of the substrate.
In a kind of exemplary embodiment of the disclosure, it is coining glue that the light, which takes out material film,.
In a kind of exemplary embodiment of the disclosure, material film is taken out to the light and carries out Patternized technique, with shape
At light removing layer, comprising:
Imprint process is carried out to the coining glue using impression block, to form the smooth removing layer.
In a kind of exemplary embodiment of the disclosure, coining work is carried out to the coining glue using impression block described
Skill, to be formed after light removing layer, further includes:
Curing process is carried out to the smooth removing layer.
A kind of display panel another aspect of the present disclosure provides comprising:
Substrate, the substrate include illumination region；And
Smooth removing layer described in any of the above embodiments, the smooth removing layer is set to the side of the illumination region, and the light takes
It is out the optics cambered surface away from the side of the illumination region on layer.
In a kind of exemplary embodiment of the disclosure, the substrate further include:
Array substrate；
Pixel confining layer is set in the array substrate, and is formed with pixel region in the pixel confining layer；
Sub-pixel is set in the pixel region, and between the illumination region and the smooth removing layer.
In a kind of exemplary embodiment of the disclosure, the illumination region and the smooth removing layer are set to the pixel region
In domain.
In a kind of exemplary embodiment of the disclosure, the optical flat is the incidence surface of the smooth removing layer, described
Optics cambered surface is the light-emitting surface of the smooth removing layer.
Light removing layer that the disclosure provides and preparation method thereof, display panel, by setting a face on light removing layer
It is set to optics cambered surface, so that the light path that light removing layer can pass through emergent light under different exit directions carries out different degrees of repair
It is whole, it may be assumed that tilt the light path reduction that the emergent light of outgoing passes through, the light path that the emergent light of vertical exit passes through increases, that is to say, that
The light removing layer can reduce the gap of the light path under different exit directions between each emergent light, so as to improve color difference problem,
And then improve user experience.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.It should be evident that the accompanying drawings in the following description is only the disclosure
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the schematic diagram of light removing layer in the prior art.
Fig. 2 is the schematic diagram in the path that emergent light passes through under different exit directions in the related technology.
Fig. 3 is the structural schematic diagram of disclosure embodiment light removing layer.
Fig. 4 is the schematic diagram of colour cast and outgoing angular dependence.
Fig. 5 is the flow chart of the production method of disclosure embodiment light removing layer.
Fig. 6 is the schematic diagram completed after step S110.
Fig. 7 is the schematic diagram completed after step S120.
Fig. 8 is the schematic diagram of disclosure embodiment impression block.
In figure: 1, plate-like structure；2, light removing layer；20, optical flat；21, optics cambered surface；3, substrate；31, array base
Plate；32, planarization layer；33, pixel confining layer；34, illumination region；35, sub-pixel；4, light takes out material film；5, impression block；
50, lug boss；51, arc patterns.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical attached drawing in figure
Label indicates same or similar structure, thus the detailed description that will omit them.
Although the term of relativity, such as "upper" "lower" is used to describe a component of icon for another in this specification
The relativeness of one component, but these terms are in this manual merely for convenient, for example, with reference to the accompanying drawings described in show
The direction of example.It is appreciated that, if making it turn upside down the device overturning of icon, the component described in "upper" will
As the component in "lower".When certain structure is at other structures "upper", it is possible to refer to that certain structural integrity is formed in other structures
On, or refer to that certain structure is " direct " and be arranged in other structures, or refer to that certain structure is arranged by the way that another structure is " indirect " in other knots
On structure.
In the figure for clarity, may be exaggerated the thickness of region and layer.Identical appended drawing reference indicates identical in figure
Or similar structure, thus the detailed description that them will be omitted.Term "one", " one ", "the", " described " to indicate existing
One or more elements/component part/etc.；Term " comprising " and " having " is to indicate the open meaning being included simultaneously
And the element/component part/for referring in addition to listing also may be present other than waiting other element/component part/etc.；Term " the
One ", " second " only uses as label, is not the quantity limitation to its object.
In the related technology, as shown in Figure 1, light removing layer is usually plate-like structure 1, such display panel in display panel
Go out light situation it is as shown in Figure 2.In Fig. 2, A point can be the light emitting source in display panel, P2It can going out for plate-like structure 1
Smooth surface, P1It can be the reflecting surface of display panel, this reflecting surface is used to the light that light emitting source issues reflexing to P2Place.Wherein, A point is sent out
Light (that is: emergent light) out can be projected vertically, it may be assumed that emergent light can be along P2Normal direction project, the reality of the emergent light vertically projected
Distance can be L1 shown in Fig. 2；Also tiltable is projected, it may be assumed that emergent light can be along the direction for the normal direction of P2 being in certain tilt angle gamma
It projects, the actual distance for tilting the emergent light of injection can be L2 shown in Fig. 2.Referring herein to the light path Δ m of emergent light can
It is indicated with following formula:
Δ m=L × n
Wherein, L is the actual distance of emergent light；N is the refractive index of light removing layer.
Due to microcavity effect, the emergent light of Same Wavelength can generate different degrees of reinforcement when light path is not identical or cut
It is weak, and then luminescent device is made color difference occur, reduce the experience property of user.
To solve the above problems, disclosure embodiment provides a kind of smooth removing layer 2, can be applied in display panel,
This display panel can be OLED display panel, but not limited to this, it can also be applied in other display panels.
As shown in figure 3, the light removing layer 2 in the present embodiment includes optical flat 20 and optics cambered surface 21, this optics cambered surface
21 is opposite with optical flat 20, and optics cambered surface 21 is protruded to the direction far from optical flat 20.
Wherein, this light removing layer 2 can be applied to top emitting OLED display panel (that is: refer to light from top device direction project
OLED display panel) in, when light removing layer 2 is applied in top emitting OLED display panel, the optics of this light removing layer 2 is flat
Face 20 can be incidence surface, and the optics cambered surface 21 of light removing layer 2 can be light-emitting surface, that is to say, that when top emitting OLED display surface
When plate works, the light that luminescent layer issues in the top emitting OLED display panel can enter in light removing layer 2 through optical flat 20, and
Launch through optics cambered surface 21.
(that is: refer to light from orientation substrate it should be noted that this light removing layer applies also for bottom emitting OLED display panel
The OLED display panel of injection), when light removing layer 2 is applied in bottom emitting OLED display panel, the optics of this light removing layer 2
Plane 20 is incidence surface, is also light-emitting surface；And the optics cambered surface 21 of light removing layer 2 can be reflecting surface, that is to say, that when bottom is sent out
When penetrating OLED display panel work, the light that luminescent layer issues in the top emitting OLED display panel can enter light through optical flat 20
In removing layer 2, and optical flat 20 is reflexed to through optics cambered surface 21, is shot out through optical flat 20.
In the present embodiment, by the way that a face on light removing layer is arranged to optics cambered surface, compared to light in the related technology
Removing layer is the scheme of planar structure, so that light removing layer can carry out the light path that emergent light under different exit directions is passed through
Different degrees of finishing, it may be assumed that tilt the light path reduction that the emergent light of outgoing passes through, the light path that the emergent light of vertical exit passes through increases
Add, that is to say, that the light removing layer can reduce the gap of the light path under different exit directions between each emergent light, so as to change
Kind color difference problem, and then improve user experience.
Preferably, optics cambered surface can be arc surface, to further decrease the light under different exit directions between each emergent light
The gap of journey so as to improve color difference problem, and then improves user experience.
It is described in detail, the colour cast of emergent light corresponding to the arc surface of different curvature radius is different, as shown in figure 4, when circle
When the radius of curvature of cambered surface is 250nm, can measuring the angle of emergence of emergent light by the optical analog arc surface, (this angle of emergence can
For the angle between emergent light and the normal direction of optical flat 20) when changing between 0~60 °, colour cast is less than or equal to 0.01, such as song
Shown in line N；When the radius of curvature of arc surface is 350nm, the angle of emergence of the emergent light colour cast when changing between 0~60 ° be less than or
Equal to 0.025, as shown in curve M；When light removing layer light removing layer is plate-like structure 1, it may be assumed that when the light-emitting surface of light removing layer
Radius of curvature when being infinite, the angle of emergence of the emergent light colour cast when changing between 0~60 ° is less than or equal to 0.035, such as curve L
It is shown.It follows that the radius of curvature of optics cambered surface 21 is smaller, the colour cast of emergent light is smaller.Certainly, the curvature of optics cambered surface 21
Radius is smaller, and technique is more complicated, and production cost also can be higher.Therefore, colour cast and cost, preferably optics cambered surface are reduced to reduce
21 radius of curvature is 250nm~350nm, it may be assumed that the radius of curvature of arc surface is 250nm~350nm.
The material of light removing layer 2 can be coining glue, may further be ultraviolet stamping glue.Ultraviolet stamping glue includes freely
Base solidifies prepolymer system and cationic curing prepolymer system two major classes, radically curing prepolymer system may include acrylic acid
Ester material etc., cationic curing prepolymer system may include epoxide and vinyl ether compound etc., herein no longer in detail
Description.
Disclosure example embodiment also provides a kind of production method of smooth removing layer, as shown in figure 5, the production method packet
It includes:
Step S110 forms light in a substrate 3 and takes out material film 4；
Step S120 takes out material film 4 to light and carries out Patternized technique, and to form light removing layer 2, this light removing layer can
For light removing layer 2 described in above-mentioned any one embodiment, in this not go into detail, wherein optics cambered surface 21 is towards far from substrate 3
Direction protrusion.
In the present embodiment, Patternized technique is carried out by taking out material film 4 to the light being formed in substrate 3, so that base
The light removing layer 2 with optics cambered surface is formed on bottom 3.Wherein, the optics cambered surface 21 of light removing layer 2 is on light removing layer far from base
The face at bottom 3, the optical flat 20 of light removing layer 2 are the face on light removing layer 2 close to substrate 3.
Since light removing layer 2 includes optics cambered surface 21, structure is taken out compared to flat light, different outgoing sides can be reduced
The gap of actual distance can then improve between downward each emergent light so as to reduce the gap of light path between each emergent light
The color difference problem of display panel, improves user experience.
The production method of the light removing layer provided with reference to the accompanying drawing disclosure embodiment is described in detail:
In step s 110, light is formed in a substrate 3 take out material film 4.
For example, substrate 3 can be loading plate, for production light removing layer 2 and support in the process light take out material
Film 4；It can also be luminescent panel, can be applied in display panel.
In the present embodiment, light takes out material film 4 and can be formed in substrate 3 by coating processes or depositing operation, such as Fig. 5
It is shown, certainly, other techniques can also be used, will not enumerate herein.
Wherein, light, which takes out material film 4, can have a high light transmittance and higher refractive index, translucency about 90% with
On, and refractive index n is about between 1.7~1.9, and Jie compared with low-refraction is entered to reduce light by the medium of high index
Loss when matter.
For example, being previously mentioned light removing layer 2 can be coining glue, that is to say, that light, which takes out material film 4, to be pressure
Glue is printed, this coining glue may include that heat cure imprints glue, thermoplastic coining glue or the ultraviolet stamping glue being previously mentioned etc., not another herein
One enumerates.Since coining glue needs to have good adhesiveness with substrate 3, the silicon or fluorine carbon in control coining glue material can be passed through
Class additive amount regulates and controls coining glue, so that the adhesiveness of coining glue meets requirement.
It should be noted that light, which takes out material film 4, is also possible to other materials, will not enumerate herein.
In the step s 120, material film 4 is taken out to light and carries out Patternized technique, to form light removing layer 2.Citing and
Speech, light take out material film 4 be coining glue when, referring herein to Patternized technique can be imprint process, that is to say, that can
Imprint process is carried out using 5 pairs of coining glue of impression block, to form light removing layer 2.
Specifically, as shown in figure 8, the impression block 5 in the present embodiment may include multiple spaced lug bosses 50, respectively
Lug boss 50 can be corresponding with the pixel region being previously mentioned.Wherein, each lug boss 50 has and the matched arc of optics cambered surface 21
Shape pattern 51 imprints light using the impression block 5 with this arc patterns 51 and takes out material film 4, to imprint out optics cambered surface
21。
It should be noted that material film 4 is taken out compressing light using impression block 5, to form the same of light removing layer 2
When, the part that light takes out in material film 4 in addition to light removing layer 2 is cut off with light removing layer 2 using impression block 5, just
It is removed from substrate 3 in light to be taken out to the part in material film 4 in addition to light removing layer 2.
Certainly, the Patternized technique being previously mentioned not only can be imprint process, or other techniques, such as etch
Technique etc..
Wherein, imprint process, after forming light removing layer 2, light removing layer are being carried out using 5 pairs of coining glue of impression block
2 production method, which may also include, carries out curing process to light removing layer 2.
For example, when imprinting glue is that heat cure imprints glue, heating process can be used, curing process is carried out to it；Work as pressure
When print glue is ultraviolet stamping glue, ultraviolet light irradiation process, which can be used, solidifies target pattern.
Disclosure example embodiment also provides a kind of display panel, which can be OLED display panel, but not
It is limited to this, can also is other display panels.And the display panel can be applied to computer, mobile phone, TV etc. and show in product, herein
Place is not enumerating.
In the present embodiment, display panel may include light removing layer 2 described in substrate 3 and aforementioned any embodiment, herein
No longer the specific structure of light removing layer 2 is described in detail.Wherein, substrate 3 may include illumination region 34；That is, the base
Bottom 3 can be used as the luminescent panel of display panel.And light removing layer 2 can be set to the side of illumination region 34, and deviate from light removing layer 2
The side of illumination region 34 is optics cambered surface 21.
In the present embodiment, by the way that the face for deviating from illumination region 34 on light removing layer 2 is arranged to optics cambered surface 21, so that light takes
The light path that layer 2 can pass through emergent light under different exit directions out carries out different degrees of finishing, to reduce different outgoing sides
The gap of light path between downward each emergent light, so as to improve color difference problem, and then improves user experience.
For example, this display panel can be top emitting OLED display panel, apply in light removing layer 2 in top emitting OLED
When in display panel, the optical flat 20 of this light removing layer 2 can be incidence surface, and the optics cambered surface 21 of light removing layer 2 can be for out
Smooth surface, that is to say, that when the work of top emitting OLED display panel, the light of luminescent layer sending in the top emitting OLED display panel
It can enter in light removing layer 2 through optical flat 20, and launch through optics cambered surface 21.
It should be noted that this display panel can be also top emitting OLED display panel, applies in light removing layer 2 and sent out the bottom of at
When penetrating in OLED display panel, it is also light-emitting surface that the optical flat 20 of this light removing layer 2, which is incidence surface,；And light removing layer 2
Optics cambered surface 21 can be reflecting surface, that is to say, that when the work of bottom emitting OLED display panel, the top emitting OLED display panel
The light that middle luminescent layer issues can enter in light removing layer 2 through optical flat 20, and reflex to optical flat 20 through optics cambered surface 21,
It is shot out through optical flat 20.
In one embodiment, the substrate being previously mentioned not only includes illumination region 34, may also include array substrate 31, pixel limit
Given layer 33 and sub-pixel 35；Wherein, pixel confining layer 33 can be set in array substrate 31, and be formed with picture in pixel confining layer 33
Plain region；And sub-pixel 35 can be set in pixel region, and between illumination region 34 and light removing layer 2.
It should be noted that planarization layer 32 is also provided between pixel confining layer 33 and array substrate 31, for changing
The flatness of kind array substrate 31, to facilitate in array substrate 31 formation of other film layers (such as: pixel confining layer 33).
It is described in detail, pixel confining layer 33 is set to side of the planarization layer 32 far from array substrate 31, and can have multiple
Spaced pixel region.And light removing layer 2 and illumination region 34 can be set in pixel region, wherein this illumination region 34 can be
Organic illuminating element may include the first electrode being stacked, organic luminous layer and second electrode, no longer retouch in detail herein
It states.And sub-pixel 35 is set in pixel region, which may include red sub-pixel, green sub-pixels and the sub- picture of blue
Element, for passing through light identical with 35 color of sub-pixel.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by appended
Claim is pointed out.
Claims (11)
1. a kind of smooth removing layer characterized by comprising
Optical flat；
Optics cambered surface, it is opposite with the optical flat, and the optical arc is protruded away from the direction of the optical flat.
2. smooth removing layer according to claim 1, which is characterized in that the optics cambered surface is arc surface.
3. smooth removing layer according to claim 2, which is characterized in that the radius of curvature of the arc surface be 250nm~
350nm。
4. a kind of production method of smooth removing layer characterized by comprising
Light is formed in a substrate takes out material film；
Material film is taken out to the light and carries out Patternized technique, is taken with forming light described in any one of claims 1 to 3
Layer out, the optical arc face away from the direction protrusion of the substrate.
5. the production method of smooth removing layer according to claim 4, which is characterized in that it is pressure that the light, which takes out material film,
Print glue.
6. the production method of smooth removing layer according to claim 5, which is characterized in that the light take out material film into
Row Patternized technique, to form light removing layer, comprising:
Imprint process is carried out to the coining glue using impression block, to form the smooth removing layer.
7. the production method of smooth removing layer according to claim 6, which is characterized in that use impression block to institute described
It states coining glue and carries out imprint process, to be formed after light removing layer, further includes:
Curing process is carried out to the smooth removing layer.
8. a kind of display panel characterized by comprising
Substrate, the substrate include illumination region；And
Light removing layer described in any one of claims 1 to 3, the smooth removing layer are set to the side of the illumination region, and institute
It states and deviates from the side of the illumination region on light removing layer for the optics cambered surface.
9. display panel according to claim 8, which is characterized in that the substrate further include:
Array substrate；
Pixel confining layer is set in the array substrate, and is formed with pixel region in the pixel confining layer；
Sub-pixel is set in the pixel region, and between the illumination region and the smooth removing layer.
10. display panel according to claim 9, which is characterized in that the illumination region is set to the smooth removing layer
In the pixel region.
11. display panel according to claim 8, which is characterized in that the optical flat is entering for the smooth removing layer
Smooth surface, the optics cambered surface are the light-emitting surface of the smooth removing layer.
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| CN201910107907.0A CN109841753A (en) | 2019-02-02 | 2019-02-02 | Light removing layer and preparation method thereof, display panel |
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Application publication date: 20190604 |