CN206322696U - Organic LED display panel, display device and mask plate - Google Patents
Organic LED display panel, display device and mask plate Download PDFInfo
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- CN206322696U CN206322696U CN201621169593.5U CN201621169593U CN206322696U CN 206322696 U CN206322696 U CN 206322696U CN 201621169593 U CN201621169593 U CN 201621169593U CN 206322696 U CN206322696 U CN 206322696U
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Abstract
A kind of organic LED display panel, display device and mask plate.The organic LED display panel, including bending section, the protrusion side of bending section is light emission side, bending section includes underlay substrate and the multiple Organic Light Emitting Diodes being arranged on underlay substrate, Organic Light Emitting Diode includes multiple layers, multiple layers include luminescent layer, luminescent layer has first surface, in bending section, first surface is opposite with the bending direction of underlay substrate, or, in bending section, first surface curvature identical and first surface with the bending direction of underlay substrate is more than the curvature of underlay substrate.Organic Light Emitting Diode in the organic LED display panel lighting angle when luminous disperses, and can improve the visual angle of organic LED display panel, improve display quality.
Description
Technical field
The utility model at least embodiment is related to a kind of organic LED display panel, display device and mask
Plate.
Background technology
Using organic LED display panel (Organic Light-Emitting Diode, OLED) display
Device, because its preparation technology is simple, fast response time, with thin, light, wide viewing angle, actively luminous, luminosity is high, luminous face
Color continuously adjustabe, low in energy consumption, low cost and the advantages of be easily achieved Flexible Displays, therefore have broad application prospects.
Utility model content
An at least embodiment of the present utility model is related to a kind of organic LED display panel, display device and mask
Plate.Organic Light Emitting Diode in the organic LED display panel can form scattered light when luminous so that luminous
Angular separation, can improve the visual angle of organic LED display panel, improve display quality.
At least one embodiment of the present utility model provides a kind of organic LED display panel, including bending
Portion, the protrusion side of the bending section is light emission side, and the bending section includes underlay substrate and is arranged on the underlay substrate
Multiple Organic Light Emitting Diodes, wherein, the Organic Light Emitting Diode include multiple layers, the multiple layer include luminescent layer,
The luminescent layer has first surface, first surface described in the bending section and the underlay substrate bending direction on the contrary,
Or, first surface described in the bending section is identical with the bending direction of the underlay substrate and song of the first surface
Rate is more than the curvature of the underlay substrate.
At least one embodiment of the present utility model additionally provides a kind of display device, including embodiment of the present utility model
Any organic LED display panel provided.
At least one embodiment of the present utility model additionally provides a kind of making side of organic LED display panel
Method, including：
The of Organic Light Emitting Diode is formed on the underlay substrate of the pars convoluta to be curved of organic LED display panel
One layer, surface of the first layer away from the underlay substrate has curved surface；
The subsequent film of the Organic Light Emitting Diode is formed on the first layer, and the subsequent film has the song
Face, the subsequent film includes luminescent layer；
The organic LED display panel is bent to form bending section, the protrusion side of the bending section is light extraction
Side, has first surface in luminescent layer described in the bending section, in first surface described in the bending section and the underlay substrate
Bending direction on the contrary, or, first surface described in the bending section it is identical with the bending direction of the underlay substrate and
The curvature of the first surface is more than the curvature of the underlay substrate.
At least one embodiment of the present utility model additionally provides a kind of mask plate, including：Part I and Part II.
Part II is arranged on the periphery of Part I；Part II is included on the direction from close to Part I to away from Part I
The multiple subdivisions arranged successively, and from close to Part I, to the direction away from Part I, the light of multiple subdivisions is passed through
Rate is sequentially reduced, and light transmission rate of the light transmission rate more than each subdivision of Part I, or, by close to described first
Divide to the direction away from the Part I, the light transmission rate of the multiple subdivision increases successively, and the Part I
Light transmission rate be less than each subdivision light transmission rate.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, it will make simple to the accompanying drawing of embodiment below
Introduce on ground, it should be apparent that, drawings in the following description merely relate to some embodiments of the present utility model, rather than to this practicality
New limitation.
Fig. 1 is a kind of visual angle schematic diagram of organic LED display panel bending section；
Fig. 2 is a kind of organic LED display panel structural representation；
A kind of visual angle for organic LED display panel bending section that Fig. 3 a provide for the embodiment of the utility model one
Schematic diagram；
A kind of organic LED display panel part-structure signal that Fig. 3 b provide for the embodiment of the utility model one
Figure；
Fig. 3 c show for another organic LED display panel part-structure that the embodiment of the utility model one is provided
It is intended to；
Fig. 3 d show for another organic LED display panel part-structure that the embodiment of the utility model one is provided
It is intended to；
Another organic LED display panel bending section that Fig. 4 a provide for the embodiment of the utility model one is regarded
Angle schematic diagram；
Fig. 4 b are the organic LED display panel bending section shown in Fig. 4 a and Organic Light Emitting Diode thereon
Bending direction and degree of crook schematic diagram；
A kind of organic LED display panel structural representation that Fig. 5 provides for another embodiment of the utility model；
A kind of organic LED display panel preparation method signal that Fig. 6 provides for the embodiment of the utility model one
Figure；
Fig. 7 a are a kind of first electrode structural representation；
A kind of mask plate schematic diagram that Fig. 7 b provide for the embodiment of the utility model one；
Fig. 8 a are a kind of first electrode formation structural representation；
Fig. 8 b for along along Fig. 8 a A-B to first electrode structure schematic cross-sectional view；
A kind of first electrode formation structural representation that Fig. 9 a provide for the embodiment of the utility model one；
The C-D along Fig. 9 a that Fig. 9 b are provided for the embodiment of the utility model one to first electrode structure sectional view；
A kind of flatness layer upper surface (remote underlay substrate of flatness layer that Figure 10 provides for another embodiment of the utility model
Surface) the second curved surface formation structural representation.
Reference：
01- underlay substrates；02- first electrodes；05- flatness layers；06- interlayer insulating films；07- gate insulation layers；08- storage electricity
Hold；The first electrode of 081- storage capacitances；The second electrode of 082- storage capacitances；09- pixel defining layers；10- supporting layers；12-
Thin film transistor (TFT)；121- source electrodes；122- drains；123- grids；15- active layers；The source contact regions of 151- active layers；152-
The drain contact areas of active layer；100- substrates；101- underlay substrates；102- first electrodes；103- functional layers；The electricity of 104- second
Pole；105- flatness layers；106- interlayer insulating films；107- gate insulation layers；108- storage capacitances；First electricity of 1081- storage capacitances
Pole；The second electrode of 1082- storage capacitances；109- pixel defining layers；110- supporting layers；112- thin film transistor (TFT)s；1121- sources
Pole；1122- drains；1123- grids；115- active layers；The source contact regions of 1151- active layers；The drain electrode of 1152- active layers
Contact area；201 first surfaces；The curved surfaces of 202- second；301- bending sections；302- un-flexed portion (planar portions)；310- first
Point；320- Part II；The subdivision of 321- Part II；The subdivision of 322- Part II；323- second is spaced；330-
One interval；340- Part III；1030- luminescent layers；1031- hole injection layers；1032- hole transmission layers；1033- electric transmissions
Layer；1034- electron injecting layers；234- Organic Light Emitting Diodes；Between two layers of the arbitrary neighborhood of 2341- Organic Light Emitting Diodes
Interface；The surface of the remote underlay substrate of 2342- Organic Light Emitting Diodes；The close substrate base of 2343- Organic Light Emitting Diodes
The surface of plate；300- mask plates.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
The accompanying drawing of type embodiment, the technical scheme to the utility model embodiment is clearly and completely described.Obviously, it is described
Embodiment is a part of embodiment of the present utility model, rather than whole embodiments.Based on described of the present utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained on the premise of without creative work, all belongs to
The scope protected in the utility model.
Unless otherwise defined, the technical term or scientific terminology that the disclosure is used should be the utility model art
The ordinary meaning that the interior personage with general technical ability is understood." first ", " second " and the similar word used in the disclosure
Language is not offered as any order, quantity or importance, and is used only to distinguish different parts.Equally, " comprising " or
The element or object that the similar word such as person's "comprising" means to occur before the word cover the member for appearing in the word presented hereinafter
Part or object and its equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " is not
Physics or machinery connection is defined in, but electrical connection can be included, it is either directly or indirect.
" on ", " under ", "left", "right" etc. are only used for representing relative position relation, after the absolute position for being described object changes, then should
Relative position relation may also correspondingly change.
Generally, in order to improve display effect, it can be handled in the light emission side of organic LED display panel so that
The wide part that Organic Light Emitting Diode is sent is launched with 90 degree of angle straight line, and thus also brings Organic Light Emitting Diode
Bending section on display panel can produce the problem of visual angle (viewing angle) is bad.As shown in figure 1, due to the bending section of display panel
On the wide part that sends of Organic Light Emitting Diode launched with 90 degree of angle straight line, so as to when causing the human eye to watch, receive
Light to bending section is less, and edge is dimmed, influences display effect.Also, the product can also occur equally in actual volume production
The problem of.
Fig. 2 shows a kind of organic LED display panel structure, and organic LED display panel includes lining
Substrate 01, the functional unit being arranged on underlay substrate 01, functional unit include thin film transistor (TFT) 12 and and film crystal
The storage capacitance 08 that pipe 12 is electrically connected.For example, underlay substrate 01 can be polyimides, thin film transistor (TFT) 12 can be bottom gate type
Structure can also be top-gate type structure.
As shown in Fig. 2 when thin film transistor (TFT) 12 is top-gate type structure, in the grid 123 of thin film transistor (TFT) 12 and active
Gate insulation layer 07 is formed between layer 15, meanwhile, gate insulation layer 07 may be located on the Top electrode 081 and lower electricity of storage capacitance 08
Using the dielectric layer as storage capacitance 08 between pole 082.Source electrode 121 and drain electrode 122 respectively be located at active layer 15 both sides, and with
Active layer 15 is electrically connected.When active layer uses non-crystalline silicon, active layer 15 can shape with the contact area 151,152 of source electrode and drain electrode
Into n+α-Si are to form Ohmic contact.It should be noted that the material of active layer is not limited to non-crystalline silicon.In addition, brilliant in film
Interlayer insulating film 06 is formed between the grid 123 of body pipe 12 and drain electrode 122, the material of interlayer insulating film 06 can be silicon nitride
Or silica, but not limited to this.
Above-mentioned organic LED display panel structure may also include the flatness layer 05 being arranged on interlayer insulating film 06,
The material of flatness layer 05 can be elastic organic material, such as polyimides.Organic LED display panel structure is also wrapped
Include the first electrode 02 and pixel defining layer 09 for the Organic Light Emitting Diode being arranged on flatness layer 05, the quilt of pixel defining layer 09
Configure to limit subpixel area.Organic Light Emitting Diode may include multiple layers, and first electrode 02 can be Organic Light Emitting Diode
One layer, other layers of not shown Organic Light Emitting Diode of the formation on first electrode 02 here.Organic Light Emitting Diode
Display panel structure may also include supporting layer 10.Organic light-emitting diodes in general organic LED display panel structure
The first electrode 02 of pipe relative to underlay substrate 01 be it is flat (organic LED display panel bending after first electrode 02
May have identical bending direction and curvature with the underlay substrate of bending section), in first electrode 02 relative to underlay substrate 01
It is that organic LED display panel bending section under flat condition can produce limitation to visual angle.Due to organic in bending section
The wide part that light emitting diode is sent is launched with 90 degree of angle straight line, so as to when causing the human eye to watch, receive bending section
Light it is less, produce edge become dim phenomenon, influence display effect.
At least one embodiment of the present utility model provides a kind of organic LED display panel, including bending
Portion, the protrusion side of bending section is light emission side, and the protrusion side of bending section for example refers to that side that bending section arches up, relative to curved
For that sunk side of pars convoluta.Bending section includes underlay substrate and the multiple organic light emissions two being arranged on underlay substrate
Pole pipe, Organic Light Emitting Diode includes multiple layers, and multiple layers include luminescent layer, and luminescent layer has first surface, in bending section the
The bending direction of one curved surface and underlay substrate on the contrary, or, in bending section, first surface is identical with the bending direction of underlay substrate
And the curvature of first surface is more than the curvature of underlay substrate.The first surface can make Organic Light Emitting Diode (for example, one
Organic Light Emitting Diode can correspond to a sub-pixel) light that sends is no longer most of with 90 degree of angle straight line transmitting, but to
All angles are launched, and form scattered light so that lighting angle disperses, so as to watch the organic light emission two in different angles
Sub-pixel belonging to pole pipe, can improve or avoid edge from becoming dim phenomenon, so as to improve visual angle, improve display quality.
At least one embodiment of the present utility model additionally provides a kind of making side of organic LED display panel
Method, including：The of Organic Light Emitting Diode is formed on the underlay substrate of the pars convoluta to be curved of organic LED display panel
One layer, surface of the first layer away from underlay substrate has curved surface；The subsequent film of Organic Light Emitting Diode is formed on the first layer,
Subsequent film has curved surface, and subsequent film includes luminescent layer；Organic LED display panel is bent to form bending section, it is curved
The protrusion side of pars convoluta is light emission side, and in bending section, luminescent layer has first surface, first surface and underlay substrate in bending section
Bending direction on the contrary, or, the first surface curvature identical and first surface with the bending direction of underlay substrate in bending section
More than the curvature of underlay substrate.It is thus possible to so that the organic LED display panel lighting angle made disperses, can be
Different angles are watched, so as to improve visual angle.Organic LED display panel is flat condition, You Jifa before bending
The curved surface that optical diode has would generally be different from the first surface that Organic Light Emitting Diode after bending has, and curvature can slightly become
Change.
The utility model at least embodiment also provides a kind of mask plate, including：Part I and Part II.Second
Divide the periphery for being arranged on Part I.Part II includes arranging successively on the direction from close to Part I to away from Part I
Multiple subdivisions of cloth, from, to the direction away from Part I, the light transmission rate of multiple subdivisions subtracts successively close to Part I
It is small, and light transmission rate of the light transmission rate more than each subdivision of Part I, or, from close Part I to away from first
Partial direction, the light transmission rate of multiple subdivisions increases successively, and the light transmission rate of Part I is less than each subdivision
Light transmission rate.Different illumination can be formed through the light of the mask plate, therefore, the upper surface of the film layer made by the mask plate
Bending/curved surface/shape can be formed, for example, forms concave or convex shape.
It is explained below by way of several embodiments.
Embodiment one
A kind of organic LED display panel is present embodiments provided, as shown in Figure 3 a.Organic Light Emitting Diode shows
Show that panel includes bending section 301, the protrusion side of bending section 301 is light emission side.As shown in Figure 3 b, bending section 301 includes substrate base
Plate 101 and the multiple Organic Light Emitting Diodes 234 being arranged on underlay substrate 101, Fig. 3 b show in bending section 301 one
Organic Light Emitting Diode 234.The Organic Light Emitting Diode 234 includes multiple layers, and the arbitrary neighborhood of Organic Light Emitting Diode
The surface 2342 of the remote underlay substrate 101 at interface 2341 and Organic Light Emitting Diode between two layers has first surface 201.
The first surface 201 can make Organic Light Emitting Diode launch the scattered light of different angles so that lighting angle disperses, from
And the sub-pixel belonging to the Organic Light Emitting Diode can be watched in different angles, so as to improve visual angle.
It is the close to the layer of underlay substrate 101 for example, as shown in Figure 3 b, be arranged in multiple layers on underlay substrate 101
One electrode 102, the layer away from underlay substrate 101 is second electrode 104, and Organic Light Emitting Diode also includes being arranged on first electrode
Functional layer 103 between 102 and second electrode 104.Interface between two layers of the arbitrary neighborhood of Organic Light Emitting Diode has the
Interface between one curved surface 201, i.e. first electrode 102 and functional layer 103, between functional layer 103 and second electrode 104 has the
One curved surface 201.When functional layer 103 includes multiple layers, the interface in functional layer between two layers of arbitrary neighborhood has first surface
201。
For example, the functional layer 103 of Organic Light Emitting Diode at least includes luminescent layer 1030.In one example, such as Fig. 3 c institutes
Show, the functional layer 103 of Organic Light Emitting Diode includes luminescent layer 1030.The functional layer 103 of Organic Light Emitting Diode except including
Outside luminescent layer 1030, may also include hole transmission layer, hole injection layer, hole blocking layer, electron transfer layer, electron injecting layer,
At least one of electronic barrier layer.In another example, as shown in Figure 3 d, functional layer 103 also includes hole injection layer 1031, sky
Cave transport layer 1032, electron transfer layer 1033, electron injecting layer 1034.Hole blocking layer and electronic barrier layer do not show in figure
Go out, it sets can be found in and is commonly designed.For example, hole blocking layer may be provided between electron transfer layer and luminescent layer, electronics resistance
Barrier may be provided between hole transmission layer and luminescent layer, but not limited to this.The material of each layer of Organic Light Emitting Diode can
Reference is commonly designed.
As shown in Figure 3 d, the interface in each functional layer between two layers of arbitrary neighborhood has first surface 201, because of first electrode
The surface of 102 remote underlay substrate 101 has first surface 201, and the subsequent film formed in first electrode 102 continues
The pattern on surface of the first electrode away from underlay substrate 101.So as between two layers of the arbitrary neighborhood of so that Organic Light Emitting Diode
Interface and Organic Light Emitting Diode remote underlay substrate surface (the remote underlay substrate 101 of Organic Light Emitting Diode
The upper surface of layer) there is first surface 201.
As shown in Fig. 3 b-3d, in Organic Light Emitting Diode, interface between two layers of arbitrary neighborhood and away from underlay substrate
The bending direction on the surface of 101 layer is identical, and curvature is identical.
It should be noted that in Organic Light Emitting Diode, there is luminescent layer 1030 first surface 201 may be such that light emitting anger
Degree is scattered.Luminescent layer 1030 refers to the surface of the close light emission side of luminescent layer 1030 with first surface 201 and away from light emission side
Surface be respectively provided with first surface 201, and two surfaces are bent towards same direction.That is, a certain layer refers to this with curved surface
The surface of the close light emission side of layer and the surface of remote light emission side are respectively provided with curved surface, and two surfaces are curved towards same direction
It is bent.In one example, the layer formed after luminescent layer of light emitting diode has first surface 201.In another example, have
Each layer of machine light emitting diode is respectively provided with first surface 201.As shown on the right side of Fig. 3 a, be arranged on bending section 301 has the
The light that the Organic Light Emitting Diode of one curved surface is sent is launched towards all directions, forms scattered light, when human eye is watched, receives
Light to bending section increases, and improves visual angle, realizes preferable display effect, it is therefore prevented that edge becomes the generation of dim phenomenon.
For example, in the present embodiment, bending direction is identical or is conversely for light emission side.The bending side of two structures
To only identical and opposite two kinds of situations.If the bending direction of a structure and the bending direction of another structure are towards light extraction
Side (or light direction), then two structural bending directions are identical.If the bending direction of a structure is towards light emission side, and another
The bending direction of individual structure deviates from light emission side, then two structural bendings are in opposite direction.One warp architecture towards light emission side example
Such as refer to that sunk side of the structure towards light emission side, it is just right with light emission side to be not required for the warp architecture herein, can
To deviate certain angle.As shown in Figure 3 a, the Organic Light Emitting Diode with first surface on bending section 301 is directed towards light extraction
Side, and the underlay substrate of bending section is dorsad light emission side.Said structure for example refers to layer or curved surface.
For example, underlay substrate 101 can by polyimides, makrolon, polyacrylate, PEI, polyether sulfone,
One or more materials in polyethylene terephthalate and PEN are made.First electrode 102 can
Formed by the transparent conductive material with high work function, such as indium zinc oxide, tin indium oxide, indium tin zinc oxide, zinc oxide or oxidation
Tin is formed.Second electrode 104 can be formed by the material of high conductivity and low work function.For example, second electrode 104 can use metal
Material is made.It is above the material of each layer enumerated, but the present embodiment is to the material of each layer and is not construed as limiting.For example, the first electricity
Pole 102 is anode, and second electrode 104 is negative electrode.The electronics that the hole and negative electrode that anode is provided are provided is tied at luminescent layer 1030
Close with luminous.For example, the material of suitable each layer may be selected, so as to form the display panel of flexibility.
Illustrated in Fig. 3 a so that the Organic Light Emitting Diode with first surface 201 is arranged on bending section as an example.Need
Illustrate, the Organic Light Emitting Diode with first surface 201 can also be arranged on un-flexed portion 302, or, in un-flexed
Portion 302 and bending section 301 are respectively provided with the Organic Light Emitting Diode with first surface 201.The present embodiment is not construed as limiting to this.Figure
Bending section 301 and un-flexed portion 302 in 3a are structure as a whole, and bending section 301 is obtained through bending.For example, bending section is organic
At least a portion of LED display panel close to its edge.For example, it may be organic LED display panel is leaned on
At least side at its nearly edge has warp architecture, but not limited to this.
For example, as shown in Figure 3 a, the bending side of the first surface 201 of the Organic Light Emitting Diode on bending section 301
To opposite with the bending direction of bending section 301.It should be noted that as shown in fig. 4 a, the organic light emission on bending section 301
The bending direction of the first surface 201 of diode can also be identical with the bending direction of bending section 301.In this case, bending section
The curvature of the first surface 201 of the curvature of 301 (underlay substrates 101) and the Organic Light Emitting Diode on bending section 301 is not
Together, for example, in order that more light enter human eye, the Organic Light Emitting Diode being located on bending section 301 can be caused
The curvature of first surface 201 is more than the curvature of bending section 301.As shown in Figure 4 b, the hair with first surface on bending section 301
Photosphere 1030 is dorsad light emission side, and the underlay substrate of bending section is also dorsad light emission side.With bending section 301 in Fig. 4 b
The luminescent layer 1030 of upper Organic Light Emitting Diode 234 is illustrated exemplified by having first surface.Bending section and with first surface
Organic Light Emitting Diode bending direction identical in the case of, the setting of each layer of Organic Light Emitting Diode can refer to bending
Portion is opposite with the bending direction with the Organic Light Emitting Diode of first surface, will not be repeated here.
Embodiment two
A kind of organic LED display panel is present embodiments provided, the Organic Light Emitting Diode is illustrated in figure 5
The structure of display panel, including underlay substrate 101, the functional unit that is arranged on underlay substrate 101, functional unit include film
Transistor 112 and the storage capacitance 108 electrically connected with thin film transistor (TFT) 112.Active layer 115 is formed on underlay substrate 101,
Active layer 115 includes channel region, the source contact regions 1151 electrically connected with source electrode and the contact area electrically connected with drain electrode
1152.The source contact regions 1151 of active layer 115 and drain contact areas 1152 are electric with source electrode 1121 and drain electrode 1122 respectively
Connection.For example, active layer 115 can use non-crystalline silicon (α-Si), source contact regions 1151 and drain contact areas 1152 can be n+α-Si, but it is not limited to this.For example, active layer 115 can also use other materials, such as oxide semiconductor.Film crystal
In the case that pipe 112 is opened, the electric current of source electrode can pass to OLED anode by drain electrode.
Thin film transistor (TFT) 112 can be that bottom-gate type configuration can also be top-gate type structure, as shown in figure 5, working as film crystal
When pipe 112 is top-gate type structure, gate insulation layer is formed between the grid 1123 and active layer 115 of thin film transistor (TFT) 112
107, meanwhile, gate insulation layer 107 may be located between the Top electrode 1081 of storage capacitance 108 and bottom electrode 1082 using as depositing
Storing up electricity holds 108 dielectric layer.In addition, being formed with layer insulation between the grid 1123 of thin film transistor (TFT) 112 and drain electrode 1122
Layer 106.For example, the material of gate insulator 107 can be the combination of silicon nitride, silica or both, but not limited to this.Example
Such as, interlayer insulating film 106 can also be formed, the present embodiment by being formed with the identical material of gate insulator 107 by other materials
This is not construed as limiting.
For example, the surface 2343 of the close underlay substrate 101 of Organic Light Emitting Diode has first surface 201.So as to have
The layer (such as anode layer) of the close underlay substrate 101 of machine light emitting diode has first surface 201.
For example, the organic LED display panel, also including being arranged on underlay substrate 101 and Organic Light Emitting Diode
Close underlay substrate 101 layer between flatness layer 105, the layer of the close underlay substrate 101 of Organic Light Emitting Diode with it is flat
Smooth layer 105 is contacted, and the surface of the remote underlay substrate 101 of flatness layer 105 has the second curved surface 202, the bending of the second curved surface 202
Direction is identical with the bending direction of first surface 201, and curvature is identical.Second curved surface 202 is overlapped with first surface 201.Example
Such as, the material of flatness layer 105 can include polyimides, but not limited to this.
The organic LED display panel may also include the pixel defining layer 109 that is arranged on flatness layer 105 and
The first electrode 102 of Organic Light Emitting Diode, pixel defining layer 109 is configured to limit subpixel area.First electrode 102 is
One layer of Organic Light Emitting Diode, other layer of Organic Light Emitting Diode is not shown here.Organic LED display panel
It may also include the supporting layer 110 being arranged in pixel defining layer 109.
The upper and lower surface of first electrode 102 in the organic LED display panel of the present embodiment is bent
Face, and the bending direction on two surfaces is identical, curvature is identical, so that the subsequent film of Organic Light Emitting Diode also shape
It is the structure of curved surface into upper and lower surface, may be such that the angular that Organic Light Emitting Diode is sent is disperseed, so as to improve
Visual angle.
For example, source electrode 1121 in thin film transistor (TFT) 112, drain electrode 1122, the material of grid 1123 can include molybdenum, titanium,
One or more combinations in aluminium, copper etc., but it is not limited to this.
Embodiment three
As shown in fig. 6, the present embodiment provides a kind of preparation method of organic LED display panel, including following step
Suddenly.
S1：Organic Light Emitting Diode is formed on the underlay substrate of the pars convoluta to be curved of organic LED display panel
First layer, surface of the first layer away from underlay substrate has curved surface；
S2：The subsequent film of Organic Light Emitting Diode is formed on the first layer, and subsequent film has curved surface, subsequent film bag
Include luminescent layer；
S3：Organic LED display panel is bent to form bending section, the protrusion side of bending section is light emission side, curved
Pars convoluta luminescent layer has first surface, in bending section first surface and underlay substrate bending direction on the contrary, or, in bending section
First surface curvature identical and first surface with the bending direction of underlay substrate is more than the curvature of underlay substrate.
So as to which the light that Organic Light Emitting Diode is sent is no longer most of to launch light with 90 degree of angle straight line, but launches
Go out the scattered light of different angles, when human eye is watched, the light for receiving bending section increases, and realizes preferable display effect, prevent
Only edge becomes the generation of dim phenomenon.
For example, as shown in Figure 3 a, the Organic Light Emitting Diode with first surface is arranged on bending section 301.Certainly, have
The Organic Light Emitting Diode of first surface can also be arranged on un-flexed portion 302, or, bending section 301 and un-flexed portion 302 are all
It is provided with the Organic Light Emitting Diode with first surface.The present embodiment is not construed as limiting to this.
For example, as shown in Figure 3 a, in an example, the bending direction of bending section and the organic light emission two on bending section
The bending direction of the first surface of pole pipe is different, and for example bending direction is opposite.
For example, in the preparation method of organic LED display panel, the first layer of Organic Light Emitting Diode it is close
The surface of underlay substrate has first surface.For example, can be arranged under Organic Light Emitting Diode and organic light emission
The upper surface of the layer of diode contact forms curved surface, with the lower surface of the first layer that causes Organic Light Emitting Diode and upper surface
Also there is curved surface.
For example, as shown in figure 5, in an example, the preparation method of organic LED display panel is additionally included in lining
Flatness layer, the close lining of Organic Light Emitting Diode are formed between the layer of the close underlay substrate of substrate and Organic Light Emitting Diode
The layer of substrate is contacted with flatness layer, and the surface of the remote underlay substrate of flatness layer has the second curved surface, the bending of the second curved surface
Direction is identical with the bending direction of first surface, and curvature is identical.So that surface of the flatness layer away from underlay substrate with
The surface of the close underlay substrate of first layer is preferably fitted in Organic Light Emitting Diode, first layer in Organic Light Emitting Diode
Surface close to underlay substrate has first surface.First surface can be overlapped with the second curved surface.The remote underlay substrate of flatness layer
Surface on formed Organic Light Emitting Diode first layer, surface of the first layer away from underlay substrate has first surface, first
Curved surface can be identical with the bending direction of the second curved surface, and curvature is identical.Therefore, Organic Light Emitting Diode can launch different angles
Scattered light, can improve visual angle.Method is simple for example offer.
For example, masstone mask plate shape can be used into the flatness layer with the second curved surface.
Example IV
Fig. 7 a are a kind of first electrode structural representation, a kind of mask plate schematic diagram that Fig. 7 b provide for the present embodiment.Such as
Shown in Fig. 7 b, the mask plate 300 includes：Part I 310 and Part II 320.Part II 320 is arranged on Part I
310 periphery, and it is provided between Part I 310 first interval 330.Part II 320 is included from close to Part I
310 to multiple subdivisions 321,322 for arranging successively, two neighboring subdivision 321,322 on the direction away from Part I 310
Between have second interval 323, and from close to Part I 310 to away from Part I 310 direction, multiple subdivisions 321,
322 light transmission rate is sequentially reduced, and light transmission rate of the light transmission rate more than each subdivision 321,322 of Part I 310.
Illustrated in Fig. 7 b so that Part II 320 includes two subdivisions 321,322 as an example, the subdivision that Part II 320 includes
Quantity be not limited to shown in figure.So as to which the curved surface that upper surface is spill can be formed.
For example, the area of Part I 310 is more than the area of each subdivision 321,322 of Part II 320.For example, the
The shape of a part 310 includes any of polygon, circle.
For example, the area at the first interval 330 is more than the area at each second interval 323.
For example, along from being spaced 323 area phase to the direction away from Part I 310, each second close to Part I 310
Deng or be sequentially reduced, i.e., at least one interval is included in Part II 320, and each spacer area is equal or is sequentially reduced.
For example, in an example, the light transmission rate of Part I 310 is maximum, each subdivision 321- of Part II 320
322 light transmission rate close to Part I 310 to away from Part I 310 from being sequentially reduced, and first is spaced between 330 and second
Every 323 light transmission rates be 0% (light tight).
For example, the light transmission rate of Part I 310 is 80%~90%, the light of the subdivision 321 of Part II 320 is passed through
Rate is 70%~80%, and the light transmission rate of the subdivision 322 of Part II 320 is the 60%~70%, and first interval 330 and the
The light transmission rate at two intervals 323 is 0% (light tight).
Have above to have between Part II 320 and Part I 310 between first interval, two neighboring subdivision
Illustrated exemplified by second interval, but it is also possible to be not provided with the first interval and/or the second interval, so that, Part I and second
Part is adjacent, and the two neighboring subdivision in Part II is adjacent, from Part I 310 to the direction of Part II 320
On, the light transmission rate of Part I and each subdivision is sequentially reduced.Or, it can also adjust between the first interval and second
Every light transmission rate so that on from Part I 310 to the direction of Part II 320, light transmission rate is sequentially reduced.For example, one
In individual example, from Part I 310 through on the first interval 330 to direction of Part II 320, light transmission rate is sequentially reduced.That is,
The interval of Part I 310, first 330, the light transmission rate of Part II 320 are sequentially reduced.Further, in Part II 320,
On direction from close to Part I 310 to away from Part I 310, light transmission rate is sequentially reduced.For example, subdivision 321,
Two intervals 323, the light transmission rate of subdivision 322 are sequentially reduced.Further, the interval of Part I 310, first 330, subdivision
321st, the second interval 323, the light transmission rate of subdivision 322 are sequentially reduced.So as to available for the upper of making curved surface/concave
Surface.For example, available for formed upper surface be concave flatness layer.
For example, in an example, Part II 320 is located at the side of Part I 310, mask plate also includes and second
Divide 320 Part III 340 with identical structure and arrangement, Part III 340 and Part II 320 are misaligned.As schemed
Shown in 7b, Part III 340 has identical structure and arrangement with Part II 320, and this example is included with Part III 340
In case of being distributed on three directions in addition to Part II 320, certainly, the quantity of Part III 340 is not limited in figure
It is shown, can also be other quantity.For example, Part II 320 can also be set around Part I 310, closing structure is formed.
For example, multiple concentric annular structures can be formed around Part I from inside to outside, for example, donut can be formed, it is many with one heart
Side shape ring etc..
When flatness layer 105 is using photoresist material, any mask plate provided using the present embodiment through overexposure, is shown
Movie queen, can form curved-surface structure in the upper surface of flatness layer 105.On this basis, organic hair with first curvature can be prepared
Optical diode.
Mask plate listed above can form the layer with concave.Also, according to process requirements, can freely it adjust
Part I 310, the width at the interval 323 of the interval of Part II 320, first 330 and second, the concave shape needed for formation process.
For example, it is also possible to be designed by mask plate, the layer to form convex shape.In another example, by close to the
A part 310 is to the direction away from Part I 310, and the light transmission rate of multiple subdivisions can increase successively, and Part I
Light transmission rate be less than each subdivision light transmission rate.So as to which the curved surface that upper surface is convex can be formed.For example, available for shape
Into the flatness layer that upper surface is convex shape.For example, according to process requirements, can freely adjust Part I 310, Part II
320th, the width at the first interval 330 and the second interval 323, the convex-shaped needed for formation process.
The system for the organic LED display panel that any mask plate that the present embodiment is provided can be used in embodiment three
Make.And then, the organic LED display panel structure as described in embodiment one or two can be formed.
Embodiment five
Fig. 8 a be a kind of first electrode formation structural representation, Fig. 8 b for along along Fig. 8 a A-B to first electrode structure cut open
View.Generally, the structure of first electrode 102 as shown in Figure 8 a is formed on flatness layer 105, the flatness layer 105 formed here
And first electrode 102 is flat structure, in the state of this flat structures, organic LED display panel
Bending section can produce limitation to visual angle, and the wide part sent due to the Organic Light Emitting Diode of the formation in bending section is with 90 degree
The transmitting of angle straight line so that when causing the human eye to watch, the light for receiving bending section is less, influence display effect, produce side
Edge becomes dim phenomenon.
A kind of first electrode formation structural representation that Fig. 9 a provide for the present embodiment, the edge that Fig. 9 b provide for the present embodiment
In Fig. 9 a C-D to first electrode structure sectional view.As illustrated in fig. 9, appointing that example IV is provided is passed through on flatness layer 105
The mask plate of one layer to form concave shape forms the second curved surface on its surface (upper surface) away from underlay substrate, then
First electrode 102 is formed on second curved surface, first electrode 102 is formd and the second song on the surface close to flatness layer 105
The first surface that face bending direction is identical, curvature is equal, and form first surface on the surface away from flatness layer 105.And then
Form the subsequent film of Organic Light Emitting Diode.The light that the first surface of formation can send Organic Light Emitting Diode is no longer big
Part is launched with 90 degree of angle straight line, but launches the scattered light of different angles, so as to improve visual angle.
For example, a kind of second curved surface formation structural representation that Figure 10 provides for the present embodiment.As shown in Figure 10, due to can
The mask plate provided using example IV is by adjusting light transmission rate so that Part I and Part II have different light saturating
Cross rate, and the light transmission rate of Part I is more than the light transmission rate of Part II, therefore form to flatness layer 105 different photographs
Degree, can be by the flat of flatness layer 105 through photoetching treatment formation warp architecture, i.e., in flatness layer 105 using the mask plate
Remote underlay substrate surface on form the second curved surface, without increasing technique.Now, can be using photoresist formation flatness layer
105, for example, the material of flatness layer 105 may include polyimides, but not limited to this.Then the first electricity is formed on second curved surface
Pole 102, it is equal that first electrode 102 forms, curvature identical with the second curved surface bending direction on the surface away from flatness layer 105
First surface.
So as to, in the subsequent film of Organic Light Emitting Diode, interface between two layers of arbitrary neighborhood and away from underlay substrate
The surface of 101 layer has first surface 201, and the Organic Light Emitting Diode of the bending of formation can form what is launched to all angles
Scattered light, so as to improve visual angle.When the Organic Light Emitting Diode with first surface 201 is arranged on bending section, people observes
When seeing, the light for receiving bending section increases, and realizes preferable display effect.
It is of course also possible to use other modes make it that the upper surface of first electrode forms first surface, for example, to the first electricity
Pole is performed etching so that the upper surface of first electrode forms curved-surface structure.Side of the embodiment of the present utility model to formation curved surface
Formula is not construed as limiting.
Substrate 100 is also show in Figure 10, can be by the underlay substrate of flexible display panels when making flexible display panels
101 are placed in substrate 100 and are made.Substrate 100 is removed after completing.Other structures are omitted in Figure 10.The utility model
Embodiment in, using Organic Light Emitting Diode close to underlay substrate layer as first electrode, Organic Light Emitting Diode is away from substrate
The layer of substrate is not limited to this to be illustrated exemplified by second electrode.
Illustrated above so that the surface of the remote underlay substrate of flatness layer forms concave shape as an example.
It is illustrated above so that front is luminous as an example.It should be noted that embodiment of the disclosure not limited to this, example
Such as, organic LED display panel can also be back side illuminated.
Embodiment six
The present embodiment provides a kind of display device, including embodiment one or the Organic Light Emitting Diode described in embodiment two show
Show panel.
For example, the display device can for the display device such as OLED display and the TV including OLED display,
Any product or portion with display function such as digital camera, mobile phone, wrist-watch, panel computer, notebook computer, navigator
Part.
Have it is following some need explanation：
(1) unless otherwise defined, in the utility model embodiment and accompanying drawing, same reference represents same implication.
(2) in the utility model embodiment accompanying drawing, the structure being related to the utility model embodiment is related only to, other
Structure refers to be commonly designed.
(3) for clarity, in the accompanying drawing for describing embodiment of the present utility model, the thickness quilt in layer or region
Amplification.It is appreciated that when the element of such as layer, film, region or substrate etc is referred to as being located at "above" or "below" another element,
The element " direct " can be located at "above" or "below" another element, or there may be intermediary element.
(4) in the case where not conflicting, the feature in same embodiment and non-be the same as Example of the present utility model can phase
Mutually combination.
The above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model is disclosed
Or replace, it should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with the power
The protection domain that profit is required is defined.
Claims (19)
1. a kind of organic LED display panel, including bending section, the protrusion side of the bending section is light emission side, described curved
Pars convoluta includes underlay substrate and the multiple Organic Light Emitting Diodes being arranged on the underlay substrate, it is characterised in that described
Organic Light Emitting Diode includes multiple layers, and the multiple layer includes luminescent layer, and the luminescent layer has first surface, described curved
The bending direction of first surface described in pars convoluta and the underlay substrate on the contrary, or, first surface described in the bending section with
The bending direction of the underlay substrate is identical and curvature of the first surface is more than the curvature of the underlay substrate.
2. organic LED display panel according to claim 1, it is characterised in that the bending section has to be described
At least a portion of machine LED display panel close to its edge.
3. organic LED display panel according to claim 1, it is characterised in that the light emitting diode
The layer formed after the luminescent layer has the first surface.
4. organic LED display panel according to claim 1, it is characterised in that the Organic Light Emitting Diode
Each layer be respectively provided with the first surface.
5. organic LED display panel according to claim 1, also including being arranged on the underlay substrate and institute
Flatness layer between the layer for the close underlay substrate for stating Organic Light Emitting Diode, it is characterised in that the organic light emission two
The layer of the close underlay substrate of pole pipe is contacted with the flatness layer, the surface of the remote underlay substrate of the flatness layer
With the second curved surface, the bending direction of second curved surface is identical with the bending direction of the first surface, and curvature is identical.
6. the organic LED display panel according to claim any one of 1-5, it is characterised in that organic hair
The layer of the close underlay substrate of optical diode is anode, and the Organic Light Emitting Diode also includes the moon on the anode
Pole, the luminescent layer is arranged between the anode and the negative electrode.
7. organic LED display panel according to claim 6, it is characterised in that the Organic Light Emitting Diode
Also include in hole transmission layer, hole injection layer, hole blocking layer, electron transfer layer, electron injecting layer, electronic barrier layer at least
One of.
8. a kind of display device, including the organic LED display panel described in claim any one of 1-7.
9. a kind of mask plate, including Part I and Part II, the Part II are arranged on the periphery of the Part I；
Characterized in that, the Part II includes arranging successively on the direction from close to the Part I to away from the Part I
Multiple subdivisions of cloth, and from the close Part I to the direction away from the Part I, the multiple subdivision
Light transmission rate is sequentially reduced, and light transmission rate of the light transmission rate more than each subdivision of the Part I, or, by
Close to the Part I to the direction away from the Part I, the light transmission rate of the multiple subdivision increases successively, and
And the light transmission rate of the Part I is less than the light transmission rate of each subdivision.
10. mask plate according to claim 9, it is characterised in that the area of the Part I is more than each sub-portion
The area divided.
11. mask plate according to claim 9, it is characterised in that set between the Part II and the Part I
Being equipped between the first interval, the two neighboring subdivision has the second interval.
12. mask plate according to claim 11, it is characterised in that the area at first interval is more than each described second
The area at interval.
13. mask plate according to claim 11, it is characterised in that along from close to the Part I to away from described the
A part direction, it is each it is described second interval area equation or be sequentially reduced.
14. mask plate according to claim 11, it is characterised in that first interval and the described second interval are impermeable
Light.
15. mask plate according to claim 9, it is characterised in that the Part I and the Part II are adjacent,
Two neighboring subdivision in the Part II is adjacent, from the Part I to the direction of the Part II on, institute
The light transmission rate for stating Part I and each subdivision is sequentially reduced.
16. mask plate according to claim 9, it is characterised in that the Part I and the Part II are adjacent,
Two neighboring subdivision in the Part II is adjacent, from the Part I to the direction of the Part II on, institute
The light transmission rate for stating Part I and each subdivision increases successively.
17. mask plate according to claim 9, it is characterised in that the shape of the Part I includes polygon, circle
Any of.
18. the mask plate according to claim any one of 9-17, it is characterised in that the Part II is located at described first
Partial side, the mask plate also includes the Part III with the Part II with identical structure and arrangement, institute
State Part III and the Part II is misaligned.
19. the mask plate according to claim any one of 9-17, it is characterised in that the Part II surrounds described first
Part is set, and forms closing structure.
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| CN201621169593.5U CN206322696U (en) | 2016-11-02 | 2016-11-02 | Organic LED display panel, display device and mask plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621169593.5U CN206322696U (en) | 2016-11-02 | 2016-11-02 | Organic LED display panel, display device and mask plate |
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| US20180076270A1 (en) * | 2016-09-13 | 2018-03-15 | Samsung Display Co., Ltd . | Display device |
| CN108022943A (en) * | 2016-11-02 | 2018-05-11 | 京东方科技集团股份有限公司 | Organic LED display panel and preparation method thereof, mask plate |
| CN110010788A (en) * | 2017-12-22 | 2019-07-12 | 乐金显示有限公司 | Flexible display apparatus |
| CN111129098A (en) * | 2019-12-30 | 2020-05-08 | 武汉天马微电子有限公司 | Organic light-emitting display panel and device |
| WO2020192365A1 (en) * | 2019-03-26 | 2020-10-01 | 京东方科技集团股份有限公司 | Oled display panel and oled display device |
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| US20180076270A1 (en) * | 2016-09-13 | 2018-03-15 | Samsung Display Co., Ltd . | Display device |
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| CN108022943A (en) * | 2016-11-02 | 2018-05-11 | 京东方科技集团股份有限公司 | Organic LED display panel and preparation method thereof, mask plate |
| CN108022943B (en) * | 2016-11-02 | 2019-11-01 | 京东方科技集团股份有限公司 | Organic LED display panel and preparation method thereof, mask plate |
| CN110010788A (en) * | 2017-12-22 | 2019-07-12 | 乐金显示有限公司 | Flexible display apparatus |
| US10867532B2 (en) | 2017-12-22 | 2020-12-15 | Lg Display Co., Ltd. | Flexible display device that prevents difference in the viewing angle between the bend portion and flat portion |
| CN110010788B (en) * | 2017-12-22 | 2021-07-30 | 乐金显示有限公司 | Flexible display device |
| WO2020192365A1 (en) * | 2019-03-26 | 2020-10-01 | 京东方科技集团股份有限公司 | Oled display panel and oled display device |
| US11956995B2 (en) | 2019-03-26 | 2024-04-09 | Chengdu Boe Optoelectronics Technology Co., Ltd. | OLED display panel and OLED display device including edge curved-surface display area |
| CN111129098A (en) * | 2019-12-30 | 2020-05-08 | 武汉天马微电子有限公司 | Organic light-emitting display panel and device |
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