CN109584728A - Flexible display - Google Patents
Flexible display Download PDFInfo
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- CN109584728A CN109584728A CN201910093187.7A CN201910093187A CN109584728A CN 109584728 A CN109584728 A CN 109584728A CN 201910093187 A CN201910093187 A CN 201910093187A CN 109584728 A CN109584728 A CN 109584728A
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- 239000000758 substrate Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims description 61
- 238000000926 separation method Methods 0.000 claims description 46
- 230000003287 optical effect Effects 0.000 claims description 14
- 238000002834 transmittance Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 140
- 238000010276 construction Methods 0.000 description 47
- 238000010586 diagram Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000002310 reflectometry Methods 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- -1 acryl Chemical group 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- YZZNJYQZJKSEER-UHFFFAOYSA-N gallium tin Chemical compound [Ga].[Sn] YZZNJYQZJKSEER-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- KYKLWYKWCAYAJY-UHFFFAOYSA-N oxotin;zinc Chemical compound [Zn].[Sn]=O KYKLWYKWCAYAJY-UHFFFAOYSA-N 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- TYHJXGDMRRJCRY-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) tin(4+) Chemical compound [O-2].[Zn+2].[Sn+4].[In+3] TYHJXGDMRRJCRY-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
A flexible display includes a first substrate and a pixel definition layer. The pixel definition layer is located on the first substrate and provided with a plurality of openings. Each opening corresponds to a pixel region. The pixel definition layer has a transmittance of less than 1% and has a plurality of microstructures. Each microstructure protrudes in a direction away from the first substrate.
Description
Technical field
The present invention relates to a kind of flexible display (flexible display, flexible display), and in particular to one
The low reflective flexible display of kind.
Background technique
Since flexible display has both the advantages of small in size, pliable, easy to carry etc., demand more day in the market
Benefit is promoted.In traditional flexible display, in order to enable display thickness to reduce and be easy to bend, polarizer may be saved
Slightly.However, in the flexible display of not polarizer, the problem of but there are metal reflectives, the display of display is caused to be imitated
Fruit is bad, makes viewer that can not have good visual enjoyment.
Therefore, still it can reduce reflective flexible display it is urgent to provide a kind of at present.
Summary of the invention
The present invention relates to a kind of flexible displays, and in particular to a kind of low reflective flexible display.Due to the present invention
The pixel defining layer of flexible display be material using penetrance less than 1%, and there are multiple microstructures, therefore can slow down
The situation of metal reflective improves display quality.
According to the first aspect of the invention, a kind of flexible display is proposed.Flexible display include a first substrate and
One pixel defining layer.Pixel defining layer is located on first substrate, has multiple openings.The corresponding pixel region of each opening.
The penetrance of pixel defining layer has multiple microstructures less than 1%.Each microstructure is towards being away from first substrate
Direction is prominent.
More preferably understand to have to above-mentioned and other aspect of the invention, special embodiment below, and cooperates specification
Detailed description are as follows for attached drawing:
Detailed description of the invention
Figure 1A shows the sectional view of the flexible display according to one embodiment of the invention.
Figure 1B shows the schematic diagram of the flexible display of Figure 1A after the bend.
Fig. 2A shows the sectional view of the stepped construction of the flexible display according to one embodiment of the invention.
Fig. 2 B shows the sectional view of the stepped construction of the flexible display according to another embodiment of the present invention.
Fig. 3 A shows the top view of the stepped construction of the flexible display according to one embodiment of the invention.
Fig. 3 B shows the top view of the stepped construction of the flexible display according to another embodiment of the present invention.
Fig. 4 A shows the enlarged cross-sectional view of the microstructure of the flexible display according to one embodiment of the invention.
Fig. 4 B shows the enlarged cross-sectional view of the microstructure of the flexible display according to another embodiment of the present invention.
Fig. 4 C shows the enlarged cross-sectional view of the microstructure of the flexible display according to another embodiment of the present invention.
Fig. 4 D shows the enlarged cross-sectional view of the microstructure of the flexible display according to another embodiment of the present invention.
Fig. 4 E shows the enlarged cross-sectional view of the microstructure of the flexible display according to another embodiment of the present invention.
Fig. 5 A shows the sectional view of the stepped construction of the flexible display according to another embodiment of the present invention.
Fig. 5 B shows the sectional view of the stepped construction of the flexible display according to another embodiment of the present invention.
Fig. 6 A shows the oblique view of the stepped construction of the flexible display according to one embodiment of the invention.
Fig. 6 B shows the oblique view of the stepped construction of the flexible display according to another embodiment of the present invention.
Fig. 7 A shows the sectional view of the stepped construction of the flexible display according to another embodiment of the present invention.
Fig. 7 B shows the sectional view of the stepped construction of the flexible display according to another embodiment of the present invention.
Fig. 8 A shows the top view of the stepped construction of the flexible display according to one embodiment of the invention.
Fig. 8 B shows the top view of the stepped construction of the flexible display according to another embodiment of the present invention.
Description of symbols:
2: flexible display
5: basilar memebrane
10: stepped construction
15: cover plate
100A, 100B, 200A, 200B, 300A, 300B: stepped construction
101、102、103、104、105、141、161、171、181、221、231、241、251、271、341、351、361、
371,421,431,441,451,461,471,541,561,571,621,631,641,661,671: microstructure
110: first substrate
110a, 111a: upper surface
111: flexible parent metal
112: buffer layer
114: interlayer dielectric layer
110s: switch unit
115: active layers
117: grid
120,220,420,620: flatness layer
130,230,430,630: second electrode
140,240,340,440,540,640: pixel defining layer
150,250,350,450: light-emitting component
160,360,460,560,660: separation material
170,270,370,470,570,670: first electrode
180: light shield layer
184: hole
190,290,390,490,590,690: opening
192: pixel region
1131: the first insulating layers
1132: second insulating layer
1161: drain electrode
1162: source electrode
1181: drain electrode
1182: gate electrode
1183: source electrode
A, A ': arrow
D1、D2、D3、D4: distance
L1、L2、L3、L4: height
R, G, B: pixel
R0、R1、R2、R3: radius
W1、W3、W4: width
Specific embodiment
Description of the invention provides different embodiments to illustrate the technical characteristic of different embodiments of the present invention.Wherein,
Each element in embodiment is configured to purposes of discussion, is not intended to limit the invention.And in embodiment drawing reference numeral part
It repeats, to simplify the explanation, the relevance being not meant as between different embodiments.
Flexible display of the invention has pixel defining layer of the penetrance less than 1%, and has multiple microstructures, can
With lower reflectivity, therefore the situation of the metal reflective of display interior can be slowed down, promote display quality.
Figure 1A shows the sectional view of the flexible display 2 according to one embodiment of the invention.
Figure 1A is please referred to, flexible display 2 includes basilar memebrane 5, stepped construction 10 and cover plate 15.Stepped construction 10 is located at
On basilar memebrane 5, cover plate 15 is located in stepped construction 10.Also that is, stepped construction 10 be located at basilar memebrane 5 and cover plate 15 it
Between.Basilar memebrane 5 can be formed (such as: PET, PI polyimides ... etc.) by polymer.Stepped construction 10 can be light-emitting component battle array
Column substrate (after being described in detail).Cover plate 15 can be glass plate, plastic cement cover (material: PC, PET, PI ... etc.), top
Face can be used as inspection surface.Flexible display 2 can be to be made of bent material, e.g. can be towards arrow A and A '
Direction bending, allows user to can be convenient carrying.
Figure 1B shows the schematic diagram of the flexible display 2 of Figure 1A after the bend.
Figure 1B is please referred to, after the flexible display 2 of Figure 1A is bent towards the direction of arrow A and A ', the song of bending
Rate radius R0It can be less than 4 millimeters, e.g. 2 to 3 millimeters.
In addition polarizer is not set among flexible display 2 of the invention between basilar memebrane 5 and cover plate 15, but
Directly replace the optical effect of polarizer by the optical design among stepped construction 10.Therefore, compared to being provided simultaneously with polarisation
For the comparative example (radius of curvature of bending is, for example, 4 millimeters) of plate and stepped construction between basilar memebrane and cover plate, this hair
Bright flexible display 2 has lesser thickness, is relatively easy to bend, and is more convenient to carry, and can still have good display
Quality (the problem of metal reflective is e.g. improved by the optical design among stepped construction 10).
Fig. 2A shows the sectional view of the stepped construction 100A of the flexible display 2 according to one embodiment of the invention.
A referring to figure 2. shows the office of an embodiment of the stepped construction 10 corresponding to flexible display 2 shown in FIG. 1
Portion's enlarged drawing.In the present embodiment, the stepped construction 100A of flexible display 2 may include first substrate 110, flatness layer 120,
Two electrodes 130, pixel defining layer 140, a plurality of light-emitting elements 150 (one is only shown in Fig. 2A), separation material 160, first electrode
170 and light shield layer 180.First substrate 110 has upper surface 110a, and wherein flatness layer 120, second electrode 130, pixel are fixed
Adopted layer 140, light-emitting component 150, separation material 160, first electrode 170 and light shield layer 180 can sequentially be stacked in first substrate 110
Upper surface 110a on.
In one embodiment, first substrate 110 can be the composite construction of multilayer.For example, first substrate 110 may include soft
Property (soft) substrate 111, buffer layer 112, the first insulating layer 1131, second insulating layer 1132, interlayer dielectric layer 114 and switch
Unit 110s.Buffer layer 112, the first insulating layer 1131, second insulating layer 1132 and interlayer dielectric layer 114 can be along flexible bases
The normal direction (the e.g. direction of Z axis) of the upper surface 111a of material 111, is sequentially stacked in the upper surface of flexible parent metal 111
On 111a.Switch unit 110s may include active layers 115, drain electrode 1161, source electrode 1162, grid 117, drain electrode 1181, grid
Pole electrode 1182 and source electrode 1183.In the present embodiment, active layers 115, drain electrode 1161 and source electrode 1162 can be formed in together
In one plane (such as being formed on the upper surface of buffer layer 112), and the covering by the first insulating layer 1131.Grid 117
It can be formed on the upper surface of the first insulating layer 1131, and the covering by second insulating layer 1132.Flexible parent metal 111 can be by gathering
Made by acid imide.Buffer layer 112 and interlayer dielectric layer 114 can be as made by Inorganic Dielectric Materials.First insulating layer 1131
And second insulating layer 1132 can be as made by oxide, e.g. silica.The material of active layers 115 may include oxide half
Conductor or polysilicon, this oxide semiconductor can be the hopcalite of the element of the 2 to 4th race in the periodic table of elements,
E.g. indium gallium zinc (IGZO), indium oxide zinc-tin (IZTO), indium gallium tin (IGTO), indium zinc oxide (IZO), indium oxide
Gallium (IGO), zinc-tin oxide (ZTO) and tin oxide (SnO).Drain electrode 1181, gate electrode 1182 and source electrode 1183 can
As made by metal material.
In the present embodiment, pixel defining layer 140 is located on first substrate 110, is e.g. located at the upper table of flatness layer 120
On face.Pixel defining layer 140 has low penetrance and reflectivity, can be by black matrix" photoresist (Black Matrix
Resist) as made by acryl resin material.In one embodiment, the penetrance of pixel defining layer 140 is less than 1%.Also that is,
The material of pixel defining layer 140 has low light transmittance, can be dark material.Also, pixel defining layer 140 has multiple micro-
Type structure 141, and each microstructure 141 is prominent towards the direction for being away from first substrate 110.In the upper of first substrate 110
In the normal direction of surface 110a, pixel defining layer 140 can be overlapped in drain electrode 1181, gate electrode 1182 and source electrode
1183 or with above-mentioned electrode be electrically connected signal wire.When ambient lighting is mapped to the inside of stepped construction 100A, metal member is encountered
Part (e.g. drain electrode 1181, gate electrode 1182, source electrode 1183 and signal wire) and when generating reflection light, penetrate
The low and pixel defining layer 140 with multiple microstructures of rate can absorb the reflected light in different angle, and can avoid light mistake
In concentration, influence of the ambient light for the display quality of picture can be reduced.Pixel defining layer 140 can form multiple openings 190
(being illustrated in Fig. 3 A), each opening 190 can correspond to a pixel region 192 or a subpixel area.A plurality of light-emitting elements
150, which respectively correspond pixel defining layer 140, is formed by opening 190, and is electrically connected at first electrode 170 and second electrode 130.
First electrode 170 is covered in the surface of pixel defining layer 140, light-emitting component 150 and separation material 160, and conformal in pixel definition
Layer 140, light-emitting component 150 and separation material 160.It also is that first electrode 170 conforms to pixel defining layer 140, light-emitting component
150 with the morphologic prominence of separation material 160, and have corresponding shape or external form.Second electrode 130 can be formed in flatness layer
On 120 upper surface and flatness layer 120 is passed through, (is e.g. contacted with drain electrode electricity to be electrically connected simultaneously contact-making switch unit 110s
Pole 1181).Light-emitting component 150 between first electrode 170 and second electrode 130, and be electrically connected at first electrode 170 with
Second electrode 130.Light-emitting component 150 is, for example, Organic Light Emitting Diode.First electrode 170 is, for example, cathode, second electrode 130
E.g. anode.
In one embodiment, the quantity of separation material 160 is greater than 1 (Fig. 2A is merely exemplary to show 1 separation material).Multiple gaps
It can be separated from each other between object 160.Separation material 160 is located in pixel defining layer 140, can be by black matrix" photoresist (Black
Matrix Resist) as made by acryl resin material, there is low penetrance and reflectivity.For example, separation material 160
Penetrance is less than 1%.Also, separation material 160 includes microstructure 161.Each microstructure 161 can be towards being away from the first base
The direction of plate 110 is prominent.The quantity of microstructure 161 can be equal to 1 or greater than 1.The top of the microstructure 161 of separation material 160
There is first distance D between portion and the upper surface 110a of first substrate 1101, the microstructure 141 of pixel defining layer 140 and
There is second distance D between the upper surface 110a of one substrate 1102, and first distance D1Greater than second distance D2.Similar to pixel
The optical effect of definition layer 140 encounters hardware and (e.g. drains when ambient lighting is mapped to the inside of stepped construction 100A
Electrode 1181, gate electrode 1182 and, source electrode 1183 and signal wire) and when generating reflection light, penetrance is low and has
The separation material of microstructure can absorb the reflected light in different angle, and relatively can avoid light and excessively concentrate, compared to only having
The optical design (e.g. using the low material of penetrance and there is microstructure 141) of above-mentioned pixel defining layer 140 and gap
For object does not have the embodiment of above-mentioned optical design, influence of the ambient light for the display quality of picture can be more reduced.
In one embodiment, 170 coverage gap object 160 of first electrode and pixel defining layer 140, and there are multiple miniature knots
Structure 171.The part of 170 covering luminous element 150 of first electrode does not have microstructure 171 then.A part of first electrode 170
Microstructure 171 have corresponding to pixel defining layer 140 microstructure 141 external form, a part of first electrode 170
Microstructure 171 has the external form of the microstructure 161 corresponding to separation material 160.First electrode 170 corresponds to separation material
There is third distance D between the top section of 160 microstructure 161 and the upper surface 110a of first substrate 1103, the first electricity
The upper surface 110a of the top section of the microstructure 141 corresponding to pixel defining layer 140 of pole 170 and first substrate 110 it
Between have the 4th distance D4, third distance D3Greater than the 4th distance D4。
In one embodiment, light shield layer 180 is located on first electrode 170, has the hole corresponding to light-emitting component 150
184.Light shield layer 180 has antiradar reflectivity and penetrance, by such as Asia gram black matrix" photoresist (Black Matrix Resist)
Made by power resin material, such as penetrance is less than 1%.Compared to only with the optical design (example of above-mentioned pixel defining layer 140
In this way using the low material of penetrance and with microstructure 141) and separation material 160 optical design (e.g. using wearing
The saturating low material of rate and with microstructure 161) without light shield layer 180 optical design (e.g. using penetrance it is low
Material) embodiment for, the low light transmission material of light shield layer 180 can more reduce ambient light for picture in the present embodiment
The influence of display quality.In other embodiments, stepped construction 100A of the invention can also not have light shield layer 180, the first electricity
It pole 170 can be not by the covering for hiding dress layer 180.Between multiple microstructures (e.g. between microstructure 141, miniature knot
Between structure 161, between microstructure 171) can have a size that part is identical and part is different, but e.g. width, height that
This is identical or different.
Fig. 2 B shows the sectional view of the stepped construction 100B of the flexible display 2 according to another embodiment of the present invention.Layer
The structure of stack structure 100B is analogous to stepped construction 100A, the difference is that, light shield layer 180 has microstructure 181,
Flatness layer 220 has microstructure 221, and second electrode 230 has microstructure 231, and light-emitting component 250 has microstructure
251, and the configuration mode of the microstructure 271 of the microstructure 241 and first electrode 270 of pixel defining layer 240 respectively with picture
The microstructure 141 of plain definition layer 140 and the microstructure 171 of first electrode 170 are different, other repetitions are in this not
It is described in detail again.
The upper surface of B referring to figure 2., light shield layer 180 have multiple microstructures 181, and the upper surface of flatness layer 220 has
Multiple microstructures 221.Each microstructure 181 of light shield layer 180 and each microstructure 221 of flatness layer 220 are towards remote
It is prominent from the direction of first substrate 110.The upper surface of second electrode 230 also has microstructure 231, also that is, second electrode
230 microstructure 231 is directly contacted with light-emitting component 250.Compared to 2A figure pixel defining layer 140 for, pixel is fixed
Area of the adopted layer 240 on flatness layer 220 is less, and the flatness layer 220 of part can be directly contacted with first electrode 270.First
Electrode 270 is directly covered in the region on flatness layer 220, and first electrode 270 can conform to the landforms of flatness layer 220, so that
The microstructure 271 of first electrode 270 can have corresponding external form with the microstructure 221 of flatness layer 220.Also, the first electricity
The part microstructure 271 of pole 270 is on the upper surface of luminescence unit 150.Stepped construction 100A compared to Fig. 2A and
Speech, since stepped construction 100B has the design of more microstructures, the e.g. microstructure 271 of first electrode 270
Quantity is more, and light shield layer 180 has microstructure 181, and flatness layer 220 has microstructure 221, and second electrode 230 also has
Microstructure 231 more preferably can encounter reflected light caused by hardware by decentralized environment light, can avoid observer's impression
To the light more concentrated, it is relatively beneficial to the display quality of picture.
In Fig. 2A and Fig. 2 B, microstructure 141,161,171,181,221,231,271, which is all illustratively drawn, is considered as half
Ball-shaped.However, the present invention is not limited thereto, microstructure can be arbitrary geometry (e.g. ball, circular cone,
Cylinder, pyrometric cone, triangular prism, cuboid, cube, trapezoid cylinder), it repeats after appearance, as long as can be realized the mesh of disperse light
?.
Fig. 3 A shows the top view of the stepped construction 100A of the flexible display 2 according to one embodiment of the invention, example
Property show microstructure in Fig. 2A relative position schematic diagram (omitting light shield layer 180 and first electrode 170).
A referring to figure 3., pixel defining layer 140 have microstructure 141, and separation material 160 has microstructure 161.Pixel
Definition layer 140 forms multiple openings 190, each opening 190 corresponding pixel region 192 (e.g. a red pixel R, green
Pixel G and blue pixel B).Separation material 160 is set in pixel defining layer 140.Microstructure 141 and 161 may respectively be ball
Type, cylindrical type or pyramid type.
Fig. 3 B shows the top view of the stepped construction 100B of the flexible display 2 according to another embodiment of the present invention, shows
The schematic diagram (omitting light shield layer 180 and first electrode 170) of the relative position of microstructure in Fig. 2 B is shown to example property.
B referring to figure 3., pixel defining layer 240 have microstructure 241, separation material 160 have microstructure 161, first
Electrode 270 has microstructure 271.Pixel defining layer 240 forms multiple openings 290, the corresponding pixel region of each opening 290
Domain (e.g. red pixel R, green pixel G and blue pixel B).Separation material 160 is set in pixel defining layer 240.First
The microstructure 271 of electrode 270 can correspond to opening 290, e.g. be covered in light-emitting component 150 (being illustrated in Fig. 2 B).It is micro-
Type structure 241,161 and 271 may respectively be ball-shaped, cylindrical type or pyramid type.
Fig. 4 A shows the enlarged cross-sectional view of the microstructure 101 according to the flexible display of one embodiment of the invention.On
The external form for any microstructure (e.g. microstructure 141,161,181,221,231,241,271) stated can be applied to miniature
Structure 101 can be ball-shaped or semicircle ball-type.The radius R of microstructure 1011It can be between 0.1 micron to 10 microns.
Fig. 4 B shows the enlarged cross-sectional view of the microstructure 102 according to the flexible display of another embodiment of the present invention.
The external form of above-mentioned any microstructure (e.g. microstructure 141,161,181,221,231,241,271) can be applied to micro-
Type structure 102 can be cylindrical type.The radius R of microstructure 1022Can be between 0.1 micron to 10 microns, height L1It can be 0.1
Micron is to 5 microns.
Fig. 4 C shows the enlarged cross-sectional view of the microstructure 103 according to the flexible display of another embodiment of the present invention.
The external form of above-mentioned any microstructure (e.g. microstructure 141,161,181,221,231,241,271) can be applied to micro-
Type structure 103 can be pyramid type.The radius R of microstructure 1033Can be between 0.1 micron to 10 microns, height L2It can be 0.1
Micron is to 5 microns.
Fig. 4 D shows the enlarged cross-sectional view of the microstructure 104 according to the flexible display of another embodiment of the present invention.
The external form of above-mentioned any microstructure (e.g. microstructure 141,161,181,221,231,241,271) can be applied to micro-
Type structure 104 can be triangular pyramid type.The width W of microstructure 1041Can be between 0.1 micron to 10 microns, height L3Can be
0.1 micron to 5 microns.
Fig. 4 E shows the enlarged cross-sectional view of the microstructure 105 according to the flexible display of another embodiment of the present invention.
The external form of above-mentioned any microstructure (e.g. microstructure 141,161,181,221,231,241,271) can be applied to micro-
Type structure 105 can be trapezoid cylinder (being formed by X-axis and Z axis is ladder type in sectional view).Microstructure 105 is being away from
There is top width W in the top surface of first substrate 1103, there is bottom width W in the bottom surface close to first substrate 1104.Bottom width
W4Greater than top width W3.Top width W3Can be between 0.1 micron to 10 microns, bottom width W4It can be between 0.1 micron extremely
20 microns.Vertical height L between the top surface and bottom surface of microstructure 1054It can be 0.1 micron to 5 microns.
Fig. 5 A shows the sectional view of the stepped construction 200A of the flexible display 2 according to another embodiment of the present invention.Layer
The structure of stack structure 200A is analogous to stepped construction 100A, the difference is that being not provided with light shield layer, and pixel definition
Microstructure 341, the external form of the microstructure 371 of the microstructure 361 of separation material 360 and first electrode 370 point of layer 340
Do not have with the microstructure 141 of pixel defining layer 140, the microstructure 161 of separation material 160 and first electrode 170 miniature
The external form of structure 171 is different, other repetitions are no longer described in detail in this.
A referring to figure 5., the microstructure 361 of the microstructure 341 and separation material 360 of pixel defining layer 340 have
There is the external form of pyramid type (such as embodiment of Fig. 4 C) or triangular pyramidal (such as embodiment of Fig. 4 D).The miniature knot of first electrode 370
Structure 371 is then conformal in microstructure 341 or 361.When microstructure 341 and 361 is cone, size range can be identical to figure
The microstructure 103 of 4C.When microstructure 341 and 361 is triangular pyramidal, size range can be identical to the microstructure of Fig. 4 D
104。
Fig. 5 B shows the sectional view of the stepped construction 200B of the flexible display 2 according to another embodiment of the present invention.Layer
The structure of stack structure 200B is analogous to stepped construction 100B, the difference is that being not provided with light shield layer, and flatness layer 420
Microstructure 421, the microstructure 351 of light-emitting component 350, the microstructure 431 of second electrode 430, pixel defining layer 440
Microstructure 441, the external form of the microstructure 471 of the microstructure 461 of separation material 460 and first electrode 470 respectively with
Microstructure 221, the microstructure 251 of light-emitting component 250, microstructure 231, the pixel of second electrode 230 of flatness layer 220
The microstructure 241 of definition layer 240, the microstructure 161 of separation material 160 and first electrode 270 have microstructure 271
External form is different, other repetitions are no longer described in detail in this.
B referring to figure 5., microstructure 421, microstructure 351, the second electrode of light-emitting component 350 of flatness layer 420
430 microstructure 431, the microstructure 441 of pixel defining layer 440, the microstructure 461 of separation material 460 can have circular cone
The external form of type (such as embodiment of Fig. 4 C) or triangular pyramidal (such as embodiment of Fig. 4 D).The microstructure 471 of first electrode 470 is then
It is conformal in microstructure 351,441 or 461.When the microstructure 421 of flatness layer 420, the microstructure 431 of second electrode 430,
When microstructure 441, the microstructure 461 of separation material 460 of pixel defining layer 440 are cone, size range can be identical to
The microstructure 103 of Fig. 4 C.Microstructure 421, the microstructure 431 of second electrode 430, pixel definition when flatness layer 420
When microstructure 441, the microstructure 461 of separation material 460 of layer 440 are triangular pyramidal, size range can be identical to Fig. 4 D's
Microstructure 104.
Fig. 6 A shows the oblique view of the stepped construction 200A of the flexible display 2 according to one embodiment of the invention, example
Property show microstructure in Fig. 5 A relative position schematic diagram (omitting first electrode 370).
Fig. 6 A is please referred to, pixel defining layer 340 has microstructure 341, and separation material 360 has microstructure 361.Pixel
Definition layer 340 forms multiple openings 390, each opening 390 corresponding pixel region (e.g. a red pixel R, green pixel
G and blue pixel B).Separation material 360 is set in pixel defining layer 340.Microstructure 341 and 361 may respectively be pyrometric cone or
Triangular prism.
Fig. 6 B shows the oblique view of the stepped construction 200B of the flexible display 2 according to another embodiment of the present invention, shows
The schematic diagram of the relative position of microstructure in Fig. 5 B is shown to example property.
Please referring to Fig. 6 B, pixel defining layer 440 has a microstructure 441, and separation material 460 has a microstructure 461, and first
Electrode 470 has microstructure 471.Pixel defining layer 440 forms multiple openings 490, the corresponding pixel region of each opening 490
Domain (e.g. red pixel R, green pixel G and blue pixel B).Separation material 460 is set in pixel defining layer 440.First
The microstructure 471 of electrode 470 can correspond to opening 490, e.g. be covered in light-emitting component 150 (being illustrated in Fig. 5 B).It is micro-
Type structure 441,461 and 471 may respectively be pyrometric cone or triangular prism.
Fig. 7 A shows the sectional view of the stepped construction 300A of the flexible display 2 according to another embodiment of the present invention.Layer
The structure of stack structure 300A is analogous to stepped construction 100A, the difference is that being not provided with light shield layer, and pixel definition
Microstructure 541, the external form of the microstructure 571 of the microstructure 561 of separation material 560 and first electrode 570 point of layer 540
Not with the miniature knot of the microstructure 141 of pixel defining layer 140, the microstructure 161 of separation material 160 and first electrode 170
The external form of structure 171 is different, other repetitions are no longer described in detail in this.
Fig. 7 A is please referred to, the microstructure 541 of pixel defining layer 540 and the microstructure 561 of separation material 560 can have
Trapezoidal external form.The microstructure 571 of first electrode 570 is then conformal in microstructure 541 or 561.
Fig. 7 B shows the sectional view of the stepped construction 300B of the flexible display 2 according to another embodiment of the present invention.Layer
The structure of stack structure 300B is analogous to stepped construction 100B, the difference is that being not provided with light shield layer, and flatness layer 620
Microstructure 621, the microstructure 451 of light-emitting component 450, the microstructure 631 of second electrode 630, pixel defining layer 640
Microstructure 641, the external form of the microstructure 671 of the microstructure 661 of separation material 660 and first electrode 670 respectively with
Microstructure 221, the microstructure 251 of light-emitting component 250, microstructure 231, the pixel of second electrode 230 of flatness layer 220
Outside the microstructure 271 of the microstructure 241 of definition layer 240, the microstructure 261 of separation material 260 and first electrode 270
Type is different, other repetitions are no longer described in detail in this.
Please refer to Fig. 7 B, microstructure 621, microstructure 451, the second electrode of light-emitting component 450 of flatness layer 620
The microstructure 671 of 630 microstructure 631, the microstructure 661 of separation material 660 and first electrode 670 can be trapezoidal column
Body, trapezoidal external form can be had by being formed by sectional view in X-axis and Z axis.The microstructure 671 of first electrode 670 is then conformal
Microstructure 621 and partial microstructure 661 in part.
Fig. 8 A shows the top view of the stepped construction 300A of the flexible display 2 according to one embodiment of the invention, example
Property show microstructure in Fig. 7 A relative position schematic diagram (omitting first electrode 570).
Fig. 8 A is please referred to, pixel defining layer 540 has microstructure 541, and separation material 560 has microstructure 561.Pixel
Definition layer 540 forms multiple openings 590, the corresponding pixel region of each opening 590 or sub-pixel region (e.g. red picture
Plain R, green pixel G and blue pixel B).Separation material 560 is set in pixel defining layer 540.Microstructure 541 and 561 can divide
Not Wei ladder type cylinder, cuboid or bottom surface be rectangle geometry column.
Fig. 8 B shows the top view of the stepped construction 300B of the flexible display 2 according to another embodiment of the present invention, shows
The schematic diagram of the relative position of microstructure in Fig. 7 B is shown to example property.
Please referring to Fig. 8 B, pixel defining layer 640 has a microstructure 641, and separation material 660 has a microstructure 661, and first
Electrode 670 has microstructure 671.Pixel defining layer 640 forms multiple openings 690, the corresponding pixel region of each opening 690
Domain (e.g. red pixel R, green pixel G and blue pixel B).Separation material 660 is set in pixel defining layer 640.First
The microstructure 671 of electrode 670 can correspond to opening 690, e.g. be covered in light-emitting component 150 (being illustrated in Fig. 7 B).It is micro-
Type structure 641,661 and 671 may respectively be the geometry centrum or geometry column that ladder type cylinder, cuboid or bottom surface are rectangle.
In the above-described embodiments, the external form of each microstructure of pixel defining layer can be spherical, cylindrical, circular cone respectively
Shape, triangular pyramidal, trapezoidal, so the present invention is not limited thereto, in other embodiments, the microstructure of pixel defining layer it is outer
Type can be spherical shape, cylinder, cone, triangular pyramidal, trapezoidal any combination.
Following table one is please referred to, shows the bending result and optical characteristics of experimental example 1 and comparative example 1.Experimental example 1 is root
According to one embodiment of the invention flexible display 2 (as shown in Figure 1A, do not have polarizer in cover plate 15 and basilar memebrane 5 it
Between).Comparative example 1 is the flexible display with polarizer between cover plate 15 and basilar memebrane 5.Due to comparative example 1 compared to
At least more one layer of polarizer for experimental example 1, therefore there is biggish thickness.
Table one
In Table 1, by the flexible display of the flexible display of comparative example 1 and experimental example 1 respectively in different curvature radius
Cripping test is carried out under (2 millimeters, 3 millimeters and 4 millimeters), and simulates calculating strain (strain).As radius of curvature is smaller, by
The strain that the flexible display of test is born is bigger.In comparative example 1, under the bending of different curvature radius, strain
All it is greater than 1%, the strain for reviewing experimental example 1 is smaller than 1%.It can be seen that experimental example 1 is more pliable compared to for comparative example
A possibility that folding is not subject to too many strain, and rupture is with damage is lower.Also, the reflectivity of experimental example 1 is only slightly higher than ratio
Compared with the reflectivity of example 1, still has the optical characteristics of quite good anti-reflective light.
The present invention provides a kind of flexible display, and the penetrance of pixel defining layer has multiple miniature knots less than 1%
Structure.Therefore, when ambient lighting is mapped to the inside of flexible display, when encountering hardware and generating reflection light, penetrance is low
And the pixel defining layer with multiple microstructures can absorb the reflected light in different angle, and can pass through the design of microstructure
It avoids light from excessively concentrating, influence of the ambient light for the display quality of picture can be reduced.Also, since pixel defining layer has
There is above-mentioned optical characteristics, the purposes of polarizer can be replaced, so that flexible display of the invention can be not required to setting polarizer
Can have good optical characteristics (e.g. reflectivity is low), the thickness of flexible display can be reduced, it is easier to be bent
And it is hardly damaged.
Although however, it is not to limit the invention in conclusion the present invention is disclosed as above with embodiment.Institute of the present invention
Belong to technical staff in technical field, without departing from the spirit and scope of the present invention, when various variation and retouching can be made.Cause
This, protection scope of the present invention is subject to view as defined in claim.
Claims (11)
1. a kind of flexible display, comprising:
One first substrate；And
One pixel defining layer is located on the first substrate, has multiple openings, respectively the corresponding pixel region of the opening, wherein
The penetrance of the pixel defining layer has multiple microstructures less than 1%, and respectively the microstructure is that court is away from first base
The direction of plate is prominent.
2. flexible display as described in claim 1, further includes a first electrode, which is located at the pixel defining layer
On, and the first electrode has multiple microstructures, those microstructures of some of first electrodes, which have, to be corresponded to
The external form of those microstructures of the pixel defining layer.
3. flexible display as claimed in claim 2 further includes a plurality of light-emitting elements, those light-emitting components respectively correspond those
Opening setting, and respectively the light-emitting component is electrically connected at the first electrode.
4. flexible display as claimed in claim 3, wherein those microstructures of the part of the first electrode are to be located to be somebody's turn to do
On a little light-emitting components.
5. flexible display as claimed in claim 3 further includes a second electrode, it is located on the first substrate, respectively the hair
Optical element is located between the first electrode and the second electrode, and respectively the light-emitting component is electrically connected at the second electrode.
6. flexible display as claimed in claim 5, wherein the second electrode has multiple microstructures, the second electrode
Those microstructures are towards the direction protrusion for being away from the first substrate, and those microstructure positions of the part of the second electrode
In the lower section of those light-emitting components.
7. flexible display as claimed in claim 3 further includes a light shield layer, which is located on the first electrode,
With the hole for corresponding to the respectively light-emitting component, the penetrance of the light shield layer is less than 1%, and the light shield layer has multiple miniature knots
Structure, respectively microstructure of the light shield layer are prominent towards the direction for being away from the first substrate.
8. flexible display as described in claim 1 further includes a separation material, which is located in the pixel defining layer,
The penetrance of the separation material is less than 1%, and the separation material has an at least microstructure, at least one miniature knot of the separation material
Structure is prominent towards the direction for being away from the first substrate.
9. flexible display as described in claim 1, further includes a flatness layer, which is located at the first substrate and the picture
Between plain definition layer, the penetrance of the flatness layer is less than 1%.
10. flexible display as claimed in claim 9, wherein the flatness layer and there are multiple microstructures, the flatness layer
Respectively the microstructure is prominent towards the direction for being away from the first substrate.
11. flexible display as described in claim 1, wherein the external form of the respectively microstructure of the pixel defining layer is ball
Shape, cylinder, cone, triangular pyramidal, it is trapezoidal and its any combination.
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| TW107144607A TWI695530B (en) | 2018-12-11 | 2018-12-11 | Flexible display |
| TW107144607 | 2018-12-11 |
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| CN110429111A (en) * | 2019-07-15 | 2019-11-08 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN111293147A (en) * | 2020-02-19 | 2020-06-16 | 合肥鑫晟光电科技有限公司 | Substrate for display, preparation method thereof and display device |
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Also Published As
| Publication number | Publication date |
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| CN109584728B (en) | 2021-06-22 |
| TW202023089A (en) | 2020-06-16 |
| TWI695530B (en) | 2020-06-01 |
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