CN107516472A - Flexible display apparatus - Google Patents
Flexible display apparatus Download PDFInfo
- Publication number
- CN107516472A CN107516472A CN201710775898.3A CN201710775898A CN107516472A CN 107516472 A CN107516472 A CN 107516472A CN 201710775898 A CN201710775898 A CN 201710775898A CN 107516472 A CN107516472 A CN 107516472A
- Authority
- CN
- China
- Prior art keywords
- display apparatus
- flexible display
- layer
- module material
- base plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiments of the invention provide a kind of flexible display apparatus, including：Display base plate；And be arranged on inside display base plate, above or below same layer and the multistage module material for the connection that is in contact with each other；Wherein, the adjacent two sections of respective contact surfaces of module material for contacting connection are parallel with the bending axle of flexible display apparatus.When flexible display apparatus is bent, contacting adjacent two sections of module materials of connection can be separated, and gap will be produced between two contact surfaces.The stress concentration of module material can so be reduced; so that the bending stress between adjacent two sections of module materials is released; the center of stress layer of whole module, which is moved to, needs module material layer to be protected; reduce the risk of module Materials Fracture and flexible display apparatus layering; the overall anti-bending strength of flexible display apparatus is added, improves the reliability of flexible display apparatus.
Description
Technical field
The present invention relates to flexible display apparatus technical field, more particularly to a kind of flexible display apparatus.
Background technology
Flexible display apparatus is bending deformed display device, its display mode include organic electroluminescent (OLED),
The polytypes such as electrophoresis showed (EPD), liquid crystal display device (LCD).Deformable flexible flexible display apparatus can be given and use
Bring subversive usage experience in family.However, when bending deformation occurs for flexible display apparatus, the mould inside flexible display apparatus
Group material may stress concentrate and be broken, display device can be also layered because of unbalance stress, so as to cause flexibility
The display failure of display device.
The content of the invention
In view of this, the embodiments of the invention provide a kind of flexible display apparatus, solves existing flexible display apparatus folding
During bending deformation, due to the problem of failure is shown caused by the stress concentration of internal module material.
The embodiments of the invention provide a kind of flexible display apparatus, including：
Display base plate；And
Be arranged on inside the display base plate, above or below same layer and the connection that is in contact with each other multistage module material
Material；
Wherein, the curved of adjacent two sections of respective contact surfaces of module material of connection and the flexible display apparatus is contacted
It is parallel to roll over axle.
Wherein, the contact surface between the multistage module material is arranged at the preset curve region of the flexible display apparatus
It is interior.
Wherein, the multistage module material forms one layer of electric conduction routing layer inside the display base plate.
Wherein, contacting adjacent two sections of respective contact surfaces of module material of connection includes at least one protuberance and extremely
A few depressed part；
Wherein, at least one protuberance difference of a module material in the adjacent two sections module materials
Fill at least one depressed part of another module material.
Wherein, at least one protuberance is shaped as rectangle.
Wherein, the multistage module material form inside the display base plate, above or below a layer insulating.
Wherein, the layer insulating above the display base plate include it is following it is several layers of in one kind：Layer of polarizer, optical cement
Layer, touch sensitive layer and cover layer；
A layer insulating below the display base plate include it is following it is several layers of in one kind：Support membrane and screen layer.
Wherein, the flexible display apparatus further comprises：
Further comprise：
The light refraction layer of the multistage module material surface is formed at, wherein the light refraction layer includes first refractive
Region and the second index ellipsoid, wherein second index ellipsoid covers the contact position between the multistage module material；
The refractive index of wherein described second index ellipsoid is configured to, by the contact position institute between the multistage module material
The refractive index of the display light appeared is adjusted to identical with the display light that the first refractive region is appeared.
Wherein, the light refraction layer is optical bonding glue-line.
Wherein, the display base plate is oled display substrate.
Flexible display apparatus provided in an embodiment of the present invention, when flexible display apparatus is bent, contact the phase of connection
Adjacent two sections of module materials can be separated, and gap will be produced between two contact surfaces.Answering for module material can so be reduced
Power is concentrated so that the bending stress between adjacent two sections of module materials is released, and the center of stress layer of whole module is moved to
Module material layer to be protected is needed, the risk of module Materials Fracture and the risk of flexible display apparatus layering is reduced, adds
The overall anti-bending strength of flexible display apparatus, improve the reliability of flexible display apparatus.
Brief description of the drawings
Fig. 1 a-1d are respectively shown in the structural representation of the flexible display apparatus provided by one embodiment of the invention.
Fig. 2 show structural representation when bending occurs for the flexible display apparatus that one embodiment of the invention is provided.
Fig. 3 show the structural representation for the flexible display apparatus that one embodiment of the invention is provided.
Fig. 4 show the structural representation of the display base plate for the flexible display apparatus that one embodiment of the invention is provided.
Fig. 5 show the structural representation of the display base plate for the flexible display apparatus that one embodiment of the invention is provided.
Fig. 6 show the schematic diagram of the module material for the flexible display apparatus that one embodiment of the invention is provided.
Fig. 7 show the bending in one direction of the display base plate for the flexible display apparatus that one embodiment of the invention is provided
When structural representation.
Fig. 8 show being rolled in another direction for the display base plate for the flexible display apparatus that one embodiment of the invention is provided
Structural representation when curved.
Fig. 9 show the structural representation of the display base plate for the flexible display apparatus that one embodiment of the invention is provided.
Figure 10 show the structural representation of the display base plate for the flexible display apparatus that one embodiment of the invention is provided.
Figure 11 show the structural representation of the display base plate for the flexible display apparatus that one embodiment of the invention is provided.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of protection of the invention.
Fig. 1 a-1d are respectively shown in the structural representation of the flexible display apparatus provided by one embodiment of the invention, Fig. 2 institutes
It is shown as structural representation when bending occurs for the flexible display apparatus that one embodiment of the invention is provided.
As shown in Figure 1a, flexible display apparatus provided in an embodiment of the present invention includes：Display base plate 2 and it is arranged on display
The top same layer of substrate 2 and the multistage module material 1 for the connection that is in contact with each other.Wherein, adjacent two sections of module materials 1 of connection are contacted
Respective contact surface it is parallel with the bending axle 3 of flexible display apparatus.Contact connection described here refers to multistage module
Material 1 is intimate contact with one another, but is not that one prepares shaping.Display base plate 2 refers to playing the substrate of display function, such as
Can be oled substrate or TFT substrate etc., the present invention is not limited the mode that is particularly shown of display base plate 2.
With reference to figure 2, when flexible display apparatus is bent, contacting adjacent two sections of module materials 1 of connection can occur
Separate, gap 4 will be produced between two contact surface 11a.The stress concentration of module material 1 can so be reduced so that adjacent two
Bending stress between section module material 1 is released, and the center of stress layer of whole module, which is moved to, needs module material to be protected
The bed of material, the risk of module Materials Fracture and flexible display apparatus layering is reduced, adds the overall bending resistance of flexible display apparatus
Performance, improve the reliability of flexible display apparatus.
Although two sections of module materials 1 are illustrate only in the embodiment shown in Fig. 1 a, in fact the segments of module material 1
Amount can be adjusted according to the demand in flexible display apparatus manufacturing process, and the embodiment of the present invention is not done to the quantity of module material 1
It is specific to limit.
In addition, although Fig. 1 a only show a bending axle 3, it being understood, however, that display provided in an embodiment of the present invention
Device may include a plurality of bending axle.In one embodiment, this it is a plurality of bending axle 3 can be arranged in parallel or mutually crisscross cloth
Put, now the flexible display apparatus can also include the multistage module material 1 divided by a plurality of bending axle 3.The embodiment of the present invention
The concrete arrangement and quantity for the bending axle 3 that may include to the flexible display apparatus do not limit, to every section of module material
The concrete shape of material 1 does not also limit.
Although the contact surface 11a shown in Fig. 1 a is the planar structure perpendicular to the surface of module material 1, it being understood, however, that
The contact surface of multistage module material 1 can also be not orthogonal to mould for stairstepping contact surface 11b as shown in Figure 1 b, as illustrated in figure 1 c
The structures such as the inclined contact surface 11c and waveform contact surface 11d as depicted on group material 1 surface.The embodiment of the present invention pair
Contact surface 11a shape is not specifically limited.
With reference to figure 2, in one embodiment, a default bending region 5 may be present in the flexible display apparatus, pre- in order to improve
If the buckle resistance energy in bending region 5, the contact surface 11a of adjacent two sections of module materials 1 may be disposed at the default bending region 5
It is interior.When bending occurs in so default bending region 5, two contact surface 11a in default flex area 5 can be separated,
So that the display effect in preset curve region is not influenceed by bending.It should be appreciated that the preset curve region can be by designing
Personnel adjust according to the actual requirements, such as a side of flexible display apparatus can be set as into preset curve region, this hair
It is bright that the position in the preset curve region and size are not construed as limiting.
It is also understood that the flexible display apparatus also can and in the absence of default bending region 5, the now flexible display apparatus
Multiple bending axles 3 of parallel distribution, or crisscross multiple bending axles 3 may be included, but as it was previously stated, the present invention is implemented
The concrete arrangement and quantity for the bending axle 3 that example may include to the flexible display apparatus do not limit.
Although it is also understood that multistage module material 1 is constituted above display base plate 2 in the embodiment shown in Fig. 1 a
One layer, but one layer inside or below display base plate 2 can also use the multistage module material structure of the connection that is in contact with each other in fact,
The embodiment of the present invention constitutes to the multistage module material 1 inside display base plate 2, above or below which layer do not do specific limit
It is fixed.
Fig. 3 show the structural representation for the flexible display apparatus that one embodiment of the invention is provided.
As shown in figure 3, the flexible display apparatus that the embodiment of the present invention is provided may include display base plate 2 and set gradually
Layer of polarizer 103, optical cement layer 104, touch sensitive layer 105 and cover layer 106 on display base plate 2.In order to improve flexibility
The performance of display device, flexible display apparatus provided in an embodiment of the present invention can also further comprise next positioned at display base plate 2
The support film layer 102 that plays a supportive role of layer and the screen layer 101 positioned at next layer of support membrane 102.
In one embodiment, multistage module material 1 also may be configured as one layer insulating of the top of display base plate 2, such as partially
Mating plate layer 103, optical cement layer 104, touch sensitive layer 105 or cover layer 106.In another embodiment, multistage module material 1
Also an insulating barrier of the lower section of display base plate 2, such as support membrane 102 or screen layer 101 be may be configured as.It is it should be appreciated, however, that more
Section module material 1 can also form the functional layer inside display base plate 2.
In subsequent figure 4 into the embodiment shown in Figure 11, the present invention is constituted inside display base plate 2 with multistage module material
A layer insulating or electric conduction routing layer exemplified by be described.
Fig. 4 show the structural representation of the display base plate for the flexible display apparatus that one embodiment of the invention is provided.Such as
Shown in Fig. 4, display base plate 2 includes bottom plate 21 and is arranged on same layer and the multistage module material for the connection that is in contact with each other above bottom plate
Material 22.Wherein, the phase of bending axle 3 of the respective contact surface and flexible display apparatus of adjacent two sections of module materials 22 of connection is contacted
It is parallel.Multistage module material 22 may make up a layer insulating or electric conduction routing layer for display base plate 2.When display base plate 2 itself is sent out
During raw bending deformation, adjacent module material 22 can shift along away from the direction of bending axle 3 respectively, prevent display base plate 2 by
Failure caused by stress concentration when bending.
Fig. 5 show the structural representation of the display base plate for the flexible display apparatus that one embodiment of the invention is provided, Fig. 6
The schematic diagram of the module material for the flexible display apparatus that one embodiment of the invention is provided is shown, Fig. 7 show the present invention one
The structural representation during bending in one direction of the display base plate for the flexible display apparatus that embodiment is provided, Fig. 8 are shown
The structural representation in another direction bending of the display base plate for the flexible display apparatus that one embodiment of the invention is provided.
In the embodiment shown in Fig. 5 to Fig. 8, what the multistage module material 22 was formed can be one layer of electric conduction routing of display base plate 2
Layer.
With reference to figure 5 and Fig. 6, the contact surface that each module material 22a contacts connection with adjacent module material 22a may include the
One protuberance 221a, the first depressed part 222a, the second protuberance 223a and the second depressed part 224a.In two adjacent module materials
Expect in 22a, it is second recessed can to fill another section of adjacent module material 22a by one section of module material 22a the first protuberance 221a
Fall into portion 224a.Accordingly, the second protuberance 223a of another section of adjacent module material 22a can be by one section of module material 22a's
First depressed part 222a is filled.Therefore, when bending or deformation do not occur for display base plate 2, adjacent module material 22a's connects
Contacting surface is bonded to each other.
With reference to figure 7, when display base plate 2 is bent in one direction, adjacent one section close to bottom plate 21a side
Module material 22a the first protuberance 221a and another section of module material 22a the second depressed part 224a are bonded to each other, and remote
One section of module material 22a of bottom plate 21a side the first depressed part 222a and another section of module material 22a the second protuberance
223a separation produces gap 4a.
Reference picture 8, when display base plate 2 is bent in another direction, adjacent one of the side away from bottom plate 21a
Section module material 22a the first depressed part 222a and another section of module material 22a the second protuberance 223a are bonded to each other, and are leaned on
One section of module material 22a of nearly bottom plate 21a side the first protuberance 221a and another section of module material 22a the second depression
224a separation in portion produces gap 4b.
It follows that no matter display base plate 2 is bent from a direction or from another opposite direction bending, can
Ensure that two sections of adjacent module material 22a part contact surfaces are (the first protuberance 221a and the second depressed parts to contact with each other
224a is contacted or the first depressed part 222a contacts with the second protuberance 223a).Therefore, show when multistage module material 22a is formed
When showing substrate 2a one layer of electric conduction routing layer, when bending deformation occurs for display base plate 2a, two sections of module materials of the connection that contacts with each other
Material 2 can reduce module material 22a stress concentration by gap 4a or 4b so that between adjacent two sections of module materials 22a
Stress is released, and adds the overall anti-bending strength of flexible display apparatus, reduces the wind of flexible display apparatus fracture failure
Danger；Simultaneously as two sections of adjacent module material 22a always have part contact surface and contacted with each other, conduction is also also ensured
The normally of routing layer.But as previously shown, multistage module material 22a can also form display base plate 2a one layer of insulation
Layer, the embodiment of the present invention forms the insulating barrier of display base plate 2 to multistage module material 22a or electric conduction routing layer does not do specific limit
It is fixed.
Fig. 9 show the structural representation of the display base plate for the flexible display apparatus that one embodiment of the invention is provided.
As shown in figure 9, each module material 22b and adjacent module material 22b contact surface may include it is multiple interlaced with each other
The multiple protuberance 221b and multiple depressed part 222b of arrangement.
Protuberance 22b and depressed part 222b shape can be for ease of the rectangles of processing and fabricating.It should be appreciated, however, that protrusion
Portion 22b and depressed part 222b is alternatively trapezoidal or other shapes, shape of the embodiment of the present invention to protuberance 22b and depressed part 222b
Shape is not specifically limited.
Figure 10 show the structural representation of the display base plate for the flexible display apparatus that one embodiment of the invention is provided.
As shown in Figure 10, display base plate 2c provided in an embodiment of the present invention can further comprise being formed at multistage module material
The light refraction layer 5 on 22c surfaces.Light refraction layer 5 can include the index ellipsoid 52 of first refractive region 51 and second, the second folding
Penetrate region 52 and cover contact position between adjacent two sections of module materials 22c.Wherein, be configured to will be adjacent for the second index ellipsoid 52
The refractive index for the display light that contact position between two sections of module material 22c is appeared is adjusted to the institute of first refractive region 51 thoroughly
The display light gone out is identical.
By setting above-mentioned light refraction layer 5, the refractive index of the display light of whole flexible display apparatus can be caused to protect
Hold consistent.In addition, 5 couples of multistage module material 22c of light refraction layer may also function as certain protective action.Implement in the present invention one
In example, light refraction layer 5 can be for ease of the optical bonding glue-line of coating, or other materials, the present invention roll over to optics
The material for penetrating layer 5 is not especially limited.
Figure 11 show the structural representation of the display base plate for the flexible display apparatus that one embodiment of the invention is provided.
As shown in figure 11, display base plate 2 provided in an embodiment of the present invention may include：Bottom plate 201, source electrode 208, drain electrode 211,
Grid 201, anode 206 and the cushion 202 being successively set on substrate 201, active layer 209, the and of the first insulating barrier 203
Second insulating barrier 204, flatness layer 205 and pixel defining layer 207.Grid 14 is prepared on the first insulating barrier 203, and exhausted by second
Edge layer 204 is covered.First insulating barrier 203 and the second insulating barrier 204 may include two perforates for being through to active layer 209.Leakage
Pole 211 and source electrode 208 are prepared in two perforates respectively, and form Ohmic contact with active layer 209 respectively.Anode 206 is set
Put in drain electrode 211, be connected through flatness layer 205 with pixel defining layer 207.The source electrode 208 mentioned in the embodiment of the present invention,
Any layer electric conduction routing layer in drain electrode 211, grid 201, anode 206 and active layer 209 can be used in the embodiment of the present invention
The connection that is in contact with each other multistage module material structure.Cushion 202, active layer 209, the insulation of the first insulating barrier 203, second
Any layer insulating in layer 204, flatness layer 205 and pixel defining layer 207 also can be used in the embodiment of the present invention each other
Contact the multistage module material structure of connection.The embodiment of the present invention multistage module material is formed display base plate 2 it is specific which
One layer is not specifically limited.
It should be appreciated that the first and second grade determiners mentioned in the embodiment of the present invention, just to more clearly describe
The technical scheme of the embodiment of the present invention uses, can not be limiting the scope of the invention.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Within god and principle, any modification for being made, equivalent substitution etc., it should be included in the scope of the protection.
Claims (10)
- A kind of 1. flexible display apparatus, it is characterised in that including：Display base plate；AndBe arranged on inside the display base plate, above or below same layer and the multistage module material for the connection that is in contact with each other；Wherein, adjacent two sections of respective contact surfaces of module material of connection and the bending axle of the flexible display apparatus are contacted It is parallel.
- 2. flexible display apparatus according to claim 1, it is characterised in that the contact surface between the multistage module material It is arranged in the preset curve region of the flexible display apparatus.
- 3. flexible display apparatus according to claim 1, it is characterised in that the multistage module material forms the display One layer of electric conduction routing layer inside substrate.
- 4. flexible display apparatus according to claim 3, it is characterised in that contact adjacent two sections of module materials of connection Expect that respective contact surface includes at least one protuberance and at least one depressed part；Wherein, at least one protuberance of a module material in the adjacent two sections module materials is filled respectively At least one depressed part of another module material.
- 5. flexible display apparatus according to claim 3, it is characterised in that at least one protuberance is shaped as square Shape.
- 6. flexible display apparatus according to claim 1, it is characterised in that the multistage module material forms the display Inside substrate, above or below a layer insulating.
- 7. flexible display apparatus according to claim 6, it is characterised in that the layer insulating above the display base plate Including it is following it is several layers of in one kind：Layer of polarizer, optical cement layer, touch sensitive layer and cover layer；A layer insulating below the display base plate include it is following it is several layers of in one kind：Support membrane and screen layer.
- 8. flexible display apparatus according to claim 1, it is characterised in that further comprise：The light refraction layer of the multistage module material surface is formed at, wherein the light refraction layer includes first refractive region And second index ellipsoid, wherein second index ellipsoid covers the contact position between the multistage module material；The refractive index of wherein described second index ellipsoid is configured to, and the contact position between the multistage module material is appeared The refractive index of display light be adjusted to identical with the display light that the first refractive region is appeared.
- 9. flexible display apparatus according to claim 8, it is characterised in that the light refraction layer is optical adhesive Layer.
- 10. flexible display apparatus according to claim 1, it is characterised in that the display base plate is oled display substrate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775898.3A CN107516472B (en) | 2017-08-31 | 2017-08-31 | Flexible display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775898.3A CN107516472B (en) | 2017-08-31 | 2017-08-31 | Flexible display device |
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| CN107516472A true CN107516472A (en) | 2017-12-26 |
| CN107516472B CN107516472B (en) | 2021-05-07 |
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| CN201710775898.3A Active CN107516472B (en) | 2017-08-31 | 2017-08-31 | Flexible display device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108877512A (en) * | 2018-05-31 | 2018-11-23 | 昆山国显光电有限公司 | A kind of display panel and display device |
| CN109147573A (en) * | 2018-10-09 | 2019-01-04 | 武汉华星光电半导体显示技术有限公司 | A kind of display device, cover sheet |
| WO2019128148A1 (en) * | 2017-12-29 | 2019-07-04 | 昆山国显光电有限公司 | Module structure and flexible display device comprising module structure |
| CN110969939A (en) * | 2018-09-28 | 2020-04-07 | 上海和辉光电有限公司 | Foldable display screen and display device |
| WO2020097910A1 (en) * | 2018-11-16 | 2020-05-22 | 深圳市柔宇科技有限公司 | Flexible display screen and manufacturing method therefor, and flexible display device |
| CN111312075A (en) * | 2020-02-28 | 2020-06-19 | 云谷（固安）科技有限公司 | Display device, manufacturing method thereof, display screen and cover plate |
| CN112863354A (en) * | 2021-01-22 | 2021-05-28 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN113744636A (en) * | 2020-05-31 | 2021-12-03 | 华为技术有限公司 | Display module and electronic terminal |
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Application publication date: 20171226 Assignee: Yungu (Gu'an) Technology Co., Ltd.|Bazhou Yungu Electronic Technology Co., Ltd.|Kunshan Institute of technology new flat panel display technology center Co., Ltd Assignor: Kunshan Guo Xian Photoelectric Co., Ltd. Contract record no.: X2019990000156 Denomination of invention: Secondary display integration in flexible display devices License type: Common License Record date: 20191030 |
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