CN209461079U - Flexible cover plate, display module and display device - Google Patents

Flexible cover plate, display module and display device Download PDF

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Publication number
CN209461079U
CN209461079U CN201821696713.6U CN201821696713U CN209461079U CN 209461079 U CN209461079 U CN 209461079U CN 201821696713 U CN201821696713 U CN 201821696713U CN 209461079 U CN209461079 U CN 209461079U
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China
Prior art keywords
layer
buffer layer
flexible
cover plate
flexible cover
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CN201821696713.6U
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Chinese (zh)
Inventor
盛翠翠
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Yungu Guan Technology Co Ltd
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Yungu Guan Technology Co Ltd
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Priority to CN201821696713.6U priority Critical patent/CN209461079U/en
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Abstract

The utility model provides a kind of flexible cover plate, display module and display device, solves in the prior art that display screen pit, blackspot occurs at falling sphere or falling position of starting to write under the impact that falling sphere is perhaps started to write, and then the problem of cause display to be failed.The flexible cover plate, including flexible glass layer and the buffer layer being layered on flexible glass layer, display screen is under falling sphere or the impact started to write, buffer layer in flexible cover plate can effectively buffer stress, impact of the impact force to flexible glass layer to reduce falling sphere or start to write, and then reduce the probability of the failure of display screen caused by glass fragmentation faced.

Description

Flexible cover plate, display module and display device
Technical field
The utility model relates to field of display technology, and in particular to flexible cover plate, the display module including the flexible cover plate (for example, Flexible Displays mould group) and display device (for example, flexible display apparatus) including the display module.
Background technique
With the development of display technology, nowadays display device application field is very extensive, therefore for shielding body items It can require also to gradually rise.Flexible screen has the characteristics that bent, and using the flexibility of display device, people can be by display device It is bent or is folded, offered convenience to carry and use display device to people.
But flexible display screen in the prior art is easy to cause under the impact of weight (for example, falling sphere or start to write) Display failure.
Utility model content
As described in background, flexible display screen in the prior art is easy in falling sphere or shock-testing of starting to write Now show failure the problem of, inventor it has been investigated that, the basic reason for this problem occur is, existing flexible display screen Use ultra-thin glass as surface structure, ultra-thin glass while playing certain supporting role, also protection lower section as TP, partially Each film layer structures such as mating plate, PI film layer are injury-free.But it is attributed to that ultra-thin glass is relatively thin, intensity is low and brittleness is poor, is easy Cause display screen under heavy impact, such as falling sphere or start to write under impact, because being located at the film layer at pen tip or sphere falling position It cracks, and it is bad etc. abnormal to occur pit, blackspot at pen tip or sphere falling position, and then display is caused to be lost Effect.
In view of this, the present invention provides a kind of flexible cover plate, solves and shield body in falling sphere in the prior art or fall The problem of under the impact of pen, there is pit, blackspot at falling sphere or falling position of starting to write, and then display caused to be failed.
One aspect according to the present utility model, the utility model embodiment provide a kind of flexible cover plate, comprising:
Flexible glass layer;And
Buffer layer is layered on the flexible glass layer.
In one embodiment, the flexible cover plate includes at least one first cascade structure, the first cascade structure packet It includes:
One layer of flexible glass layer and one layer of buffer layer being layered on the flexible glass layer, the buffering The outer layer of flexible glass layer described in ratio of the layer as the flexible cover plate, or
The one layer of flexible glass layer and at least two layers buffer layer, the flexible glass layer being superposed are folded in Between the buffer layer.
In one embodiment, the flexible cover plate includes multiple first cascade structures.
In one embodiment, the buffer layer includes at least one layer of oxide membranous layer,
When the buffer layer includes at least two layers of oxide membranous layer, the oxide membranous layer of adjacent two layers is adopted Material is different.
In one embodiment, the material of the oxide membranous layer uses titanium dioxide, zirconium dioxide, silica, tantalum oxide One or more of combination.
In one embodiment, the buffer layer includes at least one layer of oxide membranous layer, the buffer layer with a thickness of 20nm~300nm.
In one embodiment, the buffer layer includes doping buffer layer, the doping buffer layer include Optical transparent adhesive with And it is entrained in the hard filler fragment in the Optical transparent adhesive.
In one embodiment, the hard filler fragment is in the plane vertical with the thickness direction of the flexible cover plate Projection covering it is described doping buffer layer whole surface.
In one embodiment, the buffer layer further comprises optical clear glue-line, and the optical clear glue-line setting exists That side close to the flexible glass layer of the doping buffer layer.
In one embodiment, the doping buffer layer and the optical clear glue-line constitute the second stepped construction, described slow Rushing layer includes multiple second stepped constructions being stacked.
In one embodiment, the material of the hard filler fragment uses ultra-thin glass.
In one embodiment, the buffer layer include doping buffer layer, the buffer layer with a thickness of 80um~100um.
In one embodiment, the optical clear glue-line with a thickness of 30um~60um.
In one embodiment, which is characterized in that the flexible glass layer is ultra-thin glass layer.
Another aspect according to the present utility model, the utility model embodiment provide a kind of display module comprising aforementioned Any flexible cover plate.
Another side according to the present utility model, the utility model embodiment provide a kind of display device comprising aforementioned aobvious Show mould group.
Flexible cover plate according to the present utility model including flexible glass layer and is stacked slow on flexible glass layer Layer is rushed, when flexible cover plate is applied in display module, which is arranged in that side of the light emission direction of functional layer, when aobvious For display screen under falling sphere or the impact started to write, the buffer layer in flexible cover plate can effectively buffer stress, fall to reduce The impact of ball or the impact force started to write to the flexible glass layer in flexible cover plate thereby reduces and shields body caused by glass fragmentation faced The probability of failure.
Detailed description of the invention
FIG. 1 to FIG. 2 is for the stacking between the buffer layer for showing the flexible cover plate of the utility model and flexible glass layer The schematic diagram of relationship.
Fig. 3~Fig. 8 is the structural schematic diagram for showing the buffer layer in the flexible cover plate of the utility model.
Fig. 9~Figure 11 is the structural schematic diagram for showing the display module of the utility model.
Specific embodiment
Hereinafter reference will be made to the drawings is described in detail the utility model.
As shown in Figure 1, the flexible cover plate of an embodiment of the present invention includes flexible glass layer 12 and is stacked soft Buffer layer 11 on property glassy layer 12.When being applied in display screen according to the flexible cover plate of the utility model embodiment, soft Property display screen started to write or the impact of falling sphere under, the buffer layer 11 in flexible cover plate can buffer impact force, from And it reduces and starts to write or impact of the falling sphere to flexible glass layer 12, and then reduce flexible display screen and cause to show because of glass fragmentation faced The probability of failure.
In one embodiment, flexible cover plate includes a first cascade structure, wherein first cascade structure can be one layer Flexible glass layer 12 and the buffer layer 11 being superposed on flexible glass layer 12, as shown in Figure 1.First cascade structure can be with For the one layer of flexible glass layer 12 and two buffer layer 11 being superposed, wherein flexible glass layer 12 is folded in two buffer layer 11 Between, as shown in Figure 2.In this case, when flexible cover plate is applied in display screen, display screen is in falling sphere or starts to write Under impact, buffer layer 11 further can effectively buffer stress, start to write or falling sphere is to flexible glass layer 12 to reduce Impact force, reduce glass fragmentation faced cause display screen fail probability.
In a further embodiment, flexible cover plate includes multiple first cascade structures, when the flexible cover with the structure Plate is applied in display screen, display screen when by falling sphere or the impact started to write, impact force can by Multistage dispersion, thus into One step, which reduces, starts to write or falling sphere is to the impact force of flexible glass layer 12, and more reducing glass fragmentation faced causes display screen to fail Probability.
For this entirety of buffer layer 11, in an embodiment of the utility model, buffer layer 11 may include doping buffering Layer 111, wherein doping buffer layer 111 includes that Optical transparent adhesive and the multiple hard fillers being entrained in Optical transparent adhesive are broken Piece 113, as shown in Fig. 3~Fig. 5.In this case, the multiple hard filler fragments being entrained in doping buffer layer 111 113 have certain hardness and impact resistance, when being applied in display screen with this flexible cover plate, display screen in falling sphere or Under the impact that person starts to write, buffer layer 11 can not only effectively buffer stress, and also can ensure that loss will not involve to slow Rush the structure of 11 lower section of layer.
Optical transparent adhesive (hereinafter referred to as OCA) have colorless and transparent, light transmission rate 90% or more, adhesive strength it is good, can Under room temperature or medium temperature solidification and cure shrinkage it is small the features such as.It is mixed by the way that hard filler fragment 113 to be entrained in OCA Miscellaneous buffer layer 111, OCA can not only bond hard filler fragment 113, also, by the setting of OCA, work as flexible display screen When cover board is by external impacts, OCA also can be absorbed and discharge part external force, start to write or falling sphere is to soft to more reduce Property glassy layer 12 impact force, further reduce glass fragmentation faced cause display screen fail probability.
In a further embodiment, multiple hard filler fragments 113 are in regular array in doping buffer layer 111, Arrangement mode can be a line, as shown in Figure 3, or multirow, and adjacent rows are parallel to each other and staggered, such as Fig. 4 It is shown.In this case, it when the flexible cover plate with the doping buffer layer 11 is applied in display screen, is starting to write or is falling Under the impact of ball, it can then delay step by step on the thickness direction of flexible display screen in the hard filler fragment 113 of plurality of rows Punching starts to write perhaps falling sphere to the impact force of flexible display screen and then significantly more efficient buffering falling sphere or can start to write to flexible glass The impact force of glass layer 12 reduces the probability that display screen caused by glass fragmentation faced fails.
In a further embodiment, multiple hard filler fragments 113 with the light emission direction (thickness of flexible cover plate Direction) the projection covering doping buffer layer 111 in vertical plane whole surface.In this case, when with this When the flexible cover plate of structure is applied in display screen, no matter falling sphere or start to write and fall in any position of display screen, when falling sphere or When the impact force that person starts to write is transmitted along the opposite direction of light emission direction, the buffering of hard filler fragment 113 will receive, To reduce flexible glass layer 12 by impact force the probability of fragmentation, thereby reduce display screen causes because of glass fragmentation faced Aobvious non ageing probability.
For realizing that projection covering doping of multiple hard filler fragments 113 in the plane vertical with light emission direction is slow The mode of the whole surface of layer 111 is rushed, it can shape according to hard filler fragment 113 and multiple hard filler fragments 113 arrangement in doping buffer layer 111 is designed.
It should be appreciated that the shape of hard filler fragment 113 can be regular shape, such as parallelogram, circle, three It is angular etc., it can also be irregular shape, as long as hard filler fragment 113 can be entrained in buffer layer 111 and have one Fixed hardness and impact resistance.
In a further embodiment, the material of hard filler fragment 113 is ultra-thin glass, ultra-thin glass it is transparent and With certain hardness.
In a further embodiment, buffer layer 11 includes doping buffer layer 111, wherein doping in doping buffer layer 111 When having multiple hard filler fragments 113, buffer layer with a thickness of 80um~100um, in this case, can either guarantee to delay The impact force for rushing 11 pairs of falling sphere of layer or starting to write plays certain buffer function, additionally it is possible to guarantee the thickness of flexible display screen cover board It will not be very big.
In a further embodiment, buffer layer 11 further comprises OCA layer 112, and the wherein setting of OCA layer 112 is being mixed That side of the close flexible glass layer 12 of miscellaneous buffer layer 111, as shown in Figure 6.In this case, when the flexibility with the structure When cover board is applied in display screen, since the underface of doping buffer layer 111 is provided with one layer of OCA layer 112, in falling sphere or fall When pen impact flexible display screen, after 111 disperses impact forces of doping buffer layer doped with hard filler fragment 113, OCA layers 112 can also further cushion impact forces, so as to guarantee that impact force will not involve the flexible glass layer 12 into cover board, And then reduce the probability of display screen failure.
In a further embodiment, adulterates buffer layer 111 and OCA layer 112 constitutes the second stepped construction, buffer layer 11 this entirety may include multiple the second stepped constructions being stacked, as shown in Figure 7.When the flexible cover plate with the structure When applying in display screen, falling sphere or start to write impact flexible display screen when, multiple second stepped constructions can buffer step by step Impact force, and then can more reduce the fragmentation probability of flexible glass layer 12, and then caused by reducing display screen because of glass fragmentation faced Aobvious non ageing probability.
In a further embodiment, OCA layer 112 in buffer layer 11 with a thickness of 30um~60um.This In the case of, OCA layer 112 can either play the buffer function to impact force, additionally it is possible to reserve and can adulterate for doping buffer layer 111 The space of hard filler.
For this entirety of buffer layer 11, in another embodiment of the utility model, buffer layer 11 includes at least one layer of oxygen Compound film layer 114, as shown in Figure 8.In this case, the hardness of oxide membranous layer 114 is stronger, has certain impact resistance Property, when starting to write or ball falling impact flexible display screen, oxide membranous layer 114 can play certain buffering to impact force and make With reducing impact of the impact force to flexible glass layer 12, to reduce the fragmentation probability of flexible glass layer 12, and then reduce aobvious Display screen is because showing non ageing probability caused by glass fragmentation faced.
In a further embodiment, when buffer layer 11 includes at least two layers of oxide membranous layer 114, two layers adjacent of oxidation Material used by object film layer 114 is different, as shown in Figure 8.
In a further embodiment, the material of oxide membranous layer 114 can be titanium dioxide, zirconium dioxide, oxidation The combination of one or more of silicon, tantalum oxide.
In a further embodiment, buffer layer includes at least one layer of oxide membranous layer 114, wherein the thickness of buffer layer For 20~300nm, in this case, the impact force that buffer layer can not only buffer falling sphere or start to write, additionally it is possible to so that soft The thickness of property display screen cover board increases less for thickness when being not provided with buffer layer.
According to the flexible cover plate of the utility model embodiment, including at least one layer of buffer layer 11 being superposed and at least one Layer flexible glass layer 12, when applying in display screen with the flexible cover plate of the structure, display screen is in falling sphere or starts to write Under impact, the buffer layer 11 in flexible cover plate can effectively buffer stress, start to write or falling sphere is to flexible glass to reduce The impact force of glass layer 12 reduces the probability that glass fragmentation faced causes display screen to fail.
On the other hand, the utility model embodiment also provides a kind of display module, which includes being stacked Functional layer 20 and cover layer 10, as shown in Figure 9.Functional layer 20 can be the oled layer for example including luminescent layer etc..Cover layer 10 structure uses the structure of the flexible cover plate as described in aforementioned.According to the display module of the utility model embodiment, work as display Screen is started to write or when the impact of falling sphere, and the buffer layer 11 in cover layer 10 can buffer impact force, to reduce It starts to write or impact of the falling sphere to flexible glass layer 12, and then reduce flexible display screen to lead to aobvious non ageing because of glass fragmentation faced Probability.
For this entirety of display module, in an embodiment of the utility model, the structure of display module can be such as Figure 10 Shown situation, that is, display module include the flexible base board 8 for being sequentially overlapped setting, light emission drive circuit layer 6, functional layer 20, partially Mating plate 4, OCA layer 7, touch control layer 3 and cover layer 10.One layer of OCA layer 7 is also set up between touch control layer 3 and cover layer 10.Cover layer 10 include flexible glass layer 12, the buffer layer 11 being cascading.Buffer layer 11 includes the OCA layer 112 for being sequentially overlapped setting With inside doped with the doping buffer layer 111 of multiple hard filler fragments 113.Since cover layer includes the flexibility being stacked Glassy layer 12 and the buffer layer 11 being superposed on flexible glass layer 12, buffer layer 11 include the OCA layer for being sequentially overlapped setting 112 and the internal doping buffer layer 111 doped with multiple hard filler fragments 113, when display screen by falling sphere or is started to write Impact when, hard filler fragments 113 multiple first buffer impact force, when impact force continuation transmit down when, OCA 112 pairs of impact force of layer further buffer, and thus greatly reduce the impact force reached on flexible glass layer 12, and then protect soft Property glassy layer 12 is not smashed by impact force, is protected the functional layer in display screen, is reduced the display failure probability of display screen.
For this entirety of display module, what the structure of cover layer 10 can be as described above includes being cascading Flexible glass layer 12, buffer layer 11, buffer layer 11 include the OCA layer 112 for being sequentially overlapped setting and inside doped with multiple hard The doping buffer layer 111 of filler fragment 113.However the utility model embodiment is not limited to this, the cover board in display module The structure of layer 10 can also using any structure of flexible cover plate as described in aforementioned, such as wherein cover layer 10 include according to The secondary flexible glass layer 12 and buffer layer 11 being stacked, wherein buffer layer 11 includes one layer of oxide membranous layer 114, such as Figure 11 institute Show.
It should be appreciated that can also include other films in display module other than including functional layer 20 and cover layer 10 Layer, such as the structure that display module can be as shown in Figure 10, acceptable structure as shown in figure 11, the utility model embodiment pair The type of also included film layer is not construed as limiting other than functional layer 20 and cover layer 10 in display module, as long as can satisfy Display module can work normally.
In another aspect, the utility model also provides a kind of display device, which includes above-mentioned display module.Root According to the display device of this hair utility model, due to the presence of the buffer layer in display module cover layer, when display screen is started to write Or falling sphere impact when, buffer layer can buffer impact force, to reduce impact force to display screen cover plate layer In flexible glass layer impact, thereby reducing display screen leads to aobvious non ageing probability because of glass fragmentation faced.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, made any modification, equivalent replacement etc. should be included in the protection of the utility model Within the scope of.

Claims (8)

1. a kind of flexible cover plate characterized by comprising
Flexible glass layer;And
Buffer layer is layered on the flexible glass layer;
The buffer layer includes doping buffer layer, and the doping buffer layer includes Optical transparent adhesive and is arranged in the optical lens Hard filler fragment in gelatin, wherein the Optical transparent adhesive is for bonding the hard filler fragment.
2. flexible cover plate according to claim 1, which is characterized in that including at least one first cascade structure, described One stepped construction includes:
One layer of flexible glass layer and one layer of buffer layer being layered on the flexible glass layer, the buffer layer are made The outer layer of flexible glass layer described in ratio for the flexible cover plate, or
The one layer of flexible glass layer and at least two layers buffer layer being superposed, the flexible glass layer are folded in described Between buffer layer.
3. flexible cover plate according to claim 1, which is characterized in that the buffer layer includes at least one layer of oxidation film Layer,
When the buffer layer includes at least two layers of oxide membranous layer, used by the oxide membranous layer of adjacent two layers Material is different.
4. flexible cover plate according to claim 1, which is characterized in that the hard filler fragment with the flexible cover The whole surface of the projection covering doping buffer layer in the vertical plane of the thickness direction of plate.
5. flexible cover plate according to claim 1, which is characterized in that the buffer layer further comprises Optical transparent adhesive That side close to the flexible glass layer of the doping buffer layer is arranged in layer, the optical clear glue-line.
6. flexible cover plate according to claim 5, which is characterized in that the doping buffer layer and the optical clear glue-line The second stepped construction is constituted, the buffer layer includes multiple second stepped constructions being stacked.
7. a kind of display module, which is characterized in that the structure including flexible cover plate as claimed in any one of claims 1 to 6.
8. a kind of display device, which is characterized in that including display module as claimed in claim 7.
CN201821696713.6U 2018-10-18 2018-10-18 Flexible cover plate, display module and display device Active CN209461079U (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111009189A (en) * 2019-12-05 2020-04-14 武汉华星光电半导体显示技术有限公司 Cover plate, preparation method thereof and display panel
CN111128031A (en) * 2020-01-15 2020-05-08 昆山工研院新型平板显示技术中心有限公司 Flexible display cover plate and repairing method thereof, flexible display module and display device
CN111369897A (en) * 2020-04-17 2020-07-03 Oppo广东移动通信有限公司 Foldable display screen and foldable electronic equipment
CN111739416A (en) * 2020-06-19 2020-10-02 武汉华星光电半导体显示技术有限公司 Display device
CN112937012A (en) * 2021-01-18 2021-06-11 江苏新澄瑞材料科技有限公司 Flexible cover plate and processing method thereof
CN113192419A (en) * 2021-04-02 2021-07-30 武汉华星光电半导体显示技术有限公司 Display module and display device
WO2021169610A1 (en) * 2020-02-28 2021-09-02 合肥维信诺科技有限公司 Flexible display panel and display device
CN113345331A (en) * 2021-06-17 2021-09-03 合肥维信诺科技有限公司 Display module
WO2021209057A1 (en) * 2020-04-17 2021-10-21 华为技术有限公司 Flexible cover plate, flexible screen, and foldable electronic device
CN114596785A (en) * 2022-03-18 2022-06-07 合肥维信诺科技有限公司 Flexible cover plate and manufacturing method thereof, flexible display module and flexible display device
CN114774019A (en) * 2022-04-24 2022-07-22 武汉华星光电半导体显示技术有限公司 Display screen cover plate and display device
CN115019660A (en) * 2022-06-29 2022-09-06 武汉华星光电半导体显示技术有限公司 Display module and display device
CN115240540A (en) * 2021-04-22 2022-10-25 华为技术有限公司 Screen cover plate, folding screen module and electronic equipment
WO2024032462A1 (en) * 2022-08-09 2024-02-15 京东方科技集团股份有限公司 Flexible display module and rollable display apparatus

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111009189A (en) * 2019-12-05 2020-04-14 武汉华星光电半导体显示技术有限公司 Cover plate, preparation method thereof and display panel
CN111128031A (en) * 2020-01-15 2020-05-08 昆山工研院新型平板显示技术中心有限公司 Flexible display cover plate and repairing method thereof, flexible display module and display device
WO2021169610A1 (en) * 2020-02-28 2021-09-02 合肥维信诺科技有限公司 Flexible display panel and display device
CN111369897B (en) * 2020-04-17 2022-02-01 Oppo广东移动通信有限公司 Foldable display screen and foldable electronic equipment
CN111369897A (en) * 2020-04-17 2020-07-03 Oppo广东移动通信有限公司 Foldable display screen and foldable electronic equipment
CN113542459B (en) * 2020-04-17 2023-04-28 华为技术有限公司 Flexible cover plate, flexible screen and foldable electronic equipment
WO2021209057A1 (en) * 2020-04-17 2021-10-21 华为技术有限公司 Flexible cover plate, flexible screen, and foldable electronic device
CN113542459A (en) * 2020-04-17 2021-10-22 华为技术有限公司 Flexible cover plate, flexible screen and foldable electronic equipment
CN111739416A (en) * 2020-06-19 2020-10-02 武汉华星光电半导体显示技术有限公司 Display device
CN112937012A (en) * 2021-01-18 2021-06-11 江苏新澄瑞材料科技有限公司 Flexible cover plate and processing method thereof
CN113192419A (en) * 2021-04-02 2021-07-30 武汉华星光电半导体显示技术有限公司 Display module and display device
CN113192419B (en) * 2021-04-02 2022-05-27 武汉华星光电半导体显示技术有限公司 Display module and display device
CN115240540A (en) * 2021-04-22 2022-10-25 华为技术有限公司 Screen cover plate, folding screen module and electronic equipment
CN113345331A (en) * 2021-06-17 2021-09-03 合肥维信诺科技有限公司 Display module
CN114596785A (en) * 2022-03-18 2022-06-07 合肥维信诺科技有限公司 Flexible cover plate and manufacturing method thereof, flexible display module and flexible display device
CN114596785B (en) * 2022-03-18 2024-01-23 合肥维信诺科技有限公司 Flexible cover plate, manufacturing method thereof, flexible display module and flexible display device
CN114774019A (en) * 2022-04-24 2022-07-22 武汉华星光电半导体显示技术有限公司 Display screen cover plate and display device
CN115019660A (en) * 2022-06-29 2022-09-06 武汉华星光电半导体显示技术有限公司 Display module and display device
CN115019660B (en) * 2022-06-29 2023-12-01 武汉华星光电半导体显示技术有限公司 Display module and display device
WO2024032462A1 (en) * 2022-08-09 2024-02-15 京东方科技集团股份有限公司 Flexible display module and rollable display apparatus

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GR01 Patent grant
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Assignee: Bazhou Yungu Electronic Technology Co., Ltd.|Kunshan Institute of technology new flat panel display technology center Co., Ltd.|Kunshan Guoxian photoelectric Co., Ltd

Assignor: The valley (Guan) Technology Co. Ltd.

Contract record no.: X2019990000155

Denomination of utility model: Flexible cover plate, display module and display device

Granted publication date: 20191001

License type: Common License

Record date: 20191030