CN209879476U - Foldable touch panel - Google Patents
Foldable touch panel Download PDFInfo
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- CN209879476U CN209879476U CN201920436015.0U CN201920436015U CN209879476U CN 209879476 U CN209879476 U CN 209879476U CN 201920436015 U CN201920436015 U CN 201920436015U CN 209879476 U CN209879476 U CN 209879476U
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Abstract
A foldable touch panel comprises a foldable protective cover plate, an upper optical adhesive layer, a foldable touch panel, a lower optical adhesive layer and a foldable display module, wherein the upper foldable optical adhesive layer is respectively bonded with a folding area of the foldable protective cover plate and a folding area of the foldable touch panel; the lower foldable optical adhesive layer is respectively bonded with the folding area of the foldable touch panel and the folding area of the foldable display module, the optical adhesive used by the upper foldable optical adhesive layer and the lower foldable optical adhesive layer is high-performance OCA optical adhesive in the prior art, and the optical adhesive has certain fluidity after being folded or unfolded, so that the folding effect can be realized; the gel strength of the upper foldable optical adhesive layer and the gel strength of the lower foldable optical adhesive layer are both larger than 800g/cm2When can realize folding effect, be difficult for appearing each part alternate segregation's of folding screen problem, go up optical adhesive layer and only at last optical adhesive layer's folding district, lower optical adhesive layer is only at optical adhesive layer's folding district down, can reduce material cost betterly.
Description
Technical Field
The utility model relates to a touch-sensitive screen technical field especially relates to a collapsible touch panel.
Background
A foldable touch panel, i.e., a touch panel that can be folded and unfolded once, twice, three times, or more. When the foldable touch panel is used by a user, the foldable touch panel can be unfolded for use, and the foldable touch panel can be folded after the foldable touch panel is used, so that the size of the touch panel is reduced, and the foldable touch panel is convenient to carry. Compared with the traditional touch panel with a whole plane structure, the foldable touch panel can provide better use experience for users, and has larger market potential.
However, folding and expansion that collapsible touch panel need relapse in the use are folding and expansion, folding and the in-process that expands for laminating collapsible protective cover board and folding touch layer, the optical cement of folding touch layer and collapsible display module assembly of laminating can appear the condition that each part peeled off each other at the in-process of folding and expanding that relapse, and even the optical cement can silt up folding district, influences collapsible touch panel's display effect, has seriously reduced user's use and has experienced the sense.
SUMMERY OF THE UTILITY MODEL
Therefore, a foldable touch panel which can realize a folding effect, is not easy to separate components of a folding screen and can well reduce material cost is needed to be designed.
A foldable touch panel, comprising: the foldable protective cover plate, the upper optical adhesive layer, the foldable touch control plate, the lower optical adhesive layer and the foldable display module are sequentially stacked and attached together from top to bottom, and the folding area of the foldable protective cover plate, the folding area of the upper optical adhesive layer, the folding area of the foldable touch control plate, the folding area of the lower optical adhesive layer and the folding area of the foldable display module are arranged in an aligned mode;
the upper optical adhesive layer comprises an upper foldable optical adhesive layer, a first upper bonding optical adhesive layer and a second upper bonding optical adhesive layer, the upper foldable optical adhesive layer is respectively connected with the first upper bonding optical adhesive layer and the second upper bonding optical adhesive layer, the upper foldable optical adhesive layer is positioned in a folding area of the upper optical adhesive layer, and the upper foldable optical adhesive layer is respectively bonded with the folding area of the foldable protective cover plate and the folding area of the foldable touch control plate;
the lower optical adhesive layer comprises a lower foldable optical adhesive layer, a first lower bonding optical adhesive layer and a second lower bonding optical adhesive layer, the lower foldable optical adhesive layer is respectively connected with the first lower bonding optical adhesive layer and the second lower bonding optical adhesive layer, the lower foldable optical adhesive layer is positioned in a folding area of the lower optical adhesive layer, and the lower foldable optical adhesive layer is respectively bonded with the folding area of the foldable touch control plate and the folding area of the foldable display module.
In one embodiment, the upper foldable optical adhesive layer, the first upper bonding optical adhesive layer and the second upper bonding optical adhesive layer are integrally formed.
In one embodiment, the lower foldable optical adhesive layer, the first lower adhesive optical adhesive layer and the second lower adhesive optical adhesive layer are integrally formed.
In one embodiment, the foldable protective cover is a CPI foldable protective cover.
In one embodiment, the foldable display module is a foldable AMOLED display module.
In one embodiment, the thickness of the upper optical glue layer is 50-200 μm; the thickness of the lower optical adhesive layer is 70-240 μm.
In one embodiment, the gel strength of the upper foldable optical adhesive layer and the gel strength of the lower foldable optical adhesive layer are both greater than 800g/cm2(ii) a The first upper bonding optical adhesive layer, the second upper bonding optical adhesive layer, the first lower bonding optical adhesive layer and the second lower bonding optical adhesive layerThe gel strength is more than 500g/cm2。
In one embodiment, the touch electrode of the foldable touch layer is a metal mesh touch electrode, a graphene touch electrode or a nano-silver touch electrode.
In one embodiment, the upper foldable optical adhesive layer and the lower foldable optical adhesive layer have a transmittance of no less than 90%.
The foldable touch panel is provided with a foldable protective cover plate, an upper optical adhesive layer, a foldable touch panel, a lower optical adhesive layer and a foldable display module, wherein the upper optical adhesive layer comprises an upper foldable optical adhesive layer, a first upper bonding optical adhesive layer and a second upper bonding optical adhesive layer, and the upper foldable optical adhesive layer is bonded with a folding area of the foldable protective cover plate and a folding area of the foldable touch panel respectively; the lower optical adhesive layer comprises a lower foldable optical adhesive layer, a first lower adhesive optical adhesive layer and a second lower adhesive optical adhesive layer, the lower foldable optical adhesive layer is respectively adhered to the folding area of the foldable touch panel and the folding area of the foldable display module, the optical adhesive used by the upper foldable optical adhesive layer and the lower foldable optical adhesive layer is high-performance OCA optical adhesive in the prior art, and has certain fluidity after being folded or unfolded, so that the folding effect can be realized; the gel strength of the upper foldable optical adhesive layer and the gel strength of the lower foldable optical adhesive layer are both larger than 800g/cm2The optical adhesive layer is bonded on the first surface, the optical adhesive layer is bonded on the second surface, the optical adhesive layer is bonded on the first surface and the second surface, the gel strength of the optical adhesive layer is larger than 500g/cm, the upper optical adhesive layer is bonded with the foldable protective cover plate and the foldable touch control plate together in a more firm bonding mode, the lower optical adhesive layer is bonded with the foldable touch control plate and the foldable display module together in a more firm bonding mode, the problem that all parts of the foldable screen are separated from each other is solved, the upper optical adhesive layer is only in the folding area of the upper optical adhesive layer, the lower optical adhesive layer is only in the folding area of the lower optical adhesive layer, and the upper optical adhesive layer and the lower optical adhesive layer are compared with the whole optical adhesive layerAnd by adopting the foldable optical cement, the material cost can be well reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a foldable touch panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a foldable touch panel according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of an optical adhesive layer of the foldable touch panel shown in fig. 2.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Please refer to fig. 1, which is a schematic structural diagram of a foldable touch panel a according to an embodiment of the present invention, the foldable touch panel a includes: collapsible protective cover plate 100, last optical glue layer 200, collapsible touch-control board 300, lower optical glue layer 400 and collapsible display module assembly 500, collapsible protective cover plate 100 go up optical glue layer 200 collapsible touch-control board 300 optical glue layer 400 reaches collapsible display module assembly 500 is from top to bottom in proper order range upon range of attached together, namely, collapsible protective cover plate 100 attached in go up on optical glue layer 200, go up optical glue layer 200 attached in on collapsible touch-control board 300, collapsible touch-control board 300 attached in on lower optical glue layer 400, lower optical glue layer 400 attached in on collapsible display module assembly 500. The folding area of the foldable protective cover plate 100, the folding area of the upper optical adhesive layer 200, the folding area of the foldable touch panel 300, the folding area of the lower optical adhesive layer 400, and the folding area of the foldable display module 500 are aligned with each other, and the folding area of the foldable protective cover plate, the folding area of the upper optical adhesive layer, the folding area of the foldable touch panel, the folding area of the lower optical adhesive layer, and the folding area of the foldable display module can all achieve folding and unfolding effects.
Preferably, the foldable protective cover plate is a CPI foldable protective cover plate; for example, the foldable display module is a foldable AMOLED display module; for example, the touch electrode of the foldable touch layer is a metal mesh touch electrode, a graphene touch electrode or a nano-silver touch electrode.
Preferably, the thickness of the upper optical glue layer is 50-200 μm; the thickness of the lower optical adhesive layer is 70-240 μm.
Referring to fig. 1, the upper optical adhesive layer 200 includes an upper foldable optical adhesive layer 210, a first upper adhesive optical adhesive layer 220 and a second upper adhesive optical adhesive layer 230, the upper foldable optical adhesive layer 210 is respectively connected to the first upper adhesive optical adhesive layer 220 and the second upper adhesive optical adhesive layer 230, the upper foldable optical adhesive layer 210 is located in a folding area of the upper optical adhesive layer 200, and the upper foldable optical adhesive layer 210 is respectively bonded to the folding area of the foldable protective cover 100 and the folding area of the foldable touch panel 300; the lower optical adhesive layer 400 includes a lower foldable optical adhesive layer 410, a first lower adhesive optical adhesive layer 420 and a second lower adhesive optical adhesive layer 430, the lower foldable optical adhesive layer 410 is respectively connected to the first lower adhesive optical adhesive layer 420 and the second lower adhesive optical adhesive layer 430, the lower foldable optical adhesive layer 410 is located in the folding area of the lower optical adhesive layer 400, the lower foldable optical adhesive layer 410 is respectively bonded to the folding area of the foldable touch panel 300 and the folding area of the foldable display module 500, such that the upper foldable optical adhesive layer is respectively bonded to the folding area of the foldable protective cover plate and the folding area of the foldable touch panel, the lower foldable optical adhesive layer is respectively bonded to the folding area of the foldable touch panel and the folding area of the foldable display module, and the upper foldable optical adhesive layer and the lower foldable optical adhesive layer have a certain fluidity after being folded or unfolded, the folding area of the foldable protective cover plate, the folding area of the upper optical adhesive layer, the folding area of the foldable touch control plate, the folding area of the lower optical adhesive layer and the folding area of the foldable display module can be folded after being sequentially laminated and attached.
Preferably, the upper foldable optical adhesive layer, the first upper bonding optical adhesive layer and the second upper bonding optical adhesive layer are of an integrally formed structure; for example, the lower foldable optical adhesive layer, the first lower adhesive optical adhesive layer and the second lower adhesive optical adhesive layer are integrally formed.
The upper foldable optical adhesive layer can be bent and unfolded in the folding area of the upper optical adhesive layer, and the lower foldable optical adhesive layer can be bent and unfolded in the folding area of the lower optical adhesive layer.
It should be particularly noted that the optical adhesives used for the first upper bonding optical adhesive layer, the second upper bonding optical adhesive layer, the first lower bonding optical adhesive layer and the second lower bonding optical adhesive layer may be common optical adhesives, and these common optical adhesives may be optical adhesives of mitsubishi G6.2, model number, mitsubishi OCA optical adhesive agency ltd; the optical adhesive can also be an optical adhesive with the model number of CS9826US, manufactured by Shenzhen Ridong optics Limited (Futian division); of course, the selection of the common optical adhesive is not limited to the examples given herein, and those skilled in the art can also adopt other common optical adhesives according to actual situations, and only need to ensure that the basic functions of achieving the basic bonding function and the light transmittance between the two layers of structures in the touch panel are achieved. Furthermore, the optical cement used by the upper foldable optical cement layer and the lower foldable optical cement layer is a high-performance foldable OCA optical cement in the prior art, the high-performance OCA optical cement is a key for realizing the foldable screen, is mainly used as a special adhesive for cementing transparent optical elements (such as cementing of an OLED screen and a CPI cover plate), has the characteristics of colorless transparency, light transmittance of over 99 percent, good cementing strength, certain fluidity after folding or unfolding, capability of being cured at room temperature or middle temperature, small curing shrinkage and the like. The folding position of the folding screen needs to bear 20 ten thousand folds without problems, so that the adopted OCA glue has to bear more than 20 ten thousand folds without affecting the function, and the adopted OCA glue has certain fluidity and needs to keep viscosity in the folding and spreading processes, so the technical difficulty is greatly improved compared with the prior art, the foldable OCA optical glues can be the foldable OCA optical glues produced by US 3M and Korea Samsung SDI, wherein the foldable OCA optical glue adopted by Samsung Fold is supplied by the Korea Samsung SDI alone; certainly, the selection of the foldable OCA optical cement is not limited to the examples given herein, and those skilled in the art can also adopt other foldable OCA optical cements according to actual situations, and only need to have better fluidity, that is, better foldability, on the basis of realizing the basic optical performance, so as to solve the technical problems provided by the present application.
It should be further explained that the price of the common optical cement is 110 yuan/m2130 yuan/m2The price of the high-performance OCA optical cement used by the upper foldable optical cement layer and the lower foldable optical cement layer, namely the foldable optical cement, is 180 yuan/m2270 yuan/m2Therefore, the upper optical adhesive layer is only arranged in the folding area of the upper optical adhesive layer, that is, the upper foldable optical adhesive layer adopts foldable optical adhesive, and the lower optical adhesive layer is only arranged in the folding area of the lower optical adhesive layer, that is, the lower foldable optical adhesive layer adopts foldable optical adhesive.
Preferably, the transmittance of each of the upper foldable optical adhesive layer and the lower foldable optical adhesive layer is not less than 90%.
It is further noted that the gel strength of both the upper foldable optical adhesive layer and the lower foldable optical adhesive layer is greater than 800g/cm2(ii) a The gel strength of the first upper bonding optical adhesive layer, the second upper bonding optical adhesive layer, the first lower bonding optical adhesive layer and the second lower bonding optical adhesive layer is greater than 500g/cm, therefore, the upper foldable optical adhesive layer and the first upper bonding optical adhesive layer and the upper foldable optical adhesive layer and the second upper bonding optical adhesive layer can be bonded more firmly, lower collapsible optics glue film with first bonding optics glue film reaches collapsible optics glue film down with can the gluing more firm when bonding optics glue film bonds under the second, be difficult for appearing go up collapsible optics glue film respectively with first last bonding optics glue film reaches the separation problem between the bonding optics glue film on the second, and be difficult for appearing collapsible optics glue film down respectively with first bonding optics glue film reaches the separation problem between the bonding optics glue film under the second. Meanwhile, the upper foldable optical adhesive layer is respectively bonded with the folding area of the foldable protective cover plate and the folding area of the foldable touch control plate, and the lower foldable optical adhesive layerRespectively bonded with the folding area of the foldable touch control panel and the folding area of the foldable display module, i.e., the upper foldable optical adhesive layer is respectively bonded with the foldable protective cover plate and the foldable touch control panel, and the lower foldable optical adhesive layer is respectively bonded with the foldable touch control panel and the foldable display module, so that the upper foldable optical adhesive layer can be more firmly bonded with the foldable protective cover plate and the foldable touch control panel, and the lower foldable optical adhesive layer can be more firmly bonded with the foldable touch control panel and the foldable display module, respectively, so that the upper optical adhesive layer is more firmly bonded with the foldable protective cover plate and the foldable touch control panel, and the lower optical adhesive layer is more firmly bonded with the foldable touch control panel and the foldable display module, namely, the parts of the folding screen can be bonded together more firmly, so that the problem that the parts of the folding screen are separated from each other is not easy to occur while the folding effect can be realized.
The foldable touch panel is provided with a foldable protective cover plate 100, an upper optical adhesive layer 200, a foldable touch panel 300, a lower optical adhesive layer 400 and a foldable display module 500, wherein the upper optical adhesive layer 200 comprises an upper foldable optical adhesive layer 210, a first upper adhesive optical adhesive layer 220 and a second upper adhesive optical adhesive layer 230, and the upper foldable optical adhesive layer 210 is respectively adhered to a folding area of the foldable protective cover plate 100 and a folding area of the foldable touch panel 300; the lower optical adhesive layer 400 includes a lower foldable optical adhesive layer 410, a first lower adhesive optical adhesive layer 420, and a second lower adhesive optical adhesive layer 430, the lower foldable optical adhesive layer 410 is respectively adhered to the folding area of the foldable touch panel 300 and the folding area of the foldable display module 500, the optical adhesives used by the upper foldable optical adhesive layer and the lower foldable optical adhesive layer are high-performance OCA optical adhesives in the prior art, and have certain fluidity after being folded or unfolded, so that the folding effect can be realized; the gel strength of the upper foldable optical adhesive layer and the gel strength of the lower foldable optical adhesive layer are both larger than 800g/cm2The utility model discloses a foldable display screen, including collapsible display module, upper optical glue layer, lower optical glue layer and lower optical glue layer, the first optical glue layer that bonds reaches under the second the gel strength that bonds optical glue layer all is greater than 500g/cm, upper optical glue layer with collapsible protective cover board reaches collapsible touch-control board bonds more firmly together, lower optical glue layer with collapsible touch-control board reaches collapsible display module group bonds more firmly together, when can realize folding effect, is difficult for appearing the problem of each parts alternate segregation of folding screen, upper optical glue layer is only the folding zone of upper optical glue layer, lower optical glue layer is only the folding zone of lower optical glue layer compares upper optical glue layer reaches the whole collapsible optical glue that adopts of lower optical glue layer, can reduce material cost betterly.
In one embodiment, referring to fig. 2, a foldable touch panel includes a foldable protective cover 10, a first optical adhesive layer 20, a foldable touch layer 30, a second optical adhesive layer 40 and a foldable display module 50 stacked from top to bottom, the first optical adhesive layer 20 comprises a first foldable optical adhesive layer 201 and a first non-foldable adhesive layer 202, the first foldable optical adhesive layer 201 and the first non-foldable adhesive layer 202 are smoothly integrated, the second optical glue layer 40 comprises a second foldable optical glue layer 401 and a second non-foldable glue layer 402, the second foldable optical adhesive layer 401 and the second non-foldable adhesive layer 402 are smoothly integrated, the first layer of foldable optical adhesive 201 and the second layer of foldable optical adhesive 401 have a certain fluidity after being folded or unfolded, the first layer of foldable optical adhesive 201 and the second layer of foldable optical adhesive 401 have a relatively strong tack of greater than or equal to 800 g/cm.2The first non-folding adhesive layer 202 and the second non-folding adhesive layer 402 have an adhesive force of 500g/cm or more2。
As shown in fig. 2, one surface of the foldable protective cover 10 is attached to one surface of the first optical adhesive layer 20, the folding area of the foldable protective cover 10 is attached to the first foldable optical adhesive layer 201, the other surface of the first optical adhesive layer 20 is attached to the foldable touch layer 30, the folding area of the foldable touch layer 30 is attached to the first foldable optical adhesive layer 201, the other surface of the foldable touch layer 30 is attached to one surface of the second optical adhesive layer 40, the folding area of the foldable touch layer 30 is attached to the second foldable optical adhesive layer 401, the other surface of the second optical adhesive layer 40 is attached to the foldable display module 50, and the second foldable optical adhesive layer 401 is attached to the folding area of the foldable display module 50, a foldable touch panel of the above embodiment is formed. The foldable protective cover 10 may be a glass protective cover, a PMMA protective cover, a CPI protective cover, in the above embodiments a CPI protective cover, the touch electrode of the foldable touch layer 30 may be a metal mesh touch electrode, a graphene touch electrode or a nano-silver touch electrode, in the above embodiment, a nano-silver touch electrode, the foldable display module 50 may be an AMOLED display module, or other foldable display modules, in the above-mentioned embodiment, the AMOLED display module has the same composition structure of the first optical adhesive layer 20 and the second optical adhesive layer 40, namely, the optical adhesive comprises a foldable optical adhesive layer and a non-foldable adhesive layer, wherein the non-foldable adhesive layer is common optical adhesive, the thickness of the first optical adhesive layer 20 is 50-200 μm, the thickness of the second optical adhesive layer 40 is 70 μm to 240 μm, and the transmittances of the first optical adhesive layer and the second optical adhesive layer are both greater than or equal to 90%.
Compared with the conventional foldable touch panel, please refer to fig. 2 and fig. 3 together, the first optical adhesive layer 20 of the above-mentioned embodiment is composed of a first foldable optical adhesive layer 201 and a first non-foldable adhesive layer 202, the first foldable optical adhesive layer 201 and the first non-foldable adhesive layer 202 are in smooth transition, the second optical adhesive layer 40 is composed of a second foldable optical adhesive layer 401 and a second non-foldable adhesive layer 402, the second foldable optical adhesive layer 401 and the second non-foldable adhesive layer 402 are in smooth transition to ensure the display effect, the first foldable optical adhesive layer 201 and the second foldable optical adhesive layer 401 have certain fluidity during folding and unfolding, ensure that the foldable optical adhesive can be laid out in the folding area after folding or unfolding, ensure the display effect, the first foldable optical adhesive layer 201 and the second foldable optical adhesive layer 401 have stronger adhesive power, when the foldable touch panel is folded and unfolded, the first foldable optical adhesive layer 201 and the second foldable optical adhesive layer 401 are not separated from other components, further, the foldable protective cover plate 10, the foldable touch layer 30, the foldable display module 50 and the adhesive layer are attached to the adhesive layer through a high-precision alignment system, and the first foldable optical adhesive layer 201 and the second foldable optical adhesive layer 401 are attached to the folding area of the first foldable optical adhesive layer and the second foldable optical adhesive layer 401 in an alignment manner, so that the foldable touch panel of the embodiment is formed. In addition, the ordinary low-cost non-folding adhesive layer, namely the ordinary optical adhesive layer, is adopted in the non-folding area, so that the production cost can be reduced.
For the convenience of understanding the content of the above embodiments, the above embodiments are illustrated by folding the foldable touch panel in half, which does not represent the limitation of the present invention, the foldable touch panel can be folded in half, and can be folded and unfolded twice, three times or more, and any slight modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above embodiments are only intended to illustrate some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. A foldable touch panel, comprising: the foldable protective cover plate, the upper optical adhesive layer, the foldable touch control plate, the lower optical adhesive layer and the foldable display module are sequentially stacked and attached together from top to bottom, and the folding area of the foldable protective cover plate, the folding area of the upper optical adhesive layer, the folding area of the foldable touch control plate, the folding area of the lower optical adhesive layer and the folding area of the foldable display module are arranged in an aligned mode; it is characterized in that the preparation method is characterized in that,
the upper optical adhesive layer comprises an upper foldable optical adhesive layer, a first upper bonding optical adhesive layer and a second upper bonding optical adhesive layer, the upper foldable optical adhesive layer is respectively connected with the first upper bonding optical adhesive layer and the second upper bonding optical adhesive layer, the upper foldable optical adhesive layer is positioned in a folding area of the upper optical adhesive layer, and the upper foldable optical adhesive layer is respectively bonded with the folding area of the foldable protective cover plate and the folding area of the foldable touch control plate;
the lower optical adhesive layer comprises a lower foldable optical adhesive layer, a first lower bonding optical adhesive layer and a second lower bonding optical adhesive layer, the lower foldable optical adhesive layer is respectively connected with the first lower bonding optical adhesive layer and the second lower bonding optical adhesive layer, the lower foldable optical adhesive layer is positioned in a folding area of the lower optical adhesive layer, and the lower foldable optical adhesive layer is respectively bonded with the folding area of the foldable touch control plate and the folding area of the foldable display module.
2. The foldable touch panel of claim 1, wherein the upper foldable optical adhesive layer, the first upper adhesive optical adhesive layer, and the second upper adhesive optical adhesive layer are integrally formed.
3. The foldable touch panel of claim 1, wherein the lower foldable optical adhesive layer, the first lower adhesive optical adhesive layer, and the second lower adhesive optical adhesive layer are integrally formed.
4. The foldable touch panel of claim 1, wherein the foldable protective cover sheet is a CPI foldable protective cover sheet.
5. The foldable touch panel of claim 1, wherein the foldable display module is a foldable AMOLED display module.
6. The foldable touch panel of claim 1, wherein the upper optical glue layer has a thickness of 50-200 μ ι η;
the thickness of the lower optical adhesive layer is 70-240 μm.
7. The foldable touch panel of claim 1, wherein the gel strength of the upper and lower foldable optical adhesive layers are each greater than 800g/cm2；
The gel strength of the first upper bonding optical adhesive layer, the second upper bonding optical adhesive layer, the first lower bonding optical adhesive layer and the second lower bonding optical adhesive layer is more than 500g/cm2。
8. The foldable touch panel of claim 1, wherein the touch electrode of the foldable touch layer is a metal mesh touch electrode, a graphene touch electrode, or a nano-silver touch electrode.
9. The foldable touch panel of claim 1, wherein the upper foldable optical adhesive layer and the lower foldable optical adhesive layer have a transmittance of no less than 90%.
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| CN201920436015.0U CN209879476U (en) | 2019-04-02 | 2019-04-02 | Foldable touch panel |
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| CN201920436015.0U CN209879476U (en) | 2019-04-02 | 2019-04-02 | Foldable touch panel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114067675A (en) * | 2020-08-07 | 2022-02-18 | 北京小米移动软件有限公司 | Folding screen, maintenance method thereof and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114067675A (en) * | 2020-08-07 | 2022-02-18 | 北京小米移动软件有限公司 | Folding screen, maintenance method thereof and electronic equipment |
| CN114067675B (en) * | 2020-08-07 | 2024-05-24 | 北京小米移动软件有限公司 | Folding screen, maintenance method thereof and electronic equipment |
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