1. The utility model provides an optical transparent bonding layer laminated structure of optical panel which characterized in that is applied to between a display protection apron or a touch panel and a display module, and this laminated structure includes:

a first transparent low-adhesion adhesive layer which can be repeatedly removed and directly attached to the display protection cover plate or the touch panel;

a second transparent low-adhesion adhesive layer which can be repeatedly removed and directly adhered to the display module; and

the first optical transparent sheet body is stacked between the first transparent low-adhesion adhesive layer and the second transparent low-adhesion adhesive layer, the upper surface and the lower surface of the first optical transparent sheet body are directly coated with the optical transparent adhesive layers in a sticking way, and the two optical transparent adhesive layers are stuck with the first transparent low-adhesion adhesive layer and the second transparent low-adhesion adhesive layer in a full sticking way without air gaps;

the first transparent low-adhesion adhesive layer and the display protection cover plate or the touch panel and the second transparent low-adhesion adhesive layer and the display module are attached in a full-attaching mode, and air gaps do not exist between the first transparent low-adhesion adhesive layer and the display protection cover plate or the touch panel and between the second transparent low-adhesion adhesive layer and the display module.

2. The structure of claim 1, wherein a second optically transparent sheet is sandwiched between one of the optically transparent adhesive layers and the first transparent low-adhesion adhesive layer, and a third optically transparent sheet is sandwiched between the other of the optically transparent adhesive layers and the second transparent low-adhesion adhesive layer.

3. The optically transparent adhesive layer of claim 2, wherein the materials of the first, second and third optically transparent sheets comprise organic plastic transparent sheets, inorganic transparent sheets, organic-inorganic composite or multi-layer stack hybrid sheets.

4. The optical panel of claim 1, wherein the first low adhesion adhesive layer is replaced by the first optically transparent adhesive layer on the first optically transparent sheet and the second low adhesion adhesive layer is replaced by the second optically transparent adhesive layer under the first optically transparent sheet.

5. The optical panel optically transparent adhesive layer attachment structure of claim 1, wherein the materials of the first transparent low adhesion layer, the second transparent low adhesion layer and the optically transparent adhesive layer comprise silicone, polyurethane, acrylic, ethylene vinyl acetate, copolymer resin, epoxy plastic ester polymer or combinations thereof.

6. The optical panel of claim 3, wherein the organic plastic transparent sheet is made of polyethylene terephthalate, cyclic olefin polymer, polymethyl methacrylate, polycarbonate, polyimide, polyethylene naphthalate, cellulose triacetate, or a combination thereof.

7. The optically transparent adhesive layer attachment structure of claim 3, wherein the material of the inorganic transparent sheet comprises a silica glass material, an alumina ceramic material, an aluminosilicate material, or a combination thereof.

8. The utility model provides an optical transparent bonding layer laminated structure of optical panel which characterized in that is applied to between a display protection apron or a touch panel and a display module, and this laminated structure includes:

a first transparent low-adhesion adhesive layer which can be repeatedly removed and directly attached to the display protection cover plate or the touch panel;

a second transparent low-adhesion adhesive layer which can be repeatedly removed and directly adhered to the display module; and

the optical transparent sheet body is stacked between the first transparent low-adhesion adhesive layer and the second transparent low-adhesion adhesive layer, and no air gap exists between the optical transparent sheet body and the first transparent low-adhesion adhesive layer and between the optical transparent sheet body and the second transparent low-adhesion adhesive layer;

the first transparent low-adhesion adhesive layer is attached to the display protection cover plate or the touch panel, and the second transparent low-adhesion adhesive layer is attached to the display module in a full-attaching mode.

9. The optical panel of claim 8, wherein the first low adhesion adhesive layer is replaced by an optically transparent adhesive layer on the first transparent sheet and the second low adhesion adhesive layer is replaced by an optically transparent adhesive layer under the first transparent sheet.

10. The optically transparent adhesive layer bonded structure of claim 8, wherein the material of the optically transparent sheet comprises organic plastic transparent sheet, inorganic transparent sheet, organic-inorganic composite or multi-layer stacked hybrid sheet.

11. The optical panel of claim 8, wherein the first transparent low adhesion layer and the second transparent low adhesion layer are made of silicone, polyurethane, acrylic, ethylene vinyl acetate, copolymer resin, epoxy plastic ester polymer, or combinations thereof.

12. The optical panel of claim 10, wherein the organic plastic transparent sheet is made of polyethylene terephthalate, cyclic olefin polymer, polymethyl methacrylate, polycarbonate, polyimide, polyethylene naphthalate, cellulose triacetate, or a combination thereof.

13. The optically transparent adhesive layer attachment structure of claim 10, wherein the material of the inorganic transparent sheet comprises a silica glass material, an alumina ceramic material, an aluminosilicate material, or combinations thereof.

14. The utility model provides an optical transparent bonding layer laminated structure of optical panel which characterized in that is applied to between a display protection apron or a touch panel and a display module, and this laminated structure includes:

a transparent low-adhesion glue layer; and

the optical transparent adhesive layer is attached to the transparent low-adhesion adhesive layer, and no air gap exists between the optical transparent adhesive layer and the transparent low-adhesion adhesive layer;

wherein, the bonding structure and the display protection cover plate or the touch panel and the bonding structure and the display module are bonded in a full bonding mode without air gaps.

15. The optical panel optically transparent adhesive layer attachment structure of claim 14, wherein the material of the transparent low adhesion layer and the optically transparent adhesive layer comprises silicone, polyurethane, acrylic, ethylene vinyl acetate and co-polymerized resins thereof, epoxy plastic ester polymer or combinations thereof.

Background

With the development of microelectronic technology and the rapid popularization of intelligent 3C products, display modules with more and more functions or better performance are introduced into large outdoor public displays, household televisions, vehicle screens, game consoles, intelligent mobile phones or wearable devices. Especially, in order to improve the resolution, shorten the response time, widen the viewing angle, miniaturize, thin and light, and even curve, etc., various factories strive for breakthrough in the optical bonding (optical coupling) technology of the display surface, and provide the best display effect of the screen. Although the conventional edge lamination (edge lamination) technique uses less glue, the air gap (air gap) affects the electrical touch sensitivity and also affects the optical performance, such as increasing Newton ring (Newton ring), reflection loss, and ambient reflection light interference. Therefore, the existing technology of full lamination (also called optical bonding) can greatly reduce light reflection, light loss and dispersion, improve display brightness, resolution, contrast, and improve definition and color rendering (color rendering) effects, and the bonding strength of full lamination is higher than that of traditional Chinese character lamination, and the air gap change of the touch signal is reduced, thereby improving the accuracy of the touch function. In general, in a process of completely laminating with a protective Cover Lens (CL) or a Touch Panel (TP) on a display module such as a liquid crystal display module (LCM), an Organic Light Emitting Diode (OLED), or the like, there may be bubbles (bubbles), small dust particles in a process environment, or a local delamination (delamination) phenomenon due to process tolerance, thereby generating a lamination defect, and a process person may determine whether rework (rework) is required according to experience or actual requirement conditions. Optical Clear Adhesive (OCA), Optical Clear Resin (OCR), and thermoplastic Optical Clear Film (OCF) often used between CL, TP, and LCM, including high adhesion and low cost acrylic adhesives, can be rapidly cured and formed by pressure, Ultraviolet (UV), or heat.

However, in addition to the yellowing problem, the strong adhesion of the acryl glue causes a difficulty in reworking in the developing direction of the display device requiring thinning, and the possibility of increasing the probability of the defective piece by using the isopropyl alcohol (IPA) solvent of the chemical rework method or the plastic blade (plastic blade) of the physical rework method to remove the residual glue may decrease the overall production yield.

Therefore, how to design an optical transparent adhesive layer (OCB) bonding structure of an optical panel, especially to solve the technical problems of difficult rework, difficult removal of residual glue and difficult improvement of overall production yield, is an important issue studied by the present inventors.

Disclosure of Invention

An object of the present invention is to provide an optical transparent adhesive layer (OCB) bonding structure of an optical panel, which can improve the yield of bonding and reduce the bonding cost without using expensive bonding equipment. Meanwhile, the technical problems that reworking is difficult, residual glue is not easy to remove, and the overall production yield is difficult to improve are solved, and the purpose that the generalized full-lamination technology is used as a combination of a display and a protective cover plate or a touch panel is achieved.

In order to achieve the foregoing objective, an optical transparent adhesive layer (OCB) bonding structure of an optical panel provided in the present invention is applied between a display protection cover plate or a touch panel and a display module, and includes a first transparent low-adhesion adhesive layer, a second transparent low-adhesion adhesive layer, and a first optical transparent sheet; wherein, the first transparent low-adhesion adhesive layer can be repeatedly removed and directly adhered on the display protection cover plate or the touch panel; the second transparent low-adhesion adhesive layer is repeatedly and directly attached to the display module in a removable way; the first optical transparent sheet body is stacked between the first transparent low-adhesion adhesive layer and the second transparent low-adhesion adhesive layer, the upper surface and the lower surface of the first optical transparent sheet body are directly pasted with the optical transparent adhesive layers, the two optical transparent adhesive layers are pasted with the first transparent low-adhesion adhesive layer and the second transparent low-adhesion adhesive layer in a full-pasting mode, and no air gap exists; the first transparent low-adhesion adhesive layer and the display protection cover plate or the touch panel and the second transparent low-adhesion adhesive layer and the display module are attached in a full-attaching mode, and air gaps do not exist between the first transparent low-adhesion adhesive layer and the display protection cover plate or the touch panel and between the second transparent low-adhesion adhesive layer and the display module.

Further, a second optical transparent sheet is sandwiched between one of the optical transparent adhesive layers and the first transparent low-adhesion adhesive layer, and a third optical transparent sheet is sandwiched between the other of the optical transparent adhesive layers and the second transparent low-adhesion adhesive layer.

Further, the materials of the first, second and third optical transparent sheets include organic plastic transparent sheets, inorganic transparent sheets, organic-inorganic composite or multi-layer stacked hybrid sheets.

Further, the first transparent low-adhesion adhesive layer is replaced by the optical transparent adhesive layer on the first optical transparent sheet body, and the second transparent low-adhesion adhesive layer is replaced by the optical transparent adhesive layer under the first optical transparent sheet body.

Further, the materials of the first transparent low-adhesion adhesive layer, the second transparent low-adhesion adhesive layer and the optical transparent adhesive layer include silica gel, polyurethane adhesive, acrylic adhesive, ethylene vinyl acetate, copolymer resin, epoxy plastic ester polymer or a combination thereof.

Further, the organic plastic transparent sheet comprises polyethylene terephthalate, cyclic olefin polymer, polymethyl methacrylate, polycarbonate, polyimide, polyethylene naphthalate, cellulose triacetate, or a combination thereof.

Further, the material of the inorganic transparent sheet includes a silica glass material, an alumina ceramic material, an aluminosilicate material, or a combination thereof.

Another objective of the present invention is to provide an optical transparent adhesive layer (OCB) bonding structure for an optical panel, which solves the technical problems of difficulty in rework, difficulty in removing residual glue, and difficulty in increasing the yield of the overall production, and improves the yellowing problem of the display panel, thereby achieving the purpose of improving the yield of the overall production and the durability of the finished product.

In order to achieve the aforementioned another objective, the optical transparent adhesive layer (OCB) bonding structure of the optical panel provided by the present invention is applied between a display protection cover plate or a touch panel and a display module, and the bonding structure includes a first transparent low-adhesion adhesive layer, a second transparent low-adhesion adhesive layer, and an optical transparent sheet; wherein, the first transparent low-adhesion adhesive layer can be repeatedly removed and directly adhered on the display protection cover plate or the touch panel; the second transparent low-adhesion adhesive layer is repeatedly and directly attached to the display module in a removable way; the optical transparent sheet body is stacked between the first transparent low-adhesion adhesive layer and the second transparent low-adhesion adhesive layer, and no air gap exists between the optical transparent sheet body and the first transparent low-adhesion adhesive layer and between the optical transparent sheet body and the second transparent low-adhesion adhesive layer; the first transparent low-adhesion adhesive layer and the display protection cover plate or the touch panel and the second transparent low-adhesion adhesive layer and the display module are pasted in a full-pasting mode.

Further, the first transparent low-adhesion adhesive layer is replaced by the optical transparent adhesive layer on the first optical transparent sheet body, and the second transparent low-adhesion adhesive layer is replaced by the optical transparent adhesive layer under the first optical transparent sheet body.

Further, the material of the optical transparent sheet includes organic plastic transparent sheet, inorganic transparent sheet, organic-inorganic composite or multi-layer stacked hybrid sheet.

Further, the material of the first transparent low-adhesion adhesive layer and the second transparent low-adhesion adhesive layer includes silicone, polyurethane, acrylic, ethylene vinyl acetate, copolymer resin, epoxy plastic ester polymer or a combination thereof.

Further, the organic plastic transparent sheet comprises polyethylene terephthalate, cyclic olefin polymer, polymethyl methacrylate, polycarbonate, polyimide, polyethylene naphthalate, cellulose triacetate, or a combination thereof.

Further, the material of the inorganic transparent sheet includes a silica glass material, an alumina ceramic material, an aluminosilicate material, or a combination thereof.

Still another object of the present invention is to provide an optical transparent adhesive layer (OCB) bonding structure of an optical panel, which can improve the yield of bonding and reduce the bonding cost without using expensive bonding equipment. Meanwhile, the technical problems that reworking is difficult, residual glue is not easy to remove, and the overall production yield is difficult to improve are solved, and the purpose that the generalized full-lamination technology is used as a combination of a display and a protective cover plate or a touch panel is achieved.

In order to achieve the above and other objects, an optical transparent adhesive layer (OCB) bonding structure of an optical panel according to the present invention is applied between a display protection cover plate or a touch panel and a display module, the bonding structure includes a transparent low-adhesion adhesive layer and an optical transparent adhesive layer, the optical transparent adhesive layer is bonded to the transparent low-adhesion adhesive layer, and no air gap exists between the optical transparent adhesive layer and the transparent low-adhesion adhesive layer; the bonding structure and the display protection cover plate or the touch panel and the bonding structure and the display module are bonded in a full bonding mode, and no air gap exists between the bonding structure and the display protection cover plate or the touch panel; the first transparent low-adhesion adhesive layer and the display protection cover plate or the touch panel and the second transparent low-adhesion adhesive layer and the display module are pasted in a full-pasting mode.

Further, the transparent low-adhesion glue layer and the optical transparent glue layer are made of silica gel, polyurethane glue, acrylic glue, ethylene vinyl acetate and copolymer resin thereof, epoxy plastic ester polymer or combination thereof.

When the optical transparent adhesive layer (OCB) attaching structure of the optical panel is used, since the first transparent low-adhesion adhesive layer directly attached to the display protection cover plate or the touch panel and the second transparent low-adhesion adhesive layer directly attached to the display module are both transparent low-adhesion adhesive materials, compared with acrylic adhesive, the low-adhesion adhesive has lower adhesive force, is less prone to residual adhesive and has better bubble removal capability, an isopropyl alcohol (IPA) solvent or a plastic scraper (plastic blade) is not required to be used for removing residual adhesive, and the low-adhesion adhesive has better temperature and humidity resistance and is less prone to yellowing. Further, the attaching structure can be used with different optical transparent sheets for different purposes, such as: cellulose triacetate can be used as a base material of a polarizer, polyethylene terephthalate can be used as a base material of an antireflection film or an antiglare film, and the like. Therefore, the invention does not need to use expensive bonding equipment, can improve the bonding yield and reduce the bonding cost. Meanwhile, the technical problems that reworking is difficult, residual glue is not easy to remove, and the overall production yield is difficult to improve are solved, and the purpose that the generalized full-lamination technology is used as a combination of a display and a protective cover plate or a touch panel is achieved.

For a further understanding of the nature, means, and efficacy of the invention to be achieved, reference should be made to the following detailed description of the invention and accompanying drawings which are believed to be in full and illustrative embodiments of the invention, and the same will be understood by reference to the following drawings, which are provided for purposes of illustration and description and are not intended to be limiting.

Drawings

FIGS. 1, 1a and 1b are schematic structural views of a first embodiment of an optically transparent adhesive layer (OCB) bonding structure of an optical panel according to the present invention;

FIGS. 2, 2a and 2b are schematic structural views of a second embodiment of an optically clear adhesive (OCB) bonding structure of an optical panel according to the present invention;

FIG. 3 is a schematic structural diagram of a third embodiment of an optically clear adhesive (OCB) bonding structure of an optical panel according to the present invention;

FIG. 4 is a schematic structural diagram of a fourth embodiment of an optically clear adhesive (OCB) compliant structure of an optical panel according to the present invention; and

fig. 5A and 5B are schematic structural views of a fifth embodiment of an optical transparent adhesive layer (OCB) bonding structure of an optical panel according to the present invention.

Wherein, the reference numbers:

10: display protection cover plate and touch panel

20-20': attaching structure

21: a first transparent low-adhesion adhesive layer

22: second transparent low-adhesion glue layer

23: the first optical transparent sheet

24: optical transparent adhesive layer

25: second optical transparent sheet

26: third optical transparent sheet

27: optical transparent sheet

28: transparent low-adhesion glue layer

30: display module

241: first structure

242: second structure

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and its several details are capable of modification and various changes may be made in the details of the present description without departing from the spirit and scope of the invention.

It should be understood that the structures, ratios, sizes, and numbers of elements shown in the drawings and described in the specification are only used for understanding and reading the present disclosure, and are not used to limit the conditions of the present disclosure, which is not essential to the technology, and any structural modifications, ratio changes or size adjustments should fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure.

The technical contents and the detailed description of the present invention are described below with reference to the drawings.

Please refer to fig. 1 and fig. 2. Fig. 1 is a schematic structural diagram of a first embodiment of an optically transparent adhesive layer (OCB) bonding structure of an optical panel according to the present invention. Fig. 2 is a schematic structural diagram of a second embodiment of an optically transparent adhesive layer (OCB) bonding structure of an optical panel according to the present invention.

As shown in fig. 1, in the first embodiment of the present invention, an optical transparent adhesive layer (OCB) bonding structure 20 of an optical panel is applied between a display protection cover or Touch Panel (TP)10 and a display module (LCM)30, and the bonding structure 20 includes a first transparent low adhesion glue layer 21, a second transparent low adhesion glue layer 22 and a first optically transparent sheet 23. The first transparent low-adhesion adhesive layer 21 is repeatedly and directly attached to the display protection cover plate 10 or the touch panel 10. The second transparent low-adhesion adhesive layer 22 is repeatedly and directly attached to the display module 30. In the first embodiment of the present invention, the first transparent low-adhesion adhesive layer 21 and the display protection cover 10 or the touch panel 10 and the second transparent low-adhesion adhesive layer 22 and the display module 30 are attached in a full-lamination manner. The first transparent low-adhesion glue layer 21 or the second transparent low-adhesion glue layer 22 may include a pure low-adhesion glue, such as a silicone gel (silica gel), or a hybrid low-adhesion glue doped with Polyurethane (PU) or acrylic (acrylic).

The first optical transparent sheet 23 is stacked between the first transparent low-adhesion adhesive layer 21 and the second transparent low-adhesion adhesive layer 22, Optical Clear Adhesive (OCA) 24 is directly attached to both the upper surface and the lower surface of the first optical transparent sheet 23, and air gaps (air gaps) do not exist between the two optical transparent adhesive layers 24 and the first transparent low-adhesion adhesive layer 21 and between the two optical transparent adhesive layers 24 and the second transparent low-adhesion adhesive layer 22. The materials of the first transparent low-adhesion adhesive layer 21, the second transparent low-adhesion adhesive layer 22 and the optical transparent adhesive layer 24 include silicone, polyurethane, acrylic, ethylene vinyl acetate, copolymer resin, epoxy plastic ester polymer or a combination thereof.

Further, the first optical transparent sheet 23 of the present invention can be adjusted according to the function of the attaching structure 20. The material of the optical transparent sheet body comprises an organic plastic transparent sheet body, an inorganic transparent sheet body, an organic-inorganic composite or multi-layer stacked mixed sheet body. For example: cellulose Triacetate (TCA) can be used as a substrate for Polarizer (POL), or a commercially available polarizer can be used as an optically transparent sheet, polyethylene terephthalate (PET) or its multilayer stack, Cyclic Olefin Polymer (COP) or its multilayer stack, polyethylene naphthalate (PEN) or its multilayer stack, acrylic, polycarbonate, transparent glass or ceramic materials, or composites thereof, and the like.

Please refer to fig. 1a and fig. 1b, which illustrate two other structural aspects of the first embodiment of the present invention. As shown in fig. 1a, the structure is substantially the same as that of fig. 1, except that the first transparent low-adhesion adhesive layer 21 is replaced by an optically transparent adhesive layer 24 on the first optically transparent sheet 23. As shown in FIG. 1b, the structure is substantially the same as that shown in FIG. 1, except that the second transparent low-adhesion adhesive layer 22 is replaced by an optical transparent adhesive layer 24 under the first optical transparent sheet 23.

Fig. 2 is a schematic structural diagram of a second embodiment of an optically transparent adhesive layer (OCB) attaching structure of an optical panel according to the present invention. The second embodiment of the present invention is substantially the same as the first embodiment, but the optically clear adhesive layer (OCB) bonding structure 20' of the second embodiment is added with a second optically transparent sheet body 25 and a third optically transparent sheet body 26 in comparison with the optically clear adhesive layer (OCB) bonding structure 20 of the first embodiment. The materials of the first optical transparent sheet 23, the second optical transparent sheet 25 and the third optical transparent sheet 26 include organic plastic transparent sheets, inorganic transparent sheets, organic-inorganic composite or mixed sheets. Wherein, the organic plastic transparent sheet comprises polyethylene terephthalate (PET), cycloolefin polymer (COP), polymethyl methacrylate (PMMA), cellulose Triacetate (TCA) or a combination thereof. Wherein, the material of the inorganic transparent sheet body comprises a silica glass material, an alumina ceramic material, an aluminosilicate material or a combination thereof.

The second optical transparent sheet 25 can be sandwiched between one of the optical transparent adhesive layers 24 and the first transparent low-adhesion adhesive layer 21. The third optical transparent sheet 26 may be sandwiched between another optical transparent adhesive layer 24 and the second transparent low adhesion adhesive layer 22.

Please refer to fig. 2a and fig. 2b, which illustrate two other structural aspects of the second embodiment of the present invention. As shown in fig. 2a, the structure is substantially the same as that of fig. 2, except that the first transparent low-adhesion adhesive layer 21 and the second optically transparent sheet body 25 are replaced by the optically transparent adhesive layer 24 on the first optically transparent sheet body 23. As shown in fig. 2b, the structure is substantially the same as that shown in fig. 2, but the second transparent low-adhesion adhesive layer 22 and the third optically transparent sheet body 26 are replaced by the optically transparent adhesive layer 24 under the first optically transparent sheet body 23.

Fig. 3 is a schematic structural diagram of a third embodiment of an optically transparent adhesive layer (OCB) bonding structure of an optical panel according to the present invention. The third embodiment of the present invention is substantially the same as the second embodiment, except that the optically clear adhesive layer (OCB) bonding structure 20 ″ of the third embodiment has a different optically clear adhesive layer 24 compared to the optically clear adhesive layer (OCB) bonding structure 20' of the second embodiment. The optical transparent adhesive layer 24 according to the third embodiment of the present invention includes a first structure 241 and a second structure 242 stacked on each other, and the first structure 241 and the second structure 242 may have the same composition ratio and different thicknesses, have different composition ratios and different thicknesses, or have been subjected to different treatments (e.g., heat treatment), etc., although the scope of the present invention is not limited thereto.

Fig. 4 is a schematic structural diagram of a fourth embodiment of an optically transparent adhesive layer (OCB) attaching structure of an optical panel according to the present invention. The fourth embodiment of the present invention is substantially the same as the first embodiment, except that the optically clear adhesive layer (OCB) bonding structure 20' ″ of the fourth embodiment does not have the optically clear adhesive layer 24, compared to the optically clear adhesive layer (OCB) bonding structure 20 of the first embodiment. In another embodiment not shown in the drawings, the optical transparent sheet body 27 of the fifth embodiment can be replaced by the first optical transparent sheet body 23.

Fig. 5A and 5B are schematic structural views of a fifth embodiment of an optical transparent adhesive layer (OCB) bonding structure of an optical panel according to the invention. The optical transparent adhesive layer (OCB) attaching structure 20 "" (see fig. 5A) and the attaching structure 20 "" (see fig. 5B) of the fifth embodiment of the invention each include only the transparent low-adhesion adhesive layer 28 and the optical transparent adhesive layer 24, and the attaching structure (which may be the side of the transparent low-adhesion adhesive layer 28 or the side of the optical transparent adhesive layer 24) and the display protection cover 10 or the touch panel 10 and the attaching structure (which may be the side of the transparent low-adhesion adhesive layer 28 or the side of the optical transparent adhesive layer 24) and the display module 30 are attached in a full-attaching manner, and no air gap exists therebetween.

When the optically clear adhesive layer (OCB) attaching structure of the optical panel according to the present invention is used, the following steps may be included: the first transparent low-adhesion adhesive layer 21 is directly attached to the display protection cover plate 10 or the touch panel 10 in a removable and fully-fitting manner. The second transparent low-adhesion adhesive layer is directly attached to the display module 30 in a fully-attached manner and is removable. Before the pressure defoaming process or curing (cure) process is performed on the optical panel, the display protection cover plate 10 or the touch panel 10 or the display module 30 may be optionally reworked. The curing procedure may include pressure curing, Ultraviolet (UV) curing, thermal curing, or ambient curing.

When the display protection cover plate 10 or the touch panel 10 is reworked, the display protection cover plate 10 or the touch panel 10 is separated from the first transparent low-adhesion adhesive layer 21, and then the first transparent low-adhesion adhesive layer 21 is directly attached to the display protection cover plate 10 or the touch panel 10 in a full-bonding manner. When the display module 30 is reworked, the display module 30 is separated from the second transparent low-adhesion adhesive layer 22, and then the second transparent low-adhesion adhesive layer 22 is directly attached to the display module 30 in a full-bonding manner.

Since the first transparent low-adhesion adhesive layer 21 directly attached to the display protection cover plate 10 or the touch panel 10 and the second transparent low-adhesion adhesive layer 22 directly attached to the display module 30 are both transparent low-adhesion adhesive materials, compared to acrylic adhesive, the low-adhesion adhesive has lower adhesive force, less possibility of residual adhesive, and better bubble removal capability, and does not need to use isopropyl alcohol (IPA) solvent or plastic blade (plastic blade) to remove residual adhesive, and the low-adhesion adhesive has better temperature and humidity resistance, less possibility of yellowing (yellowing) phenomenon, and has good reworkability (reworkability) or repairability. Further, the attaching structure can be used with different optical transparent sheets for different purposes, such as: cellulose Triacetate (TAC) may be used as a substrate for Polarizer (POL), or commercially available polarizers may be used as optically transparent sheets, polyethylene terephthalate (PET) or its multilayer stack, cycloolefin polymer (COP) or its multilayer stack, polyethylene naphthalate (PEN) or its multilayer stack, acrylic, polycarbonate, transparent glass or ceramic materials, or composites thereof, and so forth. Therefore, the invention does not need to use expensive bonding equipment, can improve the bonding yield and reduce the bonding cost. Meanwhile, the technical problems that reworking is difficult, residual glue is not easy to remove, and the overall production yield is difficult to improve are solved, and the purpose that the generalized full-lamination technology is used as a combination of a display and a protective cover plate or a touch panel is achieved.

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.