TWI475088B - Adhesive tape having recycling function and panel module thereof - Google Patents

Description

Tape with heavy duty characteristics and panel module thereof

The invention relates to a tape for bonding a glass substrate to a plastic carrier, in particular to a tape with rework characteristics and related panel modules.

With the advancement of technology, consumer portable electronic devices generally use a touch panel as a standard device for providing an input interface. For example, both tablet and smart phones on the market are equipped with a panel screen with touch function, and the size of the touch panel is also increasing with the trend. In order to facilitate installation, and to save material cost and manufacturing manpower, the conventional touch panel is adhered to the carrier in an adhesive manner. Since the production yield of the touch panel is not high, the factory end often needs to pull off the self-supporting seat to return to the supplier due to the poor quality of the touch panel when manufacturing the portable electronic device. However, the strength of the conventional adhesive is relatively sticky. The use of the operator's self-supporting seat to remove the touch panel is likely to cause damage to the touch panel, and the conventional adhesive system may have some colloid remaining on the touch panel. It takes time and cost to remove the residual glue, and the poor quality touch panel can be returned to the supplier. Therefore, how to design a sticky adhesive tape which has stable viscosity and does not cause residual glue when the touch panel is detached from the carrier is a development focus of the related industry.

The present invention provides a tape having a rework characteristic and its associated panel module to solve the above problems.

The patent application scope of the present invention discloses an adhesive tape having heavy duty characteristics. The tape comprises a polyester film, a polyester substrate colloid, and a tissue substrate colloid. The first surface of the polyester substrate colloid has a first surface and a second surface, and the first surface of the polyester substrate is adhered to the first surface of the polyester film. The first surface of the tissue of the tissue paper substrate and the second surface have an adhesive, and the first surface of the colloid of the tissue substrate is adhered to the second surface of the first surface of the polyester film. . The second surface of the polyester substrate gel is adhered to a glass substrate, and the second surface of the tissue substrate colloid is adhered to a plastic carrier.

The scope of the patent application of the present invention further discloses that the adhesive layer of the polyester substrate is substantially more viscous to the polyester film than to the glass substrate.

The scope of the patent application of the present invention further discloses that the adhesive of the tissue base substrate relative to the plastic carrier is substantially larger than the viscosity of the polyester film.

The patent application scope of the present invention further discloses that the polyester substrate colloid and the tissue substrate adhesive system are physically bonded to the first surface and the second surface of the polyester film, respectively.

The patent application scope of the present invention further discloses a panel module using a reworkable adhesive tape, comprising a plastic carrier, a glass substrate disposed on the plastic carrier, and a tape, the glass substrate being coated by the tape To adhere to the plastic carrier. The tape comprises a polyester film, a polyester substrate colloid, and a tissue substrate colloid. The first surface of the polyester substrate colloid has a first surface and a second surface, and the first surface of the polyester substrate is adhered to the first surface of the polyester film. The first surface of the tissue of the tissue paper substrate and the second surface have an adhesive, and the first surface of the colloid of the tissue substrate is adhered to the second surface of the first surface of the polyester film. . The second surface of the polyester substrate is used for adhering to the glass substrate, and the second surface of the tissue of the tissue substrate is used for adhering to the plastic carrier, and the tape is opposite to the plastic carrier. The viscous system is substantially larger than the viscosity of the glass substrate.

The scope of the patent application of the present invention further discloses that the thickness of one of the tapes is substantially the same as the sum of thicknesses of the polyester film, the polyester substrate gel, and the tissue substrate colloid.

The tape of the invention can not only adhere the glass substrate to the plastic carrier, but also utilize the difference in the adhesion between the components of the tape, so that the tape can be completely detached when the glass substrate is removed from the plastic carrier. The glass substrate remains on the plastic carrier, thereby preventing residual glue from remaining on the glass substrate. The adhesive tape of the invention has the advantages of low cost, simple manufacture, and adhesive property which can adhere closely to the plastic carrier and is easy to be peeled off from the glass substrate, so it can be widely applied to various types of adhesive bonding glass substrates and plastic carriers. Portable electronic products.

1 and 2, FIG. 1 is a schematic view showing the appearance of a panel module 10 according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the panel module 10 along the line A-A' according to an embodiment of the present invention. The panel module 10 can be a screen of a portable electronic device, for example, the screen can be a display screen or a touch screen panel, and the portable electronic device can be a notebook computer, a tablet computer, and a smart device. Consumer electronics such as mobile phones. The panel module 10 includes a plastic carrier 12, a glass substrate 14 and a tape 16. In order to speed up the assembly process and save manufacturing costs, the glass substrate 14 of the general portable electronic device is adhered to the plastic carrier 12 by the tape 16.

In addition to attaching the glass substrate 14 to the plastic carrier 12 in a tight and stable manner, the tape 16 of the present invention has the advantages of reworkability and no damage to the surface of the glass substrate 14. For example, when the user wants to remove the glass substrate 14 that has been adhered to the plastic carrier 12 through the adhesive tape 16, the tape 16 is completely retained on the plastic carrier 12 to ensure the separation of the glass substrate from the plastic carrier 12. There is no residual portion of tape 16 on the surface of 14.

Please refer to FIG. 3 and FIG. 4, FIG. 3 is a partially enlarged schematic view of the panel module 10 according to the embodiment of the present invention, and FIG. 4 is a schematic exploded view of the components of the tape 16 according to the embodiment of the present invention. The tape 16 is a thin double-sided adhesive tape. The tape 16 comprises a polyester film 18, a polyester substrate 20 and a tissue substrate 22. The polyester film 18 can be a sheet-like structural member which serves as an interposing layer for bonding the polyester substrate colloid 20 and the tissue substrate colloid 22 to each other. The polyester substrate 20 and the tissue substrate 22 are adhered to the first surface 181 and the second surface 183 of the polyester film 18 respectively. Therefore, the tape 16 can be a polyester film 18 or a polyester substrate 20 A combination of one formed by physically bonding the tissue substrate 22 to each other. The polyester film 18, the polyester substrate colloid 20 and the tissue substrate colloid 22 can be tightly bonded to each other by external force pressing, for example, by a roller, so that the thickness of one of the tapes 16 is substantially the same as that of the polyester film 18. The sum of the thicknesses of one of the polyester substrate colloid 20 and the tissue substrate colloid 22.

As shown in FIG. 4, the polyester substrate 20 is a double-sided adhesive, and the first surface 201 and the second surface 203 each have an adhesive, and the first surface 201 is adhered to the polyester film 18. A surface 181. The tissue substrate 22 is also a double-sided adhesive. The first surface 221 and the second surface 223 have adhesives, and the first surface 221 is adhered to the second surface of the polyester film 18 opposite to the first surface 181. 183, that is, the polyester substrate colloid 20 and the tissue substrate colloid 22 can be adhered to the opposite surfaces of the polyester film 18, such as the upper end surface and the lower end surface, respectively, to form a composite tape. After the tape 16 is completed, the user can adhere the second surface 203 of the polyester substrate 20 to the glass substrate 14, and adhere the second surface 223 of the tissue substrate 22 to the plastic carrier 12 to The tape 16 having the rework characteristics can be used as an adhesive medium between the glass substrate 14 and the plastic carrier 12.

Due to the proprietary material properties of the polyester substrate colloid 20 and the tissue substrate colloid 22, the adhesion of the polyester substrate colloid 20 to the polyester film 18 can be substantially greater than the polyester substrate colloid 20 relative to the glass substrate 14. The adhesiveness of the tissue substrate 22 relative to the plastic carrier 12 can be substantially greater than the adhesion of the tissue substrate 22 to the polyester film 18. Therefore, when the glass substrate 14 and the plastic carrier 12 which are bonded to each other by the present invention need to be disassembled and separated, the tape 16 is retained on the plastic carrier 12 by the difference in viscosity between the different constituent layers, that is, the glass substrate 14 No tape 16 remains on the top, thus ensuring a clean and flat surface of the glass substrate 14 when removed from the plastic carrier 12.

In summary, the present invention utilizes the difference in mutual adhesion of a plurality of colloids composed of different substrates to produce a tape in which the residual glue remains only in the plastic carrier, and the glass substrate does not have any residual glue. In detail, the tissue of the tissue can be attached to various materials, especially in plastic or polyester to exhibit the best adhesion. The polyester substrate gel can also be attached to a variety of materials, especially polyester to give the best adhesion. Therefore, the adhesiveness of the colloidal substrate of the tissue paper relative to the plastic shell can be substantially greater than the adhesiveness of the colloidal polyester film, and the adhesion of the polyester film to the colloid of the tissue paper substrate can be substantially greater than the relative polyester base. The adhesiveness of the material colloid, and the viscosity of the polyester substrate colloid relative to the polyester film can be substantially greater than the viscosity of the colloid with respect to the glass substrate, that is, in the bottom-up direction as shown in FIG. The adhesive composition of the adhesive tape of the adhesive tape exhibits a gradient change between the adhesive layer of the glass substrate and the plastic shell, and the adhesiveness between the adjacent constituent layers of the adhesive tape is gradually weakened from the bottom to the top, so when the glass substrate is self-plasticized When peeling off, the tape can stay in the plastic shell by the gradient change of the viscosity between the constituent layers, so that the residual glue can be prevented from remaining on the glass substrate to maintain the cleanness and flatness of the surface of the glass substrate. In order to facilitate the subsequent heavy industry process.

Compared with the prior art, the adhesive tape of the present invention can not only adhere the glass substrate to the plastic carrier, but also utilize the difference in the adhesive strength between the components of the adhesive tape, so that the adhesive tape can be unloaded from the plastic carrier on the glass substrate. In addition, it completely leaves the glass substrate and remains on the plastic carrier, thereby preventing residual glue from remaining on the glass substrate. The adhesive tape of the invention has the advantages of low cost, simple manufacture, and adhesive property which can adhere closely to the plastic carrier and is easy to be peeled off from the glass substrate, so it can be widely applied to various types of adhesive bonding glass substrates and plastic carriers. Portable electronic products.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

10. . . Panel module

12. . . Plastic carrier

14. . . glass substrate

16. . . tape

18. . . Polyester film

181. . . First surface

183. . . Second surface

20. . . Polyester substrate colloid

201. . . First surface

203. . . Second surface

twenty two. . . Cotton paper substrate colloid

221. . . First surface

223. . . Second surface

A-A’. . . Section line

FIG. 1 is a schematic diagram of the appearance of a panel module according to an embodiment of the present invention.

2 is a cross-sectional view of a panel module in accordance with an embodiment of the present invention.

FIG. 3 is a partially enlarged schematic view of a panel module according to an embodiment of the present invention.

Figure 4 is a schematic exploded view of the components of the tape of the embodiment of the present invention.

12. . . Plastic carrier

14. . . glass substrate

16. . . tape

18. . . Polyester film

20. . . Polyester substrate colloid

twenty two. . . Cotton paper substrate colloid

Claims (9)

An adhesive tape having rework characteristics, comprising: a polyester film; a polyester substrate colloid, wherein the first surface and the second surface of the polyester substrate colloid have a glue, and the polyester substrate colloid The first surface is adhered to the first surface of the polyester film; and a tissue of the tissue paper substrate, the first surface of the tissue of the tissue substrate and the second surface have a glue, and the tissue The first surface of the substrate colloid is adhered to the second surface of the first surface of the polyester film; wherein the second surface of the polyester substrate is adhered to a glass substrate, and the The second surface of the tissue of the tissue substrate is used to adhere to a plastic carrier. The tape of claim 1, wherein the polyester substrate colloid has a viscosity greater than that of the polyester film. The tape of claim 1 or 2, wherein the adhesive of the tissue substrate relative to the plastic carrier is substantially greater than the viscosity of the polyester film. The tape of claim 1, wherein the polyester substrate colloid and the tissue substrate adhesive system are physically bonded to the first surface and the second surface of the polyester film, respectively. A panel module for applying tape with heavy-duty characteristics, comprising: a plastic carrier; a glass substrate disposed on the plastic carrier; and a tape, the glass substrate is adhered to the plastic carrier by the tape, the tape comprises: a polyester film; a polyester a substrate colloid, wherein the first surface of the polyester substrate colloid has a second surface and a second surface, and the first surface of the polyester substrate colloid adheres to the first surface of the polyester film; a cotton paper substrate colloid, wherein the first surface of the tissue of the tissue paper substrate and the second surface have a glue, and the first surface of the tissue of the tissue substrate is adhered to the polyester film. a second surface of a surface; wherein the second surface of the polyester substrate is adhered to the glass substrate, the second surface of the tissue of the tissue substrate is adhered to the plastic carrier, such that the tape is relatively The adhesiveness of the plastic carrier is substantially greater than the viscosity of the glass substrate. The panel module of claim 5, wherein the polyester substrate colloid has a viscosity greater than that of the polyester film. The panel module of claim 5 or 6, wherein the adhesive of the tissue substrate relative to the plastic carrier is substantially greater than the viscosity of the polyester film. The panel module of claim 5, wherein the polyester substrate colloid and the tissue substrate adhesive system are physically bonded to the first surface and the second surface of the polyester film, respectively. The panel module of claim 5, wherein one of the thicknesses of the tape is substantially the same as a sum of thicknesses of the polyester film, the polyester substrate colloid, and the tissue substrate colloid.