TWM482789U - Touch apparatus, panel assembly and functional film - Google Patents

Abstract

An apparatus using a touch panel is provided. The apparatus includes a touch panel having a bottom surface, an anti-shatter film having a first surface and a second surface, wherein the first surface is attached to the bottom surface of the touch panel, a display panel having a third surface, and a pressure sensitive adhesive disposed on the second surface or the third surface, wherein the display panel is attached to the second surface via the pressure-sensitive adhesive, wherein the touch panel, the anti-shatter film, the display panel and the pressure-sensitive adhesive form a touch panel unit.

Description

Touch device, panel combination and functional film

This creation is about a panel, especially a touch panel.

For the bonding of the touch panel 11 and the display panel 12 (for example, a liquid crystal panel), please refer to FIG. In the prior art, a sealant 13 is printed between the touch panel 11 and the display panel 12, and then an air layer 14 is present between the touch panel 11 and the display panel 12. It can also be called a gap. In order to prevent the user from being injured due to the breakage of the touch panel 11, an explosion-proof film 15 is often adhered to the back side of the touch panel 11. However, the method of bonding the touch panel 11 to the display panel 12 by using the sealant 13 has been carried out for a long time, and the materials and processes used are mature, but the touch panel 11 and the display panel 12 are used. The air layer 14 may be present, and the light passing through the display panel 12 may cause loss of light intensity due to the air layer 14 passing through the touch panel 11 , that is, the loss of the overall transmittance, thereby affecting the user. Visual effect.

For the fit of the touch panel and the LCD panel, please refer to Figure 2. Figure 2 shows another conventional technique that uses Optical Clear Adhesive (OCA) or Water Clear Resin to directly touch the touch. The control panel 11 and the display panel 12 are fully adhered, which improves the disadvantage that the gap is formed by the use of the printing frame glue, so that the user can obtain a good visual effect, and because the touch panel 11 and the display panel are 12 is adhered in a fully adhesive manner, so that the touch panel 11 adheres to the display panel even if it is broken, and is not easily injured to the user. However, for the process surface, such a full-fit process is prone to appearance defects, such as the formation of conforming bubbles, so the yield of such a process is not high, thereby affecting mass production, and due to the high rework threshold, Lead to material loss and cost increase in the labeling industry.

For the sake of this, the applicant has created the "touch panel" in the light of the lack of prior art to improve the above-mentioned shortcomings.

One of the solutions of the present invention provides a panel combination, which not only solves the problem of poor visual effect caused by the gap between the touch panel and the display panel, but also reduces the generation of bonding bubbles between the touch panel and the display panel. It provides a simple and effective method of rework in case of heavy work.

Another aspect of the present invention provides a touch device comprising a touch panel; an explosion-proof film having a first surface and a second surface opposite thereto, wherein the first surface is attached to the underside of the touch panel; a display panel having a third surface; and a pressure sensitive adhesive disposed on the second surface or the third surface, wherein the display panel is attached to the second surface by the pressure sensitive adhesive The touch panel, the explosion-proof film, the display panel and the pressure sensitive adhesive constitute a touch unit.

Further, the present invention provides a panel assembly including a touch panel; a display panel; and a first adhesive layer that fits the touch panel and the display panel; and a functional film having a first surface and A second surface is attached to the touch panel and the display panel.

A further aspect of the present invention provides a panel assembly comprising: a first panel; a second panel; and a first pressure sensitive adhesive for attaching the first panel and the second panel.

A further aspect of the present invention provides a functional film comprising: a substrate having a first surface and a second surface; and a first pressure sensitive adhesive attached to the first surface.

11, 31‧‧‧ touch panel

12, 32‧‧‧ display panel

13‧‧‧Box glue

14‧‧‧ air layer

15, 33, 35‧ ‧ explosion-proof membrane

16, 40‧‧‧ optical glue

34, 36, 38, 64, 67‧‧‧ Pressure sensitive adhesive

37‧‧‧Protection panel

41‧‧‧ first surface

42‧‧‧ second surface

43‧‧‧ third surface

44‧‧‧ fourth surface

51, 61‧‧‧ plastic substrate

60, 70‧‧‧ functional film

62‧‧‧ fifth surface

63‧‧‧ sixth surface

65‧‧‧Dissecting film

66,68‧‧‧Protective film

80, 90‧‧‧ panel combination

Figure 1 is a schematic cross-sectional view of a conventional touch panel.

FIG. 2 is a schematic cross-sectional view of another conventional touch panel.

3A to 3E are cross-sectional views showing an embodiment of the present creative panel assembly.

Figure 4 is a schematic cross-sectional view showing still another embodiment of the present creative panel assembly.

Fig. 5 is a schematic cross-sectional view showing still another embodiment of the creation panel assembly.

Figure 6 is a schematic cross-sectional view showing an embodiment of the functional film of the present invention.

Figure 7 is a schematic cross-sectional view showing another embodiment of the functional film of the present invention.

Figure 8 is a cross-sectional view showing still another embodiment of the present creative panel assembly.

Figure 9 is a schematic cross-sectional view showing still another embodiment of the present creative panel assembly.

The detailed description of the embodiments of the present invention is as follows, however, the present invention can be widely implemented in other embodiments in addition to the detailed description. That is, the scope of the present invention is not limited by the embodiments that have been proposed, but should be based on the scope of the patent application proposed by the present invention.

This creation combines the advantages of conventional techniques while eliminating the shortcomings of the prior art. An embodiment of the present invention is shown in FIG. 3A. An explosion-proof film 33 is used between the touch panel 31 and the display panel 32. The first surface 41 of the explosion-proof film is attached to the lower surface of the touch panel 31. A surface of the second surface 42 of the explosion-proof membrane 33 is provided with a good foaming property, such as a pressure sensitive adhesive 34. The material of the pressure sensitive adhesive 34 is selected from polyurethane (PU) or silicone. The explosion-proof film 33 is bonded to the third surface 43 of the display panel 32 by the pressure sensitive adhesive 34, and the touch panel 31 is bonded to the touch panel 32 by the explosion-proof film 33. In this way, not only the explosion-proof function is provided, but also the problem of poor visual effect can be improved because the air layer 14 is not present in the prior art, and the yield of the full fit and the difficulty of heavy work can be improved.

For the aforementioned visual effects, compare the improvement results achieved by this creation with the prior art, as shown in Table 1:

It can be seen from the transmittance measurement data shown in Table 1 that the transmittance of the display panel 11 or 32 that is not attached to the touch panel 31 is 100%, and the method of the present method is used. After the display panel 32 is attached to the touch panel 31, the measured transmittance value is as high as 98.5%, and the transmittance loss is only 1.5%. However, when using conventional techniques, the loss of transmittance will be as high as 14% due to the presence of the air layer 14.

In addition, if the touch panel 31 and the display panel 32 need to be reworked due to poor bonding, as in one embodiment of the present invention, as shown in FIGS. 3A and 3B, only the touch panel is required. After the explosion-proof film 33 and the pressure sensitive adhesive 34 are removed from the display panel 32, another explosion-proof film 35 and a pressure sensitive adhesive 36 are attached to the touch panel 31, and the touch panel is replaced. The rework can be completed by attaching the pressure sensitive adhesive 36 to the display panel 32. The step of removing the explosion-proof film 33 between the touch panel 31 and the display panel 32 and the pressure sensitive adhesive 34 is performed by first applying the pressure sensitive adhesive 34 to the third surface 43 of the display panel 32. To separate, the explosion-proof film 33 and the pressure sensitive adhesive 34 are removed to retrieve the touch panel 31. Then, a new explosion-proof film 35 and a pressure sensitive adhesive 36 are attached to the touch panel 31.

Please refer to FIG. 3C , which is a schematic cross-sectional view of another embodiment of the present touch panel. As shown in Fig. 3C, the present invention provides another structure for panel fitting. When the explosion-proof film 33 is not needed, a pressure sensitive adhesive 34 can be directly bonded between the touch panel 31 and the display panel 32. The pressure sensitive adhesive 34 is used as a bonding material instead of the conventional optical adhesive (OCA) or water gel (OCR). By using the pressure sensitive adhesive 34, as described above, not only the prior art can be improved. The problem of poor visual performance can also improve the overall yield and the difficulty of heavy work.

The pressure sensitive adhesive 34 can also be applied to different panel combinations. Please refer to FIGS. 3D and 3E for a cross-sectional view of another embodiment of the present touch panel. As shown in FIG. 3D, the present invention provides another structure for panel bonding. When the explosion-proof film 33 is not needed, a pressure-sensitive adhesive 34 can be used to cover a cover glass (Cover lens) 37 and the touch. The control panel 31 performs direct bonding. As shown in FIG. 3E , the protective panel 37 and the touch panel 31 are directly bonded together by the pressure sensitive adhesive 34 , and the display panel 32 and the touch panel 31 are performed by the pressure sensitive adhesive 38 . The display panel 32 and the touch panel 31 are directly bonded together by the pressure sensitive adhesive 38, and the protective panel 37 is directly connected to the touch panel 31 by the pressure sensitive adhesive 34. fit. The structure of the panel combination as shown in Fig. 3E can also be obtained by a method different from the order in which the respective panels are bonded.

Please refer to FIG. 4 , which is a cross-sectional view of another embodiment of the present touch panel. As shown in FIG. 4, the first surface 41 of the explosion-proof film 33 does not include the optical adhesive (OCA) 40. Therefore, before the touch panel 31 is attached to the display panel 32, the optical adhesive 40 needs to be coated. Covering the underside of the touch panel 31, and bonding the pressure sensitive adhesive 34 to the second surface 42 of the explosion-proof film 33 or the third surface 43 of the display panel 32, thereby the first portion of the explosion-proof film 33 The two surfaces 42 are bonded to the display panel 32, and the lower surface of the touch panel 31 is bonded to the first surface 41 of the explosion-proof film 33 by the optical adhesive 40.

Please refer to FIG. 5 , which is a cross-sectional view of still another embodiment of the present touch panel. As shown in FIG. 5, the explosion-proof membrane 33 includes a plastic substrate 51 and an optical adhesive 40. The plastic substrate 51 has a fourth surface 44, and the optical adhesive 40 is disposed on the fourth surface 44. In practical applications, after the explosion-proof film 33 is purchased, the process of applying the optical adhesive 40 is not required to be performed under the touch panel 31, and the explosion-proof film 33 having the optical adhesive 40 is attached to the touch panel. Just below 31. In addition, the pressure sensitive adhesive 34 is adhered to the third surface 43 of the display panel 32 such that the display panel 32 and the explosion-proof film 33 are attached to the touch panel 31.

Please refer to Figures 6 and 7 for a cross-sectional view of another embodiment of the functional film applied to various panel combinations. As shown in FIG. 6, a functional film 60 includes a plastic substrate 61 having a fifth surface 62 and a sixth surface 63. The fifth surface 62 is adhered to a pressure sensitive adhesive 64. The pressure sensitive adhesive 64 is further adhered to a release film 65, and the sixth surface 63 is adhered to a protective film 66, thereby forming the functional film 60 having a single-sided pressure sensitive adhesive. . Or, as shown in FIG. 7, a functional film 70 is another change of the functional film 60. The difference from the functional film 60 is that the sixth surface 63 is attached to another pressure sensitive adhesive 67. 67 is then bonded to a protective film 68 to form the functional film 70 having a double-sided pressure sensitive adhesive. The functional film 70 can be a functional film that is adhered to an explosion-proof function between the two panels.

As shown in FIG. 8, a panel assembly 80 formed by attaching a functional film 60 shown in FIG. 6 to a display panel 32 is used. The release film 65 on the functional film 60 has been peeled off. The plastic substrate 61 having the protective film 66 is bonded to the surface of the display panel 32 through the pressure sensitive adhesive 64. The functional film 60 may be a polarizer, an anti-reflection or AR film or an anti-glare or AG film attached to a panel surface. When the material of the substrate 61 is polyester (Polyster, PET), the functional film 60 is an anti-reflection film or an anti-glare film; and when the material of the substrate 61 is a cycloolefin polymer (COP olefin polymer, COP) The functional film 60 is an optical film.

Further, as shown in FIG. 9, a panel assembly 90 formed by bonding two functional films 60 having a function shown in FIG. 6 to both surfaces of a display panel 32 is used. The release film 65 is peeled off, and the two sets of the plastic substrate 61 having the protective film 66 are bonded to both surfaces of the display panel 32 through the pressure sensitive adhesive 64. When the material of the substrate 61 is Triacetyl Cellulose (TAC), the functional film 60 is a polarizer.

The present invention is described above in terms of preferred embodiments, and is only used to help understand the implementation of the present creation, and is not intended to limit the spirit of the present creation, and those skilled in the art can understand the spirit of the creation without departing from the spirit of the creation. In the scope of the patent, the scope of patent protection is subject to the scope of the patent application and its equivalents.

Example

A touch device comprising: a touch panel; an anti-shatter film The film has a first surface and a second surface opposite thereto, wherein the first surface is attached to the underside of the touch panel; a display panel has a third surface; and a pressure sensitive adhesive And being disposed on the second surface or the third surface, wherein the display panel is attached to the second surface by the pressure sensitive adhesive.

2. The device of embodiment 1, wherein the pressure sensitive adhesive is made of polyurethane (PU), silicone or acrylic (Acrylic).

3. The device of any of embodiments 1-2, further comprising: an optical adhesive (OCA) disposed on the first surface.

4. The device of any of embodiments 1-3, wherein the explosion-proof membrane comprises: a plastic substrate having a fourth surface; and an optical adhesive (OCA) disposed on the fourth surface.

A panel assembly comprising: a touch panel; a display panel; a first adhesive layer affixing the touch panel and the display panel; and a functional film having a first surface and a second surface Attached to the touch panel and the display panel respectively.

6. The panel assembly of embodiment 5, wherein the first surface is attached to the touch panel through the first adhesive layer.

7. The panel assembly of any of embodiments 5-6, wherein the first adhesive layer is a pressure sensitive adhesive, an optical adhesive (OCA), an aqueous gel (OCR), or a combination thereof.

8. The panel assembly of any of embodiments 5-7, wherein the functional film is an explosion-proof film.

9. The panel assembly of any of embodiments 5-8, wherein the second surface is attached to the display panel through a second adhesive layer.

10. A panel assembly comprising: a first panel; a second panel; and a first pressure sensitive adhesive for attaching the first panel and the second panel.

11. The panel assembly of embodiment 10, wherein when the first panel is a touch panel, the second panel can be a display panel or a protective panel.

12. The panel assembly of any of the embodiments 10-11, further comprising: a third panel; and a second pressure sensitive adhesive for bonding the second panel and the third panel, wherein the first panel is A display panel, the second panel is a touch panel, and the third panel is a protection panel.

13. A functional film comprising: a substrate having a first surface and a second surface opposite; and a first pressure sensitive adhesive adhered to the first surface.

14. The functional film of claim 13, further comprising a second pressure sensitive adhesive attached to the second surface, wherein the adhesive force of the first pressure sensitive adhesive is different from the adhesive force of the second pressure sensitive adhesive .

15. The functional film of any of embodiments 13 to 14, wherein the material of the substrate comprises polyester (Polyster, PET), triacetyl cellulose (TAC), and cycloolefin polymer (COP). ).

31‧‧‧ touch panel

32‧‧‧ display panel

33‧‧‧Explosion-proof membrane

34‧‧‧ Pressure sensitive adhesive

41‧‧‧ first surface

42‧‧‧ second surface

43‧‧‧ third surface

Claims (15)

A touch device includes: a touch panel; an anti-shatter film having a first surface and a second surface opposite thereto, wherein the first surface is attached to the underside of the touch panel; a display panel having a third surface; and a pressure sensitive adhesive disposed on the second surface or the third surface, wherein the display panel is attached to the second surface by the pressure sensitive adhesive . The device of claim 1, wherein the pressure sensitive adhesive is made of polyurethane (PU), silicone or acrylic (Acrylic). The device of claim 1, further comprising: an optical adhesive (OCA) disposed on the first surface. The device of claim 1, wherein the explosion-proof membrane comprises: a plastic substrate having a fourth surface; and an optical adhesive (OCA) disposed on the fourth surface. A panel assembly includes: a touch panel; a display panel; a first adhesive layer that fits the touch panel and the display panel; and a functional film having a first surface and a second surface Attached to the touch panel and the display panel. The panel assembly of claim 5, wherein the first surface is attached to the touch panel through the first adhesive layer. The panel assembly of claim 5, wherein the first adhesive layer is a pressure sensitive adhesive, an optical adhesive (OCA), an aqueous gel (OCR), or a combination thereof. The panel assembly of claim 5, wherein the functional film is an explosion-proof film. The panel assembly of claim 5, wherein the second surface is attached to the display panel through a second adhesive layer. A panel assembly includes: a first panel; a second panel; and a first pressure sensitive adhesive for attaching the first panel and the second panel. The panel assembly of claim 10, wherein when the first panel is a touch panel, the second panel can be a display panel or a protection panel. The panel assembly of claim 10, further comprising: a third panel; and a second pressure sensitive adhesive for bonding the second panel and the third panel, wherein the first panel is a The display panel, the second panel is a touch panel, and the third panel is a protection panel. A functional film comprising: a substrate having a first surface and a second surface; and a first pressure sensitive adhesive attached to the first surface. The functional film of claim 13, further comprising a second pressure sensitive adhesive attached to the second surface, wherein the adhesive force of the first pressure sensitive adhesive is different from the adhesive of the second pressure sensitive adhesive force. The functional film according to claim 13, wherein the material of the substrate comprises polyester (Polyster, PET), triacetyl cellulose (TAC), and Cycloolefin Polymer (COP). .