TWI441055B - Touch display structure - Google Patents

Description

Touch screen structure

The invention relates to a touch screen structure, in particular to a touch screen structure provided with a gap filling material.

With the advancement of electronic technology, touch display has gradually become a common operation interface in portable electronic devices such as mobile phones or smart phones. Referring to FIG. 1 , the conventional touch screen structure mainly includes a touch module P and a display module L. The touch module P and the display module L are adhered to each other through the first optical adhesive A1. Pick up.

As shown in FIG. 1 , the touch module P includes a first substrate G1 and a second substrate G2 , wherein the first and second substrates G1 and G2 are coupled to each other through the second optical adhesive A2 . The display module L is composed of a frame B, two support members F, a display panel T, a filter C, and a plurality of optical films O. The support member F is disposed on the frame B. The display panel T is disposed on the support member F, and the filter C and the optical film O are respectively disposed on the upper and lower sides of the display panel T.

It should be understood that when the first optical adhesive A1 adhesive contact control module P and the display module L are used, the first optical adhesive A1 is often susceptible to the effect of the capillary effect from the support member F and the display panel. The gap between the T penetrates into the interior of the display module L, thereby causing the optical film O at the bottom of the display module L to be contaminated; in addition, the first optical adhesive A1 may also be infiltrated into the gap between the support member F and the frame B. The bottom of the display module L, which also causes the optical film O to be contaminated, and seriously affects the performance of the touch screen.

An embodiment of the present invention provides a touch screen structure including a touch module, a display module, a first optical adhesive, and a gap filler. The display module has a frame and a display panel, wherein the display panel is disposed inside the frame, the first optical adhesive contact control module and the display module. The gap-filling material seals a gap between the frame and the display panel to prevent the first optical glue from infiltrating into the interior of the display module.

In one embodiment, the aforementioned interstitial material contains a thermosetting plastic.

In one embodiment, the first optical glue is a liquid optical glue.

In an embodiment, the frame has a U-shaped cross section.

In one embodiment, the display module further includes a support member, wherein the support member is disposed on the frame body, and the display panel is disposed on the support member, and the gap filler material seals between the frame body, the support member, and the display panel The gap.

In an embodiment, the support member has a T-shaped cross section.

In one embodiment, the touch screen structure further includes a first stopper disposed between the gap filler material and the touch module to prevent the first optical glue from overflowing.

In an embodiment, the first stopper includes an ultraviolet curing material.

In one embodiment, the touch module has a first substrate, a second substrate, and a second optical adhesive, and the second optical adhesive is bonded to the first and second substrates.

In one embodiment, the touch screen structure further includes a touch sensor disposed on the second substrate.

In one embodiment, the touch screen structure further includes a second stopper disposed between the first and second substrates to prevent the second optical glue from overflowing.

In an embodiment, the second stopper has an ultraviolet curing material.

In one embodiment, the touch screen structure is an in-cell touch screen structure, and the touch module has a first substrate, wherein the first optical adhesive is bonded to the first substrate and the display Module.

In one embodiment, the display module further includes a filter and a plurality of optical films, wherein the filter and the optical film are respectively located on opposite sides of the display panel.

In one embodiment, the touch screen structure further includes a touch sensor disposed on the filter.

In one embodiment, the gap-filling material is formed with a first protrusion and a second protrusion, and the first and second protrusions extend toward the frame.

In an embodiment, the first protrusion seals a gap between the support and the frame.

In an embodiment, the second protrusion seals a gap between the display panel and the support.

In an embodiment, the first and second protrusions are substantially parallel to each other.

The above described objects, features, and advantages of the invention will be apparent from the description and appended claims

Referring to FIG. 2, the touch screen structure of the embodiment of the present invention mainly includes a touch module P and a display module L. The first optical glue is transmitted between the touch module P and the display module L. The first optical glue A1 is, for example, a liquid optically clear adhesive (LOCA).

As shown in FIG. 2, the touch module P includes a first substrate G1 and a second substrate G2, wherein the first and second substrates G1 and G2 are coupled to each other through the second optical adhesive A2. A touch sensor may be disposed on the upper surface or the lower surface of the second substrate G2 for sensing an object above the first substrate G1 (eg, a user's finger). In addition, the display module L in this embodiment is composed of a frame B, two support members F, a display panel T, a filter C, and a plurality of optical films O, wherein the support member F is disposed on On the frame B, the display panel T is disposed on the support member F, and the filter C and the optical film O are respectively disposed on the upper and lower sides of the display panel T. In the embodiment, the frame body B has a U-shaped cross section, the support member F has a T-shaped cross section, and the support member F can also be integrally formed with the frame body B, and the optical film O can include diffusion. A diffuser, a brightness enhancement film (BEF), and a light guide.

It can be seen from FIG. 2 that a gap filler material S is further disposed on both sides of the display module L. The gap filler material S can be, for example, a thermosetting plastic, and is mainly used to control the gap filler material S during construction. The temperature and viscosity change enable the gap filler material S to be accurately filled into the gap between the display panel T, the support member F and the frame B, thereby preventing the first optical glue A1 from penetrating downward to the display. The optical film O at the bottom of the module L ensures the quality and performance of the touch screen.

It should be noted that, in this embodiment, in addition to sealing the gap between the display panel T, the support member F and the frame B by the gap filler material S, at the same time, the first optical glue A1 is formed at both ends. The first stopper D1, the first stopper D1 may be an ultraviolet curing material, disposed between the gap filler material S and the touch module P, thereby preventing the first optical glue A1 from overflowing to the outside. Referring to FIG. 3, in the touch screen structure of another embodiment of the present invention, in addition to the first stopper D1 formed on both ends of the first optical adhesive A1, the second optical adhesive A2 in the touch module P The second stopper D2 is further formed at both ends, and the second stopper D2 can also be disposed between the first and second substrates G1 and G2 by using an ultraviolet curing material, thereby preventing the second optical adhesive A2 from overflowing to the outside.

Referring to FIG. 4, the touch screen structure in this embodiment is an in-cell touch screen structure, which mainly omits the second substrate G2 and the second optical glue A2, and the touch is omitted. A touch sensor may be disposed on the upper surface or the lower surface of the filter C for sensing an object above the first substrate G1 (eg, a user's finger). As can be seen from FIG. 4, the gap filler material S on both sides of the display module L can effectively seal the gap between the display panel T, the support member F and the frame B, thereby preventing the first optics. The glue A1 penetrates downward into the optical film O at the bottom of the display module L to ensure the quality and performance of the touch screen.

Referring to FIG. 5, the touch screen structure of the embodiment is also an in-cell touch screen structure, wherein a first stop D1 is formed at both ends of the first optical glue A1, and the foregoing A stopper D1 can be disposed between the gap filler material S and the touch module P by using an ultraviolet curing material, thereby preventing the first optical glue A1 from overflowing to the outside. It can be seen from FIG. 5 that the gap between the display panel T, the support member F and the frame B can be effectively sealed by the gap filler material S on both sides of the display module L, thereby preventing the first optical glue. A1 penetrates downward into the optical film O at the bottom of the display module L.

It should be understood from the foregoing description that the gap filler material S is mainly used to seal the gap between the display panel T, the support member F and the frame B, wherein it can be seen from Fig. 6 that the structure of the gap filler material S is formed. The first protruding portion S1 and the second protruding portion S2 are substantially parallel to each other, and the first protruding portion S1 extends in the direction of the frame B, so as to effectively seal the seam between the supporting member F and the frame B. In addition, the second protrusion S2 also extends toward the frame B, and can effectively seal the gap between the display panel T and the support F.

In summary, the present invention provides a touch screen structure, which mainly includes a touch module and a display module, wherein the touch optical module and the display module pass through the first optical adhesive (for example, liquid optical adhesive) ) Bonding to each other. It should be understood that the present invention seals the gap between the display panel and the frame by a gap filler material (for example, a thermosetting plastic), thereby preventing the first optical adhesive from penetrating downward into the optical film at the bottom of the display module, thereby ensuring The quality and performance of the touch screen.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. Those skilled in the art having the ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

A1. . . First optical glue

A2. . . Second optical glue

B. . . framework

C. . . Filter

D1. . . First stop

D2. . . Second stop

F. . . supporting item

G1. . . First substrate

G2. . . Second substrate

L. . . Display module

O. . . Optical diaphragm

P. . . Touch module

S. . . Interstitial material

T. . . Display panel

Figure 1 is a cross-sectional view showing a conventional touch screen structure;

2 is a cross-sectional view showing the structure of a touch screen according to an embodiment of the present invention;

3 is a cross-sectional view showing the structure of a touch screen according to another embodiment of the present invention;

4 is a cross-sectional view showing the structure of a touch screen according to another embodiment of the present invention;

Figure 5 is a cross-sectional view showing the structure of a touch screen according to another embodiment of the present invention;

Figure 6 is a cross-sectional view showing a gap filler material according to an embodiment of the present invention.

A1. . . First optical glue

A2. . . Second optical glue

B. . . framework

C. . . Filter

D1. . . First stop

F. . . supporting item

G1. . . First substrate

G2. . . Second substrate

L. . . Display module

O. . . Optical diaphragm

P. . . Touch module

S. . . Interstitial material

T. . . Display panel

Claims (17)

A touch screen structure includes: a touch module; a display module having a frame and a display panel, wherein the display panel is disposed inside the frame; a first optical glue is bonded to the touch The module and the display module, wherein the first optical adhesive is a liquid optical adhesive; and a gap filler material seals a gap between the frame and the display panel to prevent the first optical adhesive from infiltrating the display mold Inside the group, wherein the gap filler material is a thermosetting plastic. The touch screen structure of claim 1, wherein the frame has a U-shaped cross section. The touch screen structure of claim 1, wherein the display module further comprises a support member, the support member is disposed on the frame, and the display panel is disposed on the support member, wherein the filling The gap material seals the frame, the support, and the gap between the display panels. The touch screen structure of claim 3, wherein the support member has a T-shaped cross section. The touch screen structure of the first aspect of the invention, wherein the touch screen structure further comprises a first stop disposed between the gap filler material and the touch module to prevent the first optical The glue overflows. The touch screen structure of claim 5, wherein the first block has an ultraviolet curing material. The touch screen structure of claim 1, wherein the touch module has a first substrate, a second substrate, and a second optical a glue, and the second optical adhesive adheres to the first and second substrates. The touch screen structure of the seventh aspect of the invention, wherein the touch screen structure further comprises a touch sensor disposed on the second substrate. The touch screen structure of the seventh aspect of the invention, wherein the touch screen structure further comprises a second block disposed between the first and second substrates to prevent the second optical glue from overflowing. The touch screen structure of claim 9, wherein the second block has an ultraviolet curing material. The touch screen structure of the first aspect of the invention, wherein the touch screen structure is an in-cell touch screen structure, and the touch module has a first substrate, wherein the touch panel has a first substrate The first optical adhesive bonds the first substrate and the display module. The touch screen structure of claim 11, wherein the display module further comprises a filter and a plurality of optical films, wherein the filter and the optical film are respectively located on the display panel Opposite side. The touch screen structure of claim 12, wherein the touch screen structure further comprises a touch sensor disposed on the filter. The touch screen structure of claim 12, wherein the gap-filling material is formed with a first protruding portion and a second protruding portion, and the first and second protruding portions are oriented toward the frame. extend. The touch screen structure of claim 14, wherein the first protrusion seals a gap between the support and the frame. The touch screen structure of claim 14, wherein the second protrusion seals a gap between the display panel and the support member. The touch screen structure as described in claim 14, wherein The first and second projections are substantially parallel to each other.