TWI539350B - Touch display apparatus - Google Patents

Description

Touch display device

The present disclosure relates to a touch device, and more particularly to a touch display device.

In a general full-surface touch display device (for example, a full-plane touch whiteboard), the front frame is first attached to the touch detection film, and then pasted through the optical adhesive and the transparent cover without directly contacting The transparent cover is attached. Therefore, the weight of the transparent cover or other force acting on the transparent cover will be transmitted to the touch detection film mainly through the optical adhesive, and then transmitted to the front frame. Moreover, in order to reduce the width of the frame, the edge of the touch detection film is close to the edge of the transparent cover, so that the adhesion area is small. However, because optical adhesives need to balance their optical properties, their choice of materials is limited and the generally accepted shear stress is low. For example, some optical adhesives can withstand shear stresses of less than 1 kg per square centimeter. In a large-sized touch display device, the weight of the transparent cover itself plus the force that may act on the transparent cover is large, so the optical adhesive may not be able to withstand such a large stress and break, so that the light is transmitted. The cover is peeled off. For example, the light-transmissive cover of the 84-inch touch display device weighs about 30 kilograms. Compared with the shear stress that the optical adhesive can withstand, the peeling of the transparent cover plate will easily occur.

A technical aspect of the present invention relates to a touch display device, which utilizes a through-going feature of a touch-sensitive detection film to directly bond a transparent cover plate and a front frame, thereby preventing peeling of the transparent cover plate. The situation.

According to one or more embodiments of the present invention, a touch display device includes a display module, a transparent cover, a front frame, a touch detection film, and a structural adhesive. The display module has a display surface. The transparent cover is opposite to the display surface. The front frame contains side walls and a frame flange. The side walls surround the defined accommodation space. The display module is located in the accommodating space. The frame flange connects the side walls and protrudes toward the side of the side wall with respect to the accommodating space. The bezel flange has a through feature therein. The touch detection film is located between the transparent cover and the display module, and the touch detection film has a through feature therein. The through feature of the frame flange and the through feature of the touch detection film are in communication with each other. The structural adhesive adheres to the frame flange and the transparent cover plate at least through the through feature of the frame flange and the through feature of the touch detection film.

In one or more embodiments of the present invention, the through feature of the touch detection film is at least a consistent hole in the touch detection film.

In one or more embodiments of the present invention, the through hole is circular, elliptical or square.

In one or more embodiments of the present invention, the through feature of the touch detection film is a notch located on at least one side of the touch detection film.

In one or more embodiments of the present invention, the notch is partially circular, partially elliptical or partially square.

In one or more embodiments of the present invention, the touch detection film includes a detection pattern, a trace, a detection area, and a peripheral area. Touch detection film The through feature is separate from the detection pattern. The detection pattern is located in the detection area. The trace connection is electrically connected to the detection pattern, wherein the through feature of the touch detection film is separated from the trace. The surrounding area surrounds the detection area, wherein the trace is located in the surrounding area. The through feature of the touch detection film is located in the peripheral area.

In one or more embodiments of the present invention, the touch display device further includes an optical glue. The optical adhesive adheres to the touch detection film and the transparent cover, and the optical adhesive has at least one through feature therein. The through feature of the optical glue communicates with the through feature of the frame flange and the through feature of the touch detection film. The structural adhesive passes through the through-going feature of the optical glue, and the frame flange and the transparent cover are bonded. The ability of the structural adhesive to withstand shear stress is higher than the ability of the optical adhesive to withstand shear stress.

In one or more embodiments of the present invention, the through projection of the optical glue on the touch detection film at least partially overlaps with the through feature of the touch detection film.

In one or more embodiments of the present invention, the through projection of the optical glue described above has an orthographic projection on the bezel flange that at least partially overlaps the through feature of the bezel flange.

In one or more embodiments of the present invention, the touch display device further includes an adhesive. The adhesive is located between the frame flange and the touch detection film, and the adhesive has a through feature therein. The through feature of the adhesive communicates with the through feature of the frame flange and the through feature of the touch detection film. The structural adhesive is bonded to the flange of the frame and the transparent cover by the through feature of the adhesive.

In one or more embodiments of the present invention, the through projection of the adhesive on the touch detection film at least partially overlaps with the through feature of the touch detection film.

In one or more embodiments of the present invention, the through projection of the adhesive described above has an orthographic projection on the bezel flange that at least partially overlaps the through feature of the bezel flange.

100‧‧‧Touch display device

110‧‧‧ display module

112‧‧‧ display panel

114‧‧‧Backlight module

120‧‧‧Transparent cover

130‧‧‧ front box

132‧‧‧ side wall

134‧‧‧Border flange

140‧‧‧Touch detection film

142‧‧‧Detection pattern

144‧‧‧ Trace

150‧‧‧Structural adhesive

160‧‧‧Optical adhesive

170‧‧‧Adhesive

C‧‧‧ accommodating space

CC‧‧‧ notch

DS‧‧‧ display surface

FO‧‧‧through features

AA‧‧‧Detection Area

NA‧‧‧ surrounding area

SO‧‧‧through features

TO‧‧‧through features

TH‧‧‧Tongkong

OO‧‧‧through features

1 is a side cross-sectional view of a touch display device according to an embodiment of the present invention; and FIG. 2 is a top view of the touch detection film of FIG. 1 .

The embodiments of the present invention are disclosed in the following drawings, and the details of However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings.

When a component is referred to as "on", it can be used to refer to the component directly to the other component, or the other component can be present in the two. Conversely, when an element is referred to as being "directly on" another element, it cannot be. As used herein, the term "and/or" encompasses any combination of one or more of the listed associated items.

FIG. 1 is a side cross-sectional view of a touch display device 100 in accordance with an embodiment of the present invention. As shown in FIG. 1 , a touch display device 100 includes a display module 110, a transparent cover 120, a front frame 130, a touch detection film 140, a structural adhesive 150, and an optical adhesive 160. The display module 110 has a display surface DS. The transparent cover 120 is disposed opposite to the display surface DS. The front frame 130 includes a side wall 132 and a bezel flange 134. The side wall 132 surrounds the defined accommodation space C. The display module 110 is located in the accommodating space C. The frame flange 134 is connected to the side wall 132 and protrudes toward the outer side of the accommodating space C toward the side wall 132. The bezel flange 134 has a through feature FO therein. The touch detection film 140 is located between the transparent cover 120 and the display module 110, and the touch detection film 140 has a through feature TO therein. The through feature FO and the corresponding through feature TO communicate with each other. The structural adhesive 150 bonds the frame flange 134 and the transparent cover 120 at least through the through feature FO and the through feature TO. The optical adhesive 160 bonds the touch detection film 140 and the transparent cover 120.

Since the structural adhesive 150 bonds the frame flange 134 and the transparent cover 120 through the through feature TO of the touch detection film 140, the touch display device 100 can be bonded to the structural adhesive 150 by the transparent cover 120. The structural adhesive 150 is allowed to withstand the stress of the transparent cover 120. For example, the weight of the transparent cover 120 or other force acting on the transparent cover 120 is transmitted to the structural adhesive 150 through the area where the transparent cover 120 and the structural adhesive 150 are bonded, without The optical glue 160 is individually tolerated.

In addition, since the structural adhesive 150 of the present embodiment is not located between the display surface DS and the transparent cover 120, it is not necessary to consider the optical performance of the structural adhesive 150, and the structural adhesive 150 capable of withstanding greater shear stress can be selected to reduce The situation in which the transparent cover 120 is peeled off occurs. Specifically, the ability of the structural adhesive 150 to withstand shear stress can be compared with the ability of the optical adhesive 160 to withstand shear stress. high. In the present embodiment, the ability of the structural adhesive 150 to withstand shear stress may be about 300 kilograms per square centimeter or more.

The structural adhesive 150 can be made of any adhesive material such as DP-810 from 3M (the ability to withstand shear stress is 295 kg per square centimeter) or DP4XL (the ability to withstand shear stress is per square centimeter) 343 kg). It should be understood that the types of the structural adhesive 150 mentioned above are merely illustrative and are not intended to limit the present invention. Those having ordinary knowledge in the technical field of the present invention should be flexibly selected according to actual needs.

FIG. 2 is a top view of the touch detection film 140 of FIG. 1 . As shown in FIG. 2 , in the embodiment, the touch detection film 140 includes at least one detection pattern 142 and at least one trace 144 . The trace 144 is electrically connected to the detection pattern 142. The position of the through feature TO of the touch detection film 140 can be separated from the detection pattern 142 and/or the trace 144 to prevent the through feature TO of the touch detection film 140 from affecting the function of the touch detection film 140.

In addition, the touch detection film 140 can be divided into a detection area AA and a peripheral area NA surrounding the detection area AA. The detection pattern 142 is located in the detection area AA, and the trace 144 is located in the peripheral area NA. Since the detection pattern 142 is generally filled with the entire detection area AA, in the present embodiment, the through feature TO of the touch detection film 140 may be located at a position where the peripheral area NA avoids the trace 144.

In the embodiment, the through feature TO of the touch detection film 140 can be a through hole TH located in the touch detection film 140. Alternatively, the through feature TO of the touch detection film 140 may be a notch CC located on at least one side of the touch detection film 140. Further, the shape of the through hole TH may be a circle, an ellipse or a square. The shape of the recess CC may be partially circular, partially elliptical or partially square. should It is to be understood that the above-described aspects of the through feature TO are merely examples, and are not intended to limit the present invention. Those having ordinary knowledge in the technical field of the present invention should flexibly select the aspect of the through feature TO according to actual needs. As long as the structural adhesive 150 can be allowed to pass.

Returning to FIG. 1 , the position and shape of the through feature TO of the touch detection film 140 may correspond at least partially to the position and shape of the through feature FO of the bezel flange 134 . That is, the orthographic projection of the through feature TO of the touch detection film 140 on the bezel flange 134 can at least partially overlap the through feature FO of the bezel flange 134. In the present embodiment, the position and shape of the through feature TO of the touch detection film 140 can completely correspond to the position and shape of the through feature FO of the frame flange 134. That is, the orthographic projection of the through feature TO of the touch detection film 140 on the bezel flange 134 can completely overlap the through feature FO of the bezel flange 134. However, the present invention is not limited thereto, as long as the structural adhesive 150 can adhere the transparent cover 120 and the frame flange 134 by the through feature TO and the through feature FO.

In the present embodiment, the optical adhesive 160 also has a through feature OO therein. The through feature OO connects the through feature TO of the touch detection film 140 and the through feature FO of the frame flange 134, so that the structural adhesive 150 can adhere to the transparent cover through the through feature OO, the through feature TO and the through feature FO. 120 with a frame flange 134.

In the present embodiment, the position and shape of the through feature OO of the optical adhesive 160 may correspond at least partially to the position and shape of the through feature TO of the touch detection film 140. That is, the orthographic projection of the through feature OO of the optical adhesive 160 on the touch detection film 140 can be integrated with the touch detection film 140. The levy TO overlaps at least partially. In the present embodiment, the position and shape of the through feature OO of the optical adhesive 160 can completely correspond to the position and shape of the through feature TO of the touch detection film 140. That is, the orthographic projection of the through feature OO of the optical adhesive 160 on the touch detection film 140 can completely overlap with the through feature TO of the touch detection film 140. However, the present invention is not limited thereto, as long as the structural adhesive 150 can adhere the transparent cover 120 and the frame flange 134 by the through feature OO, the through feature TO and the through feature FO.

Similarly, the position and shape of the through feature OO of the optical glue 160 may correspond at least in part to the position and shape of the through feature FO of the bezel flange 134. That is, the orthographic projection of the through feature OO of the optical glue 160 on the bezel flange 134 can at least partially overlap the through feature FO of the bezel flange 134. In the present embodiment, the position and shape of the through feature OO of the optical adhesive 160 can completely correspond to the position and shape of the through feature FO of the bezel flange 134. That is, the orthographic projection of the through feature OO of the optical glue 160 on the bezel flange 134 can completely overlap the through feature FO of the bezel flange 134. However, the present invention is not limited thereto, as long as the structural adhesive 150 can adhere the transparent cover 120 and the frame flange 134 by the through feature OO, the through feature TO and the through feature FO.

In the embodiment, the touch display device 100 may further include an adhesive 170. The adhesive tape 170 is bonded to the touch detection film 140 and the frame flange 134, and the adhesive 170 also has a through feature SO therein. The through feature SO communicates with the through feature TO of the touch detection film 140, the through feature FO of the frame flange 134, and the through feature OO of the optical adhesive 160, so that the structure The glue 150 is capable of bonding the transparent cover 120 and the frame flange 134 by the through feature OO, the through feature TO, the through feature SO, and the through feature FO.

In the present embodiment, the position and shape of the through feature SO of the adhesive 170 can correspond at least partially to the position and shape of the through feature TO of the touch detection film 140. That is, the orthographic projection of the through feature SO of the adhesive 170 on the touch detection film 140 may at least partially overlap with the through feature TO of the touch detection film 140. In the present embodiment, the position and shape of the through feature SO of the adhesive 170 can completely correspond to the position and shape of the through feature TO of the touch detection film 140. That is, the orthographic projection of the through feature SO of the adhesive 170 on the touch detection film 140 can completely overlap with the through feature TO of the touch detection film 140. However, the present invention is not limited thereto, as long as the structural adhesive 150 can adhere the transparent cover 120 and the frame flange 134 by the through feature OO, the through feature TO, the through feature SO, and the through feature FO.

Similarly, the position and shape of the through feature SO of the adhesive 170 can correspond at least in part to the position and shape of the through feature FO of the bezel flange 134. That is, the orthographic projection of the through feature SO of the adhesive 170 on the bezel flange 134 can at least partially overlap the through feature FO of the bezel flange 134. In the present embodiment, the position and shape of the through feature SO of the adhesive 170 can completely correspond to the position and shape of the through feature FO of the bezel flange 134. That is, the orthographic projection of the through feature SO of the adhesive 170 on the bezel flange 134 can completely overlap the through feature FO of the bezel flange 134. However, the present invention is not limited thereto, as long as the structural adhesive 150 can adhere the transparent cover 120 and the frame flange 134 by the through feature OO, the through feature TO, the through feature SO, and the through feature FO.

Similarly, the position and shape of the through feature SO of the adhesive 170 may correspond at least partially to the position and shape of the through feature OO of the optical adhesive 160. That is, the orthographic projection of the through feature SO of the adhesive 170 on the optical adhesive 160 can at least partially overlap the through feature OO of the optical adhesive 160. In the present embodiment, the position and shape of the through feature SO of the adhesive 170 can completely correspond to the position and shape of the through feature OO of the optical adhesive 160. That is, the orthographic projection of the through feature SO of the adhesive 170 on the optical adhesive 160 completely overlaps the through feature OO of the optical adhesive 160. However, the present invention is not limited thereto, as long as the structural adhesive 150 can adhere the transparent cover 120 and the frame flange 134 by the through feature OO, the through feature TO, the through feature SO, and the through feature FO.

In the embodiment, the adhesive 170 may be a double-sided adhesive having a square shape, and the substrate of the double-sided adhesive may be, for example, foam, polycarbonate (PC), polymethyl methacrylate. (Polymethylmethacrylate; PMMA) or any combination of the above. However, the present invention does not limit the present invention. In fact, the adhesive 170 may be other kinds of adhesive materials as long as the touch detection film 140 and the frame flange 134 can be bonded.

Although the first figure illustrates the adhesive 170 as the adhesive touch detection film 140 and the frame flange 134, this does not limit the present invention. In fact, in some embodiments, if there are other components between the touch detection film 140 and the bezel flange 134, the adhesive 170 can also bond the other components to the bezel flange 134. That is, the adhesive 170 is only required to be located between the touch detection film 140 and the bezel flange 134 and adhere to the component closest to the bezel flange 134 and the bezel flange 134.

The through feature OO, the through feature TO, the through feature SO, and the through feature FO can be produced by press forming. In addition, the through feature OO, the through feature TO, the through feature SO and the through feature FO may be separately stamped, or may be stamped together, or even partially stamped and partially stamped together. Those having ordinary knowledge in the technical field to which the present invention pertains should flexibly select an implementation manner depending on actual needs.

The material of the previous frame 130 may be metal, plastic and/or other suitable materials. The frame 130 can be manufactured in the form of forging, casting, cutting or injection molding.

In an embodiment of the invention, the display module 110 includes a display panel 112 and a backlight module 114. The display panel 112 is located between the backlight module 114 and the transparent cover 120. The display panel 112 described above may be a liquid crystal display panel, but this does not limit the present invention. For example, in some embodiments of the present invention, the display panel 112 may also be, for example, an electrophoretic display panel or an active array organic light emitting diode display panel. When the display panel 112 is a display panel having active light emitting characteristics (for example, an active array organic light emitting diode display panel), the backlight module 114 may be omitted.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100‧‧‧Touch display device

110‧‧‧ display module

112‧‧‧ display panel

114‧‧‧Backlight module

120‧‧‧Transparent cover

130‧‧‧ front box

132‧‧‧ side wall

134‧‧‧Border flange

140‧‧‧Touch detection film

150‧‧‧Structural adhesive

160‧‧‧Optical adhesive

170‧‧‧Adhesive

C‧‧‧ accommodating space

DS‧‧‧ display surface

FO‧‧‧through features

SO‧‧‧through features

TO‧‧‧through features

OO‧‧‧through features

Claims (12)

A touch display device includes: a display module having a display surface; a transparent cover plate opposite to the display surface; and a front frame comprising: at least one side wall defining an accommodation space, the display mode The group is located in the accommodating space; and at least one frame flange is connected to the side wall, and protrudes toward the outer side of the accommodating space, the frame flange has at least one through feature therein; The film is disposed between the transparent cover and the display module, and the touch detection film has at least one through feature therein, wherein the through feature of the frame flange and the touch detection film The through features are connected to each other; and the at least one structural adhesive bonds the frame flange and the transparent cover plate at least through the through feature of the frame flange and the through feature of the touch detection film. The touch display device of claim 1, wherein the through feature of the touch detection film is at least a consistent hole in the touch detection film. The touch display device of claim 2, wherein the through hole is circular, elliptical or square. The touch display device of claim 1, wherein the through feature of the touch detection film is at least one notch on at least one side of the touch detection film. The touch display device of claim 4, wherein the notch is partially circular, partially elliptical or partially square. The touch detection device of the first aspect of the invention, wherein the touch detection film comprises: at least one detection pattern, wherein the through feature of the touch detection film is separated from the detection pattern; at least one The detection pattern is electrically connected to the detection pattern, wherein the through feature of the touch detection film is further separated from the trace; a detection area, wherein the detection pattern is located in the detection area; and a peripheral area surrounding the a detection area, wherein the trace is located in the peripheral area, and the through feature of the touch detection film is located in the peripheral area. The touch display device of claim 1, further comprising: at least one optical adhesive, bonding the touch detection film and the transparent cover, and the optical adhesive has at least one through feature therein, wherein The through feature of the optical adhesive communicates with the through feature of the bezel flange and the through feature of the touch detection film, and the structural adhesive passes through the through feature of the optical adhesive to bond the bezel flange and the The transparent cover plate; wherein the structural adhesive is capable of withstanding shear stress and has higher ability to withstand the shear stress of the optical adhesive. The touch display device of claim 7 , wherein the through projection of the optical adhesive on the touch detection film at least partially overlaps the through feature of the touch detection film. The touch display device of claim 7, wherein the orthographic projection of the through feature of the optical glue on the bezel flange at least partially overlaps the through feature of the bezel flange. The touch display device of claim 1, further comprising: at least one adhesive between the frame flange and the touch detection film, and the adhesive has at least one through feature therein. The through feature of the adhesive communicates with the through feature of the bezel flange and the through feature of the touch detection film, and the structural adhesive passes through the through feature of the adhesive to bond the bezel flange with The transparent cover. The touch display device of claim 10, wherein the through projection of the adhesive on the touch detection film at least partially overlaps the through feature of the touch detection film. The touch display device of claim 10, wherein an orthographic projection of the through feature of the adhesive on the bezel flange at least partially overlaps the through feature of the bezel flange.