TWI512558B - Touch module - Google Patents

Description

Touch module

The invention relates to a touch module.

As the latest input device, the touch-type liquid crystal display is the most simple, convenient and natural human-machine dialogue mode, and has been widely welcomed and applied. Existing liquid crystal displays typically include a curved outer casing and a touch panel. The curved outer casing and the touch panel are integrated by optical glue. However, since the edge portion of the optical adhesive is pressed by the pressure of the curved outer casing, the problem of overflowing the glue is caused, resulting in uneven thickness of the optical adhesive, which affects the touch performance of the touch liquid crystal display.

In view of this, it is necessary to provide a touch module that can prevent overflow.

A touch module includes a casing, a touch panel, a first optical adhesive layer, an outer frame, and a liquid glue. The outer frame houses the touch panel. The outer casing includes a light transmitting portion and a fixing portion surrounding the light transmitting portion. The touch panel is glued to the light transmitting portion of the outer casing by the first optical adhesive layer. The outer frame includes a glued surface disposed opposite the outer casing. The glued surface is fixed to the fixing portion by the liquid glue. The glue surface is provided with a plurality of overflow glue receiving grooves for receiving the liquid glue.

Compared with the prior art, the touch module of the present invention has a plurality of overflow storage slots for receiving the liquid glue due to the glued surface of the outer frame. Therefore, the touch module of the present invention can be Prevent the problem of liquid glue overflowing.

100‧‧‧ touch module

10‧‧‧ Shell

20‧‧‧Touch panel

30‧‧‧First optical layer

40‧‧‧ display panel

50‧‧‧Second optical layer

60‧‧‧ frame

70‧‧‧liquid glue

11‧‧‧Transmission Department

12‧‧‧ Fixed Department

111‧‧‧ first surface

112‧‧‧ second surface

113‧‧‧ side wall

21‧‧‧ Sensing area

22‧‧‧ wiring area

23‧‧‧ third surface

24‧‧‧ fourth surface

41‧‧‧ fifth surface

42‧‧‧ sixth surface

600‧‧‧ openings

61a‧‧‧ Frame Department

601‧‧‧Support

602‧‧ ‧ spilled retaining wall

61‧‧‧ glued surface

610‧‧‧Overflow storage tank

613‧‧‧ pole

FIG. 1 is a schematic perspective view of a touch module provided by the present invention.

2 is a perspective exploded view of the touch module of FIG. 1.

3 is a cross-sectional view of the touch module of FIG. 1 taken along line III-III.

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 to FIG. 3 , a touch module 100 according to an embodiment of the present invention includes a housing 10 , a touch panel 20 , a first optical adhesive layer 30 , a display panel 40 , and a second optical component . The glue layer 50, an outer frame 60 and a liquid glue 70.

The outer casing 10 is made of a non-conductive material, such as a plastic material or a glass material, and includes a light transmitting portion 11 and a fixing portion 12 surrounding the light transmitting portion 11. The light transmitting portion 11 is made of a light transmissive or transparent material. The light transmitting portion 11 is substantially rectangular parallelepiped, and includes a first surface 111, a second surface 112 facing away from the first surface 111, and a sidewall 113 vertically connecting the first surface 111 and the second surface 112. The first surface 111 is substantially parallel to the second surface 112. The fixing portion 12 and the light transmitting portion 11 are connected by double injection molding. The fixing portion 12 is coupled to the side wall 113. The fixing portion 12 has a curved shape and is bent from the side wall 113 toward the first surface 111.

In the embodiment, the touch panel 20 is a capacitive touch panel, and includes a sensing area 21 and a wiring area 22 surrounding the sensing area 21 . The sensing area 21 is an effective actuation area that changes the sensing capacitance according to the static electricity of the human body. The wiring area 22 is used for wiring purposes to transmit touch signals to a processor (not shown). The touch panel 20 is substantially rectangular parallelepiped and includes a third surface 23 and a fourth surface 24 facing away from the third surface 23 . The third surface 23 is substantially parallel to the fourth surface 24. The areas of the third surface 23 and the fourth surface 24 of the touch panel 20 are both larger than the area of the first surface 111 of the light transmitting portion 11 and smaller than the area of the inner side surface of the outer casing 10.

The first optical adhesive layer 30 is an OCR (Optical Clear Resin, OCR) optical adhesive or an OCA (Optical Clear Adhesive, OCA). The area of the first optical adhesive layer 30 is larger than the area of the first surface 111 of the transparent portion 11 and smaller than the area of the inner side surface of the outer casing 10, and is also larger than the third surface 23 of the touch panel 20. The area. The fourth surface 24 of the touch panel 20 is adhered to the transparent portion 11 of the outer casing 10 and a portion of the fixing portion 12 by the first optical adhesive layer 30 to make the touch panel 20 The fourth surface 24 is opposite the first surface 111. The first optical adhesive layer 30 and the touch panel 20 completely cover the transparent portion 11 and the wiring region 22 is covered by the fixing portion 12, that is, the fixing portion 12 of the outer casing 10 The sensing area 21 of the touch panel 20 is covered to prevent the user from performing an invalid touch operation.

The display panel 40 is used to display image data. The material of the second optical adhesive layer 50 is the same as the material of the first optical adhesive layer 30. The display panel 40 is attached to the third surface 23 of the touch panel 20 by the second optical adhesive layer 50 . The display panel 40 includes a fifth surface 41 opposite the third surface 23 and a sixth surface 42 that faces away from the fifth surface 41. The fifth surface 41 is substantially parallel to the sixth surface 42. In this embodiment, the area of the fifth surface 41 is smaller than the area of the third surface 23 and equal to the area of the first surface 111, so that the image data displayed by the display panel 40 can pass through the second surface. Optical adhesive layer 50, the touch surface The plate 20 and the first optical adhesive layer 30 are completely displayed on the light transmitting portion 11 of the outer casing 10.

The outer frame 60 includes an opening 600 and a frame portion 61a surrounding the opening 600. The inner wall of the frame portion 61a extends a plurality of support portions 601 toward the center of the opening portion 600. The shape and size of the opening portion 600 are matched to the shape and size of the third surface 23 of the touch panel 20, respectively. The frame portion 61 a is fixed to the fixing portion 12 of the outer casing 10 by the first optical adhesive layer 30 . The frame portion 61a includes a bonding surface 61 disposed opposite to the fixing portion 12. The shape and size of the bonding surface 61 are respectively matched with the shape and size of the inner side surface of the fixing portion 12 of the outer casing 10. In the embodiment, the shape of the bonding surface 61 is curved corresponding to the shape of the fixing portion 12. shape. The glue surface 61 is fixed to the fixing portion 12 by the liquid glue 70. In this embodiment, the liquid glue 70 is a liquid structural glue. The frame portion 61a is surrounded by four struts 613, and the glue surface 61 of each of the struts 613 is provided with a plurality of overflow receiving grooves 610. In the embodiment, the overflow plastic storage groove 610 has a linear shape. The plurality of overflow receiving grooves 610 of the same strut 613 are spaced apart from each other, and each of the overflow receiving grooves 610 extends in a direction parallel to the extending direction of the corresponding strut 613. The edge of the glued surface 61 is also provided with a plurality of overflow walls 602.

In other embodiments, the first optical adhesive layer 30 and the second optical adhesive layer 50 may also be made of different materials.

In other embodiments, the shape of the overflow receiving groove 610 may also be other shapes such as a triangle or a circle.

In the assembly, the display panel 40 is glued to the touch panel 20 by the second optical adhesive layer 50 , and then the first optical adhesive layer 30 is applied to the touch panel 20 . a fourth surface 24, the display panel 40 to be glued together, the first The two optical adhesive layers 50 and the touch panel 20 are collectively received in the opening portion 600 of the outer frame 60 , and the sixth surface 42 of the display panel 40 is abutted against the support portion 601 . Finally, the outer frame 60 is fixed to the inner side of the fixing portion 12 of the outer casing 10 by the first optical adhesive layer 30, and the touch panel 20 is also used by the first optical adhesive layer 30. The light transmitting portion 11 of the outer casing 10 is fixed. The liquid glue 70 is received by the overflow glue receiving groove 610, so that the problem of overflowing glue can be prevented, and the overflow rubber retaining wall 602 is used to further block the colloid overflow of the liquid glue 70. In addition, since the liquid glue 70 is received by the overflow receiving groove 610, the contact area of the liquid glue 70 and the fixing portion 12 is increased, so that the liquid glue 70 is adhered to the fixing portion 12. The joint strength is increased.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

100‧‧‧ touch module

20‧‧‧Touch panel

30‧‧‧First optical layer

40‧‧‧ display panel

50‧‧‧Second optical layer

60‧‧‧ frame

11‧‧‧Transmission Department

12‧‧‧ Fixed Department

111‧‧‧ first surface

112‧‧‧ second surface

113‧‧‧ side wall

23‧‧‧ third surface

24‧‧‧ fourth surface

41‧‧‧ fifth surface

42‧‧‧ sixth surface

601‧‧‧Support

602‧‧ ‧ spilled retaining wall

61‧‧‧ glued surface

610‧‧‧Overflow storage tank

70‧‧‧liquid glue

Claims (10)

A touch module includes a housing, a touch panel, a first optical adhesive layer, an outer frame, and a liquid glue. The outer frame houses the touch panel, and the outer casing includes a light transmitting portion. And a fixing portion surrounding the transparent portion, the touch panel is glued to the transparent portion of the outer casing by the first optical adhesive layer, and the outer frame includes a glued opposite to the outer casing The improvement is that the glued surface is fixed to the fixing portion by the liquid glue, and the glue surface is provided with a plurality of overflow glue receiving grooves for receiving the liquid glue. The touch module of claim 1, wherein the light transmitting portion includes a first surface, a second surface that faces away from the first surface, and the first surface and the first surface The side wall of the two surfaces is connected to the side wall, and the fixing portion is curved and curved from the side wall toward the first surface. The touch module of claim 2, wherein the shape and size of the bonding surface are respectively matched with the shape and size of the inner side surface of the fixing portion, and the shape of the bonding surface corresponds to the fixing portion. The shape is curved. The touch module of claim 2, wherein the touch panel includes a sensing area and a wiring area surrounding the sensing area, and the first optical adhesive layer and the touch panel are completely covered. The light transmitting portion and the wiring region are covered by the fixing portion. The touch module of claim 2, wherein the touch panel includes a third surface away from the first surface and a fourth surface opposite the first surface, The touch surface module further includes a display panel and a second optical adhesive layer, wherein the surface of the first optical adhesive layer is smaller than the area of the inner surface of the outer casing. The display panel is attached to the third surface of the touch panel by the second optical adhesive layer. The touch module of claim 5, wherein the display panel includes a fifth surface opposite to the third surface and a sixth surface that faces away from the fifth surface, the fifth The area of the surface is smaller than the area of the third surface and equal to the area of the first surface. The touch module of claim 5, wherein the outer frame includes an opening portion and a frame portion surrounding the opening portion, the display panel, the second optical adhesive layer, and the touch panel Each of the frame portions is shaped and sized to match the shape and size of the outer casing, and the glued surface is disposed at the frame portion. The touch module of claim 7, wherein an inner wall of the opening extends toward a center of the opening and a support portion, and the sixth surface of the display panel abuts against the support portion. The touch module of claim 7, wherein the frame body is surrounded by four poles, and the plurality of glue receiving slots are respectively formed on the glued surface of each pole, and the glue receiving slot is The shape is linear, and a plurality of overflow receiving grooves on the same pole are spaced apart from each other, and each of the overflow receiving grooves extends in a direction parallel to the extending direction of the corresponding strut. The touch module of claim 1, wherein the edge of the glued surface is further provided with a plurality of overflow walls for blocking the overflow of the liquid glue.