Touch display

Abstract

A touch display includes a panel module and a housing assembled with the panel module. The panel module has a touch layer for providing touch control, a protective layer stacked on the touch layer, a display layer located on the side of the touch layer without the protective layer, a backlight layer located below the display layer, and an optical adhesive layer for bonding the display layer and the touch layer. The protective layer is divided into a visible area and a non-visible area along its edge. The housing has a base, a support extending from the base, and a bent portion extending from the support and bending relative to the support. The bent portion defines an assembly opening for at least partial insertion of the panel module and is bonded to the touch layer with an adhesive located within the projection area of ​​the non-visible area of ​​the protective layer.

Description

Technical Field

[0001] This utility model relates to a touch display, and more particularly to a touch display that can improve the three-dimensional effect of the image and reduce costs. Background Technology

[0002] Please see Figure 1 , Figure 1 The disclosed structure is that of a conventional touch display device 80. The conventional touch display device 80 includes a housing 81, a touch layer 82 disposed within the housing 81, a protective layer 83 disposed on the touch layer 82, a display layer 84 disposed on the touch layer 82 and opposite to the protective layer 83, and a backlight layer 85 disposed on the side of the display layer 84 where the touch layer 82 is not located. A thick adhesive layer 86, which is an optical adhesive, is further disposed between the touch layer 82 and the display layer 84. This thick adhesive layer 86 provides adhesion between the touch layer 82 and the display layer 84 without affecting the image displayed on the display layer 84. However, due to the limitations of the manufacturing process and structure of the current touch display device 80, the thickness of the thick adhesive layer 86 needs to be greater than 1000 micrometers due to display device factors, which makes it impossible to reduce the manufacturing cost. Furthermore, due to the large thickness of the thick adhesive layer 86, the current touch display device 80 presents a deeper depth of field, which cannot improve the three-dimensional effect of the image.

[0003] Furthermore, in the current touch display device 80, the inner diameter of the housing 81 needs to be larger than that of the display layer 84 and the backlight layer 85 to ensure that the display layer 84 and the backlight layer 85 do not detach. However, this results in a complex process where the display layer 84 and the backlight layer 85 are assembled, the display layer 84 is bonded to the housing 81 with an adhesive 87, the touch layer 82 and the protective layer 83 are installed, and the touch layer 82 is bonded to the housing 81 with another adhesive 88. This makes the process complex and costly. Utility Model Content

[0004] The main purpose of this invention is to solve the problem that the manufacturing cost of current touch display devices cannot be reduced.

[0005] Another objective of this invention is to solve the problem that the thickness of the optical adhesive affects the three-dimensional effect of the image in current touch display devices.

[0006] Another objective of this invention is to solve the problem of complex manufacturing processes in current touch display devices.

[0007] Another objective of this invention is to solve the problem of reducing the thickness and weight of existing touch display devices.

[0008] To achieve the above objectives, the present invention provides a touch display comprising a panel module and a housing assembled with the panel module. The panel module has a touch layer for providing touch control, a protective layer superimposed on the touch layer, a display layer located on the side of the touch layer without the protective layer, a backlight layer located below the display layer, and an optical adhesive layer for bonding the display layer and the touch layer. The protective layer is divided into a visible area and a non-visible area along its edge, with the touch-sensitive portion of the touch layer located in the visible area. The housing is assembled with the panel module and has a base, a support portion extending from the base, and a bent portion extending from the support portion and bent relative to the support portion. The bent portion defines an assembly opening for at least partial insertion of the panel module and is bonded to the touch layer with an adhesive within the projection area of ​​the non-visible area of ​​the protective layer.

[0009] In one embodiment, the diameter of the assembly opening is smaller than that of the touch layer and the protective layer.

[0010] In one embodiment, the invisible area defines a first edge facing the visible area and a second edge opposite the first edge, with the adhesive close to the second edge.

[0011] In one embodiment, the thickness of the optical adhesive layer is less than 500 micrometers.

[0012] In one embodiment, a gap exists between the bend and the display layer.

[0013] In one embodiment, the display layer is flush with the optical adhesive layer.

[0014] As disclosed in the foregoing description of this utility model, compared with conventional technology, this utility model has the following characteristics: This utility model reduces the cost of the touch display by decreasing the thickness of the optical adhesive layer. Simultaneously, due to the reduced thickness of the optical adhesive layer, the distance between the display layer and the surface of the touch display is reduced, thereby increasing the depth of field of the image presented by the touch display, and thus enhancing the three-dimensional effect and sense of layering of the image. Furthermore, during the assembly of this utility model's touch display, the panel module is directly assembled onto the housing using a modular structure, simplifying the manufacturing process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the current structure;

[0016] Figure 2 This is a structural schematic diagram of an embodiment of the present utility model;

[0017] Figure 3 This is an exploded view of the structure of an embodiment of the present invention.

[0018] [Symbol Explanation]

[0019] 20: Touchscreen display

[0020] 21: Panel Module

[0021] 211: Touch Layer

[0022] 212: Protective layer

[0023] 213: Display Layer

[0024] 214: Backlight layer

[0025] 215: Optical adhesive layer

[0026] 216: Visible Area

[0027] 217: Invisible Area

[0028] 218: First Edge

[0029] 219: Second Edge

[0030] 23: Shell

[0031] 231: Base

[0032] 232: Support section

[0033] 233: Bending section

[0034] 234: Assembly opening

[0035] 235: Adhesive

[0036] 236: Caliber

[0037] 237: Gap

[0038] 80: Touch display device

[0039] 81: Shell

[0040] 82: Touch layer

[0041] 83: Protective layer

[0042] 84: Display Layer

[0043] 85: Backlight layer

[0044] 86: Thick adhesive layer

[0045] 87, 88: Adhesive Detailed Implementation

[0046] The detailed description and technical content of this utility model are now explained in conjunction with the accompanying drawings:

[0047] Please see Figure 2This invention provides a touch display 20, which includes a panel module 21 and a housing 23. The panel module 21 is a modular structure, comprising a touch layer 211, a protective layer 212, a display layer 213, a backlight layer 214, and an optical adhesive layer 215. The touch layer 211 provides touch control; various existing touch solutions exist, such as resistive, capacitive, and piezoelectric types. Any technical solution that causes a signal change in the touch layer 211 when the user touches the touch surface with their finger or other object can be used. The protective layer 212 is stacked on top of the touch layer 211 to protect it. Generally, the protective layer 212 is made of a transparent material, such as transparent glass or transparent acrylic, so as not to affect the touch layer 211's ability to sense user operations or the display screen 20's image presentation. The display layer 213 is located on the side of the touch layer 211 where the protective layer 212 is not located. The display layer 213 generates visual content and is composed of multiple liquid crystal molecules. These liquid crystal molecules change polarization directions based on voltage variations, thereby altering the light and causing changes in pixel brightness and color. The backlight layer 214 is located below the display layer 213 and provides a light source for the display layer 213 to display an image. The light generated by the backlight layer 214 passes through the display layer 213 and can still penetrate the touch layer 211 and the protective layer 212, allowing the user to directly see the image displayed on the display layer 213 from outside the touch display 20. The optical adhesive layer 215 bonds the display layer 213 and the touch layer 211, achieving optical bonding between them. The optical adhesive layer 215 is composed of a solid optically clear acrylic adhesive (OCA). This OCA is colorless and transparent, and has good light transmittance, which can reduce the light loss of the backlight layer 214. The optically clear adhesive used in this invention is a thin adhesive. The thinness of the optical adhesive layer 215 shortens the distance between the display layer 213 and the surface of the touch display 20, thereby increasing the depth of field of the image presented by the display layer 213 and enhancing the three-dimensional effect of the image. In one embodiment, it is combined with... Figure 1 The optical adhesive layer 215 is half the thickness of the existing touch display device 80, and the thickness of the optical adhesive layer 215 is less than 500 micrometers, preferably less than 250 micrometers.

[0048] Continuing from the above, the protective layer 212 is divided into a visible area 216 and a hidden area 217. The hidden area 217 is located along the edge of the protective layer 212 and is composed of a black matrix material. In the field of touch display, this hidden area 217 is commonly referred to as the black frame. The hidden area 217 shields the metal traces of the touch layer 211, the display layer 213, and the backlight layer 214, while preventing external ambient light from affecting the conductivity of the metal traces. The visible area 216 is located in the middle part of the protective layer 212 and is the part of the display layer 213 that the user can view from outside the touch display 20. The touch-sensitive portion of the touch layer 211 is located in the visible area 216.

[0049] The housing 23 has a base 231, a support 232, and a bending portion 233. The support 232 extends from the base 231 and is disposed longitudinally on the base 231 to provide support. The bending portion 233 extends from the support 232 and is bent relative to the support 232. The bending portion 233 defines an assembly opening 234, which provides at least a partial insertion of the panel module 21. The assembly opening 234 is bonded to the touch layer 211 with an adhesive 235. The adhesive 235 is located within the projection area 217 of the non-visible region of the protective layer 212, so it does not affect the user's viewing of the image displayed on the display layer 213. In one embodiment, the adhesive 235 is a room temperature vulcanized silicone rubber (RTV) adhesive.

[0050] Please see Figures 2 to 3This describes the assembly of the touch display 20. The touch display 20 of this invention is derived from a semi-finished product, which can be obtained externally. This semi-finished product is disassembled and structurally adjusted before being assembled to complete the touch display 20. Specifically, the semi-finished product is a ready-made liquid crystal display module. This liquid crystal display module is disassembled into two parts. One of these parts undergoes laser processing, frame adjustment, and other dimensional adjustment steps to form the housing 23 of this invention. The other part includes the display layer 213 and the backlight layer 214 described in this invention. In practice, one of the parts has an optical adhesive layer 215 applied to the display layer 213 to bond the touch layer 211, and a protective layer 212 applied to the touch layer 211, thereby forming the panel module 21 of this invention. Next, the panel module 21 and the housing 23 are assembled. Adhesive 235 is applied to the bent portion 233 of the housing 23. The panel module 21 is inserted into the assembly opening 234 in a modular structure, such that the display layer 213 and the backlight layer 214 are located within the assembly opening 234, and the backlight layer 214 is not in contact with the base 231 of the housing 23. After the adhesive 235 cures, the assembly of the panel module 21 and the housing 23 is complete.

[0051] In summary, this invention reduces the cost of the touch display 20 and improves the 3D effect of the touch display 20 by reducing the thickness of the optical adhesive layer 215. In terms of manufacturing process, the panel module 21 of this invention is assembled in a modular structure, eliminating the need to separately install the display layer 213 and the touch layer 211 onto the housing 23. Furthermore, when assembling the panel module 21 with the housing 23, the display layer 213 and the backlight layer 214 do not need to be installed independently; they will directly extend into the assembly opening 234, simplifying the process.

[0052] Please refer to the following: Figure 2 and Figure 3 In one embodiment, the diameter (236) of the assembly opening 234 allows the display layer 213 and the backlight layer 214 to be inserted therein. Furthermore, the diameter (236) of the assembly opening 234 is slightly larger than the display layer 213, resulting in a gap 237 between the bend 233 and the display layer 213. In another embodiment, the display layer 213 is substantially flush with the optical adhesive layer 215, so that the optical adhesive layer 215 does not contact the bend 233. In yet another embodiment, the diameter (236) of the assembly opening 234 is smaller than the touch layer 211 and the protective layer 212, so that when the panel module 21 is assembled with the housing 23, the touch layer 211 and the protective layer 212 are not within the assembly opening 234, and the panel module 21 is bonded to the housing 23 using the touch layer 211.

[0053] On the other hand, please see Figure 2The invisible area 217 defines a first edge 218 and a second edge 219. The first edge 218 faces the visible area 216, and the second edge 219 is opposite to the first edge 218. The adhesive 235 is located within the projection range of the invisible area 217 of the protective layer 212 and is close to the second edge 219.

Claims

1. A touch display, characterized in that, Include: A panel module includes a touch layer for providing touch control, a protective layer stacked on the touch layer, a display layer located on the side of the touch layer without the protective layer, a backlight layer located below the display layer, and an optical adhesive layer bonding the display layer and the touch layer. The protective layer is divided into a visible area and a non-visible area along its edge. The touch-sensitive portion of the touch layer is located in the visible area. A housing, assembled with the panel module, the housing having a base, a support extending from the base, and a bend extending from the support and bending relative to the support, the bend defining an assembly opening therein for at least partial insertion of the panel module, and being bonded to the touch layer with an adhesive located within the projection area of ​​the invisible region of the protective layer.

2. The touch display as described in claim 1, characterized in that, The diameter of the assembly opening is smaller than that of the touch layer and the protective layer.

3. The touch display as described in claim 2, characterized in that, The invisible area defines a first edge opposite to the visible area and a second edge opposite to the first edge, with the adhesive close to the second edge.

4. The touch display as described in any one of claims 1 to 3, characterized in that, The thickness of the optical adhesive layer is less than 500 micrometers.

5. The touch display as described in any one of claims 1 to 3, characterized in that, There is a gap between the bent portion and the display layer.

6. The touch display as described in claim 5, characterized in that, The display layer is flush with the optical adhesive layer.

Images