Flexible touch structure and touch display screen

Abstract

The utility model discloses a flexible touch control structure and a touch control display screen, and belongs to the technical field of flexible touch control structures, the flexible touch control structure comprises a touch control sensor main body, the side edge of the touch control sensor main body is provided with a blank area, the blank area is provided with a binding area, and the binding area is connected with a connecting piece; the area, opposite to the connecting piece, of the blank area is provided with a grooving area used for fixing the connecting piece and the binding area, materials used for bonding the connecting piece and the binding area are arranged in the grooving area, and the grooving area is arranged on the inner side of the projection, on the touch sensor body, of the connecting piece. According to the flexible touch control structure, the bonding material is arranged in the grooving area, the grooving area is arranged on the inner side of the projection of the connecting piece on the touch control sensor body, the specific surface area of the bonding material arranged in the grooving area is larger, the binding and combining effect of the connecting piece and the binding area can be improved, and the thickness of the touch control structure is kept; and the risk of overflowing and leaking glue is avoided, and the appearance is more attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible touch structures, and more specifically, to a flexible touch structure and a touch display screen. Background Art

[0002] At present, major display screen manufacturers are optimizing from the aspects of function and structure to improve the aesthetics of flexible touch structures or touch display screen products and meet customer requirements such as lightness, thinness, and narrow borders pursued by users.

[0003] Regarding the narrow border design of flexible touch, in order to make the border narrower and narrower, in addition to reducing the width of the wire and the distance between adjacent wires according to the process limit ability, the bonding pads need to be moved out of the border of the touch sensor to make it have a narrow border; in the prior art, generally, a section of area is extended at the original shape of the touch sensor as the bonding pads, and then a transfer FPC is made to be combined with the bonding pads of the touch sensor, and then it is bent outward along the extension to plug the FPC into the control board on the LCM whole machine. However, the problem with this technology is that when the transfer FPC is combined with the bonding pads of the touch sensor, due to the outward bending of the FPC, stress will occur that causes them to separate from each other, and ultimately there is a risk of abnormal function.

[0004] The Chinese utility model patent with the publication number of CN 219937395 U discloses a touch film FPC connection structure, including a body. A first conductive film is provided on the lower surface of the body, a PET film is provided above the first conductive film, a first bonding part is provided on the upper surface of one end of the first conductive film, a second bonding part is provided on the lower surface of one end of the PET film, the first conductive film and the PET film are connected through a first bonding layer, and an electrode reserved slot for inserting the FPC is formed between the first bonding part and the second bonding part. The utility model enhances the bonding force by simultaneously bonding one side and the other side of the FPC gold finger through the first bonding part and the second bonding part, and prevents the FPC from falling off from the bonding position. Although this technology can increase the bonding force by directly adhering through the bonding layer, this touch film FPC connection structure adds multiple bonding layers, which not only increases the thickness of the body, but also the bonding layer is directly arranged between the conductive film and the PET film. Not only is the bonding force small, but there is also a risk of the bonding layer overflowing and leaking glue, affecting the aesthetics. Summary of the Utility Model

[0005] Aiming at the above deficiencies in the prior art, the utility model provides a flexible touch structure, which can increase the bonding effect between the FPC and the bonding area, can also maintain the thickness of the touch structure, has no risk of overflowing and leaking glue, and is more aesthetically pleasing.

[0006] To achieve the above-mentioned utility model purpose, the technical solution adopted by the present utility model is as follows:

[0007] A flexible touch structure includes a touch sensor main body. There is a blank area on the side of the touch sensor main body, a bonding area is provided on the blank area, and a connecting member is connected to the bonding area; a grooving area for fixing the connecting member and the bonding area is formed in the area on the blank area opposite to the connecting member. A material for bonding the connecting member and the bonding area is provided in the grooving area, and the grooving area is arranged inside the projection of the connecting member on the touch sensor main body.

[0008] In this flexible touch structure, a grooving area for fixing the connecting member and the bonding area is formed in the area on the blank area opposite to the connecting member. By using the material for bonding the connecting member and the bonding area provided in the grooving area and arranging the grooving area inside the projection of the connecting member on the touch sensor main body, the connecting member and the bonding area are fixed by the material bonded in the grooving area. Since the bonded material is placed in the grooving area, the specific surface area is larger, thereby increasing the bonding force between the bonded material and the connecting member and the bonding area; at the same time, the grooving area is arranged inside the projection of the connecting member on the touch sensor main body, which can effectively avoid the risk of overflowing glue leakage and will not cause the overall coating of the bonding material layer on the connecting member and the bonding area, avoiding the increase in the overall thickness of the flexible touch structure and being more beautiful.

[0009] Further, gold fingers are provided at both the first end and the last end of the connecting member. The gold finger at the first end is connected to the bonding area, and the gold finger at the last end is connected to a control board provided on the LCM whole machine; the distance between the edge of the grooving area and the side line of the bonding area is greater than the alignment deviation between the gold finger at the first end on the connecting member and the bonding area.

[0010] The side line of the bonding area is the virtual contour line of the bonding area. The side lines of the bonding area exactly coincide with the side lines of the connecting member. At this time, the alignment deviation between the gold finger at the first end of the connecting member and the bonding pads of the bonding area is 0, that is, the two are accurately aligned and connected.

[0011] Further, the distance between the edge of the grooving area and the side line of the bonding area is greater than 0.5 mm.

[0012] Further, blank areas are provided on both the upper and lower surfaces of the touch sensor main body, and the projections of the grooving areas formed in the blank areas on the touch sensor main body do not coincide.

[0013] Further, a part of the blank area is disposed outside the side of the touch sensor body, and another part of the blank area is disposed inside the side of the touch sensor body. Wherein, the bonding area is disposed inside the side of the touch sensor body, and the grooving area is disposed outside the side of the touch sensor body.

[0014] Further, the blank area is disposed outside the side of the touch sensor body, wherein the bonding area and the grooving area are disposed outside the side of the touch sensor body; or, the blank area is disposed inside the side of the touch sensor body, wherein the bonding area and the grooving area are disposed inside the side of the touch sensor body.

[0015] Further, the material for bonding the connecting member and the bonding area is a UV type or thermosetting frame adhesive.

[0016] Further, the depth of the grooving area is 10%-40% of the thickness of the touch sensor body.

[0017] Preferably, the depth of the grooving area is 20%-30% of the thickness of the touch sensor body.

[0018] Further, the thickness of the material bonded between the connecting member and the bonding area does not exceed 1% of the depth of the grooving area.

[0019] Further, the grooving area is disposed in the middle of the area of the blank area opposite to the connecting member.

[0020] Further, the bottom of the groove body of the grooving area is one of a cube, a cuboid, a cylinder, a triangular prism or other polygonal prisms or a mesh groove body structure.

[0021] Further, the touch sensor body includes a substrate and a conductive layer disposed at one or both ends of the substrate.

[0022] The present invention also provides a touch display screen, including the above flexible touch structure.

[0023] The beneficial effects of the present invention are as follows:

[0024] (1) The flexible touch structure provided by the present invention has a grooving area opened inside the projection of the connecting member on the touch sensor body, with a larger specific surface area, thereby increasing the bonding force between the bonding material and the connecting member and the bonding area; it can increase the bonding effect between the connecting member and the bonding area and prevent the separation of the connecting member and the bonding area.

[0025] (2) The flexible touch structure provided by the present utility model has the bonded material placed in the grooved area, and the grooved area is arranged inside the projection of the connecting member on the touch sensor main body, which can effectively avoid the risk of glue overflow and leakage, and will not cause the overall coating of the bonding material layer on the connecting member and the binding area, avoid the increase in the overall thickness of the flexible touch structure, maintain the thickness of the touch structure, and be more beautiful.

[0026] (3) The flexible touch structure provided by the present utility model is simple and can be applied to various touch display screens. Description of the Drawings

[0027] Figure 1 It is a front perspective view of a structure of the flexible touch structure of the present utility model.

[0028] Figure 2 It is another front perspective view of a structure of the flexible touch structure of the present utility model.

[0029] Figure 3 It is still another front perspective view of a structure of the flexible touch structure of the present utility model.

[0030] Figure 4 It is a side perspective view of the flexible touch structure of the present utility model.

[0031] The reference numerals are as follows: 1 is the touch sensor main body; 11 is the base material; 12 is the conductive layer; 2 is the blank area; 3 is the binding area; 31 is the side line of the binding area; 4 is the connecting member; 5 is the grooved area; 51 is the groove edge. Detailed Embodiments

[0032] The following further describes the detailed embodiments of the present utility model with reference to the drawings. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. In order to make the content of the present utility model easier to be clearly understood, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

[0033] Some terms of the present utility model are explained as follows:

[0034] LCM (Liquid Crystal Module) whole machine: That is, LCD (Liquid Crystal Display) display module, liquid crystal module, which refers to a component assembled by liquid crystal display device, connecting member, peripheral circuits such as control and drive, PCB (Printed Circuit Board) circuit board, backlight, structural member, etc. There is a control board provided on the upper part and a gold finger is connected.

[0035] FPC (Flexible Printed Circuit): It refers to a flexible printed circuit board, which is a highly reliable and excellent flexible printed circuit board made of materials such as polyimide or polyester film as the base material.

[0036] Blank area: It refers to the area in the touch sensor body except the touch area and the wiring area, that is, the material used for the base material.

[0037] Embodiment 1

[0038] This embodiment provides a flexible touch structure, as Figures 1-4 shown, including a touch sensor body 1, the touch sensor body 1 includes a base material 11 and a conductive layer 12 provided at one or both ends of the base material 11. A blank area 2 is provided on the side of the touch sensor body 1, a bonding area 3 is provided on the blank area 2, a connecting member 4 is connected to the bonding area 3, and the connecting member 4 can be connected to the LCM whole machine; preferably, a gold finger is provided at the end of the connecting member 4, and the gold finger is connected to a control board provided on the LCM whole machine. A grooving area 5 for fixing the connecting member 4 and the bonding area 3 is opened in the area of the blank area 2 opposite to the connecting member 4, a material for bonding the connecting member 4 and the bonding area 3 is provided in the grooving area 5, and the grooving area 5 is arranged inside the projection of the connecting member 4 on the touch sensor body 1.

[0039] As an alternative solution, the connecting member 4 can adopt electrical connection components such as FPC or FFC (Flexible Flat Cable).

[0040] As an alternative solution, the material for bonding the connecting member 4 and the bonding area 3 is UV type or thermosetting frame glue. UV type frame glue is frame glue cured by UV light irradiation, and thermosetting frame glue is frame glue cured by heating.

[0041] In a specific implementation process, the flexible touch structure is provided with a grooving area 5 for fixing the connecting member 4 and the bonding area 3 in the area opposite to the connecting member 4 on the blank area 2. The grooving area 5 is provided with a material for bonding the connecting member 4 and the bonding area 3, and the grooving area 5 is arranged inside the projection of the connecting member 4 on the touch sensor body 1, so as to fix the connecting member 4 and the bonding area 3 through the material bonded in the grooving area 5. Since the bonded material is placed in the grooving area 5, the specific surface area is larger, thereby increasing the bonding force between the bonded material and the connecting member 4 and the bonding area 3; at the same time, the grooving area 5 is arranged inside the projection of the connecting member 4 on the touch sensor body 1, which can effectively avoid the risk of overflowing glue leakage, and will not cause the overall coating of the bonding material layer on the connecting member 4 and the bonding area 3, avoiding the increase of the overall thickness of the flexible touch structure and making it more beautiful.

[0042] Embodiment 2

[0043] On the basis of Embodiment 1, in order to further increase the bonding force between the bonding material and the connecting member 4 and the bonding area 3, as an optional solution, the depth of the grooving area 5 is set to 10%-40% of the thickness of the touch sensor body 1. Preferably, the depth of the grooving area 5 is set to 20%-30% of the thickness of the touch sensor body 1. More preferably, the depth of the grooving area 5 in this embodiment is set to 25% of the thickness of the touch sensor body 1. Setting the depth of the grooving area 5 to 10%-40% of the thickness of the touch sensor body 1 can, on the one hand, increase the specific surface area of the grooving area 5 and increase the bonding force between the bonded material and the connecting member 4 and the bonding area 3; on the other hand, it can effectively avoid the easy breakage of the flexible touch structure and the low durability caused by the too large depth of the grooving area 5.

[0044] As an optional solution, the thickness of the material bonded between the connecting member 4 and the bonding area 3 does not exceed 1% of the depth of the grooving area 5. Preferably, the thickness of the material bonded between the connecting member 4 and the bonding area 3 is 1% of the depth of the grooving area 5. At this thickness, it is the ideal value of the glue application amount, which can ensure that a part of the bonded material overflows and can also ensure the bonding force between the bonded material and the connecting member 4 and the bonding area 3.

[0045] As an optional solution, on the basis of the above solution, in order to further ensure the avoidance of the risk of overflowing glue leakage, gold fingers are provided at both the head end and the tail end of the connecting member 4. The head end gold finger is connected to the bonding area 3, and the tail end gold finger is connected to the control board provided on the LCM whole machine; the distance between the groove edge 51 of the grooving area 5 and the side line 31 of the bonding area is greater than the alignment deviation between the head end gold finger on the connecting member 4 and the bonding area 3.

[0046] Combined with the attached Figure 1 andFigure 2 , the side line 31 of the bonding area is the virtual contour line of the bonding area 3, and the side lines 31 of the bonding area coincide exactly with the side lines of the connecting member 4. At this time, the alignment deviation between the first-end gold fingers of the connecting member 4 and the bonding pads of the bonding area 3 is 0, that is, they are accurately aligned and connected with each other.

[0047] Preferably, the distance between the groove edge 51 of the grooving area 5 and the side line 31 of the bonding area is greater than 0.5 mm. Preferably, the distance between the groove edge 51 of the grooving area 5 and the side line 31 of the bonding area is 0.5 mm. When the distance between the groove edge 51 of the grooving area 5 and the side line 31 of the bonding area is 0.5 mm. The existing process offset tolerance is generally set at ±0.2 mm. In this regard, the retraction distance of the grooving area 5 is preferably 0.5 mm.

[0048] Embodiment 3

[0049] On the basis of Embodiment 2, combined with Figure 1 , Figure 2 and Figure 3 , in order to increase the diversity of the flexible touch structure and ensure its stability, as an optional solution, blank areas 2 are also provided on the upper and lower surfaces of the touch sensor body 1, and the projections of the grooving areas 5 opened in the blank areas 2 on the touch sensor body 1 do not coincide. The projections of the grooving areas 5 opened in the blank areas 2 on the touch sensor body 1 do not coincide, which can prevent the grooving areas 5 from overlapping on both sides of the surface of the touch sensor body 1, that is, there are grooving areas 5 in the relatively opposite parts on both sides of the same blank area 2, resulting in the flexible touch structure being easily broken.

[0050] As an optional solution, combined with Figure 1 , the blank area 2 is provided outside the side of the touch sensor body 1, wherein the bonding area 3 and the grooving area 5 are provided outside the side of the touch sensor body 1.

[0051] As an optional solution, combined with Figure 2 , the blank area 2 is provided inside the side of the touch sensor body 1, wherein the bonding area 3 and the grooving area 5 are provided inside the side of the touch sensor body 1.

[0052] As an optional solution, combined with Figure 3, a part of the blank area 2 is arranged outside the side of the touch sensor main body 1, and another part of the blank area 2 is arranged inside the side of the touch sensor main body 1. Among them, the bonding area 3 is arranged inside the side of the touch sensor main body 1, and the grooving area 5 is arranged outside the side of the touch sensor main body 1. Preferably, the blank area 2 is arranged on one side of the touch sensor main body 1; Preferably, the blank area 2 is arranged in the middle of one side of the touch sensor main body 1.

[0053] Embodiment 4

[0054] On the basis of Embodiments 1-3, further increase the bonding force between the bonding material and the connecting member 4 and the bonding area 3, and arrange the grooving area 5 in the middle of the area opposite to the connecting member 4 on the blank area 2; As an optional solution, the groove body of the grooving area 5 is a mesh groove body structure formed by one or any combination of a cube, a cuboid, a cylinder, a triangular prism or other polygonal prisms. Preferably, the groove body of the grooving area 5 is a mesh groove body structure composed of cubes, which is relatively simple in process and convenient for preparation and popularization.

[0055] Regarding the above embodiments, it should be noted that the specific model specifications of each component in the flexible touch structure in the above Embodiments 1-4 need to be selected according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in the field. The principle of the above devices that need to be powered and the connection method with the power supply are clear and easy to implement for those skilled in the art; The materials of the above components are common materials in the field. The present invention does not involve the improvement of materials, and those skilled in the art can arbitrarily select suitable materials. For example, the feasible materials for the base material 11 can be: polyethylene terephthalate (PET), polyethylene naphthalate (PEN), cellulose acetate (TAC), alicyclic hydrocarbon (COP), polymethyl methacrylate (PMMA), polyimide (PI), biaxially oriented polypropylene (BOPP), etc. Any other transparent material suitable for use as a touch sensor substrate. The conductive pattern in the conductive layer 12 can be copper, copper alloy, or other metals or metal alloys with excellent conductivity, so it will not be elaborated in detail here.

[0056] The above are only the preferred embodiments of the patent of the present invention, and do not constitute a limitation to the patent of the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the patent of the present invention shall be included in the protection scope of the patent of the present invention.

Claims

1. A flexible touch structure, characterized in that: The invention comprises a touch sensor body (1), wherein a blank area (2) is provided on the side of the touch sensor body (1), a binding area (3) is provided on the blank area (2), and the binding area (3) is connected to a connecting piece (4); a groove area (5) for fixing the connecting piece (4) and the binding area (3) is provided in an area on the blank area (2) opposite to the connecting piece (4), and a material for bonding the connecting piece (4) and the binding area (3) is provided in the groove area (5), and the groove area (5) is arranged on the inner side of the projection of the connecting piece (4) on the touch sensor body (1).

2. The flexible touch structure according to claim 1, characterized in that: The connecting member (4) is provided with gold fingers at both the head end and the tail end, and the head end gold fingers are connected to the binding area (3); the distance between the groove edge (51) of the groove area (5) and the side line (31) of the binding area is greater than the alignment deviation between the head end gold fingers on the connecting member (4) and the binding area (3).

3. The flexible touch structure according to claim 1, characterized in that: The upper and lower surfaces of the touch sensor body (1) are both provided with blank areas (2), and the projections of the groove areas (5) provided in the blank areas (2) on the touch sensor body (1) do not overlap.

4. The flexible touch structure according to claim 1, characterized in that: A portion of the blank area (2) is arranged on the outer side of the side of the touch sensor body (1), and another portion of the blank area (2) is arranged on the inner side of the side of the touch sensor body (1), wherein the binding area (3) is arranged on the inner side of the side of the touch sensor body (1), and the groove area (5) is arranged on the outer side of the side of the touch sensor body (1).

5. The flexible touch structure according to claim 1, characterized in that: The blank area (2) is arranged on the outer side of the side of the touch sensor body (1), wherein the binding area (3) and the groove area (5) are arranged on the outer side of the side of the touch sensor body (1); or, the blank area (2) is arranged on the inner side of the side of the touch sensor body (1), wherein the binding area (3) and the groove area (5) are arranged on the inner side of the side of the touch sensor body (1).

6. The flexible touch structure according to any one of claims 1 to 5, characterized in that: The depth of the groove area (5) is 10%-40% of the thickness of the touch sensor body (1).

7. The flexible touch structure according to any one of claims 1 to 5, characterized in that: The thickness of the material bonded between the connecting member (4) and the binding area (3) does not exceed 1% of the depth of the grooved area (5).

8. The flexible touch structure according to claim 7, characterized in that: The material used to bond the connecting piece (4) and the binding area (3) is a UV-type or thermosetting sealant.

9. The flexible touch structure according to any one of claims 1 to 5, characterized in that: The groove body of the grooved area (5) is a cube, a cuboid, a cylinder, a triangular prism or other polygonal prisms, or a mesh groove body structure.

10. A touch display screen, characterized in that: The flexible touch structure comprises any one of claims 1 to 9.

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