Touch display module with drilling structure

Abstract

The utility model discloses a touch display module with a drilling structure, which comprises a protective cover plate and a display screen, the protective cover plate and the display screen are oppositely attached and fixed through frame glue, and an air layer is arranged between the protective cover plate and the display screen; the display screen is provided with a drilling structure penetrating in the thickness direction of the display screen, and the drilling structure is communicated with the air layer; a transparent electrode layer is arranged on the surface of the side, facing the protective cover plate, of the display screen, and a touch electrode pattern is formed on the transparent electrode layer. The touch display module avoids poor fitting when the display screen is integrated with a touch function.

Description

Technical Field

[0001] The utility model relates to display technology, in particular to a touch display module with a drilling structure. Background Art

[0002] Smartwatches are booming, and an increasing number of products are incorporating displays into displays for devices like watches and meters. However, most of these displays are purely electronic, meaning both the hands and dials are electronic. As people's desire for a more user-friendly experience with electronic products and their curiosity for new technologies grows, the market demand for displays with mechanical pointers is also growing. Furthermore, the automotive industry is increasingly demanding displays paired with mechanical pointers to replace traditional instruments.

[0003] In order to accommodate a mechanical pointer, the display needs to be drilled and the mechanical pointer placed in the air layer between the protective cover and the display during assembly. At this point, if the touch function is to be integrated, the touch screen needs to be bonded to the display. When a flexible film is used as the substrate for the touch screen in order to reduce the thickness of the product, it is very difficult to bond the flexible touch screen to the display. The current bonding yield is only about 30%. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a touch display module with a drilling structure to avoid poor fitting when the display screen is integrated with a touch function.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0006] A touch display module with a drilling structure includes a protective cover plate and a display screen, wherein the protective cover plate and the display screen are relatively fixed by frame glue, and an air layer is provided between the protective cover plate and the display screen; the display screen is provided with a drilling structure penetrating along its thickness direction, and the drilling structure is connected to the air layer; a transparent electrode layer is provided on the surface of the display screen on the side facing the protective cover plate, and a touch electrode pattern is formed on the transparent electrode layer.

[0007] Furthermore, the transparent electrode layer is an ITO electrode layer, an AZO electrode layer or a ZnO electrode layer.

[0008] Furthermore, the frame glue is a light-shielding tape or light-shielding foam.

[0009] Furthermore, a transparent protective layer is provided on the surface of the transparent electrode layer facing the protective cover plate.

[0010] Furthermore, the transparent protective layer includes at least one of a silicon oxide film layer, a silicon nitride film layer, a silicon oxynitride film layer and a diamond-like carbon film layer.

[0011] Furthermore, the protective cover includes a visible area and a frame area, and the frame area surrounds the visible area; the display screen includes a display area and a non-display area, and the non-display area surrounds the display area, and the drilling structure is located in the display area; the visible area corresponds to the display area, and the frame area corresponds to the non-display area.

[0012] Furthermore, a frame ink is provided on the frame area of ​​the surface of the protective cover plate facing the display screen, and the frame glue is adhered to the frame ink.

[0013] Furthermore, the display screen is provided with a first light-shielding layer on the inner wall of the drilling structure.

[0014] Furthermore, the touch display module further includes a mechanical pointer, which includes a pointer portion disposed in the air layer and a rotation shaft disposed in the drilling structure, wherein the pointer portion is vertically connected to the rotation shaft.

[0015] Furthermore, a second light-shielding layer is provided on the outer wall of the rotating shaft.

[0016] The utility model has the following beneficial effects: the touch display module of the utility model uses the display screen as the substrate of the transparent electrode layer to produce the touch electrode pattern; after the display screen is produced and drilled, the transparent electrode target material is directly formed into a film on the display side surface of the display screen by magnetron sputtering to obtain the transparent electrode layer, and then the transparent electrode layer is etched by yellow light process to obtain the touch electrode pattern, so as to integrate the touch function on the display screen; the touch display module of the utility model avoids the problem of poor bonding when the touch function is integrated into the display screen because the touch electrode pattern is not first produced on a flexible film and then attached to the display screen, and the touch display module of the utility model has a smaller thickness because the flexible film does not exist. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a diagram of the stacking structure of the touch display module in the first embodiment provided by the present invention.

[0018] Figure 2 This is a diagram of the stacking structure of the touch display module in the second embodiment provided by the present invention.

[0019] Figure 3 This is a diagram of the stacking structure of the touch display module in the third embodiment provided by the present invention.

[0020] Figure 4 This is a diagram of the stacking structure of the touch display module in the fourth embodiment provided by the present utility model. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first," "second," or "third" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0024] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," "fixed," and "set" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances. Example 1

[0025] like Figure 1As shown, a touch display module with a drilling structure includes a protective cover plate 1 and a display screen 2, wherein the protective cover plate 1 and the display screen 2 are relatively fixed by a frame glue 3, and an air layer a is provided between the protective cover plate 1 and the display screen 2; the display screen 2 is provided with a drilling structure 21 penetrating along the thickness direction thereof, and the drilling structure 21 is connected to the air layer a; a transparent electrode layer 4 is provided on the surface of the display screen 2 on the side facing the protective cover plate 1, and the transparent electrode layer 4 is formed with a touch electrode pattern.

[0026] The touch display module of the present invention uses the display screen 2 as the substrate of the transparent electrode layer 4 to produce the touch electrode pattern; after the display screen 2 is completed and drilled, the transparent electrode target material is directly formed into a film on the display side surface of the display screen 2 by magnetron sputtering to obtain the transparent electrode layer 4, and then the transparent electrode layer 4 is etched by yellow light process to obtain the touch electrode pattern to integrate the touch function on the display screen 2; the touch display module of the present invention avoids the problem of poor bonding when the touch function is integrated on the display screen 2 because the touch electrode pattern is not first produced on a flexible film and then attached to the display screen 2. In addition, the touch display module of the present invention has a smaller thickness because the flexible film does not exist.

[0027] In this embodiment, the transparent electrode layer 4 may be, but is not limited to, an ITO electrode layer, an AZO electrode layer, or a ZnO electrode layer.

[0028] The frame glue 3 can be, but is not limited to, a light-shielding tape or light-shielding foam. In this embodiment, the frame glue 3 is a black tape or black foam.

[0029] The function of the frame glue 3 is not only to bond and fix the protective cover 1 and the display screen 2 to form the air layer a between the protective cover 1 and the display screen 2, but also to block light to prevent the display light from the display screen 2 from leaking through the side of the air layer a.

[0030] The protective cover plate 1 includes a visible area and a frame area, and the frame area surrounds the visible area; the display screen 2 includes a display area and a non-display area, and the non-display area surrounds the display area. The drilling structure 21 is located in the display area; the visible area corresponds to the display area to allow the display light of the display screen 2 to pass through, and the frame area corresponds to the non-display area to block the non-display area of ​​the display screen 2.

[0031] A frame ink 11 is provided on the frame area of ​​the surface of the protection cover plate 1 facing the display screen 2 , and the frame glue 3 is adhered to the frame ink 11 .

[0032] The frame ink 11 is used to define the visible area of ​​the protective cover 1 to facilitate alignment and lamination of the protective cover 1 and the display screen 2 , and is also used to shield the non-display area of ​​the display screen 2 to prevent users from seeing the non-display area of ​​the display screen 2 .

[0033] Preferably, the frame ink 11 is black ink.

[0034] In this embodiment, the display screen 2 is an LCD screen or an OLED screen. Example 2

[0035] As an optimization solution of embodiment 1, in this embodiment, if Figure 2 As shown, a transparent protective layer 5 is provided on the surface of the transparent electrode layer 4 facing the protective cover plate 1 .

[0036] The touch display module of the present invention is provided with the transparent protective layer 5 to protect the touch electrode pattern on the display screen 2, so as to prevent the touch electrode pattern from being scratched, contaminated by foreign objects, and oxidized by long-term exposure to air during the transportation, transit and assembly process before the display screen 2 and the protective cover plate 1 are bonded.

[0037] The transparent protective layer 5 includes at least one of a silicon oxide film layer, a silicon nitride film layer, a silicon oxynitride film layer and a diamond-like carbon film layer. Example 3

[0038] As an optimization solution of embodiment 1 or embodiment 2, in this embodiment, if Figure 3 As shown, the display screen 2 is provided with a first light shielding layer 6 on the inner wall of the drilling structure 21 .

[0039] The touch display module of the present invention provides the first light shielding layer 6 to shield the inner wall of the drilling structure 21 , thereby preventing light in the display screen 2 from leaking from the inner wall of the drilling structure 21 .

[0040] The first light shielding layer 6 may be, but is not limited to, black ink, or a blackened metal oxide layer, such as a titanium oxide layer. Example 4

[0041] As an optimization solution of embodiment 1, embodiment 2 or embodiment 3, in this embodiment, if Figure 4 As shown, the touch display module further includes a mechanical pointer 7 , which includes a pointer portion 71 disposed in the air layer a and a rotation shaft 72 disposed in the drilling structure 21 , wherein the pointer portion 71 is vertically connected to the rotation shaft 72 .

[0042] Preferably, a second light-shielding layer 8 is provided on the outer wall of the rotating shaft 72 .

[0043] The touch display module of the present invention is provided with the second shading layer 8 to perform shading treatment on the surface of the rotating shaft 72 of the mechanical pointer 7, thereby preventing the light in the display screen 2 from leaking from the inner wall of the drilling structure 21 and being reflected by the surface of the rotating shaft 72 and emitted into the air layer a.

[0044] The second light-shielding layer 8 may be, but is not limited to, black ink, or a blackened metal oxide layer, such as a titanium oxide layer.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention rather than to limit them. Although the embodiments of the present invention are described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solutions of the embodiments of the present invention can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A touch display module with a drilling structure, comprising a protective cover plate and a display screen, wherein the protective cover plate and the display screen are relatively fixed by a frame glue, and an air layer is provided between the protective cover plate and the display screen; the display screen is provided with a drilling structure penetrating along the thickness direction thereof, and the drilling structure is connected to the air layer; characterized in that: A transparent electrode layer is disposed on a surface of the display screen facing the protective cover plate, and a touch electrode pattern is formed on the transparent electrode layer.

2. The touch display module according to claim 1, characterized in that: The transparent electrode layer is an ITO electrode layer, an AZO electrode layer or a ZnO electrode layer.

3. The touch display module according to claim 1, characterized in that: The frame glue is a light-shielding tape or a light-shielding foam.

4. The touch display module according to claim 1, characterized in that: A transparent protective layer is arranged on a surface of the transparent electrode layer facing the protective cover plate.

5. The touch display module according to claim 4, characterized in that: The transparent protective layer includes at least one of a silicon oxide film layer, a silicon nitride film layer, a silicon oxynitride film layer and a diamond-like carbon film layer.

6. The touch display module according to claim 1, characterized in that: The protective cover plate includes a visible area and a frame area, and the frame area surrounds the visible area; the display screen includes a display area and a non-display area, and the non-display area surrounds the display area, and the drilling structure is located in the display area; the visible area corresponds to the display area, and the frame area corresponds to the non-display area.

7. The touch display module according to claim 6, characterized in that: A frame ink is provided on the frame area of ​​the surface of the protection cover plate facing the display screen, and the frame glue is bonded to the frame ink.

8. The touch display module according to claim 1, characterized in that: The display screen is provided with a first light shielding layer on the inner wall of the drilling structure.

9. The touch display module according to claim 1, characterized in that: The touch display module further includes a mechanical pointer, which includes a pointer portion disposed in the air layer and a rotation shaft disposed in the drilling structure, wherein the pointer portion is vertically connected to the rotation shaft.

10. The touch display module according to claim 9, characterized in that: A second light shielding layer is provided on the outer wall of the rotating shaft.

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