Integrated black DITO touch screen structure

Abstract

According to the integrated black DITO touch screen structure, an optical film is arranged on the surface of a touch substrate, a cover plate function and an optical coating are integrated on the optical film, the thickness of equipment is reduced, the lightness and thinness of the equipment are improved, the optical film is a smoked film, the transmittance of the optical film is about 40%, the integrated black effect can be improved according to product requirements, and the product quality is improved. According to the matching requirement of the black ink and the machine shell, different transmittance matching is adopted, then the interlayer adhesive film is attached to the touch substrate, in this way, a glass cover plate can be omitted, glass can be stuck and cannot be splashed out when damaged, the safety of a touch screen is improved, and good practical value and economic value are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, and particularly relates to an integrated black DITO touch screen structure. Background Art

[0002] In the traditional touch screen structure, a glass cover plate is usually used as a protective layer, and then an optical coating is applied on the glass cover plate to achieve the touch function. However, this structure has some problems, such as increasing the screen thickness and potential safety hazards such as easy splashing when the glass is broken. Summary of the Utility Model

[0003] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides an integrated black DITO touch screen structure. By setting an optical film on the surface of the touch substrate, the cover plate function and the optical coating are integrated on the optical film, reducing the thickness of the device and improving the lightness and thinness of the device. The optical film is a smoked film with a transmittance of about 40%. According to the product requirements, the integrated black effect can be improved. According to the matching needs of the black ink and the machine shell, different transmittance combinations are used, and then a sandwich adhesive film is attached to the touch substrate. This not only saves a glass cover plate, but also makes the glass stick when it is broken and will not splash out, improving the safety of the touch screen, and having good practical value and economic value.

[0004] The technical problems to be solved by the utility model are realized through the following technical solutions: an integrated black DITO touch screen structure, including,

[0005] An optical film, the optical film is a smoked optical film; a border ink area is provided on the back of the optical film;

[0006] A touch substrate, an ITO sensing layer and an ITO driving layer are respectively provided on the upper and lower surfaces corresponding to the border ink area;

[0007] An induction silver paste trace is provided on the periphery of the ITO sensing layer, the induction silver paste trace is located at the edge of the touch substrate and the induction silver paste trace overlaps with the ITO sensing layer;

[0008] A first insulating oil covers the upper surface of the induction silver paste trace;

[0009] The optical film is attached to the upper surface of the touch substrate through a sandwich adhesive film; the sandwich adhesive film is located on the upper surface of the first insulating oil.

[0010] As a preferred solution of the integrated black DITO touch screen structure provided by the utility model, the area enclosed by the border ink area is the screen display area, and the area covered by the border ink area is the non-display area.

[0011] As a preferred embodiment of the integrated black DITO touch screen structure provided by the present utility model, a driving silver paste trace is provided around the ITO driving layer. The driving silver paste trace is located at the edge of the touch substrate and the driving silver paste trace overlaps with the ITO driving layer.

[0012] As a preferred embodiment of the integrated black DITO touch screen structure provided by the present utility model, the sensing silver paste trace and the driving silver paste trace are bonded and connected to the FPC through the ACF.

[0013] As a preferred embodiment of the integrated black DITO touch screen structure provided by the present utility model, a second insulating oil covers the lower surface of the driving silver paste trace.

[0014] As a preferred embodiment of the integrated black DITO touch screen structure provided by the present utility model, a display screen is provided on the lower surface of the touch substrate. The display screen is bonded to the touch substrate through a transparent optical adhesive.

[0015] As a preferred embodiment of the integrated black DITO touch screen structure provided by the present utility model, the display screen includes a upper glass substrate and a lower glass substrate stacked in sequence.

[0016] As a preferred embodiment of the integrated black DITO touch screen structure provided by the present utility model, the upper glass substrate and the lower glass substrate are bonded through a frame adhesive provided around the sides. A liquid crystal material is filled in the space enclosed by the upper glass substrate, the frame adhesive and the lower glass substrate.

[0017] As a preferred embodiment of the integrated black DITO touch screen structure provided by the present utility model, an upper polarizer is provided on the side of the upper glass substrate away from the lower glass substrate, and a lower polarizer is provided on the side of the lower glass substrate away from the upper glass substrate.

[0018] As a preferred embodiment of the integrated black DITO touch screen structure provided by the present utility model, a backlight module is provided on the lower surface of the display screen. The backlight module is located on the side of the lower polarizer away from the lower glass substrate.

[0019] The utility model has the following beneficial effects: An integrated black DITO touch screen structure includes an optical film, and the optical film is a smoked optical film; a border ink area is arranged on the back surface of the optical film; for the touch substrate, ITO sensing layers and ITO driving layers are respectively arranged on the upper and lower surfaces corresponding to the border ink area; an inductive silver paste trace is arranged on the periphery of the ITO sensing layer, the inductive silver paste trace is located at the edge of the touch substrate and the inductive silver paste trace is lapped with the ITO sensing layer; a first insulating oil covers the upper surface of the inductive silver paste trace; the optical film is attached to the upper surface of the touch substrate through an interlayer adhesive film; the interlayer adhesive film is located on the upper surface of the first insulating oil. In this application, by arranging an optical film on the surface of the touch substrate, the functions of the cover plate and the optical coating are integrated on the optical film, reducing the thickness of the device and improving the lightness and thinness of the device. Among them, the optical film is a smoked film with a transmittance of about 40%. According to the product requirements, the integrated black effect can be improved. According to the matching needs of the black ink and the casing, different transmittance combinations are adopted, and then an interlayer adhesive film is attached to the touch substrate. This can not only save a glass cover plate, but also make the glass stick together and not splash out when it is broken, improving the safety of the touch screen, and having good practical value and economic value. Description of the Drawings

[0020] In order to more clearly illustrate the solutions in this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of the integrated black DITO touch screen structure provided by the utility model;

[0022] Figure 2 It is a stacked schematic diagram of the integrated black DITO touch screen structure provided by the utility model;

[0023] Figure 3 It is a front view of the integrated black DITO touch screen structure provided by the utility model;

[0024] Figure 4 It is a schematic diagram of the display screen structure of the integrated black DITO touch screen structure provided by the utility model.

[0025] 1. Optical film; 11. Border ink area; 12. Screen display area; 2. Touch substrate; 3. ITO sensing layer; 31. Sensing silver paste trace; 4. ITO driving layer; 41. Driving silver paste trace; 51. Interlayer adhesive film; 52. Transparent optical adhesive; 61. First insulating oil; 62. Second insulating oil; 7. Display screen; 701. Upper glass substrate; 702. Lower glass substrate; 703. Frame adhesive; 704. Liquid crystal material; 705. Upper polarizer; 706. Lower polarizer; 8. FPC; 9. Backlight module. Detailed implementation manners

[0026] The following describes the present utility model in detail with reference to the accompanying drawings and embodiments. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, but should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0028] In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0029] In the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", "setting", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may also be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Embodiment 1

[0031] AsFigure 1 As shown in the figure, the present utility model provides an integrated black DITO touch screen structure, including

[0032] An optical film 1, the optical film 1 is a smoked optical film; a border ink area 11 is provided on the back surface of the optical film 1;

[0033] A touch substrate 2, and ITO sensing layers 3 and ITO driving layers 4 are respectively provided on the upper and lower surfaces corresponding to the border ink area 11;

[0034] An induction silver paste trace 31 is provided on the periphery of the ITO sensing layer 3, the induction silver paste trace 31 is located at the edge of the touch substrate 2 and the induction silver paste trace 31 overlaps with the ITO sensing layer 3;

[0035] A first insulating oil 61 is covered on the upper surface of the induction silver paste trace 31;

[0036] The optical film 1 is adhered to the upper surface of the touch substrate 2 through an interlayer adhesive film 51; the interlayer adhesive film 51 is located on the upper surface of the first insulating oil 61.

[0037] Wherein the optical film is a smoked film and the transmittance is about 40%. According to the product requirements, the integrated black effect can be improved. According to the matching needs of the black ink and the casing, different transmittance combinations are adopted.

[0038] In this embodiment, by providing the optical film 1 on the surface of the touch substrate 2, the cover function and the optical coating are integrated on the optical film 1, reducing the thickness of the device and improving the lightness and thinness of the device. Then, using the interlayer adhesive film to attach to the touch substrate 2, this not only saves a glass cover plate, but also makes the glass stick together when broken and will not fly out, improving the safety of the touch screen, and has good practical value and economic value.

[0039] In another preferred solution of this embodiment, the interlayer adhesive film 51 is a PVB adhesive film. The PVB adhesive film is a copolymer of polyvinyl alcohol acrylate, which has excellent impact resistance and bonding performance, can effectively absorb and disperse the impact force, thereby improving the impact resistance. At the same time, the PVB adhesive film has a strong adhesion force, and the broken glass will be stuck and will not fly out, playing the role of safety glass.

[0040] The bonding principle of the PVB adhesive film and the glass: The hydrogen bond between SiOH in the glass and COH groups in the PVB adhesive film forms the bonding force, so it has better bonding ability than ordinary OCA / OCR, and there will be no glass fragments falling off during collisions.

[0041] Furthermore, as Figure 3As shown, the area enclosed by the border ink area 11 is the screen display area 12, and the area covered by the border ink area 11 is the non-display area. In this embodiment, the border ink area 11 is printed on the back of the optical film 1 by screen printing technology or UV transfer printing technology, and the border ink area 11 serves as a decorative light-shielding function to block the silver paste traces below.

[0042] Embodiment Two

[0043] In this embodiment, a driving silver paste trace 41 is provided outside the ITO driving layer 4. The driving silver paste trace 41 is located at the edge of the touch substrate 2 and the driving silver paste trace 41 overlaps with the ITO driving layer 4.

[0044] Furthermore, the sensing silver paste trace 31 and the driving silver paste trace 41 are bound and connected to the FPC8 through ACF. In this embodiment, the sensing silver paste trace 31 and the driving silver paste trace 41 are electrically connected to the FPC8 through ACF. Among them, ACF is a conductive tape used to bind the ITO sensing layer 3 and the ITO driving layer 4 to the FPC together. ACF has conductivity and can establish an electrical connection between the ITO pattern layer and the FPC8.

[0045] The silver paste traces on the front and back sides of the touch substrate 2 are bound and positioned and conductively connected to the FPC binding position through ACF. ACF tape usually has the bonding characteristics of high temperature and high pressure, which can ensure a stable electrical connection. Through the binding of ACF and the FPC8, the touch signal of the ITO pattern can be transmitted to the FPC8, and then connected to other circuits or processors to achieve the touch function; it should be noted that during the binding process, it is necessary to ensure the alignment and bonding quality between the ACF and the FPC8 to ensure a reliable electrical connection.

[0046] Furthermore, a second insulating oil 62 covers the lower surface of the driving silver paste trace 41. The second insulating oil 62 serves to protect the driving silver paste trace 41.

[0047] Embodiment Three

[0048] As Figure 2 shown, a display screen 7 is provided on the lower surface of the touch substrate 2, and the display screen 7 is bonded to the touch substrate 2 through a transparent optical adhesive 52.

[0049] In this embodiment, the transparent optical adhesive 52 is preferably an OCA optical adhesive.

[0050] As Figure 4 shown, the display screen 7 includes a upper glass substrate 701 and a lower glass substrate 702 stacked in sequence.

[0051] Further, the upper glass substrate 701 and the lower glass substrate 702 are bonded by a frame adhesive 703 provided around the sides, and the space enclosed by the upper glass substrate 701, the frame adhesive 703, and the lower glass substrate 702 is filled with a liquid crystal material 704.

[0052] Further, a upper polarizer 705 is provided on the side of the upper glass substrate 701 away from the lower glass substrate 702, and a lower polarizer 706 is provided on the side of the lower glass substrate 702 away from the upper glass substrate 701. A polarizer has a fixed polarization axis and only allows light with a vibration direction consistent with the polarization direction to pass through, and absorbs light with a vibration direction perpendicular to the polarization axis, which is used to convert non-polarized natural light into polarized light, allowing light perpendicular to the electric field direction to pass through, so that the liquid crystal display panel can display images normally.

[0053] In this embodiment, the display screen 7 is filled with a liquid crystal material 704. Among them, the liquid crystal is a special substance that has properties between those of a liquid and a solid. Liquid crystal molecules are arranged orderly without external influence, but when subjected to external actions such as an electric field, temperature, or pressure, the arrangement structure of the liquid crystal molecules will change, resulting in different optical properties. Liquid crystal materials are usually composed of organic molecules or polymers, and these molecules have a long shape, enabling them to form a specific arrangement structure in the liquid crystal state. According to the arrangement method of liquid crystal molecules, liquid crystals can be divided into various types, including nematic liquid crystals, twisted nematic liquid crystals, cholesteric liquid crystals, etc. Liquid crystal materials are widely used in display technologies, especially in liquid crystal display screens. In a liquid crystal display screen, the liquid crystal material is filled between two pieces of glass to form a liquid crystal layer. When an electric field is applied, the arrangement structure of the liquid crystal molecules changes, thereby changing the polarization state of the light passing through the liquid crystal layer and realizing the display of images.

[0054] Further, a backlight module 9 is provided on the lower surface of the display screen 7, and the backlight module 9 is located on the side of the lower polarizer 706 away from the lower glass substrate 702. The backlight module 9 is a device that provides backlight illumination, enabling the display screen 7 to still display clear images and text in a dark environment; the backlight module 9 can use light sources such as LEDs, and through the reflection and conduction of light, the images on the display screen 7 can be seen by the observer.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and are not intended to limit them. Although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the embodiments of the present invention can still be modified or equivalently replaced, and these modifications or equivalent replacements do not make the modified technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated black DITO touch screen structure, characterized in that: include, An optical film (1), wherein the optical film (1) is a smoked optical film; a frame ink area (11) is provided on the back of the optical film (1); A touch substrate (2), wherein an ITO sensing layer (3) and an ITO driving layer (4) are respectively provided on the upper and lower surfaces corresponding to the frame ink area (11); A sensing silver paste wiring (31) is provided on the periphery of the ITO sensing layer (3), the sensing silver paste wiring (31) is located at the edge of the touch substrate (2), and the sensing silver paste wiring (31) overlaps the ITO sensing layer (3); The upper surface of the inductive silver paste wiring (31) is covered with a first insulating oil (61); The optical film (1) is bonded to the upper surface of the touch substrate (2) via an interlayer adhesive film (51); the interlayer adhesive film (51) is located on the upper surface of the first insulating oil (61).

2. The integrated black DITO touch screen structure according to claim 1, characterized in that: The area enclosed by the frame ink area (11) is the screen display area (12), and the area covered by the frame ink area (11) is the non-display area.

3. The integrated black DITO touch screen structure according to claim 1, characterized in that: A driving silver paste wiring (41) is provided on the periphery of the ITO driving layer (4), the driving silver paste wiring (41) is located at the edge of the touch substrate (2), and the driving silver paste wiring (41) overlaps the ITO driving layer (4).

4. The integrated black DITO touch screen structure according to claim 3, characterized in that: The sensing silver paste wiring (31) and the driving silver paste wiring (41) are bound and connected via ACF and FPC (8).

5. The integrated black DITO touch screen structure according to claim 3, characterized in that: The lower surface of the driving silver paste wiring (41) is covered with second insulating oil (62).

6. The integrated black DITO touch screen structure according to claim 1, characterized in that: A display screen (7) is provided on the lower surface of the touch substrate (2), and the display screen (7) is bonded to the touch substrate (2) via a transparent optical adhesive (52).

7. The integrated black DITO touch screen structure according to claim 6, characterized in that: The display screen (7) comprises an upper glass substrate (701) and a lower glass substrate (702) which are stacked in sequence.

8. The integrated black DITO touch screen structure according to claim 7, characterized in that: The upper glass substrate (701) and the lower glass substrate (702) are bonded together by means of a frame glue (703) provided around the sides, and a space enclosed by the upper glass substrate (701), the frame glue (703) and the lower glass substrate (702) is filled with liquid crystal material (704).

9. The integrated black DITO touch screen structure according to claim 7, characterized in that: An upper polarizer (705) is provided on a side of the upper glass substrate (701) away from the lower glass substrate (702), and a lower polarizer (706) is provided on a side of the lower glass substrate (702) away from the upper glass substrate (701).

10. The integrated black DITO touch screen structure according to claim 9, characterized in that: A backlight module (9) is provided on the lower surface of the display screen (7); the backlight module (9) is located on a side of the lower polarizer (706) facing away from the lower glass substrate (702).

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