Narrow-frame touch screen structure and manufacturing method

Abstract

The invention relates to a narrow-bezel touch screen structure and a manufacturing method, the narrow-bezel touch screen structure comprises an auxiliary pressing frame and a narrow-bezel touch screen structure, an auxiliary pressing structure is arranged in the auxiliary pressing frame, and the narrow-bezel touch screen structure is provided with a composite adhesive structure; the narrow-frame touch screen structure comprises a first-layer glass body, and a first-layer glass PIN area is fixedly connected into the first-layer glass body. According to the narrow-bezel touch screen structure and the manufacturing method, the narrow-bezel touch screen structure is extruded and fixed by the pressing plate through the arrangement of the spring, the displacement of the auxiliary pressing plate in the left-right direction is controlled through the arrangement of the sliding groove and the sliding block, and the narrow-bezel touch screen structure can be conveniently loosened; the width and the distance of the edge line manufactured by the yellow light process of the first layer of glass body are narrower, the process of etching the I TO glass of the second layer of glass body is mature, and the requirement of a narrow frame is met by reducing the width and the distance of the edge line.

Description

Technical Field

[0001] The present invention relates to the field of touch screen technology, and in particular to a narrow-frame touch screen structure and a manufacturing method thereof. Background Art

[0002] With the development of science and technology, smart handheld electronic devices such as mobile phones and tablets can be seen everywhere in our lives. Most of these devices use touch screens for collection and identification and interaction. The scope of touch screen use is quite wide, including consumer, education, home, industrial control and outdoor. Different application fields have different requirements and choices for product appearance and performance. Increasing the proportion of the screen on the operating surface gives users more visual experience, and the concept of narrow bezel is derived from this.

[0003] The existing narrow frame is more complicated to prepare, and the existing narrow frame touch screen is mostly bonded by adhesive during preparation. However, when adhesive is used for bonding, most of them cannot be positioned and bonded, which reduces the bonding rate. Therefore, we propose a narrow frame touch screen structure and manufacturing method to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a narrow-border touch screen structure and a manufacturing method, which have the advantage of good bonding effect and solve the problem that the existing narrow-border touch screens are mostly bonded with adhesives during preparation, but most of them cannot be positioned when bonded with adhesives, which reduces the bonding rate.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions: a narrow-frame touch screen structure, comprising an auxiliary pressure frame and a narrow-frame touch screen structure, wherein the auxiliary pressure frame is provided with an auxiliary pressure structure, and the narrow-frame touch screen structure is provided with a composite adhesive structure;

[0008] The narrow-frame touch screen structure includes a first-layer glass body, a first-layer glass PIN area is fixedly connected inside the first-layer glass body, a first-layer glass overlap area is fixedly installed inside the first-layer glass body, a first-layer glass edge routing line 1 is fixedly connected outside the first-layer glass overlap area on the left and right sides, and a first-layer glass edge routing line 2 is fixedly connected outside the first-layer glass overlap area at the bottom, and the narrow-frame touch screen structure includes a second-layer glass body, a second-layer glass driving overlap area is fixedly connected inside the second-layer glass body, a horizontal and vertical overlap sensing area is fixedly installed inside the second-layer glass body, and a second-layer glass sensing overlap area is fixedly installed outside the second-layer glass body;

[0009] The auxiliary pressure structure includes an auxiliary pressure plate movably installed on the outside of the auxiliary pressure frame, the auxiliary pressure plate, the back of which is provided with a slide groove, two pressure plates movably installed on the back of the auxiliary pressure plate, and a spring fixedly installed between opposite sides of the two pressure plates.

[0010] Furthermore, a sliding cavity is provided on the front side of the auxiliary pressure frame, and the inner surface of the sliding cavity is slidably connected to the outer surface of the auxiliary pressure plate.

[0011] Furthermore, the composite adhesive structure includes a first-region transparent double-sided adhesive and a second-region double-sided adhesive, and the first-region transparent double-sided adhesive surrounds the outside of the second-region double-sided adhesive.

[0012] Furthermore, a sliding block slidably connected to the inner surface of the slide groove is fixedly installed on the front side of the pressure plate.

[0013] Furthermore, the slide groove is placed horizontally.

[0014] Furthermore, the number of the sliding cavities is set to four and they are distributed in a quadrilateral shape, and two auxiliary pressure plates are distributed inside the sliding cavity.

[0015] A method for manufacturing a narrow-frame touch screen structure comprises the following steps:

[0016] A: Circuit production on the first layer of glass:

[0017] Step 1): Select a large piece of reinforced substrate according to the OGS equipment;

[0018] Step 2): Spray the first layer of black ink with a thickness of 4-6um on the first layer of glass body through the Inject command; hollow out the viewing area and functional holes; and the distance between two adjacent small pieces is 0.7mm:

[0019] Step 3): magnetron sputtering is used to coat the large piece that has been injected with molybdenum, aluminum and molybdenum;

[0020] Step 4): Use yellow light process to make edge routing and PIN area, edge line width 16um, line spacing 18um; edge line overlap area 0.1*0.2mm;

[0021] Step 5): On the completed circuit, an insulating protective layer OC is made by yellow light process;

[0022] Step 6): Cut the large piece into small pieces, CNC profile, and apply the second layer of ink and other functional inks by silk screen printing;

[0023] Step 7): Surface treatment of the operating surface;

[0024] Step 8): Bind FPC to PIN area;

[0025] B: Circuit production on the second layer of glass:

[0026] Step 1): Select double-sided ITO glass and etch circuits on both sides using silk screen etching paste;

[0027] Step 2): The upper circuit reserves a lap area including the lower circuit, and the upper circuit reserved area is connected to the lower circuit through the mounting hole;

[0028] C: Preparation of composite adhesive:

[0029] Step 1): The area within the visual area extending 0.5-0.8 mm is the first area, i.e., the first area is transparent double-sided tape;

[0030] Step 2): The other areas outside the first area are the second area, i.e., the second area double-sided tape;

[0031] Step 3): After being subjected to pressure at a certain temperature, the conductive particles inside the glue in the second area are broken, and conduction is carried out;

[0032] D: Bond the first layer of glass body and the second layer of glass body by means of a composite adhesive structure.

[0033] (III) Beneficial effects

[0034] Compared with the prior art, the present invention provides a narrow-frame touch screen structure and a manufacturing method, which have the following beneficial effects:

[0035] The narrow-frame touch screen structure and manufacturing method are provided with a spring to enable the pressure plate to squeeze and fix the narrow-frame touch screen structure, and the sliding groove and the sliding block are provided to control the displacement of the auxiliary pressure plate in the left and right directions, so as to facilitate the loosening of the narrow-frame touch screen structure. The edge routing width and distance manufactured by the yellow light process of the first layer of glass body are relatively narrow, the etching ITO glass process of the second layer of glass body is mature, and the composite adhesive structure can be formed by punching two different adhesive composite sets. The above reduces the width and distance of the edge line to meet the requirements of the narrow frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of a narrow-frame touch screen structure and a manufacturing method proposed by the present invention;

[0037] Figure 2 A bottom view of an auxiliary structure of a narrow-frame touch screen structure and a manufacturing method proposed by the present invention;

[0038] Figure 3 A schematic diagram of the first layer of glass of a narrow-frame touch screen structure and a manufacturing method proposed by the present invention;

[0039] Figure 4 A schematic diagram of a second layer of glass of a narrow-frame touch screen structure and a manufacturing method proposed by the present invention;

[0040] Figure 5 A schematic diagram of a composite adhesive structure of a narrow-frame touch screen structure and a manufacturing method proposed by the present invention.

[0041] In the figure: 1. Auxiliary pressure frame; 2. Narrow frame touch screen structure; 21. First layer glass body; 22. Second layer glass body; 23. First layer glass PIN area; 24. First layer glass edge routing one; 25. First layer glass overlap area; 26. First layer glass edge routing two; 27. Second layer glass drive overlap area; 28. Horizontal and vertical overlap sensing area; 29. ​​Second layer glass sensing overlap area; 3. Sliding cavity; 41. Auxiliary pressure plate; 42. Slide groove; 43. Pressure plate; 44. Spring; 51. Transparent double-sided tape in the first area; 52. Double-sided tape in the second area. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] See also Figure 1-5 In this embodiment, a narrow-border touch screen structure includes an auxiliary pressure frame 1 and a narrow-border touch screen structure 2. The auxiliary pressure frame 1 is provided with an auxiliary pressure structure inside, and the narrow-border touch screen structure 2 is provided with a composite adhesive structure.

[0044] Specifically, by providing the auxiliary pressing structure, the narrow-frame touch screen structure 2 can be quickly pressed after pasting, and the adhesive force of the glue is stabilized, so as to achieve the effect of quick pasting and improve work efficiency.

[0045] In this embodiment, the narrow-frame touch screen structure 2 includes a first-layer glass body 21, a first-layer glass PIN area 23 is fixedly connected inside the first-layer glass body 21, a first-layer glass overlap area 25 is fixedly installed inside the first-layer glass body 21, a first-layer glass edge routing line 1 24 is fixedly connected to the outside of the first-layer glass overlap area 25 on the left and right sides, and a first-layer glass edge routing line 2 26 is fixedly connected to the outside of the bottom first-layer glass overlap area 25. The narrow-frame touch screen structure 2 includes a second-layer glass body 22, a second-layer glass driving overlap area 27 is fixedly connected inside the second-layer glass body 22, a horizontal and vertical overlap sensing area 28 is fixedly installed inside the second-layer glass body 22, and a second-layer glass sensing overlap area 29 is fixedly installed outside the second-layer glass body 22.

[0046] Specifically, the edge routing width and distance made by the yellow light process of the first layer of glass body 21 are narrow, and the etching I TO glass process of the second layer of glass body 22 is mature, and the composite adhesive structure can be formed by punching two different adhesive composite sets. The above reduces the width and distance of the edge line to meet the requirements of the narrow frame, thereby completing the preparation purpose of the narrow frame touch screen structure 2.

[0047] In this embodiment, the auxiliary pressure structure includes an auxiliary pressure plate 41 movably installed on the outside of the auxiliary pressure frame 1, a sliding cavity 3 is opened on the front side of the auxiliary pressure frame 1, the inner surface of the sliding cavity 3 is slidably connected to the outer surface of the auxiliary pressure plate 41, so as to facilitate the position adjustment of the auxiliary pressure plate 41, a sliding groove 42 is opened on the back side of the auxiliary pressure plate 41, two pressure plates 43 are movably installed on the back side of the auxiliary pressure plate 41, a sliding block slidably connected to the inner surface of the sliding groove 42 is fixedly installed on the front side of the front pressure plate 43, and a spring 44 is fixedly installed between the opposite sides of the two pressure plates 43.

[0048] The slide groove 42 is placed in a horizontal direction, so as to facilitate the auxiliary pressure plate 41 to move in the left-right direction, thereby freeing up space for the narrow-frame touch screen structure 2 to move.

[0049] There are four sliding cavities 3 arranged in a quadrilateral distribution, and two auxiliary pressure plates 41 are distributed inside the sliding cavity 3 to facilitate fixing and pressing the narrow-frame touch screen structure 2 in all directions.

[0050] Specifically, by providing a spring 44, the pressure plate 43 can squeeze and fix the narrow-frame touch screen structure 2, and by providing a slide groove 42 and a slider, the displacement of the auxiliary pressure plate 41 in the left and right directions can be controlled, so as to facilitate the loosening of the narrow-frame touch screen structure 2.

[0051] In this embodiment, the composite adhesive structure includes a first-region transparent double-sided adhesive tape 51 and a second-region double-sided adhesive tape 52 . The first-region transparent double-sided adhesive tape 51 surrounds the outside of the second-region double-sided adhesive tape 52 .

[0052] Specifically, the transparent double-sided adhesive tape 51 in the first region has an adhesive effect, while the double-sided adhesive tape 52 in the second region has both double-sided adhesive effect and conductive ability. When subjected to pressure at a certain temperature, the conductive particles inside the double-sided adhesive tape 52 in the second region break, thereby achieving the purpose of conductive.

[0053] A method for manufacturing a narrow-frame touch screen structure comprises the following steps:

[0054] A: Circuit production on the first layer of glass body 21:

[0055] Step 1): Select a large piece of reinforced substrate according to the OGS equipment;

[0056] Step 2): Spray the first layer of black ink with a thickness of 4-6um on the first glass body 21 through the Inject command; hollow out the viewing area and functional holes; and the distance between two adjacent small pieces is 0.7mm:

[0057] Step 3): Use magnetron sputtering to coat the large piece that has completed the Inject instruction with a molybdenum-aluminum-molybdenum film;

[0058] Step 4): Use yellow light process to make edge routing and PIN area, edge line width 16um, line spacing 18um; edge line overlap area 0.1*0.2mm;

[0059] Step 5): On the completed circuit, an insulating protective layer OC is made by yellow light process;

[0060] Step 6): Cut the large piece into small pieces, CNC profile, and apply the second layer of ink and other functional inks by silk screen printing;

[0061] Step 7): Surface treatment of the operating surface;

[0062] Step 8): Bind FPC to PIN area;

[0063] B: Circuit production on the second layer of glass body 22:

[0064] Step 1): Select double-sided ITO glass and etch circuits on both sides using silk screen etching paste;

[0065] Step 2): The upper circuit reserves a lap area including the lower circuit, and the upper circuit reserved area is connected to the lower circuit through the mounting hole;

[0066] C: Preparation of composite adhesive:

[0067] Step 1): The area within the visual area extending 0.5-0.8 mm is the first area, i.e. the transparent double-sided tape (51) in the first area;

[0068] Step 2): the other areas outside the first area are the second area, i.e. the second area double-sided tape 52;

[0069] Step 3): After being subjected to pressure at a certain temperature, the conductive particles inside the glue in the second area are broken, and conduction is carried out;

[0070] D: Bond the first layer of glass body 21 and the second layer of glass body 22 by means of a composite adhesive structure.

[0071] The working principle of the above embodiment is:

[0072] (1) The narrow-frame touch screen structure and manufacturing method are as follows: the first layer of glass body 21 is made by the yellow light process, and the edge line width and distance are narrow; the second layer of glass body 22 is made by the mature ITO glass etching process; and the composite adhesive structure can be formed by two different adhesive systems. The above reduces the width and distance of the edge line to achieve the narrow frame requirement.

[0073] (2) The narrow-border touch screen structure and manufacturing method are as follows: the prepared narrow-border touch screen structure 2 is placed on the auxiliary pressure frame 1, and the auxiliary pressure plate 41 is slid in the vertical direction to adjust and fix the position of the narrow-border touch screen structure 2. The pressure plate 43 is pressed and lifted to squeeze the outside of the narrow-border touch screen structure 2, and the horizontal position of the narrow-border touch screen structure 2 is adjusted by controlling the horizontal position of the pressure plate 43 to complete the purpose of squeezing and bonding the narrow-border touch screen structure 2.

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A narrow-frame touch screen structure, comprising an auxiliary pressure frame (1) and a narrow-frame touch screen structure (2), characterized in that: An auxiliary pressure structure is provided inside the auxiliary pressure frame (1), and a composite adhesive structure is provided in the narrow frame touch screen structure (2); The narrow-frame touch screen structure (2) comprises a first-layer glass body (21), a first-layer glass PIN area (23) is fixedly connected inside the first-layer glass body (21), a first-layer glass overlap area (25) is fixedly installed inside the first-layer glass body (21), a first-layer glass edge routing line 1 (24) is fixedly connected outside the first-layer glass overlap area (25) on the left and right sides, and a first-layer glass edge routing line 2 (26) is fixedly connected outside the first-layer glass overlap area (25) at the bottom, and the narrow-frame touch screen structure (2) comprises a second-layer glass body (22), a second-layer glass driving overlap area (27) is fixedly connected inside the second-layer glass body (22), a horizontal and vertical overlap sensing area (28) is fixedly installed inside the second-layer glass body (22), and a second-layer glass sensing overlap area (29) is fixedly installed outside the second-layer glass body (22); The auxiliary pressure structure includes an auxiliary pressure plate (41) movably mounted on the outside of the auxiliary pressure frame (1), the auxiliary pressure plate (41), a slide groove (42) is provided on the back of the auxiliary pressure plate (41), two pressure plates (43) are movably mounted on the back of the auxiliary pressure plate (41), and a spring (44) is fixedly mounted between opposite sides of the two pressure plates (43).

2. The narrow-frame touch screen structure according to claim 1, characterized in that: A sliding cavity (3) is provided on the front side of the auxiliary pressure frame (1), and the inner surface of the sliding cavity (3) is slidably connected to the outer surface of the auxiliary pressure plate (41).

3. The narrow-frame touch screen structure according to claim 1, characterized in that: The composite adhesive structure comprises a first-region transparent double-sided adhesive (51) and a second-region double-sided adhesive (52), wherein the first-region transparent double-sided adhesive (51) surrounds the outside of the second-region double-sided adhesive (52).

4. The narrow-frame touch screen structure according to claim 1, characterized in that: A sliding block is fixedly mounted on the front side of the pressure plate (43) and is slidably connected to the inner surface of the slide groove (42).

5. The narrow-frame touch screen structure according to claim 2, characterized in that: The slide groove (42) is placed in a transverse direction.

6. The narrow-frame touch screen structure according to claim 2, characterized in that: The number of the sliding chambers (3) is four and they are distributed in a quadrilateral shape, and two auxiliary pressure plates (41) are distributed inside the sliding chamber (3).

7. A method for manufacturing a narrow-frame touch screen structure according to claims 1-6, characterized in that: The following steps are involved: A: Circuit production on the first layer of glass body (21): Step 1): Select a large piece of reinforced substrate according to the OGS equipment; Step 2): Spray a first layer of black ink with a thickness of 4-6um on the first glass body (21) through the Inject command; hollow out the viewing area and functional holes; and make the distance between two adjacent small pieces 0.7mm: Step 3): Use magnetron sputtering to coat the large piece that has completed the Inject instruction with a molybdenum-aluminum-molybdenum film; Step 4): Use yellow light process to make edge routing and PIN area, with edge line width of 16um and line spacing of 18um; Edge line overlap area 0.1*0.2mm; Step 5): On the completed circuit, an insulating protective layer OC is made by yellow light process; Step 6): Cut the large piece into small pieces, CNC profile, and apply the second layer of ink and other functional inks by silk screen printing; Step 7): Surface treatment of the operating surface; Step 8): Bind FPC to PIN area; B: Circuit production on the second layer of glass body (22): Step 1): Select double-sided ITO glass and etch circuits on both sides using silk screen etching paste; Step 2): The upper circuit reserves a lap area including the lower circuit, and the upper circuit reserved area is connected to the lower circuit through the mounting hole; C: Preparation of composite adhesive: Step 1): The area within the visual area extending 0.5-0.8 mm is the first area, i.e. the transparent double-sided tape (51) in the first area; Step 2): the other areas outside the first area are the second area, i.e. the second area double-sided tape (52); Step 3): After being subjected to pressure at a certain temperature, the conductive particles inside the glue in the second area are broken, and conduction is carried out; D: Bonding the first layer of glass body (21) and the second layer of glass body (22) together using a composite adhesive structure.

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