Integrated touch module structure and auxiliary alignment device

Abstract

The utility model relates to the technical field of touch modules, in particular to an integrated touch module structure and an auxiliary alignment device. The alignment deviation of the FPC can be effectively reduced, the alignment precision of the FPC after being bent to the back surface of the backlight rear iron frame is improved, and the shipment quality of the touch module is improved; the backlight module comprises a backlight assembly; the backlight assembly comprises a glass cover plate and a backlight rear iron frame integrally connected with the glass cover plate. An FPC soft board; the FPC soft board is integrally connected with the bottom of the backlight assembly; each of the two alignment indentations comprises two mark lines which are parallel to each other; the two alignment indentations are symmetrically arranged at the bottom of the back face of the backlight assembly. Performing alignment identification; the alignment mark is perpendicular to a center connecting line of the two alignment indentations, and the alignment mark is matched with the FPC soft board in appearance; the alignment mark is a black ink layer; the thickness of the black ink layer is 5-15 microns; the alignment mark is a laser etching layer.

Description

Technical Field

[0001] The utility model relates to the technical field of touch modules, in particular to an integrated touch module structure and an auxiliary alignment device. Background Art

[0002] The touch module includes: cover glass, which has two functions: one is to protect the CTP module, and the other is to form a capacitor between the finger and the sensor; the sensor layer, which has two functions: one is to receive the pulse signal of the control IC, and the other is to form a capacitor; the FPC soft board serves as the connecting line between the sensor layer and the main board.

[0003] For example, a Chinese utility model patent discloses a touch module and electronic device (publication (announcement) number CN219105469U), the touch module includes a touch sensor, an FPC soft board, and a main board, the touch sensor is electrically connected to the main board through the FPC soft board, a first connection area is provided on the touch sensor, a number of first connection PINs are provided in the first connection area, a second connection area is provided at one end of the FPC soft board, a number of second connection PINs are provided in the second connection area, a number of first connection PINs correspond to a number of second connection PINs and are electrically connected, the width of the first connection PIN is different from the width of the second connection PIN, and the ratio of the width of the first connection PIN to the width of the second connection PIN is greater than 1 / 3 and less than 3, and the other end of the FPC soft board is electrically connected to the main board. This application effectively reduces the alignment offset when the touch sensor is connected to the FPC soft board by setting the width of the connection PIN to be different, thereby improving the yield of the product.

[0004] However, when the inventors implemented this device, they found the following defects: the FPC board of the touch module needs to be bent to the back of the backlight assembly and fixed, and usually two indentation lines are etched on the back of the backlight assembly. Figure 1 If the heights of the left and right sides of the FPC board are inconsistent during bending and alignment, and the shape of the FPC board is within the two indentation lines, the position of the connector at the interface end of the FPC board will deviate from the standard range (such as Figure 2 As shown in the figure), after this product is shipped to the customer for assembly, the position of the connector on the FPC soft board cannot overlap with the connector position on the client's mainboard, and they cannot be snapped together for use, which will cause product rework and increase processing costs, and also have a negative impact on the company's brand. Utility Model Content

[0005] Based on this, it is necessary to provide an integrated touch module structure and auxiliary alignment device to address the above technical problems, effectively reduce the FPC soft board alignment offset, improve the alignment accuracy of the FPC soft board after it is bent to the back of the iron frame behind the backlight, and improve the delivery quality of the touch module.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An integrated touch module structure is used for aligning an FPC soft board on a touch module after bending.

[0008] The integrated touch module structure specifically includes:

[0009] Backlight assembly; the backlight assembly includes a glass cover plate and a backlight rear iron frame integrally connected to the glass cover plate;

[0010] FPC soft board; the FPC soft board is integrally connected to the bottom of the backlight assembly;

[0011] Two alignment indentations, each of the two alignment indentations comprises two parallel traces; the two alignment indentations are symmetrically arranged at the bottom of the back side of the backlight assembly;

[0012] Alignment mark; the alignment mark is arranged perpendicularly to the center line connecting the two alignment indentations, and the alignment mark matches the shape of the FPC soft board.

[0013] As the integrated touch module structure provided by the utility model, the alignment mark is a black ink layer.

[0014] As the integrated touch module structure provided by the utility model, the thickness of the black ink layer is 5-15 μm.

[0015] As the integrated touch module structure provided by the utility model, the alignment mark is a laser engraving layer; further, the laser engraving layer can be laser engraved on the front side or laser engraved into other patterns such as a grid.

[0016] As the integrated touch module structure provided by the utility model, the depth of the laser engraving layer is 1-5 μm.

[0017] As the integrated touch module structure provided by the utility model, the alignment mark is a liquid etching layer; further, the depth of the liquid etching layer is 1-5 μm; the backlight assembly alignment mark is etched into a frosted shape or other textures by etching liquid.

[0018] An auxiliary alignment device includes the integrated touch module structure as described above, and also includes an installation box, wherein a first placement mold groove that matches the backlight assembly is installed on the top of the installation box, a flip mold is hingedly installed at one end of the first placement mold groove, and a second placement mold groove that matches the FPC soft board is provided on the flip mold, and two infrared sensors symmetrically arranged on both sides of the second placement mold groove are installed on the flip mold; further, the width between the two infrared sensors is equidistant from the width of the alignment mark.

[0019] As the auxiliary positioning device provided by the utility model, a pneumatic suction cup is provided in the first placement mold groove; further, the pneumatic suction cup is connected to an external negative pressure source.

[0020] As the auxiliary aligner provided by the utility model, the installation box includes a box body and a top cover hingedly installed on the box body, and the first placement mold groove is fixedly installed on the top cover.

[0021] As the auxiliary positioning device provided by the utility model, a material unloading push plate is installed in the first placement mold groove so as to slide up and down, and a driver is installed in the box body to provide power for the material unloading push plate to slide up and down; further, the driver can adopt an electric cylinder, a pneumatic cylinder or other equivalent drivers with a lifting drive effect.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The integrated touch module structure and auxiliary alignment device provided by the utility model can make the FPC soft board attached to the backlight component by folding the FPC soft board. If the FPC soft board completely covers the alignment mark, it means that the FPC soft board is accurately folded and aligned; if part of the alignment mark is exposed, it means that there is an error in the flipping alignment of the FPC soft board, and it needs to be re-folded and positioned, which effectively reduces the alignment deviation of the FPC soft board, improves the alignment accuracy of the FPC soft board after it is bent to the back of the iron frame behind the backlight, and improves the delivery quality of the touch module;

[0024] The backlight assembly is placed in the first placement mold groove. In the initial state, the flip mold is in a horizontal placement state, and the FPC soft board is placed in the second placement mold groove. The flip mold is rotated to attach the FPC soft board to the backlight assembly. Infrared light is emitted by the infrared sensor. After the infrared light is emitted, it is irradiated near the edge of the FPC soft board. If the FPC soft board is accurately bent, the FPC soft board completely covers the alignment mark. At this time, the reflected light receiving rate of the infrared light is normal and the product is qualified. If the FPC soft board is deflected after bending, the infrared light is irradiated at the alignment mark. At this time, the reflected light receiving rate of the infrared light changes, and the infrared sensor transmits the signal to the external processor and issues a warning. The operator can find it in time and re-operate. The auxiliary aligner replaces manual bending and alignment of the FPC soft board, which improves the convenience of operation and effectively improves the bending alignment accuracy of the FPC soft board. The infrared sensor cooperates with the alignment mark to verify the alignment accuracy of the FPC soft board, further ensuring the bending alignment accuracy of the FPC soft board. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the precise alignment of the touch module structure in the prior art;

[0027] Figure 2 A schematic diagram of the offset alignment of the touch module structure in the prior art;

[0028] Figure 3 This is a schematic diagram of the touch module structure provided by the utility model;

[0029] Figure 4 A schematic diagram of a screen in the offset alignment state of the touch module structure provided by the utility model;

[0030] Figure 5 This is a three-dimensional structural schematic diagram of a state in which a touch module is placed in the auxiliary alignment device provided by the utility model;

[0031] Figure 6 A schematic diagram of the top plan structure of the auxiliary alignment device provided by the utility model;

[0032] Figure 7 for Figure 6 Schematic diagram of the cross-section structure at AA in the middle;

[0033] Figure 8 It is a three-dimensional structural schematic diagram of the auxiliary alignment device provided by the utility model when there is no touch module structure.

[0034] The markings in the figure are as follows: 1. Backlight assembly; 2. FPC soft board; 3. Alignment indentation; 4. Alignment mark; 5. First placement mold groove; 6. Flip mold; 7. Second placement mold groove; 8. Infrared sensor; 9. Pneumatic suction cup; 10. Box body; 11. Top cover; 12. Unloading push plate; 13. Driver. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0036] As described in the background technology, a touch module and an electronic device; the FPC soft board of the touch module needs to be bent to the back of the backlight component and fixed, and usually two indentation lines are etched on the back of the backlight component. After the FPC soft board is bent, refer to this alignment (such as Figure 1 If the heights of the left and right sides of the FPC board are inconsistent during bending and alignment, and the shape of the FPC board is within the two indentation lines, the position of the connector at the interface end of the FPC board will deviate from the standard range (such as Figure 2 As shown in the figure), after this product is shipped to the customer for assembly, the position of the connector on the FPC soft board cannot overlap with the connector position on the client's mainboard, and they cannot be snapped together for use, which will cause product rework and increase processing costs, and also have a negative impact on the company's brand.

[0037] In order to solve this technical problem, the utility model provides an integrated touch module structure and an auxiliary aligner, which are applied to align the FPC soft board on the touch module after bending.

[0038] Specifically, please refer to Figure 1-8 The integrated touch module structure specifically includes: a backlight assembly 1; the backlight assembly 1 includes a glass cover plate and a backlight rear iron frame integrally connected to the glass cover plate; an FPC soft board 2; the FPC soft board 2 is integrally connected to the bottom of the backlight assembly 1; two alignment indentations 3, each of the two alignment indentations 3 includes two mutually parallel traces; the two alignment indentations 3 are symmetrically arranged at the bottom of the back of the backlight assembly 1; an alignment mark 4; the alignment mark 4 is arranged perpendicular to the center line connecting the two alignment indentations 3, and the alignment mark 4 matches the appearance of the FPC soft board 2.

[0039] The integrated touch module structure provided by the utility model can attach the FPC soft board 2 to the backlight component 1 by folding the FPC soft board 2. If the FPC soft board 2 completely covers the alignment mark 4, it means that the folding and alignment of the FPC soft board 2 is accurate; if part of the alignment mark 4 is exposed, it means that there is an error in the flipping and alignment of the FPC soft board 2, and it needs to be folded and re-positioned, which effectively reduces the alignment deviation of the FPC soft board 2, improves the alignment accuracy of the FPC soft board 2 after it is bent to the back of the iron frame behind the backlight, and improves the delivery quality of the touch module.

[0040] An auxiliary alignment device includes the above integrated touch module structure and also includes an installation box, a first placement mold groove 5 matched with the backlight assembly 1 is installed on the top of the installation box, a flip mold 6 is hingedly installed at one end of the first placement mold groove 5, a second placement mold groove 7 matched with the FPC soft board 2 is provided on the flip mold 6, and two infrared sensors 8 symmetrically arranged on both sides of the second placement mold groove 7 are installed on the flip mold 6; further, the width between the two infrared sensors 8 is equidistant from the width of the alignment mark 4.

[0041] The auxiliary alignment device provided by the utility model places the backlight component 1 into the first placement mold groove 5. In the initial state, the flip mold 6 is in a horizontal placement state, the FPC soft board 2 is placed in the second placement mold groove 7, and the flip mold 6 is rotated to make the FPC soft board 2 attached to the backlight component 1. The infrared sensor 8 emits infrared light. After the infrared light is emitted, it irradiates the edge of the FPC soft board 2. If the FPC soft board 2 is accurately bent, the FPC soft board 2 completely covers the alignment mark 4. At this time, the reflected light reception rate of the infrared light is normal, and the product is qualified. If the FPC After the flexible board 2 is bent, it deflects, and the infrared light is irradiated on the alignment mark 4. At this time, the reflected light reception rate of the infrared light changes, and the infrared sensor 8 transmits the signal to the external processor and issues a warning. The operator can find it in time and re-operate. The auxiliary aligner is used instead of manual bending and alignment of the FPC flexible board 2, which improves the convenience of operation and effectively improves the bending alignment accuracy of the FPC flexible board 2. The infrared sensor 8 cooperates with the alignment mark 4 to verify the alignment accuracy of the FPC flexible board 2, further ensuring the bending alignment accuracy of the FPC flexible board 2.

[0042] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0043] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] Example 1

[0046] Please refer to Figure 1-4 , an integrated touch module structure, a backlight component 1; the backlight component 1 includes a glass cover plate and a backlight rear iron frame integrally connected to the glass cover plate; an FPC soft board 2; the FPC soft board 2 is integrally connected to the bottom of the backlight component 1; two alignment indentations 3, each of the two alignment indentations 3 includes two mutually parallel traces; the two alignment indentations 3 are symmetrically arranged at the bottom of the back of the backlight component 1; an alignment mark 4; the alignment mark 4 is arranged perpendicular to the center line connecting the two alignment indentations 3, and the alignment mark 4 matches the appearance of the FPC soft board 2; the alignment mark 4 is a black ink layer; the thickness of the black ink layer is 5-15μm.

[0047] The integrated touch module structure provided in this embodiment has a black ink layer with eye-catching color, which can produce a large color difference with the FPC soft board 2 and the backlight assembly 1. Once the FPC soft board 2 is not accurately aligned, the operator can observe the black ink layer in time and deal with it.

[0048] Example 2

[0049] The integrated touch module structure provided in Example 1 is further optimized. Specifically, Figure 1-4 As shown, the alignment mark 4 is a laser engraving layer; further, the laser engraving layer can be laser engraved on the front or laser engraved into other patterns such as a grid; the depth of the laser engraving layer is 1-5 μm.

[0050] The integrated touch module structure provided in the present embodiment will produce a certain thickness stack when printing black ink. If it is not allowed to increase the thickness, laser engraving can be performed on the backlight assembly 1. The corresponding area is laser engraved on the front or laser engraved into a grid. The depth of the laser engraved area is 1~5um, which forms a sharp contrast with the non-laser engraved area on the backlight assembly 1, or only the edge of the shape is laser engraved. Other methods such as liquid etching can also be used so that the operator can refer to the degree of installation deviation of the FPC soft board 2.

[0051] Specifically, the alignment mark 4 is a liquid etching layer; further, the depth of the liquid etching layer is 1-5 μm; the alignment mark 4 of the backlight assembly 1 is etched into a frosted shape or other textures by the etching liquid.

[0052] Example 3

[0053] An auxiliary alignment device includes the above integrated touch module structure, and also includes an installation box, a first placement mold groove 5 matched with the backlight assembly 1 is installed on the top of the installation box, a flip mold 6 is hingedly installed at one end of the first placement mold groove 5, a second placement mold groove 7 matched with the FPC soft board 2 is provided on the flip mold 6, and two infrared sensors 8 symmetrically arranged on both sides of the second placement mold groove 7 are installed on the flip mold 6; further, the width between the two infrared sensors 8 is equidistant from the width of the alignment mark 4; a pneumatic suction cup 9 is provided in the first placement mold groove 5; further, the pneumatic suction cup 9 is connected to an external negative pressure source.

[0054] The auxiliary alignment device provided in this embodiment can firmly adsorb the backlight component 1 and the like into the first placement mold groove 5 through the pneumatic suction cup 9, thereby preventing the backlight component 1 from being offset when the FPC soft board 2 is bent, and further improving the bending alignment accuracy of the FPC soft board 2.

[0055] Specifically, the installation box includes a box body 10 and a top cover 11 hingedly installed on the box body 10, and the first placement mold groove 5 is fixedly installed on the top cover 11; when the FPC soft board 2 is aligned, the pneumatic suction cup 9 is separated from the adsorption of the backlight component 1, and the top cover 11 is flipped so that the top of the top cover 11 faces downward, so that the backlight component 1 in the first placement mold groove 5 is automatically unloaded under the action of gravity, thereby improving the convenience of unloading.

[0056] Specifically, a material unloading push plate 12 is installed in the first placement mold groove 5 so as to slide up and down, and a driver 13 is installed in the box body 10 to provide power for the material unloading push plate 12 to slide up and down; further, the driver 13 can adopt an electric cylinder, a pneumatic cylinder or other equivalent drivers with a lifting and lowering driving effect; the driver 13 can also be started to drive the material unloading push plate 12 to move upward, and the material unloading push plate 12 lifts the backlight component 1 in the first placement mold groove 5, so as to unload the backlight component 1.

[0057] The use process of the integrated touch module structure and the auxiliary alignment device provided by the utility model is as follows: during manual operation, the FPC soft board 2 is folded to make the FPC soft board 2 attached to the backlight component 1. If the FPC soft board 2 completely covers the alignment mark 4, it means that the FPC soft board 2 is accurately folded and aligned; if part of the alignment mark 4 is exposed, it means that there is an error in the flipping and alignment of the FPC soft board 2, and it needs to be folded and positioned again;

[0058] When the FPC soft board 2 is bent and aligned by the auxiliary alignment device, the backlight component 1 is placed in the first placement mold groove 5. In the initial state, the flip mold 6 is in a horizontal placement state, the FPC soft board 2 is placed in the second placement mold groove 7, and the flip mold 6 is rotated to attach the FPC soft board 2 to the backlight component 1. Infrared light is emitted by the infrared sensor 8. After the infrared light is emitted, it is irradiated near the edge of the FPC soft board 2. If the FPC soft board 2 is accurately bent, the FPC soft board 2 completely covers the alignment mark 4. At this time, the reflected light receiving rate of the infrared light is normal and the product is qualified. If the FPC soft board 2 is deflected after bending, the infrared light is irradiated at the alignment mark 4. At this time, the reflected light receiving rate of the infrared light changes, and the infrared sensor 8 transmits the signal to the external processor and issues a warning. The operator can discover it in time and re-operate until it is accurately aligned.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. An integrated touch module structure, characterized in that: It includes: A backlight assembly (1); the backlight assembly (1) comprises a glass cover plate and a backlight rear iron frame integrally connected to the glass cover plate; An FPC soft board (2); the FPC soft board (2) is integrally connected to the bottom of the backlight assembly (1); Two alignment indentations (3), each of the two alignment indentations (3) comprising two mutually parallel traces; the two alignment indentations (3) are symmetrically arranged at the bottom of the back side of the backlight assembly (1); An alignment mark (4); the alignment mark (4) is arranged perpendicular to the center line connecting the two alignment indentations (3); the alignment mark (4) matches the outer shape of the FPC soft board (2).

2. The integrated touch module structure according to claim 1, characterized in that: The alignment mark (4) is a black ink layer.

3. The integrated touch module structure according to claim 2, characterized in that: The thickness of the black ink layer is 5-15 μm.

4. The integrated touch module structure according to claim 1, characterized in that: The alignment mark (4) is a laser engraving layer.

5. The integrated touch module structure according to claim 4, characterized in that: The depth of the laser engraving layer is 1-5 μm.

6. The integrated touch module structure according to claim 1, characterized in that: The alignment mark (4) is a liquid etching layer.

7. An auxiliary alignment device, used for auxiliary alignment of the integrated touch module structure according to claim 1, characterized in that: The invention comprises the integrated touch module structure as described above, and also comprises an installation box, wherein a first placement mold groove (5) matching with a backlight assembly (1) is installed on the top of the installation box, a flip mold (6) is hingedly installed at one end of the first placement mold groove (5), a second placement mold groove (7) matching with an FPC soft board (2) is provided on the flip mold (6), and two infrared sensors (8) symmetrically arranged on both sides of the second placement mold groove (7) are installed on the flip mold (6).

8. The auxiliary alignment device according to claim 7, characterized in that: A pneumatic suction cup (9) is provided in the first placement mold cavity (5).

9. The auxiliary alignment device according to claim 7, characterized in that: The installation box comprises a box body (10) and a top cover (11) hingedly mounted on the box body (10), and the first placement mold groove (5) is fixedly mounted on the top cover (11).

10. The auxiliary alignment device according to claim 9, characterized in that: A material unloading push plate (12) is installed in the first placement mold groove (5) so as to slide up and down, and a driver (13) is installed in the box body (10) to provide power for the material unloading push plate (12) to slide up and down.

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