Electromagnetic capacitive touch screen

Abstract

The utility model provides an electromagnetic capacitive touch screen, which relates to the technical field of electromagnetic capacitive touch screens and comprises a glass sheet, a capacitive sensing plate, an LCD (liquid crystal display) screen, an electromagnetic film, a protective thin plate, a rebound sheet and a first interface module, and the glass sheet, the capacitive sensing plate, the LCD screen, the electromagnetic film and the protective thin plate are sequentially stacked from top to bottom. One end of the springback piece is fixedly connected with one side of the capacitive sensing plate, the other end of the springback piece winds to the back of the protective thin plate and is fixedly connected with the first interface module, the first interface module is attached to the back of the protective thin plate through the elastic force of the springback piece, and the capacitive sensing plate and the LCD display screen are both electrically connected with the first interface module; according to the electromagnetic capacitive touch screen, the wiring end can be automatically folded and stored, free throwing-out is avoided, meanwhile, unnecessary machining procedures are reduced, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic capacitance touch screens, in particular to an electromagnetic capacitance touch screen. Background Art

[0002] In the field of touch screens, they can be divided into several categories according to different working principles, such as resistive touch screens, capacitive touch screens, electromagnetic touch screens, infrared touch screens, acoustic wave touch screens, etc.

[0003] The most widely used touch screen at present is the capacitive touch screen. Capacitive touch screens distinguish the touch position by sensing the mutual capacitance when a finger touches. Capacitive touch supports multi-touch function, has higher light transmittance, lower overall power consumption, high contact surface hardness, no need to press, and long service life.

[0004] Electromagnetic touch screens currently generally use a back-attached electromagnetic antenna board, which is composed of criss-crossed metal wires. The position information is determined by sensing the induced electromotive force when the electromagnetic pen slides on the screen. The accuracy of electromagnetic touch screens is much greater than that of capacitive touch screens.

[0005] At present, in order to realize the dual touch of hand and pen, capacitive touch and electromagnetic touch are generally used together. Usually, the electromagnetic antenna board is placed on the back side of the display panel, and the capacitive touch module is placed on the upper side of the display panel or embedded in the display panel.

[0006] When such touch screens are shipped, the terminals on one side of the screen often swing out freely. In order to ensure the safe storage of the terminals, workers usually need to use tape to fold them and glue them to the back of the screen. This requires an extra process of gluing the tape, which not only prolongs the company's production hours and reduces production efficiency, but also increases labor costs.

[0007] Therefore, it is necessary to propose an electromagnetic capacitive touch screen to automatically fold and store its terminal to avoid free throwing out, while reducing unnecessary processing steps and improving production efficiency. Utility Model Content

[0008] In order to solve the above problems, the utility model proposes an electromagnetic capacitive touch screen to automatically fold and store its wiring terminals to prevent them from being thrown out freely, while reducing unnecessary processing steps and improving production efficiency.

[0009] The utility model is realized by the following technical solutions:

[0010] The utility model proposes an electromagnetic capacitive touch screen, comprising a glass sheet, a capacitive sensing plate, an LCD display, an electromagnetic film, a protective thin plate, a springback sheet, and a first interface module. The glass sheet, the capacitive sensing plate, the LCD display, the electromagnetic film, and the protective thin plate are stacked in sequence from top to bottom, one end of the springback sheet is fixedly connected to one side of the capacitive sensing plate, the other end of the springback sheet meanders to the back of the protective thin plate and is fixedly connected to the first interface module, the first interface module is attached to the back of the protective thin plate by the elastic force of the springback sheet, and the capacitive sensing plate and the LCD display are both electrically connected to the first interface module.

[0011] Furthermore, the cross section of the resilient sheet is a J-shaped structure.

[0012] Furthermore, the rebound plate includes a strip connecting plate, a rebound area, and a supporting plate. One side of the strip connecting plate is fixedly connected to one side of the capacitive sensing plate, the other side of the strip connecting plate is fixedly connected to one side of the rebound area, the other side of the rebound area is fixedly connected to one side of the supporting plate, the first interface module is fixedly connected to the supporting plate, and the supporting plate relies on the elastic force of the rebound area to fit on the back of the protective thin plate.

[0013] Furthermore, the first interface module is embedded in the carrier board.

[0014] Furthermore, the cross section of the rebound area is C-shaped.

[0015] Furthermore, the length of the strip connecting plate is equal to the length of the rebound area.

[0016] Furthermore, the length of the bearing plate is half of the length of the rebound area.

[0017] Furthermore, the carrier plate is provided with a first avoidance groove, the first interface module is provided with a plug interface, and the plug interface is accommodated in the first avoidance groove.

[0018] Furthermore, two clamping strips are provided on the back of the protective thin plate, the supporting plate is located between the two clamping strips, and two sides of the supporting plate are respectively clamped and connected with the two clamping strips.

[0019] Furthermore, a second interface module is provided on the back side of the electromagnetic film, the second interface module is electrically connected to the electromagnetic film, a second avoidance groove is provided on the protective sheet, and the second interface module is accommodated in the second avoidance groove.

[0020] Beneficial effects of the utility model:

[0021] The utility model adopts a glass sheet, a capacitive sensing plate, an LCD display screen, an electromagnetic film, and a protective thin plate to be stacked in sequence from top to bottom to form an electromagnetic capacitive touch screen, and then a first interface module is fixed by a spring-back sheet. The first interface module is attached to the back of the protective thin plate by the elastic force of the spring-back sheet, so that the first interface module is automatically folded and stored, and workers do not need to use tape to bond it, which is quick and convenient. In summary, the electromagnetic capacitive touch screen can automatically fold and store its wiring terminals to avoid free throwing out, while reducing unnecessary processing procedures and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front side of the electromagnetic capacitive touch screen of the utility model with the rebound sheet straightened;

[0023] Figure 2 It is a side schematic diagram of the electromagnetic capacitive touch screen of the utility model;

[0024] Figure 3 It is a schematic diagram of the back side of the electromagnetic capacitive touch screen of the present utility model.

[0025] The reference numerals are as follows:

[0026] Glass sheet 1;

[0027] Capacitive sensing board 2;

[0028] LCD display 3;

[0029] Electromagnetic membrane 4, second interface module 41;

[0030] Protective sheet 5, clamping strip 51, second avoidance groove 52;

[0031] Resilient sheet 6, strip connecting plate 61, rebound area 62, bearing plate 63, first avoidance groove 631;

[0032] The first interface module 7 includes an insertion interface 71 . DETAILED DESCRIPTION

[0033] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0034] Please refer to Figure 1-Figure 3The utility model proposes an electromagnetic capacitive touch screen, comprising a glass sheet 1, a capacitive sensing plate 2, an LCD display screen 3, an electromagnetic film 4, a protective thin plate 5, a springback sheet 6, and a first interface module 7. The glass sheet 1, the capacitive sensing plate 2, the LCD display screen 3, the electromagnetic film 4, and the protective thin plate 5 are stacked in sequence from top to bottom, one end of the springback sheet 6 is fixedly connected to one side of the capacitive sensing plate 2, the other end of the springback sheet 6 meanders to the back of the protective thin plate 5 and is fixedly connected to the first interface module 7, the first interface module 7 is attached to the back of the protective thin plate 5 by the elastic force of the springback sheet 6, the capacitive sensing plate 2 and the LCD display screen 3 are electrically connected to the first interface module 7, and the first interface module 7 is made of a flexible circuit board.

[0035] In this embodiment, during production and assembly, the glass sheet 1, the capacitive sensing plate 2, the LCD display screen 3, the electromagnetic film 4, and the protective sheet 5 are stacked in order from top to bottom to form an electromagnetic capacitive touch screen. Since the area of ​​the glass sheet 1 is the largest, it has a shielding effect on the capacitive sensing plate 2, the LCD display screen 3, the electromagnetic film 4, and the protective sheet 5 at the rear, so the rebound sheet 6 is fixed on one side of the capacitive sensing plate 2 as the best position, and then the first interface module 7 is fixed by the rebound sheet 6. The first interface module 7 is attached to the back of the protective sheet 5 by the elastic force of the rebound sheet 6, so that the first interface module 7 is automatically folded and stored, and will not be automatically thrown out for no reason, and workers do not need to use tape for bonding, which is quick and convenient when shipping;

[0036] In summary, the electromagnetic capacitive touch screen can automatically fold and store its wiring terminals to prevent them from being thrown out freely, while reducing unnecessary processing steps and improving production efficiency.

[0037] In this embodiment, the cross section of the resilient sheet 6 is J-shaped, that is, the longer end is located in the back area of ​​the protective sheet 5, so that the first interface module 7 is fitted more inward and the fitting contact area is larger.

[0038] In this embodiment, the resilient sheet 6 includes a strip connecting plate 61, a resilient region 62, and a bearing plate 63. One side of the strip connecting plate 61 is fixedly connected to one side of the capacitive sensing plate 2, the other side of the strip connecting plate 61 is fixedly connected to one side of the resilient region 62, the other side of the resilient region 62 is fixedly connected to one side of the bearing plate 63, the first interface module 7 is fixedly connected to the bearing plate 63, and the bearing plate 63 is attached to the back of the protective sheet 5 by the elastic force of the resilient region 62; when the resilient sheet 6 is fixedly connected to one side of the capacitive sensing plate 2, When fixing, first use an external tool to clamp and straighten the rebound area 62 so that the strip connecting plate 61, the rebound area 62, and the supporting plate 63 are in the same plane, and then directly fix the strip connecting plate 61 on one side of the capacitive sensing plate 2, and then install the first interface module 7 on the supporting plate 63. After the first interface module 7 is installed, remove the external tool, and the rebound area 62 rebounds and resets, finally making the supporting plate 63 fit against the back of the protective thin plate 5, so that the first interface module 7 will also fit against the back of the protective thin plate 5.

[0039] In this embodiment, the first interface module 7 is embedded in the carrier board 63. The embedding method can protect the first interface module 7 and make the whole body thinner.

[0040] In the present embodiment, the cross section of the rebound region 62 is C-shaped, and the C-shape is the shape of the rebound region 62 when it rebounds naturally.

[0041] In this embodiment, the length of the strip connecting plate 61 is equal to the length of the rebound area 62 . The equal lengths are for the purpose of ensuring sufficient rebound force.

[0042] In this embodiment, the length of the support plate 63 is half of the length of the rebound area 62 , so as to reduce the weight of the support plate 63 and the lamination area.

[0043] In this embodiment, a first avoidance groove 631 is provided on the carrier plate 63, and the first interface module 7 is provided with a plug interface 71, which is accommodated in the first avoidance groove 631. The first avoidance groove 631 is used to provide a storage space for the plug interface 71 so that the plug interface 71 can be fixed appropriately.

[0044] In this embodiment, two clip strips 51 are provided on the back of the protective thin plate 5, and the supporting plate 63 is located between the two clip strips 51. The two sides of the supporting plate 63 are respectively connected with the two clip strips 51 to form a clip connection. In order to increase the fixing strength of the supporting plate 63 and prevent it from being bent easily when subjected to external force, two additional clip strips 51 are provided to improve the fixing force and parallelism of the supporting plate 63.

[0045] In this embodiment, a second interface module 41 is provided on the back side of the electromagnetic film 4, and the second interface module 41 is electrically connected to the electromagnetic film 4. A second avoidance groove 52 is provided on the protective thin plate 5, and the second interface module 41 is accommodated in the second avoidance groove 52. The second avoidance groove 52 is used to provide a placement space for the second interface module 41. The second interface module 41 is made of a flexible circuit board. When electrically connected to an external circuit board, the electromagnetic film 4 can be connected to the external circuit board through the second interface module 41, and the capacitive sensing plate 2 and the LCD display screen 3 can be connected to the external circuit board through the first interface module 7.

[0046] Of course, the present utility model may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present utility model.

Claims

1. An electromagnetic capacitive touch screen, characterized in that: It includes a glass sheet, a capacitor sensing plate, an LCD display, an electromagnetic film, a protective sheet, a spring-back sheet, and a first interface module. The glass sheet, the capacitor sensing plate, the LCD display, the electromagnetic film, and the protective sheet are stacked in order from top to bottom. One end of the spring-back sheet is fixedly connected to one side of the capacitor sensing plate, and the other end of the spring-back sheet meanders to the back of the protective sheet and is fixedly connected to the first interface module. The first interface module relies on the elastic force of the spring-back sheet to fit on the back of the protective sheet, and the capacitor sensing plate and the LCD display are electrically connected to the first interface module.

2. The electromagnetic capacitive touch screen according to claim 1, characterized in that: The cross section of the resilient sheet is in a J-shaped structure.

3. The electromagnetic capacitive touch screen according to claim 1, characterized in that: The rebound sheet includes a strip connecting plate, a rebound area, and a supporting plate. One side of the strip connecting plate is fixedly connected to one side of the capacitive sensing plate, the other side of the strip connecting plate is fixedly connected to one side of the rebound area, the other side of the rebound area is fixedly connected to one side of the supporting plate, the first interface module is fixedly connected to the supporting plate, and the supporting plate is attached to the back of the protective thin plate by the elastic force of the rebound area.

4. The electromagnetic capacitive touch screen according to claim 3, characterized in that: The first interface module is embedded in the carrying board.

5. The electromagnetic capacitive touch screen according to claim 3, characterized in that: The cross section of the rebound area is C-shaped.

6. The electromagnetic capacitive touch screen according to claim 3, characterized in that: The length of the strip connecting plate is equal to the length of the rebound area.

7. The electromagnetic capacitive touch screen according to claim 3, characterized in that: The length of the bearing plate is half the length of the springback area.

8. The electromagnetic capacitive touch screen according to claim 3, characterized in that: The carrying plate is provided with a first avoidance groove, the first interface module is provided with a plug interface, and the plug interface is received in the first avoidance groove.

9. The electromagnetic capacitive touch screen according to claim 3, characterized in that: The back of the protective sheet is provided with two clamping strips, the carrying plate is located between the two clamping strips, and the two sides of the carrying plate are respectively clamped and connected with the two clamping strips.

10. The electromagnetic capacitive touch screen according to claim 1, characterized in that: A second interface module is provided on the back side of the electromagnetic film, the second interface module is electrically connected to the electromagnetic film, a second avoidance groove is provided on the protective sheet, and the second interface module is accommodated in the second avoidance groove.

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