Touch screen structure integrated with light sensation

Abstract

The utility model discloses a touch screen structure integrated with light sensation, which comprises a cover plate, a main FPC (Flexible Printed Circuit), a touch film sensor, a light sensation FPC and a PI (Polyimide) reinforcing plate, and the light sensation FPC comprises an FPC and a light sensation element; the light sensing element comprises an element protection film and a light sensing IC. The PI reinforcing plate is installed on the top of one side of the cover plate, the FPC is installed on the PI reinforcing plate, and the light-sensitive IC is arranged on the FPC. According to the touch screen and the light-sensitive element, the touch screen and the light-sensitive element do not need to be assembled separately and are made into a whole, the structure can be more concise, smaller space is occupied, the whole machine structure design is more flexible, specifically, the light-sensitive IC is soldered on the FPC independently, and the cost is reduced. The FPC is provided with a hole position of the light sensation IC, and a light sensation receiving surface of the light sensation IC is exposed, so that in the whole display module, external light rays can penetrate through the black semi-through hole of the touch screen cover plate to irradiate the light sensation IC surface, the backlight brightness is adjusted through the intensity of the external light rays, and finally the effect of adjusting the screen brightness is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of touch screens, in particular to a touch screen structure with integrated light sensing. Background Art

[0002] Touch screen technology is the most acceptable computer input method for ordinary people after keyboard, mouse, handwriting tablet and voice input. With this technology, users can operate the host by simply touching the icons or text on the computer screen with their fingers, making human-computer interaction more straightforward. This technology greatly facilitates users and is an attractive new multimedia interactive device. When some touch screens are in use, they usually have the function of sensing external optics to adjust the screen brightness, making it easier for users to watch in different environments.

[0003] In the prior art, the touch screen and the light sensing element are usually assembled separately. This method has the problem of being not simple and flexible in design and installation. At the same time, separate assembly means that more structures are required to cooperate with them, which takes up more space, thus affecting the simplicity of the entire product. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a touch screen structure with integrated photosensitivity, comprising a cover plate, a main FPC, a touch film sensor, a photosensitivity FPC and a PI reinforcement plate, wherein the photosensitivity FPC comprises an FPC and a photosensitivity element; the photosensitivity element comprises an element protection film and a photosensitivity IC; the PI reinforcement plate is mounted on the top of one side of the cover plate, the FPC is mounted on the PI reinforcement plate, the photosensitivity IC is arranged on the FPC, and holes are provided on the FPC and the PI reinforcement plate for exposing the photosensitivity receiving surface of the photosensitivity IC.

[0006] As a further solution of the utility model: the left and right ends of the FPC are provided with binding positions, the binding positions on the left and right ends of the FPC are bound to the touch film sensor to fix it, and the touch film sensor is designed with metal wiring, and the light sensing circuit of the FPC is connected to the main FPC through the metal wiring on the touch film sensor.

[0007] As a further solution of the utility model: the touch film sensor is arranged on the cover plate, and the touch film sensor bound with the FPC is bonded to the cover plate by optical adhesive OCA.

[0008] As a further solution of the utility model: the main FPC is installed at the bottom of the cover plate, and a protective glue is provided at the connection between the main FPC and the cover plate.

[0009] As a further solution of the utility model: protective glue 2 is also provided on the left and right sides of the PI reinforcing plate, and the circuits at the left and right ends of the FPC are both cured and positioned by the protective glue 2.

[0010] As a further solution of the utility model: the photosensitive IC is provided with four pins, namely, an SDA pin, an IOVDD pin, a GND pin and an SCL pin, and the photosensitive IC is welded on the FPC through the four pins.

[0011] As a further solution of the utility model: the four pins on the light sensing IC are respectively located at the four corners of the light sensing IC and are symmetrically distributed in pairs.

[0012] As a further solution of the utility model: the component protection film is arranged on the outer side of the photosensitive FPC.

[0013] As a further solution of the utility model: a black semi-transparent hole is opened on the front side of the cover plate at a position corresponding to the light-sensing IC.

[0014] As a further solution of the utility model: a double-sided adhesive tape is arranged at the bottom of the back side of the main FPC.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] The present application discloses a touch screen structure scheme with integrated light sensing, which eliminates the need for separate assembly of the touch screen and the light sensing element, but rather integrates them into one, making the structure simpler, occupying less space, and making the overall structural design more flexible. Specifically, the light sensing IC is separately welded on the FPC, and a hole for the light sensing IC is opened on the FPC to expose the light-receiving surface of the light sensing IC. Then, the two ends of the FPC are bound to the touch film sensor to fix it, and then the light sensing circuit is connected to the main FPC through the metal wiring on the touch film sensor. Finally, the touch film sensor is attached to the cover plate through the optical adhesive OCA. Therefore, in the entire display module, external light can pass through the black semi-transparent hole of the touch screen cover plate to irradiate the light sensing IC surface, and the backlight brightness is adjusted by the strength of the external light, thereby ultimately achieving the effect of adjusting the screen brightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a rear view structural schematic diagram of the touch screen structure with integrated light sensing of the utility model;

[0018] Figure 2 The utility model is a touch screen structure with integrated light sensing. Figure 1 A schematic diagram of the enlarged structure at point A;

[0019] Figure 3 It is a side view structural schematic diagram of the touch screen structure with integrated light sensing of the utility model;

[0020] Figure 4 The utility model is a touch screen structure with integrated light sensing. Figure 3 A schematic diagram of the enlarged structure at B;

[0021] Figure 5 This is a schematic diagram of the front view of the touch screen structure with integrated light sensing of the utility model;

[0022] Figure 6 It is a schematic diagram of the pin structure of the light-sensing IC in the touch screen structure with integrated light sensing of the utility model;

[0023] Figure 7 The utility model is a schematic diagram of the internal wiring of the FPC in the touch screen structure with integrated light sensing.

[0024] The reference numerals and names in the figures are as follows:

[0025] 1. Cover plate; 2. Main FPC; 201. Double-sided tape; 3. Protective adhesive 1; 4. Touch film sensor; 5. FPC; 6. Photosensitive component; 601. Component protection film; 602. Photosensitive IC; 7. Optical adhesive OCA; 8. PI reinforcement board; 9. Protective adhesive 2; 10. Black semi-transparent hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-7A touch screen structure with integrated light sensing includes a cover plate 1, a main FPC 2, a touch film sensor 4, a light sensing FPC and a PI reinforcement plate 8, wherein the light sensing FPC includes an FPC 5 and a light sensing element 6; the light sensing element 6 includes an element protection film 601 and a light sensing IC 602, wherein the element protection film 601 is arranged on the outer side of the light sensing FPC, and the element protection film 601 can protect the light sensing FPC; the PI reinforcement plate 8 is installed on the top of one side of the cover plate 1, the FPC 5 is installed on the PI reinforcement plate 8, and the light sensing IC 602 is arranged on the FPC 5, and holes for exposing the light sensing surface of the light sensing IC 602 are opened on the FPC 5 and the PI reinforcement plate 8, and a black semi-transparent hole 10 is opened on the front side of the cover plate 1 and at a position corresponding to the light sensing IC 602, and external light can pass through the black semi-transparent hole 10 of the touch screen cover plate 1 to irradiate the surface of the light sensing IC 602, and the backlight brightness is adjusted by the intensity of the external light, thereby finally achieving the effect of adjusting the screen brightness.

[0028] It should be noted that, in the present application, the touch screen and the light sensing element 6 do not need to be assembled separately, but are made into one piece, which can make the structure simpler and make the overall structure design more flexible.

[0029] See also Figure 1-2 In this embodiment, binding positions are set at both ends of FPC5, and the binding positions at both ends of FPC5 are bound to the touch film sensor 4 to fix it, and the touch film sensor 4 is designed with metal wiring, and the light sensing circuit of FPC5 is connected to the main FPC2 through the metal wiring on the touch film sensor 4; the touch film sensor 4 is set on the cover plate 1, and the touch film sensor 4 bound with FPC5 is bonded to the cover plate 1 through optical adhesive OCA7.

[0030] It should be noted that, through the arrangement design of the above structure, the overall structure can be made simple, occupying less space, while ensuring the stability of the connections between the components.

[0031] See also Figure 1 In this embodiment, the main FPC 2 is installed at the bottom of the cover plate 1, and a protective adhesive 3 is provided at the connection between the main FPC 2 and the cover plate 1, and a double-sided adhesive 201 is provided at the bottom of the back of the main FPC 2.

[0032] It should be noted that a protective adhesive 3 is provided at the connection between the main FPC2 and the cover plate 1, the purpose of which is to make the connection between the main FPC2 and the cover plate 1 tighter to prevent falling off, and at the same time to achieve the purpose of waterproofing and dustproofing at the connection. The double-sided adhesive 201 is provided on the main FPC2 to facilitate the fitting and fixing of the main FPC2 with other structures.

[0033] See also Figure 2In this embodiment, protective glue 9 is also provided on the left and right sides of the PI reinforcing plate 8, and the circuits at the left and right ends of the FPC 5 are solidified and positioned by the protective glue 9.

[0034] It should be noted that, by providing the protective glue 9, the circuits at the left and right ends of the FPC 5 can be glued and cured to make them more stable.

[0035] See also Figure 2 and Figure 6 In this embodiment, the photosensitive IC 602 is provided with four pins, namely, an SDA pin, an IOVDD pin, a GND pin and an SCL pin. The photosensitive IC 602 is soldered on the FPC 5 through the four pins; the four pins on the photosensitive IC 602 are respectively located at the four corners of the photosensitive IC 602 and are symmetrically distributed in pairs.

[0036] It should be noted that the photosensitive IC602 is soldered to the FPC5 through four pins, which ensures the stability of the photosensitive IC602 on the FPC5. The photosensitive IC602 is installed near the middle of the FPC5 so that it can correspond to the black semi-transparent hole 10, making it convenient to adjust the backlight brightness according to the intensity of external light.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A touch screen structure with integrated light sensing, characterized in that: It comprises a cover plate (1), a main FPC (2), a touch film sensor (4), a light-sensitive FPC and a PI reinforcement plate (8), wherein the light-sensitive FPC comprises an FPC (5) and a light-sensitive element (6); The photosensitive element (6) comprises an element protection film (601) and a photosensitive IC (602); The PI reinforcing plate (8) is mounted on the top of one side of the cover plate (1), the FPC (5) is mounted on the PI reinforcing plate (8), the photosensitive IC (602) is arranged on the FPC (5), and holes for exposing the light-sensing surface of the photosensitive IC (602) are provided on the FPC (5) and the PI reinforcing plate (8).

2. The touch screen structure with integrated light sensing according to claim 1, characterized in that: The FPC (5) is provided with binding positions at both left and right ends. The binding positions at both left and right ends of the FPC (5) are bound to the touch film sensor (4) to fix it. The touch film sensor (4) is provided with metal wiring. The light sensing circuit of the FPC (5) is connected to the main FPC (2) through the metal wiring on the touch film sensor (4).

3. The touch screen structure with integrated light sensing according to claim 1, characterized in that: The touch film sensor (4) is arranged on the cover plate (1), and the touch film sensor (4) bound with the FPC (5) is bonded to the cover plate (1) via optical adhesive OCA (7).

4. The touch screen structure with integrated light sensing according to claim 1, characterized in that: The main FPC (2) is installed at the bottom of the cover plate (1), and a protective glue (3) is provided at the connection between the main FPC (2) and the cover plate (1).

5. The touch screen structure with integrated light sensing according to claim 1, characterized in that: Protective glue 2 (9) is also provided on the left and right sides of the PI reinforcing plate (8), and the circuits at the left and right ends of the FPC (5) are both solidified and positioned by the protective glue 2 (9).

6. The touch screen structure with integrated light sensing according to claim 1, characterized in that: The light sensing IC (602) is provided with four pins, namely an SDA pin, an IOVDD pin, a GND pin and an SCL pin. The light sensing IC (602) is welded on the FPC (5) via the four pins.

7. The touch screen structure with integrated light sensing according to claim 6, characterized in that: The four pins on the light sensing IC (602) are respectively located at the four corners of the light sensing IC (602) and are symmetrically distributed in pairs.

8. The touch screen structure with integrated light sensing according to claim 1, characterized in that: The element protection film (601) is arranged on the outer side of the photosensitive FPC.

9. The touch screen structure with integrated light sensing according to claim 1, characterized in that: A black semi-transparent hole (10) is provided on the front side of the cover plate (1) at a position corresponding to the light-sensing IC (602).

10. The touch screen structure with integrated light sensing according to claim 1, characterized in that: A double-sided adhesive tape (201) is provided at the bottom of the back side of the main FPC (2).

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