Rigid-flex circuit board with light sensation, charging and touch control functions
By designing a hardware-hard-combined circuit board with light sensing, charging and touch control functions, the complex structure of existing electronic touch products is solved, effective integration and connection of functions is achieved, and product structure is simplified.
Patent Information
- Application Number
- CN202421661171.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-12
AI Technical Summary
When existing electronic touch products realize multifunctionality, there are major challenges in component position design and placement, resulting in complex structure and difficulty in simplification.
Design a soft and hard circuit board with light sensing, charging and touch control functions, and integrate solar cells, touch control function layers and light sensing ICs, and reasonably design connection lines to simplify the structure of electronic touch products.
It realizes effective integration and connection of different functions in electronic touch products, simplifies the product structure, and improves the overall design simplicity and feasibility.
Smart Images
Figure CN222996758U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit boards, in particular to a soft-hard combined circuit board with light sensing, charging and touch functions. Background Art
[0002] With the continuous advancement of technology, electronic touch products have more and more functions, and more and more electronic touch products are integrated with various functions, which leads to more and more accessories to increase the structure, posing a great challenge to structural design.
[0003] However, different components are required to realize different functions of electronic touch products, and the position design and placement of components become a big problem. Electronic touch products usually include a cover plate, a display screen and a backlight. A circuit board is provided on the display screen, and the end of the circuit board away from the display screen is bent to the back of the backlight. Electronic touch products usually have functions such as light sensing, charging and touch functions. Electronic touch products are equipped with solar cells for absorbing solar energy, a touch function layer for realizing the touch function and a light sensing IC for light sensing. Electronic touch products need to be connected to the circuit board to ensure the normal use of these functions. Different connection lines need to be designed on the circuit board for different functions of electronic touch products. Failure to design the connection lines properly will make the structure of the electronic touch product more complicated, which is not conducive to the simplification of the structure. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a hard-soft combined circuit board with light sensing, charging and touch functions.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] A soft-hard combination circuit board with light sensing, charging and touch functions, comprising: a circuit board, the circuit board is used to be bound to an electronic touch product, the upper end of the circuit board is upwardly extended with a solar cell positive electrode binding pin and a solar cell negative electrode binding pin, the solar cell positive electrode binding pin and the solar cell negative electrode binding pin are used to connect with the positive and negative electrodes of the solar cell on the electronic touch product, the middle area of the circuit board is provided with a touch pin and a light sensing IC, the touch pin is used to connect with the touch function layer of the electronic touch product, the light sensing IC is used for light sensing, the circuit board is provided with a component area near the lower edge, the component area is provided with a connector for connecting to a customer's mainboard and a touch IC, the solar cell positive electrode binding pin, the solar cell negative electrode binding pin, the touch pin and the light sensing IC are all connected to the pins of the connector, and the touch pin is also connected to the touch IC.
[0007] In one embodiment, a first curved FPC soft board extends upward from the upper end of the circuit board, and the solar cell positive electrode binding pin and the solar cell negative electrode binding pin are both located at the upper end of the first FPC soft board.
[0008] In one embodiment, a second FPC soft board is provided at one end of the circuit board away from the first FPC soft board, the first FPC soft board and the second FPC soft board are integrally formed, there are two touch pins, and the two touch pins are arranged near the upper edge of the second FPC soft board.
[0009] In one embodiment, the photosensitive IC is located between the two touch pins, the photosensitive IC is located on the back of the second FPC soft board, a through hole is provided in the second FPC soft board relative to the photosensitive IC, a black double-sided adhesive is attached to the side of the second FPC soft board relative to the photosensitive IC, and the black double-sided adhesive also has a through hole in the position relative to the photosensitive IC.
[0010] In one embodiment, a first hard board is provided on a side of the second FPC soft board facing the photosensitive IC, a pin pad is provided on a side of the first hard board facing the photosensitive IC, and the photosensitive IC is soldered to the pin pad.
[0011] In one embodiment, the photosensitive surface of the photosensitive IC is arranged toward the first hard board.
[0012] In one embodiment, the component area is located near the lower edge of the second FPC soft board, the component area is located below the photosensitive IC, and the component area is located on the front side of the second FPC soft board, and a plurality of components are also arranged in the component area.
[0013] In one embodiment, a second hard board is provided on a side of the second FPC soft board facing away from the component area, and the second hard board is used for ground connection.
[0014] In one embodiment, a conductive double-sided adhesive is attached to one side of the second hard board away from the second FPC soft board, one side of the conductive double-sided adhesive is attached to the second hard board, and the other side of the conductive double-sided adhesive is used to attach to the backlight of the electronic touch product to achieve grounding connection.
[0015] In one of the embodiments, the second FPC flexible board is provided with a bending area between the component area and the photosensitive IC. The bending area is located on the back surface of the second FPC flexible board, and an opening is formed in the middle area of the bending area. The lower end of the first rigid board is located within the opening. The circuit board is composed of a PI layer and metal copper traces. The PI layer is hollowed out at the position of the second FPC flexible board relative to the bending area, and a layer of solder mask is covered on the metal copper traces. The circuit board is bent along the bending area to the back surface of the backlight, and the conductive double-sided adhesive on the second rigid board is grounded and connected to the back surface of the backlight.
[0016] Compared with the prior art, the present utility model has at least the following advantages:
[0017] A flexible-rigid combination circuit board with photosensing, charging, and touch functions of the present utility model integrates photosensing, solar charging, and touch functions, and reasonably designs the connection circuits of different functions of an electronic touch product to simplify the overall structure of the electronic touch product. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below.
[0019] Figure 1 FIG. 15 is a front structural schematic diagram of a flexible-rigid combination circuit board with photosensing, charging, and touch functions provided by the present utility model;
[0020] Figure 2 FIG. 19 is a side structural schematic diagram of a flexible-rigid combination circuit board with photosensing, charging, and touch functions provided by the present utility model;
[0021] Figure 3 FIG. 23 is a back structural schematic diagram of a flexible-rigid combination circuit board with photosensing, charging, and touch functions provided by the present utility model.
[0022] BRIEF DESCRIPTION OF THE DRAWINGS: 10. Circuit board; 101. PI layer; 102. Metal copper traces; 11. First FPC flexible board; 111. Solar cell positive binding pin; 112. Solar cell negative binding pin; 12. Second FPC flexible board; 121. Through hole; 20. Touch pin; 30. Photosensitive IC; 40. Black double-sided adhesive; 50. First rigid board; 60. Component area; 61. Connector; 62. Touch IC; 63. Components; 70. Second rigid board; 80. Conductive double-sided adhesive; 90. Bending area; 91. Solder mask. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.
[0024] A flexible-rigid combination circuit board with light sensing, charging and touch functions, refer to Figure 1 , including a circuit board (10), which is used to be bound to an electronic touch product to realize different functions of the electronic touch product. In this embodiment, the functions of the electronic touch product are light sensing, charging and touch functions. A solar cell for absorbing solar energy and a touch function layer for realizing the touch function are provided on the electronic touch product. The solar cell and the touch function layer on the electronic touch product need to be connected to the circuit board (10) to ensure their normal operation.
[0025] Refer to Figure 1 , the circuit board (10) is composed of a PI layer (101) and a metal copper trace (102) provided on the PI layer (101). One end of the circuit board (10) extends upward with an arc-shaped first FPC flexible board (11). The first FPC flexible board (11) is a flexible circuit board, and the first FPC flexible board (11) can be arranged along the shape of the electronic touch product to adapt to the shape of the electronic touch product. A solar cell positive binding pin (111) and a solar cell negative binding pin (112) are provided at the upper end of the first FPC flexible board (11). The solar cell positive binding pin (111) and the solar cell negative binding pin (112) are used to bind to the positive and negative poles of the solar cell on the electronic touch product, so as to realize that the electronic touch product can absorb solar energy through the solar cell and convert it into electric energy for use, so as to realize the charging function.
[0026] Refer to Figure 2 and Figure 3 , a second FPC flexible board (12) is provided at one end of the circuit board (10) away from the first FPC flexible board (11). The first FPC flexible board (11) and the second FPC flexible board (12) are integrally formed. Touch pins (20) are provided at a position near the upper side edge of the second FPC flexible board (12). There are two touch pins (20), and the two touch pins (20) are arranged at a certain distance, and the two touch pins (20) are located on the back of the second FPC flexible board (12). The two touch pins (20) are used to connect to the touch function layer of the electronic touch product, so as to ensure the normal use of the touch function of the electronic touch product.
[0027] Refer to Figure 2 and Figure 3, a light-sensing IC (30) for photosensing is provided between two touch pins (20). The light-sensing IC (30) is located on the back side of the second FPC flexible board (12). A through hole (121) is provided at the position of the second FPC flexible board (12) relative to the light-sensing IC (30) to facilitate the entry of external light into the light-sensing IC (30). A black double-sided adhesive (40) is attached to the side of the second FPC flexible board (12) facing away from the light-sensing IC (30). A through hole (121) is also provided at the position of the black double-sided adhesive (40) relative to the light-sensing IC (30). The side of the black double-sided adhesive (40) away from the second FPC flexible board (12) is used to fit with the cover plate of the electronic touch product. A first rigid board (50) is provided on the side of the second FPC flexible board (12) facing the light-sensing IC (30). The first rigid board (50) is a FR4 rigid board. Pin pads are provided on the side of the first rigid board (50) facing the light-sensing IC (30). The light-sensing IC (30) is soldered to the pin pads, and the photosensitive surface of the light-sensing IC (30) faces the first rigid board (50). The light-sensing IC (30) is used to absorb external light to sense the intensity of the external light, so as to facilitate the adjustment of the screen brightness of the electronic touch product.
[0028] Refer to Figure 1 and Figure 3 , a component area (60) is provided at the position of the second FPC flexible board (12) near the lower edge. The component area (60) is located below the light-sensing IC (30) and on the front side of the second FPC flexible board (12). A connector (61), a touch IC (62), and a plurality of components (63) for connecting to the customer main board are provided in the component area (60). Among them, the positive binding pin (111) of the solar cell and the negative binding pin (112) of the solar cell are both connected to the pins on the connector (61). The two touch pins (20) are connected to the pins of the touch IC (62) and the pins on the connector (61). The light-sensing IC (30) is connected to the pins on the connector (61). The connector (61) is connected to the customer main board, so as to ensure that the positive binding pin (111) of the solar cell, the negative binding pin (112) of the solar cell, and the two touch pins (20) are connected to the customer host, thereby realizing the corresponding functions on the electronic touch product.
[0029] Refer to Figure 2 , a second rigid board (70) is provided on the side of the second FPC flexible board (12) facing away from the component area (60). The second rigid board (70) is used for grounding connection. A conductive double-sided adhesive (80) is attached to the side of the second rigid board (70) away from the second FPC flexible board (12). One side of the conductive double-sided adhesive (80) is attached to the second rigid board (70), and the other side of the conductive double-sided adhesive (80) is used to attach to the backlight iron frame of the electronic touch product to achieve grounding connection.
[0030] Further, referring to Figure 2 , a layer of metal copper traces (102) is added to one side of the first rigid board (50) and the second rigid board (70) away from the second FPC flexible board (12) to support the photosensitive IC (30) and the components (63) respectively.
[0031] Further, referring to Figure 3 , a bending area (90) is provided between the component area (60) and the photosensitive IC (30) on the second FPC flexible board (12). The bending area (90) is located on the back of the second FPC flexible board (12). An opening is provided in the middle area of the bending area (90), and the lower end of the first rigid board (50) is located in the opening. Since the second FPC flexible board (12) is composed of a PI layer (101) and metal copper traces (102), the PI layer (101) is hollowed out at the position of the second FPC flexible board (12) relative to the bending area (90), and a layer of green oil (91) is covered in the bending area (90). The green oil (91) covers the metal copper traces (102) in the bending area (90) to make the bending area (90) soft and easy to bend. When the circuit board (10) is bent to the back of the backlight of the electronic touch product, it is bent along the position of the bending area (90), so that the lower end of the circuit board (10) is bent to the back of the backlight, and the conductive double-sided adhesive (80) on the second rigid board (70) is pasted to the back of the backlight to achieve a grounding connection.
[0032] Referring to Figures 1 - 3 , the rigid-flex circuit board (10) integrates the functions of photosensing, solar charging and touch control, and reasonably designs the connection circuits of different functions of the electronic touch product to simplify the overall structure of the electronic touch product.
[0033] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.
Claims
1. A rigid-soft circuit board with light sensing, charging and touch functions, characterized in that: include: A circuit board (10), the circuit board (10) being used to be bound to an electronic touch product, a solar cell positive electrode binding pin (111) and a solar cell negative electrode binding pin (112) extending upward from the upper end of the circuit board (10), the solar cell positive electrode binding pin (111) and the solar cell negative electrode binding pin (112) being used to be connected to the positive and negative electrodes of the solar cell on the electronic touch product, a touch pin (20) and a light sensing IC (30) being provided in the middle area of the circuit board (10), the touch pin (20) being used to be connected to the electronic touch product The touch function layer of the solar cell (10) is connected, the light sensing IC (30) is used for sensing light, a component area (60) is provided near the lower edge of the circuit board (10), a connector (61) for connecting to a customer's mainboard and a touch IC (62) are provided in the component area (60), the solar cell positive electrode binding pin (111), the solar cell negative electrode binding pin (112), the touch pin (20) and the light sensing IC (30) are all connected to the pins of the connector (61), and the touch pin (20) is also connected to the touch IC (62).
2. A rigid-soft circuit board with light sensing, charging and touch functions according to claim 1, characterized in that: An arc-shaped first FPC soft board (11) extends upward from the upper end of the circuit board (10), and the solar cell positive electrode binding pin (111) and the solar cell negative electrode binding pin (112) are both located at the upper end of the first FPC soft board (11).
3. A rigid-soft circuit board with light sensing, charging and touch functions according to claim 2, characterized in that: A second FPC soft board (12) is provided at one end of the circuit board (10) away from the first FPC soft board (11); the first FPC soft board (11) and the second FPC soft board (12) are integrally formed; there are two touch pins (20); the two touch pins (20) are arranged at positions close to the upper edge of the second FPC soft board (12).
4. A rigid-soft circuit board with light sensing, charging and touch functions according to claim 3, characterized in that: The light sensing IC (30) is located between the two touch pins (20), the light sensing IC (30) is located on the back side of the second FPC soft board (12), a through hole (121) is provided on the second FPC soft board (12) at a position relative to the light sensing IC (30), a black double-sided adhesive (40) is attached to a side of the second FPC soft board (12) relative to the light sensing IC (30), and the black double-sided adhesive (40) is also provided with a through hole (121) at a position relative to the light sensing IC (30).
5. A rigid-soft circuit board with light sensing, charging and touch functions according to claim 4, characterized in that: A first hard board (50) is arranged on the side of the second FPC soft board (12) facing the light sensing IC (30), and a pin pad is arranged on the side of the first hard board (50) facing the light sensing IC (30), and the light sensing IC (30) is soldered to the pin pad.
6. A rigid-flexible circuit board with light sensing, charging and touch functions according to claim 5, characterized in that: The photosensitive surface of the photosensitive IC (30) is arranged toward the first hard board (50).
7. A rigid-soft circuit board with light sensing, charging and touch functions according to claim 6, characterized in that: The component area (60) is located near the lower edge of the second FPC soft board (12), the component area (60) is located below the photosensitive IC (30), and the component area (60) is located on the front side of the second FPC soft board (12), and a plurality of components (63) are also arranged in the component area (60).
8. A rigid-flexible circuit board with light sensing, charging and touch functions according to claim 7, characterized in that: A second hard board (70) is provided on the side of the second FPC soft board (12) facing away from the component area (60), and the second hard board (70) is used for grounding connection.
9. A rigid-flexible circuit board with light sensing, charging and touch functions according to claim 8, characterized in that: A conductive double-sided adhesive (80) is attached to the side of the second hard board (70) away from the second FPC soft board (12); one side of the conductive double-sided adhesive (80) is attached to the second hard board (70); and the other side of the conductive double-sided adhesive (80) is used to attach to the backlight of the electronic touch product to achieve grounding connection.
10. A rigid-flexible circuit board with light sensing, charging and touch functions according to claim 9, characterized in that: The second FPC soft board (12) is provided with a bending area (90) between the component area (60) and the light sensing IC (30), and the bending area (90) is located on the back side of the second FPC soft board (12). A hole is opened in the middle area of the bending area (90), and the lower end of the first hard board (50) is located in the opening. The circuit board (10) is composed of a PI layer (101) and a metal copper trace (102). The second FPC soft board (12) hollows out the PI layer (101) relative to the position of the bending area (90), and covers the metal copper trace (102) with a layer of green oil (91). The circuit board (10) is bent along the bending area (90) to the back side of the backlight, and the conductive double-sided adhesive (80) on the second hard board (70) is grounded to the back side of the backlight.