Paster card
By designing a flexible circuit board and a surface-mount card for the main control chip, the problem of a single mobile phone interface not being able to simultaneously connect multiple SIM cards was solved, enabling simultaneous network access for two SIM cards and enhancing security and functionality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2026-03-24
AI Technical Summary
In existing technologies, a single mobile phone interface cannot simultaneously accept more than two SIM cards, and two SIM cards cannot simultaneously access the mobile communication network.
Design a patch card that uses a flexible circuit board and a main control chip. It is electrically connected to two SIM cards through the contact area on the flexible circuit board, and the main control chip bridges and forwards communication commands, enabling the mobile phone to access two SIM cards at the same time and realize simultaneous network access for two SIM cards.
It enables simultaneous access to two SIM cards through a single mobile phone interface, and both SIM cards can access the mobile network. It reduces the overall thickness after attaching two SIM cards, making it easier to insert into the phone card slot. It supports the use of existing card trays and adds network security control and transfer payment functions.
Smart Images
Figure CN224037352U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of SIM patch cards, and relates to a patch card. BACKGROUND
[0002] A SIM (Subscriber Identity Module) card is an IC card held by a mobile user of a GSM system, and is referred to as a "user identification card". A commonly used patch card has a length and a width consistent with those of a SIM card on a plane, and has a thickness less than 0.12 mm. The patch card is attached to a SIM card of a common mobile phone, and the two are inserted into a card slot of the mobile phone. The patch card serves as a bridge chip between the mobile phone and the SIM card, simulates communication instructions and data of the SIM card of the mobile phone, and makes the mobile phone believe that a SIM card is connected. When the mobile phone communicates with the real SIM card, special data can be inserted to achieve special purposes, such as increasing network security control and transfer payment functions through the patch card.
[0003] However, the patch card simulates a SIM card, so only one real SIM card can access a mobile communication network at the same time. Therefore, how to provide a patch card to enable a single mobile phone interface to access two or more SIM cards at the same time and enable the two SIM cards to access a mobile communication network at the same time has become a technical problem to be solved. CONTENT OF THE INVENTION
[0004] To overcome the problems in the related art, the application aims to provide a patch card that can enable a single mobile phone interface to access two or more SIM cards at the same time and enable the two SIM cards to access a mobile communication network at the same time.
[0005] The application is achieved by the following technical solution.
[0006] The technical solution provides a patch card for electrically connecting two SIM cards to a mobile phone, including: a flexible circuit board, a main control chip is arranged on the flexible circuit board, a first surface of the flexible circuit board is provided with a second contact area for electrically connecting a first SIM card and a third contact area for electrically connecting a second SIM card, and a first contact area is arranged on a second surface of the flexible circuit board.
[0007] The first contact area is provided with at least five contact points for forming a communication interface with the mobile phone, and the second contact area and the third contact area are each provided with at least five contact points for forming a communication interface.
[0008] The application is further provided as follows: the contact points on the second contact area and the third contact area are conductive bumps arranged on the flexible circuit board.
[0009] The utility model further sets up, the contact point on first contact area is set up on the conductive touch disc of flexible circuit board.
[0010] The utility model further sets up, the main control chip adopts the chip of SK32G101 type.
[0011] The utility model further sets up, the flexible circuit board can fold to first face, make second contact area and third contact area relative, be used for placing first SIM card and second SIM card of relative adhesion between second contact area and third contact area.
[0012] The utility model further sets up, the flexible circuit board sets up two rectangular structures connected through folding area, and the width of folding area is less than the width of rectangular structure.
[0013] The utility model further sets up, second contact area and third contact area all set up rectangular structure, and the contact point evenly distributed on it.
[0014] The utility model further sets up, first contact area sets up rectangular structure, and the contact point evenly distributed on it.
[0015] The above technical scheme has following technical effect: through the bridging forwarding of patch card main control chip, make the mobile phone access two SIM cards through a communication interface once, and two SIM cards can all enter mobile network, reduce the total thickness of patch card adhesion two SIM cards, easy to insert mobile phone card slot, in addition, support the use of original card holder of mobile phone, on this basis, can increase network security control, transfer payment function to two SIM cards respectively.
[0016] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS
[0017] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout the several views, and in which the exemplary embodiments of the present application are shown.
[0018] Figure 1 It is the structural schematic diagram shown in an embodiment of the present application;
[0019] Figure 2 It is the connection schematic diagram shown in an embodiment of the present application;
[0020] Figure 3 It is the first surface schematic diagram of flexible circuit board shown in an embodiment of the present application;
[0021] Figure 4 is a second surface schematic view of the flexible circuit board shown in an embodiment of the present application;
[0022] Figure 5 is a right view shown in an embodiment of the present application.
[0023] Reference signs: 1, master control chip; 2, first contact area; 3, second contact area; 4, third contact area; 5, flexible circuit board. DETAILED DESCRIPTION
[0024] The technical solutions in some embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0025] The technical solutions of the embodiments of the present application will be described in detail below in conjunction with the drawings.
[0026] The present embodiment is a patch card for electrically connecting two SIM cards to a mobile phone, as shown in Figures 1-5 , comprising: a flexible circuit board 5, a master control chip 1 is arranged on the flexible circuit board 5, a first surface of the flexible circuit board 5 is provided with a second contact area 3 for electrically connecting with a first SIM card and a third contact area 4 for electrically connecting with a second SIM card, and a first contact area 2 is arranged on a second surface of the flexible circuit board 5;
[0027] Among them, the first contact area 2 is provided with at least five contact points for forming a communication interface with the mobile phone, and the second contact area 3 and the third contact area 4 are each provided with at least five contact points for forming a communication interface.
[0028] It should be noted that the first contact area 2 includes Vcc (voltage), Gnd (ground), Rst (reset), Clk (clock signal), IO (input output), and other contact points to form an interface for the master control chip 1 to communicate with the card slot contact points of the mobile phone.
[0029] The second contact area 3 and the third contact area 4 also include Vcc, Gnd, Rst, Clk, IO, and other contact points to serve as a communication interface to contact and connect the first SIM card and the second SIM card arranged.
[0030] As shown in Figure 3As shown, the contact points on the second contact area 3 and the third contact area 4 are conductive bumps disposed on the flexible circuit board 5.
[0031] like Figure 3 As shown, the contact points on the first contact area 2 are conductive contact pads disposed on the flexible circuit board 5.
[0032] like Figures 1-4 As shown, the main control chip 1 uses the SK32G101 chip, which has a built-in eSIM emulation program.
[0033] As shown in the figure Figure 4 As shown, the flexible circuit board 5 can be folded toward the first side, so that the second contact area 3 and the third contact area 4 are opposite each other, and the first SIM card and the second SIM card that are attached are placed between the second contact area 3 and the third contact area 4.
[0034] It should be noted that, during use, the first SIM card and the second SIM card are placed on both sides of the phone's card tray. The patch card is folded inward with the side containing the protrusion as the inside, so that the second contact area 3 and the third contact area 4 respectively contact the metal surface of one SIM card to form a connection. At the same time, the first contact area 2 of the patch card is located on the other side of the second contact area 3 and the third contact area 4, and can be inserted into the phone's card slot to form a connection with the phone.
[0035] like Figures 1-5 As shown, the flexible circuit board 5 is configured as two rectangular structures connected by a folded area, and the width of the folded area is smaller than the width of the rectangular structure.
[0036] like Figures 1-5 As shown, both the second contact area 3 and the third contact area 4 are set as rectangular structures, and the contact points set on them are evenly distributed.
[0037] like Figures 1-5 Figures 1-5 As shown, the first contact area 2 is set as a rectangular structure, and the contact points set on it are evenly distributed.
[0038] Working principle: The mobile phone queries the performance and status of the eSIM chip. The returned query data provides information on the number of SIM cards carried in the eSIM chip. That is, the main control chip 1 connects to two SIM cards through two sets of second contact areas 3 and third contact areas 4 with the same direction. If both SIM cards are successfully connected, the phone returns information that there are two SIM cards and both are in working condition. If only one SIM card is connected, the phone returns information that there are two SIM cards, but only one SIM card is in working condition.
[0039] The mobile phone obtains the number of working SIM cards according to the return data of the queried eSIM chip, and then applies for the same number of communication channels. Each communication channel communicates with a SIM card respectively. The mobile phone distinguishes the communication channels through the first byte (CLA byte) of the communication APDU instruction (indicating the instruction class). The master chip 1 on the patch card also distinguishes the communication channels through the first byte of the APDU instruction, and determines which SIM card to forward the instruction of the mobile phone to through the byte.
[0040] Through the above method, the mobile phone accesses two SIM cards through one communication interface at a time, and the two SIM cards can enter the mobile network at the same time, that is, two SIM cards are installed in one card slot. On this basis, network security control and transfer payment functions can be added to the two SIM cards respectively.
[0041] The total thickness of the patch card after being attached to two SIM cards is reduced, which is easy to insert into the card slot of the mobile phone 1, and the use of the original card holder of the mobile phone is supported.
[0042] The above has described the embodiments of the present application. The above description is exemplary and is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical applications or improvements to the technology in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.
Claims
1. A patch card for electrically connecting two SIM cards to a mobile phone, characterized in that, include: A flexible circuit board (5) is provided with a main control chip (1). The first side of the flexible circuit board (5) is provided with a second contact area (3) for electrical connection with a first SIM card and a third contact area (4) for electrical connection with a second SIM card. The second side of the flexible circuit board (5) is provided with a first contact area (2). The first contact area (2) is provided with at least five contact points to form a communication interface with the mobile phone, and the second contact area (3) and the third contact area (4) are both provided with at least five contact points to form a communication interface.
2. The patch card according to claim 1, characterized in that, The contact points on the second contact area (3) and the third contact area (4) are conductive bumps disposed on the flexible circuit board (5).
3. The patch card according to claim 1, characterized in that, The contact points on the first contact area (2) are conductive contact pads disposed on the flexible circuit board (5).
4. The patch card according to claim 1, characterized in that, The main control chip (1) is a chip with the model number SK32G101.
5. The patch card according to claim 1, characterized in that, The flexible circuit board (5) can be folded toward the first side, so that the second contact area (3) and the third contact area (4) are opposite each other, and the first SIM card and the second SIM card are placed between the second contact area (3) and the third contact area (4).
6. The patch card according to claim 1, characterized in that, The flexible circuit board (5) is configured as two rectangular structures connected by a folded area, and the width of the folded area is smaller than the width of the rectangular structure.
7. The patch card according to claim 2, characterized in that, The second contact area (3) and the third contact area (4) are both set as rectangular structures, and the contact points set on them are evenly distributed.
8. The patch card according to claim 3, characterized in that, The first contact area (2) is set as a rectangular structure, and the contact points set thereon are evenly distributed.