An HDMI female socket connector

Abstract

The application discloses an HDMI female seat connector, and relates to the technical field of electronic connectors, which comprises a metal shell, a plastic main body and a terminal module. The terminal module is accommodated in the plastic main body and comprises an upper terminal assembly and a lower terminal assembly. The upper terminal assembly comprises a plurality of upper terminals, and the lower terminal assembly comprises a plurality of lower terminals. The second region of the upper terminal and the fifth region of the lower terminal are parts where the upper terminal and the lower terminal are embedded in the plastic main body, and the second region and the fifth region are staggered with each other in the arrangement direction, forming a structure that is not coplanar. By arranging the wiring regions of the upper and lower terminal assemblies in a staggered layout that is not coplanar, the physical distance between the non-paired signal terminals is effectively increased in the limited connector space, so that the high-frequency crosstalk and electromagnetic interference between the terminals, especially between different signal groups, are significantly reduced, and the integrity and stability of signal transmission at an ultrahigh speed are ensured.

Description

Technical Field

[0001] This application relates to the field of electronic connector technology, and in particular to an HDMI female connector. Background Technology

[0002] Since the official release of the HDMI 1.0 standard in 2002, HDMI technology has undergone several upgrades and iterations, including versions HDMI 1.1, 1.2, 1.3, 1.4, 2.0, and 2.1. Each version has improved bandwidth, refresh rate, and resolution to support higher levels of video and audio content. In particular, with the development of ultra-high-definition video technology, the new generation of HDMI technology needs to support higher bandwidth, higher resolution, and higher refresh rates. The traditional HDMI female connector structure is insufficient to meet the needs of data-intensive applications.

[0003] Traditional HDMI female connectors typically employ a one-piece injection-molded structure, with terminals divided into upper and lower terminal assemblies, located on the upper and lower surfaces of the plug, respectively. In this traditional design, the upper and lower terminal assemblies are usually on the same or nearly plane in the area where they pass through the mating part. This design limits the spacing between adjacent terminals, making it difficult to customize the width and position of the terminals. As HDMI technology evolves towards higher speeds and bandwidths, the traditional terminal arrangement results in close proximity between adjacent terminals, easily leading to signal crosstalk and electromagnetic interference, affecting the transmission quality of differential signals and consequently impacting key performance indicators such as data transmission rate, signal integrity, and resolution. Furthermore, the traditional one-piece injection molding process struggles to achieve precise terminal positioning and molding of the plastic body when dealing with more complex terminal positions, limiting the performance improvement of HDMI female connectors in ultra-high-speed applications. Therefore, optimizing the terminal arrangement structure, reducing signal interference between terminals, and improving the transmission rate and signal quality of HDMI female connectors while ensuring connection reliability has become a crucial technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an HDMI female connector that can reduce high-frequency crosstalk and electromagnetic interference between terminals of different signal groups, ensuring the integrity and stability of signal transmission at ultra-high speeds.

[0005] An HDMI female connector according to an embodiment of this application includes: a metal housing; a plastic body disposed within the metal housing, including a plug portion and a mating portion connected together; a terminal module including an upper terminal assembly and a lower terminal assembly; the upper terminal assembly includes a plurality of upper terminals, each upper terminal including a first region, a second region, and a third region connected end-to-end in sequence, the first region being disposed on the upper surface of the plug portion for mating with an external connection terminal, the second region passing through the mating portion, and the third region for electrical connection with an external circuit board; the lower terminal assembly includes a plurality of lower terminals, each lower terminal including a fourth region, a fifth region, and a sixth region connected end-to-end in sequence, the fourth region being disposed on the lower surface of the plug portion for mating with an external connection terminal, the fifth region passing through the mating portion, and the sixth region for electrical connection with an external circuit board; wherein the second region and the fifth region are not coplanar.

[0006] The HDMI female connector according to the embodiments of this application has at least the following beneficial effects: The HDMI female connector achieves a staggered arrangement of the upper and lower rows of terminals in the vertical direction by setting the second region of the upper terminal assembly and the fifth region of the lower terminal assembly within the plastic body to be non-coplanar. This design increases the physical distance between the upper and lower rows of terminals, effectively reducing crosstalk caused by electromagnetic induction during high-frequency signal transmission, ensuring signal integrity, and thus meeting the requirements of higher data transmission rates. Simultaneously, since the upper and lower rows of terminals are no longer confined to the same vertical plane, this staggered arrangement provides flexible design space and possibilities for subsequent personalized width adjustments or lateral position offsets for specific terminals (e.g., terminals transmitting differential signal pairs), helping to achieve more precise impedance matching and signal isolation, further improving the overall performance and reliability of the connector.

[0007] According to some embodiments of this application, the upper terminal assembly includes a first terminal, a third terminal, a fifth terminal, a seventh terminal, a ninth terminal, an eleventh terminal, a thirteenth terminal, a fifteenth terminal, a seventeenth terminal, and a nineteenth terminal arranged horizontally in sequence; The lower terminal assembly includes a second terminal, a fourth terminal, a sixth terminal, an eighth terminal, a tenth terminal, a twelfth terminal, a fourteenth terminal, a sixteenth terminal, and an eighteenth terminal arranged horizontally in sequence.

[0008] According to some embodiments of this application, the width of the second region of the first terminal and the width of the second region of the third terminal are greater than the width of the fifth region of the second terminal.

[0009] According to some embodiments of this application, the second region of the first terminal is widened in a direction toward the second region of the third terminal; the second region of the third terminal is widened in a direction toward the second region of the first terminal.

[0010] According to some embodiments of this application, the width of the fifth region of the fourth terminal and the fifth region of the sixth terminal is greater than the width of the second region of the fifth terminal.

[0011] According to some embodiments of this application, the fifth region of the fourth terminal is widened in a direction toward the fifth region of the sixth terminal; the fifth region of the sixth terminal is widened in a direction toward the fifth region of the fourth terminal.

[0012] According to some embodiments of this application, the second region of the first terminal is laterally bent toward the third terminal; the second region of the third terminal is laterally bent toward the first terminal.

[0013] According to some embodiments of this application, the fifth region of the fourth terminal is laterally bent toward the sixth terminal; the fifth region of the sixth terminal is laterally bent toward the fourth terminal.

[0014] According to some embodiments of this application, the plastic body includes an upper core, a lower core, and a composite core; the upper terminal assembly and the upper core are integrally injection molded structures, the upper core includes an upper core plug portion and an upper core fitting portion, the first region of the upper terminal is disposed on the upper surface of the upper core plug portion, and the second region of the upper terminal is fixedly connected to the upper core fitting portion; the lower terminal assembly and the lower core are integrally injection molded structures, the lower core includes a lower core plug portion and a lower core fitting portion, the fourth region of the lower terminal is disposed on the lower surface of the lower core plug portion, and the fifth region of the lower terminal is fixedly connected to the lower core fitting portion; the lower surface of the upper core plug portion is attached to the upper surface of the lower core plug portion; the composite core, the upper core, and the lower core are integrally injection molded structures, and the composite core is at least partially fixedly connected to the upper core and the lower core to combine the upper core and the lower core into a whole.

[0015] According to some embodiments of this application, both the upper glue core plug portion and the lower glue core plug portion are provided with a first retaining groove, and the first retaining groove is filled with the composite glue core; both the upper glue fitting portion and the lower glue fitting portion are provided with a second retaining groove, and the second retaining groove is filled with the composite glue core. Attached Figure Description

[0016] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is an exploded view of the HDMI female connector in an embodiment. Figure 2 This is a schematic diagram of the structure of the plastic body and terminal module in the embodiment; Figure 3 for Figure 2 Left view in the cross-sectional state; Figure 4 for Figure 2 Left view in another cross-sectional state; Figure 5 This is a schematic diagram of the terminal module in the embodiment; Figure 6 for Figure 5 Left view of the terminal module in the Chinese embodiment; Figure 7 for Figure 5 Top view of the terminal module in the Chinese embodiment; Figure 8 for Figure 5 Rear view of the terminal module in the Chinese embodiment; Figure 9 An exploded view of the HDMI female connector in the embodiment; Figure 10 This is a schematic diagram of the combined structure of the upper terminal assembly and the upper adhesive core in the embodiment; Figure 11 This is a schematic diagram of the combined structure of the terminal assembly and the adhesive core in the embodiment. Figure 12 This is an assembly diagram of the upper terminal assembly, the upper terminal assembly, and the lower adhesive core of the embodiment; Figure 13 A schematic diagram of the structure of an HDMI female connector in the prior art, as an example; Figure 14 for Figure 13 A schematic diagram of the terminal module of the HDMI female connector; Figure 15 for Figure 14 Left view of the middle terminal module; Figure label: Metal housing 100; Plastic body 200; Plug portion 210; First retaining slot 211; Fitting portion 220; Second retaining slot 221; Upper core 230; Upper core plug portion 231; Upper core fitting portion 232; Lower core 240; Lower core plug portion 241; Lower core fitting portion 242; Composite core 250; Terminal module 300; Upper terminal assembly 310; Upper terminal 311; First region 311a; Second region 311b; Third region 311c; Lower terminal assembly 320; Lower terminal 321; Fourth region 311a; Second region 311b; Third region 311c; Lower terminal assembly 320; Lower terminal 321; Fourth region 311a; Third region 311b; Fourth region 311c; Fourth region 311a; Third region 311b ... Third region 311b; Fourth region 311a; Third region 311b; Third region 311b; Fourth region 311a; Third region 311b; Third region 311b; Fourth region 311a; Third region 311b; Third region 311b; Fourth region 311a; Third region 311b; Third region 311b; Third region 311b; Fourth region 311a; Third Region 321a; Region 5 321b; Region 6 321c; Terminal 1 1u; Terminal 3 3u; Terminal 5 5u; Terminal 7 7u; Terminal 9 9u; Terminal 11 1u; Terminal 13 1u; Terminal 15 15u; Terminal 17 17u; Terminal 19 19u; Terminal 2 2d; Terminal 4 4d; Terminal 6 6d; Terminal 8 8d; Terminal 10 10d; Terminal 12 12d; Terminal 14 14d; Terminal 16 16d; Terminal 18 18d. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0018] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0021] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] like Figure 1 and Figure 2 As shown, the HDMI female connector of this embodiment includes a metal housing 100, a plastic body 200 disposed inside the metal housing 100, and a terminal module 300 fixed in the plastic body 200. For example, the metal housing 100 is a hollow structure, typically stamped from metal, used to protect the internal plastic body 200 and terminal module 300 from external physical damage and to provide electromagnetic shielding. The plastic body 200 is made of an insulating material (such as LCP or other engineering plastics) and is used to house and fix the terminal module 300. The plastic body 200 is injection molded and includes a plug portion 210 for insertion with an external HDMI male connector, and a mating portion 220 connected to the plug portion 210 for fixing the terminal and mounting it on a circuit board.

[0023] Terminal module 300 is the core component for realizing electrical connection. Terminal module 300 is housed and fixed within plastic body 20020, and includes an upper terminal assembly 310 and a lower terminal assembly 320. Upper terminal assembly 310 includes a plurality of upper terminals 311. Each upper terminal 311 is made of conductive metal material and integrally formed including a first region 311a, a second region 311b, and a third region 311c connected end-to-end. Figure 3 As shown, the first region 311a is a contact region located on the upper surface of the plug portion 210, used for electrical contact with the corresponding terminal in an externally inserted HDMI male connector. The second region 311b is a transition region that passes through and is fixed within the mating portion 220. The third region 311c is a soldering region that extends from the rear end of the mating portion 220, used for electrical connection with an external circuit board via soldering (e.g., SMT surface mount technology), thereby transmitting signals to the motherboard of the electronic device.

[0024] The structure of the lower terminal assembly 320 corresponds to that of the upper terminal assembly 310. The lower terminal assembly 320 includes a plurality of lower terminals 321. Each lower terminal 321 also includes a fourth region 321a, a fifth region 321b, and a sixth region 321c connected end-to-end in sequence. For example... Figure 4As shown, the fourth region 321a is also a contact region, located on the lower surface of the plug portion 210, for mating with the terminals of an externally inserted male connector. The fifth region 321b is a transition region, passing through and fixed within the mating portion 220. The sixth region 321c is a soldering region, extending from the rear end of the mating portion 220, for electrical connection with an external circuit board.

[0025] A key structural feature of the HDMI female connector in this embodiment is that the second region 311b32 and the fifth region 321b42 are not coplanar. For example, as shown... Figure 5 and Figure 6 As shown, the plane containing the second region 311b of the upper terminal 311 and the plane containing the fifth region 321b of the lower terminal 321 are vertically offset, rather than being vertically aligned as in conventional technologies (e.g., ...). Figure 13 , Figure 14 and Figure 15 (As shown). By staggering the upper and lower rows of terminals within the mating portion 220, the physical distance between adjacent, unpaired signal terminals is increased, effectively reducing electromagnetic interference and crosstalk between them during signal transmission. Secondly, this non-coplanar staggered arrangement provides design freedom for personalized adjustments to terminal width and personalized offsets of terminal positions. For example, specific terminals can be flexibly widened or offset according to the characteristic requirements of different signal pairs to optimize impedance matching and reduce signal delay differences within differential pairs, which is difficult to achieve with traditional coplanar structures.

[0026] Understandably, the HDMI female connector follows the standard pin definition of the HDMI Type-A interface. The upper terminal assembly 310 includes ten upper terminals 311, arranged horizontally from left to right: terminal 1u, terminal 3u, terminal 5u, terminal 7u, terminal 9u, terminal 11u, terminal 13u, terminal 15u, terminal 17u, and terminal 19u. The lower terminal assembly 320 includes nine lower terminals 321, also arranged horizontally from left to right: terminal 2d, terminal 4d, terminal 6d, terminal 8d, terminal 10d, terminal 12d, terminal 14d, terminal 16d, and terminal 18d. These terminals together constitute the 19 standard pins of the HDMI interface, used to transmit different signals.

[0027] Specifically, the first terminal 1u, the second terminal 2d, and the third terminal 3u constitute the differential signal pair of data channel 2 (TMDS Data2) and its shield. The first terminal 1u transmits the positive signal of data channel 2 (TMDS Data2+), the third terminal 3u transmits the negative signal of data channel 2 (TMDS Data2-), and the second terminal 2d serves as the shield for data channel 2 (TMDS Data2). The fourth terminal 4d, the fifth terminal 5u, and the sixth terminal 6d constitute the differential signal pair of data channel 1 (TMDS Data1) and its shield. The fourth terminal 4d transmits the positive signal of data channel 1 (TMDS Data1+), the sixth terminal 6d transmits the negative signal of data channel 1 (TMDS Data1-), and the fifth terminal 5u serves as the shield for data channel 1 (TMDS Data1). Terminals 7u (7th), 8d (8th), and 9u (9th) form the differential signal pair and shield of data channel 0 (TMDS Data0). Terminal 7u transmits the positive signal (TMDS Data0+) of data channel 0, terminal 9u transmits the negative signal (TMDS Data0-) of data channel 0, and terminal 8d serves as the shield of data channel 0 (TMDS Data0). Terminals 10d (10th), 11u (11th), and 12d (12th) form the differential signal pair and shield of clock channel (TMDS). Terminal 10d transmits the positive signal (TMDS Clock+) of clock channel, terminal 12d transmits the negative signal (TMDS Clock-) of clock channel, and terminal 11u serves as the shield of clock channel (TMDS Clock).

[0028] Terminal 13u (13th pin) is the CEC (Consumer Electronics Control) signal terminal, used for control communication between devices. Terminal 14d (14th pin) is reserved or not connected. Terminal 15u (15th pin) is the SCL (Serial Clock Line) signal terminal, used for DDC (Display Data Channel) communication. Terminal 16d (16th pin) is the SDA (Serial Data Line) signal terminal, used for DDC communication. Terminal 17u (17th pin) is the ground terminal. Terminal 18d (18th pin) is the +5V power supply terminal, used to power external devices. Terminal 19u (19th pin) is the hot-plug detection terminal, used to detect the insertion / removal status of the connector.

[0029] Understandably, in order to further improve the signal transmission performance of HDMI connectors at ultra-high speeds, the HDMI female connector of this embodiment has undergone structural optimization specifically for the terminal pairs carrying critical differential signals.

[0030] In some embodiments, the HDMI female connector has a specially designed first terminal 1u and third terminal 3u for transmitting "Data Channel 2" signals. For example, such as... Figure 8As shown, the width of the second region 311b of the first terminal 1u and the width of the second region 311b of the third terminal 3u are both designed to be greater than the width of the fifth region 321b of their corresponding ground shield terminal, i.e., the fifth region 321b of the second terminal 2d. Furthermore, to enhance the coupling within the differential pair of "Data Channel 2" while reducing crosstalk with other signals (such as the fourth terminal 4d of "Data Channel 1"), in some embodiments, the direction of the widened portion is controlled. The second region 311b of the first terminal 1u is widened in its direction toward the third terminal 3u; correspondingly, the second region 311b of the third terminal 3u is widened in its direction toward the first terminal 1u.

[0031] By widening the first terminal 1u and the third terminal 3u closer to each other, the capacitive coupling effect between them is increased. This helps to more precisely control the impedance of the differential pair to the target value (e.g., 100 ohms), thereby reducing signal reflection and ensuring signal integrity. In an ideal differential signal, both positive and negative signals should arrive at the receiving end simultaneously. By fine-tuning the physical structure of the terminals, minute delay differences caused by factors such as wiring path differences can be compensated, ensuring signal synchronization. Secondly, when the third terminal 3u is widened towards the first terminal 1u, its other edge is actually moved away from the adjacent fourth terminal 4d, which belongs to another signal group. This physically increases the spacing between "data channel 2" and "data channel 1," effectively suppressing high-frequency crosstalk between them and ensuring the independence and purity of their respective data channels.

[0032] It is understood that other differential signal pairs in the HDMI female connector of this embodiment can also adopt a similar design concept to achieve similar technical advantages. For example, in another embodiment, such as Figure 8 As shown, the seventh terminal 7u and the ninth terminal 9u used to transmit the "Data Channel 0" signal can also adopt the same structural optimization. Specifically, the width of the second region 311b of the seventh terminal 7u and the second region 311b of the ninth terminal 9u can be designed to be larger than the width of the fifth region 321b of their corresponding ground shield terminal, i.e., the eighth terminal 8d. Furthermore, the second region 311b of the seventh terminal 7u can be widened in the direction towards the ninth terminal 9u, and the second region 311b of the ninth terminal 9u can be widened in the direction towards the seventh terminal 7u. In this way, the internal coupling of the differential signal pair of the seventh terminal 7u and the ninth terminal 9u can also be enhanced, and the interference between them and adjacent signals (such as the sixth terminal 6d or the tenth terminal 10d) can be reduced.

[0033] Corresponding to the optimization approach of the upper terminal assembly 310 described above, the HDMI female connector in this embodiment can also undergo similar structural improvements to the differential signal pairs in the lower terminal assembly 320 to comprehensively improve the signal transmission quality of the connector. In some embodiments, such as Figure 8 As shown, the HDMI female connector in this embodiment features a special design for the fourth terminal 4d and the sixth terminal 6d used to transmit the "Data Channel 1" signal. Specifically, the width of the fifth region 321b of both the fourth terminal 4d and the sixth terminal 6d is designed to be greater than the width of the second region 311b of their corresponding ground shield terminal, i.e., the fifth terminal 5u. Furthermore, in some embodiments, the direction of the widened portion is carefully designed to precisely control the electrical characteristics of the differential pair. The fifth region 321b of the fourth terminal 4d is widened in its direction toward the sixth terminal 6d; correspondingly, the fifth region 321b of the sixth terminal 6d is widened in its direction toward the fourth terminal 4d.

[0034] By bringing the fourth terminal 4d and the sixth terminal 6d closer together in their transmission path (i.e., the fifth region 321b), the coupling effect between the differential signals is enhanced, helping to maintain the differential impedance precisely at the target value, thereby reducing signal reflection and energy loss caused by impedance mismatch. Secondly, as the fourth terminal 4d widens towards the sixth terminal 6d, its other edge moves away from the adjacent third terminal 3u, which belongs to "Data Channel 2". Similarly, widening the sixth terminal 6d also moves it away from the seventh terminal 7u, which belongs to "Data Channel 0". This design physically increases the distance between different data channels, which is an effective means of suppressing inter-channel crosstalk and is crucial for parallel transmission of multiple high-speed signals in a limited space.

[0035] Understandably, other differential signal pairs located in the lower terminal assembly 320 of the HDMI female connector in this embodiment can also adopt this design concept. For example, in another embodiment, the tenth terminal 10d and the twelfth terminal 12d used to transmit the "clock channel" signal can also be optimized. Specifically, the width of the fifth region 321b of the tenth terminal 10d and the fifth region 321b of the twelfth terminal 12d can be designed to be larger than the width of the second region 311b of their corresponding ground shield terminal, i.e., the eleventh terminal 11u. Furthermore, the fifth region 321b of the tenth terminal 10d can be widened in the direction toward the twelfth terminal 12d, and the fifth region 321b of the twelfth terminal 12d can be widened in the direction toward the tenth terminal 10d. In this way, the transmission quality of the clock signal can be significantly improved, providing a more stable and pure synchronous clock reference for all data channels.

[0036] In addition to optimizing differential pair performance by asymmetrically widening the terminals as described above, the HDMI female connector in this embodiment can also adjust the relative positions of the terminals by laterally bending them.

[0037] In some embodiments, the HDMI female connector has structural adjustments to the first terminal 1u and the third terminal 3u for transmitting the "Data Channel 2" signal. For example, as... Figure 7 As shown, in the second region 311b of the mating portion 220, the first terminal 1u is designed to have a lateral bend towards the third terminal 3u; correspondingly, the second region 311b of the third terminal 3u also has a lateral bend towards the first terminal 1u. This "opposite bend" design allows the originally parallel first terminal 1u and third terminal 3u to be more closely aligned in the critical section of their transmission path (i.e., the second region 311b).

[0038] This "opposite bending" design, through physical proximity, directly enhances the capacitive and inductive coupling between the positive and negative signal lines of the differential pair. By carefully designing the bending angle and position, the impedance can be effectively adjusted to the target value, reducing signal reflection. Secondly, when the first terminal 1u and the third terminal 3u are brought close together, they function as a single unit, and their outer edges naturally move away from adjacent terminals transmitting different signals (e.g., the third terminal 3u is away from the fourth terminal 4d). This physical isolation significantly weakens the coupling effect of high-speed signals between different differential pairs, thus significantly reducing inter-pair crosstalk and ensuring the signal purity of each data channel. This is particularly effective in avoiding interference between different types of signals.

[0039] Corresponding to the design concept of the upper terminal assembly 310 described above, the HDMI female connector in this embodiment can also employ a lateral bending scheme in the lower terminal assembly 320 to optimize the performance of the differential signal pair. In some embodiments, such as Figure 7 As shown, the embodiment of the HDMI female connector has structurally adjusted the fourth terminal 4d and the sixth terminal 6d used for transmitting the "Data Channel 1" signal. For example, in the fifth region 321b of its mating portion 220, the fourth terminal 4d is designed to have a lateral bend toward the sixth terminal 6d; correspondingly, the fifth region 321b of the sixth terminal 6d also has a lateral bend toward the fourth terminal 4d.

[0040] This "opposite bending" design allows the fourth terminal 4d and the sixth terminal 6d, which are routed in the lower half of the plastic body 200, to be more closely aligned in their critical transmission paths. The reduced physical distance directly enhances the coupling between the differential signals from the fourth terminal 4d and the sixth terminal 6d. By controlling the bending shape, the impedance of this differential pair can be effectively adjusted to a standard value (e.g., 100 ohms), which is crucial for reducing reflections and losses in high-speed signal transmission. Secondly, when the fourth terminal 4d and the sixth terminal 6d are close together, as a single signal unit, their outer edges naturally move away from adjacent signal terminals. For example, the fourth terminal 4d is away from the third terminal 3u, and the sixth terminal 6d is away from the seventh terminal 7u. This increased physical spacing effectively creates a "barrier" between "Data Channel 1" and "Data Channel 2" and "Data Channel 0," suppressing high-frequency crosstalk between them and ensuring independent and pure signal transmission.

[0041] Understandably, other differential signal pairs located in the lower terminal assembly 320 of the HDMI female connector in this embodiment can also adopt this bending design to improve performance. For example, as Figure 7 As shown, in another embodiment, the tenth terminal 10d and the twelfth terminal 12d used for transmitting the "clock channel" signal can also be configured in a similar structure. Specifically, the fifth region 321b of the tenth terminal 10d can have a lateral bend towards the twelfth terminal 12d, and the fifth region 321b of the twelfth terminal 12d can correspondingly have a lateral bend towards the tenth terminal 10d. In this way, a more stable and interference-resistant clock signal can be provided for the entire connector, which is crucial for the synchronous demodulation of all data channels.

[0042] Considering that the upper terminal 311 and lower terminal 321 in the terminal module 300 of the embodiment adopt a non-coplanar staggered arrangement, and the aforementioned optional widening or bending and other fine structures, the traditional one-time injection molding process is difficult to achieve and is prone to displacement or damage of the terminals during the injection molding process. Therefore, in some embodiments, a step-by-step injection molding method can be used to construct the plastic body 200.

[0043] In some embodiments, such as Figure 9 As shown, the plastic body 200 includes an upper core 230, a lower core 240, and a composite core 250. (As...) Figure 10 As shown, the upper terminal assembly 310 and the upper core 230 are integrally injection molded structures. The upper core 230 includes an upper core plug portion 231 and an upper core fitting portion 232. The first region 311a of the upper terminal 311 is disposed on the upper surface of the upper core plug portion 231, and the second region 311b of the upper terminal 311 is fixedly connected to the upper core fitting portion 232. Figure 11As shown, the lower terminal assembly 320 and the lower core 240 are integrally injection molded structures. The lower core 240 includes a lower core plug portion 241 and a lower core fitting portion 242. The fourth region 321a of the lower terminal 321 is disposed on the lower surface of the lower core plug portion 241, and the fifth region 321b of the lower terminal 321 is fixedly connected to the lower core fitting portion 242. The lower surface of the upper core plug portion 231 is attached to the upper surface of the lower core plug portion 241. The composite core 250 is integrally injection molded with the upper core 230 and the lower core 240. The composite core 250 is at least partially fixedly connected to the upper core 230 and the lower core 240 to combine the upper core 230 and the lower core 240 into a whole.

[0044] For example, in the manufacturing process, the first step is injection molding. The upper terminal assembly 310 is placed in the mold, and through the injection molding process, it is formed into an integral injection-molded structure with the upper core 230. After molding, the upper terminal 311 is precisely fixed to the upper core 230. At this time, the upper core 230 includes an upper core plug portion 231 and an upper core fitting portion 232. Figure 10 The first region 311a of the upper terminal 311 is exposed and located on the upper surface of the upper core plug portion 231, while the second region 311b is securely covered and fixed within the upper core fitting portion 232. Similarly, as Figure 11 As shown, the lower terminal assembly 320 is placed in another mold, and through injection molding, it is formed into an integral injection-molded structure with the lower core 240. After molding, the lower terminal 321 is precisely fixed to the lower core 240. At this time, the lower core 240 includes a lower core plug portion 241 and a lower core fitting portion 242. The fourth region 321a of the lower terminal 321 is exposed and provided on the lower surface of the lower core plug portion 241, while the fifth region 321b is firmly covered and fixed in the lower core fitting portion 242. After completing the above steps, as shown... Figure 12 As shown, the "upper core 230-upper terminal assembly 310" and "lower core 240-lower terminal assembly 320" that have been integrally formed are molded together, so that the lower surface of the upper core plug part 231 and the upper surface of the lower core plug part 241 fit together to form a complete connector plug shape.

[0045] Subsequently, a second injection molding process (or overmolding) is performed. The material of the composite core 250 (usually a high-temperature plastic such as LCP) is injected into a pre-designed mold cavity. The molten material of the composite core 250 fills the reserved space and specific structure between the upper core 230 and the lower core 240, and fuses with them. After cooling and solidification, the composite core 250 is at least partially and firmly connected to the upper core 230 and the lower core 240, thereby combining the originally separate upper and lower parts into a structurally stable and integral plastic body 200.

[0046] In some embodiments, to further enhance the strength and reliability of the bonding between the upper adhesive core 230 and the lower adhesive core 240 via the composite adhesive core 250, the HDMI female connector of the embodiment features a specific retaining structure designed on the adhesive core. For example... Figure 9 , Figure 10 and Figure 11 As shown, in a preferred embodiment, both the upper core plug portion 231 and the lower core plug portion 241 are provided with one or more first retaining slots 211. Simultaneously, both the upper core mating portion 232 and the lower core mating portion 242 are also provided with one or more second retaining slots 221. During the secondary injection molding process, the material of the composite core 250 fills these first retaining slots 211 and second retaining slots 221. After curing, the portion of the composite core 250 filling these slots acts like a "pin" or "rivet," providing strong mechanical interlocking force in multiple dimensions. This ensures that the upper core 230 and the lower core 240 will not separate or misalign when subjected to external forces such as insertion / removal and vibration, greatly improving the structural stability and durability of the entire connector.

[0047] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. An HDMI female connector, characterized in that, include: Metal casing (100); The plastic body (200) is disposed within the metal housing (100) and includes a connected plug portion (210) and a fitting portion (220). Terminal module (300) includes an upper terminal assembly (310) and a lower terminal assembly (320); the upper terminal assembly (310) includes a plurality of upper terminals (311), each upper terminal (311) including a first region (311a), a second region (311b), and a third region (311c) connected end-to-end in sequence. The first region (311a) is located on the upper surface of the plug portion (210) and is used to mate with an external connection terminal. The second region (311b) passes through the fitting portion (220), and the third region (311c)... 311c) is used for electrical connection with an external circuit board; the lower terminal assembly (320) includes a plurality of lower terminals (321), the lower terminals (321) including a fourth region (321a), a fifth region (321b) and a sixth region (321c) connected end to end in sequence, the fourth region (321a) is provided on the lower surface of the plug part (210) for docking with an external connection terminal, the fifth region (321b) passes through the fitting part (220), and the sixth region (321c) is used for electrical connection with an external circuit board; The second region (311b) and the fifth region (321b) are not coplanar.

2. The HDMI female connector according to claim 1, characterized in that, The upper terminal assembly (310) includes a first terminal (1u), a third terminal (3u), a fifth terminal (5u), a seventh terminal (7u), a ninth terminal (9u), an eleventh terminal (11u), a thirteenth terminal (13u), a fifteenth terminal (15u), a seventeenth terminal (17u), and a nineteenth terminal (19u) arranged in a horizontal sequence. The lower terminal assembly (320) includes a second terminal (2d), a fourth terminal (4d), a sixth terminal (6d), an eighth terminal (8d), a tenth terminal (10d), a twelfth terminal (12d), a fourteenth terminal (14d), a sixteenth terminal (16d), and an eighteenth terminal (18d) arranged in a horizontal sequence.

3. The HDMI female connector according to claim 2, characterized in that, The width of the second region (311b) of the first terminal (1u) and the second region (311b) of the third terminal (3u) is greater than the width of the fifth region (321b) of the second terminal (2d).

4. The HDMI female connector according to claim 3, characterized in that, The second region (311b) of the first terminal (1u) is widened in the direction toward the second region (311b) of the third terminal (3u); the second region (311b) of the third terminal (3u) is widened in the direction toward the second region (311b) of the first terminal (1u).

5. The HDMI female connector according to claim 2, characterized in that, The width of the fifth region (321b) of the fourth terminal (4d) and the fifth region (321b) of the sixth terminal (6d) is greater than the width of the second region (311b) of the fifth terminal (5u).

6. The HDMI female connector according to claim 5, characterized in that, The fifth region (321b) of the fourth terminal (4d) is widened in the direction toward the fifth region (321b) of the sixth terminal (6d); the fifth region (321b) of the sixth terminal (6d) is widened in the direction toward the fifth region (321b) of the fourth terminal (4d).

7. The HDMI female connector according to claim 2, characterized in that, The second region (311b) of the first terminal (1u) is laterally bent toward the third terminal (3u); the second region (311b) of the third terminal (3u) is laterally bent toward the first terminal (1u).

8. The HDMI female connector according to claim 2, characterized in that, The fifth region (321b) of the fourth terminal (4d) is laterally bent toward the sixth terminal (6d); the fifth region (321b) of the sixth terminal (6d) is laterally bent toward the fourth terminal (4d).

9. The HDMI female connector according to claim 1, characterized in that, The plastic body (200) includes an upper core (230), a lower core (240), and a composite core (250); the upper terminal assembly (310) and the upper core (230) are integrally injection molded structures. The upper core (230) includes an upper core plug portion (231) and an upper core fitting portion (232). The first region (311a) of the upper terminal (311) is disposed on the upper surface of the upper core plug portion (231), and the second region (311b) of the upper terminal (311) is fixedly connected to the upper core fitting portion (232); the lower terminal assembly (320) and the lower core (240) are integrally injection molded structures. The lower core (240) includes a lower core plug portion (240) and a composite core (250). 1) The lower core fitting part (242) is provided with the fourth region (321a) of the lower terminal (321) on the lower surface of the lower core plug part (241), and the fifth region (321b) of the lower terminal (321) is fixedly connected to the lower core fitting part (242); the lower surface of the upper core plug part (231) is attached to the upper surface of the lower core plug part (241); the composite core (250) is an integral injection molded structure with the upper core (230) and the lower core (240), and the composite core (250) is at least partially fixedly connected with the upper core (230) and the lower core (240) to combine the upper core (230) and the lower core (240) into a whole.

10. The HDMI female connector according to claim 9, characterized in that, Both the upper core plug portion (231) and the lower core plug portion (241) are provided with a first retaining groove (211), and the first retaining groove (211) is filled with the composite adhesive core (250); both the upper core fitting portion (232) and the lower core fitting portion (242) are provided with a second retaining groove (221), and the second retaining groove (221) is filled with the composite adhesive core (250).

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