Mobile terminal, universal serial bus interface and manufacturing method therefor
A universal serial bus, mobile terminal technology, applied in the electronic field, can solve the problems of reducing production costs, increasing signal interference, disadvantages, etc.
Active Publication Date: 2016-07-20
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology
[0003] However, since the test switch tube usually has a relatively large volume, and after the USB interface test is passed, the function of the test switch tube in the USB interface is only to conduct the signal line of the USB interface.
Therefore, if the test switch tube is still retained in the USB interface after the test is passed, it will undoubtedly increase the volume of the USB interface and the PCB wiring area of the USB interface, which is not conducive to reducing production costs; If the tube remains in the USB interface, it will also increase the PCB wiring density in the USB interface, increase signal interference, and reduce signal stability
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0034] For ease of description, spatially relative terms such as "under", "beneath", "below", "above", "on" and other spatially relative terms may be used herein to describe an element as shown in the drawings Or the relationship of a feature to another element or feature(s). It will be understood that when an element or layer is referred to as being "on," "connected to," or "coupled to" another element or layer, it can be directly on, directly on, or directly...
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Disclosed is a manufacturing method for a USB (universal serial bus) interface. The manufacturing method comprises the steps of forming a first trench in a first signal transmission line of the USB interface, wherein the first signal transmission line is divided into a first connection section and a second connection section through the first trench; forming a second trench in a second signal transmission line of the USB interface, wherein the second signal transmission line is divided into a third connection section and a fourth connection section through the second trench; setting USB test switch tubes on the first signal transmission line and the second signal transmission line; performing signal transmission test on the USB interface through the USB test switch tubes; when the USB interface passes the signal transmission test, removing the USB test switch tubes; and connecting the first connection section and the second connection section through a first resistor, and connecting the third connection section and the fourth connection section through a second resistor. In addition, the invention also provides the USB interface and a mobile terminal, wherein the USB interface has a relatively small volume.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to a mobile terminal, a universal serial bus interface and a manufacturing method thereof. Background technique [0002] As one of the commonly used peripheral interfaces, a universal serial bus (Universal Serial Bus, USB) interface is an important component of electronic products such as mobile phones and tablet computers. In the production process of electronic products with USB interfaces, it is usually necessary to test the assembled USB interfaces to ensure normal communication of the USB interfaces. At present, the commonly used method is to add a dedicated USB test switch on the signal line of the USB interface, and control the test switch to be turned on or off through the control circuit, so as to test the USB interface. After the test of the USB interface is passed, the control circuit controls the test switch to conduct, so as to ensure the normal operation of the US...
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IPC IPC(8): H01R43/00H01R43/16H01R13/66H01R13/70H01R13/02G01R31/00
CPCG01R31/00H01R13/02H01R13/6616H01R13/70H01R43/00H01R43/16H01R2201/20
Inventor 曾元清
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD