WO2015149369A1 - Printed circuit board - Google Patents

Abstract

A printed circuit board. An attachment plate used can bury a thin film resistor in a slot body of a substrate, thereby implementing application of a part of the thin film resistor obtained when an entire board is cut in the whole board. An entire thin film resistor material does not need to be buried in the printed circuit board, thereby saving the thin film resistor material. In addition, by arranging an electric connection structure, electric connection of the thin film resistor on the attachment plate is achieved.

Description

 Printed circuit board

 [0001] The present application relates to the field of circuits, and in particular, to a printed circuit board.

Background technique

[0002] A printed wiring board is a support of an electronic component. Today's electronic products continue to develop in a light, thin, and small direction, making the application of small-sized thin film resistors more and more widespread.

 [0003] Since the entire thin film resistive material is generally buried in the circuit board, a part of the thin film resistive material cannot be buried separately, and only a portion of the thin film resistive material is used in the application, resulting in waste of the thin film resistive material.

Summary of the invention

The present application aims to solve at least one of the above technical problems at least to some extent.

 [0005] The present application provides a printed circuit board, including: a substrate and an attachment plate, the substrate is provided with a groove body, the surface of the groove body is covered with a first conductive layer, and the second plate is disposed on the adhesion plate a layer and a thin film resistor mounted on the attaching plate, the electrode of the thin film resistor is electrically connected to the second conductive layer, and the first metal screw hole electrically connected to the first conductive layer is opened on the substrate, The attachment plate is provided with a second metal screw hole electrically connected to the second conductive layer, and the first metal screw hole is fixed to the second metal screw hole by a metal screw.

 [0006] Further, the number of the first metal screw holes, the second metal screw holes and the metal screws are matched with the number of electrodes of the thin film resistor.

 [0007] Further, the first metal screw hole, the second metal screw hole and the metal screw are made of copper.

[0008] The beneficial effects of the application are:

By providing a printed circuit board, the film resistor can be embedded in the groove of the substrate by using the adhesive plate, so that the partial film resistance obtained by cutting in the whole plate can be applied to the printed circuit board without the need to embed the entire film resistor material. The printed circuit board saves the thin film resistor material, and the electrical connection of the thin film resistors on the attached board is realized by the electrical connection structure.

DRAWINGS

 1 is a schematic structural view of a printed circuit board in front of a metal screw according to an embodiment of the present application.

2 is a schematic structural view of a printed circuit board assembled with metal screws according to an embodiment of the present application.

detailed description

The embodiments of the present application are described in detail below, and the examples of the embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative, and are not to be construed as limiting. [0012] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "previous"",""back","left","right","vertical","horizontal","top","bottom","inside","outside","clockwise","counterclockwise", etc. Orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present application and simplified description, and does not indicate or imply that the device or component referred to has a specific orientation, is constructed in a specific orientation, and Operation is therefore not to be construed as limiting the application.

 In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first", "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "plurality" is two or more, unless specifically defined otherwise.

[0014] In the present application, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be, for example, a fixed connection or a Removable connection, or integral connection; can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal communication between the two components. For those skilled in the art, the specific meanings of the above terms in the present application can be understood on a case-by-case basis.

[0015] In the present application, the first feature is "on" or "on" the second feature, unless otherwise explicitly stated and defined.

"Bottom" may include direct contact of the first and second features, and may also include that the first and second features are not in direct contact but are contacted by additional features therebetween. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is less than the second feature.

 [0016] The present application will be further described in detail below with reference to the accompanying drawings.

 [0017] Please refer to FIG. 1-2, the embodiment provides a printed circuit board, including: a substrate 1 and an attachment plate 2, wherein the substrate 1 is provided with a groove body 11, and the surface of the groove body 11 is covered with a first conductive layer. 12, the second conductive layer 21 and the thin film resistor 3 mounted on the adhesive plate 2 are disposed on the attachment plate 2, and the electrode of the thin film resistor 3 is electrically connected to the second conductive layer 21, and the substrate 1 is opened and first The first metal screw hole 121 is electrically connected to the conductive layer 12, and the second metal screw hole 211 is electrically connected to the second conductive layer 21, and the first metal screw hole 121 passes through the metal screw 4 and the second metal screw. The hole 211 is fixed. The number of the first metal screw holes 121, the second metal screw holes 211, and the metal screws 4 is matched with the number of electrodes of the thin film resistor 3. The first metal screw hole 121, the second metal screw hole 211, and the metal screw 4 are made of copper.

[0018] In this way, the film resistor can be embedded in the cavity of the substrate by using the adhesive plate, so that the partial film resistance obtained by cutting in the whole plate can be applied to the printed circuit board without the entire film resistor material being buried in the printed circuit board. , saving thin film electricity The resistive material is additionally provided by an electrical connection structure to realize electrical connection of the thin film resistors on the attached board.

[0019] In the description of the present specification, the terms "one embodiment", "some embodiments", "one embodiment", "some embodiments", "example", "specific examples", or "some examples" are referred to. The descriptions of the equivalents, such as the specific features, structures, materials or features described in connection with the embodiments or examples, are included in at least one embodiment or example of the present application. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0020] The above is a further detailed description of the present application in conjunction with the specific embodiments, and the specific implementation of the application is not limited to the description. For those skilled in the art to which the present invention pertains, a number of simple deductions or substitutions may be made without departing from the spirit of the present application.

Claims

WO 2015/149369 Power and j request PCT/CN2014/074844 A printed circuit board, comprising: a substrate and an attachment plate, wherein the substrate is provided with a groove body, the surface of the groove body is covered with a first conductive layer, and the adhesion plate is provided with a second conductive a layer and a thin film resistor mounted on the attaching plate, the electrode of the thin film resistor is electrically connected to the second conductive layer, and the first metal screw hole electrically connected to the first conductive layer is opened on the substrate, The attachment plate is provided with a second metal screw hole electrically connected to the second conductive layer, and the first metal screw hole is fixed to the second metal screw hole by a metal screw.  2. The printed wiring board according to claim 1, wherein the number of the first metal screw holes, the second metal screw holes, and the metal screws is matched with the number of electrodes of the thin film resistor.  3. The printed wiring board according to claim 1, wherein the first metal screw hole, the second metal screw hole and the metal screw are made of copper.