Flexible-rigid combined board and terminal

Abstract

The invention provides a flexible-rigid combined board and a terminal. The flexible-rigid combined board comprises a flexible substrate, a rigid substrate and a steel sheet, wherein the flexible substrate comprises a first region; the rigid substrate comprises a rigid insulating layer, a line layer and a solder mask layer; the rigid insulating layer is fixed on the flexible substrate and is orthographically projected on the flexible substrate; the projection region overlaps with the first region; the line layer is superposed on the rigid insulating layer; the solder mask layer covers the line layer; at least one grounding through hole is formed in the solder mask layer; a grounding conductor which is electrically connected with the line layer is arranged in the grounding through hole; the steel sheet is fixed on the solder mask layer and is electrically connected with the grounding conductor; and the steel sheet is orthographically projected in the first region of the flexible substrate. The steel sheet can strengthen the assembly strength of the flexible-rigid combined board; and the grounding conductor makes the steel sheet grounded and prevents the steel sheet from receiving static electricity, so that the service lifetime of the flexible-rigid combined board is prolonged.

Description

technical field [0001] The invention relates to the field of electronic equipment, in particular to a rigid-flex board and a terminal. Background technique [0002] At present, the application of rigid-flex boards is becoming more and more extensive. The structure of rigid-flex boards is to set a hard insulating layer on a flexible substrate, then set a circuit layer on the hard insulating layer, and cover the circuit layer with a solder resist ink layer. , so as to realize the rigid circuit board structure of the soft and rigid board. However, in order to reduce the thickness of the rigid-flex board, the rigid insulating layer is usually thinned, so the strength of the hard insulating layer is reduced, resulting in a decrease in the rigid strength of the rigid-flex board, so that the rigid-flex board is faced with high-strength assembly. Under the requirement, it is easy to break and damage. In order to improve the structural strength of the rigid-flex board, the usual me...

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Problems solved by technology

However, in order to reduce the thickness of the rigid-flex board, the rigid insulating layer is usually thinned, so the strength of the hard insulating layer is reduced, resulting in a decrease in the rigidity of the rigid-flex board, so that the rigid-flex board is faced with high-strength assembly. under request, easily broken and damaged

In order to improve the structural strength of the rigid-flex board, the usual practice is to add steel sheets to the rigid-flex board for reinforcement. Since the steel sheet is easy to accept static electricity, it is easy to damage the circuit structure on the rigid-flex board. Therefore, the current rigid-flex board There are problems such as poor strength and easy damage of the bonding plate that affect the service life

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