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Flexible circuit board connecting end and thin film circuit board

A technology of thin film circuit boards and flexible circuit boards, which is applied in the direction of electrical connection of printed components, circuit devices, printed circuits, etc., and can solve problems affecting circuit characteristics and exposure to environmental atmospheres, etc.

Active Publication Date: 2021-09-14
重庆达方电子有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even after the connection tail is inserted into the connector, the connection contacts on the connection tail may still be exposed to the ambient atmosphere, especially the connection contacts near the side of the connection tail, so that these connection contacts may still react with external chemical substances and affect circuit characteristics

Method used

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  • Flexible circuit board connecting end and thin film circuit board
  • Flexible circuit board connecting end and thin film circuit board
  • Flexible circuit board connecting end and thin film circuit board

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Embodiment Construction

[0052] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

[0053] see Figure 1 to Figure 3. The thin film circuit board 1 according to one embodiment, for example but not limited to, can be applied in a keyboard, which includes a layered board structure 12 and a first circuit layer 14 (in the figure 2 Only part of the outline is shown in ) and the second circuit layer 16 (in figure 2 only part of the outline is shown). The layered plate structure 12 comprises a first circuit substrate 122, a second circuit substrate 124 and an insulating layer 126 arranged between the first circuit substrate 122 and the second circuit substrate 124, the first circuit substrate 122, the second circuit substrate 124 and the insulating layer 126. Layers 126 are stacked in vertical direction 12a (indicated by double arrows in the figure). ...

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Abstract

The invention discloses a flexible circuit board connecting end and a thin film circuit board. The flexible circuit board connecting end comprises a carrier plate, a lead layer arranged on the carrier plate, a protective layer and a plate end blocking structure. The protective layer covers the lead layer, but exposes the contact area of the carrier plate and a plurality of contacts of the lead layer on the contact area. The plate end blocking structure is arranged on at least one side edge of the contact area so as to reduce the phenomenon that the circuit characteristics are obviously influenced due to the fact that the contacts react with external chemical substances. The thin film circuit board comprises a layered plate structure and a barrier structure arranged on the inner side of the layered plate structure. The barrier structure can be arranged around the through hole, can be arranged along the ventilation channel, or can be arranged around a structure connected with circuits on different substrates, so that external chemical substances are prevented from entering the layered plate structure and reacting with internal wires to remarkably influence the circuit characteristics of the layered plate structure.

Description

technical field [0001] The invention relates to a connection end of a flexible circuit board and a thin film circuit board, in particular to a connection end of a flexible circuit board and a thin film circuit board which can be used for a keyboard. Background technique [0002] The thin film circuit board of the keyboard has a layered structure. During use, external chemical substances may enter the thin film circuit board through the gaps between the structural layers and react with the circuit to affect the circuit characteristics. For example, the sulfur in the external chemical substances and the wires (such as silver wires) in the thin film circuit board produce sulfides. When the reaction is severe, the signal transmission function of the circuit may be affected, and the thin film circuit board may even fail. In addition, the thin film circuit board usually has connecting tails extending out for connecting with the main board, such as plugging into a flexible printed ...

Claims

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Application Information

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IPC IPC(8): H05K1/02H05K1/11
CPCH01H13/704H01H13/78H01H13/807H01H13/702H01H13/81
Inventor 王庆余蔡温育黄大益
Owner 重庆达方电子有限公司
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