Connector sheet and portable electronic apparatus

Abstract

Provided is a connector sheet exhibiting requisite conduction property for removal of electromagnetic wave noise and static electricity, allowing ground connection between a metal portion of a casing and a circuit board through a simple mounting operation, and capable of meeting requirement for a reduction in electronic apparatus size, and a portable electronic apparatus equipped with the same. The connector sheet is conductively connected to a metal casing and a ground-connecting portion of a circuit board through a conducting portion of a connector portion in which conductive particles are serially oriented. Further, the connector portion and a resin sheet are integrated with each other.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

In the accompanying drawings:

FIG. 1 is an explanatory view of an electronic apparatus equipped with a connector sheet according to a first embodiment;

FIG. 2 is a sectional view taken along the line II-II of FIG. 1;

FIG. 3 is an explanatory view of a sheet portion used in the connector sheet of the first embodiment;

FIG. 4 is an explanatory view of an electronic apparatus equipped with a connector sheet according to a second embodiment;

FIG. 5 is a sectional view taken along the line V-V of FIG. 4;

FIG. 6 is an explanatory view of an electronic apparatus equipped with a connector sheet according to a third embodiment;

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 6;

FIG. 8 is an explanatory view of an electronic apparatus equipped with a connector sheet according to a fourth embodiment;

FIG. 9 is a sectional view taken along the line IX-IX of FIG. 8;

FIG. 10 is an explanatory view of an electronic apparatus equipped with a connector sheet according to a fifth embodiment;

FIG. 11 is a sectional view taken along the line XI-XI of FIG. 10;

FIG. 12 is an explanatory view of an electronic apparatus equipped with a connector sheet according to a sixth embodiment;

FIG. 13 is a sectional view taken along the line XIII-XIII of FIG. 12; and

FIGS. 14A through 14C are enlarged partial views of modifications of a cutout, of which FIG. 14A is an enlarged plan view, FIG. 14B is an enlarged sectional view taken along the line XIV(B)-XIV(B) of FIG. 14A, and FIG. 14C is an enlarged plan view of another modification.

Claims

1. A connector sheet for effecting electrical connection between a metal portion constituting a casing of an electronic apparatus and a ground-connecting portion of a circuit board contained in the casing, the connector sheet comprising: an electrically insulating sheet portion mounted to the circuit board so that the electrically insulating sheet portion covers the circuit board which is opposed to the metal portion; anda connector portion which is integrally provided with a conducting portion which is arranged at a position in the sheet portion, where the metal portion and the ground-connecting portion are opposed to each other, the conducting portion having one end in contact with the metal portion and another end in contact with the ground-connecting portion.

2. A connector sheet according to claim 1, wherein the sheet portion has a plurality of mounting portions for fixing the connector sheet to the circuit board.

3. A connector sheet according to claim 1, wherein the ground-connecting portion of the circuit board is configured to protrude from a board surface, andwherein the connector portion has an engagement recess to be engaged with the ground-connecting portion.

4. A connector sheet according to claim 1, wherein the sheet portion is flexible enough to conform to a change in height of the circuit board according to presence and absence of a circuit element.

5. A connector sheet according to claim 1, wherein the sheet portion has a cutout portion allowing the sheet portion to open in a shearing direction in conformity with a change in height of the circuit board according to presence and absence of a circuit element.

6. A connector sheet according to claim 1, wherein the connector portion is configured to extend through the sheet portion in a thickness direction of the sheet portion and to protrude from both sides thereof.

7. A connector sheet according to claim 1, wherein the connector portion is configured to extend through the sheet portion in a thickness direction of the sheet portion and to protrude from one side thereof.

8. A connector sheet according to claim 1, wherein the sheet portion has at least one mounting portion for fixing the sheet portion to the circuit board and an adhesive portion glued to the circuit board.

9. A connector sheet according to claim 2, wherein the connector portion is positioned between at least two mounting portions.

10. A connector sheet according to claim 8, wherein the ground-connecting portion of the circuit board is configured to protrude from a board surface, andwherein the connector portion has an engagement recess to be engaged with the ground-connecting portion.

11. A connector sheet according to claim 8, wherein the sheet portion is flexible enough to conform to a change in height of the circuit board according to presence and absence of a circuit element.

12. A connector sheet according to claim 8, wherein the sheet portion has a cutout portion allowing the sheet portion to open in a shearing direction in conformity with a change in height of the circuit board according to presence and absence of a circuit element.

13. A connector sheet according to claim 8, wherein the connector portion is configured to extend through the sheet portion in a thickness direction of the sheet portion and to protrude from both sides thereof.

14. A connector sheet according to claim 8, wherein the connector portion is configured to extend through the sheet portion in a thickness direction of the sheet portion and to protrude from one side thereof.

15. A portable electronic apparatus, comprising: a casing having a metal portion; a circuit board containing the casing; and a connector sheet as claimed in claim 1 effecting electrical connection between the metal portion of the casing and a ground-connecting portion of the circuit board.