Inspection device and producing method of wired circuit board
AssigneeNitto Denko Corporation
InventorYoshihiro Toyoda
Life of this patent
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Abstract
An inspection device includes a light emitting unit emitting incident light that enters the insulating cover layer and a light receiving unit receiving reflected light that is reflected from the incident light on the surface of the insulating cover layer. The light emitting unit includes a first light emitting portion in a ring state that emits the incident light so that the angle thereof with respect to the surface of the insulating base layer is in the range of 25° or less and a second light emitting portion in a ring state that emits the incident light so that the angle thereof with respect to the surface of the insulating base layer is in the range of 35 to 65°.
Claims6
An inspection device,
- for inspecting the presence or absence of a foreign object in an insulating cover layer in a wired circuit board provided with an insulating base layer, a conductive pattern formed on the insulating base layer and the insulating cover layer formed on the insulating base layer so as to cover the conductive pattern,
- includes a light emitting unit emitting incident light that enters the insulating cover layer and
- a light receiving unit receiving reflected light that is reflected from the incident light on the surface of the insulating cover layer, wherein
- the light emitting unit includes
- a first light emitting portion in a ring state that emits the incident light so that the angle thereof with respect to the surface of the insulating base layer is in the range of 25° or less and
- a second light emitting portion in a ring state that emits the incident light so that the angle thereof with respect to the surface of the insulating base layer is in the range of 35 to 65°.
A method for producing a wired circuit board comprising the steps of:
- forming an insulating base layer;
- forming a conductive pattern on the insulating base layer;
- forming an insulating cover layer on the insulating base layer so as to cover the conductive pattern;
- and
- inspecting the presence or absence of a foreign object in the insulating cover layer by using an inspection device;
- wherein
- the inspection device includes
- a light emitting unit emitting incident light that enters the insulating cover layer and
- a light receiving unit receiving reflected light that is reflected from the incident light on the surface of the insulating cover layer, wherein
- the light emitting unit includes
- a first light emitting portion in a ring state that emits the incident light so that the angle thereof with respect to the surface of the insulating base layer is in the range of 25° or less and
- a second light emitting portion in a ring state that emits the incident light so that the angle thereof with respect to the surface of the insulating base layer is in the range of 35 to 65°.
Dependencies are inferred from the claim text.