Image sensor package

An image sensor module includes a substrate, frame layer, a photosensitive chip, a lens holder, and a lens barrel. The substrate has an upper surface, and a lower surface on which second electrodes are formed. The frame layer is arranged on the upper surface of the substrate, a cavity formed between the frame layer and substrate. The photosensitive chip is mounted on the upper surface of the substrate and located within the cavity. The lens holder has an upper end face, a lower upper face, and an opening penetrating through the lens holder from the upper end face to the lower end face, the upper end of the opening is formed with an internal thread and the lower end of the opening is formed with a breach, so that the internal diameter of the upper end of the opening is smaller than the lower end of the opening, the lens holder is adhered on the upper surface of the substrate by glue, therefore, the frame layer is located within the breach of the lens holder. The lens barrel has an upper end face, a lower end face, and an external thread is screwed to the internal thread of the lens holder.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to an image sensor module, and in particular to an image sensor module is capable of manufacturing to be light, thin, and small.

2. Description of the Related Art

Referring toFIG. 1, it is a conventional image sensor module includes a substrate10, photosensitive chip20, a lens holder24, and a lens barrel32. The substrate10has an upper surface12on which first electrodes16are formed, and a lower surface14on which second electrodes18are formed. The photosensitive chip20is mounted on the upper surface12of the substrate10, and is electrically connected to the first electrodes16of the substrate11. The lens holder24has an upper end face26, a lower upper face28, and an opening penetrating through the lens holder24from the upper end face26to the lower end face28. The upper end of the opening is formed with an internal thread30, the lens holder24is adhered on the upper surface12of the substrate10by glue, therefore, the photosensitive chip20is located within the opening of the lens holder24. The lens barrel32has an upper end face34, a lower end face36, and an external thread38screwed to the internal thread30of the lens holder24.

Accordingly, when the photosensitive chip20has a large scale, it is inconvenient, or even impossible, in the manufacturing processes for bonding and electrically connecting wires to the first electrodes16of the substrate10. Therefore, the size of the substrate10has to be enlarge so as to increase the space for wire bonding.

SUMMARY OF THE INVENTION

An objective of the invention is to provide an image sensor module, that is ease to be package and capable of reducing the volume of the module and the manufacturing cost.

Another objective of the invention is to provide an image sensor module capable of packaging image sensor chip having different sizes without changing the package volume. The objective of the producing packages having the same volume can be achieved.

To achieve the above-mentioned object, the invention provides a substrate, a frame layer, a photosensitive chip, a lens holder, and a lens barrel. The substrate has an upper surface and a lower surface. The frame layer is arranged on the upper surface of the substrate, a cavity formed between the frame layer and substrate. The photosensitive chip is mounted on the upper surface of the substrate and located within the cavity. The lens holder has an upper end face, a lower upper face, and an opening penetrating through the lens holder from the upper end face to the lower end face, the upper end of the opening is formed with an internal thread and the lower end of the opening is formed with a breach, so that the internal diameter of the upper end of the opening is smaller than the lower end of the opening, the lens holder is adhered on the upper surface of the substrate by glue, therefore, the frame layer is located within the breach of the lens holder. The lens barrel has an upper end face, a lower end face, and an external thread is screwed to the internal thread of the lens holder.

DETAILED DESCRIPTION OF THE INVENTION

Please refer toFIG. 2is an image sensor module of the present invention includes a substrate50, a frame layer59, a photosensitive chip52, a lens holder54, and a lens barrel56.

Please refer toFIG. 3. The substrate50has an upper surface58and a lower surface60on which a plurality of second electrodes64are formed.

The frame layer59is arranged on the upper surface58of the substrate50, a cavity61is formed between the frame layer59and substrate50, a plurality of first electrodes62are formed on the frame layer59.

The photosensitive chip52is mounted on the upper surface58of the substrate50, and is located within the cavity61, then, the photosensitive chip52is electrically connected to the first electrodes62of the frame layer59by wires66.

The lens holder54has an upper end face68, a lower end face70, and an opening71penetrating through the lens holder54. The upper end of the opening71is formed with an internal thread72, and the lower end of the opening71is formed with a breach 74. So that the internal diameter of the upper end of the opening71is smaller than the lower end of the opening71, in the embodiment, the breach 74 of the opening71is a triangular form. The lens holder54is adhered on the upper surface58of the substrate50by glue76. Therefore, the frame layer59is located within the beach74of the lens holder54.

The lens barrel56has an upper end face80, a lower end face82, and an external thread84screwed to the internal thread72of the lens holder54.

Therefore, it is possible to select the substrate50having a smaller size to package the photosensitive chip52having the same original size. Thus, it is possible to obtain an image sensor module having smaller volume and to decrease the material costs for the substrate50.

While the invention has been described by way of an example and in terms of a preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications. Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications.