JP3140968U - Optical mouse module packaging - Google Patents

Abstract

An optical mouse module packaging that simplifies the processing steps of the optical mouse module and shortens the processing time.
A substrate 20, a radiation unit 30, a light-sensitive chip 40, and a packaging layer 50 are provided. The radiation unit 30 is disposed on the substrate 20 and has a radiation zone 32, which can emit a beam. The light-sensing chip 40 is disposed on the substrate 20 and has a light-receiving zone 42 that can receive a beam that is refracted and bounces back. The packaging layer 50 covers the substrate 20 by a casting method, and has two perforations 52 corresponding to the radiation zone 32 and the light receiving zone 42 in the radiation unit 30 and the light-sensitive chip 40, respectively. Can be passed.
[Selection] Figure 2

Description

  The present invention relates to packaging of optical mice, particularly optical mouse modules.

  In a conventional optical mouse, a technique for shortening the processing time by facilitating assembly, for example, “Packaging of an edge emitting laser and a sensor integrated for use in an optical mouse” described in Patent Document 1 is arranged on a substrate and a substrate. A packaging body having a light-transmitting cap is provided, and the substrate and the cap form an accommodation space. The laser light emitting chip disposed on the substrate is positioned in the accommodation space and generates a beam that passes through the cap. The image sensing chip disposed on the packaging body is located in the accommodation space and receives the reflected beam. That is, in the conventional optical mouse, it is possible to achieve the object of assembling convenience by modularizing components necessary for the optical mouse.

However, since the manufacturing process of the substrate and the cap is relatively complicated, it is necessary to perform processing many times in order to manufacture a necessary shape. In other words, the time for assembling the optical mouse can be shortened, but the processing time for manufacturing the substrate and the cap is increased. Further, in the entire process of manufacturing the optical mouse, it is impossible to reliably reduce the processing time for manufacturing the optical mouse, and there is a drawback that it takes time to manufacture the optical mouse module.
As described above, the conventional optical mouse module has room for improvement because it has the above-described drawbacks.
Taiwan Utility Model Notice No. M288726 Specification

  The main object of the present invention is to provide optical mouse module packaging that simplifies the processing steps of the optical mouse module and shortens the processing time of the optical mouse module.

To achieve the above object, the packaging of the optical mouse module according to the present invention comprises a substrate, a radiation unit, a light sensitive chip and a packaging layer. The radiation unit is disposed on the substrate and has a radiation zone, which can emit a beam. The light-sensitive chip is disposed on the substrate and has a light receiving zone, and the light receiving zone can receive a beam that is refracted and bounces back. The packaging layer covers the substrate by molding and has two perforations in the radiation unit and the light sensitive chip, corresponding to the radiation zone and the light reception zone, respectively, which can pass the beam. Is possible.
As described above, the packaging of the optical mouse module according to the present invention can simplify the manufacturing process of the optical mouse module by the mold method, and therefore shortens the processing time of the optical mouse module compared with the conventional one. It is possible.

(One embodiment)
Hereinafter, in order to explain the structure, features, and effects of the present invention, an embodiment of the present invention will be described with reference to the drawings. First, the description of the drawings is as follows.
FIG. 1 is a plan view showing packaging of an optical mouse module according to an embodiment of the present invention.
2 is a sectional view taken along line 2-2 of FIG.

1 and 2, an optical mouse module packaging 10 according to an embodiment of the present invention includes a substrate 20, a radiation unit 30, a light sensing chip 40, a packaging layer 50, and two optical glasses 60.
Since the substrate 20 is a conventional lead frame, a detailed description is omitted.
The radiating unit 30 is a light emitting diode, and the radiating unit 30 is disposed on the substrate 20 and has a radiating section 32. The radiating section 32 can emit a beam. The beam is projected onto a reflective surface (not shown in the figure) such as a desktop, and then refracted toward the light sensing chip 40.

The light-sensing chip 40 is disposed on the substrate 20 and has a light-receiving area 42. The light-receiving area 42 can receive a beam that is refracted and bounces, so that the amount of movement of the optical mouse is determined by the received beam. It becomes possible.
The packaging layer 50 covers the substrate 20 by a mold method, and in the radiation unit 30 and the light sensing chip 40, two perforations 52 corresponding respectively to the radiation zone 32 of the radiation unit 30 and the light receiving zone 42 of the light sensing unit 40. And the perforations 52 are gradually expanded outwardly from the substrate 20 to pass the beam. The packaging layer 50 is made of any one of epoxy resin, silicon resin, silicon-filled epoxy resin, polyester resin and the like. In this embodiment, the packaging layer 50 uses an epoxy resin as an example.

Two examples of at least one optical glass 60 are used in this embodiment. The two optical glasses 60 are separately disposed on the packaging layer 50 to shield the perforations 52 to transmit the beam. The optical glass 60 has a polarization effect that makes it possible to give a specific optical effect by changing the properties of the beam.
Due to the above-described structure, the present embodiment forms the packaging layer 50 directly with the packaging material and completes the packaging operation. Therefore, the machining process is simpler than the conventional one, and the machining time is shortened. Can do. In other words, in this embodiment, it is not necessary to prepare a special substrate and a cap in advance to form a packaging body, so that the processing time of the optical mouse module can be reliably shortened.
The unit presented by the embodiment of the present invention is only an example for explanation, and does not limit the claim of the present invention. Therefore, the change that replaces the unit with the same effect is included in the claim of the present invention. Should belong.

1 is a plan view showing packaging of an optical mouse module according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line 2-2 of FIG.

Explanation of symbols

  10: Packaging, 20: Substrate, 30: Radiation unit, 32: Radiation zone, 40: Photosensitive chip, 42: Photosensitive zone, 50: Packaging layer, 52: Perforation, 60: Optical glass

Claims (5)

A substrate,
A radiation unit disposed on the substrate and having a radiation zone, the radiation zone being capable of emitting a beam;
A light-sensitive chip disposed on the substrate and having a light-receiving zone, the light-receiving zone being capable of receiving a beam that is refracted and bounces;
The substrate is coated by a mold method, and the radiation unit and the light-sensitive chip have two perforations corresponding respectively to the radiation zone and the light-receiving zone, and the perforation can pass the beam. A packaging layer,
An optical mouse module packaging comprising:   2. The optical mouse module packaging according to claim 1, wherein the perforations are gradually expanded from the substrate side toward the outside.   2. The optical mouse module packaging according to claim 1, wherein the packaging layer is formed of any one of an epoxy resin, a silicon resin, a silicon-filled epoxy resin, and a polyester resin.   The packaging of an optical mouse module according to claim 1, further comprising at least one optical glass disposed on the packaging layer so as to shield one of the perforations for transmitting a beam. .   5. The optical mouse module packaging according to claim 4, wherein the optical glass has a polarization effect.

Images