CN2638245Y - Image sensor module - Google Patents

Abstract

An image sensor module. The utility model provides a sensor module group which reduces the volume, improves the quality and reduces the production cost, and provides the utility model, which comprises a plurality of metal sheets which are symmetrically arranged, a sealing colloid, an image sensing wafer, a plurality of leads, a euphotic layer, a printed circuit board, a lens base and a lens cone; the metal sheet is provided with a first plate, a second plate and a third plate, wherein the first plate and the second plate are different in height, and the third plate is connected with the first plate and the second plate so as to form a groove for arranging the image sensing chip; the sealing colloid covers and fixes a plurality of symmetrical metal sheets to form an upper surface and a lower surface, and the upper surfaces of the first plate and the second plate are exposed from the upper surface of the sealing colloid; a plurality of wires electrically connected to the image sensor chip and the second board; the light-transmitting layer system is arranged on the first plate in a covering manner; the printed circuit board is provided with a through groove with the size slightly larger than that of the light-transmitting layer, is arranged above the first plate and is electrically connected with the first plate; the lens base is arranged on the printed circuit board; the lens cone is screwed in the lens base and forms an accommodating chamber provided with a light hole and an aspheric lens.

Description

Image Sensor Module

technical field

The utility model belongs to a sensor module, in particular to an image sensor module.

Background technique

As shown in FIG. 1 , a conventional image sensor module includes several metal sheets 10 arranged at intervals, a flange layer 16 , an image sensing chip 18 , a printed circuit board 19 , a light-transmitting layer 22 , and a mirror seat 24 And lens barrel 27.

The metal sheet 10 is formed with a first plate 12 and a second plate 14 of different heights.

The flange layer 16 is formed on the periphery and the bottom surface of several metal sheets 10, so that the top of the first plate 12 and the bottom of the second plate 14 of the metal sheet 10 are exposed by the flange layer 16, and the flange layer 16 is connected with several metal sheets 10. The sheet 10 forms an accommodating area 20 for accommodating the image sensing chip 18 .

The active element 21 and the passive element 23 are arranged on the printed circuit board 19 ;

The transparent layer 22 is disposed on the flange layer 16 to cover the image sensing chip 18 so that the image sensing chip 18 can receive light signals through the transparent layer 22 .

The mirror base 24 is disposed on the flange layer 16 , and a through chamber 25 is formed therein, and an internal thread 26 is formed around the chamber 25 .

The lens barrel 27 is arranged in the chamber 25 of the mirror base 24, and it is provided with an external thread 28 corresponding to and screwed on the internal thread 26 of the mirror base 24. The lens barrel 27 is formed with a through accommodation chamber 17, and A light-transmitting hole 29 and an aspheric lens 11 are arranged in the accommodating chamber 17 from top to bottom.

However, although the known image sensor module can achieve its creative effect and purpose, a rather high flange layer 16 must be formed in its overall structure, so that the light-transmitting layer 22 is arranged on it. Only then can the image sensor chip 18 be covered. In this way, it is impossible to meet the requirements of lightness, thinness and shortness; and the junction of the flange layer 16 and the first plate 12 of the metal sheet 10 is at a right angle, which is easy to contain impurities (particles), which not only makes it difficult to clean during the manufacturing process, but also easily affects to the quality of the image sensor module.

Contents of the invention

The purpose of the utility model is to provide an image sensor module with reduced volume, improved quality and reduced production cost.

The utility model comprises several symmetrically arranged metal sheets, sealing colloids, image sensing chips, several wires, a light-transmitting layer, a printed circuit board, a mirror seat and a lens barrel; several mutually symmetrically arranged metal sheets are provided with different The first and second boards with the highest height and the third board connecting the first and second boards make several mutually arranged metal sheets form grooves in the central part; The lower surface of the first and second plates of several metal sheets is exposed from the upper surface of the sealant; the image sensor chip is arranged in the groove formed by several metal sheets; several wires are electrically connected to the image sensor The second board of the test chip and the metal sheet; the light-transmitting layer is covered on the first board of several metal sheets; the printed circuit board is provided with a hollow groove slightly larger than the light-transmitting layer, which is located on the metal sheet above the first plate, and electrically connected with each first plate, so that the image sensor chip can receive light signals through the light-transmitting layer and the hollow groove; The thread is arranged on the printed circuit board; the lens barrel is arranged in the accommodation room of the mirror base, and it is provided with an external thread corresponding to and screwed on the inner thread of the mirror base, and a through accommodation chamber is formed in the lens barrel. In addition, a light-transmitting hole and an aspherical lens are arranged in the accommodation chamber from top to bottom.

in:

A middle plate for setting an image sensing chip is arranged in a groove formed by several metal sheets arranged mutually.

The sealing system uses industrial plastic material injection molding to cover and fix several mutually symmetrical metal sheets.

Since the utility model includes several symmetrically arranged metal sheets, sealing colloids, image sensing chips, several wires, light-transmitting layers, printed circuit boards, mirror holders and lens barrels; the metal sheets are provided with first, The second board and the third board connecting the first and second boards make several metal sheets form grooves; the sealant wraps and fixes several mutually symmetrical metal sheets to form the upper and lower surfaces, and makes the first of several metal sheets The upper surface of the second board is exposed by the upper surface of the sealant; the image sensing chip is arranged in the groove; several wires are electrically connected to the second board of the image sensing chip and the metal sheet; the light-transmitting layer is covered on the On the first board; the printed circuit board is provided with a transparent groove slightly larger than the light-transmitting layer, which is arranged above the first board and electrically connected with the first board; the mirror base is arranged on the printed circuit board; the lens barrel is screwed on An accommodating chamber for setting the light-transmitting hole and the aspheric lens is formed in the mirror seat. Since the metal sheet forms a groove for setting the image sensing chip, the image sensing chip can be placed in the groove, and the light-transmitting layer is arranged on the first plate of the metal sheet, so there is no need to form a protrusion on the encapsulant. Insulation layer can reduce the height of the overall package, so as to achieve the purpose of lightness and shortness; the third board connecting the first and second boards of the metal sheet is inclined, which can reduce the residue of impurities and facilitate removal, improving its process quality. Not only the volume is reduced, but also the quality is improved and the production cost is reduced, so as to achieve the purpose of the utility model.

Description of drawings

FIG. 1 is a schematic cross-sectional view of a conventional image sensor module structure.

Fig. 2 is a schematic sectional view of the exploded structure of the utility model.

Fig. 3 is a schematic cross-sectional view of the structure of the utility model.

Detailed ways

As shown in Figure 2 and Figure 3, the utility model includes several mutually symmetrically arranged metal sheets 30, a sealant 31, an image sensing chip 33, several wires 35, a light-transmitting layer 37, a printed circuit board 39, and a mirror seat 41 and lens barrel 43.

Several mutually symmetrically arranged metal sheets 30 (Leadfram) are provided with a first plate 32, a second plate 34 of different heights and a third plate 36 connecting the first and second plates 32, 34, so that several mutually arranged metal sheets 30 forms a groove 38 in the central portion of which the middle plate 40 is disposed.

The encapsulant 31 is an industrial plastic material, which covers and fixes several mutually symmetrical metal sheets 30 by injection molding to form an upper surface 42 and a lower surface 44, and makes the first and second plates 32, 32, 34 is exposed by the upper surface 42 of the encapsulant 31 .

The image sensor chip 33 is disposed in the groove 38 formed by the metal sheets 30 and located above the middle plate 40 .

Several wires 35 are electrically connected to the image sensing chip 33 and the second board 34 of the metal sheet 30 .

The transparent layer 37 is covered on the first plate 32 of the plurality of metal sheets 30 , so that the image sensing chip 33 can receive light signals through the transparent layer 37 .

The printed circuit board 39 is provided with a hollow groove 45 slightly larger in size than the transparent layer 37 . The printed circuit board 39 is disposed above the first board 32 of the metal sheet 30 and is electrically connected to each first board 32 , so that the image sensor chip 33 can receive light signals through the transparent layer 37 and the hollow slot 45 .

The mirror base 41 is formed with a through chamber 46 , and an internal thread 48 is formed around the chamber 46 , which is arranged on the printed circuit board 39 .

The lens barrel 43 is arranged in the chamber 46 of the mirror base 41, and it is provided with an external thread 50 corresponding to and screwed on the internal thread 48 of the mirror base 41. A through accommodation chamber 52 is formed in the lens barrel 43. A light transmission hole 54 and an aspheric lens 56 are arranged in the accommodating chamber 52 from top to bottom.

As mentioned above, the utility model has the following advantages:

1. Since the metal sheet 30 forms a groove 38 for setting the image sensing chip 33, the image sensing chip 33 can be arranged in the groove 38, and the light-transmitting layer 37 can be arranged on the first plate 32 of the metal sheet 30 Therefore, the height of the overall package can be reduced because there is no need to form a flange layer on the sealing body 31, so as to achieve the purpose of lightness, thinness and compactness.

2. The third plate 36 connecting the first and second plates 32 and 34 of the metal sheet 30 is inclined, which can reduce the residue of impurities and facilitate removal, so as to improve the process quality.

Claims (3)

1. An image sensor module, which includes several symmetrically arranged metal sheets, a sealing body, an image sensing chip, several wires, a light-transmitting layer, a printed circuit board, a lens holder, and a lens barrel; each The metal sheet is provided with first and second plates of different heights; the sealing body wraps and fixes several mutually symmetrical metal sheets to form the upper and lower surfaces, and the upper surface of the first plate of the metal sheet is exposed from the upper surface of the sealing body; Several wires are electrically connected to the image sensing chip; the mirror base is formed with a through chamber, and an internal thread is formed around the chamber, which is arranged on the printed circuit board; the lens barrel is arranged in the chamber of the mirror holder, and There are external threads corresponding to and screw-locked on the internal threads of the mirror base, and a through accommodating chamber is formed in the lens barrel, and light-transmitting holes and aspheric lenses are arranged in the accommodating chamber from top to bottom; it is characterized in that The metal sheet is provided with a third plate connecting the first and second plates, so that several metal sheets arranged with each other form a groove for setting the image sensor chip in the central part; the upper surface of the second metal sheet is formed by the upper surface The surface is exposed and electrically connected to several wires that are electrically connected to the image sensor chip; the light-transmitting layer is covered on the first plate of several metal sheets; the printed circuit board is provided with a hole slightly larger than the light-transmitting layer groove; the printed circuit board is arranged above the first plate of the metal sheet, and is electrically connected with each first plate, so that the image sensing chip can receive light signals through the light-transmitting layer and the hollow groove. 2 . The image sensor module according to claim 1 , wherein a middle plate for setting the image sensor chip is arranged in a groove formed in the central portion of the plurality of mutually arranged metal sheets. 3. The image sensor module according to claim 1, wherein the sealing system is formed by injection molding of industrial plastic materials to cover and fix several mutually symmetrical metal sheets.

Images