CN2612180Y - electronic camera module - Google Patents

Abstract

The utility model discloses an electronic camera module, which comprises a flexible printed circuit board with an assembly part and a wire arranging part, wherein the wire arranging part is formed by extending the assembly part integrally, and both sides of the wire arranging part are coated with metal layers to prevent the electronic electromagnetic interference between signals; an image sensor disposed on one side of the assembly portion of the flexible printed circuit board; a lens mounted above the image sensor and aligned with the image sensor; an image processing chip is arranged on the other side of the assembling part of the flexible printed circuit board, so that the volume of the module is effectively reduced; a connector arranged at the end of the flexible printed circuit board, the connector is used for connecting with the printed circuit board of the electronic equipment to be applied, and the flexibility of design and use is increased; a serial flash memory, which is installed on the assembly portion of the printed circuit board and connected with the image sensor, and can record the dead pixel and the color deviation of the image sensor, so as to provide accurate image for the electronic device to correct and compensate.

Description

electronic camera module

Technical field

The utility model relates to an electronic camera module, in particular to an electronic camera module which can be applied to electronic equipment such as a digital camera and a camera phone, and is short, thin, easy to assemble and flexible in application.

Background technique

The application range of electronic camera module is more and more extensive, from being combined in personal computer, to digital camera, and can be applied to watch or mobile phone to add camera function. Figures 5 and 6 show traditional digital electronic camera modules. In order to achieve the purpose of being short and thin, the general image processing circuit has been implemented by using an image processing chip to reduce the size of the module. Therefore, the electronic camera module 200 shown in Fig. 5 and Fig. 6 mainly includes a lens 201, and a lens 201 for receiving the lens An image sensor (ImageSensor) 202 of the captured image, and an image processing chip 203 to process the image displayed by the image sensor 202, and finally the electronic camera module 200 is connected to the printed circuit board (Printed Circuit Board) 204 of the applied electronic equipment, Such as a digital camera to perform functions such as image editing and storage. From the perspective of the structure of the traditional electronic camera module, firstly, the electronic camera module 200 has an image sensor 202 and an image processing chip 203, and the two are packaged together. High, and the multi-chip assembly (Multi-Chip Package, MCP) is combined and the packaging technology is more complicated, and the technical requirements are very high, resulting in a very low manufacturing yield, which naturally increases the cost.

When the electronic camera module is manufactured and assembled to the printed circuit board of the electronic device, the pins of the electronic camera module are placed in the reserved sockets of the printed circuit board, and then soldered. In terms of application, if the jack is a through hole, automatic surface mounting technology (Surface Mounting Technology, SMT) is used. However, since the jack and pins designed by the chip are very fine, the probability of defective products is lower than Generally, the manufacturing cost is high, and defective products cause the entire module to be scrapped, and the loss is very large; more seriously, if the printed circuit board is a multilayer board, the jack is a non-through hole, and the Ball Grid Array (BGA) is used to ) technology welding, because this processing technology does not have through-holes and uses heat sources such as infrared rays to melt the solder, so the yield rate will be worse, and defective products cannot be detected visually. On the whole, due to poor design, it does not conform to industrial production efficiency.

Utility model content

In order to improve the problems of difficult manufacturing and low yield in industrial production of the above-mentioned prior art, which eventually lead to a lot of waste and high cost, the utility model provides an electronic camera module, which is installed on both sides of the flexible printed circuit board. The image display sensor and image processing chip of the camera module make the electronic camera module short, thin, easy to assemble and flexible in application.

In order to achieve the above object, the utility model provides an electronic camera module, which has a flexible printed circuit board, the image sensor and the image processing chip are respectively combined on both sides of the flexible printed circuit board, and the lens is installed on the image sensor , the flexible printed circuit board extends a line part to install the connector, and the metal layer is coated on both sides of the line part, so that the signal transmission in the line part has anti-electromagnetic interference (Electric and Magnetic Interference, EMI) The function, the connector is connected to the circuit board of the electronic device, and can be flexibly deployed according to the product design requirements. For example, the reserved connection position of the electronic device and the position of the electronic camera module can be staggered, and the heights of the two can also be different. Generally speaking The flex angle of the flexible printed circuit board is about 50 degrees up and down. At the same time, a serial flash memory (Serial Flash RAM, SFR) is installed in the assembly part of the flexible printed circuit board. Because the image sensor often has dead pixels, such as white Dots or black spots, as well as frequency and color deviation, etc., so after the electronic camera module is completed, the dead pixels of the image sensor will be recorded in the serial flash memory during detection, and the electronic equipment will be compared by the electronic equipment when it is in use. The dead pixels of the image sensor record and provide correction and compensation for captured images, so that the captured images can be of higher quality.

Through the implementation of the utility model, the electronic camera module can be easily installed and used on various portable electronic devices, the rate of failure and damage can be reduced, and the quality of captured images can be effectively improved.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Fig. 1 is a top view of the electronic camera module of the present invention.

Fig. 2 is a cross-sectional view of the electronic camera module of the present invention.

Fig. 3 is a bottom view of the electronic camera module of the present invention.

Fig. 4 is a partially enlarged cross-sectional view of the cable arrangement part of the electronic camera module of the present invention.

FIG. 5 is a cross-sectional view of a first embodiment of a conventional electronic camera module.

FIG. 6 is a cross-sectional view of a second embodiment of a conventional electronic camera module.

In the figure, 10. Flexible printed circuit board, 11. Assembly part, 12. Wiring part, 20. Image sensor, 30. Lens, 40. Image processing chip, 50. Connector, 60. Serial flash memory, 100. Electronic camera module, 121. Metal layer.

Detailed ways

Please refer to Fig. 1 to Fig. 3, the electronic camera module 100 of the present utility model comprises a flexible printed circuit board 10, and the flexible printed circuit board 10 has an assembly part 11 and a cable arrangement part 12, and the cable arrangement part 12 is It is integrally extended from the assembly part 11 .

An image sensor 20 is disposed on the first side of the assembly portion 11 of the flexible printed circuit board 10 (as shown in FIGS. 1 and 2 ), and a lens 30 is disposed above the image sensor 20 and aimed at the image sensor 20 . In order to reduce the volume of the module, the lens 30 is made of an aspheric lens, and the thickness of the lens is only about 5 mm. Generally speaking, the image sensor 20 is soldered to the flexible printed circuit board 10 , and the lens 30 is set on the image sensor 20 and combined with an adhesive.

An image processing chip 40 is arranged on the second side of the assembly portion 11 of the flexible printed circuit board 10 (as shown in FIGS. 2 and 3 ). Based on the fact that the image sensor 20 and the image processing chip 40 are respectively combined on different sides of the assembly portion 11, Therefore, they will not be restrained by each other, the manufacturing is simple, the yield rate can be improved, and if there is an error in the previous process, it must be stopped immediately, and the loss will not be expanded.

A connector 50 is arranged at the end of the wiring part 12 of the flexible printed circuit board 10, and the connector 50 is used to connect to the printed circuit board of the electronic device to be applied, and transmit the image signal obtained by the electronic camera module 100 into electronic equipment. The combination of the connector 50 and the flexible printed circuit board 100 is a very common and simple technology, and the cable section 12 of the flexible printed circuit board 10 can be designed with different lengths and bending extension angles according to actual needs. The cable portion 12 of the circuit board 10 can be flexed upwards or downwards, generally speaking, it can be flexed by 50 degrees, thus providing great flexibility in design and use.

Therefore, the image is captured by the lens 30 to the image sensor 20, and then the digital signal is formed by the image processing chip 40, and then the signal is transmitted to the electronic device through the cable part 12 and the connector 50, so as to achieve the purpose of digital electronic photography.

Furthermore, the electronic camera module 100 of the present utility model has a flexible printed circuit board 10 and a cable section 12. The cable section 12 is responsible for the function of transmitting signals, and when used in electronic equipment, sometimes there will be electronic and/or electromagnetic In the case of interference, the utility model coats the metal layer 121 on both sides of the cable portion 12 (as shown in Figure 4) to prevent the electronic components in the electronic equipment from generating electronic electromagnetic interference (Electric & Magnetic Interference, EMI).

1, the electronic camera module 100 of the present invention further includes a flash memory, such as serial flash memory (Serial Flash RAM) 60, which is arranged on the assembly part 11 of the printed circuit board 10 and connected to the image sensor 20. The serial flash memory 60 is when the electronic camera module 100 is tested, the detection instrument compares the signal generated by the image sensor 20 with the normal image signal to find out whether the image sensor 20 has dead pixels, such as white dots or black dots, etc. And frequency deviation, then this value is stored in the serial flash memory 60. Unless the image sensor 20 is indeed a major defect, it will be discarded. Otherwise, a small amount of defects can be stored in the serial flash memory 60 through this value, and then when used, the processor in the electronic device provides the required correction and compensation. It can increase the usable range, and secondly, it can provide accurate images in actual use to enhance the practical value.

Because the volume of the electronic camera module 100 of the present invention is very small, if the wiring part 12 is not counted (because the wiring part 12 can be lengthened or shortened under different requirements), the overall volume of the present invention can reach 9 * 12 * 7mm. Moreover, the utility model is easy to manufacture, the assembling technology is not strong, and the application flexibility is very high, so the applicable electronic equipment is very wide, such as personal computer, digital camera, wrist watch, mobile phone, palm PC (Palm PC), personal digital Assistant (PDA) etc., all can add camera function, and this function can be provided by electronic camera module 100 of the present utility model.

Claims (5)

1. electro-photographic module, it comprises a printed circuit board (PCB), one is positioned at the image sensor on the printed circuit board (PCB), one is installed in image sensor top and aims at the camera lens of image sensor, one is positioned at the image processing chip on the printed circuit board (PCB), it is characterized in that: described printed circuit board (PCB) is a flexible printed wiring board, this flexible printed wiring board has the winding displacement part that an assembled portion and is extended from assembled portion, described image sensor is arranged on first side of the assembled portion of flexible printed wiring board, described image processing chip then is arranged on second side of the assembled portion of flexible printed wiring board, the winding displacement part of flexible printed wiring board and a connector electrically connect, and transmit the signal between the electronic equipment of this electro-photographic module and institute's desire application.

2. electro-photographic module as claimed in claim 1 is characterized in that: the both sides of described winding displacement part are coated with metal level.

3. electro-photographic module as claimed in claim 2 is characterized in that: described metal level is a copper foil layer.

4. electro-photographic module as claimed in claim 1 is characterized in that: described camera lens is an aspheric lens.

5. electro-photographic module as claimed in claim 1 is characterized in that: this electro-photographic module further comprises a flash memory and is connected to image sensor, and the bad point of this flash memory recording image transducer and the deviation of frequency look are for the correction and the compensation of picked-up image.

Images