Light source device for testing image sensor and light source transmission module thereof

Abstract

The utility model provides a light source device for testing an image sensor and a light source transmission module thereof. The light source device comprises a light source module and a light source transmission module. The light source module provides a light source. The light source transmission module comprises an optical fiber array and a plurality of grouping units. The optical fiber array includes a plurality of optical fibers for transmitting a light source to the light guide plate. The plurality of grouping units are used for dividing the plurality of optical fibers into a plurality of optical fiber bundles.

Description

Technical Field

[0001] The present disclosure relates to a light source device and a light source transfer module thereof, and more particularly to a light source device and a light source transfer module thereof for testing an image sensor. Background Art

[0002] During the manufacturing process of existing image sensors (e.g., CCD, CMOS), it is necessary to test whether the photoelectric change characteristics remain within the required specifications to ensure the quality of the finished product. For example, during the testing process of some image sensors, the image sensors are arranged in a two-dimensional array, and a light source device is used to illuminate the image sensors arranged in this two-dimensional array to confirm whether the operation of the image sensors is normal. Among them, the uniformity of the light source during illumination is very important for the testing of image sensors, because uneven light sources often lead to unstable test results.

[0003] In the prior art, a common light source device is a halogen lamp, which mainly transmits the light source of the halogen lamp to a light guide plate (e.g., a probe card) through a lens group, and the light guide plate divides the light source into multiple light beams corresponding to the image sensor. In this way, since the uniformity of the halogen lamp light source is stable, the aforementioned structure can provide a uniform test light source for the image sensor. While the halogen lamp can provide a uniform and stable light source, it has the disadvantages of high cost of the lens group and large space occupied by the overall system.

[0004] In addition, in the prior art, there is also a method of using light emitting diode (LED) light sources to replace halogen lamps. The LED light source first adjusts the light emitted by the diffuser, and then provides the light source to the image sensor through the light guide plate. In this way, the overall volume of the light source device can be reduced and the high cost of the lens group can be saved. However, due to the light source projection characteristics such as the light angle and radiation output of the LED light source, it is easy to cause the light source to be uneven. Therefore, the test accuracy corresponding to the LED light source is not ideal.

[0005] In summary, how to provide a uniform test light source for image sensors to test while reducing costs and reducing volume is an urgent problem to be solved in the art.

[0006] The above description of “prior art” is only to provide background technology, and does not admit that the above description of “prior art” discloses the subject matter of the present disclosure, does not constitute the prior art of the present disclosure, and any description of the above “prior art” should not be regarded as any part of the present disclosure. Utility Model Content

[0007] In view of this, in order to solve the problem of low testing efficiency in the prior art, an object of the present disclosure is to provide a light source device for testing an image sensor.

[0008] One embodiment of the present disclosure provides a light source device for testing an image sensor. The light source device includes a light source module and a light source transmission module. The light source module provides a light source. The light source transmission module includes an optical fiber array and a plurality of grouping units. The optical fiber array includes a plurality of optical fibers for transmitting the light source to a light guide plate. The plurality of grouping units are used to divide the plurality of optical fibers into a plurality of optical fiber bundles.

[0009] Furthermore, the light source device further includes a first light source adjuster, which is arranged between the light source module and the optical fiber array.

[0010] Furthermore, the first light source adjuster is a color filter or an infrared filter.

[0011] Furthermore, the light source device further includes a calibrator for receiving the light source and providing a control signal according to the light source.

[0012] Furthermore, the light source device further includes at least one second light source adjuster, which is disposed between the optical fiber bundle and the light guide plate.

[0013] Furthermore, the second light source adjuster is an infrared filter or a diffuser.

[0014] Furthermore, the plurality of optical fibers are arranged in the plurality of grouping units based on the light source intensity transmitted by each optical fiber, so that the light source intensity transmitted by the plurality of optical fiber bundles is consistent.

[0015] Furthermore, the plurality of optical fibers are arranged in the plurality of grouping units based on the regions where the respective optical fibers are located.

[0016] Furthermore, the plurality of optical fiber bundles correspond to a plurality of slots of the light guide plate.

[0017] The present disclosure also provides a light source transmission module, which is arranged in a light source device for testing an image sensor. The light source transmission module includes: an optical fiber array, including multiple optical fibers, for transmitting a light source of a light source module to a light guide plate; and multiple grouping units, for dividing the multiple optical fibers into multiple optical fiber bundles.

[0018] Furthermore, the plurality of optical fibers are arranged in the plurality of grouping units based on the light source intensity transmitted by each optical fiber, so that the light source intensity transmitted by the plurality of optical fiber bundles is consistent.

[0019] Furthermore, the plurality of optical fibers are arranged in the plurality of grouping units based on the regions where the respective optical fibers are located.

[0020] Furthermore, the multiple optical fiber bundles correspond to the multiple slots of the light guide plate. Accordingly, since the light source device for testing the image sensor of the present disclosure can transmit the light source through the optical fiber array of the light source transmission module, and the optical fibers of the optical fiber array can be evenly arranged into multiple optical fiber bundles through multiple grouping units, the light source device of the present disclosure can use a light source with high light uniformity (for example: a halogen lamp), and use the optical fiber bundles divided by the grouping units to align the slots of the light guide plate and the image sensor to be tested corresponding to the slots, which can greatly reduce the cost and size, while providing a uniform test light source for the image sensor for testing.

[0021] The above has been a fairly broad overview of the technical features and advantages of the present disclosure, so that the detailed description of the present disclosure below can be better understood. Other technical features and advantages that constitute the subject matter of the claims of the present disclosure will be described below. It should be understood by those skilled in the art to which the present disclosure belongs that the concepts and specific embodiments disclosed below can be used quite easily as modifications or designs for other structures or processes to achieve the same purposes as the present disclosure. It should also be understood by those skilled in the art to which the present disclosure belongs that such equivalent constructions cannot depart from the concept and scope of the present disclosure as defined by the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] A more comprehensive understanding of the disclosure of the present invention may be obtained by referring to the embodiments and claims in conjunction with the accompanying drawings, in which the same reference numerals refer to the same elements.

[0023] Figure 1A is a schematic diagram of a light source device according to some embodiments of the present disclosure.

[0024] Figure 1B is a schematic diagram of an optical fiber array according to some embodiments of the present disclosure.

[0025] Figure 2A is a schematic diagram of a light source device according to some embodiments of the present disclosure.

[0026] Figure 2B is a schematic diagram of an optical fiber array according to some embodiments of the present disclosure.

[0027] Figure 2C Mainly, it is a schematic diagram of grouping optical fibers of an optical fiber array according to some embodiments of the present disclosure through a grouping unit.

[0028] Figure 2D is a schematic diagram of an optical fiber array according to some embodiments of the present disclosure.

[0029] Figure 2E It is mainly another schematic diagram of grouping optical fibers of an optical fiber array according to some embodiments of the present disclosure by a grouping unit.

[0030] The reference numerals are described as follows:

[0031] 1: Light source device

[0032] 11: Light source module

[0033] 110: Light source

[0034] 12: Light source transfer module

[0035] 121: Fiber Optic Array

[0036] 1211: Fiber Optic

[0037] 1211B: Fiber Optic Bundle

[0038] 122: Grouping unit

[0039] 2: Light source device

[0040] 21: Light source module

[0041] 210: Light Source

[0042] 22: Light source transfer module

[0043] 221: Fiber Optic Array

[0044] 2211: Fiber Optics

[0045] 2211B: Fiber Optic Bundle

[0046] 222: Grouping Unit

[0047] 23: First light source adjuster

[0048] 24: Corrector

[0049] 25: Second light source adjuster

[0050] 6: Image sensor to be tested

[0051] 7: Light guide plate

[0052] 70: Slot

[0053] 8: Image sensor to be tested

[0054] 9: Light guide plate

[0055] 90: Slot

[0056] A1~A5:Area DETAILED DESCRIPTION

[0057] The following description of the present disclosure is accompanied by the accompanying drawings which are incorporated in and constitute a part of the specification, and describes an embodiment of the present disclosure, but the present disclosure is not limited to the embodiment. In addition, the following embodiments can be appropriately integrated to complete another embodiment.

[0058] "One embodiment", "embodiment", "illustrative embodiment", "other embodiments", "another embodiment", etc. mean that the embodiments described in the present disclosure may include specific features, structures or characteristics, but not every embodiment must include the specific features, structures or characteristics. Furthermore, repeated use of the phrase "in an embodiment" does not necessarily refer to the same embodiment, but may refer to the same embodiment. In addition, the socket assembly mentioned in this specification is mainly a socket assembly for wafer testing in semiconductor testing.

[0059] In order to make the present disclosure fully understood, the following description provides detailed steps and structures. Obviously, the implementation of the present disclosure will not be limited to the specific details known to those skilled in the art. In addition, the known structures and steps are no longer described in detail to avoid unnecessarily limiting the present disclosure. The preferred embodiments of the present disclosure are described in detail below. However, in addition to the detailed description, the present disclosure can also be widely implemented in other embodiments. The scope of the present disclosure is not limited to the content of the detailed description, but is defined by the claims.

[0060] It should be understood that the following disclosure provides many different embodiments or examples for implementing the different features of the present disclosure. Specific embodiments or examples of components and arrangements are described below to simplify the present disclosure. Of course, these are only examples and are not intended to be limiting. For example, the size of the element is not limited to the disclosed range or value, but may depend on the process conditions and / or the desired properties of the device. In addition, the following description of forming a first feature "on" or "on" a second feature may include an embodiment in which the first feature and the second feature are formed to be in direct contact, and may also include an embodiment in which an additional feature may be formed between the first feature and the second feature, so that the first feature and the second feature may not be in direct contact. For the sake of simplicity and clarity, various features may be drawn arbitrarily at different scales. In the accompanying drawings, some layers / features may be omitted for simplicity.

[0061] Additionally, for ease of description, spatially relative terms such as "beneath," "below," "lower," "above," "upper," etc. may be used herein to describe the relationship of one element or feature shown in the figures to another (other) element or feature. The spatially relative terms are intended to encompass different orientations of the elements in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein may be interpreted accordingly.

[0062] The embodiments of the present disclosure relate to a light source device, including a light source module and a light source transmission module. The light source module provides a light source. The light source transmission module includes an optical fiber array and a plurality of grouping units. The optical fiber array includes a plurality of optical fibers for transmitting the light source to the light guide plate. The plurality of grouping units are used to divide the plurality of optical fibers into a plurality of optical fiber bundles. More specifically, the light source device transmits the light source through the optical fiber array of the light source transmission module, and the optical fibers of the optical fiber array can be evenly arranged into a plurality of optical fiber bundles through the grouping units. Therefore, the light source device of the present disclosure can adopt a light source with a higher light uniformity (for example: a halogen lamp), and use the optical fiber bundles divided by the grouping units to align with the light guide plate slot and the image sensor to be tested corresponding to the slot, thereby greatly reducing the cost and reducing the volume, while providing a uniform test light source for the image sensor for testing. The detailed structure and description are shown in the following embodiments.

[0063] refer to Figure 1A , which is mainly a schematic diagram of a light source device 1 of some embodiments of the present disclosure. Specifically, the light source device 1 includes a light source module 11 and a light source transmission module 12. The light source module 11 provides a light source 110. The light source transmission module 12 includes an optical fiber array 121 and a plurality of grouping units 122. Please refer to Figure 1B , which is mainly a schematic diagram of an optical fiber array 121 of some embodiments of the present disclosure. The optical fiber array 121 includes a plurality of optical fibers 1211 for transmitting a light source 110 to a light guide plate 9. A plurality of grouping units 122 are used to divide the plurality of optical fibers 1211 into a plurality of optical fiber bundles 1211B.

[0064] In more detail, the light source device 1 transmits the light source 110 through the optical fiber array 121 of the light source transmission module 12, and configures the optical fibers 1211 of the optical fiber array 121 into a plurality of optical fiber bundles 1211B with uniform brightness through the grouping unit 122, and uses the optical fiber bundles 1211B divided by the grouping unit 122 to align with the slots 90 of the light guide plate 9 and the corresponding image sensor 8 to be tested. In this way, without using a lens module, the cost of using a lens module can be greatly reduced and the overall volume of the system can be effectively reduced, and a uniform test light source can also be provided for testing the image sensor 8. In one embodiment, the light source can be a light source with higher light uniformity, such as a halogen lamp. However, the light transmitted by each optical fiber 1211 in the optical fiber array 121 still has slight differences in brightness, and through this structure, the brightness of each optical fiber bundle 1211B can be adjusted to be consistent.

[0065] refer to Figure 2A, which is mainly a schematic diagram of a light source device 2 of some embodiments of the present disclosure. Specifically, the light source device 2 includes a light source module 21, a light source transmission module 22, a first light source adjuster 23, a corrector 24, and at least a second light source adjuster 25. The light source module 21 provides a light source 210. The light source transmission module 22 includes an optical fiber array 221 and a plurality of grouping units 222.

[0066] In one embodiment, the first light source adjuster 23 is used to adjust the light source 210, and may be, for example, a color filter or an infrared filter, but is not limited thereto. In one embodiment, at least one second light source adjuster 25 is used to adjust the light source 210, and may be, for example, a color filter, an infrared filter, or a light diffuser, but is not limited thereto.

[0067] Please refer to Figure 2B , which is mainly a schematic diagram of an optical fiber array 221 of some embodiments of the present disclosure. The optical fiber array 221 includes a plurality of optical fibers 2211 for transmitting a light source 210 to a light guide plate 7. A plurality of grouping units 222 are used to divide the plurality of optical fibers 2211 into a plurality of optical fiber bundles 2211B.

[0068] In more detail, the light source device 2 transmits the light source 210 through the optical fiber array 221 of the light source transmission module 22, and configures the optical fibers 2211 of the optical fiber array 221 into a plurality of optical fiber bundles 2211B with uniform brightness through the grouping unit 222, and the optical fiber bundles 2211B divided by the grouping unit 222 can be aligned with the slots 70 of the light guide plate 7 and the corresponding image sensor 6 to be tested. In this way, without using a lens module, the cost of using a lens module can be greatly reduced and the overall volume of the system can be effectively reduced, and a uniform test light source can also be provided for testing the image sensor 8. In one embodiment, the light source can be a light source with higher light uniformity, such as a halogen lamp. However, the light transmitted by each optical fiber 2211 in the optical fiber array 221 still has slight differences in brightness, and through this structure, the brightness of each optical fiber bundle 2211B can be adjusted to be consistent.

[0069] In some embodiments, the first light source adjuster 23 may be a color filter disposed between the light source module 21 and the optical fiber array 221 to change the wavelength of the light source 210 (i.e., change the color of the light source 210). Thus, various color tests may be performed by changing the wavelength of the light source 210. In some embodiments, the first light source adjuster 23 may be an infrared filter disposed between the light source module 21 and the optical fiber array 221 to filter the infrared light of the light source 210.

[0070] In some embodiments, the calibrator 24 is disposed adjacent to the light source module 21 to receive the light source 210 and determine whether the brightness of the light source 210 is within a normal range. If the calibrator 24 determines that the brightness of the light source 210 is not within a normal range, the calibrator 24 transmits a control signal to the light source module 21 to adjust its brightness, or transmits a notification to the operator, so that the operator can adjust the brightness of the light source module 21 or replace the light source module 21.

[0071] In some embodiments, the second light source adjuster 25 may be an infrared filter disposed between the optical fiber bundle 2211B and the light guide plate 7 to filter the infrared light of the light source 210, so as to perform relevant tests after filtering out the infrared light. In some embodiments, the second light source adjuster 25 may be a light diffuser disposed between the optical fiber bundle 2211B and the light guide plate 7 to scatter the light source 210 so that the light source 210 can achieve a further uniform diffusion effect. In some embodiments, the second light source adjuster 25 may be a color filter disposed between the optical fiber bundle 2211B and the light guide plate 7 to change the wavelength of the light source 210 (i.e., change the color of the light source 210).

[0072] It should be noted that the first light source adjuster 23 , the corrector 24 , the second light source adjuster 25 and the number of components can be selectively configured according to needs, and it is not limited that all components need to be configured at the same time, nor is it limited to their number.

[0073] Please refer to Figure 2B and Figure 2C , mainly a schematic diagram of grouping the optical fibers 2211 of the optical fiber array 221 of some embodiments of the present disclosure by the grouping unit 222. Please refer to Figure 2B , specifically, Figure 2B The plurality of optical fibers 2211 in the grouping unit 222 are arranged based on the area A1 where each optical fiber 2211 is located. In other words, all optical fibers 2211 in the same area A1 are arranged in one grouping unit 222. For example, Figure 2B In the figure, the five optical fibers 2211 in the area A1 are combined into one optical fiber bundle 2211B.

[0074] Special explanation is required for easy understanding. Figure 2C In the figure, only the five optical fibers 2211 in area A1 are combined into a single optical fiber bundle 2211B by a single grouping unit 222. Figure 2B The optical fiber 2211 that does not fall in the area A1 is Figure 2C However, it is not intended to limit the embodiments of the present disclosure, and those skilled in the art should be able to understand how to use multiple grouping units 222 to group the optical fibers 2211 into multiple optical fiber bundles 2211B through the above description.

[0075] Please refer to Figure 2D and Figure 2E , mainly another schematic diagram illustrating how the optical fibers 2211 of the optical fiber array 221 of some embodiments of the present disclosure are grouped by the grouping unit 222. Specifically, in order to further uniformly configure the light source 210, the multiple optical fibers 2211 are configured in the multiple grouping units 222 based on the light source intensity transmitted by each optical fiber, so that the light source intensity transmitted by the multiple optical fiber bundles 2211B is consistent. In other words, the light source intensity transmitted by each optical fiber bundle 2211B tends to be consistent. This configuration can be mainly achieved by evenly configuring the multiple optical fibers 2211 in different areas in different grouping units 222.

[0076] For example, the overall area where the optical fibers 2211 are distributed is divided into four different areas A2, A3, A4, and A5, and one optical fiber 2211 is selected from each of the different areas A2, A3, A4, and A5 to form a fiber bundle 2211B. In this way, the concern that the optical fibers 2211 in the same area may transmit a stronger or weaker light source 210 after being selected together can be eliminated. In one embodiment, after the light source 210 is projected, the area with more concentrated brightness (i.e., the area with stronger light source intensity) can be divided into a zone, and different areas can be divided in order based on the degree of brightness concentration. In this way, the method of selecting optical fibers 2211 in different areas and combining them into a fiber bundle 2211B can also effectively make the light source intensity transmitted by each fiber bundle 2211B after grouping tend to be consistent.

[0077] Special explanation is required for easy understanding. Figure 2E In the figure, only a single grouping unit 222 is used to combine the selected four optical fibers 2211 into a single optical fiber bundle 2211B. Figure 2D The unselected optical fiber 2211 is Figure 2E It is not intended to limit the embodiments of the present disclosure, and those skilled in the art should be able to understand how to use multiple grouping units 222 to group the optical fibers 2211 into multiple optical fiber bundles 2211B through the above description.

[0078] In summary, the light source device of the embodiment of the present disclosure can transmit light through the optical fiber array of the light source transmission module, and can evenly configure the optical fibers of the optical fiber array into multiple optical fiber bundles through the grouping unit. Therefore, the light source device of the present disclosure can adopt a light source with higher light uniformity (for example, a halogen lamp), and use the optical fiber bundles divided by the grouping unit to align with the light guide plate slot and the image sensor to be tested corresponding to the slot. This can greatly reduce costs and reduce volume, while providing a uniform test light source for image sensors for testing, effectively solving the problems of the prior art.

[0079] Although the present disclosure and its advantages have been described in detail, it should be understood that various changes, substitutions and replacements can be made without departing from the concept and scope of the present disclosure defined by the claims. For example, many of the above processes can be implemented in different ways, and other processes or combinations thereof can be used to replace many of the above processes.

[0080] Furthermore, the scope of the present disclosure is not limited to the specific embodiments of the processes, machines, manufactures, material compositions, means, methods, and steps described in the specification. Those skilled in the art can understand from the disclosure of the present disclosure that existing or future developed processes, machines, manufactures, material compositions, means, methods, or steps that have the same functions or achieve substantially the same results as the corresponding embodiments described herein can be used according to the present disclosure. Accordingly, these processes, machines, manufactures, material compositions, means, methods, or steps are included in the claims of the present disclosure.

Claims

1. A light source device for testing an image sensor, characterized in that: Include: A light source module provides a light source; A light source transmission module, comprising: an optical fiber array, comprising a plurality of optical fibers, for transmitting the light source to a light guide plate; and A plurality of grouping units are used to divide the plurality of optical fibers into a plurality of optical fiber bundles.

2. The light source device according to claim 1, wherein: It also includes a first light source adjuster, which is arranged between the light source module and the optical fiber array.

3. The light source device according to claim 2, characterized in that: The first light source adjuster is a color filter or an infrared filter.

4. The light source device according to claim 1, wherein: The invention also comprises a corrector for receiving the light source and providing a control signal according to the light source.

5. The light source device according to claim 1, wherein: It also includes at least one second light source adjuster, which is arranged between the optical fiber bundle and the light guide plate.

6. The light source device according to claim 5, characterized in that: The second light source modifier is an infrared filter or a diffuser.

7. The light source device according to claim 1, wherein: The plurality of optical fibers are arranged in the plurality of grouping units based on the light source intensity transmitted by each optical fiber, so that the light source intensity transmitted by the plurality of optical fiber bundles is consistent.

8. The light source device according to claim 1, wherein: The plurality of optical fibers are arranged in the plurality of grouping units based on regions where the respective optical fibers are located.

9. The light source device according to claim 1, wherein: The plurality of optical fiber bundles correspond to the plurality of slots of the light guide plate.

10. A light source transmission module, arranged in a light source device for testing an image sensor, characterized in that: The light source transfer module includes: an optical fiber array, comprising a plurality of optical fibers, for transmitting a light source of a light source module to a light guide plate; and A plurality of grouping units are used to divide the plurality of optical fibers into a plurality of optical fiber bundles.

11. The light source transfer module according to claim 10, wherein: The plurality of optical fibers are arranged in the plurality of grouping units based on the light source intensity transmitted by each optical fiber, so that the light source intensity transmitted by the plurality of optical fiber bundles is consistent.

12. The light source transfer module according to claim 10, wherein: The plurality of optical fibers are arranged in the plurality of grouping units based on regions where the respective optical fibers are located.

13. The light source transfer module according to claim 10, wherein: The plurality of optical fiber bundles correspond to the plurality of slots of the light guide plate.

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