COB module detection device

Abstract

The utility model relates to the field of COB module detection, and especially relates to a COB module detection device comprising a support comprising a pedestal and a vertical rod arranged vertical to the pedestal; the lightening module is electrically connected with the to-be-tested COB module and is used for lightening the COB module according to a preset strategy; and the electron microscope is movably connected with the vertical rod through an adjusting structure and is used for observing the COB module lightened by the lightening module. According to the COB module detection device of the utility model, through the arrangement of the lightening module, dead pixels can be positioned through the electron microscope under the condition that the COB module to be detected is lightened, and then the dead pixels can be observed under the condition that the COB module is lightened, and therefore, the dead pixel positioning speed of the electron microscope can be greatly improved, and the detection efficiency can be improved. And therefore, the defective pixel detection efficiency can be greatly improved, and errors are not easy to occur.

Description

Technical Field

[0001] The utility model relates to the field of COB module detection, in particular to a COB module detection device. Background Art

[0002] At present, the detection of COB (chip-on-board chip package) direct display module is divided into two processes, including: first, the COB direct display module is powered on and lit to determine the bad pixel, and the position coordinates of the bad pixel are recorded; then, without lighting the COB direct display module, the bad pixel is placed in the field of view of the microscope according to the position coordinates to observe and determine the cause of the fault. However, without lighting the COB direct display module, it is impossible to quickly place the bad pixel in the field of view of the microscope based on the position coordinates of the bad pixel, and it is easy to make mistakes, resulting in low efficiency and easy error in bad pixel detection.

[0003] Therefore, a COB module detection device that can quickly and conveniently determine and observe bad points is urgently needed in the art. Utility Model Content

[0004] In order to quickly and conveniently determine and observe bad points, the utility model proposes a COB module detection device, including: a bracket, including a base and a vertical pole arranged perpendicular to the base; a lighting module, electrically connected to the COB module to be tested, and used to light up the COB module according to a preset strategy; an electron microscope, movably connected to the vertical pole through an adjustment structure, and used to observe the COB module lit by the lighting module.

[0005] In one or more embodiments, a plurality of busbars are embedded in the base, and a plurality of positioning holes are provided on the surface of the base directly above each of the busbars, the plurality of positioning holes are through-connected to the busbars, the plurality of busbars include at least one positive busbar and one negative busbar; the plurality of busbars are electrically connected to the lighting modules respectively.

[0006] In one or more embodiments, the width of the plurality of busbar copper bars is comparable to the width of a standard pin foot, and the spacing between the plurality of busbar copper bars is comparable to the spacing between the standard pin feet.

[0007] In one or more embodiments, the COB module detection device of the present invention further includes: a plurality of positioning posts, each of which has the same length and is used to be inserted into the positioning holes to form a supporting plane and to provide power to the COB module to be tested.

[0008] In one or more embodiments, the plurality of positioning posts is at least three and includes at least two conductive positioning posts and one non-conductive positioning post.

[0009] In one or more embodiments, each of the positioning posts includes: a flat end for electrically connecting to the busbar copper bus; and a pointed end for electrically connecting to the COB module to be tested and fixing the COB module.

[0010] In one or more embodiments, the lighting module includes: a control chip, which is preset with multiple lighting logics; a control button, which is electrically connected to the control chip and is used to control the cyclic execution of the multiple lighting logics; an output port, which is electrically connected to the control chip and is used to output the electrical signal of the currently executed lighting logic to the corresponding busbar.

[0011] In one or more embodiments, the main body of the adjustment structure is a trapezoidal block, the upper bottom surface of the trapezoidal block is connected to an electron microscope fixing part, a through hole is provided near the lower bottom surface of the trapezoidal block, the adjustment structure is sleeved on the vertical pole through the through hole, and a threaded hole is also provided on the outer side wall of the through hole, and the threaded hole is used to fix the adjustment structure to the vertical pole by screwing in a bolt.

[0012] In one or more embodiments, the adjustment structure includes: an adjustment member, which is a trapezoidal block, the upper bottom surface of the trapezoidal block is provided with a slot, and a through hole is provided near the lower bottom surface of the trapezoidal block, and the adjustment member is sleeved on the vertical pole through the through hole, and a threaded hole is also provided on the outer wall of the through hole, and the threaded hole is used to fix the adjustment member to the vertical pole by screwing in bolts; a quick-release member, which is a trapezoidal block, the upper bottom surface of the trapezoidal block is connected to an electron microscope fixing member, and the lower bottom surface of the trapezoidal block is provided with an insert structure, and the insert structure is detachably connected to the slot of the adjustment member.

[0013] In one or more embodiments, the COB module detection device of the present invention further includes: a display, which is electrically connected to the electron microscope and is used to display the observation object of the electron microscope.

[0014] The beneficial effects of the utility model include: the COB module detection device of the utility model can locate the bad point through an electron microscope when the COB module to be tested is illuminated by setting a lighting module, and then observe the bad point when the COB module is illuminated, thereby greatly improving the speed of locating the bad point with an electron microscope, and thus greatly improving the efficiency of bad point detection and making it less prone to errors; and by pre-embedding the busbar copper busbar in the base, setting a positioning hole just above the busbar copper busbar, and setting a positioning column for electrically connecting the COB module and the busbar copper busbar, it is possible to avoid bending of the pin feet during the test, and can adapt to COB modules of different models and sizes to provide support and power supply for them. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A side view of a COB module detection device structural schematic diagram of the utility model;

[0017] Figure 2 It is a stereoscopic diagram of the structural schematic diagram of a COB module detection device of the present utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0019] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0020] In order to quickly and conveniently determine and observe bad points, the utility model proposes a COB module detection device, such as Figure 1 As shown, it includes: a bracket 100, including a base 110 and a vertical pole 120 arranged perpendicular to the base; a lighting module 200, which is electrically connected to the COB module to be tested and is used to light up the COB module according to a preset strategy; an electron microscope 300, which is movably connected to the vertical pole through an adjustment structure 400 and is used to observe the COB module lit by the lighting module.

[0021] Specifically, the COB module detection device of the present invention can locate bad points through an electron microscope when the COB module to be tested is illuminated by setting a lighting module, and then observe the bad points when the COB module is illuminated, thereby greatly improving the speed of locating bad points with an electron microscope, and thus greatly improving the efficiency of bad point detection and making it less prone to errors. Among them, the form of bad points includes being unable to be illuminated or being color-cast, such as one or more of the three primary colors of red, yellow, and blue being unable to be illuminated.

[0022] In one embodiment, a plurality of busbar copper bars 111 are embedded in the base 110, and a plurality of positioning holes (not shown) are provided on the surface of the base directly above each busbar copper bar 111, and the plurality of positioning holes are through-connected to the busbar copper bars 111, and the plurality of busbar copper bars 111 include at least one positive busbar copper bar and one negative busbar copper bar; the plurality of busbar copper bars 111 are electrically connected to the lighting modules 200, respectively.

[0023] Specifically, in order to facilitate power supply for the COB module to be tested, the utility model embeds multiple busbars 111 in the base, and provides multiple positioning holes on the surface of the base directly above each busbar 111, so that the power pins of the COB module to be tested can be inserted into the positioning holes and electrically connected to the busbars 111, and the positioning holes can also serve to fix the COB module.

[0024] In one embodiment, the width of the multiple busbar copper bars 111 is equivalent to the width of the standard pin, and the spacing between the multiple busbar copper bars 111 is equivalent to the spacing between the standard pin. Specifically, the purpose of this embodiment is to facilitate docking with the COB module; in another optional embodiment, when the COB module adopts a gold finger interface, the width of the multiple busbar copper bars 111 is equivalent to the width of the standard gold finger, and the spacing between the multiple busbar copper bars 111 is equivalent to the spacing between the standard gold fingers.

[0025] In one embodiment, in order to avoid bending the pins of the COB module to be tested, the COB module detection device of this embodiment further includes: a plurality of positioning posts 500, the plurality of positioning posts 500 have the same length, are used to be inserted into the positioning holes to form a support plane, and to power the COB module to be tested. Specifically, this embodiment realizes the electrical connection between the pins of the COB module and the busbar copper bar through the positioning posts 500, which can avoid bending the pins during the test process, and can adapt to COB modules of different models and sizes to provide support and power supply for them.

[0026] In one embodiment, the plurality of positioning posts 500 are at least three, and include at least two conductive positioning posts and one non-conductive positioning post. Specifically, the power pins of the COB module have positive and negative poles, so two conductive positioning posts are required to achieve electrical connection with the busbar copper bar 111, and in order to form a stable support plane, a positioning post is also required, which can be a conductive positioning post, and preferably a non-conductive positioning post.

[0027] In one embodiment, each positioning post 500 includes: a flat end for electrically connecting to the busbar copper busbar; a pointed end for electrically connecting to the COB module to be tested and fixing the COB module. Specifically, during use, the positioning post can be placed according to the shape of the COB module, with the pointed end facing upward to facilitate contact with the pin pin, and the flat end facing downward to be inserted into the positioning hole and electrically connected to the busbar copper busbar 111.

[0028] In one embodiment, the lighting module 200 includes: a control chip, which is preset with multiple lighting logics; a control button, which is electrically connected to the control chip and is used to control the cyclic execution of multiple lighting logics; an output port, which is electrically connected to the control chip and is used to output the electrical signal of the currently executed lighting logic to the corresponding busbar copper bus 111. Specifically, the lighting logic includes: respectively controlling the COB module to display the three primary colors of red, yellow and blue in sequence, which can be specifically controlled by the control button, such as pressing the control button for the first time to light up the red color, pressing it again to turn it off, and then pressing it again to light up the yellow color, pressing it again to turn it off, and then pressing it again to light up the blue color, pressing it again to turn it off, and pressing it again to cycle the above process.

[0029] In one embodiment, the main body of the adjustment structure 400 is a trapezoidal block, the upper bottom surface of the trapezoidal block is connected to the electron microscope fixing part, a through hole is arranged near the lower bottom surface of the trapezoidal block, the adjustment structure 400 is sleeved on the vertical pole 120 through the through hole, and a threaded hole is also arranged on the outer wall of the through hole, and the threaded hole is used to fix the adjustment structure to the vertical pole by screwing in bolts.

[0030] In one embodiment, the adjustment structure 400 includes: an adjustment member 410, which is a trapezoidal block. A slot is provided on the upper bottom surface of the trapezoidal block, and a through hole is provided near the lower bottom surface of the trapezoidal block. The adjustment member 410 is sleeved on the vertical pole through the through hole. A threaded hole is also provided on the outer wall of the through hole. The threaded hole is used to fix the adjustment member to the vertical pole by screwing in bolts; a quick-release member 420, which is a trapezoidal block. The upper bottom surface of the trapezoidal block is connected to an electron microscope fixing member, and the lower bottom surface of the trapezoidal block is provided with an insert structure, which is detachably connected to the slot of the adjustment member.

[0031] In one embodiment, the COB module detection device of the present invention further includes: a display 600, which is electrically connected to the electron microscope 300 and is used to display the observation object of the electron microscope.

[0032] The above are exemplary embodiments disclosed by the present utility model, but it should be noted that various changes and modifications may be made without departing from the scope of the present utility model embodiments disclosed by the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. In addition, although the elements disclosed by the present utility model embodiments may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0033] It should be understood that, as used herein, the singular forms "a", "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations including one or more of the associated listed items.

[0034] The serial numbers of the embodiments disclosed in the above-mentioned embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the above embodiments of the present invention, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A COB module detection device, characterized in that: include: A bracket, comprising a base and a vertical rod arranged perpendicular to the base; A lighting module, electrically connected to the COB module to be tested, and used to light up the COB module according to a preset strategy; The electron microscope is movably connected to the vertical pole through an adjusting structure, and is used to observe the COB module illuminated by the lighting module.

2. The COB module detection device according to claim 1, characterized in that: The base is embedded with a plurality of busbar copper bars, and a plurality of positioning holes are provided on the surface of the base directly above each of the busbar copper bars, the plurality of positioning holes are connected to the busbar copper bars through-through, and the plurality of busbar copper bars include at least one positive busbar copper bar and one negative busbar copper bar; The plurality of busbar copper bars are electrically connected to the lighting modules respectively.

3. The COB module detection device according to claim 2, characterized in that: The width of the plurality of busbar copper bars is equivalent to the width of a standard pin foot, and the spacing between the plurality of busbar copper bars is equivalent to the spacing between the standard pin feet.

4. The COB module detection device according to claim 2, characterized in that: Also includes: A plurality of positioning posts, each of which has the same length, are used to be inserted into the positioning holes to form a supporting plane and to provide power for the COB module to be tested.

5. The COB module detection device according to claim 4, characterized in that: The number of the plurality of positioning posts is at least three, and the plurality of positioning posts includes at least two conductive positioning posts and one non-conductive positioning post.

6. The COB module detection device according to claim 5, characterized in that: Each of the positioning columns comprises: A flat end, used for electrical connection with the busbar copper bar; The tip is used to electrically connect to the COB module to be tested and fix the COB module.

7. The COB module detection device according to claim 2, characterized in that: The lighting module comprises: Control chip, with multiple lighting logics preset; A control button, electrically connected to the control chip, for controlling the cyclic execution of the multiple lighting logics; The output port is electrically connected to the control chip and is used to output the electrical signal of the currently executed lighting logic to the corresponding busbar copper bar.

8. The COB module detection device according to claim 1, characterized in that: The main body of the adjustment structure is a trapezoidal block, the upper bottom surface of the trapezoidal block is connected to an electron microscope fixing part, a through hole is arranged near the lower bottom surface of the trapezoidal block, the adjustment structure is sleeved on the vertical pole through the through hole, and a threaded hole is also arranged on the outer side wall of the through hole, and the threaded hole is used to fix the adjustment structure to the vertical pole by screwing in a bolt.

9. The COB module detection device according to claim 5, characterized in that: The regulatory structure comprises: An adjusting member, wherein the adjusting member is a trapezoidal block, wherein a slot is provided on the upper bottom surface of the trapezoidal block, and a through hole is provided near the lower bottom surface of the trapezoidal block, wherein the adjusting member is sleeved on the vertical pole through the through hole, and a threaded hole is further provided on the outer side wall of the through hole, wherein the threaded hole is used to fix the adjusting member to the vertical pole by screwing in a bolt; The quick-release part is a trapezoidal block, the upper bottom surface of the trapezoidal block is connected to an electron microscope fixing part, and the lower bottom surface of the trapezoidal block is provided with an insert structure, and the insert structure is detachably connected to the slot of the adjusting part.

10. The COB module detection device according to claim 1, characterized in that: Also includes: A display is electrically connected to the electron microscope and is used to display an observation object of the electron microscope.

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