Electrolysis device for preparing electroplating alloy bump

Abstract

The utility model discloses an electrolysis device for preparing electroplated alloy bumps, which comprises an electrolysis tank, a control panel is mounted on the front side of the electrolysis tank, a titanium mesh is mounted in the electrolysis tank, a plated plate is arranged in the electrolysis tank, mounting racks are symmetrically mounted on the inner wall of the electrolysis tank, and the plated plate is slidably connected with the mounting racks. The top end of the titanium mesh and the top end of the plated plate are each provided with a first power connection port. The top end of the electrolysis box is provided with a power connection control assembly. According to the utility model, during working, the positive electrode and the negative electrode of the storage battery are electrically connected with the two second plugs through the two wires respectively, and the rotating shaft can be driven to rotate under the driving of the motor, so that the positions of the two second plugs are exchanged, and when the second plugs are inserted into the second power connection ports twice, the second plugs are inserted into the second power connection ports; and the positions of the anode and the cathode formed in the electrolysis tank are exchanged, so that the current phase sequence is convenient to change, and the electroplating alloy bump is convenient to prepare.

Description

Technical Field

[0001] The utility model belongs to the technical field of preparing electroplated alloy bumps, in particular to an electrolysis device for preparing electroplated alloy bumps. Background Art

[0002] COG packaging is currently part of advanced packaging. With the development of the entire industry, the COG market is becoming increasingly important. Currently, COG mainly involves the production of gold bumps. As gold, a precious metal, rises in international gold prices, the production cost is also increasing. All companies are increasing investment in the research and development of gold-silver alloy bumps. When introducing gold-silver alloy, how to solve the problem of silver easily oxidizing on the surface of the gold-silver alloy bumps is of paramount importance. According to the basic principle of electroplating: a positive current is applied to the anode titanium mesh and a negative current is applied to the plated surface. Gold and silver ions gain electrons at the cathode, precipitating gold-silver alloy bumps. By changing the current phase sequence, the gold-silver alloy bump acts as the anode. During the electrolysis process, due to the higher activity of silver, the silver ions in the gold-silver alloy bump are freed and adsorbed on the cathode. At this time, the surface layer of the gold-silver alloy has become a pure gold layer. By controlling the electrolysis time, the thickness of the gold layer on the surface can be controlled to achieve surface oxidation resistance. However, the following defects still exist:

[0003] During the electroplating process, the current phase sequence needs to be changed. Generally, changing the current phase sequence requires the staff to reverse the positive and negative poles of the battery, which is usually done through manual connection, which is more troublesome. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an electrolytic device for preparing electroplated alloy bumps, which effectively solves the problem of manually changing the current phase sequence during the electroplating process, which is rather troublesome.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: an electrolytic device for preparing electroplated alloy bumps, comprising an electrolytic box, a control panel mounted on the front of the electrolytic box, a titanium mesh mounted inside the electrolytic box, a plate to be plated disposed inside the electrolytic box, a mounting bracket symmetrically mounted on the inner wall of the electrolytic box, the plate to be plated being slidably connected to the mounting bracket, a first power connection port mounted on the top of the titanium mesh and the top of the plate to be plated, and a power connection control assembly mounted on the top of the electrolytic box;

[0006] The power control assembly includes a top plate arranged above the electrolytic box, a power control component is installed on the top plate, a horizontal plate is provided below the top plate, first plugs are symmetrically installed at the bottom end of the horizontal plate, the two first plugs are respectively inserted into the two first power ports, and second power ports are symmetrically installed at the top end of the horizontal plate, and the two second power ports are respectively electrically connected to the two first plugs.

[0007] Preferably, mounting platforms are installed on the front and back of the electrolytic box, a cylinder is installed on the top of the mounting platform, and the top plate is fixedly connected to the output end of the cylinder.

[0008] Preferably, the power control component includes a rotating shaft rotatably mounted on the top plate, a bottom plate is mounted on the bottom end of the rotating shaft, second plugs are symmetrically mounted on the bottom end of the bottom plate, the two second plugs are respectively inserted into the two second power ports, and a snap-fit ​​fixing component is installed between the bottom plate and the horizontal plate.

[0009] Preferably, a rotating platform is installed on the top of the rotating shaft, a battery is installed on the top of the rotating platform, the positive and negative poles of the battery are connected to wires, and the two wires pass through the interior of the rotating shaft and are electrically connected to the two second plugs respectively.

[0010] Preferably, universal wheels are installed at equal angles on the bottom end of the rotating platform, a gear ring is installed on the outer wall of the rotating platform, one side of the gear ring is meshed with a gear, the gear is fixedly connected to the output shaft of the motor, and the motor is fixedly installed on the top plate.

[0011] Preferably, the clamping fixing assembly includes a fixed block fixedly installed on the top of the horizontal plate, with clamping grooves symmetrically provided on both sides of the fixed block, a fixed cylinder installed at the bottom end of the base plate, the fixed cylinder is sleeved on the outside of the fixed block, side cylinders are symmetrically installed on both sides of the fixed cylinder, the side cylinders are connected to the fixed cylinder, and a clamping rod is movably installed inside the side cylinder.

[0012] Preferably, a spring is installed at one end of the clamping rod away from the interior of the fixed tube, one end of the spring is fixedly connected to the inner wall of the end of the side tube, a magnetic block is installed on the clamping rod, and an electromagnet is installed on the inner wall of the end of the side tube. When the electromagnet is energized, a repulsive force is generated on the magnetic block, so that the clamping rod is stuck in the inside of the clamping slot.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] During operation, the positive and negative electrodes of the battery are electrically connected to the two second plugs through two wires. Under the drive of the motor, the rotating shaft can be driven to rotate, so that the two second plugs are swapped. When the second plugs are inserted into the second power port twice, the positions of the anode and cathode formed inside the electrolytic box are swapped, which facilitates the change of the current phase sequence, thereby facilitating the preparation of electroplated alloy bumps.

[0015] During operation, the clamping rod in the side tube can be clamped into the clamping slot when the electromagnet is energized. When the position of the anode and cathode needs to be changed, the clamping rod is separated from the clamping slot, so that the rotating shaft rotates alone, so that the two second plugs exchange positions. When the preparation is completed and the plate to be plated needs to be taken out, the clamping rod is clamped into the clamping slot, which facilitates the movement of the horizontal plate and the removal of the plate to be plated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0017] In the attached figure:

[0018] Figure 1 This is a schematic structural diagram of an electrolytic device for preparing electroplated alloy bumps according to the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the electrolytic box of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the power connection control component of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the clamping and fixing assembly of the present invention.

[0022] In the figure: 1. electrolytic box; 2. control panel; 3. titanium mesh; 4. plate to be plated; 5. first power port; 6. mounting bracket; 7. power control assembly; 701. mounting table; 702. top plate; 703. cylinder; 704. horizontal plate; 705. first plug; 706. second power port; 707. rotating shaft; 708. bottom plate; 709. second plug; 710. rotating platform; 711. battery; 712. universal wheel; 713. gear ring; 714. gear; 715. motor; 8. snap-fit ​​fixing assembly; 801. fixing block; 802. slot; 803. fixing cylinder; 804. side cylinder; 805. clamping rod; 806. spring; 807. magnetic block; 808. electromagnet. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Embodiment 1, by Figure 1-4 The utility model relates to an electrolytic device for preparing electroplated alloy bumps, comprising an electrolytic box 1, a control panel 2 being installed on the front of the electrolytic box 1, a titanium mesh 3 being installed inside the electrolytic box 1, a plate to be plated 4 being provided inside the electrolytic box 1, a mounting frame 6 being symmetrically installed on the inner wall of the electrolytic box 1, the plate to be plated 4 being slidably connected to the mounting frame 6, a first power connection port 5 being installed on the top of the titanium mesh 3 and the top of the plate to be plated 4, and a power connection control assembly 7 being installed on the top of the electrolytic box 1;

[0025] The power control assembly 7 includes a top plate 702 arranged above the electrolytic box 1, a power control component is installed on the top plate 702, a horizontal plate 704 is provided below the top plate 702, a first plug 705 is symmetrically installed at the bottom end of the horizontal plate 704, the two first plugs 705 are respectively inserted into the two first power ports 5, and a second power port 706 is symmetrically installed at the top end of the horizontal plate 704, the two second power ports 706 are respectively electrically connected to the two first plugs 705, and the front and back of the electrolytic box 1 are A mounting platform 701 is installed, a cylinder 703 is installed on the top of the mounting platform 701, a top plate 702 is fixedly connected to the output end of the cylinder 703, an electrified control part includes a rotating shaft 707 rotatably mounted on the top plate 702, a bottom plate 708 is installed at the bottom end of the rotating shaft 707, a second plug 709 is symmetrically installed at the bottom end of the bottom plate 708, the two second plugs 709 are respectively inserted into the two second power ports 706, a clamping fixing assembly 8 is installed between the bottom plate 708 and the horizontal plate 704, and the rotating shaft 707 is mounted on the bottom end of the bottom plate 708. A rotating platform 710 is installed at the top of the shaft 707, and a battery 711 is installed at the top of the rotating platform 710. The positive and negative poles of the battery 711 are connected to wires. The two wires pass through the interior of the rotating shaft 707 and are electrically connected to the two second plugs 709 respectively. A universal wheel 712 is installed at an equal angle at the bottom of the rotating platform 710. A gear ring 713 is installed on the outer wall of the rotating platform 710. One side of the gear ring 713 is meshed with a gear 714. The gear 714 is fixedly connected to the output shaft of the motor 715. The motor 715 is fixedly installed on the top plate 702. The positive and negative poles of the battery 711 are electrically connected to the two second plugs 709 respectively through two wires. Under the drive of the motor 715, the rotating shaft 707 can be driven to rotate, so that the two second plugs 709 exchange positions. When the second plug 709 is inserted into the second power port 706 twice, the positions of the anode and cathode formed inside the electrolytic box 1 are exchanged, which facilitates the change of the current phase sequence, thereby facilitating the preparation of electroplated alloy bumps.

[0026] The clamping and fixing assembly 8 includes a fixing block 801 fixedly mounted on the top of the horizontal plate 704, and a clamping groove 802 is symmetrically opened on both sides of the fixing block 801. A fixing cylinder 803 is installed at the bottom end of the bottom plate 708. The fixing cylinder 803 is sleeved on the outside of the fixing block 801. Side cylinders 804 are symmetrically installed on both sides of the fixing cylinder 803. The side cylinders 804 are connected to the fixing cylinder 803. A clamping rod 805 is movably installed inside the side cylinder 804. A spring 806 is installed at one end of the clamping rod 805 away from the inside of the fixing cylinder 803. One end of the spring 806 is fixedly connected to the inner wall of the end of the side cylinder 804. A magnetic block 80 is installed on the clamping rod 805. 7. An electromagnet 808 is installed on the inner wall of the end of the side tube 804. When the electromagnet 808 is energized, it generates a repulsive force on the magnetic block 807, so that the clamping rod 805 is clamped into the inside of the clamping slot 802. The clamping rod 805 in the side tube 804 can be clamped into the clamping slot 802 when the electromagnet 808 is energized. When it is necessary to change the positions of the anode and cathode, the clamping rod 805 is separated from the clamping slot 802, so that the rotating shaft 707 rotates alone, so that the two second plugs 709 exchange positions. When the preparation is completed and the plate 4 needs to be taken out, the clamping rod 805 is clamped into the clamping slot 802, which makes it convenient to move the cross plate 704 and take out the plate 4.

[0027] Working principle: During operation, first insert the plate 4 to be plated into the inner side of the mounting frame 6, and insert the two first plugs 705 on the horizontal plate 704 into the two first power ports 5 respectively. Then, the output end of the cylinder 703 is controlled to retract, so that the top plate 702 moves downward, driving the two second plugs 709 to move downward and insert them into the two second power ports 706 respectively. The required electrolyte is filled into the electrolytic box 1, so that a positive current is applied to the anode titanium mesh 3 and a negative current is applied to the surface of the plate 4, so that the gold and silver ions obtain electrons near the plate 4 and precipitate gold-silver alloy bumps.

[0028] The output end of the cylinder 703 is then controlled to extend, pushing the top plate 702 upward, causing the second plug 709 to separate from the second power port 706. The motor 715 is then turned on to rotate the gear 714. Since the gear 714 engages with the gear ring 713 on the outside of the rotating platform 710, it drives the rotating shaft 707 to rotate, causing the two second plugs 709 to exchange positions. The cylinder 703 is then used to move the second plugs 709 downward and insert them into the two second power ports 706 respectively, thereby achieving the purpose of changing the current phase sequence, so that the gold-silver alloy bump serves as the anode. During the electrolysis process, due to the higher activity of silver, the silver ions in the gold-silver alloy bump are free and adsorbed on the cathode. At this time, the surface layer of the gold-silver alloy has become a pure gold layer. By controlling the electrolysis time, the thickness of the gold layer on the surface can be controlled, achieving the effect of surface anti-oxidation.

[0029] After the preparation is completed, the plate to be plated 4 needs to be taken out, and then the gold-silver alloy bumps formed on the plate to be plated 4 need to be removed. At this time, the electromagnet 808 is controlled to be energized to generate a repulsive force on the magnetic block 807, thereby pushing the clamping rod 805 into the clamping slot 802. At this time, the top plate 702 is pushed upward by the cylinder 703, which can separate the first plug 705 from the first power port 5. At the same time, the rotating shaft 707 rotates, which can drive the horizontal plate 704 to rotate away from the top of the plate to be plated 4, thereby facilitating the upward removal of the plate to be plated 4.

Claims

1. An electrolytic device for preparing electroplated alloy bumps, comprising an electrolytic box (1), characterized in that: The front of the electrolytic box (1) is provided with a control panel (2), the interior of the electrolytic box (1) is provided with a titanium mesh (3), the interior of the electrolytic box (1) is provided with a plate receiving plate (4), a mounting frame (6) is symmetrically mounted on the inner wall of the electrolytic box (1), the plate receiving plate (4) and the mounting frame (6) are slidably connected, the top of the titanium mesh (3) and the top of the plate receiving plate (4) are both provided with a first power connection port (5), and the top of the electrolytic box (1) is provided with a power connection control assembly (7); The power connection control assembly (7) comprises a top plate (702) arranged above the electrolytic box (1), a power-on control component is installed on the top plate (702), a horizontal plate (704) is provided below the top plate (702), first plugs (705) are symmetrically installed at the bottom end of the horizontal plate (704), the two first plugs (705) are respectively inserted into the inside of the two first power connection ports (5), and second power connection ports (706) are symmetrically installed at the top end of the horizontal plate (704), and the two second power connection ports (706) are respectively electrically connected to the two first plugs (705).

2. The electrolytic device for preparing electroplated alloy bumps according to claim 1, characterized in that: The front and back sides of the electrolytic box (1) are both equipped with mounting platforms (701), the top of the mounting platforms (701) is equipped with a cylinder (703), and the top plate (702) is fixedly connected to the output end of the cylinder (703).

3. The electrolytic device for preparing electroplated alloy bumps according to claim 1, characterized in that: The power-on control component includes a rotating shaft (707) rotatably mounted on the top plate (702), a bottom plate (708) being mounted at the bottom end of the rotating shaft (707), a second plug (709) being symmetrically mounted at the bottom end of the bottom plate (708), the two second plugs (709) being respectively inserted into the inside of the two second power ports (706), and a snap-fit ​​fixing assembly (8) being mounted between the bottom plate (708) and the horizontal plate (704).

4. The electrolytic device for preparing electroplated alloy bumps according to claim 3, characterized in that: A rotating platform (710) is installed at the top of the rotating shaft (707), and a battery (711) is installed at the top of the rotating platform (710). The positive and negative poles of the battery (711) are connected to wires, and the two wires pass through the interior of the rotating shaft (707) and are electrically connected to the two second plugs (709) respectively.

5. The electrolytic device for preparing electroplated alloy bumps according to claim 4, characterized in that: Universal wheels (712) are installed at equal angles on the bottom end of the rotating platform (710), a gear ring (713) is installed on the outer wall of the rotating platform (710), one side of the gear ring (713) is meshed with a gear (714), the gear (714) is fixedly connected to the output shaft of the motor (715), and the motor (715) is fixedly installed on the top plate (702).

6. The electrolytic device for preparing electroplated alloy bumps according to claim 3, characterized in that: The clamping and fixing assembly (8) comprises a fixing block (801) fixedly mounted on the top of the transverse plate (704), with clamping grooves (802) symmetrically provided on both sides of the fixing block (801), a fixing cylinder (803) mounted on the bottom end of the bottom plate (708), the fixing cylinder (803) being sleeved on the outside of the fixing block (801), side cylinders (804) being symmetrically mounted on both sides of the fixing cylinder (803), the side cylinders (804) being connected to the fixing cylinder (803), and a clamping rod (805) being movably mounted inside the side cylinder (804).

7. The electrolytic device for preparing electroplated alloy bumps according to claim 6, characterized in that: A spring (806) is installed at one end of the clamping rod (805) away from the interior of the fixed cylinder (803), and one end of the spring (806) is fixedly connected to the inner wall of the end of the side cylinder (804). A magnetic block (807) is installed on the clamping rod (805), and an electromagnet (808) is installed on the inner wall of the end of the side cylinder (804). When the electromagnet (808) is energized, it generates a repulsive force on the magnetic block (807), so that the clamping rod (805) is clamped into the interior of the clamping slot (802).

Images