DFN1610 anti-deformation frame

Abstract

The invention discloses a DFN1610 anti-deformation framework, a base island, x-direction connecting ribs, y-direction connecting ribs, extending x-direction connecting ribs and extending y-direction connecting ribs are arranged on the DFN1610 framework, a pair of x-direction connecting ribs are transversely and symmetrically arranged relative to the base island, a pair of y-direction connecting ribs are longitudinally and symmetrically arranged relative to the base island, and a hollow structure is formed between the adjacent x-direction connecting rib and y-direction connecting rib; the pair of extending x-direction connecting ribs are transversely and symmetrically arranged in the hollow structure, one ends of the pair of extending x-direction connecting ribs are connected with the pair of x-direction connecting ribs, and the other ends of the pair of extending x-direction connecting ribs extend towards the middle of the hollow structure; the pair of extending y-direction connecting ribs is longitudinally and symmetrically arranged in the hollow structure, one ends of the pair of extending y-direction connecting ribs are connected with the pair of y-direction connecting ribs, and the other ends of the pair of extending y-direction connecting ribs extend towards the middle of the hollow structure. The invention relates to the technical field of semiconductor packaging, and can solve the problems that a DFN1610 frame is easy to deform and a chip floats in a routing process in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor packaging, and particularly relates to a DFN1610 anti-deformation frame. Background Art

[0002] Please refer to the attached Figure 1 and the attached Figure 2 As shown in the attached drawings, on a DFN1610 frame 1, there are a base island 2, x-direction connecting ribs 3, and y-direction connecting ribs 4. A pair of x-direction connecting ribs 3 are arranged symmetrically horizontally with respect to the base island 2, and a pair of y-direction connecting ribs 4 are arranged symmetrically vertically with respect to the base island 2. A hollow structure 10 is formed between a pair of x-direction connecting ribs 3 and a pair of y-direction connecting ribs 4. During the process of WB (Wire Bonding) wire bonding on the DFN1610 frame 1, the DFN1610 frame 1 is placed on a base 5, and a pressure plate 6 is pressed down on the DFN1610 frame 1, and a bonding needle is pressed down to the chip on the base island 2 for wire bonding operation.

[0003] Since the x-direction connecting ribs 3 and the y-direction connecting ribs 4 are relatively short and have low strength, when the bonding needle is pressed down during wire bonding, the DFN1610 frame 1 is easily squeezed and deformed. After one wire is bonded and the bonding needle rises, the parts of the base island 2 that are far from the x-direction connecting ribs 3 and the y-direction connecting ribs 4 will warp upward under the reaction force of the base 5, and the chip will warp upward synchronously with the base island 2. During multiple wire bonding processes, the chip floats up and down, which easily causes spherical defects and poor soldering at the wire bonding parts of the chip. Therefore, it is necessary to provide a DFN1610 anti-deformation frame that can solve the problems of easy deformation of the DFN1610 frame and chip floating during the wire bonding process in the prior art. Summary of the Invention

[0004] The purpose of the present invention is to provide a DFN1610 anti-deformation frame that can solve the problems of easy deformation of the DFN1610 frame and chip floating during the wire bonding process in the prior art.

[0005] The present invention is implemented as follows:

[0006] A DFN1610 anti-deformation frame, on which there are a base island, x-direction connecting ribs, and y-direction connecting ribs. A pair of x-direction connecting ribs are arranged symmetrically horizontally with respect to the base island, and a pair of y-direction connecting ribs are arranged symmetrically vertically with respect to the base island. A cross-shaped hollow structure is formed between adjacent two x-direction connecting ribs and y-direction connecting ribs;

[0007] The DFN1610 frame described above is also provided with extended x-direction connecting ribs and extended y-direction connecting ribs; a pair of extended x-direction connecting ribs are symmetrically arranged horizontally within the hollow structure, and one end of each of the pair of extended x-direction connecting ribs is respectively connected to a pair of x-direction connecting ribs, and the other ends of the pair of extended x-direction connecting ribs extend towards the middle of the hollow structure; a pair of extended y-direction connecting ribs are symmetrically arranged vertically within the hollow structure, and one end of each of the pair of extended y-direction connecting ribs is respectively connected to a pair of y-direction connecting ribs, and the other ends of the pair of extended y-direction connecting ribs extend towards the middle of the hollow structure.

[0008] The extended x-direction connecting ribs are provided with the same width as the x-direction connecting ribs, and the extended x-direction connecting ribs are provided with the same width as the y-direction connecting ribs.

[0009] An operation gap is formed between the other ends of two adjacent extended x-direction connecting ribs and the other ends of the extended y-direction connecting ribs.

[0010] Open slots are formed at the other ends of two adjacent extended x-direction connecting ribs and the other ends of the extended y-direction connecting ribs, so that the operation gap is in a cross shape.

[0011] The open slots on the extended x-direction connecting ribs are arranged along the central axis of the extended x-direction connecting ribs, and the open slots on the extended y-direction connecting ribs are arranged along the central axis of the extended y-direction connecting ribs.

[0012] The pair of x-direction connecting ribs and the pair of y-direction connecting ribs are connected into an integral structure through a pair of extended x-direction connecting ribs and a pair of extended y-direction connecting ribs.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] Since the present invention is provided with extended x-direction connecting ribs and extended y-direction connecting ribs, the area of the connecting ribs on the DFN1610 frame is increased, and the independently arranged x-direction connecting ribs and y-direction connecting ribs in the prior art are connected into an integral body, enhancing the integrity and structural strength of the connecting ribs on the DFN1610 frame, thereby greatly improving the strength of the DFN1610 frame, avoiding the compression deformation of the DFN1610 frame during the wire bonding process, and also avoiding the situation of the base island warping upwards, ensuring that the base island closely adheres to the base after the pressing plate is pressed, solving the problem of chip floating, reducing the risks of spherical defects and poor soldering, and improving the operation quality of the DFN1610 frame. Description of the Drawings

[0015] Figure 1 is the front view of the prior art DFN1610 frame;

[0016] Figure 2 is the side view of the prior art DFN1610 frame.

[0017] Figure 3 is the front view of the DFN1610 anti-deformation frame of the present invention;

[0018] Figure 4 It is the press-fitting top view of the DFN1610 anti-deformation frame of the present invention.

[0019] In the figure, 1 is the DFN1610 frame, 2 is the base island, 3 is the x-direction connecting rib, 4 is the y-direction connecting rib, 5 is the base, 6 is the pressing plate, 7 is the extended x-direction connecting rib, 8 is the extended y-direction connecting rib, 9 is the operation gap, and 10 is the hollow structure. Specific embodiments

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Please refer to the attached Figure 3 and the attached Figure 4 , a DFN1610 anti-deformation frame, on which a base island 2, an x-direction connecting rib 3 and a y-direction connecting rib 4 are provided. A pair of x-direction connecting ribs 3 are arranged symmetrically horizontally with respect to the base island 2, and a pair of y-direction connecting ribs 4 are arranged symmetrically vertically with respect to the base island 2. A cross-shaped hollow structure is formed between two adjacent x-direction connecting ribs 3 and y-direction connecting ribs 4.

[0022] The DFN1610 frame 1 is further provided with an extended x-direction connecting rib 7 and an extended y-direction connecting rib 8; a pair of extended x-direction connecting ribs 7 are arranged symmetrically horizontally in the hollow structure, and one end of each of the pair of extended x-direction connecting ribs 7 is respectively connected to a pair of x-direction connecting ribs 3, and the other ends of the pair of extended x-direction connecting ribs 7 extend towards the middle of the hollow structure; a pair of extended y-direction connecting ribs 8 are arranged symmetrically vertically in the hollow structure, and one end of each of the pair of extended y-direction connecting ribs 8 is respectively connected to a pair of y-direction connecting ribs 4, and the other ends of the pair of extended y-direction connecting ribs 8 extend towards the middle of the hollow structure.

[0023] By providing the extended x-direction connecting rib 7, the x-direction connecting rib 3 is extended, increasing the connecting rib length and area in the x direction, thereby increasing the anti-deformation performance of the DFN1610 frame 1 in the x direction; similarly, by providing the extended y-direction connecting rib 8, the y-direction connecting rib 4 is extended, increasing the connecting rib length and area in the y direction, thereby increasing the anti-deformation performance of the DFN1610 frame 1 in the y direction.

[0024] The present invention improves the overall strength of the DFN1610 frame 1, thereby avoiding the situation of the DFN1610 frame 1 being deformed under pressure during the wire bonding process, and at the same time can also avoid the problem of the base island 2 warping upwards, making the base island 2 closely attached to the base 5 after being pressed by the pressing plate 6, thereby solving the problem of the chips on the base island 2 floating during the wire bonding process, avoiding the risks of spherical defects and poor soldering, and effectively improving the operation quality of the DFN1610 frame 1.

[0025] For other models of semiconductor chip frames with similar structures, the structure of the present invention can also be used to strengthen and improve their frame structures, which has good adaptability and versatility, and the structure is simple and easy to process and manufacture.

[0026] Please refer to the appendix Figure 3 , the extended x-direction connecting rib 7 is set to be the same width as the x-direction connecting rib 3, and the extended x-direction connecting rib 7 is set to be the same width as the y-direction connecting rib 4.

[0027] The width of the x-direction connecting rib 3 and the width of the y-direction connecting rib 4 on the DFN1610 frame 1 are usually 0.180 mm. Preferably, the widths of the extended x-direction connecting rib 7 and the extended y-direction connecting rib 8 are also designed to be 0.180 mm.

[0028] Please refer to the appendix Figure 3 and the appendix Figure 4 , an operation gap 9 is formed between the other ends of two adjacent extended x-direction connecting ribs 7 and the other ends of the extended y-direction connecting ribs 8.

[0029] The operation gap 9 can leave necessary operation space for operations such as wire bonding, and is also convenient for discharging the air between the DFN1610 frame 1 and the base 5 when the DFN1610 frame 1 is pressed on the base 5, ensuring the close fit of the DFN1610 frame 1 and the base island 2 on the base 5 during the wire bonding process.

[0030] Please refer to the appendix Figure 3 and the appendix Figure 4 , an opening groove is formed between the other ends of two adjacent extended x-direction connecting ribs 7 and the other ends of the extended y-direction connecting ribs 8, so that the operation gap 9 is in a cross shape.

[0031] Preferably, the opening groove can be arranged at the end of the other end of the extended x-direction connecting rib 7 along the length direction of the extended x-direction connecting rib 7. The width of the opening groove on the extended x-direction connecting rib 7 is smaller than the width of the extended x-direction connecting rib 7. The opening groove can be arranged at the end of the other end of the extended y-direction connecting rib 8 along the length direction of the extended y-direction connecting rib 8. The width of the opening groove on the extended y-direction connecting rib 8 is smaller than the width of the extended y-direction connecting rib 8. The four opening grooves are connected to make the operation gap 9 form a cross-shaped structure. By setting the opening groove with a smaller width, it is possible to connect the other ends of two adjacent extended x-direction connecting ribs 7 and the other ends of the extended y-direction connecting ribs 8 while leaving the operation gap 9.

[0032] The shape and size of the operation gap 9 can also be adjusted adaptively according to actual operation requirements.

[0033] Please refer to the appendix Figure 3 and the appendix Figure 4The opening grooves on the extending x-direction connecting ribs 7 are arranged along the central axis of the extending x-direction connecting ribs 7, and the opening grooves on the extending y-direction connecting ribs 8 are arranged along the central axis of the extending y-direction connecting ribs 8, so that the forces on the extending x-direction connecting ribs 7 and the extending y-direction connecting ribs 8 at the operation gap 9 during the wire bonding process are uniform, further avoiding the deformation risk of the DFN1610 frame 1.

[0034] Please refer to the appendix Figure 3 and the appendix Figure 4 The pair of x-direction connecting ribs 3 and the pair of y-direction connecting ribs 4 are connected into an integral structure by a pair of extending x-direction connecting ribs 7 and a pair of extending y-direction connecting ribs 8.

[0035] Please refer to the appendix Figure 3 and the appendix Figure 4 By arranging a pair of extending x-direction connecting ribs 7 and a pair of extending y-direction connecting ribs 8, the pair of x-direction connecting ribs 3 and the pair of y-direction connecting ribs 4 that are independently arranged in the prior art are connected into a whole, greatly increasing the area of the connecting ribs on the DFN1610 frame 1, thereby enhancing the integrity and structural strength of the connecting ribs, playing a role in preventing the DFN1610 frame 1 from being deformed under pressure during the wire bonding process, and at the same time avoiding the situation of the base island 2 and the chips thereon floating up and down during the wire bonding process, thereby reducing the risks of spherical defects and false soldering, and achieving the purpose of improving the operation quality of the DFN1610 frame.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A DFN1610 anti-deformation frame, wherein a base island (2), x-direction connecting ribs (3) and y-direction connecting ribs (4) are provided on the DFN1610 frame (1), a pair of x-direction connecting ribs (3) are arranged symmetrically in the transverse direction with respect to the base island (2), a pair of y-direction connecting ribs (4) are arranged symmetrically in the longitudinal direction with respect to the base island (2), and a cross-shaped hollow structure is formed between two adjacent x-direction connecting ribs (3) and y-direction connecting ribs (4); Its characteristics are: The DFN1610 frame (1) is further provided with an extended x-direction connecting rib (7) and an extended y-direction connecting rib (8); a pair of extended x-direction connecting ribs (7) are arranged symmetrically in the horizontal direction in the hollow structure, and one end of the pair of extended x-direction connecting ribs (7) is respectively connected to the pair of x-direction connecting ribs (3), and the other end of the pair of extended x-direction connecting ribs (7) extends toward the middle of the hollow structure; a pair of extended y-direction connecting ribs (8) are arranged symmetrically in the vertical direction in the hollow structure, and one end of the pair of extended y-direction connecting ribs (8) is respectively connected to the pair of y-direction connecting ribs (4), and the other end of the pair of extended y-direction connecting ribs (8) extends toward the middle of the hollow structure.

2. The DFN1610 anti-deformation frame according to claim 1 is characterized in that: The extended x-direction connecting rib (7) and the x-direction connecting rib (3) are arranged to have the same width, and the extended x-direction connecting rib (7) and the y-direction connecting rib (4) are arranged to have the same width.

3. The DFN1610 anti-deformation frame according to claim 1 or 2, characterized in that: An operating gap (9) is formed between the other ends of two adjacent connecting ribs (7) extending in the x-direction and the other ends of the connecting ribs (8) extending in the y-direction.

4. The DFN1610 anti-deformation frame according to claim 3 is characterized in that: The other ends of the two adjacent extending x-direction connecting ribs (7) and the other ends of the extending y-direction connecting ribs (8) are both formed with open grooves, so that the operating gap (9) is in a cross shape.

5. The DFN1610 anti-deformation frame according to claim 4 is characterized in that: The open groove on the extended x-direction connecting rib (7) is arranged along the central axis of the extended x-direction connecting rib (7), and the open groove on the extended y-direction connecting rib (8) is arranged along the central axis of the extended y-direction connecting rib (8).

6. The DFN1610 anti-deformation frame according to claim 1 is characterized in that: The pair of x-direction connecting bars (3) and the pair of y-direction connecting bars (4) are connected into an integrated structure via a pair of extended x-direction connecting bars (7) and a pair of extended y-direction connecting bars (8).

Images