Miniaturized LTCC / HTCC tube shell material taking structure and method

Abstract

The invention relates to a miniaturized LTCC / HTCC tube shell material taking structure and method, the material taking structure comprises an auxiliary separation layer green tape, the auxiliary separation layer green tape comprises a semi-cutting layer and a thick layer, and the semi-cutting layer is connected with a to-be-stripped waste material area of a semi-finished product green tape through a printing glue net. The contact parts of the plurality of small-sized ceramic tube shells on the semi-finished green ceramic tape lamination and the to-be-stripped waste area parts on the periphery of the small-sized ceramic tube shells are green cutting positions; and during material taking, the semi-finished green tape is cut to be above the thick layer along the green cutting position. An auxiliary separation layer green tape is arranged below a semi-finished product green tape lamination, and a glue printing net is arranged on the auxiliary separation layer green tape according to the position of a waste material, so that no glue is printed between a miniaturized ceramic tube shell and the auxiliary separation layer green tape, and after green cutting, only a waste material area to be stripped is adhered to the surface of the auxiliary separation layer green tape; and rapid and high-quality separation of the small-sized ceramic tube shell and the waste materials is realized. The raw ceramic material taking operation process can be simplified to the greatest extent, and product pollution caused by manual material taking can be avoided while the product size requirement is met.

Description

Technical Field

[0001] This invention relates to the field of LTCC / HTCC ceramic component manufacturing technology, and in particular to a miniaturized LTCC / HTCC tube shell material handling structure and method. Background Technology

[0002] Low-temperature / high-temperature co-fired ceramics (LTCC / HTCC) offer excellent overall performance, combining high mechanical strength, high thermal conductivity, excellent chemical stability, and high wiring density. Therefore, they are often used in demanding ceramic package and ceramic package substrate applications to achieve chip mounting, protection, and interconnection.

[0003] As electronic components become smaller, the size of the matching LTCC / HTCC ceramic parts is also constantly shrinking. The eight-inch green ceramic process can arrange hundreds or thousands of ceramic part units on a 203mm*203mm green ceramic sheet for parallel manufacturing.

[0004] Currently, the arrangement of green ceramic arrays for small-sized LTCC / HTCC ceramic parts is selected based on factors such as the product's cavity structure characteristics, dimensional accuracy requirements, and whether it is easy to break into pieces after sintering. This arrangement is categorized into close-packed, partially close-packed, and spaced-out arrangements. For small-sized LTCC / HTCC ceramic parts with high dimensional accuracy requirements and that are not easily broken into pieces after sintering, spaced-out arrangements and independent unit sintering methods are preferable. This allows for precise control of the ceramic part's size through green cutting and prevents breakage, defects, and burrs.

[0005] For sheet-like green ceramic tiles arranged at intervals, efficiently separating product units (ceramic tube shells) from process waste is a technical challenge. Simple and primitive peeling methods are prone to metallization contamination, deformation, and other defects, and are extremely inefficient. The primitive peeling method requires one hand to hold the ceramic strip while the other hand (wearing finger cots) peels away the waste material from the edges of the entire strip. Each product removed requires peeling away four pieces of waste material surrounding it. Simultaneously, the finger cots must be constantly monitored for contamination and replaced promptly if necessary. In general, the efficiency of green ceramic material removal and the yield rate are crucial to the manufacturing of products at the green ceramic stage, yet current research in this industry on the separation of products from process waste is limited. Summary of the Invention

[0006] To address the issues of low separation efficiency between miniaturized ceramic tube shells and waste materials in existing technologies, and the ease with which products become contaminated, this invention provides a miniaturized LTCC / HTCC tube shell material handling structure, including an auxiliary separation layer green ceramic belt. The auxiliary separation layer green ceramic belt and the waste material area to be separated from the semi-finished green ceramic belt are connected by a printing screen.

[0007] The contact points between the miniaturized ceramic tube shells on the semi-finished green ceramic strip and the waste area to be stripped are the raw cutting positions. When taking materials, the material is cut from the semi-finished green ceramic strip to the auxiliary separation layer green ceramic strip along the raw cutting position.

[0008] Furthermore, the auxiliary separation layer green ceramic belt includes a half-cut layer and a thickened layer; when taking material, it is cut from the half-finished green ceramic belt along the green-cut position to above the thickened layer.

[0009] Furthermore, the thickness of the half-cut layer is 0.2 mm.

[0010] Furthermore, the waste area to be stripped includes several waste units, and the printing screen includes several printing units corresponding to the waste units; each waste unit is disposed around a single miniaturized ceramic tube shell, and the waste unit is connected to the half-cut layer through the printing unit.

[0011] Furthermore, a glue-free filling area is provided between the semi-finished green ceramic tape stack and the auxiliary separation layer green ceramic tape, and the glue-free filling area is located around the inner and outer diameters of a single printing unit.

[0012] Furthermore, the width of the glue-free filling area d It is 0.3mm.

[0013] On the other hand, the present invention also provides a method for miniaturized LTCC / HTCC casing material handling, comprising the following steps: Step 1: Arrange several miniaturized ceramic tube shell positions in a non-close-packed manner on several layers of green ceramic tape and perform micro-hole processing. After the previous process, a semi-finished green ceramic tape stack before the green cutting process is obtained. Step 2: Perform microporous fabrication on the green ceramic tape in the auxiliary separation layer; Step 3: Set printing units on the green ceramic belt of the auxiliary separation layer according to the position of several waste units, and several printing units form a printing mesh; Step 4: Stack the semi-finished green ceramic tape with the auxiliary separation layer green ceramic tape within the specified time. Step 5: Place a heavy object on top and let it stand still; Step 6: Apply a heat-sensitive film to the side of the auxiliary separation layer green ceramic tape facing the green cutting table. Use the green cutting table to perform a single-sided half-cut along the outline of the miniaturized ceramic tube shell to separate the miniaturized ceramic tube shell and the waste unit around it. The green cutting thickness is the sum of the thickness of the waste unit and the thickness of the half-cut layer. Step 7: After cooling to room temperature, remove several miniaturized ceramic tube shells and sinter them.

[0014] Furthermore, the specified time for step 4 is 3 minutes.

[0015] Furthermore, the weight in step 5 is a steel plate.

[0016] Furthermore, the settling time in step 5 is 15 minutes.

[0017] Compared with the prior art, this invention has the following beneficial effects: By setting an auxiliary separation layer of green ceramic belt under the stack of semi-finished green ceramic belts, and placing an ink-printing screen on the auxiliary separation layer of green ceramic belt according to the waste location, since there is no ink-printing unit between the miniaturized ceramic tube shell and the auxiliary separation layer of green ceramic belt, after green cutting, only the waste area to be peeled off is separated from the waste area by the ink-printing screen adhering to the surface of the auxiliary separation layer of green ceramic belt, thus achieving rapid and high-quality separation of the miniaturized ceramic tube shell and the waste area to be peeled off. Through the rational design of the pattern on the ink-printing screen, the green ceramic material handling process can be simplified, reducing the material handling time from three hours to fifteen minutes; at the same time, it can meet the product size requirements while avoiding product contamination caused by manual material handling, improving the product qualification rate, reducing the scrap rate, and thus achieving the effect of reducing costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram showing the arrangement of several miniaturized ceramic tube shells on the stacked sheets of the semi-finished green ceramic belt of the present invention. Figure 2 To and Figure 1 A schematic diagram of the printing screen pattern on the auxiliary separation layer green ceramic belt at the corresponding position; Figure 3 This is a schematic diagram of the stacking of a single miniaturized ceramic tube shell and an auxiliary separation layer green ceramic belt according to the present invention; Figure 4 This is a schematic diagram of the raw cutting of a single miniaturized ceramic tube shell and waste unit according to the present invention; Figure 5 This is a top view of a single miniaturized ceramic tube shell and the waste unit surrounding it, according to the present invention. Figure 6 This is a flowchart of a miniaturized LTCC / HTCC tube shell feeding method according to the present invention; In the diagram: 1. Auxiliary separation layer green ceramic belt; 2. Green ceramic belt; 3. Glue-free filling area; 4. Miniaturized ceramic tube shell; 5. Waste area to be peeled off; 6. Glue printing unit; 7. Half-cut layer; 8. Thick layer; 9. Glue printing screen; 10. Waste unit. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The terms "upper," "lower," "front," "rear," "top," "bottom," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or part referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be understood that such data can be interchanged where appropriate for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0021] Example 1 This invention provides a miniaturized LTCC / HTCC casing feeding structure, such as... Figure 1 ~as Figure 4 As shown, it includes an auxiliary separation layer green ceramic belt 1, and the auxiliary separation layer green ceramic belt 1 and the waste area 5 to be peeled off of the semi-finished green ceramic belt are connected by a printing screen 9. The contact point between the several miniaturized ceramic tube shells 4 on the semi-finished green ceramic belt and the waste area 5 to be stripped is the raw cutting position; When taking materials, cut along the raw cutting position from the semi-finished raw ceramic belt to the auxiliary separation layer raw ceramic belt 1.

[0022] It should be noted that the semi-finished green ceramic tape stack is a conventional green ceramic tape stack product, which is made by stacking and laminating several layers of green ceramic tape 2; the semi-finished green ceramic tape stack includes several miniaturized ceramic tube shells 4.

[0023] When it is necessary to completely remove the miniaturized ceramic tube shell 4, use a green cutting table to cut along the outline of the miniaturized ceramic tube shell 4 to the bottom of the auxiliary separation layer green ceramic belt 1. Since there is no printing unit 6 between a single miniaturized ceramic tube shell 4 and the auxiliary separation layer green ceramic belt 1, after the cutting is completed, only the waste area to be peeled off 5 is separated from the waste area to be peeled off quickly and with high quality because the printing mesh 9 adheres to the surface of the auxiliary separation layer green ceramic belt 1. There is no risk of contamination from manual material handling.

[0024] Example 2 Although the miniaturized ceramic tube shell 4 in Example 1 can be quickly separated from the waste, it is still mixed with the cutting waste (including the auxiliary separation layer green ceramic belt 1 at the bottom of a single miniaturized ceramic tube shell 4 and the waste unit 10 and auxiliary separation layer green ceramic belt 1 that are adhered together on both sides). Therefore, it is still necessary to pick out a number of miniaturized ceramic tube shell 4 products from the many cut pieces.

[0025] To improve material handling efficiency, the auxiliary separation layer green ceramic belt 1 includes a half-cut layer 7 and a thickened layer 8; during material handling, the green ceramic belt is cut along the green-cut position to a depth above the thickened layer 8. In a preferred embodiment, the thickness of the half-cut layer 7 is 0.2 mm.

[0026] like Figure 1 ~as Figure 4 As shown, the waste area 5 to be stripped includes several waste units 10, and the printing screen 9 includes several printing units 6 corresponding to the waste units 10; a single waste unit 10 is disposed around a single miniaturized ceramic tube shell 4, and for a single miniaturized ceramic tube shell 4, the waste units 10 around it are connected to the half-cut layer 7 through the printing units 6.

[0027] When it is necessary to completely remove the miniaturized ceramic tube shell 4, a green cutting table is used to perform a single-sided half-cut along the outline of the miniaturized ceramic tube shell 4 until a thick layer 8 remains. Since there is no printing unit 6 between the miniaturized ceramic tube shell 4 and the half-cut layer 7, after the half-cut, only the waste area 5 to be peeled off is affected by the printing mesh 9 adhering to the surface of the half-cut layer 7. At the same time, since the bottom of the half-cut layer 7 does not detach from the thick layer 8, only a few miniaturized ceramic tube shell 4 products can be separated from the pre-assembled semi-finished green ceramic tape stack and the auxiliary separation layer green ceramic tape 1, achieving fast and high-quality material removal.

[0028] like Figure 5 As shown, to prevent the adhesive from the printing unit 6 from overflowing onto the miniaturized ceramic tube shell 4, a glue-free filling area 3 is provided between the semi-finished green ceramic tape stack and the auxiliary separation layer green ceramic tape 1. The inner and outer diameters of each printing unit 6 are also surrounded by glue-free filling areas 3. It should be noted that... Figure 5 In the diagram, the gray area represents waste unit 10, the horizontal dashed line represents the location of printing unit 6, and the diagonal line represents the glue-free filling area 3. Generally, the width of the glue-free filling area 3... d It is 0.3mm.

[0029] In this embodiment, Figure 1 and Figure 2 The semi-finished green ceramic tape stack and the auxiliary separation layer green ceramic tape 1 are both 8 inches in size. The semi-finished green ceramic tape stack is made of 4 layers of green ceramic tape 2. Figure 1 The individual dimensions of several miniaturized ceramic tube shells 4 are 2mm*2mm. Figure 1 The white square in the middle is the miniaturized ceramic tube shell 4. Figure 2 The black line in the middle is the printing screen 9 formed by the printing unit 6 on the auxiliary separation layer green ceramic belt 1, and its position corresponds to Figure 1 Location 5 in the waste area to be stripped. For ease of description, the auxiliary separation layer green ceramic belt 1 is layer L0, and the semi-finished green ceramic belt stacks are layered from bottom to top as layers L1, L2, L3 and L4.

[0030] like Figure 6 As shown, the present invention also provides a method for miniaturizing LTCC / HTCC casing material handling, comprising the following steps: Step 1: On several layers of green ceramic strips 2, several miniaturized ceramic tube shells 4 are arranged in an array in a non-closed arrangement and micro-hole processing is performed. After the preceding process, a semi-finished green ceramic strip stack before the green cutting process is obtained.

[0031] Specifically, the preliminary processes for semi-finished green porcelain with stacked slabs include the following steps: S11: Several micropores are arranged on the green ceramic strips 2 of L1~L4 to form miniaturized ceramic tube shells 4. The micropores are processed and cleaned on each layer of green ceramic strips 2 using a mechanical punching machine. S12: Use a screen printing machine to fill the processed micropores with metal paste; S13: Use a screen printing machine to print the conductors on the contact surfaces of L1 and L2 layers respectively; S14: Stack and laminate the L1 and L2 layers; S15: Use a screen printing machine to print the side of layer L4 facing layer L3; S16: Stack and laminate layers L3 and L4; S17: Use laser equipment to process the central cavities of layers L3 and L4; S18: Use a screen printing machine to print adhesive on the side of layer L3 facing layer L2; S19: Stack the treated L3 and L4 layers with the treated L1 and L2 layers, seal them using a vacuum sealing machine and laminate them to obtain semi-finished green ceramic tape stacks.

[0032] Step 2: Perform microporous processing and cleaning on the auxiliary separation layer green ceramic belt 1.

[0033] Step 3: According to the positions of several waste units 10, printing units 6 are set on the auxiliary separation layer green ceramic belt 1, and printing units 6 around several miniaturized ceramic tube shells 4 form printing mesh 9.

[0034] Step 4: Stack the semi-finished green ceramic strips with the auxiliary separation layer green ceramic strip 1 within the specified time. Preferably, the specified time is 3 minutes.

[0035] Step 5: Place a weight on top and let it stand. In one embodiment, the weight is a steel plate; in this example, six steel plates are used, each weighing 500g. Preferably, the standing time is 15 minutes.

[0036] Step 6: Apply a heat-sensitive film to the side of the auxiliary separation layer green ceramic strip 1 facing the green cutting table. Use the green cutting table with a preheated temperature of 30-60℃ to perform a single-sided half-cut along the outline of the miniaturized ceramic tube shell 4 to separate the miniaturized ceramic tube shell 4 and the waste unit 10 around it. The green cutting thickness is the sum of the thickness of the waste unit 10 and the thickness of the half-cut layer 7.

[0037] Step 7: After cooling to room temperature, remove several miniaturized ceramic tube shells 4 and sinter them to obtain several finished miniaturized ceramic tube shells 4.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and all such improvements and modifications should be covered within the protection scope of the present invention.

Claims

1. A miniaturized LTCC / HTCC can structure, characterized in that The auxiliary separation layer green ceramic tape (1) is connected with the waste material area (5) to be peeled off of the semi-finished green ceramic tape through the printing glue net (9); The contact position of the plurality of miniaturized ceramic tube shells (4) on the semi-finished green ceramic tape laminates and the waste material area (5) to be peeled off is a green cutting position; When taking the material, the semi-finished green ceramic tape is cut along the green cutting position to the auxiliary separation layer green ceramic tape (1).

2. A miniaturized LTCC / HTCC tube shell material taking structure according to claim 1, characterized in that, The auxiliary separation layer green ceramic tape (1) includes a half-cut layer (7) and a thick layer (8); when taking the material, the semi-finished green ceramic tape is cut along the green cutting position to the thick layer (8) or above.

3. A miniaturized LTCC / HTCC tube shell material taking structure according to claim 2, characterized in that, The thickness of the half-cut layer (7) is 0.2 mm.

4. The miniaturized LTCC / HTCC tube shell material structure according to claim 2, characterized in that, The waste material area (5) to be peeled off includes a plurality of waste material units (10), and the printing glue net (9) includes a plurality of printing glue units (6) corresponding to the waste material units (10); a single waste material unit (10) is arranged around a single miniaturized ceramic tube shell (4), and the waste material unit (10) is connected with the half-cut layer (7) through the printing glue unit (6).

5. A miniaturized LTCC / HTCC tube shell material structure according to claim 4, characterized in that A glue-free filling area (3) is arranged between the semi-finished green ceramic tape laminates and the auxiliary separation layer green ceramic tape (1), and the inner diameter and outer diameter positions of a single printing glue unit (6) are all the glue-free filling area (3).

6. A miniaturized LTCC / HTCC tube shell material structure according to claim 5, characterized in that Width of the glue-free filler area (3) d It is 0.3mm.

7. A method according to any one of claims 1 to 6, wherein the LTCC / HTCC package is miniaturized. The method comprises the following steps: Step 1: arraying a plurality of miniaturized ceramic tube shells (4) on a plurality of layers of green ceramic tapes (2) according to a non-close-packed mode and performing micro-hole processing to obtain semi-finished green ceramic tape laminates before green cutting; Step 2: performing micro-hole processing on the auxiliary separation layer green ceramic tape (1); Step 3: arranging printing glue units (6) on the auxiliary separation layer green ceramic tape (1) according to the positions of a plurality of waste material units (10), and forming a printing glue net (9) from a plurality of printing glue units (6); Step 4: laminating the semi-finished green ceramic tape laminates and the auxiliary separation layer green ceramic tape (1) within a specified time; Step 5: placing a heavy object and standing still; Step 6: pasting a thermal sensitive film on the side of the auxiliary separation layer green ceramic tape (1) facing the green cutting table, and using the green cutting table to perform single-sided half-cutting along the contour line of the miniaturized ceramic tube shell (4) to separate the miniaturized ceramic tube shell (4) and the waste material unit (10) therearound, and the green cutting thickness is the sum of the thickness of the waste material unit (10) and the thickness of the half-cut layer (7); Step 7: taking out a plurality of miniaturized ceramic tube shells (4) after cooling to room temperature and sintering.

8. A method according to claim 7, wherein the LTCC / HTCC tube is a miniaturized LTCC / HTCC tube. The specified time in step 4 is 3 minutes.

9. The method of claim 7, wherein the LTCC / HTCC package is miniaturized. The heavy object in step 5 is a steel plate.

10. The method of claim 7, wherein the LTCC / HTCC package is miniaturized. The standing time in step 5 is 15 minutes.

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