Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of functional ceramic backplane

A technology of functional ceramics and ceramics, applied in electrical equipment shell/cabinet/drawer, cabinet/box/drawer parts, layered products, etc., can solve the problems of low strength, easy to be oxidized, increase cost, etc. Achieve the effect of reducing the probability of drop damage, excellent electrical conductivity, and good shock resistance

Active Publication Date: 2022-05-03
GOERTEK INC
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The utility model patent with the patent application number 200720107762.7 discloses a LTCC multilayer ceramic antenna. The ceramic antenna is fired with LTCC (Low Temperature Co-fired Ceramic) technology, and the sintering temperature is between 850°C and 1100°C. The strength of low-temperature co-fired ceramics is very low, resulting in insufficient density of ceramic materials and metal materials, and does not have the high strength, high wear resistance and high polish required by appearance parts
[0004] The invention patent with the patent application number 201510777195.5 discloses a preparation method of a functional mobile phone backplane. In order to increase the sintering temperature of the metal, the invention patent selects platinum slurry, ruthenium slurry, rhodium slurry and other precious metals with higher sintering temperatures. Materials are sintered in an oxidizing environment around 1500°C to achieve high-temperature co-firing of ceramic materials and metal materials, but the use of precious metal materials will greatly increase the cost, and the sintering of the used precious metal materials in an oxidizing environment is easy to be destroyed. Oxidation, resulting in a reduction in the performance of the functional ceramic back cover

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of functional ceramic backplane
  • Preparation method of functional ceramic backplane
  • Preparation method of functional ceramic backplane

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] The ceramic back plate prepared by the preparation method provided by the present invention can be applied to the back cover of electronic products such as mobile phones, tablet computers, and smart wearable devices.

[0040] figure 1 The flow chart of the preparation method of the functional ceramic backplane according to the present invention is shown.

[0041] Such as figure 1 As shown, the preparation method of the functional ceramic backboard provided by the present invention includes:

[0042] Step 100: putting the ceramic green body into a degreasing furnace for degreasing, and then putting the degreased ceramic green body into a sintering furnace for sintering to form a ceramic blank.

[0043] In the present invention, the ceramic green body is used to make ceramic sheets, and after the ceramic sheets are processed through a series of processes, each ceramic sheet is finally bonded together to form a ceramic back plate.

[0044] Making ceramic green body can ...

Embodiment 1

[0090] Step a: Take two zirconia green bodies with a thickness of 0.4mm and 1mm prepared by the tape casting method and put them into a degreasing furnace for degreasing, and then put the degreased two ceramic green bodies into a sintering furnace for sintering, Two ceramic blanks are formed.

[0091] The reason for the difference in the thickness of the two zirconia green bodies is that the zirconia green body with a thickness of 1 mm finally forms the appearance surface of the functional ceramic back plate to ensure the better strength of the functional ceramic back plate, while the 0.4 mm thick zirconia green body , to reduce the thickness inside the functional ceramic backplane, thereby reducing the overall thickness of the functional ceramic backplane.

[0092] The thicknesses of the ceramic blanks formed after the degreasing process and the sintering process are 0.2mm and 0.5mm respectively.

[0093] Step b: Perform plane grinding and polishing on the two ceramic blanks...

Embodiment 2

[0100] Step (1): Take three alumina ceramic green bodies with thicknesses of 0.25mm, 0.25mm and 0.70mm prepared by sol-gel process.

[0101] After the degreasing process and the sintering process, the thicknesses of the three ceramic blanks formed are 0.1 mm, 0.1 mm, and 0.3 mm, respectively.

[0102]Step (2): Three ceramic blanks are formed into three ceramic sheets through a plane grinding and polishing process.

[0103] Step (3): The circuit, the antenna assembly and the NFC module are respectively printed on the surfaces of the three ceramic sheets by screen printing, and the antenna and the NFC module are respectively connected to the inside of the product through the holes on the respective ceramic sheets.

[0104] The circuit, antenna assembly and NFC module are all made of copper paste.

[0105] Step (4): three ceramic sheets of printed functional circuits are placed in an atmosphere furnace for sintering.

[0106] The sintering process is as follows: first heat the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention provides a functional ceramic back plate and a preparation method thereof, wherein the method includes: step 110: putting the ceramic green body into a degreasing furnace for degreasing, and then putting the degreased ceramic green body into a sintering furnace for sintering, Forming ceramic blanks; step 120: grinding the ceramic blanks to form ceramic sheets, and printing functional circuits on the ceramic sheets; step 130: first sintering the ceramic sheets printed with functional circuits, and then sintering the sintered ceramic sheets according to a preset order Bonding is performed to form a ceramic backplane; or, firstly, ceramic sheets printed with functional circuits are bonded according to a preset sequence, and then the bonded ceramic sheets are sintered as a whole to form a ceramic backplane. The present invention can get rid of the restriction on the choice of metal materials in the process of making the ceramic back plate, thereby reducing the cost, and adopting the step-by-step sintering method can avoid the metal materials from being oxidized.

Description

technical field [0001] The present invention relates to the technical field of functional backplanes, and more specifically, to a functional ceramic backplane and a preparation method thereof. Background technique [0002] With the rapid development of 3C electronic products, the market has higher and higher requirements for the functions and performance of mobile phones, tablet computers and smart wearable products, such as the appearance quality, mechanical properties and backplane performance of the products. The functional ceramic backplane is a composite part with ceramic as the appearance part and metal material as the functional structural material. Ceramic and metal are two materials with different properties. The sintering temperature and sintering atmosphere of the two are different. It is difficult for the two materials to be simultaneously sintering. For example, zirconia ceramics are sintered in atmospheric conditions around 1500°C, while copper metals with goo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H05K5/02C04B35/64C04B35/638C04B35/48C04B35/10B32B9/04B32B9/00B32B7/12
CPCH05K5/0217C04B35/10C04B35/48C04B35/638C04B35/64B32B7/12B32B9/005B32B9/041C04B2235/6567C04B2235/667C04B2235/661
Inventor 张法亮魏文滨毛咏发许洋洋俞胜平
Owner GOERTEK INC