CN102573350A

CN102573350A - Shell with color and manufacturing method thereof as well as electronic device

Info

Publication number: CN102573350A
Application number: CN2010106028106A
Authority: CN
Inventors: 王仲培; 廖名扬
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2010-12-23
Filing date: 2010-12-23
Publication date: 2012-07-11

Abstract

The invention relates to a shell with colors and a manufacturing method thereof. The shell comprises a substrate, a chromium nitride layer and a color layer, wherein the chromium nitride layer and the color layer are sequentially stacked on the surface of the substrate. The color layer is formed by doping chromium and titanium. In the in a CIE LAB color system, the L coordinate of a chromaticity region presented by the color layer is in the range of 68.82 to 69.82, the a coordinate of the chromaticity region is in the range of minus 4.93 to minus 3.93, the b coordinate of the chromaticity region is in the range of minus 12.12 to 11.12. The shell has good abrasion performance and high aesthetic degree. The invention also relates to an electronic device comprising the shell.

Description

Colorful housing and preparation method thereof, electronic installation

Technical field

The present invention relates to the plated film field, relate in particular to a kind of housing and preparation method thereof with specific color, with comprise the electronic installation of this housing.

Background technology

Along with the rapid evolution of science and technology, various consumption electronic products, like mobile phone, computer, camera, development is rapidly.People have also proposed requirements at the higher level pursuing the diversified while of product function to its outward appearance, and the electronic product with colored shell arises at the historic moment.

This colour shell is coated with rete through coating technique in the housing base surface usually and processes.For reaching wear-resisting purpose, this rete needs quite hard.But, because of the difference of rerum naturas such as the lattice structure and the coefficient of expansion, be prone to cause that this rete is not good in the adhesive force of this housing base between this rete and this housing base, come off from this housing base.

Summary of the invention

Be to improve the resistance to wear of product aesthetic feeling and product casing, the invention provides a kind of colorful housing and preparation method thereof, with the electronic installation that comprises this housing.

This colorful housing comprises matrix and stacks gradually in this matrix surface chromium nitride layer and color layer.This color layer is by chromium and titanium doped forming; And the chroma areas that this color layer appears is in (the Commission internationale de l ' é clairag of Commission Internationale De L'Eclairage; CIE) the L coordinate of LAB colour system is between 68.82 to 69.82; The a coordinate is between-4.93 to-3.93, and the b coordinate is between-12.12 to-11.12.

The manufacture method of this colorful housing comprises: a matrix is provided; Utilizing reaction equation magnetron sputtering membrane process, is target with pure chromium, is reacting gas with nitrogen, forms chromium nitride film layer in this matrix surface; And utilize reaction equation magnetron sputtering membrane process; With pure chromium and pure titanium is target sputter altogether; Form a color layer in this chromium nitride film laminar surface; Between 68.82 to 69.82, a coordinate is between-4.93 to-3.93 in the L coordinate of CIE LAB colour system for the chroma areas that this color layer appears, and the b coordinate is between-12.12 to-11.12.

This electronic installation comprises aforementioned colorful housing.

Compared to being attached to this matrix, the power that mutually combines of this color layer and this chromium nitride layer is stronger, and the adhesion of this chromium nitride layer and this matrix is stronger.So this color layer is difficult for coming off from this matrix, the housing resistance to wear is good.In addition, this color layer has metal-like or ceramic texture, has improved the aesthetics of electronic installation.

Description of drawings

Fig. 1 is the structural representation of the electronic installation that provides of present technique scheme one execution mode, and this electronic installation comprises housing.

Fig. 2 is the cut-away view of housing shown in Figure 1 along the II-II line.

The main element symbol description

Housing 10

Matrix 1

Chromium nitride layer 2

Color layer 3

Embodiment

Colorful housing that the present technique scheme is provided below in conjunction with accompanying drawing and embodiment and preparation method thereof, with comprise that the electronic installation of this housing is elaborated.

This housing can be any electronic product shell.See also Fig. 1 and Fig. 2, the electronic installation that an embodiment of the present invention provides is a mobile phone, and it comprises colorful housing 10.The Vickers hardness of this housing 10 (Vickers hardness) is more than or equal to 500HV.Housing 10 comprises matrix 1, chromium nitride layer 2 and color layer 3.Wherein chromium nitride layer 2 is located at the outer surface of matrix 1, and color layer 3 is located at chromium nitride layer 2.

Matrix 1 material can be metal material, plastics or pottery, like stainless steel, Merlon, glass.Matrix 1 has outer surface to be plated (i.e. this surface, chromium nitride layer 2 place).This outer surface to be plated can comprise the zone with different surfaces structure, as comprises at least one smooth region.Color layer 3 is mixed by titanium and chromium and forms.Wherein, the adjustable ratio of titanium and chromium, when the content of titanium during well below the content of chromium, color layer 3 is tending towards appearing metal-like.When the content of titanium was higher than the content of chromium far away, color layer 3 was tending towards appearing ceramic texture.That is, through changing the ratio of titanium and chromium, color layer 3 can be by the metal-like gradual change to ceramic texture, or fades to metal-like by ceramic texture.The chroma areas that this color layer 3 appears is in (the Commission internationale de l ' é clairag of Commission Internationale De L'Eclairage; CIE) the L coordinate of LAB colour system is between 68.82 to 69.82; The a coordinate is between-4.93 to-3.93, and the b coordinate is between-12.12 to-11.12.

Compared to being attached to matrix 1, color layer 3 is stronger with the power that mutually combines of chromium nitride layer 2.So these housing 10 resistance to wears are good.In addition, this color layer 3 can have metal-like or ceramic texture, has improved the aesthetics of housing 10.

This housing 10 can be processed through following step:

At first, matrix 1 is provided.Alligatoring or polishing can be carried out in advance in the surface of this matrix 1, were beneficial to follow-up its surperficial chromium nitride layer 2 that is formed at and had high tack.

Secondly, form a chromium nitride layer 2 in matrix 1 surface.In this execution mode, adopt reaction equation magnetron sputtering embrane method on the surface of matrix 1, to form chromium nitride layer 2.For example, be target with pure chromium,, high vacuum feeds the nitrogen and the argon gas of proper proportion in being coated with the cabin; Like argon flow amount is 25sccm, and nitrogen flow is 58sccm, through electromagnetic field effect; This nitrogen and argon plasma formation plasma and the pure chromium target of accelerating impact; The material on pure chromium target surface is come out splash, and nitrogen-atoms combines with it, forms chromium nitride film layer in this matrix 1 surface.

Then, form a color layer 3 in chromium nitride layer 2 surfaces.In this execution mode, also adopt reaction equation magnetron sputtering embrane method to form color layer 3.At first, be target with pure chromium and pure titanium,, high vacuum feeds the oxygen and the argon gas of proper proportion in being coated with the cabin; Like oxygen flow is 300sccm, and argon flow amount is 200sccm, through electromagnetic field effect; This oxygen and argon plasmaization form pure chromium of plasma bombardment and pure titanium target respectively.Wherein, the power that this titanium target is bombarded is 3 kilowatts, and the power that this chromium target is bombarded is 25 kilowatts; The bias voltage of this reaction equation magnetron sputtering membrane process is between 180 to 220 volts, and temperature is between 180 to 220 degree Celsius, and the time was between 54 to 66 minutes; The revolution rotating speed of matrix 1 is 5 rotating speed per minutes (revolution per minute; Rpm), the rotation rotating speed of matrix is between-3.3 to-2.7rpm, that is the revolution direction is opposite with sense of rotation.

According to above-mentioned steps, through sputter can be in the required specific color layer 3 of chromium nitride layer 2 formation altogether.Through regulating the time scale that this titanium target and this chromium target are bombarded, the titanium in this color layer 3 of scalable and the ratio of chromium, thus make this color layer 3 fade to ceramic texture by metal-like, or fade to metal-like by ceramic texture.As previously mentioned; In this execution mode; The chroma areas that this color layer 3 appears is in (the Commission internationale del ' é clairag of Commission Internationale De L'Eclairage; CIE) the L coordinate of LAB colour system is between 68.82 to 69.82, and a coordinate is between-4.93 to-3.93, and the b coordinate is between-12.12 to-11.12.This for existing colorful housing the Color Range that can't provide.

It is understandable that those skilled in the art also can do other variation etc. and be used for design of the present invention in spirit of the present invention, as long as it does not depart from technique effect of the present invention and all can.These all should be included in the present invention's scope required for protection according to the variation that the present invention's spirit is done.

Claims

1. colorful housing; Comprise that matrix reaches chromium nitride layer and the color layer that is laminated in this matrix surface in regular turn; This color layer is by chromium and titanium doped forming; And between 68.82 to 69.82, a coordinate is between-4.93 to-3.93 in the L coordinate of CIE LAB colour system for the chroma areas that this color layer appears, and the b coordinate is between-12.12 to-11.12.

2. colorful housing as claimed in claim 1 is characterized in that, the material of this matrix is metal, plastics or pottery.

3. colorful housing as claimed in claim 1 is characterized in that the Vickers hardness of this housing is more than or equal to 500HV.

4. the manufacture method of a colorful housing comprises:

Step 1 a: matrix is provided;

Step 2: utilizing reaction equation magnetron sputtering membrane process, is target with pure chromium, is reacting gas with nitrogen, forms chromium nitride film layer in this matrix surface; And

Step 3: utilize reaction equation magnetron sputtering membrane process; With pure chromium and pure titanium is target sputter altogether; Form a color layer in this chromium nitride film laminar surface; Between 68.82 to 69.82, a coordinate is between-4.93 to-3.93 in the L coordinate of CIE LAB colour system for the chroma areas that this color layer appears, and the b coordinate is between-12.12 to-11.12.

5. the manufacture method of colorful housing as claimed in claim 4 is characterized in that, in the step 3, the power that this pure chromium target is bombarded is 25 kilowatts, and the power that this pure titanium target is bombarded is 3 kilowatts.

6. the manufacture method of colorful housing as claimed in claim 5 is characterized in that, in the step 3, the bias voltage of this reaction equation magnetron sputtering membrane process is between 180 to 220 volts.

7. the manufacture method of colorful housing as claimed in claim 6 is characterized in that, in the step 3, the temperature of this reaction equation magnetron sputtering membrane process is between 180 to 220 degree Celsius.

8. the manufacture method of colorful housing as claimed in claim 7 is characterized in that, in the step 3, the time of this reaction equation magnetron sputtering membrane process was between 54 to 66 fens bells.

9. the manufacture method of colorful housing as claimed in claim 8 is characterized in that, in the step 3; In said reaction equation magnetron sputtering membrane process; The revolution rotating speed of this matrix is 5 rotating speed per minute bells, and the rotation rotating speed is between 3.3 to 2.7 rotating speed per minute bells, and this sense of rotation and this revolution are in the opposite direction.

10. electronic installation, it comprises like each described colorful housing of claim 1 to 3.