1. A solder printing inspection apparatus for inspection of solder printed on a circuit board having a multiplicity of lands for mounting of electronic components, the solder printing inspection apparatus comprising:
an irradiation unit that irradiates a light on the circuit board;
an imaging unit that images the circuit board irradiated by the light;
a solder bridge detection unit that detects a solder bridge connecting at least two of the lands based on an image data imaged by the imaging unit;
a detection unit that extracts two lands, solder printing regions, or solder inspection frames having a farthest positional relationship among at least two lands contacting a single solder bridge or a solder printing region or solder inspection frame set corresponding to such lands;
a distance calculation unit that calculates, as a bridge distance, a minimum distance between the extracted two lands, solder printing regions, or solder inspection frames;
a distance determination unit that determines whether or not the bridge distance is within a permissible range; and
a severe defect processing unit that performs a certain severe defect processing when the bridge distance is determined not to be within the permissible range,
wherein the solder printing inspection apparatus further comprises a memory unit that remembers various types of setting data relating to manufacture of the circuit board, and the solder bridge detection unit, based on the setting data, sets a bridge inspection frame for detection of the solder bridge.
2. The solder printing inspection apparatus according to claim 1,
wherein the solder printing inspection apparatus further comprises a display unit that displays the detection counts of the solder bridges separately according to the bridge distance.
3. A solder printing system comprising the solder printing apparatus for printing of solder and the solder printing inspection apparatus according to claim 1,
wherein the severe defect processing unit outputs a certain malfunction signal to the solder printing apparatus as the severe defect processing; and
the solder printing apparatus performs a certain processing when the malfunction signal has been input.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for making a coated article, comprising:
providing a substrate;
forming a prefabricated layer on a surface of the substrate by vacuum sputtering, the prefabricated layer being a metal layer containing the metal element \u2018N\u2019, or an unsaturated oxide layer containing the metal element \u2018N\u2019 and the metal element \u2018M\u2019, the metal element \u2018N\u2019 being one or more metals selected from a group consisting of titanium, aluminum, and zinc, the metal element \u2018M\u2019 being calcium, barium, or a mixture of calcium and barium; and
thermal oxidizing the prefabricated layer to form a color layer on the substrate, the color layer being an oxide layer of the metal element \u2018N\u2019, or an oxide layer of the metal element \u2018N\u2019 and the metal element \u2018M\u2019; the color value of the color layer having a L* coordinate between 91 and 98, an a* coordinate between \u22121 and 1, and a b* coordinate between \u22122 and 2 in the CIE LAB color system.
2. The method as claimed in claim 1, wherein forming the prefabricated layer uses argon as a working gas, the argon having a flow rate of about 300 sccm-500 sccm; uses a metal target, the metal target being made of one or more metals selected from a group consisting of titanium, aluminum, and zinc, the metal target being applied with a power of about 2.5 kW-4.5 kW; conducting the sputtering of the prefabricated layer at a temperature of about 100\xb0 C.-300\xb0 C. and for about 1 hour-4 hours.
3. The method as claimed in claim 2, wherein the substrate has a bias voltage of about \u2212200 V to about 0 V during sputtering of the prefabricated layer.
4. The method as claimed in claim 1, wherein forming the prefabricated layer uses argon as a working gas, the argon having a flow rate of about 300 sccm-500 sccm; uses a metal target and a ceramic target, the metal target being made of one or more metals selected from a group consisting of titanium, aluminum, and zinc, the ceramic target being made of calcium oxide, barium oxide, or a mixture of calcium oxide and barium oxide, the metal target being applied with a power of about 2.5 kW-4.5 kW, the ceramic target being applied with a power of about 3 kW-4.5 kW; conducting the sputtering of the prefabricated layer at a temperature of about 100\xb0 C.-300\xb0 C. and for about 1 hour-4 hours.
5. The method as claimed in claim 4, wherein the substrate has a bias voltage of about \u2212200 V to about 0 V during sputtering of the prefabricated layer.
6. The method as claimed in claim 1, wherein thermal oxidizing the prefabricated layer is carried out at about 300\xb0 C.-600\xb0 C. using oxygen as a reaction gas having a flow rate of about 80 sccm-150 sccm for about 20 min-60 min.
7. The method as claimed in claim 1, wherein the color layer has a thickness of about 1 \u03bcm-2 \u03bcm.
8. The method as claimed in claim 1, wherein color value tested on the substrate has a L* coordinate between 85 and 90, an a* coordinate between \u22122 and 1, and a b* coordinate between \u22122 and 2 in the CIE LAB color system.
9. The method as claimed in claim 1, further comprising a step of pre-treating the substrate before forming the prefabricated layer.
10. The method as claimed in claim 1, wherein the substrate is transparent and made of glass.
11. A coated article, comprising:
a substrate; and
a color layer formed on a surface of the substrate, the color layer being an oxide layer of the metal element \u2018N\u2019, or an oxide layer of the metal element \u2018N\u2019 and the metal element \u2018M\u2019; the color value of the color layer having a L* coordinate between 91 and 98, an a* coordinate between \u22121 and 1, and a b* coordinate between \u22122 and 2 in the CIE LAB color system.
12. The coated article as claimed in claim 11, the color layer having a thickness of about 1 \u03bcm-2 \u03bcm.
13. The coated article as claimed in claim 11, the color layer being white.
14. The coated article as claimed in claim 11, wherein color value tested on the substrate has a L* coordinate between 85 and 90, an a* coordinate between \u22122 and 1, and a b* coordinate between \u22122 and 2 in the CIE LAB color system.
15. The coated article as claimed in claim 1, the substrate being transparent and made of glass.