1. A pallet loading system with billboard effect, comprising:
a pallet; and
a plurality of rectangular boxes having square end panels and four longitudinal panels;
wherein:
the boxes all have the same size and shape;
an image spans at least two sequential longitudinal panels of each box;
at least two boxes are stacked on the pallet to provide a billboard effect.
2. The system of claim 1 wherein at least two boxes in the stack are oriented so that vertically adjacent boxes have longitudinal panels oriented to jointly display the image to create the billboard effect.
3. The system of claim 1 wherein in a stack, rotation of the boxes orients longitudinal panels of vertically adjacent boxes to form a composite image spanning multiple boxes.
4. The system of claim 1 wherein the image on the boxes is a composite image formed of at least two subimages, with the two subimages located on sequential longitudinal panels of the boxes.
5. The system of claim 4 wherein rotation of vertically adjacent boxes in a stack forms the billboard effect by displaying the subimages on sequential longitudinal panels to form the composite image spanning the at least two boxes in the stack.
6. The system of claim 5 wherein the composite image spans all four longitudinal panels of each box, the composite image is formed of four subimages, and the four subimages are located on sequential longitudinal panels of each box.
7. The system of claim 1 wherein the image is formed on the boxes via litholaminate process.
8. The system of claim 1 wherein the image is formed on the boxes via an enwrapping sleeve about each boxes longitudinal panels.
9. The system of claim 1 wherein the boxes are stacked in multiple parallel stacks flush against one another, with each stack having boxes oriented in the same way forming the billboard effect.
10. A method of loading a pallet for billboard effect comprising:
placing a first rectangular box, having square end panels and four longitudinal rectangular panels, onto a pallet;
stacking a second, vertically adjacent rectangular box on top of the first box;
wherein:
each box has the same size and shape;
a single composite image spans at least two sequential longitudinal side panels of each box; and
the second box is rotated with respect to the first box so that the vertically adjacent box longitudinal side panels display at least a portion of the composite image.
11. The method of claim 10 wherein:
the composite image is formed of at least two subimages;
one of the at least two subimages is located on one of the longitudinal panels of each box;
another of the at least two subimages is located on another of the longitudinal panels of each box sequentially oriented with respect to the first subimage longitudinal side panel; and
the vertically adjacent stacked boxes are oriented so that the at least two subimages are displayed to form the composite image across the at least two boxes in the stack.
12. The method of claim 10 further comprising continuing to stack and orient boxes in a first stack to provide billboard effect.
13. A box stacking system with billboard effect, comprising:
a plurality of rectangular boxes having square end panels and four longitudinal panels;
wherein:
the boxes all have the same size and shape;
an image spans at least two sequential longitudinal panels of each box;
at least two of the plurality of boxes are stacked to provide a billboard effect.
14. The system of claim 13 wherein at least two boxes in the stack are oriented so that vertically adjacent boxes have longitudinal panels oriented to jointly display the image.
15. The system of claim 13 wherein in a stack, rotation of the boxes orients longitudinal panels of vertically adjacent boxes to form a composite image spanning multiple boxes.
16. The system of claim 13 wherein the image on the boxes is a composite image formed of at least two subimages, with the two subimages located on sequential longitudinal panels of the boxes.
17. The system of claim 16 wherein rotation of vertically adjacent boxes in a stack forms the billboard effect by displaying the subimages on sequential longitudinal panels to form the composite image spanning the at least two boxes in the stack.
18. The system of claim 13 wherein the boxes are stacked in multiple parallel stacks flush against one another, with each stack having boxes oriented in the same way forming the billboard effect.
19. A method of stacking boxes for billboard effect comprising:
placing a first rectangular box, having square end panels and four longitudinal rectangular panels, onto a surface;
stacking a second, vertically adjacent rectangular box on top of the first box;
wherein:
each box has the same size and shape;
a single composite image spans at least two sequential longitudinal side panels of each box; and
the second box is rotated with respect to the first box so that the vertically adjacent box longitudinal side panels display at least a portion of the composite image.
20. The method of claim 19 wherein:
the composite image is formed of at least two subimages;
one of the at least two subimages is located on one of the longitudinal panels of each box;
another of the at least two subimages is located on another of the longitudinal panels of each box sequentially oriented with respect to the first subimage longitudinal side panel; and
the vertically adjacent stacked boxes are oriented so that the at least two subimages are displayed to form the composite image across the at least two boxes in the stack.
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 semiconductor device comprising:
a transistor region including an IGBT having a gate electrode and an emitter electrode;
a termination region placed around the transistor region; and
an extraction region placed between the transistor and the termination region and extracting redundant carriers,
wherein a P-type layer is placed on an N-type drift layer in the extraction region,
the P-type layer is connected to the emitter electrode,
a dummy gate electrode is placed via an insulation film on the P-type layer,
the dummy gate electrode is connected to the gate electrode,
life time of carriers in the termination region is shorter than life time of carriers in the transistor region and the extraction region.
2. The semiconductor device according to claim 1, wherein density of lattice defect in the termination region is higher than density of lattice defect in the transistor region and the extraction region.
3. A semiconductor device comprising:
a transistor region including an IGBT having a gate electrode and an emitter electrode;
a termination region placed around the transistor region; and
an extraction region placed between the transistor and the termination region and extracting redundant carriers,
wherein a P-type layer is placed on an N-type drift layer in the extraction region,
the P-type layer is connected to the emitter electrode,
a dummy gate electrode is placed via an insulation film on the P-type layer,
the dummy gate electrode is connected to the gate electrode,
a first N-type buffer layer is placed under the N-type drift layer in the transistor region and the extraction region,
a P-type collector layer is placed under the first N-type buffer layer,
a second N-type buffer layer is placed under the N-type drift layer in the termination region, and
a collector electrode is directly connected to the P-type collector layer and the second N-type buffer layer.