1. Method for visualizing moments of an object, comprising:
scanning an object by an image scanning apparatus to acquire at least two-dimensional cross-sectional images of said object at discrete acquisition times;
digitalizing each of said cross-sectional images;
recording each of said cross-sectional images and its corresponding position and acquisition time;
transforming said cross-sectional images into a three-dimensional dataset;
displaying said three-dimensional data set over time;
partitioning the three-dimensional data set into a plurality of volume units, wherein each volume unit has a unit surface;
calculating a change of volume of each volume unit over said acquisition times to obtain level information of each corresponding unit surface over time, wherein said level information corresponds to a time stamp derived from the function of the change of volume of each volume unit over time; and
displaying said level information.
2. Method as claimed in claim 1, wherein said level information is allocated to a range of colors or a range of grey values.
3. Method as claimed in claim 1, comprising
partitioning said three-dimensional data set into a plurality of volume units by using a center of gravity within said object and linking all corners of said unit surfaces with said center of gravity by straight lines.
4. Method as claimed in claim 1, comprising
partitioning said level information using discrete level borders and allocating a limited number of colors to said discrete level information.
5. Method as claimed in claim 1, comprising
displaying said level information three-dimensionally over time.
6. Method as claimed in claim 1, comprising
displaying said unit surfaces and their corresponding level information two-dimensionally on a map by using a three-dimensional transformation method.
7. Method as claimed in claim 6, comprising
displaying a propagation of said level information over time on said map, by additionally displaying a two-dimensional propagation vector.
8. Method as claimed in claim 7, comprising
displaying a length and a direction of said two-dimensional propagation vector in relation to a direction and amount of volume change of the volume units.
9. Method as claimed in claim 1, comprising
selecting said discrete acquisition times for a cardiac object in motion in accordance with an algorithm considering heart cycle variations by electrocardiographic gating and respiratory cycle variations by impedance measurements.
10. Apparatus for visualizing movements of an object, comprising
ultrasonic scanning apparatus for scanning an object to acquire at least two-dimensional cross-sectional images of said object at discrete acquisition times;
means for digitalizing each of said cross-sectional images;
means for recording each of said cross-sectional images and its corresponding position and acquisition time;
means for transforming said cross-sectional images into a three-dimensional data set;
means for displaying said three-dimensional data set over time,
means for partitioning the three-dimensional data set into a plurality of volume units, wherein each volume unit has a unit surface; and
means for calculating a change of volume of each volume unit over said acquisition times to obtain level information of each corresponding unit surface over time, wherein said level information corresponds to a time stamp derived from the function of the change of volume of each volume unit over time, and wherein said displaying means display said level information.
11. Apparatus as claimed in claim 10,
wherein said partitioning means partition said level information using discrete level borders and allocates a limited number of colors to said discrete level information,
wherein said transforming means transform said unit surfaces with their respective level information two-dimensionally over time on a map by using a two-dimensional transformation method; and
wherein said displaying means display said level information two-dimensionally.
12. Apparatus as claimed in claim 10,
wherein said display means display a two-dimensional propagation vector, thereby displaying a length and a direction of said two-dimensional propagation vector in relation to a direction and amount of volume change of the respective volume units.
13. Apparatus as claimed in claim 10,
further comprising electrocardiographic gating means and respiration trigger means for dynamically scanning cardiac objects.
14. Method as claimed in claim 7,
wherein the moving object is the heart, and the two-dimensional propagation vector represents both a quantity of myocardium that has reached peak contraction and the mean direction of a contraction wave.
15. Method as claimed in claim 1,
wherein the moving object is the heart, and the time stamp is the time necessary for each volume unit to reach its lowest volume.
16. Method as claimed in claim 1, comprising
displaying said level information over time, wherein each time stamp will be allocated different colors when moving along time.
17. Method as claimed in claim 4, comprising
displaying said level information dynamically, on a two-dimensional surface in a three-dimensional space, wherein the level borders are shifted over time, so that different colors are allocated to different time stamps over time.
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 structure comprising:
a light emitting device comprising:
a semiconductor structure comprising a light emitting layer disposed between an n-type region and a p-type region;
a metal p-contact disposed on the p-type region; and
a metal n-contact disposed on the n-type region;
wherein:
the metal p-contact and the metal n-contact are both formed on a same side of the semiconductor structure; and
one of the metal p-contact and the metal n-contact is a large area contact and the other of the metal p-contact and the metal n-contact is a small area contact, the large area contact having a larger area than the small area contact;
a mount; and
a bonding structure connecting the light emitting device to the mount, wherein in an area underlying the small area contact, the bonding structure comprises a plurality of metal regions separated by gaps, wherein nearest neighbor metal regions are separated by a gap less than 5 microns wide.
2. The structure of claim 1 wherein the metal regions comprise gold bumps compressed by bonding the light emitting device to the mount.
3. The structure of claim 1 wherein the metal regions comprise a metal with a Young’s modulus less than 150 GPa.
4. The structure of claim 1 wherein in an area underlying the large area contact, the bonding structure comprises a plurality of metal regions separated by gaps.
5. The structure of claim 4 wherein the portion of the bonding structure underlying the large area contact is separated from the portion of the bonding structure underlying the small area contact by less than 40 microns.
6. The structure of claim 1 wherein the small area contact comprises a center portion and an arm portion, wherein the arm portion extends from the center portion toward an edge of the light emitting device, wherein a portion of the bonding structure underlies the center portion and no portion of the bonding structure underlies the arm portion.
7. The structure of claim 6 further comprising a gap disposed between the mount and the arm portion.
8. The structure of claim 6 wherein the small area contact is the metal n-contact, wherein the metal n-contact is formed in a trench formed in the semiconductor structure, wherein a top surface of the metal n-contact is recessed relative to a top surface of the metal p-contact.
9. The structure of claim 8 further comprising a dielectric layer disposed between a portion of the metal p-contact and a portion of the metal n-contact, wherein a portion of a top surface of the dielectric layer extends above the top surfaces of the metal n-contact and the metal p-contact.
10. The structure of claim 9 further comprising a portion of the bonding structure disposed between the mount and the portion of the top surface of the dielectric layer extending above the top surfaces of the metal n-contact and the metal p-contact.
11. The structure of claim 6 wherein the center portion is no more than 45 microns wide and the arm portion is no more than 25 microns wide.
12. The structure of claim 1 wherein no bonding structure is formed in a second area underlying the large area contact, wherein the second area is aligned with a metal trace formed on the mount.
13. The structure of claim 1 further comprising a continuous, linear metal bump disposed between the light emitting device and the mount proximate to an edge of the light emitting device, wherein the continuous, linear metal bump forms a seal between the light emitting device and the mount.
14. The structure of claim 1 further comprising a continuous, curved metal bump disposed between the light emitting device and the mount proximate to an edge of the light emitting device, wherein the continuous, curved metal bump forms a seal between the light emitting device and the mount.
15. The structure of claim 1 further comprising at least two lines of offset metal bumps disposed between the light emitting device and the mount proximate to an edge of the light emitting device, wherein the at least two lines of metal bumps are arranged to collapse during bonding to form a continuous seal between the light emitting device and the mount.