1. A light unit for LED lamp comprising:
an aluminum substrate having a thin aluminum oxide insulating layer thereon;
a circuit board provided on the insulating layer and includes a through hole to expose part of the insulating layer;
an LED die mounted to the exposed part of the insulating layer; and
two bonding wires electrically connecting the LED die and the circuit board.
2. The light unit of claim 1 wherein the aluminum substrate has a plurality of notches at the edge.
3. The light unit of claim 2 wherein the thickness of insulating layer is 10 \u03bcm.
4. The light unit of claim 3 wherein the circuit board is attached to the insulating layer by a gel.
5. The light unit of claim 4 wherein the circuit board is a thin slice, and has two opposite first welding areas at the edge of the through hole and plural second welding areas for transmitting positive and negative power sources; in addition, the second welding areas electrically connect two power source wires, having a connector at an end thereof; and the circuit board has a plurality of recesses at the edge.
6. The light unit of claim 5 wherein a wall is formed on the circuit board to enclose the LED die and the bonding wires between the first and second welding areas.
7. The light unit of claim 6 wherein the circuit board is a printed circuit board or a flex printed circuit board.
8. The light unit of claim 6 wherein silicone or epoxy resin is dispensed into the wall to form a lens, and the silicone or epoxy resin is doped with phosphor in order to modulate the light color.
9. The light unit of claim 4 wherein the LED die is attached to the insulating layer by a gel.
10. A method for manufacturing a light unit for LED lamp comprising the steps of:
(a). providing a aluminum substrate, which is surface-treated to form a thin aluminum oxide insulating layer thereon;
(b). preparing a circuit board, which has a through hole thereon;
(c). attaching the circuit board to the insulating layer to expose part of the insulating layer;
(d). mounting an LED die by one surface to the exposed part of the insulating layer; and
(e). electrically connecting two bonding wires to the LED die and the circuit board.
11. The method of claim 10 wherein the aluminum substrate of step (a) has a plurality of notches at the edge.
12. The method of claim 11 wherein the thickness of insulating layer is 10 \u03bcm.
13. The method of claim 12 wherein the circuit board is attached to the insulating layer by a gel.
14. The method of claim 13 wherein the circuit board of step (c) is a thin slice, and has two opposite first welding areas at the edge of the through hole and plural second welding areas for transmitting positive and negative power sources; in addition, the second welding areas electrically connect two power source wires, having a connector at an end thereof; and the circuit board has a plurality of recesses at the edge.
15. The method of claim 14 wherein a wall is formed on the circuit board to enclose the LED die and the bonding wires between the first and second welding areas.
16. The method of claim 15 wherein the circuit board is a printed circuit board or a flex printed circuit board.
17. The method of claim 6 wherein silicone or epoxy resin is dispensed into the wall to form a lens, and the silicone or epoxy resin is doped with phosphor in order to modulate the light color.
18. The method of claim 10 wherein the LED die of step (d) is attached to the insulating layer by a gel.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. An image display apparatus for displaying a continuous image by using a plurality of images having an overlapping area, comprising:
a plurality of displaying means for displaying the images corresponding to the plurality of image signals;
interpolation arithmetic means for correcting a geometric displacement between the images displayed by said plurality of displaying means;
brightness correcting means for correcting brightness of the overlapping area of the images displayed by said plurality of displaying means; and
image picking-up means for picking up the images displayed by said plurality of displaying means;
wherein when displaying the images, said plurality of displaying means use the plurality of image signals which are subjected to displacement correction of said interpolation arithmetic means and brightness correction of said brightness correcting means;
wherein the interpolation arithmetic means detects a positional relationship between the images displayed by said plurality of displaying means based on the images picked-up by said image picking-up means, and corrects the displacement between the images obtained by said plurality of displaying means by using a correction coefficient calculated from the positional relationship; and
wherein the image picking-up means picks up the images displayed by said plurality of displaying means by partially using an optical system of said plurality of displaying means.
2. An image display apparatus for displaying a continuous image by using a plurality of image signals which correspond to a plurality of images having an overlapping area, comprising:
a plurality of displaying means for displaying the images corresponding to the plurality of image signals;
interpolation arithmetic means for correcting a geometric displacement between the images displayed by said plurality of displaying means;
brightness correcting means for correcting brightness of the overlapping area of the images displayed by said plurality of displaying means;
image picking-up means for picking up the images displayed by said plurality of displaying means;
a frame memory for storing a total image signal as total image data which corresponds to a total image required to be displayed by said plurality of displaying means; and
a plurality of image memories for storing image signals as image data which respectively correspond to the images to be displayed by said plurality of displaying means;
wherein when displaying the images, said plurality of displaying means use the plurality of image signals which are subjected to displacement correction of said interpolation arithmetic means and brightness correction of said brightness correcting means;
wherein the interpolation arithmetic means detects a positional relationship between the images displayed by said plurality of displaying means based on the images picked-up by said image picking-up means, and corrects the displacement between the images obtained by said plurality of displaying means by using a correction coefficient calculated from the positional relationship; and
wherein divided image signals are stored as divided image data in said plurality of image memories, after the divided image signals are read out from the frame memory storing the total image signal, on the basis of a positional relationship between the images displayed by said plurality of displaying means, the positional relationship being determined based on the images picked-up by said image picking-up means.
3. An image display apparatus for displaying a plurality of image signals produced from a plurality of image signals which have overlap areas such that the images are combined into a single continuous image, said image display apparatus comprising:
an interpolation calculating means for performing interpolation on respective ones of the plurality of image signals which produce the overlap areas, whereby any adjacent two of the plurality of images are matched to overlap each other;
a brightness converting means for correcting in brightness the image signals producing the overlap areas, whereby joints between the plurality of images are made inconspicuous;
a plurality of memories for storing, as image data, the plurality of image signals after the image signals producing the overlap areas are interpolated by the interpolation calculating means and corrected by the brightness converting means;
a plurality of displaying means for reading the image data stored in the plurality of memories, and for displaying the plurality of images as said single continuous image; and
an image-pickup means including an image-pickup device for picking up image signals corresponding to an image displayed by the plurality of display means;
wherein the interpolation calculating means performs the interpolation on the respective ones of the plurality of image signals by using a coefficient calculated based on positional relations of the plurality of display means, which are calculated from the image signals corresponding to the image displayed by the plurality of display means which are picked up by the image-pickup means.
4. An image display apparatus according to claim 3, further comprising an image dividing means for dividing an image desired to be displayed into the plurality of image signals.
5. An image display apparatus according to claim 3, wherein said brightness converting means multiplies a weighting coefficient from a weighting coefficient calculator by using a multiplier.
6. An image display apparatus according to claim 3, wherein said image-pickup means shares a part of an optical system of the displaying means.
7. An image display apparatus according to claim 3, wherein said image-pickup means comprises a camera specifically for detecting displacement, provided independently of the image displaying apparatus, and said camera performs an image pickup operation in one of an entire projection area and a part of the projection area.
8. An image display apparatus according to claim 3, wherein said image-pickup means picks up a subject which has a good correlation, and detects displacement.
9. An image display apparatus according to claim 3, wherein the image-pickup means operates to pick up a reference image displayed by the displaying means, the interpolation calculating means does not perform interpolation and the brightness converting means does not perform conversion.
10. An image display apparatus for dividing and processing an image to be displayed on a screen, comprising:
an image dividing means for dividing the image into a plurality of image signals;
an interpolation calculating means for correcting displacement between the plurality of image signals;
a brightness converting means for correcting a brightness between the plurality of image signals;
a plurality of displaying means for displaying the plurality of image signals corrected by the interpolation calculating means and brightness converting means; and
an image-pickup means including an image-pickup device for picking up an image displayed by the displaying means,
wherein said interpolation calculating means obtains a plurality of positional relations of the image displayed by the displaying means from the image signals picked up by the image-pickup means, and interpolates displacement data using a displacement coefficient calculated in accordance with the positional relations.