MANUFACTURING METHOD OF LIGHT-EMITTING DIODE
First Claim
1. A manufacturing method of light-emitting diode, comprising:
- an attaching-wafer-to-tape step;
attaching a first surface of a light-emitting diode epitaxial wafer to an expanding tape, the first surface being opposite to a second surface of the wafer, and the second surface being provided with a plurality of element electrodes,a dicing-wafer-step;
dicing the wafer longitudinally and laterally to form a plurality of light-emitting diode elements each of a certain size with a pair of the element electrodes, in a state that each of the light-emitting diode elements is attached to the expanding tape,an expanding-tape step;
expanding the expanding tape in a state that each of the diced light-emitting diode elements is attached to the expanding tape, thereby forming a certain space between one another of the diced light-emitting diode elements,a bonding-electrodes step;
placing the respective pairs of the element electrodes of the plurality of light-emitting diode elements on a printed-circuit board assembly provided with a plurality of pairs of electrodes, such that each pair of the element electrodes faces and is bonded to each pair of electrodes on the printed-circuit board assembly; and
a removing-tape step;
removing the expanding tape from the light-emitting diode elements each bonded to the corresponding pair of the electrodes on the printed-circuit board.
2 Assignments
0 Petitions
Accused Products
Abstract
A manufacturing method of an LED comprises attaching an LED epitaxial wafer (LED wafer) to an expanding tape, dicing the LED wafer on the expanding tape longitudinally and laterally to a certain element size to divide into a plurality of LED elements, expanding the expanding tape to a certain size to form an enlarged expanding tape, placing respective pairs of element electrodes of the plurality of LED elements that are attached to the enlarged expanding tape on respective pairs of electrodes on a printed-circuit board assembly collectively to perform a bonding, and removing the enlarged expanding tape from the plurality of the LED elements.
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Citations
6 Claims
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1. A manufacturing method of light-emitting diode, comprising:
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an attaching-wafer-to-tape step;
attaching a first surface of a light-emitting diode epitaxial wafer to an expanding tape, the first surface being opposite to a second surface of the wafer, and the second surface being provided with a plurality of element electrodes,a dicing-wafer-step;
dicing the wafer longitudinally and laterally to form a plurality of light-emitting diode elements each of a certain size with a pair of the element electrodes, in a state that each of the light-emitting diode elements is attached to the expanding tape,an expanding-tape step;
expanding the expanding tape in a state that each of the diced light-emitting diode elements is attached to the expanding tape, thereby forming a certain space between one another of the diced light-emitting diode elements,a bonding-electrodes step;
placing the respective pairs of the element electrodes of the plurality of light-emitting diode elements on a printed-circuit board assembly provided with a plurality of pairs of electrodes, such that each pair of the element electrodes faces and is bonded to each pair of electrodes on the printed-circuit board assembly; anda removing-tape step;
removing the expanding tape from the light-emitting diode elements each bonded to the corresponding pair of the electrodes on the printed-circuit board. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification