LIGHT EMITTING DEVICE HAVING LIGHT EMITTING ELEMENTS
First Claim
1. A light emitting device, comprising:
- an insulating substrate; and
a first array of GaN-based light emitting elements on the insulating substrate, the first array of light emitting elements comprising a first set of light emitting elements, a second set of light emitting elements, and a third set of light emitting elements, each set comprising at least two light emitting elements,wherein the light emitting elements of the first array are connected in series with each other, the first set of light emitting elements and the second set of light emitting elements are disposed facing opposite directions from each other, and the third set of light emitting elements are disposed facing a direction opposite that of the second set of light emitting elements.
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Abstract
A light-emitting device operating on a high drive voltage and a small drive current. LEDs (1) are two-dimensionally formed on an insulating substrate (10) of e.g., sapphire monolithically and connected in series to form an LED array. Two such LED arrays are connected to electrodes (32) in inverse parallel. Air-bridge wiring (28) is formed between the LEDs (1) and between the LEDs (1) and electrodes (32). The LED arrays are arranged zigzag to form a plurality of LEDs (1) to produce a high drive voltage and a small drive current. Two LED arrays are connected in inverse parallel, and therefore an AC power supply can be used as the power supply.
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Citations
19 Claims
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1. A light emitting device, comprising:
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an insulating substrate; and a first array of GaN-based light emitting elements on the insulating substrate, the first array of light emitting elements comprising a first set of light emitting elements, a second set of light emitting elements, and a third set of light emitting elements, each set comprising at least two light emitting elements, wherein the light emitting elements of the first array are connected in series with each other, the first set of light emitting elements and the second set of light emitting elements are disposed facing opposite directions from each other, and the third set of light emitting elements are disposed facing a direction opposite that of the second set of light emitting elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A light emitting device, comprising:
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an insulating substrate; a first array of GaN-based light emitting elements disposed on the insulating substrate, the first array of light emitting elements comprising a first set of light emitting elements and a second set of light emitting elements, each set comprising at least one light emitting element; and a second array of GaN-based light emitting elements disposed on the insulating substrate, the second array of light emitting elements comprising a third set of light emitting elements and a fourth set of light emitting elements, each set comprising at least one light emitting element, the second array of light emitting elements being connected in parallel with the first array of light emitting elements so that the first array and the second array are of opposite polarities from each other, wherein the light emitting elements of the second array are connected in series with each other, and the third set of light emitting elements and the fourth set of light emitting elements are disposed facing opposite directions from each other. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification