United Epitaxy Company, Inc.

High Power Opto, Inc.

Epistar Corporation

United Epitaxxy Company, Ltd.

Chih-Sung Chang

Tzer-Perng Chen

Wei-Yu Yen

Fu-Bang Chen

Tzong-Liang Tsai

Li-Ping Chou

Kuang-Neng Yang

Pai-Hsiang Wang

Way-Jze Wen

Chang-Han Chiang

Chih-Li Chiang

Wei-chun Tseng

Holin Chang

Liang-Jyi Yan

Yen-Chin Wang

Wan-Jou Chen

Shu-Woei Chiou

Wei-Chih Wen

Jinn-Kong Sheu

Chung-Ying Chang

Chung-Kuei Huang

Yi-Chun Chou

Yea-Chen Lee

Shih-Hsien Huang

Jing-Kai Chiu

Shu-Wei Chiu

Tzong-Liang Tasi

Yung-Chuan Yang

Tien-Fu Liao

Wei-En Chien

Chen Tzer-Perng

Tau-Jin Wu

The present invention is a surface emitting laser luminescent diode structure which is characterized in that a recess comprises two tilted slopes on two sides and a protruding trapezoidal cylinder located at the bottom center of the recess is disposed at the bottom of a laser resonant cavity. Thus, a reflecting mirror disposed along the surface of the recess includes two tilted side surfaces as leak-proof sides, which reduces the divergence angle and avoid the lateral light leakage. Additionally, a current isolating layer is disposed on the reflecting mirror and is designed to satisfy the condition (&#xbc;*wavelength*1/refractive index) of an optical film, thereby allowing the reflecting mirror to receive an excellent reflectance. Besides, the current isolating layer limits the flow direction of the current, thus increasing operating speed.

Surface emitting laser luminescent diode structure

An optoelectronic semiconductor includes a carrier, a semiconductor main body having a first semiconductor layer, a second semiconductor layer, and a radiation emitting layer for generating electromagnetic radiation, the semiconductor main body having at least one recess extending through the radiation emitting layer; a first electrode and a second electrode; a first electrical connection layer electrically connected between the first semiconductor layer and the first electrode; a second electrical connection layer electrically connected between the second semiconductor layer and the second electrode and extending through the recess from the carrier to the second semiconductor layer; and a zener diode structure disposed between the first electrical connection layer and the second electrical connection layer so that the first electrical connection layer and the second electrical connection layer are electrically dependent, wherein at least a portion of the zener diode structure is located in a current path between the first electrode and the second electrode.

Optoelectronic semiconductor device and fabrication method thereof

A present invention includes a negative electrode, a substrate, an adhesive layer, an insulation layer and a reflective layer sequentially stacked. A P-type semiconductor layer, a light emitting layer and an N-type semiconductor layer are sequentially stacked on the reflective layer to form an LED light emitting layer. A positive electrode, spaced from the LED light emitting layer, is further stacked on the reflective layer. The present invention further includes an electrical connection structure that penetrates through the insulation layer, and penetrates through, in a spaced manner from the insulation layer, the reflective layer, the P-type semiconductor layer and the light emitting layer. The electrical connection structure is electrically connected to the adhesive layer and the N-type semiconductor layer, and has a pattern distribution. The pattern distribution is least one strip-like shape to form the continuous electrode structure.

Light emitting diode having continuous electrode structure

A structure is presented as a laminar structure having a first electrode, light-emitting diode epitaxial layer, silver reflecting layer, current barrier layer, metallic buffer layer, bonding layer, substrate and second electrode in turn, the silver reflecting layer covering the light-emitting diode epitaxial layer and having a bare region distributed as a pattern, the bare region being filled with a high temperature enduring reflecting material, the current barrier layer being patterned to be distributed over the silver reflecting layer in correspondence with the bare region, the metallic buffer layer separating the current barrier layer while covering the silver reflecting layer, whereby high temperature generated by the current barrier layer is sustained by the reflecting material to prevent the silver reflecting layer from cracking when being contacted with the high temperature of the current barrier layer and then ensure luminous efficiency of the light-emitting diode. Thus, the usage requirement is fulfilled.

Structure of high temperature resistant reflecting layer of light-emitting diode

The present invention includes an N-type semiconductor layer, an active layer, a P-type semiconductor layer, a metal mirror layer, a protection adhesive layer and a metal buffer layer that are sequentially stacked. The protection adhesive layer is selected from a group consisting of a metal oxide and a metal nitride, fully covers one side of the metal mirror layer away from the P-type semiconductor layer, and includes a plurality of conductive holes. The metal buffer layer penetrates through the conductive holes to be electrically connected to the metal mirror layer. After forming the metal mirror layer on the P-type semiconductor layer, the protection adhesive layer that fully covers the metal mirror layer is directly formed to thoroughly protect the metal mirror layer by using the protection adhesive layer, thereby maintaining a reflection rate of the metal mirror layer and ensuring light emitting efficiency of a light emitting diode.

Light emitting diode having mirror protection layer and method for manufacturing mirror protection layer

An electric contact structure adopted for an LED comprises a nitride middle layer and an N-type metal electrode layer. The LED includes an N-type semiconductor layer, a light emission layer and a P-type semiconductor layer that are stacked to form a sandwich structure. The nitride middle layer is patterned and formed on the N-type semiconductor layer. The N-type metal electrode layer is formed on the nitride middle layer and prevented from being damaged by diffusion of the metal ions as the nitride middle layer serves as a blocking interface, thus electric property of the N-type semiconductor layer can be maintained stable. The nitride middle layer would not be softened and condensed due to long-term high temperature, thereby is enhanced adhesion. Moreover, the N-type metal electrode layer further can be prevented from peeling off, hence is increased the lifespan of the LED.

Light emitting diodes

A method for separating a light-emitting diode (LED) from a substrate comprises the following steps. First, a substrate is provided which includes a junction surface and a bottom surface far away from the junction surface. Then a plurality holes are formed on the junction surface. An LED structure is further grown on the junction surface, and includes a junction portion bonded to the junction surface. The bottom surface is then polished to be shrunk to communicate with the holes. Finally, the junction portion is etched by an etching liquid via the holes to separate the LED structure from the substrate. Accordingly, by forming the holes, the LED structure and the substrate can be separated through polishing and etching processes, thereby providing a high yield rate as well as reduced production costs.

Method for separating light-emitting diode from a substrate

An electroluminescent and photoluminescent white light emitting diode (LED) includes an electroluminescent light emitting structure, a first photoluminescent light emitting layer, a second photoluminescent light emitting layer and a red light emitting layer. The electroluminescent light emitting structure emits a violet light having a wavelength between 395 nm and 450 nm and an FWHM smaller than 25 nm. The first photoluminescent light emitting layer and the second photoluminescent light emitting layer are sequentially disposed on the electroluminescent light emitting structure. The first photoluminescent light emitting layer absorbs the violet light to generate a blue light. The second photoluminescent light emitting layer absorbs the violet light and the blue light to generate a green light. The red light emitting layer generates a red light. Accordingly, the violet light, the blue light, the green light and the red light are blended to form a white light having a high color rendering index.

Electroluminescent and photoluminescent multiband white light emitting diode

A semiconductor light-emitting device including an epitaxial structure, a first electrode structure, a second electrode structure, a light reflective metal layer, a resistivity-enhancing structure and a protection ring is provided. The light-emitting epitaxial structure has a first surface and a second surface. The light-emitting epitaxial structure has a first zone and a second zone. The first electrode structure is disposed within the first zone. The second electrode structure is disposed within the second zone. The light reflective metal layer is disposed adjacent to the second surface. The resistivity-enhancing structure is disposed in contact with a surface of the light reflective metal layer and corresponding to a position of the first electrode structure. The protection ring has a first portion and a second portion. The first portion surrounds a sidewall of the light reflective metal layer. The second portion corresponds to the second electrode structure.

Semiconductor light-emitting device and fabricating method thereof

An LED electrode contact structure for an LED is provided. The LED includes a plurality of N-type electrodes, an N-type semiconductor layer, a light-emitting layer, a P-type semiconductor layer, a mirror layer, a buffer layer, a binding layer, a permanent substrate and a P-type electrode that are stacked in sequence. The N-type semiconductor layer has an irregular surface and a plurality of contact platforms. The contact platforms are formed and distributed on the N-type semiconductor layer in a patterned arrangement, and the irregular surface is formed at areas on the N-type semiconductor layer without the contact platforms. The N-type electrodes are respectively formed on the contact platforms. The contact platforms have roughness between 0.01 &#x3bc;m and 0.1 &#x3bc;m, such that not only voids are not generated but also good adhesion is provided to prevent carrier confinement and disengagement. Therefore, satisfactory electrical contact is ensured to thereby increase light emitting efficiency.

Electrode contact structure of light-emitting diode with improved roughness

A semiconductor light-emitting device comprises a light-emitting epitaxial structure, a first electrode structure, a light reflective layer and an resistivity-enhancing structure. The light-emitting epitaxial structure has a first surface and a second surface opposite to the first surface. The first electrode structure is electrically connected to the first surface. The light reflective layer is disposed adjacent to the second surface. The resistivity-enhancing structure is disposed adjacent to the light reflective layer and away from the second surface corresponding to a position of the first electrode structure.

A semiconductor light-emitting device is provided. The semiconductor light-emitting device includes a buffer layer, a light-emitting layer, a first-conductivity semiconductor layer, a first light reflecting layer, a protective structure, and an adhesive layer. The first-conductivity semiconductor layer is disposed between the buffer layer and a first side of the light-emitting layer. The first light reflecting layer is disposed between the first-conductivity semiconductor layer and the buffer layer. The protective structure is disposed between the first reflecting layer and the buffer layer. The adhesive layer is disposed between the first-conductivity semiconductor layer and the protective structure.

Semiconductor light-emitting device

A reflection curved mirror structure is applied to a vertical light-emitting diode (LED) which includes a P-type electrode, a permanent substrate, a binding layer, a buffer layer, a mirror layer, a P-type semiconductor layer, a light-emitting layer, an N-type semiconductor layer and an N-type electrode that are stacked in sequence. Between the P-type semiconductor layer and the mirror layer is a filler. The filler is located right below the N-type electrode to form a protruding curved surface facing the light-emitting layer. The mirror layer forms a mirror structure along the protruding curved surface. With reflection provided by the mirror structure, excited light from the light-emitting layer is reflected towards two sides, so that the excited light can dodge the N-type electrode without being shielded to increase light extraction efficiency.

Reflection curved mirror structure of a vertical light-emitting diode

A light-emitting diode (LED) with a mirror protection layer includes sequentially stacked an N-type electrode, an N-type semiconductor layer, a light-emitting layer, a P-type semiconductor layer, a metal mirror layer, a protection layer, a buffer layer, a binding layer, a permanent substrate, and a P-type electrode. The protection layer is made of metal oxide, and has a hollow frame for covering or supporting edges of the metal mirror layer.

Light-emitting diode with a mirror protection layer

A continuous reflection curved mirror structure is applied to a vertical light-emitting diode (LED) which includes a P-type electrode, a permanent substrate, a binding layer, a buffer layer, a mirror layer, a P-type semiconductor layer, a light-emitting layer, an N-type semiconductor layer and an N-type electrode that are stacked in sequence. Between the P-type semiconductor layer and the mirror layer is a filler. The filler is located right below the N-type electrode to form a protruding continuous curved surface facing the light-emitting layer. The mirror layer forms a mirror structure along the protruding continuous curved surface. With reflection provided by the mirror structure, excited light from the light-emitting layer is reflected towards two sides, so that the excited light can dodge the N-type electrode without being shielded to increase light extraction efficiency.

Growing community of inventors

Hsinchu, Taiwan

Chih-Sung Chang