Patents Assigned to Epistar Corporation
-
Patent number: 12087891Abstract: A package comprises a substrate including a first surface, and an upper conductive layer arranged on the first surface, a first light-emitting unit arranged on the upper conductive layer, and comprises a first semiconductor layer, a first substrate, a first light-emitting surface and a first side wall, a second light-emitting unit, which is arranged on the upper conductive layer, and comprises a second light-emitting surface and a second side wall, a light-transmitting layer arranged on the first surface and covers the upper conductive layer, the first light-emitting unit, and the second light-emitting unit, a light-absorbing layer, which is arranged between the substrate and the light-transmitting layer in a continuous configuration of separating the first light-emitting unit and the second light-emitting unit from each other, and a reflective wall arranged on the first side wall, wherein a height of the reflective wall is lower than that of the light-absorbing layer.Type: GrantFiled: January 8, 2024Date of Patent: September 10, 2024Assignees: Epistar Corporation, Yenrich Technology CorporationInventors: Shau-Yi Chen, Tzu-Yuan Lin, Wei-Chiang Hu, Pei-Hsuan Lan, Min-Hsun Hsieh
-
Patent number: 12080831Abstract: A light-emitting device includes a semiconductor structure including a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, wherein the second semiconductor layer includes a first edge; a reflective structure located on the second semiconductor layer and including an outer edge; a first electrode pad located on the reflective structure, wherein the first electrode pad including an outer side wall adjacent to the outer edge, wherein the outer edge extends beyond the outer side wall and does not exceed the first edge in a cross-sectional view of the light-emitting device.Type: GrantFiled: June 21, 2023Date of Patent: September 3, 2024Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Jia-Kuen Wang, Wen-Hung Chuang, Tzu-Yao Tseng, Cheng-Lin Lu
-
Patent number: 12074252Abstract: An optoelectronic semiconductor device includes a substrate, a first type semiconductor structure, a second type semiconductor structure, an active structure and a contact structure. The first type semiconductor structure is located on the substrate and has a first protrusion part with a first thickness and a platform part with a second thickness. The second type semiconductor structure is located on the first type semiconductor structure. The active structure is between the first type semiconductor structure and the second type semiconductor structure. The contact structure is disposed between the first type semiconductor structure and the substrate. The second thickness of the platform part is in a range of 0.01 ?m to 1 ?m.Type: GrantFiled: September 19, 2022Date of Patent: August 27, 2024Assignee: EPISTAR CORPORATIONInventors: Chung-Hao Wang, Yu-Chi Wang, Yi-Ming Chen, Yi-Yang Chiu, Chun-Yu Lin
-
Patent number: 12068735Abstract: An acoustic wave device, includes piezoelectric layer having an upper piezoelectric surface and a lower piezoelectric surface; an upper electrode formed on the upper piezoelectric surface; a lower electrode; a support layer including a non-monocrystalline insulating material; and a lower cover, wherein the lower electrode and the support layer formed between the lower cover and the lower piezoelectric surface.Type: GrantFiled: March 5, 2021Date of Patent: August 20, 2024Assignee: EPISTAR CORPORATIONInventors: Ta-Cheng Hsu, Wei-Shou Chen, Chung-Jen Chung, Chia-Min Chang
-
Patent number: 12068433Abstract: A light-emitting device includes: a substrate having a top surface, wherein the top surface comprises a first portion and a second portion; a first semiconductor stack on the first portion, comprising a first upper surface and a first side wall; and a second semiconductor stack on the first upper surface, comprising a second upper surface and a second side wall, and wherein the second side wall connects the first upper surface; wherein the first semiconductor stack comprises a dislocation stop layer; wherein the dislocation stop layer comprises AlGaN; and wherein the first side wall and the second portion of the top surface form an acute angle ? between thereof.Type: GrantFiled: October 7, 2021Date of Patent: August 20, 2024Assignee: EPISTAR CORPORATIONInventors: Yen-Tai Chao, Sen-Jung Hsu, Tao-Chi Chang, Wei-Chih Wen, Ou Chen, Yu-Shou Wang, Chun-Hsiang Tu, Jing-Feng Huang
-
Patent number: 12068410Abstract: A semiconductor power device includes a substrate; a buffer structure formed on the substrate; a barrier structure formed on the buffer structure; a channel layer formed on the barrier structure; and a barrier layer formed on the channel layer; wherein the barrier structure includes a first functional layer on the buffer structure, a second functional layer formed between the first functional layer and the buffer structure, a first back-barrier layer on the first functional layer, and an interlayer between the first back-barrier layer and the first functional layer; wherein a material of the first back-barrier layer includes Alx1Ga1-x1N, a material of the first functional layer includes Alx2Ga1-x2N, a material of the interlayer includes Alx3Ga1-x3N, a material of the second functional layer includes Alx4Ga1-x4N, wherein 0<x1?1, 0?x2?1, 0?x3?1, 0?x4<1, and x1?x2; and wherein the first functional layer includes a first thickness, the second functional layer includes a second thickness, and the second thicType: GrantFiled: July 28, 2021Date of Patent: August 20, 2024Assignee: EPISTAR CORPORATIONInventors: Ya-Yu Yang, Shang-Ju Tu, Tsung-Cheng Chang, Chia-Cheng Liu
-
Patent number: 12062748Abstract: A light-emitting device includes a carrier, a light-emitting element and a connection structure. The carrier includes a first electrical conduction portion. The light-emitting element includes a first light-emitting layer capable of emitting first light and a first contact electrode formed under the light-emitting layer. The first contact electrode is corresponded to the first electrical conduction portion. The connection structure includes a first electrical connection portion and a protective portion surrounding the first contact electrode and the first electrical connection portion. The first electrical connection portion includes an upper portion, a lower portion and a neck portion arranged between the upper portion and the lower portion. An edge of the upper portion is protruded beyond the neck portion, and an edge of the lower portion is protruded beyond the upper portion.Type: GrantFiled: February 27, 2023Date of Patent: August 13, 2024Assignee: EPISTAR CORPORATIONInventors: Min-Hsun Hsieh, Shau-Yi Chen, Shao-You Deng
-
Patent number: 12057337Abstract: A chip transferring method includes providing a plurality of chips on a first load-bearing structure; measuring photoelectric characteristic values of the plurality of chips; categorizing the plurality of chips into a first portion chips and a second portion chips according to the photoelectric characteristic values of the plurality of chips, wherein the second portion chips comprise parts of the plurality of chips which photoelectric characteristic value falls within an unqualified range; removing the second portion chips from the first load-bearing structure; dividing the first portion chips into a plurality of blocks according to the photoelectric characteristic values, and each of the plurality of blocks comprising multiple chips of the first portion chips; and transferring the multiple chips of one of the plurality of blocks to a second load-bearing structure.Type: GrantFiled: May 4, 2023Date of Patent: August 6, 2024Assignee: EPISTAR CORPORATIONInventors: Min-Hsun Hsieh, De-Shan Kuo, Chang-Lin Lee, Jhih-Yong Yang
-
Patent number: 12057524Abstract: The present disclosure provides a semiconductor stack, a semiconductor device and a method for manufacturing the same. The semiconductor device includes a first semiconductor layer and a light-emitting structure. The first semiconductor layer includes a first III-V semiconductor material, a first dopant, and a second dopant. The light-emitting structure is on the first semiconductor layer and includes an active structure. In the first semiconductor layer, a concentration of the second dopant is higher than a concentration of the first dopant. The first dopant is carbon, and the second dopant is hydrogen.Type: GrantFiled: December 27, 2019Date of Patent: August 6, 2024Assignee: EPISTAR CORPORATIONInventors: Meng-Yang Chen, Jung-Jen Li
-
Publication number: 20240258455Abstract: A method of processing light-emitting elements includes: placing a plurality of LED dies from original wafers or trays on each trays of a next-stage carrier, based on a predetermined pattern. The predetermined pattern arranges two adjacent LED groups in a first direction on the original wafer or trays to be placed on two non-adjacent positions in the first direction on the tray of the next-stage carrier. The LED dies on the original wafer or trays have a first horizontal pitch and a first vertical pitch. The LED dies on each tray of the next-stage carrier have a second horizontal pitch and a second vertical pitch. The second horizontal pitch is greater than the first horizontal pitch, or the second vertical pitch is greater than the first vertical pitch. Besides, a light-emitting element device using the aforementioned method is also provided.Type: ApplicationFiled: April 16, 2024Publication date: August 1, 2024Applicant: EPISTAR CORPORATIONInventors: Min-Hsun HSIEH, Chang-Lin LEE
-
Patent number: 12051767Abstract: A semiconductor device is provided, which includes a first semiconductor structure, a second semiconductor structure, and an active region. The first semiconductor structure includes a first dopant. The second semiconductor structure is located on the first semiconductor structure and includes a second dopant different from the first dopant. The active region includes a plurality of semiconductor pairs and located between the first semiconductor structure and the second semiconductor structure. Each semiconductor pair includes a barrier layer and a well layer and includes the first dopant. The active region does not include a nitrogen element. A doping concentration of the first dopant in the first semiconductor structure is higher than a doping concentration of the first dopant in the active region.Type: GrantFiled: January 20, 2023Date of Patent: July 30, 2024Assignee: EPISTAR CORPORATIONInventors: Yen-Chun Tseng, Kuo-Feng Huang, Shih-Chang Lee, Ming-Ta Chin, Shih-Nan Yen, Cheng-Hsing Chiang, Chia-Hung Lin, Cheng-Long Yeh, Yi-Ching Lee, Jui-Che Sung, Shih-Hao Cheng
-
Patent number: 12021177Abstract: A display device includes LEDs, a circuit board, an insulating layer, conductive posts, a control conductive plate, and a common conductive strip. The circuit board includes first pads and a second pad surrounding the first pads. The LEDs are on an insulating layer covering the first pads, each including a first and second electrode pad. The conductive posts are on and connected to a first portion of the first pads, and penetrate the insulation layer. The control conductive plate is electrically connected to one of the first electrode pads and the conductive posts. The common conductive strip is on the insulation layer and electrically connected to the second pad and a second electrode pad. Each first electrode pad is electrically connected to the first pads. A second portion of the first pads is completely covered by the insulation layer and overlapped with the common conductive strip and the insulation layer.Type: GrantFiled: August 12, 2021Date of Patent: June 25, 2024Assignees: EPISTAR CORPORATION, YENRICH TECHNOLOGY CORPORATIONInventors: Min-Hsun Hsieh, Chun-Wei Chen
-
Patent number: 12007646Abstract: A display device includes a first light-emitting module and a second light-emitting module. Each light-emitting module has a substrate, a plurality of LED dies arranged on the substrate, a reflective layer on the substrate, and a light-transmissive layer. The light-transmissive layer covers the substrate, the plurality of LED dies, and the reflective layer. Both the light-transmissive layer of the first module and the light-transmissive layer of the second module have rough uppermost surfaces. The first light-emitting module has a first reflectivity, the second light-emitting module has a second reflectivity, and a standard deviation between the first reflectivity and the second reflectivity is not greater than 0.5.Type: GrantFiled: November 17, 2022Date of Patent: June 11, 2024Assignees: EPISTAR CORPORATION, YENRICH TECHNOLOGY CORPORATIONInventors: Chong-Yu Wang, Ching-Tai Cheng, Wei-Shan Hu
-
Patent number: 12002906Abstract: The present disclosure provides a semiconductor device and a semiconductor component. The semiconductor device includes an active structure, a ring-shaped semiconductor contact layer, a first electrode, and an insulating layer. The active structure has a first-conductivity-type semiconductor layer, a second-conductivity-type semiconductor layer, and an active layer located between the first-conductivity-type semiconductor layer and the second-conductivity-type semiconductor layer. The ring-shaped semiconductor contact layer is located on the second-conductivity-type semiconductor layer and having a first inner sidewall and a first outer sidewall. The first electrode has an upper surface and covers the ring-shaped semiconductor contact layer. The insulating layer covers the first electrode and the active structure and has a second inner sidewall and a second outer sidewall. The first inner sidewall is not flush with the second inner sidewall in a vertical direction.Type: GrantFiled: August 19, 2021Date of Patent: June 4, 2024Assignee: EPISTAR CORPORATIONInventors: Hao-Chun Liang, Wei-Shan Yeoh, Yao-Ning Chan, Yi-Ming Chen, Shih-Chang Lee
-
Patent number: 12002904Abstract: A light-emitting element includes a semiconductor light-emitting stack including a first semiconductor layer, a second semiconductor layer formed on the first semiconductor layer, and an active layer formed therebetween; a first conductive layer disposed on the second semiconductor layer and electrically connecting the second semiconductor layer; a second conductive layer disposed on the second semiconductor layer and electrically connecting the first semiconductor layer; and a cushion part disposed on and directly contacts the first conductive layer, wherein in a top view, the cushion part is surrounded by and electrically isolated from the second conductive layer.Type: GrantFiled: April 27, 2021Date of Patent: June 4, 2024Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Tsung-Hsun Chiang, Chien-Chih Liao, Wen-Hung Chuang, Min-Yen Tsai, Bo-Jiun Hu
-
Patent number: 12002842Abstract: A light-emitting diode, includes a substrate; a semiconductor stack formed on the substrate; a first current blocking patterned structure and a second current blocking patterned structure formed on the semiconductor stack and separated from each other; and a plurality of electrodes formed on the semiconductor stack and electrically connected to the semiconductor stack; wherein the first current blocking patterned structure is overlapped with one of the plurality of electrodes and the second current blocking patterned structure is not overlapped with the plurality of electrodes.Type: GrantFiled: July 30, 2020Date of Patent: June 4, 2024Assignee: EPISTAR CORPORATIONInventors: Hsin Ying Wang, Tzung Shiun Yeh, Yu Ling Lin, Bo Jiun Hu
-
Patent number: 11996493Abstract: The present disclosure provides a light-emitting module and a display apparatus thereof. The light-emitting module includes a circuit substrate which includes a first surface and a second surface opposite to the first surface. The first surface includes a plurality of conductive channels, and the second surface includes a plurality of conductive pads. A plurality of light-emitting groups is arranged in a matrix on the first surface. Each of the light-emitting groups includes a red light-emitting diode chip, a green light-emitting diode chip, and a blue light-emitting diode chip. An electric component is disposed on the first surface and located in the light-emitting groups matrix. A translucent encapsulating component covers the plurality of light-emitting groups and the electric component. Wherein, the light-emitting groups matrix comprises m columns and n rows.Type: GrantFiled: August 6, 2021Date of Patent: May 28, 2024Assignee: EPISTAR CORPORATIONInventors: Min-Hsun Hsieh, Jen-Chieh Yu, Chun-Wei Chen
-
Patent number: 11990575Abstract: A light-emitting device comprises a substrate comprising a sidewall, a first top surface, and a second top surface, wherein the second top surface is closer to the sidewall of the substrate than the first top surface to the sidewall of the substrate; a semiconductor stack formed on the substrate comprising a first semiconductor layer, an active layer, and a second semiconductor layer; a dicing street surrounding the semiconductor stack, and exposing the first top surface and the second top surface of the substrate; a protective layer covering the semiconductor stack; a reflective layer comprising a Distributed Bragg Reflector structure covering the protective layer; and a cap layer covering the reflective layer, wherein the second top surface of the substrate is not covered by the protective layer, the reflective layer, and the cap layer.Type: GrantFiled: June 5, 2023Date of Patent: May 21, 2024Assignee: EPISTAR CORPORATIONInventors: Hsin-Ying Wang, Chih-Hao Chen, Chien-Chih Liao, Chao-Hsing Chen, Wu-Tsung Lo, Tsun-Kai Ko, Chen Ou
-
Publication number: 20240162380Abstract: A semiconductor device is provided. The semiconductor device includes a first semiconductor layer; a second semiconductor layer on the first semiconductor layer; an active region between the second semiconductor layer and the first semiconductor layer; an electron blocking structure between the active region and the second semiconductor layer; a first nitride semiconductor layer between the active region and the electron blocking structure; and a second nitride semiconductor layer between the electron blocking structure and the second semiconductor layer. The first nitride semiconductor layer includes a first indium content, a first aluminum content and a first conductivity-type dopant. The second nitride semiconductor layer includes a second indium content, a second aluminum content and a second conductivity-type dopant.Type: ApplicationFiled: November 9, 2023Publication date: May 16, 2024Applicant: EPISTAR CORPORATIONInventors: Huan-Yu LAI, Li-Chi PENG
-
Patent number: D1040117Type: GrantFiled: October 27, 2023Date of Patent: August 27, 2024Assignee: EPISTAR CORPORATIONInventors: Yao-Ning Chan, Tzu-Yun Feng, Yun-Ya Chang