Jade Bird Display (shanghai) Limited

Hong Kong Beida Jade Bird Display Limited

Sandia Corporation

Enraytek Optoelectronics Co., Ltd.

Stc.unm

General Electric Company

Materion Gmbh

Materion Precision Optics (shanghai) Limited

Qiming Li

Yuankun Zhu

Anle Fang

Deshuai Liu

Qunchao Xu

Lei Zhang

Fang Ou

Huiwen Xu

George T Wang

Wing Cheung Chong

Quchao Xu

Yu Zhang

Jian Guo

Sang M Han

Shuai Zhang

Tingting Yu

J Randall Creighton

Ganapathi Subramanian Subramania

Jen-Shyan Chen

Yijing Chen

Shuang Zhao

Houyong Ma

Luis Jose Garces

Juan Antonio Sabate

Richard S Zhang

Jonathan J Wierer, Jr

Igal Brener

Paul Michael Szczesny

William F Wirth

Arthur J Fischer

Daniel D Koleske

Shengyuan Bai

Jeremy Benjamin Wright

Jing Ju

Jie Fan

Guanghui Fu

Zhengguo Yu

Zhengzhang You

Jingchao Xie

Jeffrey T Figiel

A method for fabricating a micro-light emitting diode (LED) display panel, including: forming a stack structure on a wafer substrate, the stack structure including a first metal layer, a first type of light emitting layer, a second metal layer, and a second type of light emitting layer in an order from bottom to top; forming a plurality of trenches in the stack structure, the plurality of trenches defining a plurality of micro LED display panel areas; patterning the second type of light emitting layer and the second metal layer; selectively etching the stack structure to expose a side surface of the first metal layer, thereby forming a plurality of first LEDs and a plurality of second LEDs in each micro LED display panel area; and cutting the wafer substrate to form a plurality of micro LED display panels.

Multi-color LED pixel unit and micro-LED display panel

A micro-LED chip includes multiple micro-LEDs. At least one micro-LED includes: a first type conductive layer; a second type conductive layer stacked on the first type conductive layer; and a light emitting layer formed between the first type conductive layer and the second type conductive layer. The light emitting layer extends along a horizontal level from a top edge of the first type conductive layer and from a bottom edge of the second type conductive layer, such that an edge of the light emitting layer does not contact the top edge of the first type conductive layer and the bottom edge of the second type conductive layer, and the bottom edge of the second type conductive layer is aligned with the top edge of the first type conductive layer. The micro-LED chip further includes a metal layer formed on the light emitting layer between adjacent micro-LEDs.

Micro-LED structure and micro-LED chip including same

A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two more LED structures. In some embodiments, each LED structure is connected to a pixel driver and a shared P-electrode. The LED structures are bonded together through bonding layers. In some embodiments, reflection layers are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.

Systems and methods for coaxial multi-color LED

A micro-LED structure includes a first type conductive layer; a second type conductive layer stacked on the first type conductive layer; and a light emitting layer formed between the first type conductive layer and the second type conductive layer. The light emitting layer extends along a horizontal level from an edge of the first type conductive layer. An edge of the light emitting layer is aligned with an edge of the second type conductive layer. The edge of the second type conductive layer extends along the horizontal level away from the edge of the first type conductive layer.

A micro-LED chip includes multiple micro-LEDs. At least one micro-LED of the multiple micro-LEDs includes: a first type conductive layer; a second type conductive layer stacked on the first type conductive layer; and a light emitting layer formed between the first type conductive layer and the second type conductive layer. The light emitting layer is continuously formed on the whole micro-LED chip, the multiple micro-LEDs sharing the light emitting layer. The micro-LED chip further includes: a top spacer formed on a top surface of the light emitting layer; a bottom spacer formed on a bottom surface of the light emitting layer; and an isolation structure formed between adjacent micro-LEDs.

Micro-LED structure and micro-led chip including same

A micro-LED chip includes multiple micro-LEDs. At least one micro-LED of the multiple micro-LEDs includes: a first type conductive layer; a second type conductive layer stacked on the first type conductive layer; and a light emitting layer formed between the first type conductive layer and the second type conductive layer. The light emitting layer is continuously formed on the whole micro-LED chip, and the multiple micro-LEDs sharing the light emitting layer. The micro-LED chip further includes: a top spacer formed on a top surface of the light emitting layer; a bottom spacer formed on a bottom surface of the light emitting layer; and an isolation structure formed between adjacent micro-LEDs.

A micro-LED chip includes multiple micro-LEDs. At least one micro-LED of the multiple micro-LEDs includes: a first type conductive layer; a second type conductive layer stacked on the first type conductive layer; and a light emitting layer formed between the first type conductive layer and the second type conductive layer. The light emitting layer is continuously formed on the whole micro-LED chip, the multiple micro-LEDs sharing the light emitting layer. The micro-LED chip further comprises: a top spacer formed on a top surface of the light emitting layer; a bottom spacer formed on a bottom surface of the light emitting layer; and an isolation structure formed between adjacent micro-LEDs.

A micro-LED chip includes multiple micro-LEDs. At least one micro-LED of the multiple micro-LEDs includes: a first type conductive layer; a second type conductive layer stacked on the first type conductive layer; and a light emitting layer formed between the first type conductive layer and the second type conductive layer. The light emitting layer is continuously formed on the whole micro-LED chip, the multiple micro-LEDs sharing the light emitting layer. A bottom edge of the second type conductive layer is aligned with a top edge of the first type conductive layer.

A micro-LED chip includes multiple micro-LEDs. At least one micro-LED of the multiple micro-LEDs includes a first type conductive layer; a second type conductive layer stacked on the first type conductive layer; and a light emitting layer formed between the first type conductive layer and the second type conductive layer. The light emitting layer is continuously formed on the whole micro-LED chip, the multiple micro-LEDs sharing the light emitting layer. The micro-LED chip further includes: a top spacer formed on a top surface of the light emitting layer; a bottom spacer formed on a bottom surface of the light emitting layer, wherein an edge of the top spacer is aligned with an edge of the light emitting layer, and an edge of the bottom spacer is aligned with the edge of the light emitting layer.

A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two more LED structures vertically, and/or horizontally and reflected upward via some reflective structures. In some embodiments, each LED structure is connected to a pixel driver and/or a common electrode. The LED structures are bonded together through bonding layers. In some embodiments, planarization layers enclose each of the LED structures or the micro multi-color LED device. In some embodiments, one or more of reflective layers, refractive layers, micro-lenses, spacers, and reflective cup structures are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.

Systems and methods for multi-color LED pixel unit

A light-emitting diode (LED) display panel includes a substrate, a driver circuit array on the substrate and including a plurality of pixel driver circuits arranged in an array, an LED array including a plurality of LED dies each being coupled to one of the pixel driver circuits, a micro lens array including a plurality of micro lenses each corresponding to and being arranged over at least one of the LED dies, and an optical spacer formed between the LED array and the micro lens array.

Light-emitting diode display panel with micro lens array

A micro-LED chip includes multiple micro-LEDs. At least one micro-LED of the multiple micro-LEDs includes: a first type conductive layer; a second type conductive layer stacked on the first type conductive layer; and a light emitting layer formed between the first type conductive layer and the second type conductive layer. The light emitting layer is continuously formed on the whole micro-LED chip, the multiple micro-LEDs sharing the light emitting layer. A profile of the second type conductive layer perpendicularly projected on a top surface of the first type conductive layer is surrounded by an edge of the first type conductive layer.

Micro-LED structure including continuous light emitting layer, and micro-LED chip including same

A single pixel multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are horizontally formed as sub-pixels to combine light. In some embodiments, two or more light emitting layers are formed on a substrate with integrated circuits and the two or more light emitting layers are bonded together with bonding layers. In some embodiments, the two or more LED structures are formed by utilizing a respective top light emitting layer of the respective LED structure and by removing extra top light emitting layer(s) with the respective LED structure. In some embodiments, the up and down orientation of the P-type region and the N-type region within the first light emitting layer is different from the up and down orientation of the P-type region and the N-type region within the second light emitting layer.

Systems and methods for multi-color LED with stacked bonding structures

Growing community of inventors

Albuquerque, NM, United States of America

Qiming Li