Sri International

Other

Yijian Shi

Yigal Dov Blum

David Brent MacQueen

Qianfei Xu

William Siu-Keung Chu

Jiakun Jade Shi

The subject invention provides a capacitor-drive electroluminescent display, which includes a display substrate, row and column electrodes that are deposited on the substrate, and the light-emitting pixel that is electrically connected to (and in between) the row and column electrodes, wherein the light-emitting pixel includes a light-emitting device, a drive capacitor, and a charging switch; wherein, the light-emitting device and the drive capacitor is electrically connected in parallel, which is then electrically connected to the charging switch; wherein, the row or column electrode has a light-emitting windows for installation of the electroluminescent devices. Meanwhile, the subject invention also provides a method for producing the capacitor-drive electroluminescent display.

Capacitor-driven electroluminescent display and method of manufacturing the same

Herein is provided electroluminescent devices, and methods for their use and production. In some embodiments, the devices contain embedded optical features that act as lenses to direct photons emitted from an electroluminescent material. The lensing effect from the optical features allows increased light extraction from the devices compared with devices lacking such features. In some embodiments the devices are prepared using a plurality of etching and deposition steps.

Cavity electroluminescent devices with integrated microlenses

Aspects of the invention include electroluminescent devices and methods for making the same. In certain embodiments, the devices include a substrate, a hole-injection electrode layer, a dielectric layer, an electroluminescent layer, an electron-injection electrode layer, and a cavity. In certain embodiments, an electrode layer (e.g., the electron-injection or hole-injection electrode layer) is positioned above the cavity and is configured for directing light through the substrate. In certain embodiments, an electrode layer (e.g., the electron-injection or hole-injection electrode layer) is positioned above and spans across the cavity. The use of the produced device(s) in electroluminescent displays is also provided herein.

Cavity electroluminescent devices and methods for producing the same

Aspects of the disclosure include electroluminescent devices and methods for making the same. The devices include a substrate, a hole-injection electrode layer, an electroluminescent layer, and an electron-injection electrode layer, such as a layer that includes an air-stable, low work function material, which layer is capable of achieving efficient electron injection with reduced current leakage. In certain embodiments, the devices may contain an efficient electron injection layer that includes a composition comprising a polymer, e.g., a polymer that contains polar components (such as a polar functional group), and a metal diketonate. In certain embodiments, the devices may contain an electron injection layer that includes polyethylene glycol dimethyl ether and barium or calcium acetylacetonate. Methods of manufacturing such devices, for instance, employing a solution processing step for the deposition of an electron injection layer, as well as the use of the produced device(s) in electroluminescent displays is also provided herein.

High efficiency electroluminescent devices and methods for producing the same

The disclosure provides methods and materials suitable for use as encapsulation barriers and dielectric layers in electronic devices. In one embodiment, for example, there is provided an electroluminescent device or other electronic device with a dielectric layer comprising alternating layers of a silicon-containing bonding material and a ceramic material. The methods provide, for example, electronic devices with increased stability and shelf-life. The invention is useful, for example, in the field of microelectronic devices.

Encapsulation methods and dielectric layers for organic electrical devices

The disclosure provides methods and materials suitable for use as encapsulation barriers in electronic devices. In one embodiment, for example, there is provided an electroluminescent device or other electronic device encapsulated by alternating layers of a silicon-containing bonding material and a ceramic material. The encapsulation methods provide, for example, electronic devices with increased stability and shelf-life. The invention is useful, for example, in the field of microelectronic devices.

Encapsulation methods for organic electrical devices

The disclosure provides methods and materials for decreasing the cost and increasing the efficiency of electroluminescent devices. The disclosure also provides electroluminescent devices prepared by such methods. In one embodiment, for example, there is provided a method for preparing an electroluminescent device comprising two metal electrodes, an electroluminescent layer, an optical/insulating layer, and a conductive layer, all of which are disposed on a transparent substrate. One of the electrodes is patterned, and the optical/insulating layer comprises vias to allow conduction between the patterned electrode and the conductive layer.

Low cost high efficiency transparent organic electrodes for organic optoelectronic devices

The disclosure provides methods, materials, and devices suitable for use in electroluminescent devices. In one embodiment, for example, there is provided a layered cathode comprising a metal substrate and an intermediate organic or organometallic layer having an electron accepting group. The intermediate layer provides an interface with an overlaying electroluminescent layer. The disclosure finds utility, for example, in the field of microelectronic devices.

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Mountain View, CA, United States of America

Yijian Shi