Conductive liquid crystal device and orgnic electroluminescence device

• US 20020005926A1
• Filed: 04/05/2001
• Published: 01/17/2002
• Est. Priority Date: 04/07/2000
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Tsuboyama, Akira, Moriyama, Takashi, Okada, Shinjiro, Takiguchi, Takao
• Granted Patent: US 6,870,583 B2
• Time in Patent Office: Days
• US Class Current: 349/129
• CPC Class Codes: H10K 50/14 Carrier transporting layers
• CPC Class Codes: H10K 50/85 Arrangements for extracting light from the devices
• CPC Class Codes: H10K 59/875 Arrangements for extracting light from the devices
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 71/421 using coherent electromagnetic radiation, e.g. laser annealing
• CPC Class Codes: H10K 85/324 comprising aluminium, e.g. Alq3
• CPC Class Codes: H10K 85/615 Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
• CPC Class Codes: H10K 85/631 Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
• CPC Class Codes: H10K 85/649 Aromatic compounds comprising a hetero atom
• CPC Class Codes: H10K 85/731 Liquid crystalline materials

Abstract

A conductive liquid crystal device capable of exhibiting luminescence of different luminances at an identical drive voltage, thus useful as an EL device having a memory characteristic, is provided. The conductive liquid crystal device is formed by a pair of oppositely disposed electrodes and a liquid crystalline organic layer disposed between the electrodes, wherein the liquid crystalline organic layer has plural regions having mutually different electro-conductivities.

Claims

1. A conductive liquid crystal device, comprising:

a pair of oppositely disposed electrodes and a liquid crystalline organic layer disposed between the electrodes, wherein the organic layer has plural regions having mutually different electro-conductivities.

2. A device according to claim 1, wherein said plural regions have different alignment states of liquid crystal molecules.

3. A device according to claim 2, wherein said different alignment states of liquid crystal molecules have been formed by laser light irradiation of the liquid crystalline organic layer.

4. A device according to claim 2, wherein said different alignment states of liquid crystal molecules have been formed by voltage application to the liquid crystalline organic layer.

5. An organic electroluminescence device comprising:

a conductive liquid crystal device which includes a pair of oppositely disposed electrodes and a liquid crystalline organic layer disposed between the electrodes, wherein the liquid crystalline organic layer has plural regions having mutually different alignment states resulting in different luminances of luminescence from the device.

6. An organic electroluminescence device comprising:

a conductive liquid crystal device which includes a pair of oppositely disposed electrodes and at least two organic layers disposed between the electrodes, wherein said at least two organic layers include at least one liquid crystalline organic layer having plural regions of different electro-conductivities resulting in different luminances of luminescence from the device.