Electroluminescence light emitting display system and electroluminescence light emitting sheet

• US 20040041755A1
• Filed: 08/11/2003
• Published: 03/04/2004
• Est. Priority Date: 08/30/2002
• Status: Abandoned Application

• Current Assignee: TOMY Company Limited
• Original Assignee: TOMY Company Limited
• Inventors: Yamanaka, Hiroyuki, Watanabe, Kimitaka, Takahashi, Isamu
• Application Number:
  US10/637,574
• Publication Number:
  US 20040041755A1
• Time in Patent Office: Days
• US Class Current: 345/76
• CPC Class Codes: H05B 33/20 characterised by the chemical or physical composition or the arrangement of the material in which the electroluminescent material is embedded
• CPC Class Codes: H05B 33/22 characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
• CPC Class Codes: H05B 33/26 characterised by the composition or arrangement of the conductive material used as an electrode
• CPC Class Codes: H05B 44/00 Circuit arrangements for operating electroluminescent light sources for operating light emitting diodes H05B45/00
• CPC Class Codes: H10K 50/805 Electrodes
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 59/10 OLED displays
• CPC Class Codes: H10K 59/17 Passive-matrix OLED displays
• CPC Class Codes: H10K 59/805 Electrodes
• CPC Class Codes: H10K 59/873 Encapsulations
• CPC Class Codes: H10K 71/841 Applying alternating current [AC] during manufacturing or treatment
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

An electroluminescence light emitting display system has: an electroluminescence light emitting sheet which has: a light-emitting layer containing electroluminescence light-emitting elements therein, and an electrode pair of first and second electrodes each of which forms a comb-like pattern and extends to a direction inclined with respect to a width direction of the electroluminescence light emitting sheet, comb-like pattern portions of the first and second electrodes engaging each other with a predetermined interval across a spacing region so as to prevent contacting each other; and a voltage application unit for applying a predetermined voltage between the first and second electrodes of the electrode pair, wherein the electroluminescence light emitting display system is configured such that when the voltage application is performed by the voltage application unit and an electrically conductive material is put on an area of a front surface in the light-emitting layer, the area in the light-emitting layer emits light.

Claims

1. An electroluminescence light emitting display system comprising:

an electroluminescence light emitting sheet which comprises;

a light-emitting layer containing electroluminescence light-emitting elements therein, and an electrode pair of first and second electrodes each of which forms a comb-like pattern and extends to a direction inclined with respect to a width direction of the electroluminescence light emitting sheet, comb-like pattern portions of the first and second electrodes engaging each other with a predetermined interval across a spacing region so as to prevent contacting each other; and

a voltage application unit for applying a predetermined voltage between the first and second electrodes of the electrode pair,

wherein the electroluminescence light emitting display system is configured such that when the voltage application is performed by the voltage application unit and an electrically conductive material is put on an area of a front surface in the light-emitting layer, the area in the light-emitting layer emits light.

2. The electroluminescence light emitting display system as claimed in claim 1, wherein the comb-like pattern portion extends to the direction which is inclined at an angle in a range of 45±

22.5 degrees with respect to the width direction.

3. The electroluminescence light emitting display system as claimed in claim 1, wherein each width of the first and second electrodes in a light emitting region of the electroluminescence light emitting sheet is 0.2-0.5 mm, and each width of the spacing regions in the light emitting region of the electroluminescence light emitting sheet is 0.2-0.3 mm.

4. The electroluminescence light emitting display system as claimed in claim 1, wherein the electrode pair is formed by depositing a metal such as copper, aluminum or the like on a base layer to form a metal layer and etching the deposited metal layer.

5. The electroluminescence light emitting display system as claimed in claim 1, wherein the surface of the light-emitting sheet allows to put the electrically conductive material thereon removably.

6. The electroluminescence light emitting display system as claimed in claim 1, wherein the electroluminescence light emitting display system comprises a plurality of electrode pairs.

7. An electroluminescence light emitting sheet comprising:

a light-emitting layer containing electroluminescence light-emitting elements therein; and

an electrode pair of first and second electrodes,

wherein each of which forms a comb-like pattern and extends to a direction inclined with respect to a width direction of the electroluminescence light emitting sheet, comb-like pattern portions of the first and second electrodes engaging each other with a predetermined interval across a spacing region so as to prevent contacting each other.

8. The electroluminescence light emitting sheet as claimed in claim 7, wherein the comb-like pattern portion extends to the direction which is inclined at an angle in a range of 45±

22.5 degrees with respect to the width direction.

9. The electroluminescence light emitting sheet as claimed in claim 7, wherein each width of the first and second electrodes in a light emitting region of the electroluminescence light emitting sheet is 0.2-0.5 mm, and each width of the spacing regions in the light emitting region of the electroluminescence light emitting sheet is 0.2-0.3 mm.

10. The electroluminescence light emitting sheet as claimed in claim 7, wherein the electrode pair is formed by depositing a metal such as copper, aluminum or the like on a base layer to form a metal layer and etching the deposited metal layer.

11. The electroluminescence light emitting sheet as claimed in claim 7, wherein the electroluminescence light emitting sheet comprises a plurality of electrode pairs.