Electroluminescence light emitting display system

• US 7,109,661 B2
• Filed: 05/29/2003
• Issued: 09/19/2006
• Est. Priority Date: 08/30/2002
• Status: Expired due to Fees

• Current Assignee: TOMY Company Limited
• Original Assignee: TOMY Company Limited
• Inventors: Watanabe, Kimitaka, Yamanaka, Hiroyuki
• Primary Examiner(s): Vu, David
• Application Number:
  US10/447,275
• Publication Number:
  US 20040041516A1
• Time in Patent Office: 1,209 Days
• Field of Search: 315/169.1, 315/169.3, 313/505, 313/507, 313/506, 313/509, 313/510, 405/44
• US Class Current: 315/169.3
• 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 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H10K 50/805 Electrodes
• CPC Class Codes: H10K 59/10 OLED displays
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

An electroluminescent light emitting system, having an electroluminescent light-emitting layer containing electroluminescent light-emitting elements, one surface side of which receives an AC electric field forming material thereon; an electrode section including a first electrode layer with a predetermined first pattern and a second electrode layer with a predetermined second pattern, which are disposed relatively close to but electrically spaced from each other on another surface side of the electroluminescent light emitting layer; and a waterproof resin layer provided between at least one of the first electrode layer and the second electrode layer electrode section, and the electroluminescent light-emitting layer. The AC electric field forming material on the one surface side enables an AC electric field to be generated in the electroluminescent light-emitting layer with an AC voltage applied between the first electrode layer and the second electrode layer.

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 section comprising an electrode pair including first and second electrodes which are electrically separated from each other with a spacing region and disposed in one surface side of the light-emitting layer with a predetermined arrangement,

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

a body for supporting the electroluminescence light emitting sheet; and

a control unit for controlling execution of voltage application to the first and second electrodes of the electrode pair by the voltage application unit,

wherein when a chart for light emitting is drawn on the other surface side of the light-emitting layer by putting an electrically conductive material thereon and a voltage application between the electrode pair is performed by the voltage application unit, a portion of the light-emitting layer corresponding to the electrically conductive material emits light, and the system allows repeated drawing or removing by using a removing member for removing the electrically conductive material put on; and

the control unit realizes a plurality of light emitting modes which are different from one another in light emitting system and/or light emitting range, of the chart for light emitting.

2. The electroluminescence light emitting display system as claimed in claim 1, wherein the electrode section comprises a base film, and a metal layer with a predetermined pattern, which are formed by depositing a metal on the base film and by etching the deposited metal layer to have the predetermined pattern.

3. The electroluminescence light emitting display system as claimed in claim 1, wherein the electrode section comprises:

a first line layer including a plurality of first lines which are provided in parallel to one another in a first direction;

a second line layer including a plurality of second lines which are provided in parallel to one another in a direction perpendicular to the first direction; and

a terminal layer including a plurality of first terminals which are connected to the first line layer by passing through the second line layer, and a plurality of second terminals which are connected to the second line layer, the first terminals and the second terminals being alternately arranged in a predetermined order, in a plan view,

wherein the first line layer, the second line layer and the terminal layer are laminated in order, and the terminal layer is adhered to one surface side of the light emitting layer.

4. The electroluminescence light emitting display system as claimed in claim 1, wherein the electroluminescence light emitting sheet comprises a waterproof layer between the light-emitting layer and the electrode section.

5. The electroluminescence light emitting display system as claimed in claim 1, wherein a protective layer is fixed on the other surface side of the light-emitting layer and the electrically conductive material is put thereon.

6. The electroluminescence light emitting display system as claimed in claim 1, wherein the chart for light emitting is drawn by a pen having an impregnating material impregnating a liquid electrically conductive material.

7. The electroluminescence light emitting display system as claimed in claim 1, wherein the voltage application unit comprises a dry cell as a power source and converts a DC voltage supplied from the dry cell to an AC voltage, to apply the AC voltage between the first and second electrodes of the electrode pair.

8. The electroluminescence light emitting display system as claimed in claim 1, wherein the body comprises a holding portion for holding at least one of a pen having an impregnating material impregnating a liquid electrically conductive material and the removing member.

9. The electroluminescence light emitting display system as claimed in claim 1, wherein the electrode section comprises a plurality of electrode pairs which are disposed in a predetermined arrangement, and the control unit realizes a plurality of light emitting modes which are different from one another in light emitting system and/or light emitting range, of the chart for light emitting, by controlling execution of voltage application to the first and second electrodes of each electrode pair by the voltage application unit.

10. The electroluminescence light emitting display system an claimed in claim 9, wherein the system further comprises a selection section for selecting one from a plurality of light emitting modes, and the control unit controls execution of voltage application to the first and second electrodes of each electrode pair by the voltage application unit, on the basis of the light-emitting mode selected by the selection section.

11. The electroluminescence light emitting display system as claimed in claim 10, wherein the plurality of light-emitting modes include at least a plurality of modes having light emitting systems different from one another, and the light emitting systems include at least two selected from (1) an entirely light-emitting mode in which execution of voltage application to all of the electrode pairs is controlled simultaneously, (2) an entirely blinking mode in which execution of voltage application to all of the electrode pairs is controlled simultaneously and intermittently, (3) a sequentially light-emitting mode in which execution of voltage application to the electrode pairs is controlled in a predetermined order, and (4) a wavy light-emitting mode in which execution of voltage application to the electrode pairs is controlled in a predetermined order and intermittently.

12. The electroluminescence light emitting display system as claimed in claim 9, wherein the system further comprises a setting member for setting a light emitting region and/or a light emitting form, and the control unit selects a part of the electrode pairs, to control execution of voltage application to the selected electrode pair by the voltage application unit.

13. The electroluminescence light emitting display system as claimed in claim 1, further comprising a waterproof layer provided in a front side of the electrode section, the waterproof layer being colored so as to make the electrode pattern of the electrode section invisible from the front side.

14. The electroluminescent light emitting display system as claimed in claim 1, wherein the metal is copper or aluminum.

16. The electroluminescence light emitting display system as claimed in claim 1, wherein the first electrodes is a common electrode which corresponds to the plurality of second electrodes.

17. The electroluminescence light emitting display system as claimed in claim 1, wherein the electrode section comprises a plurality of electrode pairs that are substantially rectilinearly arranged.

15. An electroluminescence light emitting display system comprising:

an electroluminescence light emitting sheet including a light-emitting layer containing electroluminescence light-emitting elements therein, and an electrode section having an electrode pair including first and second electrodes which are electrically separated from each other with a spacing region and disposed in one surface side of the light-emitting layer with a predetermined arrangement;

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

a body for supporting the electroluminescence light emitting sheet; and

a control unit for controlling execution of voltage application to the first and second electrodes of the electrode pair by the voltage application unit,

wherein when a chart for light emitting is drawn on the other surface side of the light-emitting layer by putting an electrically conductive material thereon and a voltage application between the electrode pair is performed by the voltage application unit, a portion of the light-emitting layer corresponding to the electrically conductive material emits light, and the system allows repeated drawing or removing by using a removing member for removing the electrically conductive material; and

the control unit realizes a plurality of light emitting modes which are different from one another in the light emitting system and/or light emitting range, of the chart for light emitting,

wherein the electroluminescence light emitting sheet includes a waterproof layer between the light-emitting layer and the electrode section,

wherein the electrode section includes a base film, and a metal layer with a predetermined pattern, which are formed by depositing a metal on the base film and by etching the deposited metal layer to have the predetermined pattern, and

wherein a protective layer is fixed on the other surface side of the light-emitting layer and the electrically conductive material is put thereon.