ELECTRONIC BLACKBOARD

• US 20110310056A1
• Filed: 06/14/2011
• Published: 12/22/2011
• Est. Priority Date: 06/18/2010
• Status: Abandoned Application

• Current Assignee: Arolltech Co., Ltd.
• Original Assignee: Arolltech Co., Ltd.
• Inventors: CHANG, YIH
• Application Number:
  US13/159,790
• Publication Number:
  US 20110310056A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: B43L 1/06 rigid
• CPC Class Codes: B43L 1/10 Writing surfaces thereof
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G09B 5/02 with visual presentation of the material to be studied, e.g. using film strip

Abstract

An electronic blackboard comprises an addressable light-emitting board and a touch panel. The touch panel is stacked on the surface of the addressable light-emitting board. The touch panel includes a plurality of sensing areas arranged in an array, and the addressable light-emitting board includes a plurality of light-emitting areas corresponding to the sensing areas. When one of the sensing areas generates a sensing signal by a finger or pen, the corresponding light-emitting area is lit and therefore creates clear white trace on a black background to become an electronic blackboard.

Claims

1. An electronic blackboard, comprising:

an addressable light-emitting board; and

a touch panel, comprising a plurality of sensing areas arranged in an array and stacked on a surface of the addressable light-emitting board;

wherein the addressable light-emitting board comprises a plurality of light-emitting areas corresponding to the sensing areas, and when one of the sensing areas generates a sensing signal, the corresponding light-emitting area is lit to form a clear white trace on a black background.

2. The electronic blackboard of claim 1, wherein the touch panel is a transparent capacitive touch panel, a transparent resistive touch panel, an optical touch panel, or a surface acoustic wave touch panel.

3. The electronic blackboard of claim 1, wherein the addressable light-emitting board is an organic electroluminescence display or addressable light-emitting light source or an inorganic electroluminescence display.

4. The electronic blackboard of claim 3, wherein the organic electroluminescence display or addressable light-emitting light source comprises a substrate, an anode, a hole transport layer, a light-emitting layer, an electron transport layer, and a cathode stacked on the substrate in sequence.

5. The electronic blackboard of claim 4, wherein the touch panel is positioned on a surface of the substrate, and an opposite surface of the substrate is in contact with the anode.

6. The electronic blackboard of claim 4, wherein the touch panel is positioned between the anode and the substrate.

7. The electronic blackboard of claim 4, wherein the touch panel is positioned on a surface of the cathode.

8. The electronic blackboard of claim 4, wherein the electroluminescence display or addressable light-emitting light source further comprises a protecting cover, and the protecting cover together with the substrate seals the anode, the hole transport layer, the light-emitting layer, the electron transport layer, and the cathode.

9. The electronic blackboard of claim 8, wherein the touch panel is positioned on a surface of the protecting cover.

10. The electronic blackboard of claim 8, wherein the touch panel is positioned on a surface of the protecting cover, and the surface of the protecting cover on which the touch panel is positioned is adjacent to the cathode.

11. The electronic blackboard of claim 1, wherein each sensing area is a sensing electrode.

12. The electronic blackboard of claim 11, wherein the sensing electrode is conductive lines arranged in a mesh or grid network.

13. The electronic blackboard of claim 1, further comprising a control circuit, wherein the control circuit processes the sensing signal of the touch panel and drives the luminescence of each light-emitting area of the addressable light-emitting board and restore the control and driving information.

14. The electronic blackboard of claim 1, wherein the addressable light-emitting board is a bottom-emission type or top-emission type.

15. The electronic blackboard of claim 1, wherein the addressable light-emitting board is an electroluminescence display or addressable light-emitting light source.