ILLUMINATION DEVICE

• US 20150338078A1
• Filed: 08/05/2015
• Published: 11/26/2015
• Est. Priority Date: 11/13/2013
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: LU, Su-Tsai, CHUNG, Sheng-Feng, CHEN, Chen-Kun, CHANG, Yi-Ming, YEH, Wen-Yung, YAU, Bao-Shun
• Granted Patent: US 9,395,072 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F21S 6/00 Lighting devices intended to be free-standing F21S9/00, F21S10/00, F21S13/12 take precedence lighting devices specially adapted to be transported from place to place, e.g. lighting devices carried on wheeled supports F21L; details of supports for lighting devices F21V21/00
• CPC Class Codes: F21V 23/003 the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
• CPC Class Codes: F21V 23/0485 the sensor sensing the physical interaction between a user and certain areas located on the lighting device, e.g. a touch sensor
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2115/15 Organic light-emitting diodes [OLED]
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

An illumination device includes an OLED panel, an electrode structure, and a control module. The OLED panel includes a light-emitting layer configured to emit a light beam. The electrode structure is overlaid on the OLED panel. The electrode structure includes a first touch electrode including at least two conductive portions, and the conductive portions of the first touch electrode are electrically connected to the other conductive portions. The control module is electrically connected to the OLED panel and the first touch electrode. The light-emitting layer further includes a light-emitting material, and a width of the light-emitting material is greater than half of a width of the first touch electrode.

Claims

1. An illumination device, comprising:

an OLED panel comprising a light-emitting layer configured to emit a light beam;

an electrode structure, overlaid on the OLED panel, comprising;

a first touch electrode comprising at least two conductive portions, wherein the conductive portions of the first touch electrode are electrically connected to the other conductive portions; and

a control module electrically connected to the OLED panel and the first touch electrode;

wherein the light-emitting layer further comprises a light-emitting material, and a width of the light-emitting material is greater than half of a width of the first touch electrode.

2. The illumination device as claimed in claim 1, wherein the conductive portions of the first touch electrode comprise a first conductive portion and a second conductive portion connected to the first conductive portion, the second conductive portion is disposed on the first conductive portion.

3. The illumination device as claimed in claim 2, wherein the electrode structure further comprises a second touch electrode separated from the first touch electrode, and the first conductive portion and the second touch electrode are located in a plane that is parallel to the OLED panel.

4. The illumination device as claimed in claim 2, wherein the electrode structure further comprises a second touch electrode separated from the first touch electrode, and the second touch electrode is located over the first conductive portion.

5. The illumination device as claimed in claim 1, wherein the conductive portions of the first touch electrode comprise a first conductive portion and a second conductive portion connected to the first conductive portion, the first conductive portion and the second conductive portion are located in a plane that is parallel to the OLED panel.

6. The illumination device as claimed in claim 5, wherein the electrode structure further comprises a second touch electrode separated from the first touch electrode, and the first conductive portion, the second conductive portion, and the second touch electrode are located in a plane that is parallel to the OLED panel.

7. The illumination device as claimed in claim 5, wherein the electrode structure further comprises a second touch electrode separated from the first touch electrode, and the second touch electrode is located over the second conductive portion.

8. The illumination device as claimed in claim 1, wherein the electrode structure further comprises a second touch electrode separated from the first touch electrode, and a dielectric layer between the first touch electrode and the second touch electrode.

9. The illumination device as claimed in claim 1, wherein the conductive portions of the first touch electrode comprise a first conductive portion and a second conductive portion connected to the first conductive portion, wherein the first conductive portion comprises a first resistance, and the second conductive portion comprises a second resistance that is different from the first resistance.

10. The illumination device as claimed in claim 9, wherein the electrode structure further comprises a second touch electrode separated from the first touch electrode, and the second touch electrode comprises a third conductive portion and a fourth conductive portion connected to the third conductive portion, wherein the third conductive portion comprises a third resistance, and the fourth conductive portion comprises a fourth resistance that is different from the third resistance.

11. The illumination device as claimed in claim 10, wherein the second conductive portion is disposed on the first conductive portion, the third conductive portion is disposed on the second conductive portion, and the fourth conductive portion is disposed on the third conductive portion.

12. The illumination device as claimed in claim 10, wherein the first conductive portion and the second conductive portion are located in a first plane that is parallel to the OLED panel, and the third conductive portion and the fourth conductive portion are located in a second plane that is parallel to the OLED panel.

13. The illumination device as claimed in claim 1, wherein the conductive portions of the first touch electrode comprise a first conductive portion and a second conductive portion connected to the first conductive portion, wherein the first conductive portion comprises a first material, and the second conductive portion comprises a second material that is different from the first material.

14. The illumination device as claimed in claim 13, wherein the first material comprises conductive oxide, conductive polymer, carbon nanotube (CNT), graphene, or nano-wire, and the second material comprises nano-wire or metal mesh, or wherein the second material comprises conductive oxide, conductive polymer, carbon nanotube (CNT), graphene, or nano-wire, and the first material comprises nano-wire or metal mesh.

15. The illumination device as claimed in claim 13, wherein the electrode structure further comprises a second touch electrode separated from the first touch electrode, and the second touch electrode comprises a third conductive portion and a fourth conductive portion connected to the third conductive portion, wherein the third conductive portion comprises a third material, and the fourth conductive portion comprises a fourth material that is different from the third material.

16. The illumination device as claimed in claim 1, wherein the electrode structure is a touch panel, the electrode structure generates a touch signal according to a touch event, and the control module controls the light-emitting layer according to the touch signal, wherein the touch event comprises a switch event, a luminance-adjustment event, or a color-temperature adjustment event, wherein the control module controls the light-emitting layer to be enabled or disabled according to the switch event, controls a luminance of the light beam according to the luminance-adjustment event, or controls a color temperature of the light beam according to the color-temperature adjustment event.

17. The illumination device as claimed in claim 1, further comprising a common electrode disposed on the light-emitting layer, wherein the OLED panel further comprises a control electrode disposed under the light-emitting layer;

and the electrode structure further comprises a first dielectric layer overlaid on the common electrode, and the first touch electrode is disposed on the first dielectric layer,

wherein the control module is electrically connected to the control electrode, the common electrode, and the first touch electrode;

wherein the first touch electrode and the common electrode generate a first touch signal according to a first touch event, and the control module controls the light-emitting layer via the control electrode and the common electrode according to the first touch signal.

18. The illumination device as claimed in claim 17, wherein the control module controls a luminance or a color temperature of the light beam, or controls the light-emitting layer to be enabled or disabled according to the first touch event.

19. The illumination device as claimed in claim 17, wherein the common electrode or the control electrode comprises at least two conductive portions, wherein the conductive portions of the common electrode are electrically connected to the other conductive portions of the common electrode, and the conductive portions of the control electrode are electrically connected to the other conductive portions of the control electrode.

20. The illumination device as claimed in claim 19, wherein resistances or materials of the conductive portions of the common electrode are different, and resistances or materials of the conductive portions of the control electrode are different.