Display panel with coil layer for wireless charging

• US 9,622,366 B2
• Filed: 05/10/2013
• Issued: 04/11/2017
• Est. Priority Date: 08/17/2012
• Status: Active Grant

• Current Assignee: E Ink Holdings Incorporated
• Original Assignee: E Ink Holdings Incorporated
• Inventors: Lin, Chin-Wen, Lin, Po-Hsin, Wu, Chi-Liang, Shinn, Ted-Hong
• Primary Examiner(s): Rodas, Richard Isla
• Assistant Examiner(s): HERNANDEZ, MANUEL J
• Application Number:
  US13/891,208
• Publication Number:
  US 20140049882A1
• Time in Patent Office: 1,432 Days
• Field of Search: 320108
• CPC Class Codes: G06F 1/1601 Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays constructional details related to flat displays integrated in a portable computer, e.g. laptop, handheld computer G06F1/1637; constructional details related to television receivers H04N5/64
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction

Abstract

A display panel having a wireless charging function is provided, and the display panel includes a first substrate, an induction coil layer, a display pixel layer, and a second substrate. The induction coil layer is disposed on the first substrate. The induction coil layer includes at least one induction coil. The induction coil layer is adapted for collaborating with a wireless charging power supply, such that the induction coil layer executes the wireless charging function. The display pixel layer is disposed on the induction coil layer. The second substrate is disposed on the display pixel layer.

Claims

1. A display panel having a wireless charging function, the display panel comprising:

a first substrate;

an induction coil layer disposed on the first substrate and comprising induction coils arranged and serially connected in a loop trajectory, and the induction coil layer being adapted for collaborating with a wireless charging power supply to execute the wireless charging function;

a display pixel layer disposed on the induction coil layer, wherein when the display panel is placed on the wireless charging power supply, the induction coil layer is located between the display pixel layer and the wireless charging power supply;

a second substrate disposed on the display pixel layer; and

an electric energy storage device electrically connected to the induction coil layer, wherein when collaborating with the wireless charging power supply to execute the wireless charging function, the display panel uses an induction electric energy generated by the induction coils to execute an image display function; and

when not executing the wireless charging function or being away from the wireless charging power supply, the display panel uses the electric energy stored in the electric energy storage device to execute the image display function.

2. The display panel according to claim 1, wherein the display pixel layer comprises an active area and a peripheral circuit area adjacent to the active area, and the induction coils are disposed in an area of the induction coil layer that corresponds to the peripheral circuit area.

3. The display panel according to claim 2, wherein the induction coils are further disposed in an area of the induction coil layer that corresponds to the active area.

4. The display panel according to claim 1, wherein a shape of one of the induction coils is circular or elliptic.

5. The display panel according to claim 1, wherein a shape of one of the induction coils is polygonal.

6. The display panel according to claim 1, wherein the induction coils are adapted for receiving an induction electromagnetic wave supplied by the wireless charging power supply and generating the induction electric energy accordingly.

7. The display panel according to claim 1, wherein the induction coil layer comprises a first output end and a second output end and outputs the induction electric energy generated by the induction coil layer to the electric energy storage device via the first output end and the second output end.

8. The display panel according to claim 1, wherein the first substrate is a hard substrate.

9. The display panel according to claim 1, wherein the first substrate is a flexible substrate.

10. The display panel according to claim 1, wherein a material of the induction coils comprises a metal or a conductive metal oxide.

11. A display panel having a wireless charging function, the display panel comprising:

a first substrate;

an induction coil layer disposed on the first substrate and comprising coplanar induction coils arranged and serially connected along a loop trajectory on a plane, and the induction coil layer being adapted for collaborating with a wireless charging power supply to execute the wireless charging function;

a display pixel layer disposed on the induction coil layer, wherein when the display panel is placed on the wireless charging power supply, the induction coil layer is located between the display pixel layer and the wireless charging power supply;

a second substrate disposed on the display pixel layer; and

an electric energy storage device electrically connected to the induction coil layer, wherein when collaborating with the wireless charging power supply to execute the wireless charging function, the display panel uses an induction electric energy generated by the induction coils to execute an image display function; and

when not executing the wireless charging function or being away from the wireless charging power supply, the display panel uses an electric energy stored in the electric energy storage device to execute the image display function.