ORGANIC LIGHT EMITTING DISPLAY PANEL AND FORCE-SENSING DISPLAY DEVICE

• US 20170221971A1
• Filed: 04/14/2017
• Published: 08/03/2017
• Est. Priority Date: 12/13/2016
• Status: Active Grant

• Current Assignee: Tianma Microelectronics Company Limited, Wuhan Tianma Micro-Electronics Company Limited (Wuhan Donghu New Technology Development Zone Production Promotion Centre), Wuhan Tianma Microelectronics Company Limited Shanghai Branch
• Original Assignee: Shanghai Tianma AM-OLED Co. Ltd (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Inventors: SHEN, Yongcai, QIAN, Dong, XIN, Yu, LI, Wang, FAN, Qingjie
• Granted Patent: US 10,636,848 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0447 Position sensing using the local deformation of sensor cells
• CPC Class Codes: H10K 50/81 Anodes
• CPC Class Codes: H10K 50/82 Cathodes
• CPC Class Codes: H10K 50/8428 Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens

Abstract

An organic light emitting display panel is provided. The organic light emitting display panel includes a first substrate; a second substrate disposed to the first substrate; and a force sensing layer. The force sensing layer includes a first electrode; a second electrode; and a first insulating layer positioned between the first electrode and the second electrode. The second electrode is multiplexed with at least one second conductive layer on the second substrate.

Claims

1. An organic light emitting display panel, comprising:

a first substrate;

a second substrate disposed to the first substrate; and

a force sensing layer, comprising;

a first electrode;

a second electrode; and

a first insulating layer positioned between the first electrode and the second electrode,

wherein the second electrode is multiplexed with at least one second conductive layer on the second substrate.

2. The organic light emitting display panel according to claim 1, wherein:

the first substrate is a packaging substrate,

the second substrate is an array substrate, and

the array substrate includes a pixel definition layer, a reflective electrode layer, and a plurality of optical spacers.

3. The organic light emitting display panel according to claim 2, wherein the second electrode is at least partially multiplexed with the reflective electrode layer.

4. The organic light emitting display panel of claim 2, wherein the array substrate further comprises an array metal layer, and the second electrode is at least partially multiplexed with the array metal layer.

5. The organic light emitting display panel according to claim 2, wherein the array substrate further comprises an OLED cathode layer, and the first electrode is at least partially multiplexed with the OLED cathode layer.

6. The organic light emitting display panel according to claim 1, wherein the first electrode is a first conductive layer provided on the first substrate.

7. The organic light emitting display panel according to claim 6, further comprising:

a touch sensor provided on the first substrate, wherein the touch sensor includes at least one touch layer.

8. The organic light emitting display panel according to claim 7, wherein the first electrode is multiplexed with at least one layer of the touch layer;

or the touch sensor is disposed on a side of the first substrate away from the second substrate, and the first electrode is disposed on a side of the first substrate close to the second substrate.

9. The organic light emitting display panel according to claim 2, wherein the first insulating layer includes one or both of the pixel defining layer or the plurality of optical spacers.

10. The organic light emitting display panel according to claim 7, wherein the force sensing layer and the touch layer share a same driving chip.

11. The organic light emitting display panel according to claim 1, wherein:

the organic light emitting display panel includes a display area and a non-display area surrounding the display area, and

the force sensing layer is provided in the non-display area.

12. The organic light emitting display panel according to claim 1, wherein the second electrode is divided into a plurality of blocks on the organic light emitting display panel.

13. A force sensing display device, comprising:

an organic light emitting display panel, including;

a first substrate;

a second substrate disposed opposite to the first substrate; and

a force sensing layer, including;

a first electrode;

a second electrode; and

a first insulating layer positioned between the first electrode and the second electrode,

wherein the second electrode is multiplexed with at least one second conductive layer on the second substrate.

14. The force sensing display device according to claim 13, wherein:

the organic light emitting display panel further comprises a touch layer, and

the force sensing layer and the touch layer share a same drive chip.

15. The force sensing display device according to claim 14, wherein the organic light emitting display panel, the force sensing layer, and the touch layer share file same drive chip.

16. The force sensing display device of claim 13, wherein:

the organic light emitting display panel further comprises a touch layer,

the first electrode is multiplexed with at least one layer of the touch layer, and

the second electrode is at least partially multiplexed with a reflective electrode layer of the second substrate.