Display panel and sensing display panel

• US 10,670,940 B2
• Filed: 10/30/2017
• Issued: 06/02/2020
• Est. Priority Date: 11/30/2016
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute, Intellectual Property Innovation Corporation
• Original Assignee: Industrial Technology Research Institute
• Inventors: Chang, Chih-Chia, Huang, Yi-Hsiang, Chang, Kai-Ming, Chen, Kuan-Ting
• Primary Examiner(s): Lee, Jr., Kenneth B
• Application Number:
  US15/796,867
• Publication Number:
  US 20180149944A1
• Time in Patent Office: 946 Days
• Field of Search: None
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133555 Transflectors
• CPC Class Codes: G02F 1/23 for the control of the colour G02F1/03 - G02F1/21 take precedence
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/042 by opto-electronic means
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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

Abstract

A display panel including a substrate, a display device, a dielectric layer, and an optical resonance structure is provided. The substrate has a layout area and a light transmitting area located outside the layout area. The display device is disposed on the layout area of the substrate. The display device includes a first display electrode, a second display electrode, and a display media layer deposited between the first display electrode and the second display electrode. The dielectric layer is disposed on the substrate and covers the display device. The optical resonance structure is disposed on the dielectric layer and distributed correspondingly to the display device. The optical resonance structure includes a first transflective layer and a second transflective layer stacked on the display device and separated from each other.

Claims

1. A display panel, comprising:

a substrate having a layout area and a light transmitting area located outside the layout area;

a display device disposed on the layout area of the substrate, and the display device comprising a first display electrode, a second display electrode, and a display media layer disposed between the first display electrode and the second display electrode;

a dielectric layer disposed on the substrate and cover the display device; and

an optical resonance structure disposed on the dielectric layer and distributed correspondingly to the display device, and the optical resonance structure comprising a first transflective layer and a second transflective layer stacked on the display device and separated from each other, wherein the first transflective layer overlaps with the second transflective layer, and the first transflective layer of the optical resonance structure is a first sensing circuit of a sensing device, the second transflective layer of the optical resonance structure is a second sensing circuit of the sensing device.

2. The display panel as claimed in claim 1, further comprising a sensing device disposed on the dielectric layer and the layout area of the substrate, wherein the sensing device comprises a first sensing circuit and a second sensing circuit electrically insulated from each other.

3. The display panel as claimed in claim 1, further comprising an insulating layer located between the first transflective layer and the second transflective layer.

4. The display panel as claimed in claim 1, further comprising a first sensing circuit, wherein the first transflective layer and the second transflective layer of the optical resonance structure form a second sensing circuit, and the first sensing circuit and the second sensing circuit form a sensing device.

5. The display panel as claimed in claim 4, further comprising a light transmitting conductive layer located between the first transflective layer and the second transflective layer.

6. The display panel as claimed in claim 1, further comprising a sensing device, wherein the sensing device comprises a plurality of sensing circuits, a plurality of conductive vias, and at least one bridge electrode, the plurality of conductive vias are located between the plurality of sensing circuits and the at least one bridge electrode, and a part of the plurality of sensing circuits respectively electrically connect to the at least one bridge electrode through the plurality of conductive vias.

7. The display panel as claimed in claim 1, wherein the first display electrode and the second display electrode comprise at least one light transmitting electrode.

8. The display panel as claimed in claim 1, wherein the second display electrode is disposed on the light transmitting area.

9. The display panel as claimed in claim 1, wherein the display panel further comprises a light guide structure disposed on the light transmitting area of the substrate.

10. A sensing display panel, comprising:

a substrate having a layout area and a light transmitting area located outside the layout area;

a display device disposed on the layout area of the substrate, and the display device comprising a first display electrode, a second display electrode, and a display media layer located between the first display electrode and the second display electrode;

a dielectric layer disposed on the substrate and cover the display device; and

a sensing device disposed on the layout area of the substrate and cover the dielectric layer, and the sensing device comprising a first sensing circuit, a second sensing circuit, and an insulating layer located between the first sensing circuit and the second sensing circuit, wherein the first sensing circuit and the second sensing circuit comprise a transflective electrode, and the first sensing circuit and the second sensing circuit are stacked on the display device to form an optical resonance structure, and the first sensing circuit overlaps with the second sensing circuit, wherein the optical resonance structure comprising a first transflective layer and a second transflective layer stacked on the display device and separated from each other, wherein the first transflective layer overlaps with the second transflective layer, and the first transflective layer of the optical resonance structure is the first sensing circuit of the sensing device, the second transflective layer of the optical resonance structure is the second sensing circuit of the sensing device.

11. The sensing display panel as claimed in claim 10, wherein the first display electrode and the second display electrode comprise at least one light transmitting electrode.

12. The sensing display panel as claimed in claim 10, wherein the second display electrode is disposed on the light transmitting area.

13. The sensing display panel as claimed in claim 10, wherein the sensing display panel further comprises a light guide structure disposed on the light transmitting area of the substrate.

14. A sensing display panel, comprising:

a substrate having a layout area and a light transmitting area located outside the layout area;

a display device disposed on the layout area of the substrate, and the display device comprising a first display electrode, a second display electrode, and a display media layer located between the first display electrode and the second display electrode;

a dielectric layer disposed on the substrate and cover the display device; and

a sensing device disposed on the layout area of the substrate and cover the dielectric layer, and the sensing device comprising a first sensing circuit and a second sensing circuit, wherein the first sensing circuit comprises a first transflective electrode, and the first transflective electrode of the first sensing circuit comprises a first sensing portion and a second sensing portion that are stacked on the display device to form an optical resonance structure, and the first sensing portion overlaps with the second sensing portion, wherein the optical resonance structure comprising a first transflective layer and a second transflective layer stacked on the display device and separated from each other, wherein the first transflective layer overlaps with the second transflective layer, and the first transflective layer of the optical resonance structure is the first sensing portion of the sensing device, the second transflective layer of the optical resonance structure is the second sensing portion of the sensing device.

15. The sensing display panel as claimed in claim 14, wherein the first sensing circuit further comprises a first light transmitting conductive layer disposed between the first sensing portion and the second sensing portion, and stacked on the display device.

16. The sensing display panel as claimed in claim 14, wherein the second sensing circuit comprises a second transflective electrode, and the second transflective electrode of the second sensing circuit comprises a third sensing portion and a fourth sensing portion that are stacked on the display device to form the optical resonance structure.

17. The sensing display panel as claimed in claim 16, wherein the second light transmitting sensing circuit further comprises a second light transmitting conductive layer disposed between the third sensing portion and the fourth sensing portion, and stacked on the display device.

18. The sensing display panel as claimed in claim 14, wherein the first display electrode and the second display electrode comprises at least one light transmitting electrode.

19. The sensing display panel as claimed in claim 14, wherein the second display electrode is disposed on the light transmitting area.