DISPLAY DEVICE AND ELECTRONIC UNIT

• US 20120249454A1
• Filed: 02/27/2012
• Published: 10/04/2012
• Est. Priority Date: 03/31/2011
• Status: Active Grant

• Current Assignee: JDI Design and Development GK
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Teraguchi, Shinichi, Kodate, Manabu, Noh, Seonghee, Omoto, Keisuke
• Granted Patent: US 8,970,520 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: H10K 59/00 Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens

Abstract

A display device includes: a first substrate having a light extraction plane; a plurality of first electrodes; an organic electroluminescence layer; a second electrode; a second substrate; a sensing electrode allowing an object to be detected; and a driving electrode forming a capacitance with the sensing electrode and allowing the object to be detected. The first electrodes, the organic electroluminescence layer, the second electrode, and the second substrate are provided in this order on the first substrate. The sensing electrode and the driving electrode are provided, in this order from a first substrate side, between the first substrate and the second substrate.

Claims

1. A display device, comprising:

a first substrate having a light extraction plane;

a plurality of first electrodes;

an organic electroluminescence layer;

a second electrode;

a second substrate, wherein the first electrodes, the organic electroluminescence layer, the second electrode, and the second substrate are provided in this order on the first substrate;

a sensing electrode allowing an object to be detected; and

a driving electrode forming a capacitance with the sensing electrode and allowing the object to be detected, the sensing electrode and the driving electrode being provided, in this order from a first substrate side, between the first substrate and the second substrate.

2. The display device according to claim 1, further comprising, in a display region:

a plurality of pixel sections provided corresponding to the first electrodes; and

one or more sensor sections including the driving electrode and the sensing electrode.

3. The display device according to claim 2, further comprising a transistor section provided on the first substrate with an insulating film interposed therebetween,

wherein the sensing electrode is provided between the first substrate and the insulating film.

4. The display device according to claim 3, further comprising a leakage prevention metal layer provided in a same layer as a layer of the sensing electrode in a region corresponding to the pixel sections.

5. The display device according to claim 2, wherein

the driving electrode includes a plurality of driving electrodes,

the sensing electrode includes a plurality of sensing electrodes, and

the driving electrodes and the sensing electrodes extend to intersect with each other.

6. The display device according to claim 1, wherein the driving electrode is provided in a same layer as a layer of the first electrodes.

7. The display device according to claim 6, wherein

the first electrodes are two-dimensionally arranged in matrix, and

the driving electrode extends in one direction in a region between the first electrodes.

8. The display device according to claim 1, further comprising:

a scanning line;

a signal line; and

a power source line,

the scanning line, the signal line, and the power source line performing display driving of the pixel sections, and the scanning line serving as the driving electrode.

9. The display device according to claim 1, further comprising:

a scanning line;

a signal line; and

a power source line,

the scanning line, the signal line, and the power source line performing display driving of the pixel sections, and the power source line serving as the driving electrode.

10. The display device according to claim 1, further comprising:

a scanning line;

a signal line; and

a power source line,

the scanning line, the signal line, and the power source line performing display driving of the pixel sections, and the signal line serving as the driving electrode.

11. The display device according to claim 1, further comprising a detection circuit detecting, based on a detection signal, a presence or absence of the object on the first substrate side, the detection signal being obtained from the sensing electrode by application of a driving signal to the driving electrode.

12. A display device, comprising:

a first substrate;

a plurality of first electrodes;

an organic electroluminescence layer;

a second electrode;

a second substrate having a light extraction plane, wherein the first electrodes, the organic electroluminescence layer, the second electrode, and the second substrate are provided in this order on the first substrate;

a driving electrode provided between the first substrate and the second substrate, the driving electrode allowing an object to be detected; and

a sensing electrode provided on a second substrate side of the driving electrode, the sensing electrode forming a capacitance with the driving electrode and allowing the object to be detected.

13. The display device according to claim 12, further comprising, in a display region:

a plurality of pixel sections provided corresponding to the first electrodes; and

one or more sensor sections including the driving electrode and the sensing electrode.

14. The display device according to claim 13, wherein the sensing electrode is provided on the second substrate.

15. The display device according to claim 14, wherein the second electrode serves as the driving electrode, or is provided in a same layer as a layer of the driving electrode.

16. The display device according to claim 14, further comprising a conductive black matrix layer on the second electrode, the conductive black matrix layer serving as the driving electrode.

17. The display device according to claim 14, wherein the driving electrode is provided between the second electrode and the second substrate.

18. The display device according to claim 13, further comprising:

a scanning line;

a signal line; and

a power source line,

the scanning line, the signal line, and the power source line performing display driving of the pixel sections,

wherein

the sensing electrode is provided in a same layer as a layer of the second electrode, and

the driving electrode is provided in a same layer as a layer of the first electrodes, or any one of the scanning line, the signal line, and the power source line serves as the driving electrode.

19. An electronic unit with a display device, the display device comprising:

a first substrate having a light extraction plane;

a plurality of first electrodes;

an organic electroluminescence layer;

a second electrode;

a second substrate, wherein the first electrodes, the organic electroluminescence layer, the second electrode, and the second substrate are provided in this order on the first substrate;

a sensing electrode allowing an object to be detected; and

a driving electrode forming a capacitance with the sensing electrode and allowing the object to be detected, the sensing electrode and the driving electrode being provided, in this order from a first substrate side, between the first substrate and the second substrate.

20. An electronic unit with a display device, the display device comprising:

a first substrate;

a plurality of first electrodes;

an organic electroluminescence layer;

a second electrode;

a second substrate having a light extraction plane, wherein the first electrodes, the organic electroluminescence layer, the second electrode, and the second substrate are provided in this order on the first substrate;

a driving electrode provided between the first substrate and the second substrate, the driving electrode allowing an object to be detected; and

a sensing electrode provided on a second substrate side of the driving electrode, the sensing electrode forming a capacitance with the driving electrode and allowing the object to be detected.