Light emitting display device and method of manufacturing the same

• US 9,812,513 B2
• Filed: 12/03/2014
• Issued: 11/07/2017
• Est. Priority Date: 01/20/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Hong, Jung-Moo, Kim, Young Do
• Primary Examiner(s): Eurice, Michael J
• Application Number:
  US14/559,730
• Publication Number:
  US 20150206926A1
• Time in Patent Office: 1,070 Days
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means
• 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 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 50/865 comprising light absorbing layers, e.g. light-blocking layers
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels
• 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
• CPC Class Codes: H10K 59/87 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 59/8792 comprising light absorbing layers, e.g. black layers

Abstract

A light emitting display device including a light emitting display panel including light emitting areas, a non-light emitting area disposed adjacent to the light emitting areas, and light emitting devices respectively disposed in the light emitting areas, and a touch panel disposed on the display panel, the touch panel including color filters respectively facing the light emitting areas.

Claims

1. A light emitting display device, comprising:

a display panel comprising;

light emitting areas;

a non-light emitting area disposed adjacent to the light emitting areas;

light emitting devices respectively disposed in the light emitting areas; and

a sealing layer disposed to directly cover the light emitting devices; and

a touch panel disposed on the display panel, the touch panel comprising color filters respectively facing the light emitting areas,

wherein the light emitting devices comprise a first light emitting device configured to display a first color and a second light emitting device configured to display a second color which is different from the first color,

wherein the color filters comprise a first color filter having the first color and a second color filter having the second color, and

wherein the sealing layer is disposed between the light emitting devices and the color filters.

2. The light emitting display device of claim 1, further comprising an adhesive member configured to adhere an upper surface of the display panel and a lower surface of the touch panel.

3. The light emitting display device of claim 1, wherein the touch panel comprise:

a first base substrate comprising an upper surface and an opposing lower surface; and

a conductive layer disposed on the upper surface of the first base substrate,

wherein the color filters are disposed on the lower surface of the first base substrate.

4. The light emitting display device of claim 1, wherein the light emitting devices comprises organic light emitting diodes.

5. The light emitting display device of claim 1, wherein the touch panel further comprises a black matrix facing the non-light emitting area.

6. The light emitting display device of claim 5, wherein the black matrix is disposed on a same layer as the color filters.

7. The light emitting display device of claim 1, wherein the display panel comprises:

a second base substrate;

a light emitting device layer disposed on the second base substrate, the light emitting device layer comprising the light emitting devices; and

the sealing layer disposed on the light emitting device layer, the sealing layer configured to protect the light emitting device layer.

8. The light emitting display device of claim 7, wherein the sealing layer comprises inorganic layers.

9. The light emitting display device of claim 7, wherein each of the light emitting devices has a substantially the same area as a corresponding one of the light emitting areas when viewed in a plan view.

10. A light emitting display device, comprising:

a display panel comprising;

a first pixel area;

a second pixel area;

a non-light emitting area disposed adjacent to the first pixel area and the second pixel area;

a first light emitting device and a second light emitting device respectively facing the first pixel area and the second pixel area; and

a sealing layer overlapping the first light emitting device and the second light emitting device; and

a touch panel disposed on the display panel, the touch panel comprising a first color filter and a second color filter respectively facing the first pixel area and the second pixel area; and

an adhesive member configured to adhere an upper surface of the display panel and a lower surface of the touch panel,

wherein the first light emitting device and the second light emitting device display different colors from each other,

wherein the first color filter and the second color filter respectively have same color as a color displayed by the corresponding light emitting device,

wherein the sealing layer is disposed between the first and second light emitting devices and the color filters, and

wherein the first color filter is configured to transmit about 75% of light emitted from the corresponding light emitting device.

11. The light emitting display device of claim 10, wherein each of the first light emitting device and the second light emitting devices comprises an organic light emitting diode.

12. The light emitting display device of claim 10, wherein the first color filter and the second color filter are disposed on the lower surface of the touch panel.

13. The light emitting display device of claim 10, wherein the touch panel further comprises a black matrix disposed on the lower surface of the touch panel and facing the non-light emitting area.

14. The light emitting display device of claim 10, wherein each of the first pixel area and the second pixel area comprises:

a light emitting area comprising one of the first light emitting device and the second light emitting device; and

a circuit area comprising a circuit part configured to control the first light emitting device or second light emitting device.

15. The light emitting display device of claim 14, wherein each of the first color filter and the second color filter overlaps the light emitting area.

16. A method of manufacturing a light emitting display device, comprising:

forming a first color filter and a second color filter respectively on a surface of a touch panel, the first color filter and the second color filter respectively corresponding a first pixel area and a second pixel area of a display panel; and

attaching the touch panel to the display panel, such that the first color filter and the second color filter are disposed between the touch panel and the display panel, the first color filter and the second color filter respectively facing the first pixel area and the second pixel area,

wherein the display panel comprises a first light emitting device, a second light emitting device display different colors from each other, and a sealing layer overlapping the first light emitting device and the second light emitting device,

wherein the first color filter and the second color filter respectively have same color as a color displayed by the corresponding light emitting device,

wherein the sealing layer is disposed between the first and second light emitting devices and the color filters, and

wherein the first color filter is configured to transmit about 75% of light having the first color emitted from the first light emitting device.

17. The method of claim 16, further comprising disposing an adhesive member on the surface of the touch panel or on the surface of the display panel, before attaching the touch panel to the display panel.

18. The method of claim 16, further comprising forming a black matrix on the surface of the touch panel and facing the non-light emitting area, before attaching the touch panel to the display panel.