Method of manufacturing organic light emitting display device

• US 9,847,486 B2
• Filed: 11/04/2016
• Issued: 12/19/2017
• Est. Priority Date: 03/10/2010
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Park, Byoung-Hee, Lee, Joo-Hyeon, Chung, Jin-Koo
• Primary Examiner(s): Payen, Marvin
• Application Number:
  US15/343,315
• Publication Number:
  US 20170077404A1
• Time in Patent Office: 410 Days
• CPC Class Codes: H01L 29/7869 having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
• CPC Class Codes: H10K 2102/3031 Two-side emission, e.g. transparent OLEDs [TOLED]
• CPC Class Codes: H10K 50/82 Cathodes
• CPC Class Codes: H10K 50/826 Multilayers, e.g. opaque multilayers
• CPC Class Codes: H10K 50/828 Transparent cathodes, e.g. comprising thin metal layers
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 59/121 characterised by the geometry or disposition of pixel elements
• CPC Class Codes: H10K 59/126 Shielding, e.g. light-blocking means over the TFTs
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels
• CPC Class Codes: H10K 71/621 Providing a shape to conductive layers, e.g. patterning or selective deposition

Abstract

An organic light emitting display device having high transmittance with respect to external light and a method of manufacturing the same. The organic light emitting display device includes a substrate; a plurality of pixels formed on the substrate, each of the pixels including a first region that emits light and a second region that transmits external light; a plurality of thin film transistors disposed in the first region of each pixel; a plurality of first electrodes disposed in the first region of each pixel and electrically connected to the thin film transistors, respectively; a second electrode formed opposite to the plurality of first electrodes and comprising a plurality of transmission windows corresponding to the second regions; and an organic layer formed between the first electrodes and the second electrode. The transmission windows can be formed in the second electrode, that is, a cathode.

Claims

1. A method of manufacturing an organic light emitting display device, the method comprising:

defining a plurality of pixels on a substrate, each of the pixels comprising a first region that emits light and a second region that transmits external light;

forming a plurality of thin film transistors in the first region of each pixel;

forming a plurality of first electrodes electrically connected to the plurality of thin film transistors, respectively, in the first region of each pixel;

forming an organic layer on the plurality of first electrodes; and

forming a second electrode on the organic layer in the first region by using a mask having a pattern of apertures corresponding to the first region, such that the formed second electrode defines a plurality of transmission windows that each correspond to the second region, and such that the formed second electrode is absent from the second region.

2. The method of claim 1, wherein the apertures are separated from each other at regular intervals.

3. The method of claim 2, wherein the apertures are separated from each other at intervals smaller than or equal to a distance corresponding to at least one pixel.