Organic light emitting display with pixels having different shapes and manufacturing method thereof

• US 8,698,130 B2
• Filed: 11/26/2007
• Issued: 04/15/2014
• Est. Priority Date: 04/06/2007
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Group)
• Original Assignee: Samsung Display Company Limited (Samsung Group)
• Inventors: Kim, Jongyun
• Primary Examiner(s): Dickey, Thomas L
• Application Number:
  US11/986,864
• Publication Number:
  US 20080246027A1
• Time in Patent Office: 2,332 Days
• Field of Search: 257/40, 257/E51.002, 257/E51.019
• US Class Current: 257/40
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels
• CPC Class Codes: H10K 71/70 Testing, e.g. accelerated lifetime tests

Abstract

An organic light emitting display and a fabricating method thereof, where the display has sub-pixels of various types, which have distinctive shapes formed therein according to type is disclosed. Pixels of a particular type e.g., red, green, or blue, can be identified through visual recognition of the distinctive pattern.

Claims

1. An organic light emitting display, comprising:

a substrate; and

a plurality of pixels of at least first and second primary colors formed on the substrate, wherein each pixel comprises;

an active layer formed on the substrate;

a gate insulating layer formed on the active layer;

a gate electrode formed on the gate insulating layer in a location corresponding to the active layer;

an interlayer dielectric layer formed on the gate electrode;

a source or drain electrode formed on the interlayer dielectric layer and coupled to the active layer;

an insulating layer formed on the source or drain electrode;

an organic light emitting diode formed on the insulating layer and coupled to the source or drain electrode; and

a capacitor, configured to store a charge for determining current for the organic light emitting diode, wherein the capacitor of at least one pixel has a distinctive shape corresponding to the primary color of the at least one pixel,

wherein the distinctive shape comprises at least one line that is not parallel or perpendicular to another line.

2. The organic light emitting display as claimed in claim 1, wherein the active layer includes a semiconductor layer including a source or drain region and a channel region, and a lower electrode of the capacitor.

3. The organic light emitting display as claimed in claim 2, wherein the distinctive shape is formed in the lower electrode of the capacitor.

4. The organic light emitting display as claimed in claim 3, wherein the lower electrode of the capacitor is substantially rectangular, and the distinctive shape is formed at least partially along at least one edge of the rectangle.

5. The organic light emitting display as claimed in claim 3, wherein the lower electrode of the capacitor of each pixel is substantially rectangular, and the at least one pixel has the distinctive shape on an edge corresponding to the primary color of the at least one pixel.

6. The organic light emitting display as claimed in claim 3, wherein the distinctive shape comprises at least part of at least one of a triangular shape, a tetragonal shape, a pentagonal shape, and a semicircular shape.

7. The organic light emitting display as claimed in claim 6, wherein the at least one pixel has the distinctive shape corresponding to the primary color of the at least one pixel.

8. The organic light emitting display as claimed in claim 1, wherein the organic light emitting diode includes an anode, an organic thin film, and a cathode, and the distinctive shape is formed on the anode.

9. The organic light emitting display as claimed in claim 8, wherein the anode is formed so that anode is substantially rectangular, and the distinctive shape is formed at a location corresponding to the primary color of the at least one pixel.

10. The organic light emitting display as claimed in claim 8, wherein the anode of each pixel is substantially rectangular, and the at least one pixel has the distinctive shape on an edge corresponding to the primary color of the at least one pixel.

11. The organic light emitting display as claimed in claim 8, wherein the distinctive shape comprises at least part of at least one of a triangular shape, a tetragonal shape, a pentagonal shape, and a semicircular shape.

12. The organic light emitting display as claimed in claim 11, wherein the at least one pixel has the distinctive shape corresponding to the primary color of the at least one pixel.

13. The organic light emitting display as claimed in claim 1, wherein the distinctive shape is on a plane that is substantially parallel to the plane of the display.

14. An organic light emitting display, comprising:

a substrate; and

a plurality of pixels of at least first and second primary colors formed on the substrate, wherein each pixel comprises;

an active layer formed on the substrate;

a gate insulating layer formed on the active layer;

a gate electrode formed on the gate insulating layer in a location corresponding to the active layer;

an interlayer dielectric layer formed on the gate electrode;

a source or drain electrode formed on the interlayer dielectric layer and coupled to the active layer;

an insulating layer formed on the source or drain electrode;

an organic light emitting diode formed on the insulating layer and coupled to the source or drain electrode; and

a capacitor, configured to store a charge for determining current for the organic light emitting diode, wherein the capacitor of at least one pixel has a distinctive shape corresponding to the primary color of the at least one pixel,

wherein the distinctive shape comprises at least one corner that does is not a 90 or a 270 degree angle.

15. The organic light emitting display as claimed in claim 14, wherein the distinctive shape is on a plane that is substantially parallel to the plane of the display.