Organic light-emitting diode display with minimized subpixel crosstalk

Patent metadata

Field	Value
Publication number	US-9847051-B2
Application number	US-201514875992-A
Country	US
Kind code	B2
Filing date	Oct 6, 2015
Priority date	Nov 4, 2014
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

An organic light-emitting diode display may have an array of pixels. Each pixel may have multiple subpixels of different colors. To avoid undesired color shifts when operating the display, the display may be configured so that subpixels of different colors are not coupled to each other through parasitic capacitances. The subpixels may include red, green, and blue subpixels or subpixels of other colors. Each subpixel may include an organic light-emitting diode having an anode and a cathode. The anode of each organic light-emitting diode may be coupled to a respective storage capacitor. Capacitive coupling between subpixels can be minimized by configuring the subpixel structures of each pixel so that the storage capacitors of the subpixels do not overlap the anodes of other subpixels in the pixel. Anode and capacitor overlap with subpixel data lines may also be reduced or eliminated.

First claim

What is claimed is:

1. A display, comprising:
an array of pixels, wherein at least one pixel includes a first subpixel of a first color, a second subpixel of a second color, and a third subpixel of a third color and wherein the first subpixel has a first anode for a first light-emitting diode and has a first storage capacitor, the second subpixel has a second anode for a second light-emitting diode and has a second storage capacitor, and the third subpixel has a third anode for a third light-emitting diode and has a third storage capacitor, wherein the first, second, and third storage capacitors are respectively directly connected to, and respectively at least partially overlap the first, second, and third anodes;
control lines that supply control signals to rows of the pixels in the array; and
data lines associated with columns of the pixels in the array, wherein the data lines include a first data line that provides data to the first subpixel, a second data line that provides data to the second subpixel, and a third data line that provides data to the third subpixel, wherein the first storage capacitor does not overlap the second anode and does not overlap the third anode, wherein the second storage capacitor does not overlap the first anode and does not overlap the third anode, wherein a portion of the second storage capacitor does not overlap the second anode, wherein the third storage capacitor does not overlap the first anode and does not overlap the second anode, wherein the first data line is interposed between the first anode and the second anode, wherein the second data line overlaps the second and third anodes, and wherein the third data line is spaced apart from the second and third anodes.

2. The display defined in claim 1 wherein the array of pixels comprises organic light-emitting diode pixels.

3. The display defined in claim 2 wherein the first storage capacitor at least partly overlaps the first anode.

4. The display defined in claim 3 wherein the first subpixel is a blue subpixel.

5. The display defined in claim 4 wherein the second subpixel is a red subpixel and wherein the third subpixel is a green subpixel.

6. The display defined in claim 4 wherein the second subpixel is a green subpixel and the third subpixel is a red subpixel.

7. The display defined in claim 3 wherein the second storage capacitor at least partly overlaps the second anode.

8. The display defined in claim 7 wherein the third storage capacitor at least partly overlaps the third anode.

9. The display defined in claim 8 wherein the second data line does not overlap the second storage capacitor.

10. The display defined in claim 9 wherein the third storage capacitor does not overlap the third data line.

11. The display defined in claim 10 wherein the third storage capacitor does not overlap the second data line.

12. The display defined in claim 10 wherein the third storage capacitor at least partly overlaps the second data line.

13. The display defined in claim 12 wherein the first subpixel is a blue subpixel.

14. The display defined in claim 13 wherein the second subpixel is a red subpixel and wherein the third subpixel is a green subpixel.

15. The display defined in claim 13 wherein the second subpixel is a green subpixel and wherein the third subpixel is a red subpixel.

Assignees

• Apple Inc

Inventors

• Choi Jae Won
• Aflatooni Koorosh
• Chang Shih Chang
• Park Young Bae

Classifications

• G09G2300/0861

  with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes · CPC title

• G09G2320/0209

  Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display · CPC title

• H01L27/3216

  Electricity · mapped topic

• G09G3/3233

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G3/2003 Primary

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title