OLED display having sub-pixel structure that supports 2D and 3D image display modes

Patent metadata

Field	Value
Publication number	US-10139643-B2
Application number	US-201414542014-A
Country	US
Kind code	B2
Filing date	Nov 14, 2014
Priority date	Nov 26, 2013
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

Discussed is an organic light emitting display device. The organic light emitting display device can include an organic light emitting panel in which a main organic light emitting diode (OLED) which emits light in a two-dimensional (2D) mode and a three-dimensional (3D) mode and an auxiliary OLED which emits light in only the 2D mode are disposed in each of a plurality of sub-pixels, a panel driver configured to drive the organic light emitting panel, and a patterned retarder bonded to the organic light emitting panel, and configured to change polarizing characteristics of a left image and a right image which are output from the organic light emitting panel.

First claim

What is claimed is:

1. An organic light emitting display device comprising:
an organic light emitting panel including a plurality of sub-pixels in which each of the plurality of sub-pixels includes a main organic light emitting diode (OLED) which emits light in a two-dimensional (2D) mode and a three-dimensional (3D) mode and an auxiliary OLED which emits light in only the 2D mode, wherein the auxiliary OLED and the main OLED both emit a same color of light;
a panel driver configured to drive the organic light emitting panel;
a driver provided in an intersection area between a gate line and a data line, and configured to include a plurality of transistors in each of the plurality of sub-pixels; and
a patterned retarder bonded to the organic light emitting panel, and configured to change polarizing characteristics of a left image and a right image which are output from the organic light emitting panel,
wherein the driver overlaps the main OLED and the auxiliary OLED and includes a driving transistor for driving the main OLED and the auxiliary OLED, and
wherein the main OLED and the auxiliary OLED are formed in a top emission type where the light is output to an outside through a cathode,
wherein the main OLED comprises a main anode, a light emitting material part formed on the main anode, and the cathode formed on the light emitting material part,
wherein the auxiliary OLED comprises an auxiliary anode electrically isolated from the main anode by a switch, and the auxiliary anode shares both the light emitting material part and the cathode with the main OLED,
wherein the plurality of sub-pixels are separated from each other by a bank and the main anode and the auxiliary anode within each of the plurality of sub-pixels are separated from each other by a portion of the light emitting material part disposed therebetween that does not overlap with the bank, and
wherein one end of the switch is connected between the main anode and the driving transistor, and another end of the switch is connected to the auxiliary anode of the auxiliary OLED, and the switch electrically connects or disconnects the main anode and the auxiliary anode according to a control signal transferred from the panel driver and activated during the 2D mode.

2. The organic light emitting display device of claim 1 , wherein each of the plurality of sub-pixels comprises:
the main OLED configured to emit light with a driving current supplied from the driver;
the auxiliary OLED configured to emit light with the driving current; and
the switch configured to prevent the driving current from being supplied to the auxiliary OLED in the 3D mode, and supply the driving current to the auxiliary OLED in the 2D mode, according to the control signal transferred from the panel driver.

3. The organic light emitting display device of claim 1 , wherein,
in the 2D mode, the main OLED and the auxiliary OLED simultaneously emit light with a driving current transferred from one driver which is provided in each sub-pixel, and
in the 3D mode, the main OLED emits light with the driving current, and the driving current is not supplied to the auxiliary OLED.

4. The organic light emitting display device of claim 3 , wherein the main anode configuring the main OLED is directly connected to the one driver, and the auxiliary anode configuring the auxiliary OLED is connected to the one driver and the main anode through the switch.

5. The organic light emitting display device of claim 4 , wherein the switch prevents the driving current from being supplied to the auxiliary OLED in the 3D mode, and supplies the driving current to the auxiliary OLED in the 2D mode, according to the control signal transferred from the panel driver.

6. A display device comprising:
a plurality of sub-pixels in which each of the plurality of sub-pixels includes a main organic light emitting diode (OLED) configured to emit light in a two-dimensional (2D) mode and a three-dimensional (3D) made, and an auxiliary organic light emitting diode (OLED) configured to emit light in only the 2D mode, wherein the auxiliary OLED and the main OLED both emit a same color of light;
a driver provided in an intersection area between a gate line and a data line, and configured to include a plurality of transistors; and
a patterned retarder configured to change polarizing characteristics of a left image and a right image,
wherein the driver overlaps the main OLED and the auxiliary OLED and includes a driving transistor for driving the main OLED and the auxiliary OLED, and
wherein the main OLED and the auxiliary OLED are formed in a top emission type where the light is output to an outside through a cathode,
wherein the main OLED comprises a main anode, a light emitting material part formed on the main anode, and the cathode formed on the light emitting material part,
wherein the auxiliary OLED comprises an auxiliary anode electrically isolated from the main anode by a switch, and the auxiliary anode shares both the light emitting material part and the cathode with the main OLED,
wherein the plurality of sub-pixels are separated from each other by a bank and the main anode and the auxiliary anode within each of the plurality of sub-pixels are separated from each other by a portion of the light emitting material part disposed therebetween that does not overlap with the bank, and
wherein one end of the switch is connected between the main anode and the driving transistor, and another end of the switch is connected to the auxiliary anode of the auxiliary OLED, and the switch electrically connects or disconnects the main anode and the auxiliary anode according to a control signal transferred from a panel driver.

7. The device of claim 6 , wherein the switch prevents a driving current from being supplied to the auxiliary OLED in the 3D mode, and supplies the driving current to the auxiliary OLED in the 2D mode.

8. The device of claim 7 , wherein the main anode is directly connected to the driver, and the auxiliary OLED is connected to the driver and the main anode through the switch.

9. An apparatus comprising:
a substrate; and
a plurality of self-luminescent pixels in an array or matrix formed on the substrate, each pixel having a plurality of sub-pixels, each sub-pixel having a combined configuration of a main organic light emitting diode (OLED) with an auxiliary organic light emitting diode (OLED), wherein the auxiliary OLED and the main OLED both emit a same color of light,
wherein the combined configuration of the main OLED and the auxiliary OLED provide a first aperture ratio for a two-dimensional (2D) mode of image displaying operation and a second aperture ratio for a three-dimensional (3D) mode of image displaying operation, with the first and second aperture ratios being different from each other,
wherein the main OLED and the auxiliary OLED are formed in a top emission type where the light is output to an outside through a cathode,
wherein the main OLED comprises a main anode, a light emitting material part formed on the main anode, and the cathode formed on the light emitting material part,
wherein the auxiliary OLED comprises an auxiliary anode electrically isolated from the main anode by a switch, and the auxiliary anode shares both the light emitting material part and the cathode with the main OLED,
wherein the plurality of sub-pixels are separated from each other by a bank and the main anode and the auxiliary anode within each of the plurality of sub-pixels are separated from each other by a portion of the light emitting material part disposed therebetween that does not overlap with the bank, and
wherein one end of the switch is connected between the main anode and the driving transistor, and another end of t

Assignees

• Lg Display Co Ltd

Inventors

• Ryu Ho Jin

Classifications

• H04N13/356

  having separate monoscopic and stereoscopic modes · CPC title

• G02B30/00

  Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images (in microscopes G02B21/22) · CPC title

• G09G3/207

  by domain size control (G09G3/3637 takes precedence) · CPC title

• G09G3/3233

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

• H04N13/337

  using polarisation multiplexing · CPC title