Organic light emitting diode display

• US 8,599,149 B2
• Filed: 10/27/2009
• Issued: 12/03/2013
• Est. Priority Date: 06/08/2009
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Lee, Jaedo, Choi, Howon, Seo, Sangwoo
• Primary Examiner(s): Beck, Alexander S
• Assistant Examiner(s): RAYAN, MIHIR K
• Application Number:
  US12/588,771
• Publication Number:
  US 20100309150A1
• Time in Patent Office: 1,498 Days
• Field of Search: 345/173
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/127 comprising two substrates, e.g. display comprising OLED array and TFT driving circuitry on different substrates
• CPC Class Codes: H10K 59/17 Passive-matrix OLED displays
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens

Abstract

An organic light emitting diode (OLED) display is disclosed. The OLED display includes a plurality of subpixels on one surface of a first substrate, a second substrate attached to the first substrate, a shield electrode on one surface of the second substrate that is not opposite to the subpixels, the shield electrode being connected to a low potential voltage source, a touch screen panel on the shield electrode, a first printed circuit board (PCB) attached to the one surface of the first substrate, the first PCB receiving a driving signal driving the subpixels from a driving device, and a second PCB attached to the one surface of the second substrate, the second PCB transmitting a sensing signal generated by the touch screen panel to an external device.

Claims

1. An organic light emitting diode (OLED) display comprising:

a plurality of subpixels on one surface of a first substrate;

a second substrate attached to the first substrate;

a shield electrode directly on one surface of the second substrate that does not face the subpixels, the shield electrode being connected to a low potential voltage source;

a touch screen panel directly on the shield electrode;

a first printed circuit board (PCB) attached to the one surface of the first substrate, the first PCB receiving a driving signal driving the subpixels from a driving device;

a second PCB attached to the one surface of the second substrate, the second PCB transmitting a sensing signal generated by the touch screen panel to an external device;

a polarizing plate on the touch screen panel; and

a cover window on the polarizing plate,

wherein the polarizing plate and the cover window are attached to each other using an adhesive surrounding an air layer, so that the air layer is formed between the polarizing plate and the cover window and the cover window is the most outside layer.

2. The OLED display of claim 1, wherein the first substrate includes a first pad area extending in an attaching direction of the first PCB at one side of the first substrate, and the second substrate includes a second pad area extending in an attaching direction of the second PCB at one side of the second substrate.

3. The OLED display of claim 1, wherein the touch screen panel has a single-layered structure including one transparent electrode or a multi-layered structure including two transparent electrodes.

4. An organic light emitting diode (OLED) display comprising:

a plurality of subpixels on one surface of a first substrate;

a second substrate attached to the first substrate;

a shield electrode directly on other surface of the first substrate on which the subpixels are not formed, the shield electrode being connected to a low potential voltage source;

a touch screen panel directly on the shield electrode;

a first printed circuit board (PCB) attached to the one surface of the first substrate, the first PCB receiving a driving signal driving the subpixels from a driving device; and

a second PCB attached to the other surface of the first substrate, the second PCB transmitting a sensing signal generated by the touch screen panel to an external device;

a polarizing plate on the touch screen panel; and

a cover window on the polarizing plate,

wherein the polarizing plate and the cover window are attached to each other using an adhesive surrounding an air layer, so that the air layer is formed between the polarizing plate and the cover window and the cover window is the most outside layer.

5. The OLED display of claim 4, wherein the first substrate includes a first pad area extending in an attaching direction of the first and second PCBs.

6. The OLED display of claim 5, wherein a length of the first substrate is longer than a length of the second substrate by a length of the first pad area.

7. The OLED display of claim 4, wherein the touch screen panel has a single-layered structure including one transparent electrode or a multi-layered structure including two transparent electrodes.

8. An organic light emitting diode (OLED) display comprising:

a plurality of subpixels on one surface of a first substrate;

a second substrate attached to the first substrate;

a shield electrode directly on other surface of the first substrate that does not face the subpixels, the shield electrode being connected to a low potential voltage source;

a touch screen panel directly on the shield electrode;

a first printed circuit board (PCB) attached to the one surface of the first substrate, the first PCB receiving a driving signal driving the subpixels from a driving device;

a second PCB attached to the other surface of the first substrate, the second PCB transmitting a sensing signal generated by the touch screen panel to an external device;

a polarizing plate on the touch screen panel; and

a cover window on the polarizing plate,

wherein the polarizing plate and the cover window are attached to each other using an adhesive surrounding an air layer, so that the air layer is formed between the polarizing plate and the cover window and the cover window is the most outside layer.

9. The OLED display of claim 8, wherein the first substrate includes a first pad area extending in an attaching direction of the first PCB at one side of the first substrate and a second pad area extending in an attaching direction of the second PCB at other side of the first substrate.

10. The OLED display of claim 9, wherein a length of the first substrate is longer than a length of the second substrate by a sum of lengths of the first and second pad areas.

11. The OLED display of claim 8, wherein the touch screen panel has a single-layered structure including one transparent electrode or a multi-layered structure including two transparent electrodes.