ORGANIC LIGHT-EMITTING DIODE (OLED) DISPLAY

• US 20160132148A1
• Filed: 03/26/2015
• Published: 05/12/2016
• Est. Priority Date: 11/06/2014
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Han, Kwan Young, Kim, Sang Kook
• Application Number:
  US14/670,272
• Publication Number:
  US 20160132148A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• 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 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 50/8423 Metallic sealing arrangements
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 50/86 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: H10K 59/87 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 59/8721 Metallic sealing arrangements
• CPC Class Codes: H10K 59/8722 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/8791 Arrangements for improving contrast, e.g. preventing reflection of ambient light

Abstract

An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a display substrate including a display area configured to display an image and a peripheral area surrounding the display area. The OLED display also includes a thin film display layer formed over the display substrate in the display area and a shielding electrode formed over the entire surface of the thin film display layer. The OLED display further includes an encapsulation substrate formed over the display substrate and a touch electrode layer interposed between the encapsulation substrate and the thin film display layer.

Claims

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

a display substrate including a display area configured to display an image and a peripheral area surrounding the display area;

a thin film display layer formed over the display substrate in the display area;

a shielding electrode formed over the entire surface of the thin film display layer;

an encapsulation substrate formed over the display substrate; and

a touch electrode layer interposed between the encapsulation substrate and the thin film display layer.

2. The OLED display of claim 1, further comprising an insulating layer interposed between the shielding electrode and the touch electrode layer.

3. The OLED display of claim 1, wherein the shielding electrode is transparent.

4. The OLED display of claim 3, wherein the shielding electrode is formed of one of the following materials:

indium tin oxide (ITO), indium zinc oxide (IZO), indium tin zinc oxide (ITZO), and antimony tin oxide (ATO).

5. The OLED display of claim 1, further comprising:

a touch driving integrated circuit (IC) formed at one side of the peripheral area of the display substrate and configured to transmit a first signal to the touch electrode layer; and

a display driving IC configured to transmit a second signal to the thin film display layer.

6. The OLED display of claim 5, wherein the touch driving IC and the display driving IC are electrically connected to the shielding electrode.

7. The OLED display of claim 6, further comprising:

a flexible printed circuit board (FPCB) arranged at the one side of the peripheral area of the display substrate and electrically connected to the touch driving IC and the display driving IC; and

a controller electrically connected to the FPCB and configured to;

i) generate the first and second signals, ii) respectively transmit the first and second signals to the touch driving IC and the display driving IC, and iii) generate a voltage signal having a predetermined level.

8. The OLED display of claim 7, wherein the controller is further configured to apply the voltage signal to the shielding electrode.

9. The OLED display of claim 8, wherein the voltage signal comprises a general voltage or a ground voltage.

10. The OLED display of claim 1, further comprising a guide ring formed over the display substrate in the peripheral area and configured to prevent static electricity from flowing into the display area.

11. The OLED display of claim 10, wherein the guide ring and the shielding electrode are formed of the same material.

12. The OLED display of claim 1, further comprising:

a polarization layer formed over the encapsulation substrate; and

a window formed over the polarization layer.

13. The OLED display of claim 12, further comprising a resin layer interposed between the polarization layer and the window.