ORGANIC LIGHT EMITTING DIODE DISPLAY

Abstract

The present invention relates to an organic light emitting diode display having an optical film adhered to an outer surface of substrate and an external case covering a portion of the optical film so as to prevent display quality of the organic light emitting diode display from being degraded. The present invention makes it possible to safely protect an organic light emitting diode display since an impact is not directly delivered to the insulation substrate from the outside, but is delivered after being first absorbed by the optical film exposed to the outside.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become more apparent by further describing exemplary embodiments thereof with reference to the accompanying drawings, in which:

FIG. 1 is an equivalent circuit schematic diagram of an exemplary embodiment of an organic light emitting diode display according to the present invention;

FIG. 2 is a plan view layout of the exemplary embodiment of an organic light emitting diode display of FIG. 1 according to the present invention;

FIGS. 3 and 4 are cross-sectional views of the organic light emitting diode display shown in FIG. 2 taken along lines III-III and IV-IV, respectively;

FIGS. 5 and 6 are cross-sectional views of the organic light emitting diode display shown in FIG. 2 taken along lines III-III and IV-IV, respectively;

FIG. 7 is a plan view layout of an exemplary embodiment of an organic light emitting diode display illustrating the relationship among the sizes of a light emitting region, a case and an optical film according to the present invention;

FIG. 8 is a cross-sectional view of an exemplary bottom emission type organic light emitting diode display shown in FIG. 7 taken along line VI-VI according to an exemplary embodiment of the present invention; and

FIG. 9 is a cross-sectional view of an exemplary top emission type organic light emitting diode display shown in FIG. 7 taken along line VI-VI according to another embodiment of the present invention.

Claims

1. An organic light emitting diode display comprising: a first substrate;first signal lines formed on the first substrate;second signal lines formed on the first substrate;switching thin film transistors connected to the first and second signal lines;driving thin film transistors connected to the switching thin film transistors;organic light emitting diodes connected to the driving thin film transistors;a second substrate covering the organic light emitting diodes;an optical film adhered to an outer surface of the first substrate or the second substrate; andan external case covering a portion of the optical film.

2. The organic light emitting diode display of claim 1, wherein the optical film is a film having low reflectance.

3. The organic light emitting diode display of claim 1, wherein the optical film has two or more films formed in multiple layers.

4. The organic light emitting diode display of claim 1, wherein an adhesive is interposed between the optical film and the substrate adhered to the optical film.

5. The organic light emitting diode display of claim 1, wherein the optical film comprises a circular polarizer.

6. The organic light emitting diode display of claim 1, wherein light emitted in the organic light emitting diodes passes through the substrate adhered to the optical film.

7. The organic light emitting diode display of claim 1, wherein two or more organic light emitting diodes form a light emitting region where an image is displayed and the optical film is formed covering the light emitting region, and wherein the external case has an opening having an area larger than an area of the light emitting region and smaller than an area of the optical film.

8. An organic light emitting diode display comprising: a first substrate;first signal lines formed on the first substrate;second signal lines formed on the first substrate;switching thin film transistors connected to the first and second signal lines;driving thin film transistors connected to the switching thin film transistors;organic light emitting diodes connected to the driving thin film transistors;a second substrate covering the organic light emitting diodes;an optical film adhered to an upper surface of the second substrate; andan external case covering a portion of the optical film.

9. The organic light emitting diode display of claim 7, wherein the optical film is a film having low reflectance.

10. The organic light emitting diode display of claim 9, wherein the optical film has two or more films formed in multiple layers.

11. The organic light emitting diode display of claim 7, wherein the second substrate and the optical film are adhered by an adhesive.

12. The organic light emitting diode display of claim 7, wherein each of the organic light emitting diodes includes a first electrode including a transparent conductive material on the light emitting side surface, a second electrode including a reflective metal on a side surface opposite to the light emitting side surface, and a light emitting member formed between the first electrode and the second electrode.

13. The organic light emitting diode display of claim 8, wherein two or more organic light emitting diodes form a light emitting region where an image is displayed and the optical film is formed covering the light emitting region.

14. The organic light emitting diode display of claim 13, wherein the external case has an opening having an area larger than an area of the light emitting region and smaller than an area of the optical film.

15. An organic light emitting diode display comprising: a first substrate;first signal lines formed on the first substrate;second signal lines formed on the first substrate;switching thin film transistors connected to the first and second signal lines;driving thin film transistors connected to the switching thin film transistors;first electrodes connected to the driving thin film transistors;second electrodes facing the first electrodes;light emitting members respectively formed between the first electrodes and the second electrodes;a light emitting region in which the plurality of first electrodes, second electrodes, and light emitting members are formed so as to display images;an optical film adhered to the bottom of the first substrate; andan external case having an opening,wherein the external case covers a portion of the optical film.

16. The organic light emitting diode display of claim 15, wherein the opening is formed so as to expose the optical film.

17. The organic light emitting diode display of claim 15, wherein the opening is larger than an area of the light emitting region and smaller than an area of the optical film.

18. The organic light emitting diode display of claim 15, wherein the optical film is a film having low reflectance.

19. The organic light emitting diode display of claim 18, wherein the optical film has two or more films formed in multiple layers.

20. The organic light emitting diode display of claim 15, wherein the first substrate and the optical film are adhered by an adhesive.