MASK ASSEMBLY FOR THIN FILM DEPOSITION AND ORGANIC LIGHT-EMITTING DISPLAY APPARATUS FABRICATED USING THE SAME

• US 20160369389A1
• Filed: 12/29/2015
• Published: 12/22/2016
• Est. Priority Date: 06/22/2015
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: KO, Junhyeuk, LEE, Sangshin, KANG, Mingoo
• Application Number:
  US14/982,908
• Publication Number:
  US 20160369389A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C23C 14/042 using masks
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 71/166 using selective deposition, e.g. using a mask

Abstract

A mask assembly for thin film deposition including a mask frame defining and surrounding an opening, and a mask coupled to the mask frame and having a plurality of deposition pattern units formed in a longitudinal direction of the mask and spaced apart from each other. The respective deposition pattern units include a deposition area, and each deposition area is divided into a plurality of pattern portions.

Claims

1. A mask assembly for thin film deposition, the mask assembly comprising:

a mask frame defining and surrounding an opening; and

a mask coupled to the mask frame and comprising a plurality of deposition pattern units formed in a longitudinal direction of the mask and spaced apart from each other,

wherein the respective deposition pattern units comprise a deposition area, and each deposition area is divided into a plurality of pattern portions.

2. The mask assembly of claim 1, wherein the respective pattern portions are continuously arranged in a width direction of the mask.

3. The mask assembly of claim 2, wherein the respective pattern portions have a same size.

4. The mask assembly of claim 2, wherein each pattern portion comprises slits having a same shape.

5. The mask assembly of claim 4, wherein each pattern portion comprises:

a first slit that extends in a longitudinal direction of the pattern portion corresponding to the longitudinal direction of the mask; and

a plurality of second slits and a plurality of third slits respectively disposed on both sides of the first slit.

6. The mask assembly of claim 5, wherein the first slit extends along the longitudinal direction of the pattern portion and comprises at least one stripe-shaped slit.

7. The mask assembly of claim 5, wherein the second slits and the third slits comprise a same pattern.

8. The mask assembly of claim 5, wherein the second slits and the third slits comprise a plurality of dot-shaped slits.

9. The mask assembly of claim 5, wherein the second slits and the third slits are symmetrically arranged to each other.

10. The mask assembly of claim 1, wherein:

the deposition pattern units disposed at both end portions of the mask in the longitudinal direction of the mask each comprise a single deposition area; and

the deposition pattern unit disposed between the both end portions of the mask comprises a plurality of deposition areas.

11. The mask assembly of claim 10, wherein the deposition pattern units disposed at the both end portions comprise a first deposition pattern unit comprising a first single deposition area at one end of the longitudinal direction of the mask and a second deposition pattern unit comprising a second single deposition area at the other end of the longitudinal direction of the mask.

12. The mask assembly of claim 11, wherein each of the first single deposition area and the second single deposition area comprises a single cell area corresponding to a unit display apparatus.

13. The mask assembly of claim 10, wherein the plurality of deposition areas comprise the single deposition areas continuously arranged therein.

14. The mask assembly of claim 13, wherein the plurality of deposition areas comprise a plurality of cell areas corresponding to a plurality of unit display apparatuses, respectively.

15. The mask assembly of claim 10, wherein a size of the deposition pattern portions disposed at the both end portions is greater than a size of the deposition pattern portion disposed between the both end portions.

16. The mask assembly of claim 1, wherein the mask comprises a plurality of divisional masks.

17. An organic light-emitting display apparatus fabricated using a mask assembly for thin film deposition, the organic light-emitting display apparatus comprising:

a display substrate;

a thin film transistor disposed on the display substrate;

an organic light-emitting device comprising;

a first electrode electrically connected to the thin film transistor and disposed on each sub-pixel of the display substrate; and

an intermediate layer comprising a light emissive layer disposed on the first electrode, and a second electrode disposed on the intermediate layer; and

an encapsulation substrate covering the organic light-emitting device,

wherein;

a pattern of the sub-pixel comprises at least one first deposition pattern that extends in one direction of the display substrate and a plurality of second deposition patterns disposed on both sides of the first deposition pattern with respect to the first deposition pattern; and

the first deposition pattern and the second deposition patterns are repeatedly arranged in the other direction of the display substrate.

18. The organic light-emitting display apparatus of claim 17, wherein the first deposition pattern is formed by using a stripe-shaped pattern of the mask assembly extended along the one direction of the display substrate.

19. The organic light-emitting display apparatus of claim 17, wherein the plurality of second deposition patterns are formed by using same dot-shaped patterns of the mask assembly.

20. The organic light-emitting display apparatus of claim 19, wherein the plurality of second deposition patterns are formed by using symmetrically-arranged patterns of the mask assembly.