CN-114645244-B - Mask frame

Abstract

The mask frame includes a first horizontal portion, a second horizontal portion disposed below the first horizontal portion, at least one vertical portion connecting the first horizontal portion and the second horizontal portion, and a stretching rod coupled to the first horizontal portion and configured to apply a shrinking force to the first horizontal portion in a longitudinal direction of the stretching rod.

Inventors

• LI ZHONGYUN
• LI CHENGZHEN

Assignees

• 三星显示有限公司

Dates

Publication Date

20260505

Application Date

20211221

Priority Date

20201221

Claims (10)

1. 1. A mask frame, comprising: A first horizontal portion; a second horizontal portion disposed below the first horizontal portion; At least one vertical portion connecting the first horizontal portion and the second horizontal portion, and A stretch rod coupled to the first horizontal portion, and Wherein the stretching rod is configured to apply a contraction force to the first horizontal portion in a longitudinal direction of the stretching rod, and The stretch rod is coupled to a lower surface of the first horizontal portion.
2. 2. The mask frame of claim 1, wherein a first end region of the stretching rod and a second end region of the stretching rod opposite the first end region are rigidly attached to the first horizontal portion.
3. 3. The mask frame according to claim 1, wherein the stretching rod includes a first region and a second region, the second region exerting a contraction force having a different intensity than a contraction force exerted from the first region.
4. 4. The mask frame of claim 1, wherein the tension bar comprises metal.
5. 5. The mask frame according to claim 1, wherein the stretching rod has a thickness in a range of 50 μm to 2 mm.
6. 6. The mask frame of claim 1, wherein the stretching rod comprises a first stretching rod and a second stretching rod.
7. 7. The mask frame according to claim 6, wherein the first stretching rod and the second stretching rod are arranged in a longitudinal direction of the first horizontal portion.
8. 8. The mask frame of claim 6, wherein the first stretching rod and the second stretching rod are coupled to an upper surface of the first horizontal portion.
9. 9. A mask frame, comprising: A first horizontal portion; a second horizontal portion disposed below the first horizontal portion; a first vertical portion connecting the first horizontal portion and the second horizontal portion; A stage disposed below the second horizontal portion, and A stretching rod coupled to the first vertical portion and the table and configured to apply a contractive force to the first vertical portion.
10. 10. The mask frame of claim 9, wherein a first end region of the stretching rod is rigidly attached to the first vertical portion and a second end region of the stretching rod opposite the first end region is rigidly attached to the table.

Description

Mask frame Technical Field Embodiments of the present invention generally relate to a mask frame and a method of manufacturing a mask frame. Background The display device may include a plurality of pixels. Each of the plurality of pixels may include a light emitting layer disposed between the opposite electrodes. The light emitting layer may be formed by various methods, one of which may be a deposition method using a mask. If the shape of the mask is deformed due to deformation of the mask frame supporting the mask in a process of forming the light emitting layer using the mask, deposition reliability of the light emitting layer may be lowered. The above information disclosed in this background section is only for the understanding of the background of the inventive concept and, therefore, it may contain information that does not form the prior art. Disclosure of Invention Devices and methods constructed in accordance with exemplary implementations of the present invention can improve the formation of a light emitting layer on a display device using a mask frame with stretching rods. The invention aims to provide a mask frame capable of improving bending deformation of the frame. Another object of the present invention is to provide a method of manufacturing a mask frame that can improve bending deformation of the frame. Additional features of the inventive concepts will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the inventive concepts. The mask frame according to an embodiment may include a first horizontal portion, a second horizontal portion disposed below the first horizontal portion, at least one vertical portion connecting the first horizontal portion and the second horizontal portion, and a stretching rod coupled to the first horizontal portion and configured to apply a shrinkage force to the first horizontal portion in a longitudinal direction of the stretching rod. The stretching rod may be coupled to a lower surface of the first horizontal portion. The first end region of the stretch rod and the second end region of the stretch rod opposite the first end region may be welded to the first horizontal portion. The stretching rod may include a first region and a second region, the second region exerting a contraction force having a different intensity than that exerted from the first region. The stretching rod may comprise metal. The stretching rod may have a thickness in the range of about 50 μm to about 2 mm. The stretch rod may include a first stretch rod and a second stretch rod. The first stretching rod and the second stretching rod may be arranged in the longitudinal direction of the first horizontal section. The first and second stretching rods may be coupled to an upper surface of the first horizontal section. The mask frame according to an embodiment may include a first horizontal portion, a second horizontal portion disposed below the first horizontal portion, a first vertical portion connecting the first horizontal portion and the second horizontal portion, a stage disposed below the second horizontal portion, and a stretching rod coupled to the first vertical portion and the stage and configured to apply a shrinking force to the first vertical portion. The first end region of the stretching rod may be rigidly attached (such as welded) to the first vertical portion and the second end region of the stretching rod opposite the first end region is rigidly attached (such as welded) to the table. The stretching rod may comprise metal. The method of manufacturing a mask frame according to an embodiment may include preparing a frame unit including a first horizontal portion, a second horizontal portion spaced apart from the first horizontal portion, and at least one vertical portion connecting the first horizontal portion and the second horizontal portion, applying a stretching force to the stretching rod in a longitudinal direction of the stretching rod, and coupling the stretching rod to the first horizontal portion of the frame unit in a state in which the stretching force is applied to the stretching rod. The first end region of the stretch rod and a second end region of the stretch rod opposite the first end region may be welded to the first horizontal portion. The method may further include measuring an amount of bending deformation of the first horizontal portion before applying the stretching force to the stretching rod in the longitudinal direction of the stretching rod, and the strength of the stretching force may be determined according to the amount of bending deformation. Applying a stretching force to the stretching rod in the longitudinal direction of the stretching rod may include applying mutually different stretching forces to the first region and the second region of the stretching rod, respectively, to compensate for the amount of bending deformation. The stretching rod may comprise metal. T