Cell cutting device for display devices and method of manufacturing the display device

Patent metadata

Field	Value
Publication number	US-9931757-B2
Application number	US-201213688382-A
Country	US
Kind code	B2
Filing date	Nov 29, 2012
Priority date	Jul 23, 2012
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

A cell cutting device that cuts a mother substrate for display devices includes a fixing unit configured to move in a state where the mother substrate for display devices is fixed on the fixing unit, a cutter configured to perform a cutting process on the mother substrate for display devices and the cutter faces a surface of the mother substrate during the cutting process, a cutter driving unit driving the cutter in a state where the cutter is fixed thereon, and a buffer member arranged on another surface of the mother substrate to correspond to the cutter. The other surface is opposite the surface facing the cutter.

First claim

What is claimed is:

1. A method of manufacturing a display device by using a cell cutting device that includes a fixing unit, a cutter, a cutter driving unit, a buffer member, and a support member, the method comprising:
positioning a first surface of a mother substrate adjacent to the cutter, the mother substrate including a plurality of cells for forming display devices;
moving the fixing unit toward the cutter in a first direction parallel with the first surface of mother substrate in a state where the mother substrate is fixed to the fixing unit;
disposing the buffer member on a second surface of the mother substrate that is opposite to the first surface, the buffer member being disposed directly opposite the cutter, the buffer member being interposed between the second surface and the support member, a portion of the support member that faces the buffer member having a width in the first direction that is smaller than a width of the mother substrate in the first direction; and
cutting and separating the cells of the mother substrate by repeatedly moving the cutter in a thickness direction of the mother substrate by driving the cutter driving unit, the buffer member directly underlying the cutter when the cutter repeatedly moves in the thickness direction of the mother substrate, wherein:
the cutter includes a blade having a length that is equal to or greater than a width of the mother substrate in a second direction orthogonal to the first direction, the blade contacting the entire width of the mother substrate at one time at a start of the cutting and cutting the entire width of the mother substrate through one cutting process, and
the buffer member has a width that is equal to or greater than the length of the cutter, and
the buffer member has a width in the first direction that is greater than that of the support member.

2. The method of claim 1 , further comprising:
providing a display panel on the mother substrate;
disposing a first protective film on a first surface of the display panel; and
disposing a second protective film on a second surface of the display panel, the second surface being opposite the first surface.

3. The method of claim 2 , further comprising performing a cutting process for forming cutting recesses in the first protective film without affecting the display panel by controlling movement of the cutter.

4. The method of claim 3 , wherein each of the cells on the mother substrate is formed to include a pad unit, and the method further includes removing the protective film disposed on the pad unit by using the cutting recesses.

5. The method of claim 2 , wherein the display panel includes:
a display panel substrate;
a first electrode disposed on the display panel substrate;
an intermediate layer disposed on the first electrode; and
a second electrode disposed on the intermediate layer.

6. The method of claim 5 , wherein the display panel substrate is formed to include a flexible material.

7. The method of claim 1 , wherein the buffer member is a flexible mat.

8. The method of claim 1 , wherein the buffer member is movable relative to the support member by a roll-to-roll operation using a supply roll and a recovery roll.

Assignees

• Heo Kyung Hoe
• Lee Seung Jun
• Samsung Display Co Ltd

Inventors

• Heo Kyung-Hoe
• Lee Seung-Jun

Classifications

• Y10T83/222

  With receptacle or support for cut product · CPC title

• B26F1/3813

  wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work · CPC title

• B26D3/085

  On sheet material · CPC title

• Y10T83/654

  With work-constraining means on work conveyor [i.e., "work-carrier"] · CPC title

• Y10T83/6563

  With means to orient or position work carrier relative to tool station · CPC title