Substrate processing apparatus and display device using the same

Patent metadata

Field	Value
Publication number	US-10825837-B2
Application number	US-201715674288-A
Country	US
Kind code	B2
Filing date	Aug 10, 2017
Priority date	Sep 30, 2016
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

Various embodiments provide a substrate processing apparatus for grinding a substrate, and a display device including a substrate in which a hole is formed in an edge of the substrate using the substrate processing apparatus. The substrate processing apparatus for processing a display substrate includes a body which, in operation, rotates, a cylindrical grinding part connected to the body, and a lateral groove formed in a surface of the cylindrical grinding part. The lateral groove is configured to accommodate the display substrate. Thus, it is possible to form a hole by grinding an edge of the display substrate so as to be matched with a designed value.

First claim

The invention claimed is:

1. An apparatus for processing a display substrate, comprising:
a body which, in operation, rotates;
a cylindrical grinding part connected to the body, the cylindrical grinding part configured to rotate along a rotation axis; and
a lateral groove located in a surface of the cylindrical grinding part, the lateral groove accommodating the display substrate for processing thereof,
wherein the lateral groove includes four surfaces in a cutting groove positioned around the rotation axis of the cylindrical grinding part, and
wherein a first surface and a second surface of the four surfaces are substantially parallel to each other in a direction substantially perpendicular to the rotation axis and a third surface and a fourth surface of the four surfaces meet each other to form an angle therebetween.

2. The apparatus according to claim 1 wherein a height of the lateral groove is greater than a thickness of the substrate.

3. The apparatus according to claim 1 , further comprising:
a plurality of lateral grooves formed in the surface of the cylindrical grinding part such that display substrates to be processed can be accommodated in another lateral groove in case a particular lateral groove becomes unsuitable for processing.

4. The apparatus according to claim 1 wherein the surface of the cylindrical grinding part is plated with diamond or diamond-like material.

5. The apparatus according to claim 1 wherein the angle is within a range from 40° to 90°.

6. The apparatus according to claim 1 wherein the third surface and the fourth surface of the four surfaces meet each other at a curved surface having an angle.

7. The apparatus according to claim 6 wherein the angle is within a range from 40° to 90°.

8. The apparatus according to claim 1 , wherein the display substrate includes a first substrate and a second substrate, and the first substrate includes a driving element that drives a pixel and the second substrate is disposed on the first substrate.

9. The apparatus according to claim 8 , wherein the cylindrical grinding part is kept at a constant distance from the second substrate without interference with each other when the cylindrical grinding part forms a hole in the first substrate.

Assignees

• Lg Display Co Ltd

Inventors

• Kuon Ik Hyun
• Park Jeong Kweon
• Hong Ju Ik
• Kim Jangcheol
• Kwak Jinwook

Classifications

• H10P72/0428

  Apparatus for mechanical treatment or grinding or cutting · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/411 Primary

  characterised by materials, geometry or structure of the substrates · CPC title

• H10D86/0212

  comprising manufacture, treatment or coating of substrates · CPC title

• G02F1/1303

  Apparatus specially adapted to the manufacture of LCDs · CPC title