Visual inspection apparatus for glass substrate of liquid crystal display and inspection method thereof

• US 8,854,616 B2
• Filed: 09/05/2011
• Issued: 10/07/2014
• Est. Priority Date: 08/03/2011
• Status: Active Grant

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Wu, Jo-Shan
• Primary Examiner(s): Chowdhury, Tarifur
• Assistant Examiner(s): Underwood, Jarreas C
• Application Number:
  US13/378,670
• Publication Number:
  US 20130033706A1
• Time in Patent Office: 1,128 Days
• Field of Search: None
• US Class Current: 356/239.1
• CPC Class Codes: G01N 2021/9513 Liquid crystal panels
• CPC Class Codes: G01N 21/95 characterised by the material or shape of the object to be examined G01N21/89 - G01N21/91, G01N21/94 take precedence
• CPC Class Codes: G01N 21/958 Inspecting transparent materials or objects, e.g. windscreens for conveyed flat sheet or rod G01N21/896

Abstract

Disclosed is a visual inspection apparatus for a glass substrate of a liquid crystal display, comprising an inspection platform and at least two slide rails. The glass substrate for inspection is fixedly located on an inspection platform main body. The slide rails are installed at two adjacent sides of the main body leastwise. Length directions of the slide rails are parallel with a level of the main body. The lengths of the two adjacent slide rails are mutually perpendicular; the visual inspection apparatus further comprises a coordinate reader. The coordinate reader is slidably jointed to the slide rails and employed to cross above the level of the main body to form a locating point. An inspector reads a coordinate of the locating point to acquire a corresponding coordinate of the glass substrate. The present invention also provides an inspection method for a glass substrate of a liquid crystal display.

Claims

1. A visual inspection apparatus for a glass substrate of a liquid crystal display, comprising an inspection platform, and the inspection platform comprises an inspection platform main body which the glass substrate for inspection is fixedly located thereon, characterized in that,

the visual inspection apparatus further comprises a first slide rail and a third slide rail, and the first slide rail and the third slide rail are installed at two adjacent sides of the inspection platform main body, and length directions of the slide rails are parallel with a level of the inspection platform main body, and the length directions of the first slide rail and the third slide rail are mutually perpendicular;

the visual inspection apparatus further comprises a coordinate reader, and the coordinate reader comprises a first movable ruler and a second movable ruler, and the first movable ruler and the second movable ruler are respectively slidably jointed to the first slide rail and the third slide rail, and the first movable ruler and the second movable ruler are employed to cross above the level of the inspection platform main body to form a locating point, and an inspector reads an coordinate of the locating point to acquire a corresponding coordinate of the glass substrate for inspection;

wherein a length direction of the first movable ruler is perpendicular to a length direction of the first slide rail;

a length direction of second movable ruler is perpendicular to a length direction of the third slide rail;

the coordinate reader further comprises a first ruler and a second ruler;

wherein a length direction of the first ruler is parallel with the length direction of the first slide rail;

a length direction of the second ruler is parallel with the length direction of the third slide rail.

2. The visual inspection apparatus for a glass substrate of a liquid crystal display according to claim 1, characterized in that the slide rails further comprises a second slide rail and fourth slide rail,

wherein a length direction of second slide rail is parallel with the length direction of the first slide rail, and the first slide rail and the second slide rail are positioned at two opposite sides of the inspection platform main body, and the first movable ruler is slidably jointed to the first slide rail and the second slide rail;

a length direction of fourth slide rail is parallel with the length direction of the third slide rail, and the third slide rail and the fourth slide rail are positioned at two opposite sides of the inspection platform main body, and the second movable ruler is slidably jointed to the third slide rail and the fourth slide rail.

3. The visual inspection apparatus for a glass substrate of a liquid crystal display according to claim 1, characterized in that the coordinate reader further comprises a first pointer and a second pointer;

wherein the first pointer is slidably jointed to the first slide rail, and the first ruler is positioned corresponding to the first pointer;

the second pointer is slidably jointed to the second slide rail, and the second ruler is positioned corresponding to the second pointer.

4. The visual inspection apparatus for a glass substrate of a liquid crystal display according to claim 1, characterized in that the first pointer and the second pointer are laser pens.

5. A visual inspection apparatus for a glass substrate of a liquid crystal display, comprising an inspection platform, and the inspection platform comprises an inspection platform main body which the glass substrate for inspection is fixedly located thereon, characterized in that,

the visual inspection apparatus further comprises at least two slide rails, and the slide rails are installed at two adjacent sides of the inspection platform main body leastwise, and length directions of the slide rails are parallel with a level of the inspection platform main body, and the lengths of the two adjacent slide rails are mutually perpendicular;

the visual inspection apparatus further comprises a coordinate reader, and the coordinate reader is slidably jointed to the slide rails, and the coordinate reader is employed to cross above the level of the inspection platform main body to form a locating point, and an inspector reads an coordinate of the locating point to acquire a corresponding coordinate of the glass substrate for inspection,

wherein the slide rails further comprises a fifth slide rail and sixth slide rail;

the coordinate reader further comprises a first pointer, a second pointer, a first ruler and a second ruler;

wherein the first pointer is slidably jointed to the fifth slide rail, and the first ruler is positioned corresponding to the first pointer, and a length direction of the first ruler is parallel with a length direction of the fifth slide rail;

the second pointer is slidably jointed to the sixth slide rail, and the second ruler is positioned corresponding to the second pointer, and a length direction of the second ruler is parallel with a length direction of the sixth slide rail.

6. The visual inspection apparatus for a glass substrate of a liquid crystal display according to claim 5, characterized in that the slide rails further comprises a first slide rail and a third slide rail;

the coordinate reader further comprises a first movable ruler and a second movable ruler,

the first movable ruler is slidably jointed to the first slide rail, and a length direction of the first movable ruler is perpendicular to a length direction of the first slide rail;

the second movable ruler is slidably jointed to the third slide rail, and a length direction of second movable ruler is perpendicular to a length direction of the third slide rail.

7. The visual inspection apparatus for a glass substrate of a liquid crystal display according to claim 6, characterized in that the slide rails further comprises a second slide rail and fourth slide rail,

wherein a length direction of second slide rail is parallel with the length direction of the first slide rail, and the first slide rail and the second slide rail are positioned at two opposite sides of the inspection platform main body, and the first movable ruler is slidably jointed to the first slide rail and the second slide rail;

a length direction of fourth slide rail is parallel with the length direction of the third slide rail, and the third slide rail and the fourth slide rail are positioned at two opposite sides of the inspection platform main body, and the second movable ruler is slidably jointed to the third slide rail and the fourth slide rail.

8. The visual inspection apparatus for a glass substrate of a liquid crystal display according to claim 5, characterized in that the first pointer and the second pointer are laser pens.

9. An inspection method for a glass substrate of a liquid crystal display, characterized in that, the method comprising steps of:

locating the glass substrate for inspection fixedly on an inspection platform main body;

acquiring a corresponding coordinate via a coordinate reader installed on slide rails;

comparing the acquired coordinate with an inspection standard of the glass substrate to determine whether the glass substrate coincides the inspection standard;

wherein the slide rails are installed at two adjacent sides of the inspection platform main body leastwise, and length directions of the slide rails are parallel with a level of the inspection platform main body, and the lengths of the two adjacent slide rails are mutually perpendicular;

the coordinate reader is slidably jointed to the slide rails,

wherein the step of acquiring the corresponding coordinate via the coordinate reader installed on the slide rails further comprises steps of;

controlling a first pointer sliding along a fifth slide rail;

controlling a second pointer sliding along a sixth slide rail;

acquiring the corresponding coordinate according to an optical line of the first pointer corresponding to the graduations of the first ruler and an optical line of the second pointer corresponding to the graduations of the second ruler;

wherein a length direction of the first ruler is parallel with a length direction of the fifth slide rail and corresponds to the first pointer;

a length direction of the second ruler is parallel with a length direction of the sixth slide rail and corresponds to the second pointer.

10. The inspection method for a glass substrate of a liquid crystal display according to claim 9, characterized in that the step of acquiring a corresponding coordinate via the coordinate reader installed on the slide rails further comprises steps of:

controlling a first movable ruler sliding along a first slide rail;

controlling a second movable ruler sliding along a third slide rail;

acquiring the corresponding coordinate according to the first movable ruler and the second movable ruler;

wherein a length direction of the first movable ruler is perpendicular to a length direction of the first slide rail;

a length direction of second movable ruler is perpendicular to a length direction of the third slide rail.

11. The inspection method for a glass substrate of a liquid crystal display according to claim 10, characterized in that the step of acquiring a corresponding coordinate via the coordinate reader installed on the slide rails further comprises steps of:

controlling the first movable ruler sliding along the first slide rail and a second slide rail;

controlling the second movable ruler sliding along the third slide rail and a fourth slide rail;

acquiring the corresponding coordinate according to the first movable ruler and the second movable ruler;

wherein a length direction of second slide rail is parallel with the length direction of the first slide rail, and the first slide rail and the second slide rail are positioned at two opposite sides of the inspection platform main body;

a length direction of fourth slide rail is parallel with the length direction of the third slide rail, and the third slide rail and the fourth slide rail are positioned at two opposite sides of the inspection platform main body.

12. The inspection method for a glass substrate of a liquid crystal display according to claim 9, characterized in that the first pointer and the second pointer are laser pens.