Method of manufacturing liquid crystal display apparatus and manufacturing device therefor

• US 20030043337A1
• Filed: 09/05/2002
• Published: 03/06/2003
• Est. Priority Date: 09/05/2001
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Takabayashi, Hironori
• Granted Patent: US 7,385,667 B2
• Time in Patent Office: Days
• US Class Current: 349/187
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133351 Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
• CPC Class Codes: G02F 1/133354 Arrangements for aligning or assembling substrates
• CPC Class Codes: G02F 1/1341 Filling or closing of cells
• CPC Class Codes: Y10T 156/1702 For plural parts or plural areas of single part

Abstract

The apparatus for manufacturing a liquid crystal display apparatus is equipped with the XYZθ-movement mechanism can move at least one of the first and second attraction stages in a vertical direction so as to adhere the first and second substrates to each other via the sealing agent, and then move the first and second attraction stages relatively to each other in a horizontal direction on the basis of an ordered movement amount, so as to align the first and second substrates with each other, and a control device that can move the first and second substrates relatively to each other by a predetermined amount more than the ordered movement amount while aligning the first and second substrates with each other by the XYZθ-movement mechanism, so as to set the first and second substrates at target positions.

Claims

1. A method of manufacturing a liquid crystal display apparatus, comprising:

adhering a first substrate and a second substrate with each other via a sealing agent made of a viscoelastic material; and

while aligning the first and second substrates adhered with each other by moving them relatively with each other on the basis of a relative displacement amount between the first and second substrates, first moving the first and second substrates relatively to each other by a predetermined amount more than the relative displacement amount and then moving them back to target positions.

2. The liquid crystal display apparatus manufacturing method according to claim 1, wherein while aligning the first and second substrates with each other, the first substrate is fixed, and the second substrate is moved with relative to the first substrate in a horizontal direction to align them with each other.

3. The liquid crystal display apparatus manufacturing method according to claim 2, wherein the second substrate is moved by X−

η

more than usual where X represents an ordered movement amount for the second substrate and n represents an actual movement amount of the second substrate that moved on the basis of the ordered movement amount.

4. A method of manufacturing a liquid crystal display apparatus, comprising:

adhering a first substrate and a second substrate with each other via a sealing agent made of a viscoelastic material; and

while aligning the first and second substrates adhered with each other at target positions by moving them relatively with each other, first moving the first and second substrates relatively to each other further than the target positions in a first direction, and then moving them relatively to each other in a second direction that is opposite to the first direction.

5. The liquid crystal display apparatus manufacturing method according to claim 4, wherein the movement amount of the second substrate in the first direction is determined such that an internal stress of the sealing agent at a point where the second substrate reaches the target position is zero, and a movement speed of the second substrate in the first and second directions is determined on the basis of the determined movement amount.

6. The liquid crystal display apparatus manufacturing method according to claim 5, wherein while aligning the first and second substrates with each other, the first substrate is fixed, and the second substrate is moved with relative to the first substrate in a horizontal direction to align them with each other.

7. The liquid crystal display apparatus manufacturing method according to claim 4, wherein a gap having a predetermined size is made between the first and second substrates.

8. The liquid crystal display apparatus manufacturing method according to claim 7, wherein the gap has a size of about 10 μ

m.

9. An apparatus for manufacturing a liquid crystal display apparatus, comprising:

a first holding device configured to hold a first substrate coated with a sealing agent made of a viscoelastic material such as to surround a display region thereof;

a second holding device configured to hold a second substrate on which an effective region is formed at a position corresponding to the display region of the first substrate, such that the second substrate opposes the first holding device;

a movement device configured to move at least one of the first and second holding devices in a vertical direction so as to adhere the first and second substrates to each other via the sealing agent, and then to move the first and second holding devices relatively to each other in a horizontal direction on the basis of an ordered movement amount, so as to align the first and second substrates with each other; and

a control device configured to move the first and second substrates relatively to each other by a predetermined amount more than the ordered movement amount while aligning the first and second substrates with each other by the movement device, so as to set the first and second substrates at target positions.

10. The liquid crystal display apparatus manufacturing apparatus according to claim 9, wherein the movement device aligns the first and second substrates with each other by moving the second substrate in a horizontal direction while fixing the first holding device.

11. The liquid crystal display apparatus manufacturing apparatus according to claim 9, wherein the second substrate is moved by X−

η

more than usual where X represents an ordered movement amount for the second substrate and η

represents an actual movement amount of the second substrate that moved on the basis of the ordered movement amount.

12. An apparatus for manufacturing a liquid crystal display apparatus, comprising:

a first holding device configured to hold a first substrate coated with a sealing agent made of a viscoelastic material such as to surround a display region thereof;

a second holding device configured to hold a second substrate on which an effective region is formed at a position corresponding to the display region of the first substrate, such that the second substrate opposes the first holding device;

a movement device configured to move at least one of the first and second holding devices in a vertical direction so as to adhere the first and second substrates to each other via the sealing agent, and then to move the first and second holding devices relatively to each other in a horizontal direction on the basis of an ordered movement amount, so as to align the first and second substrates with each other; and

a control device configured to move the first and second substrates relatively to each other further than the target positions in a first direction, and then move them relatively to each other in a second direction that is opposite to the first direction so as to return them to the target positions while aligning the first and second substrates adhered with each other by the movement device.

13. The liquid crystal display apparatus manufacturing apparatus according to claim 12, wherein the movement device aligns the first and second substrates with each other by moving the second substrate in a horizontal direction while fixing the first holding device.

14. The liquid crystal display apparatus manufacturing method according to claim 12, further comprising a control device configured to determine the movement amount of the second substrate in the first direction such that an internal stress of the sealing agent at a point where the second substrate reaches the target position is zero, and a movement speed of the second substrate in the first and second directions on the basis of the determined movement amount.