Hot pressing tool and hot pressing apparatus having the same

• US 7,992,619 B2
• Filed: 04/03/2006
• Issued: 08/09/2011
• Est. Priority Date: 09/08/2005
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Dong-Won, Kim, Tae Gyu, Hwang, Il Kwon
• Primary Examiner(s): SELLS, JAMES D
• Application Number:
  US11/395,260
• Publication Number:
  US 20070051251A1
• Time in Patent Office: 1,954 Days
• Field of Search: 156/580, 156/581, 156/583.1, 156/228, 100/315, 100/320, 100/321, 100/258.A, 100/258.R
• US Class Current: 156/583.1
• CPC Class Codes: B29C 2043/3613 applying pressure locally
• CPC Class Codes: B29C 33/08 for dielectric heating
• CPC Class Codes: B29C 43/52 Heating or cooling
• CPC Class Codes: B29C 65/18 using heated tools
• CPC Class Codes: B29C 65/305 involving the use of cartridge heaters
• CPC Class Codes: B29C 66/80 General aspects of machine operations or constructions and parts thereof
• CPC Class Codes: B29C 66/8122 characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
• CPC Class Codes: B29C 66/81261 Thermal properties, e.g. thermal conductivity, thermal expansion coefficient
• CPC Class Codes: B29C 66/81427 comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
• CPC Class Codes: B29C 66/8185 comprising means for compensating for the thermal expansion of the welding jaws or of the clamps means for tensioning resistive elements B29C65/229
• CPC Class Codes: B29C 66/8242 Pneumatic or hydraulic drives using fluid pressure directly acting on the parts to be joined B29C66/8266
• CPC Class Codes: B29C 66/8322 Joining or pressing tools reciprocating along one axis
• CPC Class Codes: B29K 2905/12 Iron
• CPC Class Codes: B29K 2909/02 Ceramics
• CPC Class Codes: B29L 2011/0016 Lenses
• CPC Class Codes: H05K 3/323 by applying an anisotropic conductive adhesive layer over an array of pads
• CPC Class Codes: H05K 3/361 Assembling flexible printed circuits with other printed circuits

Abstract

The present invention relates to a hot pressing tool and a hot pressing apparatus having the same. According to the present invention, a hot pressing head attaching an anisotropic conductive film (ACF) on a liquid crystal display (LCD) substrate and a heater block supplying heat to the hot pressing head have the same thermal expansion coefficient, and the heater block is provided with a hot pressing tool connected to a moving block by connection units. Also, there is provided a hot pressing apparatus, including the hot pressing tool, which is provided with a support capable of attaching the LCD substrate on the ACF and a transfer instrument. Thus, according to the present invention, the operation can continue with almost no deterioration of the oblateness of the hot pressing head. Also, since the hot pressing apparatus has the structure of connecting the heater block and the hot pressing head together simply by the combination bolts with no need for adjustment bolts, it can be easily manufactured. Also, it is possible to prevent the decrease of work efficiency, and damage to the adjustment bolts caused by excessive use of the adjustment bolts.

Claims

1. A hot pressing tool including a moving block connected to a transfer instrument to be capable of moving up and down, the hot pressing tool comprising:

a hot pressing head attaching an anisotropic conductive film (ACF) on a liquid crystal display (LCD) substrate;

a heater block having the same thermal expansion coefficient as the hot pressing head and including a plurality of heaters passing through the heater block in a width direction thereof; and

a connection unit connecting the heater block and the moving block,

wherein the heater block is fixed to the connection unit,

wherein a length direction of the connection unit extends in a direction parallel to a line connecting the hot pressing head, the heater block and the moving block,

wherein the moving block and the heater block are spaced apart from each other and connected to each other by the connection unit, and

wherein the connection unit is a plurality of adjustment bolts capable of adjusting the interval between the moving block and the heater block, thereby adjusting the oblateness of the hot pressing head, and the adjustment bolts are arranged in a line perpendicular to the length direction.

2. The hot pressing tool of claim 1, wherein the hot pressing head and the heater block are made of the same material.

3. The hot pressing tool of claim 2, wherein the hot pressing head and the heater block are made of stainless steel.

4. The hot pressing tool of claim 2, wherein the hot pressing head and the heater block are made of ceramic.

5. The hot pressing tool of claim 1, wherein the hot pressing head and the heater block are integrally formed.

6. The hot pressing tool of claim 5, wherein the hot pressing head and the heater block are manufactured by molding together.

13. The hot pressing tool of claim 1, wherein the heater block is fixed on the connection unit so that the heater block does not rotate relative to the connection unit.

7. A hot pressing tool comprising:

a support supporting a liquid crystal display (LCD) substrate;

a hot pressing head attaching an anisotropic conductive film (ACF) on the liquid crystal display (LCD) substrate;

a heater block having the same thermal expansion coefficient as the hot pressing head, the hot pressing head and the heater block being separate elements that are integral with each other, and including heaters;

a moving block provided to be spaced apart from the heater block;

a connection unit connecting the heater block and the moving block; and

a transfer instrument moving the moving block up and down,

wherein the heater block is fixed to the connection unit,

wherein a length direction of the connection unit extends in a direction parallel to a line connecting the hot pressing head, the heater block and the moving block, and

wherein the connection unit is a plurality of adjustment bolts capable of adjusting the interval between the moving block and the heater block, thereby adjusting the oblateness of the hot pressing head, and the adjustment bolts are arranged in a line perpendicular to the length direction.

8. The hot pressing tool of claim 7, wherein the hot pressing head and the heat block are made of the same material.

9. The hot pressing tool of claim 8, wherein the hot pressing tool and the heat block are made of stainless steel.

10. The hot pressing tool of claim 8, wherein the hot pressing tool and the heat block are made of ceramic.

11. The hot pressing tool of claim 7, wherein the hot pressing head and the heater block are manufactured by molding together.

12. An apparatus for a hot pressing head and a heater block;

the pressing head and the heater block being separate elements that define an integral structure,

the heater block being fixed to a connection unit connecting the heater block and a moving block, and

the moving block being provided to be spaced apart from the heater block,

wherein a length direction of the connection unit extends in a direction parallel to a line connecting the hot pressing head, the heater block and the moving block, and

wherein the connection unit is a plurality of adjustment bolts capable of adjusting the interval between the moving block and the heater block, thereby adjusting the oblateness of the hot pressing head, and the adjustment bolts are arranged in a line perpendicular to the length direction.