Optics: measuring and testing – Inspection of flaws or impurities
Reexamination Certificate
2001-10-18
2004-09-07
Adams, Russell (Department: 2851)
Optics: measuring and testing
Inspection of flaws or impurities
C356S239300, C349S058000, C324S500000, C324S537000, C324S758010, C324S765010, C324S701000, C324S763010
Reexamination Certificate
active
06788403
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a checking machine, and more particularly to a checking machine for being used in a fabricating process of a display module and checking a position of a tape automated bonding (TAB) region.
BACKGROUND OF THE INVENTION
In the fabricating process of a liquid crystal display module, assembling a printed circuit board is performed after a tape automated bonding (TAB) region provided on a panel of the liquid crystal display. Before assembling the printed circuit board, a checking step performed by a checking machine is necessary for confirming whether the TAB region is in the standard position.
Please refer to FIG.
1
.
FIG. 1
is a schematic view showing a display module having a screen region
10
and a TAB region
20
.
Please refer to FIG.
2
.
FIG. 2
is a schematic view showing a conventional checking machine for on line bonding (OLB). The checking machine includes a main body
1
and a test plate
2
. The main body
1
includes a main holder
11
and a transparent or hollow cover
12
. A back light source
13
is installed in the main holder
11
. The test plate
2
includes a supporting plate
21
and a splint
22
. The supporting plate
21
has a circuit plate
23
for the test. The supporting plate
21
and the splint
22
both have hollow portions. The hollow portions are used for a beam from the back light source
13
passing through when the display is clipped between the supporting plate
21
and the splint
22
. In addition, the checking machine further includes a fixing device
14
. The fixing device
14
includes a pressing shaft
141
linking a hoisting mechanism
142
.
The checking step for checking the position of the TAB region is illustrated as follows. The assembly of the display module clipped between the supporting plate
21
and the splint
22
is placed on the main holder
11
, the cover
12
is covered on the assembly, and the back light source
13
is turned on. The pressing shaft
141
is pressed downward, and the hoisting mechanism
142
is raised. Thus, the test plate
2
is tightly clipped between the main holder
11
and the cover
12
, thereby the TAB region
20
on the display module is electrically connected to the circuit plate
23
.
The circuit plate
23
positioned on the supporting plate
21
could represent the circuit plate, which would be assembled on the display module in the following fabricating process. Hence, the state of electric conduction between the TAB region
20
and the circuit plate
23
is checked to represent the state of the TAB region. The state of electric conduction between the TAB region
20
and the circuit plate
23
is shown on the screen of the display module. Only the display module having the standard TAB region could be assembled with a printed circuit board.
In the conventional checking machine, the panel
111
of the main holder
11
is a horizontal panel. The user should bend his back to look at the screen of the display module, or a view angle a shown in
FIG. 3
would occur. Moreover, the angle &agr; between the line of the user' vision and the normal
16
of the screen is larger, and the brightness of the screen is slighter. The conventional checking machine has some drawbacks such as the conventional checking machine is operated laboriously and the checking effect is decrease owing to the existence of the view angle.
The present invention provides a checking machine for being used in a fabricating process of a display module and checking a position of a tape automated bonding (TAB) region to overcome the drawbacks of the conventional checking machine.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a checking machine having an inclined panel for a user to check a position of a tape automated bonding (TAB) region without the problem of the view angle.
It is another object of the present invention to provide a checking machine for checking a position of a tape automated bonding (TAB) region and saving strength by using a pressure-drawing module as a fixing device.
It is an aspect of the present invention to provide a checking machine for being used in a fabricating process of a display module and checking a position of a tape automated bonding (TAB) region.
In accordance with the present invention, the checking machine includes a main holder having an inclined panel positioned at an inclination &bgr; relative to the horizontal, wherein the range of the inclination &bgr; is 0°<&bgr;≦90°, a test plate having a first hollow portion for suiting a size of the display module and a circuit plate disposed around the first hollow portion for suiting the position of the tape automated bonding region, and a fixing device for fixing the test plate to the inclined panel, thereby the tape automated bonding region is electrically connected with the circuit plate.
Preferably, the range of the inclination &bgr; is 20°≦&bgr;≦60°.
In addition, the test plate further includes a supporting plate having the circuit plate thereon and a second hollow portion for receiving the display module, and a splint having a third hollow portion for covering on the supporting plate, thereby the display module is clipped between the supporting plate and the splint.
The checking machine further includes a back light source disposed in the main holder for providing a beam for checking the display module.
The fixing device includes a first button for generating an activation command, an X-axial pressure-drawing module for moving toward X-axial direction to fix a first end of the test plate in response to the activation command, and a Y-axial pressure-drawing module for moving toward Y-axial direction to fix a second end of the test plate in response to the activation command.
Preferably, the X-axial pressure-drawing module is one of a pneumatic module and a hydraulic module.
Preferably, the Y-axial pressure-drawing module is one of a pneumatic module and a hydraulic module.
Preferably, one of the X-axial pressure-drawing module and the Y-axial pressure-drawing module is a motor-and-cam module.
Moreover, the fixing device further includes a second button for generating an angle-regulating command, and a Z-axial pressure-drawing module for moving toward a Z-axial direction to pivot the inclined panel, thereby regulating the inclination &bgr; of the inclined panel relative to the horizontal.
Preferably, the Z-axial pressure-drawing module is one selected from a group of a pneumatic module, a hydraulic module and a motor-and-cam module.
In addition, an end of the inclined panel is connected to the main holder, and the inclination &bgr; is regulated by a pivot of the inclined panel.
It is another aspect of the present invention to provide a checking machine for being used in a fabricating process of a display module and checking a position of a tape automated bonding (TAB) region.
In accordance with the present invention, the checking machine includes a main holder having an inclined panel positioned at an inclination &bgr; relative to the horizontal, wherein the range of the inclination &bgr; is 0°<&bgr;23 90°, a test plate for supporting the display module, and a fixing device for fixing the test plate to the inclined panel, thereby the tape automated bonding region is checked, wherein the fixing device includes a first button for generating an activation command, and a pressure-drawing device for moving toward the test plate to fix the test plate to the inclined panel.
In addition, the pressure-drawing device includes an X-axial pressure-drawing module for moving toward X-axial direction to fix a first end of the test plate in response to the activation command, and a Y-axial pressure-drawing module for moving toward Y-axial direction to fix a second end of the test plate in response to the activation command.
Furthermore, the fixing device includes a second button for generating an angle-regulating command, and a Z-axial pressure-drawing module for moving toward a Z-axial direction to pivot the inclined panel, thereby regulating the
Adams Russell
Cruz Magda
Hannstar Display Corp.
Kirton & McConkie
Krieger Michael F.
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