JP3165215B2 - LCD panel component mounting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounting apparatus for a liquid crystal panel, and more particularly, to a liquid crystal panel that is suction-supported on a holding stage, and has a step from the suction-supported surface of the liquid crystal panel. And, the component mounting portion that does not participate in the suction support, the backup surface is backed up with a step difference from the suction support surface, and in this state, the component mounting portion and the mounting component applied to this, The present invention relates to a component mounting apparatus for a liquid crystal panel which is joined while being pressed with a backup member by a pressing member.

[0002]

2. Description of the Related Art This type of apparatus conventionally uses a holding stage a as shown in FIG. The holding stage a has a suction supporting surface c for sucking and supporting the liquid crystal panel b, and a backup surface e for backing up the component mounting portion d of the liquid crystal panel b.
And are integrally formed with a predetermined step f.

As shown in FIG. 4, the liquid crystal panel b is composed of glass g, a polarizing plate h, a diffusion plate i, and a protective film j which are laminated on the front and back of the glass g in a single layer or laminated. .

The tab film k or the like of the liquid crystal panel b is bonded, for example, as shown in FIG. The plate h and the diffusion plate i were not reached, and nothing was stuck.

For this reason, there is a step m between the component mounting portion d and the other portions due to the presence or absence of the polarizing plate h and the diffusion plate i. The liquid crystal panel b has a diffusion plate i and the like forming the back surface. Is adsorbed and supported on the holding stage a.

Here, the step f of the holding stage a corresponds to the step m of the liquid crystal panel b, and the component mounting portion d of the liquid crystal panel b adsorbed on the suction support surface c makes the step m of the liquid crystal panel b itself. It is backed up in contact with the backup surface e of the holding stage a without any influence, and the heat bonding while applying pressure by the pressing tool n shown in FIG. 5 is achieved.

[0007]

However, the liquid crystal panel b
The unevenness of the step m varies depending on the presence or absence of the polarizing plate h and the diffusion plate i and the like attached to the back surface and the difference in thickness.

For this reason, when the step f is constant due to the integral formation of the suction supporting surface c and the backup surface e of the holding stage as in the conventional case, the liquid crystal panel b
Is larger or smaller than the step f of the holding stage a, the component mounting portion d of the liquid crystal panel b
However, when the liquid crystal panel b is inclined and the liquid crystal panel b is inclined and the component mounting portion d hits the backup surface e, and the pressing is performed by the pressing tool n, a bonding failure due to insufficient pressing occurs. Or the glass g of the liquid crystal panel b is damaged.

In order to cope with this, a dedicated holding stage corresponding to the difference in level m of the liquid crystal panel b is produced and used.

For this reason, various types of holding stages are required, and each time the type of the liquid crystal panel b is different, and each time the step m is different even for the same type of liquid crystal panel b, it is necessary to replace the holding stage a. This is causing an increase in product costs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal panel component mounting apparatus in which a holding stage is improved so as to be able to cope with a change in a level difference, and which does not have the above-mentioned conventional problems.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a part having a mounting surface on which components are mounted.
Product mounting part and a polarizing plate or its
There is a step between the component mounting part and another member
LCD panel with a stepped part to be mounted
And press the component to the component mounting part while holding the back side
Component mounting apparatus der of the liquid crystal panel that implements joined with
Thus, the first part for holding the component mounting portion from the back side
A holding portion, and a second holding portion for holding the step portion from the back side.
And a holding unit, wherein the back side of the liquid crystal panel is
In order to match the step between the component mounting part and the step part,
Adjustable height difference between the first holding part and the second holding part
It is characterized in that it is configured as a function .

[0013] Opposite to the back side for mounting parts
The height of the first holding part that backs up the pressing force from the side
And the height of the second holding portion not receiving the pressure is fixed.
The vertical movement can be adjusted. In this case, the liquid
Between the component mounting part and the step part that changes depending on the type of crystal panel
Control means for adjusting the height of the second holding portion in accordance with the difference;
Preferably, it is provided with a part of the second holding part.
Measure the distance to the back side of the component mounting part of the liquid crystal panel
A distance measuring unit for performing the measurement by the distance measuring unit.
The step between the component mounting portion and the step portion is calculated based on the value, and the second
Of the holding portion matches the calculated step with respect to the first holding portion.
The height of the second holding part up and down so that there is a difference in height
It may be adjusted.

[0014]

According to the above configuration of the present invention, the liquid crystal panel is
From the back side with a step with a step to the component mounting part
Hold and press the components to the component mounting part to join and mount
However, the first holding portion for holding the component mounting portion and the step portion
The difference between the height of the second holding part and the part holding part
Adjust so that it matches the step caused by the polarizing plate etc.
And adjust the level according to the type of LCD panel, etc.
It can respond to such differences.

Further, the pressing force for joining the components is backed up.
The height of the first holding part to be fixed is fixed, and
The height of the second holding portion is adjusted up and down to reduce the difference in height.
By adjusting the height, the mechanism for adjusting the height of the second holding portion is left.
The simple load guarantees a sufficient support function without any extra load
can do.

Further, a portion which varies depending on the type of liquid crystal panel
The height of the second holding portion corresponding to the step between the product mounting portion and the step portion
By providing control means for adjusting the vertical movement
It can automatically respond to the difference in the level difference, and is a part of the second holding part.
According to the distance measuring means provided in front of the component mounting part of the liquid crystal panel
Measurement including the step size due to the polarizing plate etc.
The distance can be set, and the control means adjusts the current height of the second holding portion.
It is known that the polarizing plate
The second step is calculated so as to correspond to this step.
The height of the holding part can be adjusted up and down.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid crystal panel component mounting apparatus as an embodiment of the present invention shown in FIGS. 1 and 2 will be described below.

As shown in FIG. 1, the apparatus of this embodiment is provided with two first and second transfer mechanisms 2 and 3 at the front of a body 1 for mounting components. The liquid crystal panel 4 is transferred onto the first holding stage 5 for temporarily mounting the tab film by the first transport mechanism 2 and is suction-supported on the first holding stage 5 to be used for temporarily mounting the tab film.

The liquid crystal panel 4 on which the tab film has been temporarily mounted on the first holding stage 5 is provided with a second transport mechanism 3 on a body 8 for component bonding, which is provided on a body 8 for bonding a tab film. The film is transferred onto the holding stage 6, supported by suction, and subjected to heat bonding with pressurization of the tab film.
The pressurizing tool 10 is provided on the fuselage 8 for such joining.

A component supply unit 111 for supplying a mounting component, such as a tab film 9, is provided at a rear portion of the body 1 facing the first holding stage 5, and a component supply unit 111 is provided on the upper surface of the body 1. A component mounting head 12 that picks up the supplied component and transfers it to the first holding stage 5 is provided.

The liquid crystal panel 4 is, for example, as shown in FIG.
A state in which an anisotropic conductive film 26 is mounted on the surface of the component mounting portion 11 on the body 1, comprising two laminated glasses 21 and 22, deflection plates 23 and 24 bonded to the front and back thereof, and a protective film 25. And the anisotropic conductive film 26
After the tab film 9 is temporarily mounted as shown in FIG.

The deflection plates 23 and 24 and the protective film 25 have not reached the component mounting portion 11 on which the anisotropic conductive film 26 is mounted.

For this reason, the component mounting section 11 and the liquid crystal panel 4
Between the deflecting plate 24 and the back surface of the deflecting plate 24, which is the surface to be attracted and supported by the first and second holding stages 5, 6.
Step 28 corresponding to the thickness of

For this purpose, the first and second holding stages 5,
6 between the suction support surface 31 that suctions and supports the suction support surface 27 of the liquid crystal panel 4 and the backup surface 32 that backs up the pressing of the component mounting portion 11 when the tab film 9 is joined from the back. The step 28 of the liquid crystal panel 4
Are provided to back up the suction support of the liquid crystal panel 4 and the component mounting section 11 in the first and second holding stages 5 and 6, and they float or tilt under the influence of the step 28. We are careful not to do it.

Thus, not only can the anisotropic conductive film 26 be temporarily mounted on the first holding stage 5, but also the second holding stage 6 can be used.
The joining of the tab film 9 with the above-mentioned pressurization can also be successfully achieved without excess or shortage and without the glass 21 and 22 of the liquid crystal panel 4 being damaged.

However, the liquid crystal panel 4 is different from the liquid crystal panel 4 in the presence or absence and the thickness of the polarizing plate 24 attached to the back surface thereof (the polarizing plate 23,
The thickness of the protective film 24 and the protective film 25 is usually about 0.2 mm, but differs depending on the specifications of the liquid crystal panel 4 and the front and back sides. ) Or furthermore, the step 28 varies depending on whether or not a diffusion plate is attached.

Therefore, assuming that the suction support surface 31 and the backup surface 32 of the second holding stage 6 that performs joining with pressurization are invariable, the step 28 of the liquid crystal panel 4 is equal to the step of the second holding stage 6. 33 is larger or smaller than 33, and the component mounting portion 11 of the liquid crystal panel 4
However, when the liquid crystal panel 4 inclines due to the liquid crystal panel 4 tilting and the component mounting portion 11 hitting against the backup surface 32 due to the inclination of the liquid crystal panel 4,
Insufficient pressurization may cause poor bonding, or the glass 21 and 22 of the liquid crystal panel 4 may be damaged.

Therefore, in the present embodiment, the second holding stage 6 is particularly configured as shown in FIG.

This will be described below.
And a block-shaped backup member 42 having a backup surface 32 are provided on a base 43 of the second stage 6. A suction hole 30 for sucking the liquid crystal panel 4 is opened in the suction support surface 31 of the suction support member 41.

The backup member 42 is fixed on the base 43 so as to have a predetermined supporting height S1.
Reference numeral 1 denotes a guide shaft 45 fixed to a guide block 44 fixedly mounted on a base 43 so as to be vertically movable, and is supported so as to be vertically movable.

The vertically movable suction support member 41
The screw shaft 48 provided directly on the base 43 and directly connected to the servomotor 47 is screwed into the passive portion 46 provided on the back surface of the base member 43, and the suction support member 41 is moved up and down by forward and reverse driving of the screw shaft 48. The support height S2 of the suction support surface 31 can be adjusted.

As a result, a step 33 between the suction support surface 31 and the backup surface 32 of the second holding stage 6 is formed.
Can cope with the variation of the step 28 due to the difference in the type of the liquid crystal panel 4 and the thickness of the deflecting plate 24.

The backup surface 32 and the suction support surface 31
Since the side of the suction support surface 31 that is not subjected to the pressure at the time of the joining is made movable by changing the dimension of the step with the above, the height adjustment structure of the suction support member 41 having the suction support surface 31 when joining is performed. Since no extra load is exerted by the pressurization, a simple one can guarantee a sufficient support function.

In the present embodiment, the following steps are taken in order to automatically make the size of the step 33 correspond to the step 28 of the liquid crystal panel 4.

A distance measuring sensor 51 is provided on a part of the suction support member 41.
Is fixed, and measures the distance between the back surface of the component mounting portion 11 of the liquid crystal panel 4 sucked and supported by the suction support member 41,
The distance measurement information is input to control means such as a microcomputer 52 or the like, and the suction support surface 2 of the liquid crystal panel 4 which is suction-supported
Supports the step 28 between the base 7 and the back surface of the component mounting section 11 by suction.
To Starring <br/> calculated by utilizing the occasional height of member 41 that is known, constitutes the measuring means of the step 28.

A servo motor 47 is connected to the microcomputer 52 via a drive circuit 53, and a step 33 between the fixed backup surface 32 and the movable suction support surface 31 according to the calculation result. The servo motor 47 moves the suction support member 41 up and down to a position suitable for the actual step 28 of the liquid crystal panel 4 supported by suction.
Control.

Therefore, in the second holding stage 6,
Each time the liquid crystal panel 4 is suction-supported, such control is automatically performed, and the joining of the tab film 9 and the like with pressurization is successfully achieved.

Immediately beside the backup member 42 on the base 43, a suction support block 54 for suction-supporting a portion of the tab film 9 that protrudes from the joint is fixedly provided.

Of course, such a step adjusting mechanism may be employed in the first holding stage 5 if necessary.

[0040]

According to the present invention, the component mounting portion is held.
Height between the first holding portion and the second holding portion holding the step portion
Difference due to the polarizing plate and the like between the component mounting part and the step part
Adjust to match the level difference, and the type of LCD panel
Can accommodate any differences in the steps due to
Possible to the, just proportion component mounting with pressure, and can be achieved successfully with good yield without such glass portion of the liquid crystal panel is damaged, it is possible to reduce the cost of the product.

[0041] not receive or pressure forces the height of the second holding portion
By adjusting the height difference by adjusting the vertical movement,
Not work is unnecessary load on the mechanism for adjusting the height of the second holding portion, it is possible to ensure sufficient supporting function in those simple, it can be relatively inexpensively achieved.

Further, by automatically adjusting the height in accordance with the difference in level of the liquid crystal panel , the height can be adjusted.
It special person hand of the eye is not required, it is possible to avoid the adjustments forget and Ayamacho integer problems, control of such automatic height
The liquid crystal is adjusted by a distance measuring unit provided in a part of the second holding unit.
The distance measurement result to the back side of the component mounting part of the panel is known and
A row based on a step calculated from the height of a certain second holding unit
I can.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a liquid crystal panel component mounting apparatus as one embodiment to which the present invention is applied.

FIG. 2 is a sectional view of a main part showing a second holding stage in the apparatus of FIG.

FIG. 3 is a plan view and a side view showing a conventional holding stage.

FIG. 4 is a partial side view illustrating an example of a liquid crystal panel.

FIG. 5 is a partial side view showing a component mounting state of the liquid crystal panel.

[Explanation of symbols]

 Reference Signs List 4 liquid crystal panel 6 holding stage 9 tab film 10 pressure tool 11 component mounting portion 27 suction support surface 28, 33 step 31 suction support surface 32 backup surface 41 suction support member 42 backup member 43 base 44 guide block 45 guide shaft 47 Servo motor 48 Screw shaft 51 Distance measuring sensor 52 Microcomputer 53 Drive circuit

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B23P 19/00 301-21/00 307 H05K 3/30 H05K 13/00-13/04 G02F 1/13 101

Claims (4)

(57) [Claims] 1. A component device having a mounting surface on which a component is mounted.
Attachment part, at least on the back side, polarizing plate or other
There is a step between the component mounting part and the member
A liquid crystal panel with a step and
Hold the back side and do not pressurize the part to the part mounting part.
Component mounting device of a liquid crystal panel for reluctant joined implement met
A first holding unit for holding the component mounting unit from the back surface side
And a second holding unit for holding the step from the back side
And the component mounting portion on the back side of the liquid crystal panel.
The first holding unit and the first holding unit
A liquid crystal panel component mounting apparatus configured to be able to adjust a difference in height from a second holding unit . 2. The device according to claim 1 , further comprising:
Of the first holding part to back up the pressure from the other side
The height of the second holding portion, which is fixed in height and does not receive the pressing force,
2. The liquid crystal panel component mounting apparatus according to claim 1 , wherein the height can be adjusted vertically . 3. The component of the liquid crystal panel according to claim 2, further comprising control means for adjusting the height of the second holding portion in accordance with a step between the component mounting portion and the step portion which changes depending on the type of the liquid crystal panel. Mounting device. Wherein providing a distance measuring means for measuring a distance to the rear surface of the component mounting portion of the liquid crystal panel to a portion of the second holding portion, the control means, component mounting based on the measured value of the distance measuring means Calculating the step between the step and the step, and moving the height of the second holding part up and down so that the second holding part has a height difference with respect to the first holding part that matches the calculated step. Claim 3 to adjust
3. A component mounting apparatus for a liquid crystal panel according to claim 1.