KR100886552B1 - Sticking device for display panel - Google Patents

Abstract

This invention is provided with the light irradiation part which incorporates a linear light source, and the light irradiation part movement mechanism which moves a light irradiation part, and irradiates the sealing compound between a light transmissive substrate with the light which has a linear irradiation area | region from a light irradiation part. In the bonding apparatus of a display panel which performs the bonding, even if a different sized contour is formed in the panel, it is possible to provide a device that can perform bonding without irradiating light to the liquid crystal.

On the light output side of the light irradiation part, a light shielding mask is formed in which a plurality of openings of different lengths are formed along the longitudinal direction of the linear light source. The length of each opening is provided in accordance with the length of the sealing compound which irradiates light of each drawing formed in the panel to be bonded, and slides a light shielding mask in the direction orthogonal to the longitudinal direction of a linear light source, and changes an opening. And the length of the irradiation area of the light radiate | emitted from a light irradiation part is changed.

Description

Display device bonding device {STICKING DEVICE FOR DISPLAY PANEL}

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the structural example of the bonding apparatus of the display panel of the Example of this invention,

2 is a view showing an internal structure of a light irradiation part;

3 is a view showing an example of a relationship between a sealing compound and a light irradiation region of a liquid crystal screen having different sizes formed on a substrate;

4 is a view showing a light shielding mask provided with an opening for shaping a light irradiation area into three types of lengths;

5 is a diagram showing an example of the configuration of a light irradiation part provided with a light shielding mask;

6 is a view of irradiating light using the second opening portion B of the light shielding mask,

7 is a view of irradiating light using the third opening C of the light shielding mask,

It is a figure which shows the bonding apparatus of the display panel which becomes a premise of this invention.

FIG. 9 is a view showing an example in which two kinds of flowers having different sizes are formed in one panel.

<Description of the symbols for the main parts of the drawings>

1: light irradiation unit 1a: lamp

1b: cylindrical mirror (shield) 2: frame

3: linear guide 4: light irradiation unit moving mechanism

5: work stage 6: aperture

7: light exit 20: panel

21: big picture 22: small picture

23a, 23b: sealing compound 31: mask drive mechanism

32: guide 33: rack gear

34: pinion gear M: shading mask

G: Hwawa

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display panel bonding apparatus in which a photocurable sealant between two light transmitting substrates is bonded by irradiating light in an assembling process of display panels such as a liquid crystal panel.

)을 형성하고 또한 2장의 광 투과성 기판을 접합하는 작용을 하는 시일제의 도포되는 위치가 바뀌어도, 선 형상의 가늘고 긴 조사(照射) 영역을 갖는 광에 의해, 시일제에만, 효율적으로 광을 조사하는 디스플레이 패널의 접합 장치로서, 특원2003-116689를 제안하였다.We change the number and size of a plurality of screens (pictures) formed on one light transmissive substrate, and each picture (

), And even if the application position of the sealing compound which functions to bond two light-transmissive substrates is changed, light is efficiently irradiated only to the sealing compound by the light having a linear elongated irradiation area. As a bonding apparatus for a display panel, Japanese Patent Application No. 2003-116689 has been proposed.

FIG. 8: is a figure which shows the bonding apparatus of the display panel which becomes a premise of this invention described in the said application.

In the apparatus shown in FIG. 8, many light irradiation parts 1-1 and 1-2 which have the rod-shaped lamp 1a are provided, and from the light irradiation parts 1-1 and 1-2, a rod-shaped lamp ( Light having a linear irradiation area 40 along the longitudinal direction of 1a) is irradiated. Moreover, the light irradiation part 1-1, 1-2 moves by the light irradiation part movement mechanism 4 independently in the direction orthogonal to the longitudinal direction of a rod-shaped lamp (drawing X direction), respectively.

In addition, the work stage 5 on which the panel 20 made of two light-transmissive substrates to be bonded is placed is configured to be rotatable 90 degrees in a plane.

In the panel 20, a large number of the outlines G are formed by the sealing agent 23 which is a photocurable resin between two light-transmissive substrates, and the liquid crystal is sealed inside the outlines G. As shown in FIG.

The plurality of light irradiation parts 1-1, 1-2 move based on the intervals (pitch) of the edges G formed on the panel 20, and the portion coated with the sealant 23. On the other hand, light irradiation is performed over the light transmissive substrate. Next, the work stage 5 is rotated 90 degrees and light irradiation is performed with respect to the sealing compound apply | coated in the direction orthogonal to the sealing compound which irradiated light. In this way, the panel 20 is joined.

The laminated panel 20 is divided | segmented (cut) by every frame | corner G, and it becomes a product, and is assembled as a display screen in a television or a computer.

 Conventionally, as shown in FIG. 8, the same size | diameter (shape) corrugation G was formed in one panel joined. However, in recent years, in order to minimize the panel area discarded by cutting after joining and to increase the use efficiency, as shown in Patent Document 1 (Japanese Patent Laid-Open No. 2004-212976), one panel having a different size is used. Have been formed.

However, when a different sized drawing is formed in one panel, the sealing material for making a large drawing and the sealing material for making a small drawing may not be aligned in a straight line.

FIG. 9 shows an example in which two kinds of structures having different sizes are formed in one panel 20 of a large gallery 21 and a small gallery 22. In the same figure, in the longitudinal direction of the panel 20, since it becomes a row of the same size | diagrams, the sealant 23b which makes the small canvas 22, or the seal which makes the large canvas 21 is made. Article 23a is aligned in a straight line.

However, in the transverse direction, rows of different sized outlines become rows, so that the sealing agents 23a and 23b are not aligned in a straight line.

Such a problem arises when using the bonding apparatus of FIG. 8 shown in the background art, in order to bond the panel in which the size | corners of different sizes are formed and the sealing agent is not aligned in a straight line.

As shown in FIG. 9, the light exiting from the light irradiation parts 1-1, 1-2 has the linear light irradiation area 40 which traverses the panel 20. As shown in FIG.

Therefore, in the horizontal direction of the panel 20 shown in FIG. 9, when light irradiation is carried out to the sealing compound 23b which makes the small canvas 22, the light irradiation area | region 40 becomes the large canvas 21, for example. The light is irradiated to the liquid crystal inside the cross. When light is irradiated to the liquid crystal, undesirable characteristic changes may occur, which causes product defects.

Moreover, when light irradiation is performed to the sealing compound 23a which makes the large flower cage 21, light is irradiated to the small flower cage 22, and the same problem as the above arises.

This invention is made | formed in view of the said situation, The objective is equipped with the light irradiation part which incorporates a linear light source, and the light irradiation part moving mechanism which moves this light irradiation part to one axis direction, The light from the said light irradiation part Is irradiated to a photocurable sealing compound between two light-transmissive substrates, and the display panel bonding apparatus which bonds to two light-transmissive substrates, even if a different sized picture is formed in one panel, light is irradiated to the liquid crystal It is to provide a device that can perform the bonding without having to be.

In this invention, the said subject is solved as follows.

A light shielding mask for shaping the length of the light irradiation area is provided on the light output side of the light irradiation part incorporating the linear light source. The light shielding mask is provided with a plurality of openings having different lengths in the longitudinal direction of the light irradiation part, that is, in the longitudinal direction of the linear light source incorporated in the light irradiation part.

 The length of each opening is matched with the length of the sealing compound of each structure formed in the panel which joins. That is, although it is longer than the length of the sealing compound which forms the window which irradiates light, it is set as the length which light is not irradiated to the liquid crystal in another window.

The light shielding mask in which the plurality of openings are formed is slid by a mask moving mechanism in a direction orthogonal to the longitudinal direction of the linear light source incorporated in the light irradiation part, which is the longitudinal direction of the light irradiation part. By doing in this way, the opening of a light shielding mask is converted according to the length of the sealing compound which irradiates light of each drawing, the length of a light irradiation area is changed, and light irradiation is performed only to a sealing compound.

In the present invention, since the length of the light irradiation area is changed by the light shielding mask in which the opening is formed in accordance with the length of the sealant of the flower formed on the panel, light can be irradiated only to the sealing compound of the target flower. Panels can be bonded without the need to irradiate undesired light onto the liquid crystals in the picture.

The structure of the bonding apparatus of the display panel which is an Example of this invention is demonstrated using FIG.

Fig. 1 is a perspective view showing the main structure of the entire bonding apparatus of the display panel. For convenience of understanding, a part of the frame or the like is omitted, and the display panel 20 (hereinafter referred to as a panel) is bonded from the light irradiation unit 1. Distances are shown to be wider than they actually are. In the actual apparatus, the distance from the lower part of the light irradiation part to the panel in the case of light irradiation is about 0.5 mm to 1 mm.

In addition, although the case where only one light irradiation part is provided in the same figure is shown, you may provide many light irradiation parts like FIG.

) 형상 미러(집광경)(1b)가 설치된다.FIG. 2 is a diagram illustrating the internal structure of the light irradiation part 1 of FIG. 1. As shown in the same figure, the light irradiation part 1 is a rod-shaped lamp 1a (for example, a high-pressure mercury lamp) which irradiates the light of the wavelength which hardens a photocurable sealing compound, for example, the light containing an ultraviolet-ray. , A metal halide lamp, and a tube extending along the longitudinal direction of the lamp 1a and reflecting and condensing light from the lamp 1a (

) -Shaped mirror (condensing mirror) 1b is provided.

Further, the lower portion of the light irradiating part 1 (the lower side in the drawing) has a light exit port 7 and directs the light from the lamp 1a via a light shielding mask M provided with a plurality of openings having different lengths. And light reflected by the mirror 1b (ultraviolet rays) is emitted.

Returning to FIG. 1, the light shielding mask M is supported by the guide 32 provided in the longitudinal direction both sides of the light irradiation part 1, and is provided along the guide 32 by the mask drive mechanism 31, and the light irradiation part It slides in the direction orthogonal to the longitudinal direction (drawing X direction) with respect to the longitudinal direction of the linear light source (rod-shaped lamp 1a) which is the longitudinal direction of (1). In addition, the detailed structure and operation | movement of the light shielding mask M are mentioned later.

The light irradiation part 1 is attached to the linear guide 3, and is moved by the light irradiation part moving mechanism 4 along the linear guide 3 to a direction X in figure. The linear guide 3 and the light irradiation part moving mechanism 4 are fixed to the frame 2 of the apparatus.

On the lower side (light emitting side) of the light irradiation part 1, the work stage 5 which mounts the panel 20 which performs bonding is provided. The panel 20 is formed by the sealing agent 23, and is conveyed by a conveyance mechanism (not shown) and placed on the work stage 5 in a state where the liquid crystal is sealed therein.

In addition, roughly position adjustment (pre-alignment) is performed by the conveying apparatus, and the panel 20 is the longitudinal direction of the rod-shaped lamp 1a of the light irradiation part 1, and the panel 20 to the work stage 5. ) Is placed at a predetermined position with a precision of ± 1 to 2 mm so that the direction in which the sealing agent 23 applied to the sheet extends coincide.

The work stage 5 is equipped with the rotation moving mechanism not shown, and rotates 90 degrees in the plane in which the liquid crystal panel 10 is placed. As a result, the panel 20 also rotates 90 degrees.

As mentioned above, the light shielding mask M is provided in the light exit port of the light irradiation part 1. The light shielding mask M is provided with many openings which shape the length of the light radiate | emitted from the light output part 1 with the length of the sealing compound of the drawing formed in the panel 20. As shown in FIG.

The structure of the light shielding mask M is demonstrated using FIG. 3 and FIG.

FIG. 3 is a diagram showing an example of the relationship between the sealing compound of different size and the light irradiation area formed on the panel.

In FIG. 3, the panel 20 is formed with two kinds of paintings, a large painting 21 and a small painting 22.

In such a case, when light irradiation with a sealing agent is to be performed by light having a linear elongated irradiation area, the sealing agent 23a of the large canvas 21 is positioned at the positions shown in FIGS. 1 and 5. ) And the sealant 23b of the small canvas 22 are aligned in a straight line, so light must be irradiated to both the sealant 23a and 23b. Therefore, the long light irradiation area 40 which traverses the whole panel 20 as shown in A of the figure is needed.

However, at the positions of FIGS. 2 and 4, the length (range in the length direction) of the light irradiation area 40 is shown in FIG. 2 so that light is irradiated only to the sealing compound 23b of the small structure 22. It needs to be shaped as shown in.

Similarly, at the position of the same figure (3), the length of the light irradiation area 40 needs to be shaped as shown in (C) in the figure so that light is irradiated only to the sealing compound 23a of the large structure 21. There is. In the above, the light irradiation area 40 irradiated from the light irradiation part 1 needs to be shaped into three types of length.

FIG. 4 is a view showing a light shielding mask provided with openings for shaping the light irradiation area into the three types of lengths. FIG. 4 is a plan view of the light shielding mask seen from the light irradiation part side.

The light shielding mask M is basically one plate, and when the sealing agent 23a of the large flower cage 21 and the sealing agent 23b of the small flower cage 22 are in a straight line, light is applied to both sealing agents. Light only in the first opening A for irradiating light, the second opening B for irradiating light only to the sealing agent 23b of the small corolla 22, and the sealing agent 23a of the large corolla 21. Three openings of the third openings C for irradiating are provided at regular intervals.

Moreover, in the longitudinal direction peripheral part of the opening of the light shielding mask M corresponding to the up-down direction of drawing, each opening (with the rack gear 33 which comprises the mask moving mechanism for moving the light shielding mask M, or an optical sensor) Holes a, b and c for detecting the positions of A, B and C are provided.

FIG. 5: is a figure which shows the structural example of the light irradiation part in which the light shielding mask M of FIG. 4 was provided, and this figure is sectional drawing perpendicular to the lamp longitudinal direction of the light irradiation part 1. FIG. In addition, the guide 32 which supports the light shielding mask M is abbreviate | omitted and shown in figure.

As shown to the same figure, the light shielding mask M is provided in the light output port 7 side of the light irradiation part 1. The pinion gear 34 of a stepping motor (not shown) meshes with the rack gear 33 provided in the light shielding mask M, and comprises the mask drive mechanism 31. As shown in FIG. As the pinion gear 34 rotates, the light shielding mask M moves in a direction orthogonal to the longitudinal direction of the linear light source (lamp 1a) which is the longitudinal direction of the light irradiation part 1, and the light irradiation part The positions of the openings A, B, and C are changed with respect to (1). As a result, the length of the light irradiation area 40 is changed.

In addition, the stepping motor is rotatable in both directions, so that the light shielding mask M moves in both directions.

Between the lamp 1a of the light irradiating part 1 and the light shielding mask M, an aperture 6 for shaping light incident on the light shielding mask M into a somewhat elongated slit shape is mounted. have.

When all the light from the lamp 1a is irradiated to the light shielding mask M, the aperture 6 will raise the temperature of the light shielding mask M, and in order to prevent this, in order to prevent this, in order to prevent this, Install.

Next, the procedure which irradiates light to the sealing compound of the panel 20 shown in FIG. 3 using FIG. 5, FIG. 6, and FIG. 7 using the bonding apparatus of this Example of FIG.

First, light is irradiated to a sealing compound from the position of FIG. 3 (1) which is an edge part of the panel 20. FIG. In this case, the sealing agent 23a of the large flower cage 21 and the sealing agent 23b of the small flower cage 22 are in a straight line, and light must be irradiated to both sealing agents. For that reason, the first opening A of the light shielding mask M is used.

Therefore, as shown in FIG. 5, the light shielding mask M is made into the light irradiation part 1 by the rack gear 33 and the pinion gear 34 which are the mask drive mechanism 31. As shown in FIG. The mask M is moved to be below the aperture 6 of the &quot; After completion of the movement, the panel 20 is irradiated with light through the first opening A. FIG.

In addition, the light shielding mask M is a light irradiation part by detecting by the optical sensor which does not show the hole a, b, c provided corresponding to each opening A, B, C shown in FIG. It stops at a predetermined position with respect to (1).

When light irradiation to the position of FIG. 3 (1) is complete | finished, the light irradiation part 1 stops light irradiation once, and moves to the position of FIG. 2 by the light irradiation part moving mechanism 4. .

In the position of (2), light should be irradiated only to the sealing agent 23b of the small structure 22. For that reason, the second opening B of the light shielding mask M is used.

Therefore, as shown in FIG. 6, the light shielding mask M is moved so that the 2nd opening B may be below the aperture 6 of the light irradiation part 1 by the mask moving mechanism 31. As shown in FIG. . After completion of the movement, the panel 20 is irradiated with light through the second opening B. FIG.

In addition, in the position of (2), since two small canvases 22 are formed side by side, the width of the second opening B of the light shielding mask M is formed in accordance with the interval of the small canvas 22, Light irradiation can be performed simultaneously with two sealing compound 23b which the small structure 22 adjoins.

When light irradiation to the position of FIG. 3 (2) is complete | finished, the light irradiation part 1 stops light irradiation once, and is moved to the position of FIG. 3 by the light irradiation part moving mechanism 4. do.

In the position of (3), light should be irradiated only to the sealing compound 23a of the large structure 21. For that reason, the third opening C of the light shielding mask M is used.

Therefore, as shown in FIG. 7, the 3rd opening C is moved below the aperture 6 of the light irradiation part 1 from the mask moving mechanism 31. FIG. After the end of the movement, the panel 20 is irradiated with light through the third opening C.

  When light irradiation to the position of FIG. 3 (3) is complete | finished, the light irradiation part 1 stops light irradiation once, and moves to the position of the same figure 4 by the light irradiation part moving mechanism 4. .

In addition, in the position of (3), since two large windows 21 are formed side by side, the width of the third opening C of the light shielding mask M is formed in accordance with the interval of the large windows 21, Light irradiation can be performed simultaneously with the two sealing compound 23a which the large structure 21 adjoins.

Since the arrangement | positioning of a sealing compound is the same as FIG. 2 in the position of FIG. 3 (4), the light shielding mask M is moved similarly to FIG. 6, and light is irradiated through the 2nd opening B. FIG. When light irradiation to the position of (4) is complete | finished, the light irradiation part 1 stops light irradiation once, and moves to the position of (5) by the light irradiation part moving mechanism 4.

In the position of (5) of FIG. 3, since the arrangement | positioning of a sealing compound is the same as that of (1) of the same figure, like FIG. 5, the light is irradiated through the 1st opening A and the mask M moves. The light irradiation to the sealing compound of the longitudinal direction in FIG. 3 of the panel 20 is complete | finished as mentioned above.

Subsequently, light irradiation is performed to the sealing compound of the horizontal direction of the panel 20. Therefore, the stage 5 on which the panel 20 is placed rotates 90 degrees.

In the horizontal direction of the panel 20, since the sealing agents 23a and 23b are in a straight line at any location, the light is irradiated to the sealing compound of each position using the opening A of the light shielding mask M. FIG. do. The panel joining operation is completed above.

In addition, when irradiating light to the sealing compound of the horizontal direction of the panel 20, instead of rotating the stage 5, the frame 2 which supports the light irradiation part 1 may rotate 90 degrees, You may move the panel 20 to another apparatus in which the longitudinal direction of a irradiation part differs by 90 degrees.

Since the size and shape of the contour formed on the panel vary depending on the type of the product in which it is used, and the length of the sealant also changes accordingly, many kinds of the length of the opening formed in the light shielding mask are required.

Therefore, as many kinds of panels to perform bonding are provided as many light-shielding masks, and each opening of the light-shielding mask is provided with the opening according to the length of the sealing compound of the structure formed in each panel. And every time the kind of panel to perform bonding is changed, it replaces suitably with the light shielding mask which provided the opening corresponding to it.

In addition, as used herein, "an opening matched to the length of the drawing sealant" means that both the case of simultaneously irradiating light to the sealing compound of the drawing of different size as shown in (1) of FIG. It is an opening longer than the length of the sealing compound, and, on the other hand, when light irradiation is carried out only on the sealing compound of one drawing as shown in FIG. 3 (2) or (3), the sealing compound length of the drawing which irradiates light Although longer, it indicates that the opening has a length such that light is not irradiated to the liquid crystals of the other contours.

In addition, in the above embodiment, the size of the outlines formed in the panel is shown only in the case of two types of large and small, but even if three or more different sized outlines are formed, the openings provided in the light shielding masks are used to seal each of the outlines. By providing according to the length of an agent, it can respond similarly to the said two types.

In the above embodiment, the case where a rod-shaped high-pressure mercury lamp or a metal halide lamp is used as an example of a linear light source incorporated in the light irradiation part has been described as an example. LEDs and LDs (laser diodes) emitting light are also put into practical use, and a plurality of such LEDs or LDs arranged in a line shape in parallel may be used as a light source.

 In the present invention, since the length of the light irradiation area is changed by the light shielding mask in which the opening is formed in accordance with the length of the sealant of the flower formed on the panel, light can be irradiated only to the sealing compound of the target flower. Panels can be bonded without the need to irradiate undesired light onto the liquid crystals in the picture.

Claims (1)

And a light irradiation unit moving mechanism for embedding a linear light source, and a light irradiation unit moving mechanism for moving the light irradiation unit in a direction orthogonal to the longitudinal direction of the linear light source, and transmitting light from the light irradiation unit to two pieces of light. In the bonding apparatus of the display panel which irradiates the photocurable sealing compound between board | substrates, and bonds the said two light-transmissive substrates, The light irradiation part includes a light shielding mask having a plurality of openings having different lengths in the longitudinal direction of the linear light source, and moving the light shielding mask in a direction orthogonal to the longitudinal direction of the linear light source to switch the openings. A display panel bonding apparatus, characterized in that a mask moving mechanism is provided.

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