KR100653746B1 - Inspecting apparatus of flat panel display - Google Patents

Abstract

An apparatus for inspecting a display panel is provided to align a work table on which a inspected object is mounted with accuracy by locating two rotary center structures at both ends of a movable table on which the work table is located. An apparatus(100) for inspecting a display panel includes first and second supports, an X-axis moving unit(132), and an alignment unit(120). The first and second supports are located under a movable table(122) and support the movable table such that the movable table is horizontally rotated. The first and second supports are arranged distant from each other. The X-axis moving unit supports the first and second supports and is horizontally moved on an X-axis by an X-axis driver. The alignment unit includes a Y-axis moving unit(124) that supports the X-axis moving unit and is moved on a Y-axis by a Y-axis driver.

Description

Inspection Equipment for Display Panels {INSPECTING APPARATUS OF FLAT PANEL DISPLAY}

1 is a perspective view of a display panel inspection equipment according to an embodiment of the present invention;

2 and 3 are views for explaining the configuration of the alignment unit shown in FIG.

4 and 5 are views showing a rotating state of the moving table;

6 is a schematic configuration diagram of an alignment unit of the conventional display panel inspection equipment.

Explanation of symbols on the main parts of the drawings

102: base

110: work table

120: alignment unit

122: moving table

The present invention relates to inspection equipment for display panels, and more particularly, to inspection equipment capable of inspecting small display panels.

In general, flat panel displays such as liquid crystal displays (TFT-LCDs) are rapidly progressing in size and resolution due to mass production technology and achievements in R & D, resulting in not only notebook computers but also large monitors. It is also developed as an application product and gradually replaces existing cathode ray tube (CRT) products, and its weight in the display industry is gradually increasing.

Such a flat panel display device performs a lighting test at the final stage of the manufacturing line. The lighting test uses the probe unit to perform disconnection inspection, color inspection, and visual inspection of each data line and gate line of a flat panel display (hereinafter referred to as a display panel).

Recently, the demand for small display panels such as LCD panels used in mobile phones is increasing rapidly. Among the equipment for inspecting such small display panels, several unit display panels can be inspected for stick type LCD panels connected to each other. Inspection equipment having a probe unit having a plurality of inspection tips is used.

In the inspection equipment for inspecting such stick-type LCD panels, the alignment of the work table 16 is the movement of the X, Y moving plates 12, 14 and the rotational movement about the rotation axis c as shown in FIG. Because it is made by the, there is a disadvantage that various positions and angle rotation is not made properly according to the user's request.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a new type of display panel inspection equipment capable of rotating various positions and angles according to a user's request.

Display panel inspection equipment of the present invention for achieving the above object is a first and second support for supporting the movable table to the horizontal rotation in the state in which the bottom surface of the moving table spaced from each other; An X-axis moving unit which is horizontally moved on the X-axis by an X-axis driving unit while supporting each of the first and second support units; And an alignment unit including a Y-axis moving unit which is moved to the Y-axis by a Y-axis driving unit while supporting the X-axis moving unit.

According to an embodiment of the present invention, the display panel inspection equipment is installed on the moving table of the alignment unit and the display table for the display panel for the inspection is placed on the front and located on the work table and connected to the display panels It may include a probe unit having the inspection tips.

According to one embodiment of the present invention, each of the first support portion and the second support portion includes an inner ring supporting the bottom surface of the moving table and an outer ring supported on the X-axis moving portion. It can be made of a bearing.

According to one embodiment of the present invention, the X-axis moving unit includes a pair of X-axis moving units each having a moving plate supporting the first and second support portions and horizontally moved by the X-axis driving unit. It may include.

According to an embodiment of the present invention, the Y-axis moving unit supports a pair of X-axis moving units, and a pair of Y-axis including a pair of moving plates that are horizontally moved by the Y-axis driving unit, respectively. It may include a mobile unit.

For example, embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited by the embodiments described below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Accordingly, the shape of the elements in the drawings and the like are exaggerated to emphasize a clearer description.

Exemplary embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5. In addition, in the drawings, the same reference numerals are denoted together for components that perform the same function.

1 is a perspective view of a display panel inspection equipment according to an exemplary embodiment of the present invention, and FIG. 2 and FIG. 3 are views for explaining the configuration of the alignment unit shown in FIG. 1.

1 to 3, the display panel inspection apparatus 100 of the present invention is a device for inspecting a test object of a stick type in which a plurality of unit LCD panels are connected to each other.

The basic intention of the present invention is to more precisely align the work table 110 on which the test object 10 is placed. In order to achieve this, the display panel test equipment 100 of the present invention is equipped with a work table 110. The moving table 122 is characterized in that it has two rotation center structure to enable horizontal rotation at both ends.

Hereinafter, in order to simplify the description and make it easier to understand, the left and right directions and the front and rear directions in the plane parallel to the liquid crystal display panel arranged horizontally on the inspection equipment are referred to as the X direction and the Y direction, and the liquid crystal display panel The direction perpendicular to is called the Z direction.

The display panel inspection apparatus 100 of the present invention largely includes a base 102, an alignment unit 120, a work table 110, and a probe unit 104.

The work table 110 is provided on the movement table 122 of the alignment unit 120. The work table 110 is provided with a test object 10 of a stick type in which a plurality of unit LCD panels are connected to each other. Although not shown in detail, the work object 110 is provided between the work table 110 and the moving table 122. The backlight unit 112 may be provided to be illuminated to illuminate from the rear. Here, the backlight unit 112 does not use the backlight unit when it is desired to inspect a panel capable of self-emission according to the type of display panel.

In front of the work table 110, a conventional probe unit 104 having probe blocks (probes) 106 in electrical contact with the LCD panels of the inspection object 10 mounted on the work table 110 is disposed. . The probe unit 104 includes a manifold block that fixes the probe block. This probe unit 104 is provided in the support part 108 which has a lifting drive part (not shown). The probe unit is electrically connected to or disconnected from the LCD panels of the inspection object 10 placed on the work table 110 while being moved up and down by the lift driver.

For accurate connection between the probe blocks 106 of the probe unit 104 and the connection terminals of the LCD panels of the inspection object, the work table 110 on which the inspection object is placed is moved table of the alignment unit 120. Aligned by the movement of 122.

As shown in FIGS. 2 to 4, the alignment unit 120 has a function of horizontally rotating the moving table 122 (work table installed on the moving table) in the X direction, the Y direction, and the Z axis direction. . Looking at the alignment unit 120 in more detail, the Y-axis moving unit 124 is installed on the base 102, the X-axis moving unit 132 is installed on the Y-axis moving unit, the X-axis moving unit 132, a moving table 122 is installed at the top.

The Y-axis moving unit 124 consists of a pair of Y-axis moving units 124a which are arranged side by side, and the Y-axis moving unit 124a is a guide part 126 and a Y along the guide part 126. Y-axis moving plate 128 to be moved in the axial direction and Y-axis moving plate 128 to provide a driving force for moving the Y-axis moving plate 128 in the Y-axis direction. The guide part 126 includes a guide rail 126a installed in the box-shaped frame 125 in the Y-axis direction, and a guide block 126b installed on the bottom surface of the Y-axis moving plate 128. The Y-axis drive unit 130 includes a servo motor 130a, a ball screw 130b, and a screw nut 130c installed on the bottom surface of the Y-axis moving plate 128. This pair of Y-axis moving units are individually controlled.

The X-axis moving unit 132 is composed of a pair of X-axis moving unit 132a which is installed long in the X-axis direction. Similar to the Y-axis moving unit 124a, the X-axis moving unit 132a moves in the X-axis direction along the guide portion 134 including the guide rail 134a and the guide block 134b, and the guide portion 134. The X-axis moving plate 138 and the X-axis moving plate 138 is provided with an X-axis driving unit 136 for providing a driving force for moving in the X-axis direction. Each of the box-shaped frame 133 on which the guide part 134 and the X axis drive part 136 of the X axis moving unit 132a are installed is installed on the Y axis moving plate 128. Here, the X-axis moving part 132 constitutes only one X-axis driving part 136 in its structure, and is provided over two frames 133. The mounting state is shown in detail in FIG. 3. That is, it can be seen that the servomotor 136a of the X-axis driving unit 136 is installed in one frame 133 and the ball screw 136b is installed in the other frame 133.

The X-axis moving plates 138 of the X-axis moving part 132 are provided with first and second support parts (hereinafter referred to as bearings) 140a and 140b each formed of bearings. These bearings 140a and 140b include an inner ring 142 supporting the bottom surface of the moving table 122 and an outer ring 144 installed on the X-axis moving plate 138 of the X-axis moving unit. do. Thus, the movement table 122 is supported at both ends by two bearings 140a and 140b to enable horizontal rotation, and the movement table adjusts the rotation angle according to the Y-axis movement distance between the Y-axis movement plates 128. It becomes possible.

Looking at the alignment of the movement table in the alignment unit 120 configured as described above are as follows. First, the movement table 122 is aligned in the X-axis direction according to the X-axis movement plate 138 that is slid by the X-axis drive unit 132. The Y-axis alignment of the movement table 122 is aligned in the Y-axis direction according to the pair of Y-axis movement plates 128 that are slid by the two Y-axis drives 130. On the other hand, the rotation of the movement table 122 is able to adjust the rotation angle by adjusting (running) the Y-axis movement distance between the Y-axis movement plate 128, as shown in Figures 4 and 5 By moving the Y-axis moving plate 128 forward of the left Y-axis moving plate 128, the moving table 122 is rotated about two bearings 140a and 140b. And, as the distance of the rotation axis is increased more than twice as compared with the prior art, it is possible to more precisely align the work table on which the inspection object is placed.

On the other hand, the present invention can be variously modified in the display panel inspection equipment having the above configuration and may take various forms. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the above description, but rather includes all modifications, equivalents and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood to do.

As described above, the inspection equipment of the present invention has two rotation center structures to enable horizontal rotation at both ends of the moving table on which the work table is mounted, so that the work table on which the inspection object is placed can be more precisely aligned. Has an effect.

Claims (4)

For display panel inspection equipment: An alignment unit having a movement table horizontally rotated in the X-axis, Y-axis horizontal movement and Z-axis direction; A work table installed above the moving table and having display panels for inspection in front; And A probe unit positioned on the work table and having test tips connected to the display panels; The alignment unit First and second support portions supporting the movable table to be horizontally rotated while the lower surfaces of the movable table are spaced apart from each other; An X-axis moving unit which is horizontally moved on the X-axis by an X-axis driving unit while supporting each of the first and second support units; And And a Y-axis moving unit which is moved to the Y-axis by the Y-axis driving unit while supporting the X-axis moving unit. The method of claim 1, Each of the first support portion and the second support portion And a bearing including an inner ring for supporting the bottom of the moving table and an outer ring for supporting the X-axis moving part. The method of claim 2, The X-axis moving unit And a pair of X-axis moving units each supporting the first and second supporting parts and having a moving plate horizontally moved by the X-axis driving part. The method of claim 3, The Y-axis moving unit And a pair of Y-axis moving units supporting each of the pair of X-axis moving units and having a pair of moving plates each horizontally moved by the Y-axis driving unit.

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