JPH09304130A - Inspecting equipment of liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate fitting of LCD to be inspected, while making an operator' s checking attitude fit to execute checking. SOLUTION: An inspecting table 200 having an X-Y table at least is disposed so that it covers an opening of a case body 100. This inspecting table 200 is made rotatable by a rotating shaft 201 on one side of the opening so that it can be controlled to be in a first attitude wherein an object (LCD) of inspection is brought to a state of being raised obliquely and in a second attitude wherein the object is brought to a horizontal state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus used for conducting tests, inspections, etc. by bringing a probe into contact with a connection pattern or the like of a liquid crystal display device (referred to as LCD), and particularly improving workability. The present invention relates to an inspection device for a liquid crystal display device.

[0002]

2. Description of the Related Art When testing and inspecting the lighting state of an LCD, the LCD is placed flat on a pallet and the pallet is positionally adjusted in the X-axis direction, the Y-axis direction, and the rotation (θ) direction. Then, a probe installed at a predetermined position is brought close to the connection pattern to make an electrical contact, and a test and an inspection are performed.

An apparatus for adjusting a pallet is constructed by stacking an X stage for the X axis direction, a Y stage for the Y axis direction, and a θ stage for the θ direction. When adjusting the position of the pallet and the LCD on the upper surface of the pallet, the position of the pallet is monitored by a video camera, and the adjustment position pattern is displayed for the adjustment work.

Next, the probe device is lowered from the upper surface side, the probe is brought into contact with the LCD connection pattern, an electric signal is supplied, the LCD is driven, and it is inspected whether or not there is a defect in the display section. . If there is a defect, the correct color may not be expressed or a non-lighted area may occur. In addition, the display will be inspected for unevenness and for stable lighting.

Here, since the operator is observing the LCD display section in the horizontal state when observing the LCD, it is very difficult to see. Therefore, there is a problem that an inspection error is likely to occur. Furthermore, the operator must observe the LCD display unit in a horizontal state in a drooping posture, which causes a problem of being easily tired.

In order to solve the above inconvenience, it may be considered that the arrangement state of the table of the device is slanted when facing from the front so that the LCD display section faces the observer. However, if you do this, the LCD
There is a problem that the workability is deteriorated when the pallet is loaded.

[0007]

As described above, the conventional inspection apparatus for a liquid crystal display device has the problems that inspection mistakes are likely to occur and the posture of the operator tends to be tired. Therefore, the present invention prevents the inspection error by making the inspection posture of the operator easy to inspect, and even if it does in this way, the liquid crystal that does not become inconvenient to load the LCD to be inspected It is an object to provide an inspection device for a display device.

[0008]

According to the present invention, an object to be inspected can be arranged on the upper surface of an inspection table having at least an XY table, and the front side of the inspection table can be
A first posture in which a rotating portion having a rotation axis in a lateral direction is provided, and the entire XY table is rotated about the rotating portion so that the inspection target is obliquely lifted, and the rotating portion. It is possible to take a second posture in which it becomes a horizontal state by the rotation of.

According to such means, when the object to be inspected is loaded, it is loaded in the second posture to improve the workability, and the inspection table is rotated from the second state to the first position. When the state is set, the table is controlled to position the LCD, and in the first state, the observer can easily see the LCD from the front.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the present invention, and shows a simplified cross-sectional structure. Reference numeral 100 denotes a housing having an upper surface opening, and an inspection table 200 is provided inside the housing 100 so as to close the opening. This inspection table 200 has a frame 202 that holds the entire table and has a rotating portion having a rotation shaft 201 in the lateral direction on the side (front side) where an observer for inspection is located. At least an X and Y table is provided inside the frame 202. In this embodiment, an X, Y, θ table 203, and a Z table 204 are provided.
The movement can be adjusted in the Z and θ directions. The control circuit unit 300 for this movement adjustment is provided in the housing.

On the upper surface of the pallet slide plate 205, a pallet 206 for holding an object to be inspected (liquid crystal display device) can be slid and inserted from the front side. Pallet 2
When 06 is inserted and the inspection is started, the backlight 20 provided below the pallet slide plate 205
7 is lit.

Further, a positioning camera 208 is arranged at the top end of the frame 202, and the pallet 206 (LCD) is adjusted while moving and adjusting the pallet slide plate 205 in the X, Y, Z, and θ directions. When performing the position alignment, the positioning camera 208 feeds back the position information to the control circuit unit 300 while imaging the LCD.

Further, a frame-frame type probe unit 209 is arranged on the upper surface of the pallet 206, and at the time of inspection, the probe of the probe unit 209 descends and comes into contact with a predetermined connection terminal of the LCD for inspection. It becomes a state.

In the inspection device constructed as described above, the inspection table 200 as a whole is centered around the rotary shaft 201 and is shown in FIG.
The object to be inspected (LCD) is rotated as shown by the dashed line.
Can take a first posture in which it is raised diagonally and a second posture in which it is in a horizontal state as shown by the solid line in the figure.

FIG. 2 is an external view of the second horizontal posture, which is suitable for inserting and removing the pallet 206. Therefore, the workability is good for mounting and inserting the LCD on the pallet 206. LC
When D is inserted, the table is controlled and aligned for that inspection. At the same time, the entire inspection table 200 is lifted as shown in FIG. FIG.
When the state becomes, the alignment work is completed and the probe of the probe unit 209 is in a state of being connected to a predetermined terminal. Then, an electric signal is supplied to the LCD, and a check is started as to whether or not the LCD display is accurately performed. At this time, according to this apparatus, the inspection table 200 is lifted up as shown in FIG. 3 to make the surface of the LCD easy to see, so that the observer can keep the posture in a natural state for the inspection and is not tired. ,
Further, since the angle is easy to observe, there is an advantage that an inspection error is unlikely to occur.

The tilt angle in the tilted state as shown in FIG. 3 can be initially set by adjusting a knob (not shown) of the operation unit 111 at the beginning of the examination by the observer. That is, there is an optimum angle depending on the height of the observer, whether the inspection is performed while sitting on the chair, or when the inspection is performed while standing. Further, if the inspection is not performed in the horizontal state and the display is tilted as shown in FIG. 3, the surface of the LCD comes closer to the observer, which facilitates the inspection. Also, FIG.
It takes some time until the state becomes, but this time is used without waste as time for performing the alignment by controlling the table. At the end of the examination, the observer
By operating a reset button (not shown), the inspection table 200 returns to the state of FIG.
Will be discharged. In this horizontal state, the observer can replace the LCD on the pallet 206, and workability is good in this state. It does not slip off the LCD from the pallet 206.

Further, a color camera 400 may be provided for automating the inspection confirmation, and the inspection may be performed by imaging the display state of the LCD during the inspection and comparing the patterns. FIG. 4 is a flow chart showing the operation of the above-described device, and explains the operation of the control circuit unit 300.

[0018]

As described above, according to the present invention,
The inspection posture of the operator is made easy to inspect so as to prevent inspection mistakes, and even if this is done, the loading of the LCD to be inspected does not become inconvenient.

[Brief description of drawings]

FIG. 1 is a diagram showing a basic configuration of an apparatus according to the present invention.

FIG. 2 is an external view showing a first operating state of the device of the present invention.

FIG. 3 is an external view showing a second operation state of the device of the present invention.

FIG. 4 is a flowchart shown to explain the operation of the device of the present invention.

[Explanation of symbols]

 100 ... Housing 200 ... Inspection table 201 ... Rotation axis 202 ... Frame 203 ... X, Y, θ table 204 ... Z table 205 ... Pallet slide plate 206 ... Pallet 207 ... Backlight 208 ... Positioning camera 209 ... Probe unit 300 ... Control circuit section.

Claims (3)

[Claims] 1. An inspection object can be placed on the upper surface of an inspection table having at least an XY table, and a rotating portion having a rotation axis in the lateral direction is provided on the front side of the inspection table, and this rotating operation is performed. A first posture in which the entire XY table is rotated around a portion and the object to be inspected is obliquely lifted, and a second posture is in a horizontal state due to rotation of the rotating portion. An inspection apparatus for a liquid crystal display device, characterized in that 2. A case having an upper surface opening, arranged so as to close the upper surface opening of the housing, and having a rotating portion on one side of the opening, and attached to the housing.
An inspection table having at least an XY table, a pallet for arranging an object to be inspected on the upper surface of the inspection table, and a rotational drive of the inspection table around the rotating portion so that the object to be inspected is An apparatus for inspecting a liquid crystal display device, comprising: a first posture in which the liquid crystal display device is obliquely lifted and a second posture in which the posture is horizontal. 3. The inspection apparatus for a liquid crystal display device according to claim 2, wherein a video camera for monitoring the position of the pallet is provided on the upper surface side of the inspection table.