JPH0619404B2 - Liquid crystal electrode substrate energization detection device - Google Patents

Description

Detailed Description of the Invention A. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting energization of a large number of electronic circuit lines formed on a liquid crystal electrode substrate used in a liquid crystal display.

B. 2. Description of the Related Art A liquid crystal display is composed of a pair of deflecting plates sandwiching a liquid crystal cell in which liquid crystal is sealed between two electrode substrates, and a light reflecting plate is attached to the back surface of the liquid crystal display. It is controlled and applied to a display device or the like by utilizing a change in optical characteristics of liquid crystal. And
In the electrode substrate, a plurality of transparent electrodes are coated in parallel on transparent glass to form an electronic circuit line. Therefore, in the manufacturing process of the electrode substrate, a non-conducting (open) portion or a conduction (leakage) between adjacent lines occurs in the electronic circuit line, and it is necessary to check this. Moreover, in many electrode substrates, the electronic circuit lines generally have an unequal pitch between the one end and the other end.

Therefore, in the conventional device for the above-mentioned check, when conducting the power supply through both ends of the electronic circuit line through the power supply terminals, a conductive rubber body that is long in the direction orthogonal to the electronic circuit line is used as the one-side electrode terminal. It was designed to make simultaneous contact with the circuit lines.

C. SUMMARY OF THE INVENTION According to the above device, a rubber mark is left on the glass surface of the electrode substrate, or an electronic circuit that does not contact the rubber body is generated. In order to eliminate the non-contact circuit wire, it is necessary to apply a strong pressure to the rubber body from above, which causes the glass itself to be damaged.

An object of the present invention is to provide a device capable of detecting energization whether or not an electronic circuit line formed on a liquid crystal electrode substrate is conducting with a simple configuration.

D. Means for Solving the Problems The present invention includes (a) a liquid crystal electrode substrate A arranged substantially horizontally with a plurality of electronic circuit lines A1 formed in parallel facing upward.
In the energization detecting device for the liquid crystal electrode substrate for detecting the energization of each of the electronic circuit lines A1, (b) the device is arranged so as to extend in a method of intersecting the longitudinal direction of the electronic circuit lines A1 and to be parallel to the liquid crystal electrode substrate A. Rail 1
(C) Above the liquid crystal electrode substrate A, the scanning table 2 guided by the rail 1, (d) The scanning table feeding part 3, which is a nut member 3a provided on the scanning table 2, and the rail 1 It has a threaded rod 3b which extends in parallel and is screwed into the nut member 3a, and a drive source for rotationally driving the screw 3b. When the energization is detected, the scanning table 2 is fed in a predetermined feeding direction 71 along the longitudinal direction of the rail 1. A scanning platform feed unit 3, and (e) a power supply terminal 10 arranged at one end of the electronic circuit line A1 in the longitudinal direction, which extends along the longitudinal direction of the rail 1 and is formed in an elongated shape on the liquid crystal electrode substrate A. In the felt 12, 62 which is contacted with
The electrode plate 11 is embedded and configured, and the felts 12, 62
Includes a power supply terminal 10 that absorbs a conductive liquid, (f) a first piston cylinder mechanism 22 that is attached to the scanning table 2 and drives the power supply terminal 10 up and down, and (g) a meter reading and raising unit 6. An arm 6b pivotally supported on the scanning table 2 near the other end of the electronic circuit line A1 in the longitudinal direction by an axis that is perpendicular to the longitudinal direction of the rail 1 and is parallel to the liquid crystal electrode substrate A; 6h is a meter reading / raising unit 6 having a second piston cylinder mechanism 6d for rocking the scanning table 2 so as to be in a standing state and a tilted state; A fixed meter reading head main body 4a, a fixed arm 4b fixed to the meter reading head main body 4a, protruding toward the upstream side in the feeding direction 71, and inclined upward toward the upstream side, and a meter reading head below the fixed arm 4b. On the body 4a It is pivotally supported so as to be swingable, protrudes to the upstream side in the feeding direction 71, and inclines upward as it reaches the upstream side, and the swing axis is perpendicular to the longitudinal direction of the rail 1 and is aligned with the liquid crystal electrode substrate A. The parallel swing arm 4c and the fixed arm 4b are loosely fitted to each other to prevent the upper end of the upper end from coming off, penetrate the swing arm 4c and be fixed to the swing arm 4c, and have the lower end tapered. The probe 5 is inclined between the fixed arm 4b and the swing arm 4c so that the tip 5 of the probe 5 is inclined toward the upstream side in the feed direction 71 as the tip thereof reaches the swing arm 4c. A reading head 4 having a spring 7 for applying a spring force in the direction of downward displacement, and (i) the screw rod 3b is rotationally driven by a driving source, and the feeding terminal 10 is lowered by the first piston cylinder mechanism 22. Felt 12,62 The tip of the probe 5 is connected to the other end of the electronic circuit A1 by contacting the one end of the electronic circuit line A1 on the liquid crystal electrode substrate A and keeping the arm 6b in the upright state by the second piston cylinder mechanism 6d. A liquid crystal electrode substrate energization detection device comprising: a control unit; and (j) a unit for detecting electrical continuity between the power supply terminal 10 and the probe 5.

E. Operation According to the present invention, the drive source is operated by the control means to rotationally drive the screw rod 3b, thereby moving the scanning table 2 along the rail 1 in the feed direction 71, at this time, the first piston cylinder mechanism 22. Functioning to lower the feeding terminal 10 to bring the felts 12, 62 into contact with one end of the electronic circuit wire A1, and at the same time, the tip of the meter 5 is moved to the other end of the electronic circuit wire A1 by the second piston cylinder mechanism 6d. The spring force makes it possible to make contact elastically, and thus detect the conduction between the power supply terminal 10 and the meter 5 to easily open the electronic circuit line A1 and check the leak location.

F. Example Hereinafter, an embodiment of the present invention will be described based on an example shown in the drawings.

As shown in FIG. 1, the present apparatus generally includes a scanning second movable on the two rails 1 and 1 laid in parallel by the operation of the scanning platform feed 3, and the scanning platform. The meter-reading head 4 mounted via the meter-raising / lowering unit 6, the meter-reading 5 mounted on the head, the power-supplying terminal 10 mounted via the power-supplying terminal holding unit 20, and the liquid supply unit 30 connected thereto.
Have and.

The scanning table 2 is composed of a flat plate mounted on the two rails 1 and 1, and is movable on the rail 1 via the slide bearing 2a.

The scanning table feed unit 3 is composed of a nut member 3a vertically provided on the lower surface of the scanning table 2, and a ball screw rod 3b screwed to the nut member 3a and parallel to the rail 1 and rotated by a drive source (not shown).

The meter-reading head 4 is fixed to the arm of the below-mentioned meter-reading raising / lowering portion 6 so as to face rearward (leftward in FIG. 1) (the front and rear in the traveling direction of the scanning table 2 are the front and rear of the apparatus). It comprises a main body 4a, a fixed arm 4b protruding rearward from the upper part of the main body, and a swing arm 4c pivotally supported by the lower part of the main body and capable of approaching to the fixed arm. Then, the needle 4 is fixed in a state in which it is inserted through the swing arm 4c and tilted forward, and is loosely fitted to the fixed arm 4b via the fixed spring 7 and prevented from coming off by the nut 5a screwed on the upper portion. Output side conductive wire (not shown)
Is connected to serve as the other electrode terminal.

The needle raising / lowering portion 6 is provided with a first bracket 6a that is erected on and fixed to the rear upper surface of the scanning table 2, a block-shaped arm 6b in which a lower horizontal axis is pivotally supported by the first bracket, and the scanning table 2 of the scanning table 2. A second bracket 6c that is erected on the upper surface of the front side, and is attached to the second bracket, and the tip of the piston rod is attached to the arm 6
and a drive source 6d composed of an air piston cylinder mechanism connected to the upper part of b. The meter raising and lowering section 6 swings the arm 6b back and forth by the operation of its drive source 6d, and
Tilt back and forth.

Next, the power supply terminal 10 has a rectangular shape in plan view which is long in the moving direction of the scanning table 2, and the electrode plate 1 to which the input side conductive wire B is connected.
1, a liquid absorbing member 12 that wraps the electrode plate and a grip portion 13 that grips the liquid absorbing member from above, and serves as one electrode terminal.

The power supply terminal 10 has the grip portion 13 fixed to the tip of the piston rod of the air piston cylinder mechanism that is attached downward from the support column 21 that is erected on one side of the scanning table 2 to serve as the lifting source 22. , Adjustable up and down.

The meter 5 and the power supply terminal 10 are provided on the same electronic circuit at positions where they simultaneously contact each other.

A tank 31 and a flexible tube 32 are provided above the power supply terminal 10.
And a flexible tube 32 penetrates through the upper plate portion of the grip portion 13 and opens on the inner surface of the grip portion in contact with the liquid absorbing member 12. A felt is used for the liquid absorbing member 12, which does not wear and exhibits high conductivity by absorbing the conductive liquid.

In the grip portion 13 of the power supply terminal 10, the liquid absorbing member 12
If the conductive liquid distribution groove mainly in the length direction of the electrode plate 11 is provided on the inner surface contacting with, the conductivity of the liquid absorbing member can be further uniformized.

The usage of the above detection device is as follows. Electrode substrate A
Is placed between both rails so that the electronic circuit line side faces upward and the circuit line A1 is perpendicular to the rail 1 as shown in FIG.

The scanning table 2 is pulled rearward, and the elevation drive source 22 is operated to bring the power supply terminal 10 into contact with the lower surface of the substrate A so that the substrate A is lightly pressed. The tank 31 stores ethyl alcohol or water. On the other hand, the meter 5 is driven by the drive source 6d.
Is oscillated by being operated, and the tip thereof is kept at an angle such that it makes a light contact with the upper surface of the substrate A. In this state, when the ball screw rod 3b is rotated and the scanning table 2 is moved forward, the power supply terminal 10 slides on the substrate 4 across the plurality of electronic circuit lines A, and one meter reading 5 is provided. It contacts the electronic circuit line A1 addressed to it, and according to the undulations on the substrate A, the elastic force of the spring 7 slightly changes the inclination angle thereof to move and scan the circuit line A1. During scanning, the meter reading 5 and the power supply terminal 10 have an electronic circuit pitch of the electrode substrate A.
Even if the other side end portion and the one side end portion are different, the same electronic circuit is surely contacted at the same time.

Due to the movement of the scanning table 2, if there is a non-conducting (open) portion in the middle of the electronic circuit line A1, a voltage will be applied between both ends of the same circuit line (or an extremely low voltage if there is a leak portion). The change in voltage is read by a judging device (not shown), and the presence or absence of abnormality is detected.

FIG. 3 shows another embodiment in which the liquid supply unit 40 is the main tank 4
1, an auxiliary tank 41a for keeping the amount of liquid in the tank constant, a first pipe 42a having a flexible outlet, and a second pipe 42a connected to cover the lower portion of the pipe. It is provided with a divided pipe 42 and a flow rate adjusting throttle valve 43 composed of an eccentric roll for adjusting the size of the outlet of the first pipe 42a.

According to this embodiment, the supply amount of the conductive liquid to the liquid absorbing member 12 is always constant, and the conductive performance is kept constant.

In the embodiment shown in FIG. 4, the liquid constant amount discharge valve 51 is used to regulate the amount of liquid supplied to the intermediate tank 52 by compressed air to keep the liquid absorbing member in a constant liquid containing state.

In these examples, the conductive liquid was constantly replenished, but as shown in FIG. 5, the gripping portion 63 has a shape that covers the surface that contacts the substrate A and the portion other than the insertion port of the input side conductive wire. Also, a type in which the conductive liquid is preliminarily permeated into the liquid absorbing member 62 is also used.

To further describe the configuration, the liquid crystal electrode substrate A is arranged substantially horizontally with a plurality of electronic circuit lines A1 formed in parallel facing upward. The rail 1 extends in a direction crossing the longitudinal direction of the electronic circuit line A1, for example, extends vertically in this embodiment, and is arranged parallel to the liquid crystal electrode substrate A. The scanning table 2 is guided by rails 1 above the liquid crystal electrode substrate A.

When the energization is detected, the scanning table feeding unit 3 sends the scanning table 2 in a predetermined feeding direction 71 (see FIG. 1) along the longitudinal direction of the rail 1.

The power supply terminal 10 is arranged at one end in the longitudinal direction of the electronic circuit line A1. The felts 12, 62 are formed in an elongated shape extending along the longitudinal direction of the rail 1 and are in contact with the liquid crystal electrode substrate A. In this felt 12, 62, the electrode plate 1
1 is buried. The probe 5 is arranged at the other end of the electronic circuit wire A1 in the longitudinal direction, and the tip of the probe 5 can contact / separate.

In the probe raising / lowering portion 6, the arm 6b is provided near the other end portion in the longitudinal direction of the electronic circuit line A1 by the axis perpendicular to the longitudinal direction of the rail 1 and parallel to the liquid crystal electrode substrate A.
Be pivoted to.

The piston cylinder mechanism 6d includes the arm 6b and the scanning table 2
It is rocked so as to be in a standing state and a falling state above.

The main body 4a of the meter reading head 4 is fixed to an arm 6b, and the fixed arm 4b protrudes upstream in the feeding direction 71 and is inclined upward toward the upstream side. The swing arm 4c is swingably supported by the main body 4a below the fixed arm 4b, projects toward the upstream side in the feeding direction 71, and inclines upward as it reaches the upstream side. The swing axis of the swing arm 4c is perpendicular to the longitudinal direction of the rail 1 and parallel to the liquid crystal electrode substrate A. Meter reading 5
Is loosely fitted to the fixed arm 4b to prevent the upper end of the base from coming off. The probe 5 is inserted into the swing arm 4c and fixed to the swing arm 4c. The tip of the lower portion of the probe 5 has a tapered shape, and is inclined toward the upstream side in the feeding direction 71 as it reaches the tip. The spring 7 is fixed arm 4
b between the swing arm 4c and the swing arm 4c.
Then, a spring force is applied in the direction in which the tip of the meter reading 5 is displaced downward.

When the energization is detected, the control means rotationally drives the screw rod 3b by the drive source and lowers the power supply terminal 10 by the piston cylinder mechanism 22 to bring the felts 12, 62 into contact with one end of the electronic circuit wire A1. The arm 6b is kept upright by the piston cylinder mechanism 6d to bring the tip of the meter 5 into contact with the other end of the electronic circuit wire A1. In this state, conduction between the power supply terminal 10 and the meter 5 is detected to detect energization.

When a volatile liquid such as ethyl alcohol is used, it volatilizes and disappears at an early stage, so that the next step can be performed immediately after the detection work is completed.

G. EFFECTS OF THE INVENTION According to the present invention, the felt 12 and 62 of the power supply terminal 10 is in contact with one end of the electronic circuit wire A1 in the longitudinal direction by driving the driving source by the control means to rotationally drive the screw rod 3b. Thus, the meter reading 5 sequentially contacts the other end of the electronic circuit wire A1 to detect the energization.

In particular, in the present invention, since the felts 12, 62 are formed to be elongated along the longitudinal light of the rail 1, the felts 12, 62 can contact the plurality of electronic circuit lines A1, and therefore the meter reading 5 It is possible to reliably detect the energization detection between the electronic circuit line A1 and the electronic circuit line A1.

It is also possible to move the scanning table 2 by the first and second piston cylinder mechanisms 22 and 6b in a state where the power supply terminal 10 and the meter 5 do not contact the electronic circuit line A1,
The sequential inspection operations can be smoothly performed.

Further according to the invention, the second piston cylinder mechanism 6d
The arm 6b is erected by the arm 6b so that the probe 5 can be reliably separated from the electronic circuit line A1. At this time, the probe 5 is inclined so as to be on the upstream side in the feeding direction 71 as the tip thereof. Therefore, the electronic circuit line A1 can be contacted with the electronic circuit line A1 at the time of detecting the energization without damaging the electronic circuit line A1 and the electronic circuit line A1 can be detected by the meter 5 even when the arm 6b is tilted. A1 is not damaged.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a side view vertical sectional view of one electrode terminal, FIG. 3 is a front view main portion sectional view of another embodiment, and FIG. FIG. 5 is a sectional view of an essential part of a third embodiment, and FIG. 5 is a sectional view of an essential part of the third embodiment. A ... Board, A1 ... Electronic circuit wire, B ... Conductive wire, 1 ... Rail 2 ... Scan base 2a ... Slide bearing 3 ... Scan base feed part 3a ... Nut member 3b ... Ball screw rod 4 ... Meter-reading head 4a-Main body 4b-Fixed arm 4c-Rotating arm 5-Meter reading 5a-Nut 6-Meter reading tilting section 6a-First bracket 6b-Arm 6c-Second Bracket 6d ...... Drive source 7 ...... Spring 10 ...... Power supply terminal 11 ...... Electrode plate 12 ...... Liquid absorbing member 13 ...... Grip part 20 ...... Power supply terminal holding part 21 ...... Support 22 ...... Lifting drive source 30 ... … Liquid supply part 31 …… Tank 32 …… Pipes 40, 50 …… Liquid supply part

Claims (1)

[Claims] 1. A liquid crystal electrode substrate for detecting energization of each electronic circuit line A1 of a liquid crystal electrode substrate A arranged substantially horizontally with a plurality of electronic circuit lines A1 formed side by side facing upward. In the energization detection device of (1), (b) a rail 1 extending in a method of intersecting the longitudinal direction of the electronic circuit line A1 and arranged parallel to the liquid crystal electrode substrate A.
(C) Above the liquid crystal electrode substrate A, the scanning table 2 guided by the rail 1, (d) The scanning table feeding part 3, which is a nut member 3a provided on the scanning table 2, and the rail 1 It has a threaded rod 3b which extends in parallel and is screwed into the nut member 3a, and a drive source for rotationally driving the screw 3b. When the energization is detected, the scanning table 2 is fed in a predetermined feeding direction 71 along the longitudinal direction of the rail 1. A scanning platform feed unit 3, and (e) a power supply terminal 10 arranged at one end of the electronic circuit line A1 in the longitudinal direction, which extends along the longitudinal direction of the rail 1 and is formed in an elongated shape on the liquid crystal electrode substrate A. In the felt 12, 62 which is contacted with
The electrode plate 11 is embedded and configured, and the felts 12, 62
Includes a power supply terminal 10 that absorbs a conductive liquid, (f) a first piston cylinder mechanism 22 that is attached to the scanning table 2 and drives the power supply terminal 10 up and down, and (g) a meter reading and raising unit 6. An arm 6b pivotally supported on the scanning table 2 near the other end of the electronic circuit line A1 in the longitudinal direction by an axis that is perpendicular to the longitudinal direction of the rail 1 and is parallel to the liquid crystal electrode substrate A; The meter reading / raising portion 6 having a second piston cylinder mechanism 6d for swinging the 6b so as to be in a standing state and a tilted state on the scanning table 2, and (h) a meter reading head 4, which is an arm 6b. The main body 4a of the metering head fixed to the main body 4a, the fixed arm 4b fixed to the main body 4a of the metering head, projecting upstream in the feeding direction 71, and inclined upward as it reaches the upstream side; Head body 4a Is swingably supported on the liquid crystal electrode substrate A. The swing axis is perpendicular to the longitudinal direction of the rail 1 and protrudes toward the upstream side in the feeding direction 71 and inclines upward toward the upstream side. The swing arm 4c parallel to the fixed arm 4b is loosely fitted to the fixed arm 4b to prevent the upper end of the upper end from slipping off, the swing arm 4c is inserted and fixed to the swing arm 4c, and the lower end is tapered. The probe 5 is inclined between the fixed arm 4b and the swing arm 4c so as to be positioned upstream in the feed direction 71 as the tip thereof reaches the swing arm 4c. A meter reading head 4 having a spring 7 for applying a spring force in a direction in which the tip is displaced downward, and (i) the screw rod 3b is rotationally driven by a drive source, and the power supply terminal 10 is lowered by the first piston cylinder mechanism 22. Felt 12,62 To contact the one end of the electronic circuit line A1 on the liquid crystal electrode substrate A, and keep the arm 6b in the upright state by the second piston cylinder mechanism 6d so that the tip of the probe 5 is connected to the other end of the electronic circuit line A1. An energization detecting device for a liquid crystal electrode substrate, comprising: a connecting means for connecting; and (j) means for detecting conduction between the power supply terminal 10 and the meter 5.