JP2008296146A - Washing equipment of connection lead terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide washing equipment of a connection lead terminal which does not adhere an adhesive overflowing an optical film to a block plate to block the gap between a display part and a terminal part and blocks the gap between a display part and a terminal part including the bottom face and side face of a display panel surely in washing a connection lead terminal by spraying hot steam to the terminal part in a state that an optical film is pasted on the display part of the display panel. <P>SOLUTION: The washing equipment of the connection lead terminal is characterized by including a panel mounting table 10 to mount the display panel 10, an upper part blocking means 200 to block the substrate edge 11a side of the first substrate 11 of the display panel 10, a piece of right and left side part blocking means which has been brought into contact with both light and left sides of the display panel 10 and a lower part blocking means 400 arranged on the panel mounting table 100 wherein the blocking means 200 is provided with a main blocking plate 210 consisting of a rubber material having a taper face 211 which has been brought into a gastight contact with the substrate edge 11a of the first substrate 11 in a predetermined angle without touching the edge of the optical film 14a of the first substrate 11 side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cleaning apparatus for cleaning by spraying high-temperature water vapor onto connection lead terminals formed on terminal portions of a display panel.

  A display panel such as a liquid crystal display panel or an organic EL panel is provided with a terminal portion in which connection lead terminals connected to display electrodes in the panel surface are formed, and an external control substrate such as a flexible substrate is provided on the terminal portion. Depending on the model, an IC chip component for display driving is mounted.

  Until the external control board is connected to the terminal portion, the display panel is passed through each process such as a polarizing film sticking process and a lighting inspection process, and foreign matter may adhere to the connection lead terminal during that time. As foreign substances, there are human body secretions such as sweat, saliva, and skin in addition to liquid crystal residues, oils and fats, fine dust and textiles.

  These foreign substances cause corrosion of the connection lead terminals and poor connection, and therefore need to be removed by washing before connecting the external control board. Usually, since the cleaning process is prepared after the lighting inspection process, the cleaning is performed in a state where the polarizing film is attached to the display unit.

  The cleaning methods are roughly classified into wet cleaning and dry cleaning. Among these, a cleaning solution is used in wet cleaning, but since the polarizing film as one of optical films is attached to the display panel, it cannot be immersed and cleaned.

  Therefore, in wet cleaning, the connection lead terminal of the terminal portion is wiped with a cloth or cotton swab soaked with an organic solvent, but there is a risk of damaging the electrode because it is an operation of rubbing the electrode. In addition, wipe the liquid crystal residue and sweat and saliva that have been especially dried with human secretions with a cloth or cotton swab soaked in organic solvents. There is a problem that it cannot be sufficiently removed by itself.

  Dry cleaning is usually performed by irradiating with ultraviolet rays or plasma. According to this, since it is non-contact, the above-mentioned liquid crystal residue and human secretions can be removed relatively easily without damaging the electrodes.

  However, as far as UV cleaning is concerned, particularly when removing the liquid crystal residue that has entered the gap on the cut-out end face side of the terminal part, a part of the UV light radiated to that part goes around the display part side, whereby the polarizing film There is a problem that the color changes (changes).

  As for plasma cleaning, there is a problem that when plasma is applied to the electrode surface of the connection lead terminal, the metal oxide film functioning as a stable protective film is also removed, and the corrosion is increased. Furthermore, regardless of the ultraviolet or plasma dry cleaning method, the equipment is expensive.

  Therefore, Patent Document 1 proposes that the connection lead terminal is cleaned by spraying high-temperature water vapor on the terminal portion in a state where an optical film (for example, a polarizing film) is adhered to the display portion of the display panel. Has been.

  That is, in the invention described in Patent Document 1, the display panel is placed on the panel mounting base such that the terminal portion protrudes laterally, and water vapor is shielded between the display portion and the terminal portion of the display panel. The shielding lead plate is arranged, and the connection lead terminal is cleaned by spraying steam at a temperature higher than that of the nozzle onto the terminal portion.

  According to this, foreign substances (dirt) such as human secretions are easily separated from the connection lead terminal, and depending on the object, it is in a floating state. Therefore, the connection lead terminal is simply wiped with a fibrous wiper member containing an organic solvent, for example. Thus, foreign substances including human secretions can be wiped clean without damaging the electrode surface of the connection lead terminal or destroying the metal oxide film.

  In addition, since a shielding plate that shields water vapor is disposed between the display portion and the terminal portion of the display panel, and the optical film is not directly exposed to high temperature water vapor, discoloration of the optical film due to high temperature water vapor ( Can be prevented, and scars caused by water droplets are hardly observed.

JP 2006-205108 A

  However, in order to ensure the shielding of water vapor, since the sealing member showing rubber elasticity is provided at the portion of the shielding plate that contacts the display panel, the following problems may occur.

  That is, for example, a polarizing film as an optical film is attached to the display unit of the display panel, but an adhesive for the attachment may protrude.

  In this state, when the shielding plate is brought into contact with the edge of the display panel on the display unit side, the sticking adhesive material adheres to the sealing member, and the adhesive material adheres to the display panel to be cleaned next. In the cleaning process, the display panel may be soiled.

  In addition, since water vapor floats in the air, in a configuration in which a shielding plate is simply disposed between the display portion and the terminal portion of the display panel, the water vapor blown from the nozzle to the terminal portion is caused by the polarizing film from the side of the display panel. Since it may wrap around the attached display unit side, it cannot be said that the shielding of water vapor is complete.

  Therefore, an object of the present invention is to provide a display device for cleaning the connection lead terminal by spraying high-temperature water vapor on the terminal portion with an optical film (for example, a polarizing film) attached to the display portion of the display panel. Prevent the adhesive protruding from the optical film from adhering to the shielding plate that shields between the display unit and the terminal unit, and more securely between the display unit and the terminal unit, including the bottom and sides of the display panel. It is to shield.

  In order to solve the above problems, the present invention includes a first substrate and a second substrate joined together by a peripheral sealing material with an electro-optic display material interposed therebetween, as described in claim 1. Optical films are attached to both sides of the display part of the display panel with respect to the connection lead terminals formed in the terminal part of the display panel in which the terminal part for connecting the external substrate is connected to the two substrates side. In the connecting lead terminal cleaning apparatus for cleaning by spraying high-temperature water vapor in a state where the display panel is placed, the display unit side of the display panel is placed so that the terminal unit protrudes sideways with the first substrate up. A panel mounting table; upper shielding means for shielding a substrate edge side facing the terminal portion of the first substrate; and the terminal portion and the display portion in contact with the left and right side surfaces of the display panel. A pair of left and right sides that shield the gap Shielding means, and lower shielding means arranged on the panel mounting table and shielding between the terminal portion and the display portion on the second substrate side, and the upper shielding means includes the first shielding side on the first substrate side. A main shielding plate made of a rubber material having a tapered surface that comes into airtight contact with the substrate edge of the first substrate at a predetermined angle without contacting the edge of the optical film is provided.

  According to a preferred aspect of the present invention, as described in claim 2, the upper shielding means includes a sub shielding plate made of a hard material hermetically contacting the upper surface of the edge of the optical film. .

  In addition, as described in claim 3, the lower surface of the auxiliary shielding plate is not in contact with the side surface of the edge of the optical film, and the upper surface of the edge of the optical film is not in contact with the side surface of the edge of the optical film. A seal plate made of closed-cell hard rubber is attached to ensure airtightness.

  According to a fourth aspect of the present invention, the side shielding means is pressed against the side surface of the display panel by a predetermined driving means and is easily deformed by the pressing force and is made of a low hardness rubber shielding block body. Is preferably provided.

  More preferably, the contact surface of the shielding block body with respect to the side surface of the display panel is such that the upper side contacts the side surface of the display panel before the lower side. Are formed as reverse tapered surfaces inclined at a predetermined angle.

  According to a sixth aspect of the present invention, the lower shielding means includes a belt-shaped rubber shielding packing disposed on the panel mounting table so as not to contact the edge of the optical film on the second substrate side. It is preferable to provide.

  More preferably, in the rubber shielding packing as the lower shielding means, a slit hole extending in the width direction of the display panel and connected to a negative pressure source is provided. Is formed.

  According to the present invention, the main shielding plate of the upper shielding means is formed with a tapered surface that hermetically contacts the substrate edge of the first substrate at a predetermined angle without contacting the edge of the optical film on the first substrate side. By doing so, the adhesive protruding from the optical film does not adhere to the upper shielding means.

  By providing a sub shielding plate made of a hard material hermetically contacting the upper surface of the edge of the optical film on the back side of the main shielding plate of the upper shielding means, cleaning water vapor is on the back side of the main shielding plate Even if it wraps around, the water vapor can be removed by negative pressure suction, so that water droplets do not adhere to the optical film on the first substrate side.

  A sub-shielding plate and an optical film are provided on the lower surface of the sub-shielding plate by attaching a seal plate made of closed cell hard rubber that contacts only the upper surface of the edge of the optical film on the first substrate side and does not contact the side surface thereof. It is possible to further improve the airtightness between the upper surface of the edge of the two.

  By using a shielding block body made of low hardness rubber that is pressed against the side surface of the display panel by a predetermined driving means and is easily deformed by the pressing force, the side surface of the display panel is reliably shielded. can do.

  By making the contact surface of the shielding block body with the side surface of the display panel a reverse tapered surface inclined at a predetermined angle so that the upper side comes into contact with the side surface of the display panel before the lower side, Along with pressing against the side surface of the display panel, stress for pressing the display panel against the panel mounting table can be generated.

  The lower shielding means is a belt-shaped rubber shielding packing, and the rubber shielding packing is disposed on the panel mounting table so as not to contact the edge of the optical film on the second substrate side, so that the adhesive can be adhered to the lower shielding means. Can be prevented.

  By providing a slit hole extending in the width direction of the display panel and connected to the negative pressure source in the belt-shaped rubber shielding packing applied to the lower shielding means, water droplets on the optical film on the second substrate side Adhesion can be prevented.

  Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view showing an embodiment of a connecting lead terminal cleaning device according to the present invention, FIG. 2 is a longitudinal sectional view of a main part showing a cleaning state, and FIG. 3 shows side shielding means for shielding the side of a display panel. Sectional drawing and FIG. 4 are front views of FIG.

  With reference to FIG. 1, FIG. 2, the display panel 10 which is a to-be-cleaned object is demonstrated first. In this embodiment, the display panel 10 includes a first substrate 11 and a second substrate 12 each having a display electrode formed on an inner surface thereof, bonded together via a peripheral sealing material (not shown), and a liquid crystal substance is contained in the inter-substrate cell. It is an encapsulated liquid crystal display panel.

  In this example, a terminal portion 12a is continuously provided on the second substrate 12 side, and a connection lead terminal 13 is formed on the terminal portion 12a to be connected to the display electrodes of the substrates 11 and 12 through a predetermined lead wiring. Has been.

  An external control board such as a flexible board (not shown) is connected to the terminal portion 12a. An anisotropic conductive film is usually used for the connection. In a COG (Chip On Glass) model, an IC chip for display driving (not shown) is mounted on the terminal portion 12a.

  Since the connection lead terminal 13 is usually cleaned after the lighting inspection, optical films, in this case, polarizing films 14 a and 14 b are attached to the display portions of the first substrate 11 and the second substrate 12. A protective film 15 is attached to each of the polarizing films 14a and 14b. In addition, when it is not necessary to distinguish each polarizing film 14a and 14b in particular, 14 is used for the reference symbol.

  In addition, the outer dimensions of the polarizing films 14 a and 14 b are smaller than the outer dimensions of the first substrate 11, and the attaching positions of the polarizing films 14 a and 14 b are on the inner side of the substrate edge 11 a of the first substrate 11.

  The connection lead terminal 13 is cleaned by placing the display panel 10 on the panel mounting table 100 so that the terminal portion 12a protrudes laterally with the first substrate 11 side up, as shown in FIG. 20 is performed by spraying high temperature water vapor (hereinafter sometimes referred to as “water vapor for cleaning”) onto the terminal portion 12a. Although not shown, the panel mounting table 100 is provided with a negative pressure suction hole for fixing the display panel 10.

  At that time, in order to prevent the polarizing film 14 from being exposed to high-temperature water vapor, the cleaning device of the present invention includes an upper shielding means 200, a pair of left and right side shielding means 300, and a lower shielding means 400.

  As shown in FIG. 2, the upper shielding means 200 includes a main shielding plate 210 and a sub shielding plate 220 attached integrally to the back side of the main shielding plate 210. The upper shielding unit 200 is driven to be movable up and down with respect to the panel mounting table by a lifting unit such as an air cylinder (not shown).

  The main shielding plate 210 is preferably made of fluororubber having a hardness of about 60 to 90, and has a tapered surface 211 that is hermetically abutted at a predetermined angle with the substrate edge 11a facing the terminal portion 12a of the first substrate 11 at its lower end. Is formed.

  The inclination angle of the tapered surface 211 is such that the lower end of the main shielding plate 210 does not contact the edge of the polarizing film 14a on the first substrate 11 side so that the adhesive protruding from the polarizing film 14a does not adhere. The angle is selected.

  A metal plate such as stainless steel is used for the sub shielding plate 220. The sub shielding plate 220 is integrally attached to the back side of the main shielding plate 210 so as to contact the upper surface of the edge of the polarizing film 14a.

  A sealing plate made of closed-cell hard rubber for ensuring airtightness between the lower surface of the auxiliary shielding plate 220 and the upper surface of the edge of the polarizing film 14a without contacting the side surface of the edge of the polarizing film 14a. 230 is preferably provided.

  When the connection lead terminal is cleaned by the cleaning apparatus of the present invention, the tapered surface 211 of the main shielding plate 210 of the upper shielding means 200 is brought into contact with the substrate edge 11a and the sealing plate 230 of the sub shielding plate 220 is attached. It is made to contact | abut to the edge of the polarizing film 14a. The sub-shielding plate 220 may protrude from and contact with the end edge of the polarizing film 14a.

  Although the substrate edge 11 a of the first substrate 11 is sealed by the tapered surface 211 of the main shielding plate 210, the cleaning water vapor may still wrap around the back side of the first substrate 11. In order to prevent this, as shown in FIG. 2, a negative pressure groove 240 connected to a negative pressure source (not shown) is provided between the main shielding plate 210 and the sub shielding plate 220.

  As shown in FIG. 1, the upper shielding means 200 has a width larger than the width of the display panel 10 so as to cover the side shielding means 300, but the negative pressure groove 240 is at least the display panel 10. It is preferable that it is formed over a length range corresponding to the width.

  Referring to FIGS. 1 and 3, the side shielding means 300 includes a rubber shielding block 310 that is pressed against the side surface 10s of the display panel 10 by a side clamp (driving means) 320 such as an air cylinder, for example. A pair of right and left is arranged on both sides of the display panel 10 as the same configuration.

  The shielding block 310 is preferably made of a low hardness rubber (for example, ethylene propylene rubber) having a hardness of about 5 to 30. In consideration of durability, rubber having a hardness of 10 to 15 is used. According to this, as shown in FIG. 3B, when pressed by the side clamp 320, it is deformed and closely adhered to the side surface 10s of the display panel 10, so that high airtightness is obtained.

  3A, the contact surface 311 of the shielding block 310 with respect to the side surface 10s of the display panel 10 is in contact with the side surface 10s of the display panel 10 on the upper 311a side before the lower side 311b side. Thus, it is preferably formed as a reverse tapered surface inclined at a predetermined angle.

  According to this, the stress which presses the display panel 10 to the panel mounting base 100 can be generated in connection with pressing the shielding block body 310 against the side surface 10s of the display panel 10 as shown in FIG.

  As shown in FIGS. 1 and 2, the lower shielding means 400 is preferably a belt-shaped rubber shielding packing made of a low hardness rubber (for example, ethylene propylene rubber) having a hardness of about 5 to 30, similar to the shielding block 310. 410 is used.

  The rubber shielding packing 410 has a length substantially the same as the panel width of the display panel 10 and is disposed on the panel mounting table 100 so as not to contact the edge of the polarizing film 14b on the second substrate 12 side. It is preferable.

  Further, a slit hole 411 extending along the width direction of the display panel 10 is formed in the rubber shielding packing 410, and a negative pressure exhaust hole connected to a negative pressure source (not shown) on the panel mounting table 100 side and communicating with the slit hole 411. By forming 110, it is possible to reliably prevent the cleaning water vapor from entering from the lower shielding means 400 side.

  According to the present invention, as shown in FIG. 4, the periphery of the terminal portion 12a of the display panel 10 is shielded by the upper shielding means 200, the pair of left and right side shielding means 300, and the lower shielding means 400. An example of the shielding procedure will be described.

  First, the display unit on which the polarizing film 14 of the display panel 10 is attached is placed on the panel mounting table 100 with the first substrate 11 side up, and negative pressure is generated in a negative pressure suction hole (not shown). The display panel 10 is fixed. Accordingly, the rubber shielding packing 410 of the lower shielding means 400 shields the back surface of the terminal portion 12a and the display portion of the second substrate 12 from each other.

  Next, the side clamp 320 is moved, and the shielding block body 310 of the side shielding means 300 is pressed against both side surfaces 10 s of the display panel 10 as shown in FIG.

  Thereafter, the upper shielding means 200 is lowered, and the tapered surface 211 formed at the lower end of the main shielding plate 210 is brought into contact with the substrate edge 11a of the first substrate 11 and the edge of the shielding block body 310 of the side shielding means 300. In addition, the sealing plate 230 attached to the lower end of the sub shielding plate 220 is brought into contact with the upper surface of the edge of the polarizing film 14 a and the upper surface of the shielding block body 310 of the side shielding means 300.

  Then, the negative pressure groove 240 of the upper shielding means 200 and the slit hole 411 formed in the rubber shielding packing 410 of the lower shielding means 400 are connected to a negative pressure source (not shown), and the negative pressure groove 240 and the slit hole 411 are inside. The connection lead terminal 13 is cleaned by spraying cleaning water vapor from the nozzle 20 onto the terminal portion 12a.

  Further, the upper shielding means 200 may connect the negative pressure groove 240 to a positive pressure source (not shown). In this case, once the inside of the negative pressure groove 240 is set to the positive pressure state, the negative pressure state or the gas is allowed to flow, thereby more reliably removing the invading cleaning water vapor.

  At that time, the cleaning water vapor entering the upper shielding means 200 is exhausted to the outside by the negative pressure groove 240, and the cleaning water vapor entering the lower shielding means 400 is exhausted to the outside by the slit hole 411. The polarizing film 14 is not exposed to the cleaning water vapor.

  In the above embodiment, the side shield means 300 is not provided with negative pressure exhaust means. However, for example, the negative pressure exhaust holes 110 formed in the panel mounting table 100 are branched, and the branch holes are formed on the display panel 10. The cleaning water vapor entering the side shielding means 300 may be exhausted by a negative pressure by opening the side block 10s where the shielding block body 310 abuts.

The disassembled perspective view which shows embodiment of the washing | cleaning apparatus of the connection lead terminal by this invention. The principal part longitudinal cross-sectional view which shows a washing | cleaning state. Sectional drawing which shows the side part shielding means which shields the side surface of a display panel. The front view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Display panel 10s Side surface 20 Nozzle 11 1st board | substrate 11a Board | substrate edge 12 2nd board | substrate 12a Terminal part 13 Connection lead terminal 14, 14a, 14b Polarizing film 100 Panel mounting base 110 Negative pressure exhaust hole 200 Upper shielding means 210 Main shielding board 211 Taper Surface 220 Sub shield plate 230 Seal plate 240 Negative pressure groove 300 Side shield means 310 Shield block 311 Abutting surface 400 Lower shield means 410 Rubber shield packing 411 Slit hole

Claims (7)

The terminal of the display panel, which includes a first substrate and a second substrate joined together by a peripheral sealing material with an electro-optic display material interposed therebetween, and a terminal portion for connecting an external substrate is connected to the second substrate side In the connection lead terminal cleaning device for cleaning by spraying high-temperature water vapor with the optical film attached to both sides of the display unit of the display panel, with respect to the connection lead terminal formed in the part,
A panel mounting table on which the display unit side of the display panel is mounted so that the terminal unit projects sideways with the first substrate up, and a substrate edge side facing the terminal unit of the first substrate An upper shielding means for shielding, a pair of left and right side shielding means that abuts against the left and right side surfaces of the display panel and shields between the terminal portion and the display portion, and is disposed on the panel mounting table. A lower shielding means for shielding between the terminal portion and the display portion on the second substrate side,
The upper shielding means is a main shielding plate made of a rubber material having a tapered surface that hermetically contacts the substrate edge of the first substrate at a predetermined angle without contacting the edge of the optical film on the first substrate side. An apparatus for cleaning connection lead terminals, comprising:   2. The connecting lead terminal cleaning apparatus according to claim 1, wherein the upper shielding means includes a sub shielding plate made of a hard material that comes into airtight contact with the upper surface of the edge of the optical film.   The lower surface of the sub-shielding plate does not contact the side surface of the edge of the optical film, and the closed cell is hard to ensure airtightness between the sub-shielding plate and the upper surface of the edge of the optical film. 3. The connecting lead terminal cleaning device according to claim 2, further comprising a rubber seal plate.   The said side shielding means includes a shielding block body made of low-hardness rubber that is pressed against a side surface of the display panel by a predetermined driving means and is easily deformed by the pressing force. The cleaning device for a connection lead terminal according to any one of 1 to 3.   The contact surface of the shielding block body with respect to the side surface of the display panel is formed as an inversely tapered surface inclined at a predetermined angle so that the upper side contacts the side surface of the display panel before the lower side. The cleaning device for a connection lead terminal according to claim 4.   6. The lower shielding means includes a belt-like rubber shielding packing disposed on the panel mounting table so as not to contact an edge of the optical film on the second substrate side. The cleaning apparatus for a connection lead terminal according to any one of the above.   8. The rubber shielding packing as the lower shielding means is formed with a slit hole extending in the width direction of the display panel and connected to a negative pressure source. Cleaning device for connecting lead terminals.

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