JP2005227289A - Display panel testing socket and its terminal contact retention structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-convenience display panel testing socket and its terminal contact retention structure which facilitate a contact positioning between each contact terminal of a contact film and each electrode terminal of the display panel to smoothly promote from detection of defects on the display panel to repair and lighting check, a combination of each mechanism unit depending on size of the display panel or a maintenance. <P>SOLUTION: The display panel testing socket is provided with a terminal support 13 for supporting each contact terminal 8a of the contact film 8, and a thrust plate 26 for pressing each electrode terminal 2a of the display panel 2 superimposed on the above-stated each contact terminal 8a so as to freely be connected to/disconnected from the display panel 2. Further a thrust applying member 30 for applying thrust to this thrust plate 26 and keeping such thrusting conditions is installed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a terminal contact holding structure for a display panel inspection socket and a display panel inspection socket, and in particular, a disconnection of a connection in a display panel is found by microscopic observation and repaired by a laser (so-called laser repair). The present invention relates to a terminal contact holding structure for a display panel inspection socket and a display panel inspection socket.

  Conventionally, a lighting inspection is performed in order to find defects such as point defects and line defects in the display panel by energizing and lighting the electrode part of the display panel such as a liquid crystal display panel, an electroluminescence panel, and a plasma display panel. Panel inspection sockets are used.

  FIG. 34 shows an example of such a conventional display panel inspection socket 101, and the display panel inspection socket 101 has a base plate 102. On the base plate 102, a contact film 105 having a predetermined pattern of contact terminals 104 formed on the surface of a film substrate 103 made of an insulating material is attached. Then, after placing on the contact film 105 of the base plate 102 and aligning a number of electrode terminals (not shown) on the substrate of the display panel 106 with the corresponding contact terminals 104 of the contact film 105, the display panel By sandwiching 106 with a clamp member 107 having a substantially U-shaped cross section, the electrode terminals on the substrate of the display panel 106 and the corresponding contact terminals 104 of the contact film 105 are connected to each other with a required contact pressure. It is comprised so that it may contact by 1: 1.

  Thereafter, the display panel 106 is energized through the display panel inspection socket 101 in this state, and the display panel 106 is inspected for lighting. In this lighting inspection, when a defect is found in the display panel 106, the defect portion is marked with a pen or an address indicating XY coordinates is checked, and then the display panel 106 is used for display panel inspection. The display panel 106 is detached from the socket 101 and moved to the laser repair device alone, the defective part is identified by relying on the marking or address, and repaired by connecting with a spare wiring by irradiating a laser (so-called Perform laser repair). After that, in order to confirm whether or not the repair has been correctly performed, the display panel 106 is again attached to the display panel inspection socket 101 and the lighting inspection is performed.

  However, in a series of inspection operations using the conventional method 101 for manufacturing a liquid crystal display panel as described above, the display panel inspection socket 101 of the display panel 106 is subjected to each of the lighting inspection, laser repair operation, and repair confirmation lighting inspection. There was a problem that the mounting and demounting had to be repeated, and the work became extremely complicated. That is, in the conventional display panel inspection socket 101, since the thickness of the clamp member 107 in the height direction is large, the display panel 106 is moved to the laser repair device while being attached to the display panel inspection socket 101, and laser repair work is performed. Could not do.

  Further, since the conventional display panel inspection socket 101 has a thickness on the back side that is considerably thicker than that on the front side with respect to the holding surface of the display panel 106, a lighting inspection is performed while the display panel 106 is viewed from the back side. In this case, when the inspection is performed from the front side, the observation microscope can be brought close to the panel surface, but in that state, the outer frame of the display panel inspection socket 101 is obstructed. There was a problem that the microscope could not be brought close to the panel surface, and the microscope had to be greatly adjusted again.

  The present invention has been made in view of such problems, and from the discovery of defects in the display panel to repair and re-checking of lighting can be performed smoothly without removing the display panel from the socket. In addition to achieving significant improvements, each unit is configured as a unit, so that the unit can be combined according to the size of the display panel, or the terminal contact holding of the display panel inspection socket is highly convenient for easy maintenance. It is an object of the present invention to provide a structure and a socket for inspecting a display panel.

  In order to achieve the above object, the terminal contact holding structure of the display panel inspection socket according to the first aspect of the present invention is characterized in that each contact terminal of the contact film and each electrode terminal of the display panel are brought into contact with each other and pressed. A pressing force applying member that has a plate and applies a pressing force to the pressing plate and holds the pressing state is attached to the pressing plate. And by employ | adopting such a structure, while making contact position alignment of each contact terminal of the said contact film and each electrode terminal of the said display panel easy, a pressing force is reliably provided with a pressing force provision member. It is possible.

  The display panel inspection socket terminal contact holding structure according to claim 2 is characterized in that, in claim 1, an elastic support member is embedded in the main body at a position for supporting the contact terminal of the contact film. In addition, an insulating sheet is attached in the vicinity of both ends in the arrangement direction of the contact terminals. And by adopting such a configuration, the elastic support member and the insulating sheet buffer the impact and wear when the electrode terminals of the display panel are superimposed on the contact terminals of the contact film, and the It is possible to prevent the contact terminals on the contact film from being damaged. Further, since the elastic support member is elastically deformed appropriately, the electrode terminals of the display panel can be stably brought into contact with the contact terminals of the contact film.

  The display panel inspection socket terminal contact holding structure according to claim 3 is characterized in that, in claim 2, the elastic support member between the both ends of the contact terminals in the arrangement direction and the insulating sheet has slits. It is in the point formed. Further, by adopting such a configuration, the elastic support member can be easily recessed with the slit as a boundary, so that the electrode terminal of the display panel can be more stably brought into contact with the contact terminal of the contact film. Can do.

  According to a fourth aspect of the present invention, there is provided a display panel inspection socket having a thin plate-like base plate in which an opening for mounting the display panel is formed, and at least each contact terminal of the contact film on the base plate. Contact position adjusting means for adjusting the position so that the electrode terminals of the display panel are in contact with each other, and contact state holding means for maintaining the contact state between the contact terminals and the electrode terminals by the contact position adjusting means. It is in the point that it was unitized and attached. By adopting such a configuration, the contact position adjusting means and the contact state holding means are unitized and detachable from the base plate. Therefore, the units are combined in accordance with the size of the display panel to be inspected. It is possible to easily create a suitable socket, and maintenance is also easy. Further, by forming the base plate thinly, it can be easily introduced into the socket of the observation microscope and the edge of the display panel can be easily observed.

  A display panel inspection socket according to a fifth aspect of the present invention is characterized in that, in the fourth aspect, the terminal contact holding structure according to any one of claims 1 to 3 as the contact state holding means. It is in the point with. And by adopting such a configuration, it becomes easy to align the contact position between each contact terminal of the contact film and each electrode terminal of the display panel, and the size of the display panel by configuring each part as a unit. Together, each unit can be easily assembled into a socket tailored to the application. In addition, it is possible to improve convenience that facilitates maintenance.

  The display panel inspection socket according to a sixth aspect of the present invention is characterized in that, in the fourth or fifth aspect, the display panel to be mounted on the base plate is substantially at the center in the height direction of the display panel inspection socket. A leg member protruding from the lower surface of the base plate is attached so as to be disposed. Further, by adopting such a configuration, the display panel is arranged at substantially the center in the height direction of the display panel inspection socket. Therefore, even if the display panel inspection socket itself is turned over, the height of the display panel is increased. The position in the vertical direction does not change, and the focusing of the observation microscope can be easily performed.

  As described above, according to the first aspect of the present invention, the contact position of each contact terminal of the contact film and each electrode terminal of the display panel can be easily adjusted, and the pressing force can be reliably applied by the pressing force applying member. Can be granted.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, the impact of the elastic support member and the insulating sheet when the electrode terminals of the display panel are superimposed on the contact terminals of the contact film. It is possible to prevent the contact terminals on the contact film from being damaged by buffering or abrasion. Moreover, it becomes possible to make the electrode terminal of a display panel contact stably with the contact terminal of the said contact film because an elastic support member deform | transforms moderately appropriately.

  According to the invention of claim 3, in addition to the effect of the invention of claim 2, the elastic support member is easily recessed with the slit as a boundary, so that the electrode terminal of the display panel is used as the contact terminal of the contact film. Thus, the contact can be made more stably.

  According to the invention of claim 4, since the contact position adjusting means and the contact state holding means are unitized and detachable from the base plate, the units are combined in accordance with the size of the display panel. This makes it easy to create a socket with a size and structure that fits the inspection target. In addition, maintenance becomes easy. Further, by forming the base plate thinly, it can be easily introduced into the socket of the observation microscope and the edge of the display panel can be easily observed.

  Moreover, according to the invention which concerns on Claim 5, while adjusting the contact position of each contact terminal of a contact film and each electrode terminal of a display panel, each part was comprised by the unit, and it became the magnitude | size of a display panel. In addition, it is possible to easily create a socket suitable for the application by combining each unit. Also, maintenance is easy.

  According to the invention according to claim 6, in addition to the effect of the invention according to claim 4 or claim 5, the display panel is disposed substantially at the center in the height direction of the display panel inspection socket. Even if the display panel inspection socket itself is turned upside down, the position in the height direction of the display panel does not change, and the observation microscope can be easily focused.

  Hereinafter, an embodiment of a display panel inspection socket 1 of the present invention will be described with reference to the drawings.

  A display panel inspection socket 1 shown in FIG. 1 is a display panel inspection socket 1 for inspecting a liquid crystal display panel 2, and the liquid crystal display panel 2 has electrode terminals 2a only on one side (see FIG. 9). Has a formed structure.

  As shown in FIGS. 1 and 2, the display panel inspection socket 1 of the present embodiment includes a rectangular frame-shaped base plate 4 in which a substantially rectangular opening 3 for mounting the display panel is formed at the center. Each unitized mechanism is arranged on the base plate 4. The base plate 4 is formed with a notch 5 that is wider than the outer diameter of an objective lens portion (lens barrel portion) of an inspection microscope or defect repair microscope (not shown). A sub-plate 6 is attached to the notch 5, and the workpiece conveying apparatus according to the present embodiment, when turned over, uses the sub-plate 6 from the objective lens portion of the microscope. By introducing the (lens barrel) into the display panel inspection socket 1, it is possible to inspect it when it is turned upside down without raising the objective lens part of the microscope from the state of being used face up. It is said that.

  Further, as shown in FIG. 1, on one side of the base plate 4, an electrode terminal 2a (see FIG. 9) of the liquid crystal display panel 2 and a contact terminal 8a (see FIGS. 5 and 9) of the contact film 8 are provided. A contact unit 9 for connection is attached. The contact units 9 are attached according to the number of electrode terminal portions 2b of the liquid crystal display panel 2 to be inspected, but two contact units 9 are attached to one side of the base plate 4 in this embodiment.

  3 to 17 show the structure of the contact unit 9. The contact unit 9 has a plate-like contact unit main body 12 formed with a stepped portion 10 that can be easily engaged with the edge of the base plate 4, and a terminal portion support is provided on the distal end side of the contact unit main body 12. The body 13 is fixed. A printed wiring board 14 is fixed to the upper surface of the contact unit main body 12 by a plurality of fixing screws 15. An external connection connector for connecting to an external drive circuit (not shown) is provided on the printed wiring board 14. 16 is provided, and a connector 18 for connecting the film for connecting the contact film 8 is further provided. A film connector 19 formed on the base end side of the contact film 8 is connected to the film connecting connector 18 (see FIG. 7). Since the contact film 8 is flexible, the contact terminal 8a is curved at a position near the film connector 19, and the contact terminal 8a formed on the distal end side thereof is directed toward the inner side of the base plate 4 to display a liquid crystal display. It is made to oppose the electrode terminal 2a of the panel 2. FIG. In this state, as shown in FIG. 6, the terminal portion is connected by a washer 22 and a screw 23 through an insulating sheet 20 having a thin tip side of the contact film 8, in this embodiment a sheet 20 made of a fluororesin. It is fixed on the support 13. The insulating sheet 20 interposed at this time is formed in a substantially U shape so that the contact terminal 8a of the contact film 8 is opened. The insulating sheet 20 plays a role of reducing wear on the electrode terminal 2a when the liquid crystal display panel 2 is mounted or buffering an impact of the electrode terminal 2a hitting the contact terminal 8a.

  Further, as shown in FIGS. 5 to 7, an elastic support member 24 made of silicon rubber or the like is embedded in the terminal portion support 13 in a portion that contacts the lower surface of the contact terminal 8 a of the contact film 8. . The elastic support member 24 not only prevents damage to the lower surface of the contact terminal 8a of the contact film 8, but also is recessed when the electrode terminal 2a of the liquid crystal display panel 2 is pressed against the contact terminal 8a. It is a member for making both easy to contact by doing. As shown in FIGS. 5 and 6, the elastic support member 24 is formed with slits 25 in the vicinity of both side edges in the arrangement direction of the contact terminals 8a in a direction perpendicular to the arrangement direction. The contact terminal 8a and the electrode terminal 2a may be reliably contacted by making the elastic support member 24 easier to be recessed.

  In addition, as shown in FIGS. 1, 8 to 11 and FIGS. 14 to 17, the electrode unit 2a of the liquid crystal display panel 2 is brought into contact with the contact terminal 8a of the contact film 8, as shown in FIGS. A pressing plate 26 is provided for pressing both members from above in the state. The pressing plate 26 is pivotally supported around a pressing rotation shaft 28 supported by the terminal support 13, and the free end thereof is connected to the end of the liquid crystal display panel 2. The panel contact plate 29 that comes into contact is formed of a rigid body.

  Further, the pressing plate 26 is provided with a pressing hook member 30 provided on the pressing plate 26 as a pair of pressing force applying members for rotating the pressing plate 26 and applying a pressing force. It is attached so as to be rotatable about the moving shaft 32. As shown in FIG. 1, a flat lever plate 33 sized to cover the contact film 8 is fixed to the upper surface of the pressing hook member 30 by a fixing screw 34 as shown in FIG. However, by operating the lever plate 33, the pressing hook member 30 is operated. As shown in FIGS. 9, 13, and 14 to 17, a substantially hook-like pressing cam 35 is formed on the proximal end side of the pressing hook member 30, and this pressing cam A pressing elastic shaft 36 as a pressing guide member that engages with 35 is attached to the terminal portion support 13. Accordingly, when the pressing cam 35 is completely engaged with the pressing elastic shaft 36, an appropriate pressing force is applied to the pressing plate 26. Further, as shown in FIGS. 9 and 13 to 17, a fixing fitting groove 38 is formed on the end surface on the free end side of the pressing hook member 30, and the terminal portion support body 13 is provided with the fixing fitting groove 38. The shaft-like latch spring 39 as a fixing fitting member is supported, and the pressing hook member 30 is in a position where the pressing cam 35 is completely engaged with the pressing elastic shaft 36. Sometimes, the latch spring 39 is fitted into the fixing fitting groove 38. Accordingly, the pressing hook member 30 can be fixed in a state where a pressing force is applied to the pressing plate 26, and the lever plate 33 is released by its own weight even when the display panel inspection socket 1 is turned upside down. Can be prevented. Further, as shown in FIGS. 8, 12, and 13, a rotation restricting projection 40 for restricting the rotation of the pressing plate 26 in the opening direction is formed at the tip of the pressing cam 35. The pressing plate 26 is locked to the rotation restricting protrusion 40 so as not to rotate more than necessary.

  Here, the pressing operation by the pressing plate 26 of the contact unit 9 will be described with reference to FIGS.

  FIG. 14 shows a state in which the pressing by the pressing plate 26 is released. For example, when the liquid crystal display panel 2 is attached to or detached from the display panel inspection socket 1 or between the electrode terminals 2 a of the liquid crystal display panel 2 and the contact film 8. This is an operation taken during alignment with the contact terminal 8a. As shown in FIG. 14, the pressing plate 26 is pulled upward and obliquely upward by the pressing hook member 30 and rotated counterclockwise in FIG. 14 about the pressing rotation shaft 28. In the state, the contact terminal 8 a of the contact film 8 and the electrode terminal 2 a of the liquid crystal display panel 2 are retracted from the contact position. Then, as shown in FIG. 15, when the pressing of the liquid crystal display panel 2 is started, the lever plate 33 is turned to the inside of the display panel inspection socket 1 so that the pressing plate 26 is moved to the timepiece of FIG. The panel contact plate 29 of the pressing plate 26 is brought into contact with the upper surface of the liquid crystal display panel 2 (the outer surface of the glass plate) by rotating in the rotating direction. Thereafter, the pressing cam 35 is moved to the pressing elastic shaft 36 while rotating the lever plate 33 in the inverted direction (counterclockwise direction in FIG. 15) around the hook rotating shaft 32 from the inverted state. When engaged and guided, a pressing force is applied to the pressing plate 26 by the elastic force of the pressing elastic shaft 36. As shown in FIG. 16, when the pressing hook member 30 is rotated to the position where the latch spring 39 is fitted in the fixing fitting groove 38 of the pressing cam 35, the panel contact plate of the pressing plate 26 is obtained. When 29 presses the upper surface of the liquid crystal display panel 2 with an appropriate pressure, the contact terminals 8a of the contact film 8 and the electrode terminals 2a of the liquid crystal display panel 2 are surely brought into contact with each other and pressed in this state. The hook member 30 is fixed.

  On the other hand, as shown in FIG. 17, when the display panel inspection socket 1 is not used, the pressing elastic shaft 36 is in contact with the outer surface of the pressing cam 35 of the pressing hook member 30. The two are not engaged. As a result, the panel contact plate 29 of the pressing plate 26 is prevented from coming into direct contact with the contact film 8, and the risk of the contact terminals 8a being accidentally damaged is avoided.

  Further, of the two contact units 9 in the present embodiment, one contact unit 9 (the left contact unit 9 in FIG. 1) is provided with a position adjustment dial 42 for adjusting the position of the contact film 8. Yes. The position adjustment dial 42 is used to finely adjust the distance between the contact films 8 adjacent to each other when the contact film 8 is replaced to adjust the pitch of the contact terminals 8a therebetween. As shown in FIGS. 8 and 18, the position adjustment dial 42 is supported on the base plate 4 by a position adjustment bolt 43 and a position adjustment nut 44 serving as a central axis. The position adjusting bolt 43 is screwed with a position adjusting bolt holding member 45 formed with a female screw, and a position adjusting dial portion 46 is fitted to the outer peripheral surface of the position adjusting bolt holding member 45. The position adjustment dial portion 46 is formed in a multi-stage shape, and a position adjustment eccentric cam 48 is formed in the lower stage portion so as to rotate eccentrically around the position adjustment bolt 43. The position adjusting eccentric cam 48 is sandwiched between a side end portion of the terminal portion support 13 and a position adjusting leaf spring 49 supported by the terminal portion support 13. Therefore, when the position adjusting dial portion 46 is rotated so that the large diameter portion of the position adjusting eccentric cam 48 is in contact with the position adjusting plate spring 49, the contact unit 9 moves away from other adjacent contact units 9. The contact unit 9 is moved to a direction away from the contact unit 9 and is rotated so that the large-diameter portion of the position adjusting eccentric cam 48 abuts against the side surface of the terminal support 13 facing the position adjusting plate spring 49. It moves to the direction which approaches the other contact unit 9 to be positioned.

  Note that the rotation range of the position adjustment dial 42 is not necessarily 360 °, but may be 180 °. Therefore, by attaching an operation lever (not shown) to the position adjustment dial portion 46, the rotation range is 180 °. You may make it perform rotation operation easily.

  Further, as shown in FIG. 1, the base plate 4 in the display panel inspection socket 1 of the present embodiment has a panel adjustment unit for finely adjusting the position of the liquid crystal display panel 2 in the X direction (left and right direction in FIG. 1). 50 is fixed. As shown in FIGS. 1 and 19 to 22, the panel adjustment unit 50 has the same configuration as the position adjustment dial 42 described above. That is, the panel adjustment unit 50 has a base member 52 in contact with the base plate 4. A panel adjustment bolt 53 is inserted into the base member 52 from below and a panel adjustment nut 54 is fastened from above. . A panel adjustment bolt holding member 55 having a female screw is screwed into the panel adjustment bolt 53. A multi-stage panel adjustment dial portion 56 is fitted to the outer peripheral surface of the panel adjustment bolt holding member 55, and a panel adjustment eccentric cam 57 is formed at the lower portion thereof, with the panel adjustment bolt 53 as the center. It is designed to rotate eccentrically. The panel adjustment eccentric cam 57 is located between the end surface of the pushing plate 58 for abutting and pushing against the side surface of the liquid crystal display panel 2 and the panel adjusting plate spring 59 supported by the pushing plate 58. It is held between. A cover plate 60 is attached to the upper surface of the push plate 58. A long hole 62 is formed in the cover plate 60 and the base member 52 so that the fixing position can be adjusted when the cover plate 60 and the base member 52 are fixed to the base plate 4 with fixing bolts 63.

  Accordingly, when the panel adjustment unit 50 rotates the panel adjustment dial portion 56 so that the large diameter portion of the panel adjustment eccentric cam 57 contacts the panel adjustment plate spring 59, the push plate 58 is When it moves to the outside and conversely rotates so that the large diameter portion of the panel adjustment eccentric cam 57 contacts the end face of the push plate 58 facing the panel adjustment plate spring 59, it moves inward. Yes. Thus, by moving the liquid crystal display panel 2 in the X direction, the contact terminals 8a of the contact film 8 and the electrode terminals 2a of the liquid crystal display panel 2 are aligned with each other in the X direction. So that they can be contacted reliably.

  Further, as shown in FIG. 1, the position on the base plate 4 that faces the contact unit 9 and the panel adjustment unit 50 is the Y direction (up and down in FIG. 1) that contacts the side surface of the liquid crystal display panel 2. Direction) side pressure unit 64 and X direction (left and right direction in FIG. 1) side pressure unit 65 are respectively attached. As shown in FIGS. 23 to 28, these side pressure units 64 and 65 have a side pressure plate 67 slidably disposed on a side pressure substrate 66 in contact with the base plate 4. A spring holding recess 68 is formed on the lower surface in the vicinity of the rear end of the side pressure plate 67, and one end of a pair of thought springs 69 is fitted in the spring holding recess 68. The other end portions of these thought springs 69 are fitted into spring holding members 70 arranged on the rear side of the side pressure plate 67. The thought spring 69 is a spring that reverses the direction of the urging force at a certain position as a boundary, and the side pressure plate 67 is made to enter and exit by the urging force. Further, a side pressure knob 71 protrudes from the upper surface of the side pressure plate 67. By pushing the side pressure knob 71 in the lateral direction, the side pressure is resisted against the urging force of the thought spring 69. The plate 67 is slid. Further, as shown in FIGS. 24, 26 and 28, a stroke limiting projection 72 is provided on the side surface of the side pressure plate 67, and the stroke limiting projection 72 is in contact with the side surface of the stroke limiting projection 72. A stroke limiting screw 73 is screwed onto the side plate of the side pressure unit on the liquid crystal display panel 2 side. The position of the foot end portion of the stroke limiting screw 73 determines the stroke of the side pressure plate 67, that is, the amount of protrusion to the liquid crystal display panel 2 side (position when protruding). A side pressure cover plate 74 is attached to the upper surface of the side pressure unit, and a side pressure slot 75 is formed in the side pressure cover plate 74 and the side pressure substrate 66, and is fixed to the base plate 4. The position to perform can be finely adjusted.

  Further, as shown in FIG. 1, corner pressing units 76 for holding the corners of the liquid crystal display panel 2 are arranged on the inner side corners on the base plate 4 on the side facing the contact unit 9. Has been. As shown in FIGS. 29 to 32, the corner pressing unit 76 has a corner pressing body 78 fixed to the base plate 4 by a corner fixing bolt 79, and the corner pressing body 78 has a corner pressing lever 80. It is supported rotatably. The corner pressing lever 80 has an operating portion 83 and a pressing portion 84 extending from both ends of the support portion 82 in a direction perpendicular to each other. A grip 85 that is gripped by the user is attached to the end of the operation unit 83. On the other hand, the end portion of the pressing portion 84 is covered with a resin cap 86 so as not to be damaged when contacting the corner portion of the liquid crystal display panel 2. The display panel inspection socket 1 is formed with a corner support portion 88 for indicating the corner portion of the liquid crystal display panel 2 at a position facing the pressing portion 84. The corner support portion 88 is formed to the minimum necessary size so as not to block light rays applied from the back side of the liquid crystal display panel 2 so as not to hinder the detection of defects. Further, as shown in FIG. 30, a latch groove 89 is formed in the corner pressing body 78 at a position in contact with the vicinity of the end of the operation portion 83 of the corner pressing lever 80, and the corner pressing body The lever 80 is engaged. Thereby, even if the display panel inspection socket 1 of the present embodiment is turned upside down while the corner portion of the liquid crystal display panel 2 is pressed by the corner pressing unit 76, the corner pressing lever 80 is not released by its own weight. It is made like that.

  As shown in FIG. 1, leg members 90 that support the display panel inspection socket 1 of the present embodiment are attached to the outer four corners of the base plate 4. As shown in FIG. 33, the leg member 90 is fixed to the base plate 4 by leg fixing bolts 92. As shown in FIG. 33, the leg member 90 is slightly protruded downward from the base plate. This is for the liquid crystal display panel 2 to be approximately at the center position in the thickness direction of the display panel inspection socket 1 when the display panel inspection socket 1 is mounted. With such a configuration, the display panel inspection is performed. Even if the socket 1 is turned upside down, the height position of the liquid crystal display panel 2 does not change with respect to the front-facing state. As a result, fine adjustment can always be performed even when the observation microscope is focused and the inspection microscope is repeatedly face-up and face-down repeated during inspection and defect repair operations.

  As shown in FIG. 1, the display panel inspection socket 1 of the present embodiment is configured to hold the liquid crystal display panel 2 at a position relatively distant from the base plate 4. This is to facilitate observation from the vicinity of the edge of the liquid crystal display panel 2 when inspecting and observing defects or the like of the liquid crystal display panel 2. In the conventional display panel inspection socket, since there is a clamp member in the vicinity of the end side of the liquid crystal display panel 2, there is a case where the observation in the vicinity of the end side is hindered. In the present embodiment, this can be avoided.

  As described above, the panel adjustment unit 50 and the side pressure unit are arranged as the contact position adjusting means in the present embodiment, and the contact unit 9 and the corner pressing unit 76 are arranged as the contact state holding means. .

  Next, the operation of the display panel inspection socket 1 of the present embodiment described above will be described.

  When the liquid crystal display panel 2 is mounted on the display panel inspection socket 1 of the present embodiment, first, the pressing plate 26 is lifted by pulling up the lever plates 33 of the pair of left and right contact units 9 outwardly upward. Leave it open. Further, the corner pressing lever 80 of the corner pressing unit 76 is also rotated outward to release the pressing portion 84, and the X-direction side pressure unit 65 and the Y-direction side pressure unit 64 also retract the respective side pressure plates 67 to the outside. Let me. In this state, the liquid crystal display panel 2 to be inspected is placed on the contact film 8 and the corner support portion 88 such that the electrode terminal 2 a faces the contact terminal 8 a of the contact film 8. At this time, when the interval between the contact terminals 8a of the left and right contact films 8 is shifted, the interval is adjusted by the position adjustment dial 42, which is usually performed at the stage of exchanging the contact film 8. Since the distance between the contact terminals 8a is hardly shifted thereafter, it is not necessary to adjust the distance between the contact terminals 8a by the position adjustment dial 42 of the contact unit 9 one by one. Subsequently, the respective side pressure knobs 71 of the Y direction side pressure unit 64 and the X direction side pressure unit 65 are pushed inwardly, and the side pressure plate 67 is pulled out by the biasing force of the thought spring 69, and is applied to the side surface of the liquid crystal display panel 2. Make contact. This completes the alignment of the liquid crystal display panel 2 in the Y direction, but the alignment in the X direction is performed by turning the panel adjustment dial portion 56 of the panel adjustment unit 50 and rotating the panel adjustment eccentric cam 57 eccentrically. The moving plate 58 is moved and adjusted so that the electrode terminal 2a coincides with the contact terminal 8a. When the position adjustment in the Y direction and the X direction is completed in this way, the liquid crystal display panel 2 is pressed by the contact units 9. In this case, by rotating the lever plate 33 of each contact unit 9 inward, the pressing plate 26 is rotated inward to bring the panel contact plate 29 into contact with the liquid crystal display panel 2. Thereafter, as shown in FIGS. 15 to 16, the lever plate 33 is turned upside down from the state in which the lever plate 33 is inverted, and the pressing cam 35 is moved to the pressing elastic shaft 36. Engage with. Then, as shown in FIG. 16, the pressing hook member 30 is rotated to the position where the latch spring 39 is fitted in the fixing fitting groove 38 of the pressing cam 35. The plate 29 presses the electrode terminal 2a of the liquid crystal display panel 2 against the contact terminal 8a of the contact film 8 with an appropriate pressure.

  Thereafter, the corner pressing lever 80 of the corner pressing unit 76 is turned inward to press the corner portion of the liquid crystal display panel 2 by the pressing portion 84 and the corner support portion 88, and the operation portion 83 of the corner pressing lever 80. Is held in the latch groove 89 to hold the pressed state, and the mounting of the liquid crystal display panel 2 to the display panel inspection socket 1 is completed. As a result, even if the display panel inspection socket 1 of this embodiment is turned upside down, the liquid crystal display panel 2 will not come off.

  After mounting the liquid crystal display panel 2 in the display panel inspection socket 1 in this way, the liquid crystal display panel 2 is turned on by driving an external drive circuit (not shown) to inspect for panel defects. When a panel defect is found, the display panel inspection socket 1 is moved to the laser irradiation apparatus while the liquid crystal display panel 2 is mounted, and repair by laser is performed.

  Further, when a panel defect is inspected from the back side of the liquid crystal display panel 2, the inspection / repair operation is similarly performed by simply turning the display panel inspection socket 1 upside down. At this time, the observation microscope may be introduced into the display panel inspection socket 1 from the sub-plate 6 without moving up and down, and the liquid crystal display panel 2 is arranged in the thickness direction of the display panel inspection socket 1. Since the lens is held at approximately the center position, the focus of the microscope can be finely adjusted.

  Therefore, according to this embodiment, in addition to easy contact position alignment between each contact terminal 8a of the contact film 8 and each electrode terminal 2a of the display panel, it is repaired from the discovery of the defect of the display panel, and again. Since it can be performed smoothly without removing the display panel until the lighting is confirmed, workability can be greatly improved. In addition, since each unit is configured as a unit, the display panel inspection socket 1 suitable for the inspection target display panel can be easily created by combining the units according to the size of the display panel to be inspected. In addition, maintenance is easy.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible as needed.

The top view which shows one Embodiment of the socket for a display panel test | inspection which concerns on this invention The top view which shows the base plate and subplate in the display panel test | inspection socket of this embodiment Partially omitted plan view showing a contact unit in the display panel inspection socket of the present embodiment Front view of FIG. The top view which shows the state which attached the contact film in FIG. The top view which shows the state which attached the insulating sheet in FIG. Front view of FIG. The top view which shows the state which attached the press plate and the position adjustment dial in FIG. The front view which shows the state which attached the press plate in FIG. The top view which shows the press plate of the contact unit in the display panel test | inspection socket of this embodiment. Front view of FIG. The top view which shows the hook member for a press in the display panel test | inspection socket of this embodiment Front view of FIG. The figure which shows the state at the time of the display panel attachment or detachment of the contact unit in this embodiment. The figure which shows the state before the press start of the contact unit in this embodiment. The figure which shows the state at the time of the press of the contact unit in this embodiment The figure which shows the state at the time of the storage of the contact unit in this embodiment Sectional drawing which shows the position adjustment dial of the contact unit in this embodiment The top view which shows the panel adjustment unit in this embodiment FIG. 20 is a front view of FIG. 19 and shows a state in contact with the display panel The figure which shows the state which removed the cover board in FIG. BB sectional view of FIG. The top view which shows the unit for side pressure in this embodiment The figure which shows the state which removed the side pressure cover board in FIG. Front view of FIG. Right side view of FIG. Left side view of FIG. Bottom view of FIG. The top view which shows the corner press unit in this embodiment Front view of FIG. The right side view of FIG. Left side view of FIG. CC sectional drawing of FIG. 1 which shows the leg member in this embodiment A perspective view showing a display panel inspection socket and a display panel conventionally used

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display panel inspection socket 2 Liquid crystal display panel 2a Electrode terminal 4 Base plate 5 Notch 6 Subplate 8 Contact film 8a Contact terminal 9 Contact unit 12 Contact unit main body 20 Insulating sheet 24 Elastic support member 25 Slit 26 Pressing plate 30 For pressing Hook member 35 Press cam 38 Fixing fitting groove 39 Latch spring 42 Position adjustment dial 48 Position adjustment eccentric cam 50 Panel adjustment unit 57 Panel adjustment eccentric cam 58 Pushing plate 64 Y direction side pressure unit 65 X direction side pressure unit 69 Thought spring 76 Corner pressing unit 80 Corner pressing lever 88 Corner support 89 Latch groove 90 Leg member

Claims (6)

A terminal contact holding structure in a display panel inspection socket having a main body and a contact film having a contact terminal that can be in electrical contact with an electrode terminal of the display panel, wherein each contact terminal of the contact film and the display panel And a pressing plate that presses the electrode terminals in contact with each other, and a pressing force applying member that applies pressing force to the pressing plate and maintains the pressing state is attached to the pressing plate. Terminal contact holding structure for panel inspection socket. The elastic support member is embedded at a position of the main body that supports the contact terminal of the contact film, and an insulating sheet is attached in the vicinity of both ends in the arrangement direction of the contact terminal. Terminal contact holding structure of socket for display panel inspection. 3. The display panel inspection socket terminal contact holding structure according to claim 2, wherein a slit is formed in the elastic support member between both ends of the contact terminals in the arrangement direction and the insulating sheet. In a display panel inspection socket having a contact film having a contact terminal that can be in electrical contact with an electrode terminal of the display panel, the socket has a thin plate-like base plate in which an opening for mounting the display panel is formed. Contact position adjusting means for adjusting the position so that at least each contact terminal of the contact film and each electrode terminal of the display panel are in contact with the base plate, and each contact terminal and each electrode terminal by the contact position adjusting means A display panel inspection socket characterized in that a contact state holding means for holding the contact state is attached as a unit. 5. The display panel inspection socket according to claim 4, further comprising the terminal contact holding structure according to any one of claims 1 to 3 as the contact state holding means. The leg member which protrudes from the lower surface of the said base plate is attached to the said base plate so that the display panel mounted | worn may be arrange | positioned in the center of the height direction of the socket for a display panel test | inspection. Item 6. The display panel inspection socket according to Item 5.