JP2015055631A - Inspection device of display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inspection device capable of inspecting a display panel continuously and rapidly.SOLUTION: A display panel inspection device includes: a panel installation jig 12 that has a panel installation portion on which a panel is installed; a backlight 15 that is provided to the panel installation jig for radiating light onto a lower portion of the panel; a photographing device 18 for photographing the panel installed on the panel installation jig; and a photographing device movement unit 34 that moves the photographing device. The photographing device includes: an inspection camera 20 that is disposed so that a lens portion faces the panel; an inspection camera rotation device 23 that rotates the inspection camera so that a photographing angle of the inspection camera with respect to the panel is changed; a frame 22 that supports the inspection camera rotation device; an illumination device 21 for radiating light onto an upper portion of the panel which the inspection camera photographs; and an illumination device movement unit 25 that is coupled to the frame so as to support the illumination device and moves the illumination device so that an angle of light irradiation of the illumination device is changed.

Description

  The present invention relates to a display panel inspection apparatus, and more particularly to a display panel inspection apparatus capable of quickly and accurately inspecting various display panels.

  Recently, a variety of digital devices such as smartphones, digital TVs, tablet PCs, notebook computers, PMPs, navigations, and the like have been put on the market, and the demand for display panels used for flat panel display devices and touch screens is increasing.

  Examples of the flat panel display include a liquid crystal display (LCD), a plasma display (PDP), and an organic light emitting diode (OLED). In the case of a liquid crystal display device, it is widely used in display devices of various digital devices due to features such as light weight, thinness, low power drive, full color, and high resolution.

  The liquid crystal display device is manufactured by attaching a polarizing plate and a backlight unit to a liquid crystal display panel that controls light transmittance. The plasma display device is manufactured by arranging electrodes crossing each other on two mutually opposed panels. Various flat panel display devices including such liquid crystal display devices and plasma display devices are manufactured by attaching panels having various functions such as a transparent protective plate to the flat panel display panel.

  The touch screen is an input device that is provided on the display surface of various flat panel display devices and is used to select information desired by the user while viewing the display device. The touch screen includes a resistive type, a capacitive type, an electro-magnetic type, a saw type, and an infrared type. Such a touch screen is manufactured by attaching a transparent electrode panel to a transparent window panel.

  As described above, a display panel used for a panel type display such as a flat panel display or a touch screen is manufactured by attaching a plurality of panel elements. As a method of attaching a plurality of panel elements constituting a display panel, a method of attaching two panel elements by attaching a double-sided tape around one side surface of any one panel element and attaching another panel element to the panel element. There is. Such a method of partially bonding two panel elements may cause a problem in that when a panel element is pressed, a gap between two panel elements where a double-sided tape is not disposed is broken and a defect occurs. .

  As another method, there is a method of bonding the entire matching surface between two panel elements with an adhesive film such as OCA. Such a panel element mounting method does not cause a problem that the fine gap between the two panel elements collapses when the panel element is pressed. However, since the bonding area is large, further attention is required during the mounting operation.

  There is also known a method in which a curable solvent is applied between two panel elements to be bonded, and this is cured and bonded.

  In manufacturing a display panel by attaching a plurality of panel elements by various methods as described above, bubbles may be generated between the panel elements or the foreign substances may flow in. Further, in the manufacturing process, stains and scratches can occur on the surface of the display panel. Since the lack of such a display panel leads to a defect in the final product, an inspection process must be performed during the manufacture of the display panel. As a method of inspecting the display panel, there is a method of photographing the display panel with a camera and analyzing the photographed image with a computer.

  As an example of a display panel inspection apparatus, Patent Document 1 (published on December 31, 2008) discloses an inspection apparatus that photographs the entire appearance of an LCD panel and inspects the appearance of the LCD panel for defects. Yes. The inspection apparatus disclosed in the above publication takes an appearance of the LCD panel using a high-resolution camera after the LCD panel stands upright with respect to the bottom surface.

Korean Published Patent No. 2008-0113621

  However, as described above, the conventional inspection apparatus acquires a whole image of the display panel by continuously performing partial photographing on the display panel while moving the camera using the robot unit. There is no problem in photographing a panel element arranged on the outermost panel with a camera among a plurality of panel elements constituting the panel for the panel, but between the panel elements arranged on the inner side and the panel elements arranged on the inner side There are difficulties in inspecting the adhesive surface.

  The present invention has been devised in view of such points, and an object of the present invention is to provide a display panel that irradiates light stably and accurately on the surface of the display panel and the internal inspection target site. It is an object of the present invention to provide a display panel inspection apparatus capable of accurately and precisely inspecting a display panel by photographing an inspection target portion of the panel.

  In order to achieve the above object, a display panel inspection apparatus according to the present invention includes a panel mounting jig having a panel mounting portion on which a display panel is mounted, and a lower portion of the display panel mounted on the panel mounting jig. A backlight provided on the panel mounting jig for irradiating light to the panel, a photographing device for photographing the display panel mounted on the panel mounting jig, and the photographing device partially covers the display panel And a photographing device moving unit that moves the photographing device so as to continuously photograph. The imaging apparatus includes an inspection camera arranged so that a lens portion thereof faces the display panel, and an inspection camera rotation apparatus that rotates the inspection camera so that an imaging angle of the inspection camera with respect to the display panel changes. A frame for supporting the inspection camera rotating device, an illumination device for irradiating light on the display panel taken by the inspection camera, and supporting the illumination device coupled to the frame, A lighting unit movement unit that moves the lighting device such that the angle of light irradiation of the lighting device with respect to the display panel changes.

  The display panel inspection apparatus according to the present invention may further include a drive driver electrically connected to the panel mounting jig to drive the display panel mounted on the panel mounting unit.

  The lighting device motion unit may include a lighting device rotating device that rotates the lighting device.

  The lighting device movement unit is mounted on the panel mounting jig, and a moving device of the first lighting device that moves the lighting device forward toward the photographing device or moves backward from the photographing device. And a second illuminating device moving device that lowers the display panel so as to be close to the display panel or raises the display panel so as to be far from the display panel.

  The photographing device moving unit includes a moving device of a first photographing device that moves the photographing device in a length direction of the display panel mounted on the panel mounting jig, and a width of the display panel. A moving device of the second photographing device that moves in the direction, and a lifting device of the photographing device that moves the photographing device in the vertical direction.

  The display panel inspection apparatus according to the present invention may further include a panel mounting jig / tilting device for tilting the panel mounting jig in multiple directions.

  The panel mounting jig and tilting device includes a pivot shaft that supports the panel mounting jig so that it can be tilted in multiple directions, and a first tilt that pushes and pulls the panel mounting jig so that the panel mounting jig is parallel to the bottom surface. A first tilting actuator that tilts about a tilting center line, and a first crossing with the first tilting center line while pushing and pulling the panel mounting jig so that the panel mounting jig is parallel to the bottom surface. And a second tilting actuator that tilts about the second tilting centerline.

  The panel mounting jig and tilting device includes a first support shaft that is coupled to the panel mounting jig and arranged parallel to the bottom surface, and pushes and pulls the first tilting plate to move the panel mounting jig. A first tilting actuator that tilts about the first support shaft; and a second tilting actuator that is parallel to the bottom surface of the lower part of the panel mounting jig and intersects the first support shaft. The first support shaft and the first tilting actuator are coupled to the second support shaft so that the support shaft can be tilted about the second support shaft. A tilting plate to be supported and the tilting plate are pushed and pulled to tilt the tilting plate about the second support shaft. It may include a second tilting actuator.

  The display panel inspection apparatus according to the present invention further includes a turntable on which the panel mounting jig is mounted, and the panel mounting jig is transported along a rotation path by intermittently rotating the panel mounting jig along the rotation path. Can be provided in a photographing zone prepared so that the panel mounting jig stops on the rotation path.

  The display panel inspection apparatus according to the present invention provides a protective film attached to the display panel, which is provided upstream of the imaging device in the rotation path and is mounted on the panel mounting jig, from the display panel. A desorbing device for the desorbing protective film can be further included.

  The display panel inspection apparatus according to the present invention includes a protective film mounting plate provided on the turntable so that the protective film is detached from the display panel by the protective film removing device. Further, it can be included.

  The display panel inspection apparatus according to the present invention is provided with a protective film on the upper surface of the display panel that is provided downstream of the imaging device in the rotation path and is attached to the panel mounting jig and passes through the imaging zone. A protective film attaching device may be further included.

  The protective film mounting device includes a protective film gripping mechanism that grips the protective film and transports it to the upper surface of the display panel, and a moving unit that is coupled to the protective film gripping mechanism and moves the protective film gripping mechanism. The moving unit moves the protective film gripping mechanism in a vertical direction, and moves the protective film gripping mechanism in a first direction parallel to the upper surface of the display panel mounted on the panel mounting jig. And a second moving device that moves the protective film gripping mechanism in a second direction that intersects the first direction in parallel with the upper surface of the display panel mounted on the panel mounting jig. Mobile devices.

  The protective film attachment device may further include a protective film pressing device having a pressure roller that presses and compresses the protective film transported to the upper surface of the display panel against the upper surface of the display panel.

  The protective film attachment device may further include a roller pressure device for pressing the pressure roller toward the protective film conveyed to the upper surface of the display panel.

  The protective film mounting device includes a protective film gripping mechanism having a plurality of suction ports so as to suck and transport the protective film to the upper surface of the display panel, and the protective film sucked by the protective film gripping mechanism. In order to press and squeeze the upper surface of the display panel, a pressure roller coupled to one end of the protective film gripping mechanism so as to be capable of rolling motion, and the protective film gripping mechanism are hinge-coupled, and the protective film gripping mechanism is A moving unit for moving, and the protective film holding mechanism so that the pressure roller approaches the upper surface of the display panel and presses the protective film adsorbed by the protective film holding mechanism on the upper surface of the display panel And a roller pressurizing device for tilting.

  The display panel inspection apparatus according to the present invention is provided on the upper surface of the display panel that is provided downstream of the imaging device in the rotation path, is attached to the panel mounting jig, and passes through the imaging device. A marking device for displaying a (position) mark on a protective film, and whether or not there is a defect in the display panel mounted on the panel mounting jig by receiving the photographed image from the photographing device and analyzing the photographed image And a control device for controlling the operation of the marking device, and the control device controls the marking device if there is a defect in the photographed image of the display panel photographed by the photographing device. The (defect position) mark can be displayed on the protective film attached to the upper surface of the display panel. Kill.

  The marking device includes a marker capable of displaying a (defect position) mark on the protective film, an elevating device for moving the marker vertically, and the display for mounting the marker on the panel mounting jig. A first moving device that moves in a first direction parallel to the upper surface of the panel; and a first device that crosses the first direction in parallel with the upper surface of the display panel mounted on the panel mounting jig. And a second moving device that moves in two directions.

  The display panel inspection apparatus according to the present invention further includes a cleaning device provided upstream of the imaging device in the rotation path in order to clean the upper surface of the display panel mounted on the panel mounting jig. Can do.

  The cleaning device may include an air cleaner that injects air onto an upper surface of the display panel mounted on the panel mounting jig to blow off foreign matters from the upper surface of the display panel.

  The cleaning device may include a roller cleaner having a cleaning roller that rotates and moves in contact with an upper surface of the display panel mounted on the panel mounting jig to separate foreign matter from the upper surface of the display panel.

  The display panel inspection apparatus according to the present invention is a panel transporter that transports the display panel mounted on the panel mounting jig to the outside of the panel mounting jig, provided downstream of the imaging device in the rotation path. And a control unit that receives a photographed image from the photographing apparatus and analyzes the photographed image to determine whether or not the display panel mounted on the panel mounting jig is defective and controls the operation of the panel transporting apparatus. The control device may further adjust the transport position of the display panel transported by the panel transport device based on the presence or absence of a defect in the display panel.

  The display panel inspection apparatus according to the present invention is configured such that a display panel is mounted on a panel mounting jig, light is irradiated on the lower part of the display panel with a backlight, and light is irradiated on the upper part of the display panel with a lighting apparatus. However, the inspection camera can detect not only the surface of the display panel but also the internal area of the display panel to detect various defects in the display panel.

  Further, the display panel inspection apparatus according to the present invention attaches the display panel to the panel mounting jig and supplies power to the display panel to operate the display panel while the display panel surface and internal region are being operated. By taking a picture with the inspection camera, it is possible to easily detect defects in the operation of the display panel such as a pattern defect or a color element defect of the display panel.

  Further, the display panel inspection apparatus according to the present invention can change the shooting angle of the inspection camera with respect to the display panel by rotating the inspection camera with the inspection camera rotating device, and adjusts to the shooting area of the inspection camera. Thus, the illumination device movement unit can change the illumination angle and illumination region of the illumination device in various ways. Therefore, the light emitted from the illumination device can be concentrated in various imaging regions of the inspection camera, and an optimal imaging image for the inspection site can be obtained, and the accuracy and reliability of the inspection for the display panel are obtained. Can be increased.

  Further, the display panel inspection apparatus according to the present invention loads a display panel while mounting a plurality of panel mounting jigs on which the display panel is mounted on the turntable and rotating the turntable intermittently by a certain angle. , Cleaning the display panel, taking pictures of the display panel, attaching a protective film to the display panel, displaying defective parts on the display panel, unloading the display panel, etc. The display panel can be inspected quickly and effectively, and the defective display panel can be effectively removed.

  The display panel inspection apparatus according to the present invention prepares a display panel to be inspected on a turntable by mounting a plurality of panel mounting jigs to which the display panel is mounted on a rotating turntable. The display panel can be inspected while being transferred along the rotation path. Therefore, a compact structure is possible without occupying a separate installation space.

  Further, the display panel inspection apparatus according to the present invention can automatically display the defect position and the defect availability on the display panel having defects through the marking apparatus after inspecting the display panel with the panel inspection machine. it can. Therefore, repair work for defective display panels and subsequent work such as assembly or packaging can be performed smoothly so that the operator can easily grasp the position of the display panel defects. Make it easy to analyze the defects that occur.

It is a perspective view which shows the inspection apparatus of the display panel which concerns on 1st Example of this invention. It is a front view which shows the test | inspection apparatus of the panel for a display which concerns on 1st Example of this invention. It is a figure for demonstrating the inspection method of the display panel of the inspection apparatus of the display panel which concerns on 1st Example of this invention. It is a perspective view which shows the inspection apparatus of the display panel which concerns on 2nd Example of this invention. It is a front view which shows the inspection apparatus of the display panel which concerns on the 2nd Example of this invention. It is a perspective view which shows the inspection apparatus of the display panel which concerns on the 3rd Example of this invention. It is a front view which shows the panel mounting jig and panel mounting jig tilting apparatus of the display panel test | inspection apparatus based on 3rd Example of this invention. It is a top view which shows the panel mounting jig and panel mounting jig tilting apparatus of the display panel test | inspection apparatus based on 3rd Example of this invention. It is a top view which shows the inspection apparatus of the display panel which concerns on the 4th Example of this invention. It is a figure which shows the panel mounting jig of the display panel test | inspection apparatus based on 4th Example of this invention, a cleaning apparatus, and its periphery structure. It is a perspective view which shows the panel mounting jig of the inspection apparatus of the display panel which concerns on the 4th Example of this invention, a protective film attachment apparatus, a marking apparatus, and its periphery structure. It is a figure for demonstrating the effect | action of the protective film attachment apparatus and marking apparatus of the inspection apparatus of the display panel which concern on the 4th Example of this invention. It is a figure for demonstrating the effect | action of the protective film attachment apparatus and marking apparatus of the inspection apparatus of the display panel which concern on the 4th Example of this invention. It is a figure for demonstrating the effect | action of the protective film attachment apparatus and marking apparatus of the inspection apparatus of the display panel which concern on the 4th Example of this invention.

  Hereinafter, a display panel inspection apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

  In describing the present invention, the size and shape of the components illustrated in the drawings may appear exaggerated or simplified for clarity and convenience of description. In addition, terms specifically defined in view of the configuration and operation of the present invention may vary according to the user's, operator's intention or custom. Such terms should be interpreted into meanings and concepts consistent with the technical idea of the present invention based on the contents throughout the present specification.

  FIG. 1 is a perspective view illustrating a display panel inspection apparatus according to a first embodiment of the present invention, and FIG. 2 is a front view illustrating a display panel inspection apparatus according to a first embodiment of the present invention. FIG. 3 is a diagram for explaining a display panel inspection method of the display panel inspection apparatus according to the first embodiment of the present invention.

  As shown in FIGS. 1 to 3, the display panel inspection apparatus (10) according to the first embodiment of the present invention has a panel mounting jig (12) on which a display panel (P) to be inspected is mounted. ) And the inspection camera (20) for photographing the display panel (P) mounted on the panel mounting jig (12), and the upper portion of the display panel (P) photographed by the inspection camera (20). A photographing device (18) having an illumination device (21) for moving the photographing device, a photographing device moving unit (34) for moving the photographing device (18), and a control device (46) for controlling the overall operation of the device. Including. The display panel inspection apparatus (10) according to the first embodiment of the present invention captures an image of the display panel (P) by photographing the display panel (P) with the inspection camera (20). By analyzing the control device (46), stains and scratches generated on the surface of the display panel (P) in the manufacturing process and transportation process of the display panel (P), and the flow into the display panel (P). Various defects of the display panel (P) can be detected, such as air bubbles and foreign matters, a pattern defect of the display panel (P), and a color element defect of the display panel (P).

  Here, the display panel (P) to be inspected by the display panel inspection apparatus (10) according to the present invention is a flat panel display device such as a liquid crystal panel, a touch screen, or the like, It can be a variety of display panels constituting various products. The inspection area of the display panel (P) that can be inspected by the display panel inspection device (10) is not only the surface of the display panel (P) but also the display panel (P) which is laminated in order. It is an internal region of the display panel (P) such as an adhesive layer between the panel elements constituting the panel.

  The panel mounting jig (12) can be electrically connected to the panel mounting portion (13) on which the display panel (P) is mounted and the display panel (P) mounted on the panel mounting portion (13). Connector (14). The panel mounting portion (13) has a groove shape corresponding to the shape and size of the display panel (P) so that the display panel (P) is accommodated. The panel mounting portion (13) has a display panel (P). ) Can be electrically connected to the terminal (not shown) of the display panel (P) with the connector (14).

  A backlight (15) is provided in the panel mounting portion (13) of the panel mounting jig (12). The backlight (15) is for irradiating the lower part of the display panel (P) mounted on the panel mounting portion (13). When photographing the display panel (P) mounted on the panel mounting jig (12) with the inspection camera (20), the backlight (15) is mounted on the display panel (P) mounted on the panel mounting portion (13). When light is irradiated, the inside of the display panel (P) can be photographed more clearly.

  The backlight (15) operates by receiving power from the drive driver (16). The drive driver (16) is provided inside the panel mounting jig (12), operates the backlight (15), and attaches to the display panel (P) mounted on the panel mounting jig (12) through the connector (14). The display panel (P) is driven by supplying power. If power is supplied to the display panel (P) and the display panel (P) is operated, and the display panel (P) is photographed by the inspection camera (20), the display panel (P) may be defective during operation. Can be confirmed.

  In the present invention, the specific structure of the panel mounting jig (12), for example, the number of installed panel mounting portions (13), the position and number of installed backlights (15), the number of installed connectors (14) and the number of installed. The position and the like are not limited to those shown and can be variously changed. In the case of the panel mounting portion (13), as shown, the display panel (P) can be changed to another structure other than the groove shape. The power supply structure and control method for the backlight (15) and the display panel (P) mounted on the panel mounting jig (12) can be variously changed.

  The photographing device (18) includes an inspection camera (20) having a lens unit (20a) for photographing the display panel (P) mounted on the panel mounting jig (12), and a display captured by the inspection camera (20). And an illuminating device (21) for irradiating light on the upper portion of the panel (P). The inspection camera (20) and the illumination device (21) are mounted on one frame (22) so as to be moved simultaneously by one photographing device moving unit (34). The inspection camera (20) is coupled to an inspection camera rotating device (23) provided on the frame (22), and the illumination device (21) is coupled to an illumination device motion unit (25) provided on the frame (22). .

  The inspection camera rotating device (23) can change the photographing angle of the inspection camera (20) with respect to the display panel (P) by rotating the inspection camera (20). When inspecting the display panel (P), the inspection camera (20) is not only the surface of the display panel (P) but also the inside of the display panel (P), for example, a plurality of laminated display panels (P). Each panel element that constitutes the image, or an adhesive layer between the panel elements is also photographed. Thus, when many parts of the display panel (P) are imaged by the inspection camera (20), the inspection camera (20) is rotated by the inspection camera rotating device (23) according to the imaging part of the display panel (P). Then, by changing the imaging angle of the inspection camera (20), it is possible to obtain an optimal captured image for the inspection site.

  The illuminating device (21) irradiates light onto a portion of the display panel (P) taken by the inspection camera (20) so that the inspection camera (20) acquires a clear image of the display panel (P). In general, the inspection camera 20 can acquire a partial image of the display panel P in one shooting, and acquire an entire image of the display panel P through several shootings. Become. The image acquired by the inspection camera (20) from the display panel (P) in one shooting is a linear image. Therefore, the illuminating device (21) preferably irradiates light intensively on a linear portion of the display panel (P) photographed by the inspection camera (20). For this purpose, the illuminating device (21) is provided. The lamp (21a) is preferably in the form of a linear light source. Of course, the structure of the lamp (21a), the form of emitted light, the region of light irradiation, and the like can be variously changed according to the size and form of the region that can be photographed once by the inspection camera (20).

  The illuminating device (21) is moved by the illuminating device motion unit (25), so that the portion of the display panel (P) to be photographed by the inspection camera (20) can be irradiated with light intensively. The lighting device motion unit (25) includes a rotating device (26) for rotating the lighting device (21) and a moving device (27 for the first lighting device for moving the lighting device (21) in a direction parallel to the bottom surface. ) And a moving device (28) of the second lighting device that moves the lighting device (21) in the vertical direction perpendicular to the bottom surface.

  The illumination device movement unit (25) moves and rotates the illumination device (21) up, down, left, and right so that the illumination angle of the illumination device (21) with respect to the display panel (P) and the light illumination The area will change. For example, as shown in FIG. 2, when the inspection camera (20) images the surface area of the display panel (P) mounted on the panel mounting jig (12), the lighting device motion unit (25) 21) is moved to a position where the surface of the display panel (P) can be smoothly irradiated with light. Then, as shown in FIG. 3, when the inspection camera (20) images the internal area of the display panel (P) mounted on the panel mounting jig (12), the lighting device motion unit (25) 21) is moved to a position where light can be smoothly irradiated into the display panel (P).

  The rotating device (26) of the lighting device is coupled to the first moving member (29) and moves together with the first moving member (29), and the first moving member (29) is the moving device of the first lighting device. By (27), it moves forward to the inspection camera (20) side, or retreats away from the inspection camera (20). The first moving member (29) is slidably coupled to a second moving member (30) that is slidably coupled to the frame (22). The second moving member (30) is provided with a first guide groove (31) parallel to the bottom surface, and the first moving member (29) moves linearly along the first guide groove (31). To come. When the moving device (27) of the first lighting device is operated, the moving device (29), the rotating device (26) of the lighting device coupled thereto, and the rotating device (26) of the lighting device are coupled to the first moving member (29). Both the illuminating devices (21) move forward to the inspection camera (20) side and move backward from the inspection camera (20). The moving device (27) of the first lighting device is coupled to the second moving member (30).

  The second moving member (30) is moved along the second guide groove (32) in which the frame (22) is prepared in the vertical direction by the moving device (28) of the second lighting device coupled to the frame (22). To move straight. When the second moving member (30) is moved by the moving device (28) of the second lighting device, the first moving member (29), which is sequentially coupled to the second moving member (30), The rotating device (26) and the illuminating device (21) are lowered to the panel mounting jig (12) side or raised above the panel mounting jig (12).

  In the present invention, the specific structure of the illuminator movement unit (25) for moving the illuminator (21) is not limited to that shown, and can be variously changed. For example, the rotating device (26) of the lighting device arranged between the lighting device (21) and the frame (22), the moving device (27) of the first lighting device, and the moving device (27) of the second lighting device ( 28) can be changed to be different from that shown, and the coupling structure of the lighting device (21) and the lighting device motion unit (25) can be variously changed. In addition, the specific structure of the rotating device (26) of the lighting device, the moving device (27) of the first lighting device, and the moving device (28) of the second lighting device, and the coupling structure between them are also available. Can be changed. In addition to this, the illuminating device motion unit (25) moves the illuminating device (21) up, down, left, and right and moves the illuminating device (21) to light irradiation of the illuminating device (21). The angle can be changed to other structures.

  The inspection camera (20) and the illumination device (21) are combined into one frame (22) and moved together by the photographing device moving unit (34). The photographing device moving unit (34) includes a lifting device (35) for the photographing device that moves the photographing device (18) in the vertical direction, and a display panel (P) in which the photographing device (18) is attached to the panel attachment jig (12). ) Of the first photographing device that moves in the length direction of the first photographing device, and a moving device (37) of the second photographing device that moves the photographing device (18) in the width direction of the display panel (P). Including.

  The frame (22) of the photographing device (18) is provided with a connecting member (24), and this connecting member (24) is slidably coupled to a support column (38) arranged in the vertical direction. The elevating device (35) of the photographing device is coupled to the support column (38) and pushes and pulls the connecting member (24) so that the connecting member (24) is provided on the support column (38) in the vertical direction. 39) is linearly moved along. The connection member (24) and the photographing device (18) are moved up and down by the operation of the lifting device (35) of the photographing device.

  The support column (38) is coupled to a first slider (40) provided to move in the length direction of the display panel (P) mounted on the panel mounting jig (12). The first slider (40) is provided on a second slider (41) provided to move in the width direction of the display panel (P) mounted on the panel mounting jig (12). On the second slider (41), a first guide rail (42) disposed in the length direction of the display panel (P) mounted on the panel mounting jig (12) is provided, and the first slider is provided. (40) moves linearly along the first guide rail (42) by the moving device (36) of the first photographing device. The moving device (36) of the first photographing device is coupled to the second slider (41). Due to the action of the moving device (36) of the first photographing device, the photographing device (18) moves in the length direction of the display panel (P) like the one shown in "A" of FIG. 2 together with the first slider (40). The photographing device (18) can continuously photograph a part of the display panel (P) while moving to photograph the whole part of the display panel (P).

  The second slider (41) combined with the first slider (40) is moved by the moving device (37) of the second imaging device. The second slider (41) is extended in the width direction of the display panel (P) mounted on the panel mounting jig (12) on the support (44) by the action of the moving device (37) of the second photographing apparatus. The second guide rail (43) moves linearly. The moving device (37) of the second imaging device is coupled to the support (44). The second slider (41) and the first slider (40) and the photographing device (18) coupled to the second slider (41) by the action of the moving device (37) of the second photographing device are the width of the display panel (P). Can move in the direction.

  As described above, the photographing device (18) is moved in the up / down / front / rear / left / right directions by the photographing device moving unit (34), and the display panel (P) mounted on the panel mounting jig (12) is used. ) Can be smoothly photographed. The specific structure of the photographing apparatus moving unit (34) for moving the photographing apparatus (18) is not limited to the one shown, and can be variously changed. For example, the arrangement order of the lifting device (35) of the photographing device, the moving device (36) of the first photographing device, and the moving device (37) of the second photographing device is changed to be different from that shown. In addition, the coupling structure of the photographing device (18) and the photographing device moving unit (34) can be variously changed. In addition, the specific structure of the lifting device (35) of the photographing device, the moving device (36) of the first photographing device, and the moving device (37) of the second photographing device, and the coupling structure between them are also included. It can be changed to other forms. In addition to the structure in which the photographing device moving unit (34) linearly moves the photographing device (18) in the up, down, front, rear, left, and right directions, the photographing device (18) is provided with the panel mounting jig (12). It is possible to change to another structure for moving the photographing device (18) so as to photograph the display panel (P) attached to the camera partially continuously.

  As described above, the display panel inspection apparatus (10) according to the present invention mounts the display panel (P) on the panel mounting jig (12), and the backlight (15) below the display panel (P). While irradiating light and irradiating light on the upper part of the display panel (P) with the illumination device (21), not only the surface of the display panel (P) but also the display panel (P) with the inspection camera (20). It is possible to detect various defects in the display panel (P) by photographing the internal area.

  Further, the display panel inspection apparatus (10) according to the present invention mounts the display panel (P) on the panel mounting jig (12), supplies power to the display panel (P), and supplies the display panel (P). The display panel (P) such as a pattern defect or a color element defect of the display panel (P) is obtained by photographing the surface and inner area of the display panel (P) with the inspection camera (20). It is possible to easily detect a deficiency in operation.

  Further, the display panel inspection apparatus (10) according to the present invention rotates the inspection camera (20) with the inspection camera rotating device (23) to vary the photographing angle of the inspection camera (20) with respect to the display panel (P). In accordance with the imaging region of the inspection camera (20), the illumination device movement unit (25) can change the illumination angle and illumination region of the illumination device (21) in various ways. Therefore, the light irradiated by the illumination device (21) can be concentrated in various imaging regions of the inspection camera (20) to obtain an optimal imaging image for the inspection region, and the display panel (P) is inspected. Accuracy and reliability can be increased.

  FIG. 4 is a perspective view showing a display panel inspection apparatus according to a second embodiment of the present invention, and FIG. 5 is a display panel inspection apparatus according to the second embodiment of the present invention. It is the front view which showed.

  The display panel inspection apparatus (48) according to the second embodiment of the present invention shown in FIGS. 4 and 5 includes a panel mounting jig (12) on which the display panel (P) is mounted, an inspection camera ( 20) and a photographing device (18) having a lighting device (21), a photographing device moving unit (34) for moving the photographing device (18), a control device (46) for controlling the overall operation of the device, A panel mounting jig and tilting device (49) for tilting the panel mounting jig (12) in multiple directions. Such a display panel inspection device (48) according to the second embodiment of the present invention is panel mounting jig tilting as compared with the display panel inspection device (10) according to the first embodiment described above. By further including the device (49), the remaining components other than the panel mounting jig and tilting device (49) are as described above.

  The panel mounting jig and tilting device (49) is coupled to the support (50) disposed on the bottom surface and coupled to the lower surface of the panel mounting jig (12) so that the panel mounting jig (12) can be tilted in multiple directions. A pivot shaft (51) for supporting, a first tilting actuator (55) and a second tilting actuator for pushing and pulling the panel mounting jig (12) to tilt the panel mounting jig (12) (61). One end of the pivot shaft (51) is provided with a ball (52) pivotally connected to a socket (53) provided on the lower surface of the panel mounting jig (12), and the other end of the pivot shaft (51) is provided with a column (50). ). A pivot joint (A) serving as a tilting reference point of the panel mounting jig (12) is prepared at a pivot coupling portion between the ball (52) of the pivot shaft (51) and the panel mounting jig (12).

  The tilting operation of the panel mounting jig (12) includes a first tilting actuator (55) and a second tilting actuator (61) provided on the column (50). That is, the first tilting actuator (55) tilts the panel mounting jig (12) around the first tilting center line passing through the pivot joint (A) in parallel with the bottom surface, The tilting actuator (61) tilts the panel mounting jig (12) around the second tilting center line that intersects the first tilting center line and the pivot joint (A) parallel to the bottom surface. The panel mounting jig (12) is tilted in multiple directions around the pivot joint (A) by the combination of the action of the first tilting actuator (55) and the action of the second tilting actuator (61). Can be done. In this embodiment, the first tilting center line is an imaginary line extending in the width direction of the display panel (P) mounted on the panel mounting jig (12) while passing through the pivot joint (A). The second tilting center line is an imaginary line extending in the length direction of the display panel (P) mounted on the panel mounting jig (12) while passing through the pivot joint (A).

  The first tilting actuator (55) includes an actuator body (56), an actuating rod (57) movably coupled to the actuator body (56), and a support rod (58) for supporting the actuator body (56). Including. The actuating rod (57) is pivotally coupled to a socket (59) coupled to the panel mounting jig (12), and the support rod (58) is pivotally coupled to a socket (60) coupled to a post (50). The point of action of the force that the actuating rod (57) applies to the panel mounting jig (12) is located in a portion away from the pivot joint (A). When the actuating rod (57) of the first tilting actuator (55) is advanced or retracted, the panel mounting jig (12) is watched around the first tilting center line passing through the pivot joint (A). Can be rotated in the direction or counterclockwise.

  The second tilting actuator (61) is composed of the same structure as the first tilting actuator (55), so that the actuator body (62) and the actuating rod coupled to the actuator body (62) so as to be able to advance and retract. (63) and a support rod (64) for supporting the actuator body (62). The actuating rod (63) is pivotally coupled to a socket (65) coupled to the panel mounting jig (12), and the support rod (64) is pivotally coupled to a socket (66) coupled to a post (50). The point of action of the force that the actuating rod (63) applies to the panel mounting jig (12) is located in a portion away from the pivot joint (A). When the actuating rod (63) of the second tilting actuator (61) moves forward or backward, the panel mounting jig (12) moves around the second tilting center line passing through the pivot joint (A). Can be rotated in the direction or counterclockwise.

  In this embodiment, the panel mounting jig (12) can be coupled to the support column (50) by other coupling structures that are tilted in multiple directions besides the above-described ball joint coupling structure. The first tilting actuator (55) and the second tilting actuator (61) can be changed to other structures for pushing and pulling the panel mounting jig (12) in addition to the structure shown in the figure. The number and arrangement of tilting actuators can be changed in various ways. The first tilting actuator (55) and the second tilting actuator (61) have a structure in which the first tilting actuator (55) and the support column (50) are combined, and the second tilting actuator Connecting structure of the actuator (61) and the column (50), connecting structure of the first tilting actuator (55) and the panel mounting jig (12), second tilting actuator (61) and the panel mounting jig The coupling structure with (12) can be variously changed. The first tilting center line and the second tilting center line are not limited to those arranged in the width direction or the length direction of the display panel (P) mounted on the panel mounting jig (12). , Various virtual lines intersecting each other at the pivot joint (A) can be obtained.

  As described above, in the display panel inspection apparatus (48) according to the second embodiment of the present invention, the panel mounting jig (12) on which the display panel (P) is mounted is mounted on the panel mounting jig / tilting apparatus (49). ) Can be tilted in multiple directions. Accordingly, the panel mounting jig (12) is tilted in multiple directions by the panel mounting jig and tilting device (49), so that the display panel (P) mounted on the panel mounting jig (12) is attached to the inspection camera (20). ) Can be matched to the attitude to obtain the optimal clear image. That is, the panel mounting jig and tilting device (49) of the display panel inspection device (48) according to the second embodiment of the present invention determines the orientation of the display panel (P) and the imaging surface of the inspection camera (20). Can be adjusted in parallel.

  The operation of the panel mounting jig and tilting device (49) can be controlled in various ways, for example, detecting the orientation of the display panel (P) mounted on the panel mounting jig (12). A posture detecting device is provided, and the posture of the display panel (P) is detected every time the display panel (P) is mounted on the panel mounting jig (12), and the detected display panel (P) is detected. The panel mounting jig and tilting device (49) is operated in accordance with the posture, so that the posture of the display panel (P) can be adjusted to the posture of the inspection camera (20). In addition to this, the panel mounting jig and tilting device (49) is operated according to the position and the arrangement angle of the inspection camera (20), and the orientation of the display panel (P) is adjusted in parallel with the imaging surface of the inspection camera (20). be able to.

  FIG. 6 is a perspective view showing a display panel inspection apparatus according to a third embodiment of the present invention. FIG. 7 is a display panel inspection apparatus according to the third embodiment of the present invention. FIG. 8 is a front view showing a panel mounting jig and a panel mounting jig / tilting device, and FIG. 8 shows a panel mounting jig and a panel mounting jig / tilt of a display panel inspection apparatus according to a third embodiment of the present invention. FIG.

  As shown in FIGS. 6 to 8, the display panel inspection apparatus (68) according to the third embodiment of the present invention is the display panel inspection apparatus (68) according to the second embodiment of the present invention described above. 48), the structure of the panel mounting jig and tilting device (70) has been changed, so that the other panel mounting jig (12), the photographing device (18), and the photographing device (18) are moved. The structure and operation of the photographing device moving unit (34) to be operated and the control device (46) for controlling the overall operation of the device are as described above.

  As shown in FIGS. 6 to 8, the panel mounting jig and tilting device (70) includes a first support shaft (72) disposed on the upper surface of a support (71) disposed on the bottom surface, and a first support. A tilting plate (73) that rotates about an axis (72), a first tilting actuator (76) for tilting the tilting plate (73), and a tilting plate (73 ) And a second support shaft (83) to which the panel mounting jig (12) is rotatably coupled, and a second tilting actuator (for tilting the panel mounting jig (12)). 86).

  The first support shaft (72) is disposed on the upper surface of the support column (71) in the width direction of the display panel (P) mounted on the panel mounting jig (12). The column (71) is provided with a pair of shaft support members (74), and the first support shaft (72) is supported by the pair of shaft support members (74). A first bearing (75) prepared on the lower surface of the tilting plate (73) is coupled to the middle of the first support shaft (72). The tilting plate (73) is rotatably coupled to the first support shaft (72) through the first bearing (75). Therefore, the tilting plate (73) can rotate around the first support shaft (72). The first support shaft (72) is located in the center of the tilting plate (73).

  The tilting plate (73) is tilted by a first tilting actuator (76) provided on the column (71). The first tilting actuator (76) includes an actuator body (77) and an actuating rod (78) removably coupled to the actuator body (77). The actuator body (77) is hinged to the column (71) and the actuating rod (78) is hinged to the tilting plate (73). As shown in FIG. 8, the action point (L1) of the force applied by the actuating rod (78) of the first tilting actuator (76) to the tilting plate (73) is from the first support shaft (72). Located in the detached part.

  A pair of support members (79) are provided on the upper surface of the support column (71), and the actuator body (77) is a pair of support members by a hinge pin (80) arranged in a direction parallel to the first support shaft (72). (79) is rotatably coupled. The bottom surface of the tilting plate (73) is provided with a pair of support members (81), and the operating rod (78) is disposed in a direction parallel to the first support shaft (72). By this, it is rotatably coupled to the pair of support members (81). As the operating rod (78) of the first tilting actuator (76) moves forward or backward, the tilting plate (73) rotates clockwise or counterclockwise around the first support shaft (72). Can rotate in the direction.

  In the present invention, the coupling structure between the first support shaft (72) and the tilting plate (73) is not limited to that shown. That is, the first bearing shaft (72) may be coupled to the lower surface of the tilting plate (73), and the first bearing (75) may be provided on the upper surface of the support column (71). In addition, the coupling structure of the first support shaft (72) and the tilting plate (73) is such that the first support shaft (72) is interposed between the support column (71) and the tilting plate (73). The tilting plate 73 can be changed to various structures in which the tilting plate 73 is disposed and rotated about the first support shaft 72.

  In addition, the first tilting actuator (76) can be changed to other structures that push and pull the tilting plate (73) in addition to the structure shown. Depending on the structure of the first tilting actuator (76), the first tilting actuator (76) and the strut (71) can be joined together, or the first tilting actuator (76) and the tilting plate ( 73) can also be changed.

  The second support shaft (83) on the tilting plate (73) is disposed on the upper surface of the tilting plate (73) in the length direction of the display panel (P) placed on the panel mounting jig (12). The The tilting plate (73) includes a pair of shaft support members (84), and the second support shaft (83) is supported by the pair of shaft support members (84). A second bearing (85) prepared on the lower surface of the panel mounting jig (12) is coupled to the middle of the second support shaft (83). The panel mounting jig (12) is rotatably coupled to the second support shaft (83) through the second bearing (85). Therefore, the panel mounting jig (12) can rotate around the second support shaft (83). The second support shaft (83) is positioned at the center of the panel mounting jig (12) so as to intersect perpendicularly with the first support shaft (72).

  The panel mounting jig (12) is tilted by a second tilting actuator (86) provided on the tilting plate (73). The second tilting actuator (86) includes an actuator body (87) and an actuating rod (88) movably coupled to the actuator body (87). The actuator body (87) is hinged to the tilting plate (73) and the actuating rod (88) is hinged to the panel mounting jig (12). As shown in FIG. 8, the action point (L2) of the force applied by the actuating rod (88) of the second tilting actuator (86) to the panel mounting jig (12) is removed from the second support shaft (83). Located in the part.

  A pair of support members (89) are provided on the upper surface of the tilting plate (73), and the actuator body (87) is paired by a hinge pin (90) arranged in a direction parallel to the second support shaft (83). The support member (89) is rotatably coupled. A pair of support members (91) is provided on the lower surface of the panel mounting jig (12), and the operating rod (88) is provided by a hinge pin (92) arranged in a direction parallel to the second support shaft (83). A pair of support members (91) are rotatably coupled. When the operating rod (88) of the second tilting actuator (86) moves forward or backward, the panel mounting jig (12) rotates clockwise or counterclockwise about the second support shaft (83). Can be rotated.

  In the present invention, the coupling structure between the second support shaft (83) and the panel mounting jig (12) is not limited to that shown. That is, the second support shaft (83) may be coupled to the lower surface of the panel mounting jig (12), and the second bearing (85) may be provided on the upper surface of the tilting plate (73). In addition, the second support shaft (83) and the panel mounting jig (12) are coupled to each other with the second support shaft (83) between the tilting plate (73) and the panel mounting jig (12). The panel mounting jig (12) can be changed to various structures that are arranged and rotate around the second support shaft (83).

  Further, the second tilting actuator (86) can be changed to other structures for pushing and pulling the panel mounting jig (12) in addition to the structure shown. The structure of the second tilting actuator (86) and the tilting plate (73) or the second tilting actuator (86) and the panel mounting jig depending on the structure of the second tilting actuator (86). The coupling structure with (12) can also vary.

  Such a panel mounting jig tilting device (70) has a display panel (P) width in which the first tilting actuator (76) places the tilting plate (73) on the panel mounting jig (12). A display panel in which a second mounting actuator (86) is placed on the panel mounting jig (12) by rotating about a first support shaft (72) disposed in a direction. The display panel (P) mounted on the panel mounting jig (12) is tilted at various directions and angles by rotating around the second support shaft (83) arranged in the length direction of P). be able to. Therefore, the posture of the display panel (P) can be adjusted to the inspection camera (20) according to the position and the arrangement angle of the inspection camera (20). Further, the first support shaft (72) forms the rotation center axis of the tilting plate (73), and the second support shaft (83) forms the rotation center axis of the panel mounting jig (12). The panel mounting jig (12) can be tilted stably.

  In the drawing, the first support shaft (72) of the panel mounting jig and tilting device (70) is arranged at the center of the tilting plate (73), and the second support shaft (83) is mounted on the panel mounting jig (12). The first support shaft (72) is arranged so as to be eccentric to the center of the tilting plate (73), and the second support shaft is shown. (83) can also be arranged to be eccentric in the center of the panel mounting jig (12), so that the first support shaft (72) and the second support shaft (83) intersect without crossing each other. Can be arranged. Further, the first support shaft (72) is disposed in the diagonal direction of the tilting plate (73), and the second support shaft (83) is disposed in the diagonal direction of the panel mounting jig (12). You can also.

  FIG. 9 is a plan view showing a display panel inspection apparatus according to a fourth embodiment of the present invention.

  The display panel inspection apparatus (100) according to the fourth embodiment of the present invention shown in FIG. 9 is equipped with a turntable (105) arranged parallel to the bottom surface and a display panel (P). A plurality of panel mounting jigs (12) provided on the turntable (105) and a cleaning device (115) for cleaning the display panel (P) mounted on the panel mounting jig (12). Then, the inspection camera (20) for photographing the display panel (P) mounted on the panel mounting jig (12) and the upper part of the display panel (P) photographed by the inspection camera (20) are irradiated with light. An imaging device (18) having an illuminating device (21), an imaging device moving unit (34) for moving the imaging device (18), and an inspected A protective film attachment device (125) for attaching a protective film (F) on the playing panel (P), a marking device (155) for displaying a mark on the display panel (P) having defects, and photographing And a control device (46) for analyzing the image taken by the device (18) to detect the absence of the display panel (P) and controlling the overall operation of the device. Here, the panel mounting jig (12), the photographing device (18), and the photographing device moving unit (34) are as described above.

  The turntable (105) is placed parallel to the bottom surface and rotates about an axis perpendicular to the bottom surface. The turntable (105) is rotated by a turntable rotating device (106), and a circular rotation path (C) serving as a transfer path for a plurality of panel mounting jigs (12) is prepared on the turntable (105). The turntable rotating device (106) rotates the turntable (105) intermittently by a fixed angle, whereby the panel mounting jig (12) provided on the turntable (105) stops in the rotation path (C). A plurality of work zones (Z1 to Z4) are prepared. The turntable (105) is provided with four panel mounting jigs (12), and the control device (46) controls the turntable rotating device (106) to rotate the turntable (105) intermittently by 90 °.

  In the rotation path (C), four work zones (Z1 to Z4) including a loading zone (Z1), a cleaning zone (Z2), a photographing zone (Z3), and a protective film attachment zone (Z4) are turntables (Z1). 105) are prepared in order along the rotation direction. In the loading zone (Z1), a panel transport device (110) for loading the display panel (P) onto the panel mounting jig (12), and a display panel (P) mounted on the panel mounting jig (12). A protective film removing device (112) for separating the protective film (F) from the protective film (F) is provided. A cleaning device (115) for cleaning the display panel (P) mounted on the panel mounting jig (12) is provided in the cleaning zone (Z2), and a panel mounting jig (Z3) is provided in the photographing zone (Z3). A photographing device (18) for photographing the display panel (P) attached to 12) is provided. In the protective film attachment zone (Z4), the protective film attachment device (125), the marking device (155), and the display panel (P) attached to the panel attachment jig (12) are transported to the outside of the panel attachment jig (12). A panel transport device (158) is provided.

  In the panel transport device (110) (158) provided in the loading zone (Z1) and the protective film mounting zone (Z4), the display panel (P) is gripped and mounted on the panel mounting jig (12), or the panel mounting Various structures can be used which are separated from the jig (12) and transported to the outside. The protective film detaching device 112 has various structures for holding the protective film (F) attached to the display panel (P), detaching it from the display panel (P), and moving it to other positions. Can be used.

  As shown in FIGS. 9 and 10, the turntable (105) is connected to a plurality of panel mounting jigs (12) and rotates with the panel mounting jig (12). A plurality of protective film mounting plates (109) to which a protective film (F) to be detached from the panel (P) can be mounted are provided.

  A plurality of protective film mounting plates (109) are provided on the turntable (105) so as to contact each panel mounting jig (12). The protective film mounting plate (109) is the protective film (F) in which the protective film removing device (112) is detached from the display panel (P) mounted on the panel mounting jig (12) in the loading zone (Z1). Is for storing. The contact surface of the protective film (F) attached to the display panel (P) with the display panel (P) has some adhesiveness, but the protective film (109) placed on the protective film mounting plate (109) If F) is to be reused, the protective film (F) must be easily separated from the protective film mounting plate (109). For this purpose, the protective film mounting plate 109 may be made of a low friction material such as a surface coated with a low friction material such as tepron.

  Although the drawing shows that the same number of protective film mounting plates (109) as the number of panel mounting jigs (12) are provided on the turntable (105), the number of protective film mounting plates (109) installed is the number of panel mounting jigs. Various changes may be made according to the number of jigs (12) installed, the number of panel mounting portions (13) provided in the panel mounting jig (12), and the like. The panel mounting jig rotating device (108) may be omitted when it is not necessary to rotate the panel mounting jig (12) on the rotation path (C) due to the structure or operation of the device provided in each work zone. it can. Further, when the protective film (F) detached from the display panel (P) mounted on the panel mounting jig (12) is not reused, the protective film mounting plate (109) can be omitted.

  The display panel (P) to be inspected is mounted on the panel mounting jig (12) by the panel transport device (110) in the loading zone (Z1) of the rotation path (C) on the turntable (105). . The protective film (F) attached to the display panel (P) is detached from the display panel (P) by the protective film detaching device (112) in the loading zone (Z1), and is attached to the protective film mounting plate. (109) It is transferred to above. After being mounted on the panel mounting jig (12) in this way, the display panel (P) from which the protective film (F) has been detached is transferred to the cleaning zone (Z2) by the rotation of the turntable (105). .

  As shown in FIGS. 9 and 10, the display panel (P) mounted on the panel mounting jig (12) in the cleaning zone (Z2) is cleaned by the cleaning device (115). The cleaning device (115) is for cleaning the upper surface of the display panel (P) and includes an air cleaner (116) and a roller cleaner (120).

  The air cleaner (116) is for injecting air onto the upper surface of the display panel (P) mounted on the panel mounting jig (12) and blowing out foreign matter from the upper surface of the display panel (P). An air injection mechanism (117) for moving the air injection mechanism (117) and an air injection mechanism moving device (118) for moving the air injection mechanism (117). The air injection mechanism (117) is connected to an air supply device (not shown) through an air supply tube (119), and injects air onto the upper surface of the display panel (P). The air injection mechanism moving device (118) moves the air injection mechanism (117) so that the air injection mechanism (117) injects air over the entire upper surface of the display panel (P).

  The roller cleaner (120) includes a cleaning roller (121) and a roller moving device (122) for moving the cleaning roller (121). The cleaning roller (121) rolls in contact with the upper surface of the display panel (P) and separates foreign matter on the upper surface of the display panel (P). The cleaning roller (121) has adhesiveness on its outer surface, and when the roller is moved in contact with the upper surface of the display panel (P), foreign matter on the upper surface of the display panel (P) is attached to the cleaning roller (121). Can be removed. The cleaning roller (121) is rotatably coupled to a roller support member (123) coupled to a roller moving device (122), and the roller moving device (122) moves the cleaning roller (121) to a display panel (P ).

  When the display panel (P) is mounted on the panel mounting jig (12) and transferred to the cleaning zone (Z2), first, the air cleaner (116) is activated to remove foreign matter on the upper surface of the display panel (P). Blow away. Thereafter, the roller cleaner (120) is operated to remove the foreign matter on the upper surface of the display panel (P) that has not been removed by the air cleaner (116) with the cleaning roller (121). Of course, the operation method of the air cleaner (116) and the roller cleaner (120) can be variously changed. The specific structures of the air cleaner (116) and the roller cleaner (120) are not limited to those shown, and can be variously changed. In addition to the structure including the air cleaner (116) and the roller cleaner (120), the cleaning device (115) can be used to remove various foreign substances on the upper surface of the display panel (P) mounted on the panel mounting jig (12). It can be changed to other structures.

  The display panel (P) cleaned by the cleaning device (115) is transferred to the photographing zone (Z3) in the cleaning zone (Z2) by the rotation of the turntable (105). In the photographing zone (Z3), the panel mounting jig rotating device (108) rotates the panel mounting jig (12) by 90 °, and the photographing device (18) is moved by the photographing device moving unit (34) while the photographing zone (Z3). The display panel (P) transferred to the camera is partially photographed continuously to provide a photographed image to the control device (46). The operation of the photographing apparatus (18) and the photographing apparatus moving unit (34) is as described above.

  When the inspection camera (20) provides a captured image of the display panel (P) to the control device (46), the control device (46) analyzes the captured image to search for a defective portion of the display panel (P), It is determined whether or not the display panel (P) is defective. The control device (46) controls the operation of the marking device (155) and the like based on the analysis result of the photographed image. A specific control method of the control device (46) will be described later. .

  In the photographing zone (Z3), the display panel (P) that has been inspected by the photographing device (18) is transferred to the protective film attachment zone (Z4) by the rotation of the turntable (105). As shown in FIGS. 9 and 11, the protective film mounting zone (Z4) has a protective film mounting device (125) for mounting the protective film (F) on the display panel (P), and a display panel (P ) And a panel conveying device (158) for unloading the display panel (P) from the panel mounting jig (12). In the protective film mounting zone (Z4), the panel mounting jig rotating device (108) rotates the panel mounting jig (12) by 90 ° to return the panel mounting jig (12) rotated in the photographing zone (Z3) to the original posture. Let

  Referring to FIG. 9, FIG. 11 and FIG. 12, the protective film attaching device (125) is transported on the protective film transport device (126) for transporting the protective film (F) and the display panel (P). A protective film pressing device (145) for pressing the protective film (F) applied to the upper surface of the display panel (P). The protective film conveying device (126) and the protective film pressing device (145) are coupled to the support mechanism (133) together with the marking device (155). The protective film carrying device (126) includes a protective film gripping mechanism (127) for gripping the protective film (F) and a moving unit (135) for moving the protective film gripping mechanism (127).

  The protective film gripping mechanism (127) is hinged to a bracket (128) whose one end is coupled to a support mechanism (133) that is moved by a moving unit (135). One surface of the protective film gripping mechanism (127) is provided with a plurality of suction ports (129) for generating suction input. The plurality of suction ports (129) are connected to a flow path (130) prepared in the protective film gripping mechanism (127), and the flow path (130) is a vacuum tube connected to a suction input generator (not shown). (131). The suction input generated by the suction input generator is transmitted to the plurality of suction ports (129), whereby the protective film (F) can be attached to one surface of the protective film gripping mechanism (127). The suction input generation operation of the protective film gripping mechanism (127) through the suction port (129) is controlled by the control device (46).

  The moving unit (135) includes a lifting / lowering device (136) coupled to the support mechanism (133) and a support mechanism (133) coupled to the protective film gripping mechanism (127) to the panel mounting jig (12). A first moving device (137) for moving in a first direction parallel to the upper surface of the display panel (P), and a support mechanism (133) in the first direction parallel to the upper surface of the display panel (P). And a second moving device (138) that moves in a second direction that intersects. Here, the first direction is the width direction of the display panel (P) mounted on the panel mounting jig (12), and the second direction is the display panel (P) mounted on the panel mounting jig (12). ) In the length direction.

  The lifting device (136) is coupled to the first slider (139), and the first slider (139) is linearly moved by the first moving device (137). The first slider (139) is coupled onto the second slider (140), and the second slider (140) moves linearly to the second moving device (138). The second slider (140) is provided with a first guide rail (141) arranged in the width direction of the display panel (P) mounted on the panel mounting jig (12), and the first slider (139) is prepared. ) Is linearly moved along the first guide rail (141) by the first moving device (137). The first moving device (137) is coupled to the second slider (140). The second slider (140) is attached to the second guide rail (142) disposed in the length direction of the display panel (P) mounted on the panel mounting jig (12) on the support (143) placed on the bottom surface. Coupled to be slidable, the second moving device (138) moves linearly along the second guide rail (142).

  The protective film gripping mechanism (127) moves the protective film (F) placed on the protective film mounting plate (109) while moving in the up / down / front / rear / left / right directions by the moving unit (135). It can be transported on the display panel (P) attached to 12).

  The protective film pressing device (145) is a pressure roller for pressing the protective film (F) conveyed to the upper surface of the display panel (P) by the protective film conveying device (126) onto the upper surface of the display panel (P). (146), a roller pressing device (148) for pressing the pressure roller (146) toward the protective film (F) conveyed to the upper surface of the display panel (P), a moving unit (135), including. Here, the moving unit (135) is like the moving unit (135) of the protective film carrying device (126), and the protective film carrying device (126) and the protective film pressing device (145) are the moving unit (135). Share

  The pressure roller (146) is rotatably coupled to a roller support (147) coupled to a protective film gripping mechanism (127). The body (149) of the roller pressing device (148) is hinged to a bracket (151) connected to the support mechanism (133), and the operating rod (150) of the roller pressing device (148) is a protective film gripping mechanism ( 127) to a bracket (152) which is connected to 127). Accordingly, when the operating rod (150) of the roller pressurizing device (148) advances from the body (149), the protective film gripping mechanism (127) and the roller support (147) coupled thereto become the support mechanism (133). It can be rotated and tilted about the hinge joint of the joined bracket (151).

  As shown in FIG. 12, when the display panel (P) mounted on the panel mounting jig (12) is transferred to the protective film attachment zone (Z4), the protective film gripping mechanism (127) is moved to the moving unit (135). ) To grip the protective film (F) mounted on the protective film mounting plate (109), and then transport it onto the display panel (P). At this time, a part of the protective film (F) is located below the pressure roller (146).

  Thereafter, as shown in FIG. 13, the roller pressing device (148) of the protective film pressing device (145) is activated to tilt the protective film gripping mechanism (127) and the roller support (75) coupled thereto. At this time, the pressure roller (146) brings the protective film (F) into close contact with the upper surface of the display panel (P). After the pressure roller (146) has adhered the protective film (F) to the upper surface of the display panel (P), the pressure roller (146) is moved to the upper surface of the display panel (P) by the action of the moving unit (135). It rolls in contact with the protective film (F). At this time, the protective film (F) attached to the protective film gripping mechanism (127) is pulled by the pressure roller (146) and gradually separated by the protective film gripping mechanism (127). It adheres to the upper surface of If the protective film (F) attached to the protective film gripping mechanism (127) is tilted in this manner and is gradually brought into close contact with the upper surface of the display panel (P) to the pressure roller (146), the display panel ( Air bubbles can be prevented from flowing between P) and the protective film (F).

  The marking device (155) is for displaying a mark on the display panel (P) on the protective film (F) to indicate whether the display panel (P) is defective or not, and to move the marker (156) and the moving unit (156). 135). In the marker (156), various types of marks are displayed on the protective film (F) with a colorant such as ink, an adhesive display mark is attached to the protective film (F), or the protective film (F). Various structures such as displaying scratch-type marks can be used. The moving unit (135) is like the moving unit (135) of the protective film conveying device (126) and the protective film pressing device (145), and the protective film conveying device (126), the protective film pressing device (145) and the marking. The device (155) shares the mobile unit (135).

  When the moving unit (135) moves the support mechanism (133) in multiple directions, the marker (156) coupled to the support mechanism (133) becomes a display panel (P) mounted on the panel mounting jig (12). Can be moved in various directions on the panel mounting jig (12) so that marks are displayed at various positions.

  When the protective film (F) is attached to the display panel (P), the control device (46) controls the operation of the marking device (155) based on the analysis result of the photographed image with respect to the display panel (P). That is, as shown in FIG. 14, the control device (46), when there is a defect in the display panel (P) as a result of the captured image analysis of the display panel (P), displays on the display panel (P). A mark is displayed at the defect position of the display panel (P), for example, by moving the marker (156) and displaying the possibility of defect on the display panel (P).

  In the present embodiment, the specific structure of the moving unit (135) for moving the protective film gripping mechanism (127), the pressure roller (146), and the marker (156) is not limited to that shown, but variously. Can be changed. For example, the arrangement order of the lifting device (136), the first moving device (137), and the second moving device (138) is not limited to those shown, and can be changed in various ways. ) And the protective film gripping mechanism (127), the pressure roller (146), the marker (156), and the like can be variously modified. In addition, the specific structures of the lifting device (136), the first moving device (137), and the second moving device (138), and the coupling structure between them are also changed to other forms. Can do. In addition, the moving unit (135) may be changed to a structure that moves the support mechanism (133) in addition to a structure that linearly moves the support mechanism (133) upward, downward, front, rear, left, and right. Can do.

  When the work of attaching the protective film (F) to the display panel (P) and the mark display work are completed in the protective film attachment zone (Z4), the panel transport device (158) is activated to start the panel mounting jig (12). Unload the display panel (P). At this time, the panel carrying device (158) can make the carrying position for the display panel (P) where the defect is detected different from the carrying position for the display panel (P) where the defect is not detected. For example, in the panel transport device (158), the display panel (P) in which a defect is detected is transported to a defective product storage position, and the display panel (P) in which a defect is not detected is transported to a normal product storage position. can do.

  As described above, the display panel inspection apparatus (10) according to the fourth embodiment of the present invention includes a plurality of panel mounting jigs (12) on which the display panel (P) is mounted on the turntable (105). Install and rotate the turntable (105) intermittently by a certain angle, display panel loading, display panel cleaning, display panel inspection, display panel protection film attached, and display of defective parts on the display panel By performing operations such as display, display panel unloading, etc. continuously, many display panels (P) can be inspected quickly and effectively. You can search for it.

  Further, the display panel inspection apparatus (10) according to the fourth embodiment of the present invention is mounted on a turntable (105) that rotates a plurality of panel mounting jigs (12) on which the display panel (P) is mounted. Thus, the display panel (P) can be inspected while the display panel (P) to be inspected is transferred along the rotation path (C) prepared on the turntable (105). . Therefore, a compact structure is possible without occupying a separate installation space.

  Further, the display panel inspection apparatus (10) according to the fourth embodiment of the present invention inspects the display panel (P) with the photographing apparatus (18), and then has a display with a defect through the marking apparatus (155). The defect position and defect availability can be automatically displayed on the panel (P). Accordingly, the repair work for the display panel (P) and the subsequent work such as assembly or packaging can be performed smoothly, and the operator can easily grasp the defect position of the display panel (P). The analysis work for the defect occurring in (P) should be easily performed.

  In the present embodiment, the types of work zones prepared in the rotation path (C) through which the display panel (P) mounted on the panel mounting jig (12) is transferred and the devices provided in each work zone are shown. It can be changed in various ways without being limited to the above. For example, not only the loading operation of the display panel (P) but also the unloading operation of the inspected and marked display panel (P) can be performed in the loading zone (Z1). The position where the display panel (P) is loaded and the position where the protective film (F) is detached from the display panel (P) can be separated, and the protective film is applied to the inspected display panel (P). The operation of attaching (F) and the position for displaying the mark on the protective film (F) attached to the display panel (P) can be separated.

  Also, the marking device (155) can be omitted in the rotation path (C). In this case, the display panel (P) is mounted only after the protective film (F) is attached to the inspected display panel (P) without displaying the presence / absence of defects or the position of the defect on the inspected display panel (P). It can be unloaded with a panel mounting jig (12).

  Moreover, the protective film attachment device (125) for attaching the protective film (F) to the inspected display panel (P) is not limited to the structure including the protective film transport device (126) and the protective film pressing device (145) as shown. It can be changed to various other structures for holding the protective film (F) and attaching it to the upper surface of the display panel (P).

  In the drawing, the marking device (155), the protective film attaching device (125), and the protective film pressing device (145) are shown to share one moving unit (135), but the marking device (155), The protective film attaching device (125) and the protective film squeezing device (145) are individually provided with a moving unit (135) and can move individually without moving together. As another modification, the marking device (155) is individually moved with one moving unit (135), and the protective film attaching device (125) and the protective film pressing device (145) are one other movement. The protective film attaching device (125) and the protective film squeezing device (145) can move together by sharing the unit (135).

  In addition, as shown, the protective film transporting device (126) grips the protective film (F) in addition to a structure having a protective film gripping mechanism (127) that sucks the protective film (F) through suction and transports it. And can be changed to various other structures to carry. The protective film squeezing device (145) is not limited to the structure shown, but may be changed to another structure that squeezes the protective film (F) onto the upper surface of the display panel (P).

  Then, the protective film attachment device (125) removes the protective film (F) placed on the protective film mounting plate (109) after being detached from the display panel (P) before the inspection, and displays the protective film (F). A new protective film (F) supplied from the outside can be attached to the inspected display panel (P) without being attached again.

  Further, the panel transport devices (110) and (158), the protective film removing device (112), and the protective film attaching device (125) may be omitted in the rotation path (C). In this case, the operation of loading the display panel (P) onto the panel mounting jig (12) and the operation of unloading the display panel (P) from the panel mounting jig (12) can be performed passively by the operator. . The operator can passively perform the operation of removing the protective film (F) from the display panel (P) and the operation of attaching the protective film (F) to the inspected display panel (P) again.

  The embodiments of the present invention shown in the drawings together with the foregoing should not be construed to limit the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those having ordinary knowledge in the technical field of the present invention can improve and change the technical idea of the present invention in various forms. Is possible. Therefore, such improvements and modifications will fall within the protection scope of the present invention as long as it is obvious to those skilled in the art.

10, 48, 68, 100 Display panel inspection device 12 Panel mounting jig 13 Panel mounting portion 15 Backlight 16 Drive driver 18 Imaging device 20 Inspection camera 21 Illumination device 22 Frame 23 Inspection camera rotation device 24 Connecting member 25 Illumination device motion Unit 26 Rotating device 27, 28 of lighting device Moving device 29, 30 of first and second lighting devices First, second moving members 31, 32 First and second guide grooves 34 Imaging device moving unit 35 Elevating and lowering of imaging device Devices 36, 37 Moving device 38 of first photographing device Support column 40, 139 First slider 41, 140 Second slider 42, 141 First guide rail 43, 142 Second guide rail 44, 50, 71 143 Post 46 Control device 49, 70 Panel mounting jig tilting device 51 Pivot Shafts 55 and 76 First tilting actuators 61 and 86 Second tilting actuators 72 and 83 First and second support shafts 73 Tilting plates 75 and 85 First and second bearings 105 Turntable 106 Turn Table rotation device 108 Panel mounting jig rotation device 109 Protective film mounting plate 110, 158 Panel transport device 115 Cleaning device 116 Air cleaner 117 Air injection mechanism 118 Air injection mechanism moving device 120 Roller cleaner 121 Cleaning roller 122 Cleaning roller moving device 125 Protective film attachment device 126 Protective film transport device 127 Protective film gripping mechanism 133 Support mechanism 135 Moving unit 136 Lifting device 137, 138 First and second moving devices 14 Protective film pressing apparatus 146 pressure roller 148 roller pressure device 155 the marking device 156 markers

Claims (22)

A panel mounting jig having a panel mounting portion on which a display panel is mounted;
A backlight provided on the panel mounting jig for irradiating light to a lower portion of the display panel mounted on the panel mounting jig;
An inspection camera arranged so that a lens unit faces the display panel for photographing the display panel mounted on the panel mounting jig, and a photographing angle of the inspection camera with respect to the display panel is changed. An inspection camera rotating device for rotating the inspection camera, a frame for supporting the inspection camera rotating device, an illumination device for irradiating light on an upper part of the display panel photographed by the inspection camera, and coupled to the frame An imaging device comprising: an illumination device motion unit that supports the illumination device and moves the illumination device so that an angle of light irradiation of the illumination device with respect to the display panel changes; and the imaging device is used for the display The photographic device is set to shoot the panel partly continuously. An inspection device for a display panel, comprising: an imaging device moving unit for moving. In the description of claim 1,
The display panel inspection apparatus further includes a drive driver electrically connected to the panel mounting jig to drive the display panel mounted on the panel mounting unit. In the description of claim 1,
The display panel inspection apparatus according to claim 1, wherein the illumination device motion unit includes a rotation device of an illumination device that rotates the illumination device. In the description of claim 3,
The illuminating device moving unit is configured to move the illuminating device forward toward the inspection camera or to move backward from the inspection camera, and a moving device of the first illuminating device,
And a moving device of a second lighting device that lowers the lighting device so as to be close to the display panel mounted on the panel mounting jig or lifts the lighting device so as to be far from the display panel. Display panel inspection equipment. In the description of claim 1,
The photographing device moving unit includes a moving device of a first photographing device that moves the photographing device in a length direction of the display panel mounted on the panel mounting jig, and a width of the display panel. An apparatus for inspecting a display panel, comprising: a moving device for a second photographing device that moves in a direction; and a lifting device for the photographing device that moves the photographing device in a vertical direction. In the description of claim 1,
The display panel inspection apparatus further includes a panel mounting jig and tilting device for tilting the panel mounting jig in multiple directions. In the description of claim 6,
The panel mounting jig and tilting device is:
A pivot shaft that supports the panel mounting jig so that it can be tilted in multiple directions;
A first tilting actuator that pushes and pulls the panel mounting jig to tilt the panel mounting jig around a first tilting center line parallel to the bottom surface;
Second tilting that pushes and pulls the panel mounting jig so that the panel mounting jig is parallel to the bottom surface and tilts about the second tilting center line that intersects the first tilting center line. An inspection device for a display panel, comprising an actuator. In the description of claim 6,
The panel mounting jig and tilting device is:
A first support shaft coupled to the panel mounting jig and disposed parallel to the bottom surface;
A first tilting actuator that pushes and pulls the panel mounting jig to tilt the panel mounting jig about the first support shaft;
A second support shaft disposed at a lower portion of the panel mounting jig so as to intersect the first support shaft in parallel with the bottom surface;
Tilting coupled to the second support shaft to support the first support shaft and the first tilting actuator so that it can be tilted about the second support shaft.・ Plate,
A display panel inspection apparatus comprising: a second tilting actuator that pushes and pulls the tilting plate to tilt the tilting plate about the second support shaft. In the description of claim 1,
The panel mounting jig is mounted, and further includes a turntable that is intermittently rotated by a turntable rotating device to transfer the panel mounting jig along a rotation path,
The display panel inspection apparatus according to claim 1, wherein the imaging apparatus is provided in an imaging zone prepared so that the panel mounting jig stops on the rotation path. In the description of claim 9,
A protective film detaching device that is provided upstream of the photographing device in the rotation path and detaches the protective film attached to the display panel attached to the panel attachment jig from the display panel. A display panel inspection apparatus comprising: In the description of claim 10,
The display device further includes a protective film mounting plate provided on the turntable so that the protective film is detached from the display panel by the protective film detaching device. Panel inspection device. In the description of claim 9,
The apparatus further includes a protective film attaching device that is provided downstream of the photographing device in the rotation path and attaches a protective film to an upper surface of the display panel that is attached to the panel attaching jig and passes through the photographing zone. Display panel inspection equipment. In the description of claim 12,
The protective film attachment device is
A protective film gripping mechanism for gripping and transporting the protective film to the upper surface of the display panel;
A moving unit coupled to the protective film gripping mechanism to move the protective film gripping mechanism;
The mobile unit is
An elevating device for moving the protective film gripping mechanism in the vertical direction;
A first moving device for moving the protective film gripping mechanism in a first direction parallel to an upper surface of the display panel mounted on the panel mounting jig;
And a second moving device that moves the protective film gripping mechanism in a second direction that intersects the first direction in parallel with the upper surface of the display panel mounted on the panel mounting jig. Display panel inspection device. In the description of claim 12,
The protective film attachment device is
A display panel inspection apparatus, further comprising: a protective film squeezing device having a pressure roller that presses and compresses the protective film transported to the upper surface of the display panel against the upper surface of the display panel. In the description of claim 14,
The protective film attachment device is
The display panel inspection apparatus further includes a roller pressurizing device for pressurizing the pressurizing roller toward the protective film conveyed to the upper surface of the display panel. In the description of claim 12,
The protective film attachment device is
A protective film gripping mechanism having a plurality of suction ports so as to adsorb the protective film and transport it to the upper surface of the display panel;
A pressure roller coupled to one end of the protective film gripping mechanism so as to be capable of rolling and moving so as to press and squeeze the protective film adsorbed on the protective film gripping mechanism onto the upper surface of the display panel
The protective film gripping mechanism is hinged, and a moving unit that moves the protective film gripping mechanism;
A roller pressure device that tilts the protective film gripping mechanism so that the pressure roller approaches the upper surface of the display panel and pressurizes the protective film adsorbed by the protective film gripping mechanism onto the upper surface of the display panel. And a display panel inspection apparatus. In the description of claim 9,
Marking for displaying a mark on a protective film provided on the upper surface of the display panel mounted on the panel mounting jig and passed through the imaging device, provided downstream of the imaging device in the rotation path An apparatus; and a control device that analyzes a photographed image provided from the photographing device to determine whether or not the display panel mounted on the panel mounting jig is defective and controls the operation of the marking device;
The control device controls the marking device to display a mark on a protective film attached to the upper surface of the display panel if there is a defect in the captured image of the display panel photographed by the photographing device. Display panel inspection device. In the description of claim 17,
The marking device is
A marker capable of displaying a mark on the protective film;
A lifting device for moving the marker in the vertical direction;
A first moving device for moving the marker in a first direction parallel to an upper surface of the display panel mounted on the panel mounting jig;
And a second moving device for moving the marker in a second direction parallel to the upper surface of the display panel mounted on the panel mounting jig and intersecting the first direction. Panel inspection equipment. In the description of claim 9,
The display panel inspection apparatus further includes a cleaning device provided upstream of the imaging device in the rotation path for cleaning an upper surface of the display panel mounted on the panel mounting jig. In the description of claim 19,
The cleaning device includes:
An inspection apparatus for a display panel, comprising: an air cleaner that injects air onto an upper surface of the display panel mounted on the panel mounting jig to blow off foreign matter from the upper surface of the display panel. In the description of claim 19,
The cleaning device includes:
Inspecting a display panel, comprising: a roller cleaner having a cleaning roller that rotates and moves in contact with an upper surface of the display panel mounted on the panel mounting jig to separate foreign matter from the upper surface of the display panel. apparatus. In the description of claim 9,
A panel transporting device that is provided downstream of the imaging device in the rotation path and that transports the display panel mounted on the panel mounting jig to the outside of the panel mounting jig; and an imaging provided from the imaging device A control device that analyzes an image to determine whether or not the display panel mounted on the panel mounting jig is defective and controls the operation of the panel transport device;
The display device inspection apparatus according to claim 1, wherein the control device adjusts the transport position of the display panel transported by the panel transport device based on whether or not the display panel is defective.

Images