Abstract:
A display panel testing bench, wherein the display panel testing bench comprises: a bench base, a chassis, a probe assembly, and a linkage assembly; a bench base moving assembly is disposed on the chassis; the bench base is movable on the chassis by the bench base moving assembly, the bench base is configured to fix a display panel; the linkage assembly is disposed on the chassis, and is configured to perform a joint movement of the probe assembly and the bench base; the probe assembly is disposed above the bench base; wherein, when the bench base is moved on the chassis by the bench base moving assembly, the bench base drives the linkage assembly, and the probe assembly is driven by the linkage assembly to move above the display panel.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     Applicant claims priority under 35 U.S.C. §119 of Chinese Application No. 201510307079.7 filed on Jun. 5, 2015, the disclosure of which is incorporated by reference. 
     TECHNICAL FIELD 
     Embodiments of the present disclosure relate to a display panel testing bench. 
     BACKGROUND 
     In a process for producing a display panel (e.g. a liquid crystal display panel), some defects (for example, some damaged thin film transistors) may occur in a product itself. Therefore, the display panel needs to be tested. At present, the display panel is generally tested by means of a lightening region of the display panel (the display panel may be turn on by inputting electrical signals to the display panel through the lightening region). 
     SUMMARY 
     In accordance with an aspect of an embodiment of the present disclosure, there is provided a display panel testing bench, the display panel testing bench comprises: a bench base, a chassis, a probe assembly, and a linkage assembly; a bench base moving assembly is disposed on the chassis; the bench base is movable on the chassis by the bench base moving assembly, the bench base is configured to fix a display panel; the linkage assembly is disposed on the chassis, and is configured to perform a joint movement of the probe assembly and the bench base; the probe assembly is disposed above the bench base; wherein, when the bench base is moved on the chassis by the bench base moving assembly, the bench base drives the linkage assembly, and the probe assembly is driven by the linkage assembly to move above the display panel. 
     It should be understood that general description above and description in detail below are exemplary and illustrative only, and thus are not limitative of the invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order to clearly illustrate the technical solution of the embodiments of the disclosure, the drawings of the embodiments will be briefly described in the following; it is obvious that the described drawings are only related to some embodiments of the disclosure and thus are not limitative of the disclosure. 
         FIG. 1  is a structural schematic diagram of display panel testing bench according to an embodiment of the present disclosure; 
         FIG. 2-1  is a structural schematic diagram of another display panel testing bench according to an embodiment of the present disclosure; 
         FIG. 2-2  is a structural schematic diagram of still another display panel testing bench according to an embodiment of the present disclosure; 
         FIG. 2-3  is a structural schematic diagram of a further display panel testing bench according to an embodiment of the present disclosure; 
         FIG. 2-4  is a structural schematic diagram of the display panel testing bench illustrated in  FIG. 2-3  having an installing groove being placed with a display panel; 
         FIG. 2-5  is a structural schematic diagram of a fixing assembly in the display panel testing bench provided by the embodiment illustrated in  FIG. 2-3 ; 
         FIG. 2-6  is an schematic diagram of installing the fixing assembly and a bench base provided in the display panel testing bench provided by the embodiment illustrated in  FIG. 2-3 ; and 
         FIGS. 3-1 and 3-2  are operational schematic diagrams of the display panel testing bench provided ban embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     In order to make objects, technical details and advantages of the embodiments of the disclosure apparent, the technical solutions of the embodiments will be described in a clearly and fully understandable way in connection with the drawings related to the embodiments of the disclosure. Apparently, the described embodiments are just a part but not all of the embodiments of the disclosure. Based on the described embodiments herein, those skilled in the art can obtain other embodiment(s), without any inventive work, which should be within the scope of the disclosure. 
     Generally, a display panel testing bench is used to test a display panel. The display panel testing bench may include a bench base (for fixing the display panel) and a probe assembly (for connecting with a lightening region, and inputting electrical signals to the display panel). When the display panel testing bench is used, the display panel is disposed in the bench base to be fixed. Then, an operator will dispose the probe assembly on the lightening region and press it manually, so that probes of the probe assembly are stabbed into the lightening region (to connect the probe assembly with the lightening region). Then, electrical signals are input into the display panel through the probe assembly, thereby testing whether the display panel can work normally or not. 
     It is found by the inventor that the above method has following defects: the above method needs the operator press the probe assembly manually, so that the probe assembly can be controlled. It is difficult to control the probe assembly, and may damage the display panel. 
       FIG. 1  is a structural schematic diagram of a display panel testing bench according to an embodiment of the present disclosure. The display panel testing bench may include: a bench base  110 , a chassis  120 , a probe assembly  130 , and a linkage assembly  140 , and the probe assembly  130  may include probes. 
     A bench base moving assembly  121  may be disposed on the chassis  120 . 
     The bench base  110  may be moved on the chassis  120  by the bench base moving assembly  121 , and the bench base  110  is for fixing the display panel. 
     The linkage assembly  140  may be disposed on the chassis  120  to jointly move the probe assembly  130  and the bench base  110 . 
     The probe assembly  130  may be disposed above the bench base  110 . 
     For example, when the bench base  110  is moved on the chassis  120  by the bench base moving assembly  121 , the linkage assembly  140  is driven. The linkage assembly  140  drives the probe assembly  130  to move above the display panel (not illustrated in  FIG. 1 ). When the bench base  110  is moved to a predetermined position, the probe assembly  130  may also be moved to a corresponding predetermined position over the display panel. In the corresponding predetermined position, the probes of the probe assembly  130  may be just stabbed into a lightening region of the display panel. 
     In summary, the display panel testing bench provided by the embodiments of the present disclosure moves the bench base and the probe assembly jointly by the linkage assembly, so that the bench base can drive the probe assembly to move above the display panel through the linkage assembly when the bench base moves. It solves some problems in a related technology, such as, the probe assembly being controlled manually by the operator pressing it, the probe assembly being difficult to control, and having risks of damaging the display panel. Thus, an effect of the probe assembly being controlled safely and quickly may be achieved. 
     Further,  FIG. 2-1  illustrates a structural schematic diagram of another display panel testing bench provided ban embodiment of the present disclosure. The display panel testing benches some new components on basis of the display panel testing bench as illustrated in  FIG. 1 , so that the display panel testing bench provided by the embodiment of the present disclosure may have a better performance. 
     For example, the linkage assembly  140  may include: a linkage gear  141  and a drive rod  142 . 
     A rack  111  may be disposed at an edge of the bench base  110 , the rack  111  may be coupled with the linkage gear  141 , and the rack  111  has a length direction y 1  parallel to a moving direction y 2  of the bench base  110 . 
     The drive rod  142  may be in a movable connection with the linkage gear  141 . The movable connection may be implemented by a hinge, a bearing or the like, and the drive rod  142  may be connected with the probe assembly. For example, the drive rod  142  is detachably connected with the probe assembly  130 . Lightening regions of different display panels may be located at different positions. And the display panel testing bench provided by the embodiments of the present disclosure can test many display panels with different lightening region positions by replacing the probe assembly. 
     The linkage gear  141  may be disposed on the chassis  120 , and may be rotated around an axis of the linkage gear  141  (not illustrated in  FIG. 2-1 ). For example, the bench base moving assembly  121  is a bench base slider module. The bench base slider module may include a slider and a track. The track may be disposed on the chassis  120 , the slider may be disposed on the bench base  110 , and the slider cooperates with the track, so that the bench base  110  can be moved on the chassis  120 . 
     For example, when the bench base  110  is moved on the chassis  120 , the rack  111  drives the linkage gear  141  to rotate, and the linkage gear  141  drives the drive rod  142  to change a height h of the probe assembly  130  from the bench base  110 . When the bench base  110  is moved to a predetermined position (for example, an end of the bench base moving assembly  121 , which is a position that the bench base  110  cannot be moved), the height h of the probe assembly  130  from the bench base  110  may just be such a height that the probes of the probe assembly  130  stab the lightening region of the display panel. Furthermore, the probe assembly  130  may be connected with a signal generating assembly, and the signal generating assembly may provide display signals to the display panel through the probes of the probe assembly  130 . 
       FIG. 2-2  illustrates a structural schematic diagram of another display panel testing bench provided ban embodiment of the present disclosure, in which the linkage assembly  140  may further include: a stabilizing wheel  143 . 
     The stabilizing wheel  143  may be disposed on the chassis  120 , and may be rotated around an axis of the stabilizing wheel  143  (not illustrated in  FIG. 2-2 ). 
     The stabilizing wheel  143  may be in movable connection with the drive rod  142 . A line connecting a center x 1  of the stabilizing wheel  143  and a center x 2  of the linkage gear  141  is a linkage line  11 . The linkage line  11  is parallel to a length direction c of the drive rod  142 . 
     For example, when the linkage gear  141  drives the drive rod  142  to change the height of the probe assembly  130  from the bench base  110 , the stabilizing wheel  143  can makes the length direction c of the drive rod  142  to be parallel to a vertical direction d of the bench base  110 , wherein the vertical direction d is a direction perpendicular to an upper surface of the bench base  110 . 
       FIG. 2-2  illustrates a structural schematic diagram of the display panel testing bench when probes of the probe assembly  130  stab the lightening region of the display panel. 
       FIG. 2-3  illustrates a structural schematic diagram of another display panel testing bench provided by an embodiment of the present disclosure. The bench may further include: a fixing assembly  150  for fixing the display panel. 
     The fixing assembly  150  includes: a handle  151  and movable columns  152 . 
     An installing groove  112  passing through the bench base  110  along the vertical direction d of the bench base  110  is disposed on the bench base  110 , and the installing groove  112  is used for placing the display panel. 
     For example, at least one buffer column  1121  is disposed at an edge of an opening of the installing groove  112  on the bench base  110 , and the buffer column  1121  is made of a flexible material. 
       FIG. 2-4  illustrates a structural schematic diagram when the installing groove of the display panel testing bench illustrated in  FIG. 2-3  is placed with the display panel. A side of the display panel A is in contact with a side of the at least one buffer columns  1121 . Since the at least one buffer columns  1121  are made of a flexible material, the display panel A can be prevented from be damaged when the display panel A is installed at the installing groove. In  FIG. 2-4 , f may be the lightening region of the display panel A. 
     As illustrated in  FIG. 2-3 , a backlight assembly  122  is disposed on the chassis  120  below the installing groove  112 , and the backlight assembly  122  can provide backlight to the display panel through the installing groove  112 . Furthermore, when the display panel is tested, a polarizing plate may be disposed on the backlight assembly  122  and on the bench base  110  to help with testing the display panel. 
     Sliding groove  113  may be disposed on the bench base  110 , and the sliding groove  113  may be connected to the installing groove  112 . 
     The movable columns  152  are disposed in the sliding groove  113  and are firmly connected with the handle  151 , and there may be two movable columns  152 .  FIG. 2-5  is a structural schematic diagram of the fixing assembly  150 , where the movable columns  152  are firmly connected with the handle  151 . 
     In  FIG. 2-3 , when the handle  151  has a displacement with respect to the bench base  110 , the handle  151  can drive the movable columns  152  to slide in the sliding groove  113 . When the movable columns  152  slide to a position connecting the sliding groove  113  and the installing groove  112 , a side of the movable columns  152  can be in contact with a side of the display panel installed at the installing groove  112 , and the display panel is fixed in the installing groove  112 . 
     For example,  FIG. 2-6  is a diagram for installing a fixing assembly and the bench base  110 , where the handle  151  is connected with the bench base  110  by a handle-slider module  1511 . 
     It should be further described that, in the display panel testing bench provided by the embodiments of the present disclosure, when the drive rod is moved by the stabilizing wheel, the length direction of the drive rod is parallel to the vertical direction of the bench base, thereby obtaining an effect of increasing stability of the display panel. 
     In summary, the display panel testing bench provided by the embodiments of the present disclosure, the bench base and the probe assembly may be jointly moved by the linkage assembly, so that the bench base can drive the probe assembly to move above the display panel through the linkage assembly when the bench base moves. It solves some problems in a related technology, such as, the probe assembly being controlled manually by the operator pressing it, the probe assembly being difficult to control, and having risks of damaging the display panel. Thus, an effect of the probe assembly being controlled safely and quickly may be achieved. 
     In order to facilitate understanding, a method for operating the display panel testing bench provided by the embodiments as described above will be described below. 
     At first,  FIG. 3-1  is a schematic diagram illustrating operations of a display panel testing bench without a display panel being disposed therein. Then, the display panel is disposed in an installing groove  112 , and the handle  151  is pushed in a direction T (a direction parallel to a moving direction y 2  of the bench base), the display panel is fixed by the movable columns  152 .  FIG. 3-2  is a schematic diagram illustrating operations of the display panel A being fixed in the installing groove by the movable columns  152 . For example, the display panel A may be in contact with a buffer column  1121  and the movable columns  152  disposed at an edge of an opening of the installing groove. Then, the handle  151  is pushed continuously in the direction T, the bench base  110  is driven to move towards right. The linkage assembly drives the probe assembly  130  to be close to the display panel A, until the bench base  110  arrives to a predetermined position. The probes in the probe assembly  130  stab the lightening region f of the display panel A.  FIG. 2-2  is a schematic diagram of a display panel testing bench when the probes in the probe assembly  130  stab the lightening region f of the display panel. Afterwards, the probe assembly  130  may input display signals to the display panel, and may test the display panel. After the test is performed, when the display panel needs to be taken out, the handle may be pulled in a direction opposite to the direction T, the probes of the probe assembly  130  may be pulled away from the lightening region of the display panel. The movable columns may become noting contact with the display panel. Then, the display panel can be taken outfit can be seen that a whole process for testing the display panel and a process for taking out are simple, safe and quick. 
     What are described above is related to the illustrative embodiments of the disclosure only and not limitative to the scope of the disclosure; the scopes of the disclosure are defined by the accompanying claims. 
     The present application claims priority of the Chinese patent application No. 201510307079.7 filed on Jun. 5, 2015, the disclosure of which is incorporated herein by reference in its entirety as part of the present application.