Inspection device and display panel inspection method

An inspection device, comprising:

• a main frame;
• a guide plate, connected to the main frame;
• a self-return guide rod structure, slidably coupled to the guide plate;
• a press limit structure, coupled to the guide plate, the press limit structure being configured to limit the self-return guide rod structure to slide within a predetermined range;
• a press handle structure, coupled to an upper portion of the self-return guide rod structure and the main frame respectively;
• and
• an indenter structure, located under the guide plate and coupled to a lower end of the self-return guide rod structure;
• wherein the self-return guide rod structure includes:
• at least one guide rod, the guide rod having a longitudinal axis parallel to a slide direction of the guide plate, the guide rod being inserted through a guide hole of the guide plate, a lower end of the guide rod being connected to the indenter structure;
• a connecting block, fixedly connected to an upper portion of the guide rod and coupled to the press handle structure;
• and
• a return spring, fitted on an outer periphery of the guide rod, one end of the return spring leaning against the connecting block, another end of the return spring leaning against the guide plate;
• wherein the press handle structure includes:
• a connecting seat, connected to the main frame;
• a press handle, one end of the press handle being hinged to the connecting seat;
• and
• a connecting rod, one end of the connecting rod being hinged to a middle portion of the press handle, another end of the connecting rod being hinged to the connecting block;
• wherein the press limit structure includes a limit adjustment assembly and a limit block, the limit adjustment assembly is configured to drive the limit block to move in a direction parallel to the slide direction of the guide plate, the limit block is located under the connecting block, an upper end surface of the limit block is configured to lean against a lower end surface of the connecting block, and the limit block is coupled to the guide plate through the limit adjustment assembly;
• wherein the limit adjustment assembly includes:
• at least two guide screw rods, disposed on the guide plate, the guide screw rods each having a longitudinal axis parallel to the longitudinal axis of the guide rod;
• guide nuts, corresponding to the guide screw rods respectively, the guide nuts being screwed to the guide screw rods respectively;
• guide seats, corresponding to the guide nuts respectively, the guide seats being fitted on the guide screw rods respectively, the guide seats being located on top of the guide nuts respectively and coupled to the limit block;
• wherein the indenter structure includes:
• a support frame, coupled to the lower end of the self-return guide rod structure;
• and
• a contact block, disposed at a lower portion of the support frame, a lower end of the contact block extending out of a lower end of the support frame.

A display panel inspection method, comprising the steps of:

• adjusting a press limit structure to limit slide displacement of a self-return guide rod structure within a predetermined range;
• placing and securing a display panel to a worktable, an area to be inspected of the display panel corresponding in position to an indenter structure;
• providing a press handle structure to drive the indenter structure to approach the display panel until the self-return guide rod structure is moved to a maximum displacement;
• obtaining a distribution situation of dead pixels in the area to be inspected;
• and
• controlling the press handle structure for the self-return guide rod structure to drive the indenter structure and the press handle structure to return to an initial position.