Disclosed are display module evaluation jigs and methods, The display module evaluation jig includes: a first body defining a plurality of first recessions on a top surface of the first body; a second body disposed on and combined with the first body; and a plurality of insertions on the first recessions and between the first body and the second body. Inner lateral surfaces of the first body are directed toward and spaced apart from lateral surfaces of the insertions. The inner lateral surfaces define the first recessions.

An inspection device for a display apparatus includes a support, a jig portion disposed on the support to enable seating of a display panel, an impact portion configured to apply an impact to the display panel, and a movement portion connecting the support and the impact portion to each other and configured to move the impact portion towards the jig portion. The jig portion includes a base plate, a plurality of support portions arranged on the base plate to be detachable from the base plate, and a cover plate arranged over the plurality of support portions and including a plurality of overlapping areas overlapping the plurality of support portions and an evaluation area arranged between the plurality of overlapping areas. An area where the impact portion applies the impact to the display panel overlaps the evaluation area.

An inspection device for a display apparatus includes a support, a jig portion disposed on the support to enable seating of a display panel, an impact portion configured to apply an impact to the display panel, and a movement portion connecting the support and the impact portion to each other and configured to move the impact portion towards the jig portion. The jig portion includes a base plate, a plurality of support portions arranged on the base plate to be detachable from the base plate, and a cover plate arranged over the plurality of support portions and including a plurality of overlapping areas overlapping the plurality of support portions and an evaluation area arranged between the plurality of overlapping areas. An area where the impact portion applies the impact to the display panel overlaps the evaluation area.

A drop tower apparatus and method of use is provided. The drop tower apparatus includes a base, a frame, a top member, rails, a sled, a triggering system, and a test fixture. The frame extends from the base. The top member is disposed on the frame opposite the base and has a winch. The rails extend from the base to the top member and are disposed within the frame. The sled is configured to slide vertically along the length of the rails and is releasably connected to the winch of the top member. The test fixture is configured to receive a sample for testing. The winch of the top member raises the sled to a desired height, the sled is released at the desired height and slides along the rails resulting in an impact on a sample placed in the test fixture.

A drop tower apparatus and method of use is provided. The drop tower apparatus includes a base, a frame, a top member, rails, a sled, a triggering system, and a test fixture. The frame extends from the base. The top member is disposed on the frame opposite the base and has a winch. The rails extend from the base to the top member and are disposed within the frame. The sled is configured to slide vertically along the length of the rails and is releasably connected to the winch of the top member. The test fixture is configured to receive a sample for testing. The winch of the top member raises the sled to a desired height, the sled is released at the desired height and slides along the rails resulting in an impact on a sample placed in the test fixture.

A device to intercept a falling ball and prevent a second impact in a hardness or other test of a product and a falling ball impact tester including the device are disclosed. The device includes a sensor for detecting a position of the falling ball, an interception plate defining a catching groove, and a driving member connected to the interception plate and the sensor and providing motion. The driving member can move the interception plate to a position where the catching groove is in a falling path of the falling ball or is just outside such path, according to detection by the sensor.

A device to intercept a falling ball and prevent a second impact in a hardness or other test of a product and a falling ball impact tester including the device are disclosed. The device includes a sensor for detecting a position of the falling ball, an interception plate defining a catching groove, and a driving member connected to the interception plate and the sensor and providing motion. The driving member can move the interception plate to a position where the catching groove is in a falling path of the falling ball or is just outside such path, according to detection by the sensor.

An apparatus and method for determining the hardness of a granular material, comprises a base plate member, a sample cup for holding the granular material, an upper plate member, a crusher assembly and a crusher hammer release mechanism. The base plate member includes an upper surface with a recess for holding the sample cup. The upper plate member is positioned above and separated from the base plate member utilizing at least one separator post. The crusher assembly includes a crusher shaft, a crusher weight, a crusher hammer and a linear roller bearing having a retaining ring configured to slidably engage the crusher shaft through a conduit with the crusher weight and the crusher hammer positioned above and below the upper plate member respectively. The crusher hammer release mechanism includes a pair of levers operably connected to a latch cable having a latch pin that runs through a compression spring.

An apparatus and method for determining the hardness of a granular material, comprises a base plate member, a sample cup for holding the granular material, an upper plate member, a crusher assembly and a crusher hammer release mechanism. The base plate member includes an upper surface with a recess for holding the sample cup. The upper plate member is positioned above and separated from the base plate member utilizing at least one separator post. The crusher assembly includes a crusher shaft, a crusher weight, a crusher hammer and a linear roller bearing having a retaining ring configured to slidably engage the crusher shaft through a conduit with the crusher weight and the crusher hammer positioned above and below the upper plate member respectively. The crusher hammer release mechanism includes a pair of levers operably connected to a latch cable having a latch pin that runs through a compression spring.

A drop ball test fixture includes a bracket, first stoppers and connecting components. The bracket has bearing surfaces for bearing edges of a panel and to position the panel in a direction parallel to the bearing surfaces. At least part of each of the first stoppers is located above corresponding one of the bearing surfaces. Each connecting component includes a guide rod, a guide groove and a second stopper. The guide groove is formed on corresponding one of the first stoppers. One end of each of the guide rod is connected to the bracket while the other end thereof passes through the guide groove. Connecting structures are provided at different heights of the guide rod, and the second stopper is matched with and connected to corresponding one of the connecting structures at different heights above the guide groove so as to stop the upward movement of the first stopper.