Samsung Display Co., Ltd.

Joo Nyung Jang

Jae Ho Lee

Kyung Ho Jung

Hyun Seok Ko

A method of aligning a light emitting element includes providing an ink comprising light emitting elements on a substrate, a first electrode and a second electrode being disposed on the substrate and spaced apart from each other, and applying an AC voltage to the first electrode and the second electrode. The AC voltage is controlled so that a maximum value of an output AC voltage between the first electrode and the second electrode is higher than a first threshold voltage and a minimum value of the output AC voltage has a magnitude higher than a second threshold voltage, and the first threshold voltage and the second threshold voltage have a same magnitude and opposite polarities.

Method of aligning light emitting element and method of manufacturing display device

An apparatus for manufacturing a display device comprises a stage, a panel cell disposed on the stage and including a first alignment line, and a second alignment line extending parallel to the first alignment line, a field application part providing an alignment signal to the first alignment line and the second alignment line of the panel cell, and light-emitting elements aligned between the first alignment line and the second alignment line. The field application part provides an alignment signal to the first alignment line and the second alignment line, the alignment signal having the same positive integral value and negative integral value, having a different positive peak voltage from the alignment signal's negative peak voltage, and having a different positive pulse width from the alignment signal's negative pulse width.

Apparatus and method for manufacturing display device

There is provided a an apparatus for manufacturing a display device. An apparatus for manufacturing a display device comprises a body generating ultrasonic vibration; and a horn including a horn body portion connected to the body and amplifying the ultrasonic vibration and a horn tip portion connected to the horn body portion and applying the ultrasonic vibration onto a bonding object, wherein the horn body portion includes at least one body groove surrounded by the horn body portion and completely penetrating the horn body portion in a thickness direction from the surface of the horn body portion.

Apparatus for manufacturing display device and method of manufacturing display device

A panel bottom assembly includes a light-blocker with first concave patterns formed on a top surface thereof. A vibration acoustic device is disposed below, and coupled to, the light-blocker. A buffer is disposed below the light-blocker. A bonding is disposed between the light-blocker and the vibration acoustic device. The bonding has second concave patterns formed on a top surface thereof. The second concave patterns are different from the first concave patterns.

Panel bottom member and display device including ihe same

A bonding apparatus and method includes: a stage configured to fix a first electric component; a pressing unit configured to press a conductive adhesive film and a second electric component onto the first electric component; a driver configured to control movement of the pressing unit along a direction; and a plurality of sensors at different positions on the stage and configured to sense a change in capacitance with the pressing unit, wherein the pressing unit includes a flat metal material in first regions facing the plurality of sensors.

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Seoul, South Korea

Joo Nyung Jang