Abstract: A display device includes: a display panel that displays an image; a plurality of mount boards having long-length shaped disposed along the display panel; and light emitting elements arrayed on each of the plurality of mount boards in a longitudinal direction of each of the plurality of mount boards. The light emitting elements emit light toward the display panel from behind the display panel, and are arranged in a matrix shape along the display panel. The display device further includes: a back surface board on which the plurality of mount boards is stuck by an adhesive member; and a reflective sheet mounted to the back surface board. The reflective sheet has holes that allow the light emitting elements to pass through at positions corresponding to the light emitting elements, and reflects the light emitted from the light emitting elements toward the display panel. Each of the plurality of mount boards is constituted of a flexible wiring board.

Abstract: A display device includes: a display panel that displays an image; a plurality of mount boards having long-length shaped disposed along the display panel; and light emitting elements arrayed on each of the plurality of mount boards in a longitudinal direction of each of the plurality of mount boards. The light emitting elements emit light toward the display panel from behind the display panel, and are arranged in a matrix shape along the display panel. The display device further includes: a back surface board on which the plurality of mount boards is stuck by an adhesive member; and a reflective sheet mounted to the back surface board. The reflective sheet has holes that allow the light emitting elements to pass through at positions corresponding to the light emitting elements, and reflects the light emitted from the light emitting elements toward the display panel. Each of the plurality of mount boards is constituted of a flexible wiring board.

Abstract: A resonant pulse voltage having a positive polarity is applied by a first resonant circuit and a third resonant circuit to a horizontal deflection coil included in the first resonant circuit, and a resonant pulse voltage having a negative polarity which is opposite to that of resonant pulse voltages applied by the first resonant circuit and the third resonant circuit is applied to only a horizontal deflection coil in the first resonant circuit without being applied to a transistor by a second resonant circuit.

Abstract: A resonant pulse voltage having a positive polarity is applied by a first resonant circuit and a third resonant circuit to a horizontal deflection coil included in the first resonant circuit, and a resonant pulse voltage having a negative polarity which is opposite to that of resonant pulse voltages applied by the first resonant circuit and the third resonant circuit is applied to only a horizontal deflection coil in the first resonant circuit without being applied to a transistor by a second resonant circuit.