Abstract: A display device includes a matrix-type display element, a drive circuit, a control circuit, and a temperature sensor, the control circuit controls the drive circuit so that an initialization pulse to initialize a pixel to be rewritten is applied to bring about an initial gradation state and then a gradation pulse is applied to the initialized pixel to bring about a gradation state, the cumulative time during which the gradation pulse is applied is related to the value of the gradation state, the control circuit fixes the pulse voltage of the initialization pulse and varies the pulse width of the initialization pulse in accordance with the temperature detected by the temperature sensor, and varies the pulse width of the gradation pulse when the temperature is low and varies the pulse voltage of the gradation pulse when the temperature detected is high.

Abstract: The present invention accomplishes a screen image display apparatus capable of changing a transfer direction of screen image signal freely. A master control 1 has a plurality of channels, with a signal line 2 being connected for transmitting a screen image signal so as to let each of the channels display a character or image. The signal line 2 is connected to a plurality of display blocks 3 by way of board-A, that is, signal transfer means. Each display block 3 comprises a board-A 4, that is, signal transfer means, a board-B 5, that is, signal supply means, and lamp units 6, that is, light emitting modules. And a screen image signal for causing the display block 3 to display a character or image is transferred from each channel of the master control 1 in a data transfer direction 7 via the signal line 2.

Abstract: The present invention accomplishes a screen image display apparatus capable of changing a transfer direction of screen image signal freely. A master control 1 has a plurality of channels, with a signal line 2 being connected for transmitting a screen image signal so as to let each of the channels display a character or image. The signal line 2 is connected to a plurality of display blocks 3 by way of board-A, that is, signal transfer means. Each display block 3 comprises a board-A 4, that is, signal transfer means, a board-B 5, that is, signal supply means, and lamp units 6, that is, light emitting modules. And a screen image signal for causing the display block 3 to display a character or image is transferred from each channel of the master control 1 in a data transfer direction 7 via the signal line 2.