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Display apparatus

專利號
US10867561B2
公開日期
2020-12-15
申請人
CANON KABUSHIKI KAISHA(JP Tokyo)
發(fā)明人
Yasuharu Ota; Yasushi Matsuno; Yu Maehashi; Hiromasa Tsuboi
IPC分類
G09G3/3291; G09G3/3266; G09G3/3233; H01L27/32
技術(shù)領(lǐng)域
signal,pixel,image,pixels,in,driving,voltage,row,line,emission
地域: Tokyo

摘要

A display apparatus in which selection circuits and display blocks are arranged is provided. Each of the display blocks include signal lines extending in a column direction, and pixels connected to the signal lines and arranged in a matrix in the column direction and in a row direction crossing the column direction. Each of the selection circuits selects a signal line in a predetermined order to supply an image signal among the signal lines such that the image signal is written in each of the pixels arranged in the row direction among the pixels. A time to select at least one signal line among the signal lines and supply the image signal is different from a time to select a signal line other than the at least one signal line among the signal lines and supply the image signal.

說明書

In the driving method according to the comparative example shown in FIG. 4, the switch SW1, the switch SW2, . . . , the switch SW9 are turned on in this order, and the signal lines 124 to supply the image signals are selected. Hence, when focus is placed on the emission colors of the pixels 110 of the connection destinations, the image signals are supplied in the order of red, green, blue, red, green, blue, red, green, and blue. When the image signals are written in this order in the pixels 110 (pixels R1 to B3), the signal voltages are written continuously in the pixels 110 of different emission colors from the first column to the ninth column. For this reason, in some cases, the difference between the signal voltages of the image signals becomes large between two columns to which the image signals are continuously supplied. If the difference between the signal voltages of the image signals is large, the time until the image signal obtains the desired signal voltage becomes long, the signal voltage does not reach the desired signal voltage within the time in which the switch SW is on, and the switch SW is turned off in some cases. In the arrangement shown in FIG. 4, the difference between the signal voltage Vg1 of the image signal supplied to the pixel G1 and the signal voltage Vb1 of the image signal of the pixel B1 to which the image signal is supplied next to the pixel G1 is large. After the image signal is supplied to the signal line 124 connected to the pixel G1, the switch SW3 configured to select the signal line 124 connected to the pixel B1 is turned on, and the image signal is supplied. However, at the point of time when the switch SW3 is turned off, the transition of the signal voltage of the image signal of the signal line 124 connected to the pixel B1 to the desired signal voltage Vb1 is not completed yet because the signal voltage difference between the signal voltage Vg1 and the signal voltage Vb1 is large. Similarly, in the signal lines 124 connected to the pixels R1, G2, and G3, the supply of image signals delays, and the transition to the desired signal voltages Vr1, Vg2, and Vg3 of the image signals is not completed.

權(quán)利要求

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