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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

The pixels used in the display apparatus 100 according to this embodiment will be described next. As described above, the pixels configured to emit light components of red (R), green (G), and blue (B) are arranged. For the descriptive convenience, in a pixel 110 shown in FIG. 2, a driving circuit for an organic light emitting element 111 of one of the three colors is shown. In the arrangement shown in FIG. 2, the pixel 110 includes the current driven type organic light emitting element 111 that changes emission luminance in accordance with a current flowing to the light emitting element, and a driving circuit configured to drive the organic light emitting element 111. The cathode electrode of the organic light emitting element 111 is connected to a common power supply 125 that is commonly arranged for the organic light emitting elements of all pixels arranged in the display region 101.

The driving circuit configured to drive the organic light emitting element 111 includes a driving transistor 112, a selection transistor 113, switching transistors 114 and 115, and capacitive elements 116 and 117. In this embodiment, p-channel transistors (PMOS transistors) are used as the driving transistor 112, the selection transistor 113, and the switching transistors 114 and 115.

The driving transistor 112 is connected in series with the anode electrode of the organic light emitting element 111, thereby supplying a driving current to the organic light emitting element 111. More specifically, the drain electrode of the driving transistor 112 is connected to the anode electrode of the organic light emitting element 111.

權(quán)利要求

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