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Pixel unit circuit, method for driving the same, and pixel circuit

專利號
US10867556B2
公開日期
2020-12-15
申請人
BOE Technology Group Co., Ltd.（CN Beijing）
發(fā)明人
Yingming Liu; Xue Dong; Haisheng Wang; Xiaoliang Ding; Changfeng Li; Wei Liu
IPC分類
G09G3/3258
技術(shù)領(lǐng)域
sub,circuit,pixel,voltage,data,terminal,dtft,line,reading,transistor
地域： Beijing

摘要

A pixel unit circuit, a driving method of the pixel unit circuit, and a pixel circuit are provided. The pixel unit circuit includes at least one sub-pixel sub-unit circuit connected to display signal lines and display signal terminals; and pixel compensation sub-unit circuit connected to two compensation signal lines and at least one compensation signal terminal, wherein one of the display signal lines and one of the compensation signal lines are a same signal line, and/or one of the display signal terminals and one of the at least one compensation signal terminal are a same signal terminal, and/or the pixel unit circuit further includes a multiplexer sub-circuit, one of the display signal lines is connected to a first terminal of the multiplexer sub-circuit, one of the compensation signal lines is connected to a second terminal of the multiplexer sub-circuit.

說明書

The reading control sub-circuit 21 includes a reading control transistor TW. A gate electrode of the reading control transistor TW is connected to the second gate line Scan2, a drain electrode of the reading control transistor TW is connected to a cathode of the photosensitive diode PD, and a source electrode of the reading control transistor TW is connected to the reading line RL.

An anode of the photosensitive diode PD is connected to the low-voltage input terminal inputted with the low voltage VSS.

In the second example as shown in FIG. 2 of the present disclosure, both TD and TW may be n-type transistors. However, in actual conditions, the TD and the TW may also be P-type transistors. Types of the transistors are not specifically limited herein.

In the second example shown in FIG. 2, the cathode of the OLED and the anode of the PD are connected to the same voltage input terminal, so that a quantity of signal terminals is reduced and a quantity of leading wires is reduced.

As shown in FIG. 3, a third example of the pixel unit circuit according to the present disclosure includes a sub-pixel sub-unit circuit and a pixel compensation sub-unit circuit.

The sub-pixel sub-unit circuit includes a data writing sub-circuit 11, a storage capacitor sub-circuit 12, a driving transistor DTFT and a light emitting element 13. The sub-pixel sub-unit circuit is connected to at least two display signal lines and at least two display signal terminals.

權(quán)利要求

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