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A pixel circuit, driving method and display

A pixel circuit and drive unit technology, which is applied in the field of electronic displays, can solve the problems of unstable light emission of light-emitting diodes and complex circuit structures, etc.

Active Publication Date: 2021-08-24
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention provides a pixel circuit, a driving method and a display, which are used to solve the problems of unstable light emission and complex circuit structure of light-emitting diodes existing in existing pixel circuits

Method used

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  • A pixel circuit, driving method and display
  • A pixel circuit, driving method and display
  • A pixel circuit, driving method and display

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Effect test

Embodiment 1

[0078] Figure 11 One of the feasible implementations of a pixel circuit provided by the embodiment of the present invention, such as Figure 11 As shown, the compensation unit includes a data gate transistor T3, a compensation transistor T1 and a switch transistor T5, the drive unit includes a drive transistor T2 and a light emission control transistor T4, and the initialization unit includes a first initialization transistor T6 and a second initialization transistor T7.

[0079] In the compensation unit, the drain of the data strobe transistor T3 is electrically connected to the source of the compensation transistor T1, and the source of the data strobe transistor T3 is electrically connected to the data signal data; the gate of the data strobe transistor T3 is electrically connected to the first scan signal Sn is electrically connected; the gate of the compensation transistor T1 is electrically connected to the gate of the driving transistor T2 through the first node N1, and ...

Embodiment 2

[0088] Figure 12 One of the feasible implementations of a pixel circuit provided by the embodiment of the present invention, such as Figure 12 As shown, the compensation unit includes a data gate transistor T3 and a compensation transistor T1, the drive unit includes a drive transistor T2 and a light emission control transistor T4, and the initialization unit includes a first initialization transistor T6 and a second initialization transistor T7.

[0089] In the compensation unit, the drain of the data strobe transistor T3 is electrically connected to the source of the compensation transistor T1, and the source of the data strobe transistor T3 is electrically connected to the data signal data; the gate of the data strobe transistor T3 is electrically connected to the first scan signal Sn is electrically connected; the gate of the compensation transistor T1 is electrically connected to the gate of the driving transistor T2 through the first node N1, and the drain of the compe...

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Abstract

The invention discloses a pixel circuit, a driving method and a display, comprising: a compensation unit connected to a driving unit; an external power supply, a driving unit and a first light-emitting unit sequentially connected in series; a capacitor located between the first node and an external power supply; an initialization unit The first electrode of the first initialization transistor is connected to the first node, the gate of the first initialization transistor is externally connected to the second scanning signal, the second electrode of the first initialization transistor is connected to the second light emitting unit, and the first electrode of the second initialization transistor The electrodes are connected to the second light-emitting unit, the second electrode of the second initialization transistor is externally connected to the initialization voltage, and the gate of the second initialization transistor is externally connected to the second scanning signal; the first initialization transistor and the second initialization transistor are a double-gate transistor. The invention can actually avoid the influence of the external power supply on the data signal, improve the luminescence stability of the light emitting diode and simplify the circuit.

Description

technical field [0001] The invention relates to the technical field of electronic displays, in particular to a pixel circuit, a driving method and a display. Background technique [0002] In an existing pixel circuit, generally a light emitting diode in the pixel circuit is driven to emit light through a thin film transistor, and this thin film transistor is called a driving transistor. The driving transistor works in a saturated state, because in the saturated state, the sensitivity of the driving current output by the driving transistor to the source-drain voltage is lower than that of the driving transistor in the linear state, which can provide a more stable driving current for the light emitting diode. figure 1 For the existing most basic pixel circuit, such as figure 1 As shown, the pixel circuit is composed of two transistors T11 and T12, and a capacitor C11. When the Sn signal controls the transistor T12 to be turned on, the data signal data is written into the N1 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G2310/0264G09G3/3233G09G2300/0819G09G2300/0842G09G2300/0861G09G2310/0251G09G2310/0262G09G2320/043G09G3/22G09G2310/0243
Inventor 周兴雨
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD