Unlock instant, AI-driven research and patent intelligence for your innovation.

A driving method for a pixel circuit

A technology of a pixel circuit and a driving method, which is applied in the field of driving a pixel circuit, can solve the problems of difference, current change, influence on the brightness uniformity and brightness constancy of the display, etc.

Active Publication Date: 2017-02-15
BOE TECH GRP CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the production process and the characteristics of polysilicon, when the TFT switch circuit is fabricated on a large-area glass substrate, there are often fluctuations in electrical parameters such as threshold voltage Vth, mobility, etc., so that the current flowing through the OLED device will not only vary with It changes with the change of the on-voltage stress generated by the long-time conduction of the TFT, and it will also vary with the drift of the threshold voltage Vth of the TFT
In this way, it will affect the brightness uniformity and brightness constancy of the display
Thereby reducing the picture quality and quality of the display

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A driving method for a pixel circuit
  • A driving method for a pixel circuit
  • A driving method for a pixel circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] An embodiment of the present invention provides a pixel circuit, such as figure 1 As shown, it may include a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a storage capacitor Cst and a light emitting device D.

[0027] Wherein, the gate of the first transistor T1 is connected to the light emission control signal input terminal Em, the first pole is connected to o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An embodiment of the present invention provides a driving method for a pixel circuit, which relates to the field of display technology, and solves the problem that the ohmic voltage drop at the first voltage terminal and the gate-source voltage of the driving transistor have a non-linear change, which affects the driving current flowing through the light-emitting device. question. It includes: a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a storage capacitor and a light emitting device.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a method for driving a pixel circuit. Background technique [0002] With the rapid progress of display technology, semiconductor element technology, which is the core of the display device, has also been greatly improved. For existing display devices, Organic Light Emitting Diode (OLED) is a current-type light-emitting device, because of its characteristics of self-luminescence, fast response, wide viewing angle and the ability to be fabricated on flexible substrates. And it is increasingly being used in the field of high-performance display. [0003] The above-mentioned OLED device can be used to form an OLED display, and a plurality of TFTs (Thin Film Transistor, thin film transistor) are arranged on the array substrate of the display. In order to improve the carrier mobility of the TFT and reduce the resistivity, the power consumption is smaller when the same curren...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208H01L27/32
CPCG09G3/32G09G3/3233
Inventor 龙春平田宏伟
Owner BOE TECH GRP CO LTD