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Organic light emitting diode pixel compensation circuit and organic light emitting display device

A technology of light-emitting diodes and compensation circuits, which is applied to circuits, electrical components, and electric solid-state devices, and can solve problems such as uneven brightness displayed by organic light-emitting diodes

Inactive Publication Date: 2017-02-22
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the exemplary embodiment of the present invention is to provide an organic light emitting diode pixel compensation circuit to solve the problem of uneven display brightness of organic light emitting diodes in the prior art

Method used

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  • Organic light emitting diode pixel compensation circuit and organic light emitting display device
  • Organic light emitting diode pixel compensation circuit and organic light emitting display device
  • Organic light emitting diode pixel compensation circuit and organic light emitting display device

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Embodiment Construction

[0020] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments are described below to explain the present invention by referring to the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0021] figure 1 A circuit diagram showing an OLED pixel compensation circuit according to an exemplary embodiment of the present invention.

[0022] The OLED pixel compensation circuit according to an exemplary embodiment of the present invention is used to drive an organic light emitting diode to emit light. It should be understood that an OLED pixel may include a plurality of sub-pixels. As an example,...

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Abstract

The invention provides an organic light emitting diode pixel compensation circuit used for driving an organic light emitting diode. The organic light emitting diode pixel compensation circuit is characterized by that the compensation circuit comprises a multipath multiplexer and a plurality of sub-pixel compensation circuits. The connection relationship between any one switch in the multipath multiplexer and the corresponding sub-pixel compensation circuit is as follows; a first connection terminal of the switch receives a data voltage, a control terminal of the switch receives an enable signal to make the switch in response to an effective electrical level of the enable signal received by the control terminal for conducting conduction, and a second connection terminal of the switch is connected with the corresponding sub-pixel compensation circuit so as to provide the data voltage for the corresponding sub-pixel compensation circuit. By adopting the organic light emitting diode pixel compensation circuit, the multipath multiplexer can be used for providing the data voltage for each organic light emitting diode sub-pixel, the number of data signal transmission channels is greatly reduced, and the production cost of an integrated circuit is reduced.

Description

technical field [0001] The present invention generally relates to the field of display technology, and more specifically, relates to an organic light emitting diode pixel compensation circuit and an organic light emitting display device. Background technique [0002] In an AMOLED (Active-matrix organic light emitting diode, active matrix organic light emitting diode or active matrix organic light emitting diode) display device, the luminous brightness of each OLED (organic light emitting diode) is determined by the driving current generated by the driving circuit Determined, the driving current generated by the driving circuit can be expressed by the following formula: [0003] I OLED =k(V gs -V th ) 2 , [0004] Among them, k is the current amplification factor related to the process parameters and feature size of the drive transistor, V gs is the voltage difference between the gate and source of the drive transistor, or the gate and drain (depending on the type of dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3258
CPCG09G3/3258H10K59/12G09G2300/0861G09G2310/0251G09G2310/0262G09G2320/043G09G3/3233G09G2310/0297H10K59/35G09G2320/0233
Inventor 李骏
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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