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Emission control drive circuit and organic light emitting display device

A technology of emission control and driving circuit, which is applied in the direction of static indicators, instruments, etc., can solve problems such as current instability, screen Mura defects, single-drive OLED light emission, etc., to achieve the effect of dimming function and improve the uniformity of the screen

Inactive Publication Date: 2020-12-01
NANJING CEC PANDA LCD TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] figure 1 The traditional OLED pixel driving circuit shown is relatively simple, and the driving of OLED to emit light is relatively simple, so it cannot effectively avoid the current instability caused by the low driving current of OLED due to the low gray scale, which is prone to screen mura defects

Method used

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  • Emission control drive circuit and organic light emitting display device
  • Emission control drive circuit and organic light emitting display device
  • Emission control drive circuit and organic light emitting display device

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Embodiment Construction

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

[0033] In order to make the drawing concise, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked. Herein, "a" not only means "only one", but also means "more than one".

[0034] like fig...

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Abstract

The invention provides an emission control drive circuit and an organic light emitting display device. The emission control drive circuit comprises N stages of emission control drive units, a controlsignal output by the (n-1) th stage of emission control drive unit is connected to the nth stage of emission control drive unit, N and n are both positive integers, and n is greater than or equal to 1and less than or equal to N. The nth-stage emission control driving unit comprises a pull-up and pull-down control unit, a pull-up module, a maintenance module, a pull-down module, an anti-creeping module, a first other module, a second other module and a third other module; wherein; and the pull-up module, the anti-creeping module and the third other module output control signals of the same level. The invention discloses an emission control drive circuit and an organic light emitting display device. The emission control drive circuit provides a control signal En for the matched pixel drivecircuit, can control the OLED pixel light-emitting time, enables human eyes to misjudge the OLED pixel light-emitting time as a low-gray-scale picture, improves the uniformity of the picture, achievesthe adjustment of the brightness and gray scale of the organic light-emitting display device, and achieves the dimming function of the organic light-emitting display device.

Description

technical field [0001] The invention relates to the display field, in particular to an emission control driving circuit and an organic light-emitting display device. Background technique [0002] Organic light emitting diode (Organic Light Emitting Diode, OLED) display panel has self-illumination, low driving voltage, high luminous efficiency, short response time, high definition and contrast, nearly 180-degree viewing angle, wide operating temperature range, and can realize flexible display and With many advantages such as large-area full-color display, it is recognized by the industry as a display device with the most potential for development. [0003] According to the driving method, OLED can be divided into two categories: passive matrix OLED (Passive Matrix, PM) and active matrix OLED (Active Matrix, AM), namely direct addressing and thin film transistor (Thin Film Transistor, TFT) matrix addressing. kind. The AMOLED display panel has a plurality of pixels arranged i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208G09G3/3233
CPCG09G3/3208G09G3/3233G09G2320/0233
Inventor 郭潇潇赖谷皇
Owner NANJING CEC PANDA LCD TECH
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