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Pixel circuit, display, electronic device and driving method for pixel circuit

A pixel circuit and display technology, which is applied in the field of pixel circuits, can solve problems such as difficult large-scale, high-definition displays, image consistency damage, etc., and achieve the effect of suppressing display inconsistencies

Active Publication Date: 2016-09-28
JOLED INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a display using a passive matrix system has a problem that it is difficult to realize a large-scale, high-definition display despite its simple structure
[0008] However, it has been found that, in some cases, since the electro-optical element is turned on in the process of supplying a current to the holding capacitor through the driving transistor when writing the driving voltage corresponding to the video signal to the holding capacitor, the uniformity of the picture is affected. damage

Method used

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  • Pixel circuit, display, electronic device and driving method for pixel circuit
  • Pixel circuit, display, electronic device and driving method for pixel circuit
  • Pixel circuit, display, electronic device and driving method for pixel circuit

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0044] 4-2. Example 2: Example 1+ Initialize Standalone Scan

[0045] 5. Application example

[0046] 5-1. Application example 1

[0047] 5-2. Application example 2

[0048] 5-3. Application example 3

[0049] 5-4. Application example 4

[0050] 5-5. Application example 5

[0051] 6. Constitution of the present invention

[0052] 1. Overall overview

[0053] First, the basic points will be explained below. In any of the embodiments of the present invention, a pixel circuit, a display, or an electronic device includes an electro-optic element (display portion), a holding capacitor, a writing transistor, and a driving transistor. The writing transistor writes a driving voltage corresponding to a video signal supplied to one main electrode terminal of the writing transistor to the holding capacitor. A control input terminal of the driving transistor is connected to one end of the holding capacitor at a first node, and the driving transistor drives the electro-optic elemen...

example 1

[0166] [Specific structure of Example 1]

[0167]Here, the pixel circuit 10A in the display 1A of Example 1 includes a transistor characteristic correction control section 620A for suppressing the display section from writing the drive voltage corresponding to the video signal to the storage capacitor 120 . conduction. The transistor characteristic correction control section 620A of Example 1 includes a capacitance section 621 , an emission control transistor 624 , a threshold voltage correction control transistor 626 , an emission control scanning section 625 , and a threshold voltage correction control scanning section 627 . Capacitor unit 621 is composed of holding capacitor 120 and coupling capacitor 622 . The electrostatic capacitance C of the coupling capacitor 622 cup The value is approximately equal to the electrostatic capacitance C of the holding capacitor 120 CS . The drive scanning section 105 of the pixel circuit 10Z in the display 1Z of the comparative exampl...

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PUM

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Abstract

A pixel circuit including: an electrooptic element; a hold capacitor; a write transistor writing a drive voltage corresponding to a video signal supplied to one of main electrode terminals thereof to the hold capacitor; and a drive transistor driving the electrooptic element in accordance with the drive voltage written to the hold capacitor. A pixel circuit is adapted such that it can suppress turn ON of the electrooptic element during a first processing in which a current is supplied to the hold capacitor through the drive transistor while the drive voltage corresponding to the video signal is written to the hold capacitor through the write transistor.

Description

[0001] Cross References to Related Applications [0002] The present application contains subject matter related to the disclosure of Japanese Priority Patent Application JP 2011-150938 filed in the Japan Patent Office on Jul. 7, 2011, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to a pixel circuit, a display including the pixel circuit, an electronic device including the display, and a driving method of the pixel circuit (display). Background technique [0004] Currently, commonly used displays include pixel circuits (also called "pixels") having display elements (also called "electro-optic elements"), and commonly used electronic devices include the displays. Known displays use, as display elements, electro-optical elements whose brightness varies with applied voltage or current in pixels. For example, a typical representative of an electro-optic element whose luminance varies with an applied volta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32G09G3/3225
CPCG09G3/3225G09G2300/0408G09G2300/0819G09G2300/0861G09G2310/0251G09G2310/0262
Inventor 丰村直史内野胜秀
Owner JOLED INC