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Pixel circuit and active matrix organic light-emitting display

A pixel circuit and organic technology, applied in the field of flat panel display, can solve the problems of high power consumption and low pixel aperture ratio, and achieve the effects of low power consumption, improved resolution and easy resolution

Inactive Publication Date: 2015-04-29
KUNSHAN NEW FLAT PANEL DISPLAY TECH CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The object of the present invention is to provide a pixel circuit and an active matrix organic light emitting display to solve the problems of high power consumption and low pixel aperture ratio of the existing active matrix organic light emitting display

Method used

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Embodiment Construction

[0024] A pixel circuit and an active-matrix organic light-emitting display provided by the present invention will be further described in detail below with reference to the drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0025] Please refer to figure 2 , which is a schematic structural diagram of a pixel circuit according to an embodiment of the present invention. Such as figure 2 As shown, the pixel circuit 20 includes: a first thin film transistor T1 and a second thin film transistor T2; the gate of the first thin film transistor T1 is connected to the scanning line Sn, and the scanning line Sn is used to provide a pulse width modulation signal (PWM), the gate...

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Abstract

The invention relates to a pixel circuit and an active matrix organic light-emitting display. The pixel circuit comprises a first thin film transistor and a second thin film transistor. The grid of the first thin film transistor is connected with a scanning line which is used for providing a pulse width modulation signal, the grid of the second thin film transistor is connected with the drain of the first thin film transistor, and the switch-on time and switch-off time of the second thin film transistor are controlled by the pulse width modulation signal. According to the pixel circuit and the active matrix organic light-emitting display, pixels are digitally driven to emit light, namely, rapid switch-on and switch-off of the second thin film transistor are controlled by the pulse width modulation signal so as to modulate the duty ratio of the pulse width modulation signal, and therefore display of full-color images can be achieved; it is unnecessary to arrange a capacitor in the pixel circuit, so that the structure is simpler, and the power consumption is lower; furthermore, no capacitor influences the aperture ratio of the pixels, so that the active matrix organic light-emitting display has higher brightness, and the resolution ratio is easier to increase.

Description

technical field [0001] The invention relates to the technical field of flat panel display, in particular to a pixel circuit and an active matrix organic light emitting display. Background technique [0002] Active Matrix Organic Light Emitting Display (English full name Active Matrix Organic Lighting Emitting Display, referred to as AMOLED) can emit light by itself, unlike Thin Film Transistor Liquid Crystal Display (English full name Thin Film Transistor liquid crystal display, referred to as TFT-LCD) requires a backlight system (backlight system) ) to light up, so the visibility and brightness are higher, and it is thinner and lighter. At present, active matrix organic light-emitting displays are hailed as a new generation of displays that can replace thin-film transistor liquid crystal displays. [0003] Please refer to figure 1 , which is a circuit diagram of a pixel of an active matrix organic light emitting display in the prior art. Such as figure 1 As shown, each ...

Claims

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Application Information

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IPC IPC(8): G09G3/32G09G3/3225
Inventor 朱晖张婷婷胡思明张小宝刘周英黄秀颀
Owner KUNSHAN NEW FLAT PANEL DISPLAY TECH CENT
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