Displayer and pixel driving method

A display and pixel technology, applied to static indicators, instruments, etc., can solve the problems of different critical voltage offsets, uneven screen brightness, and not maintaining the same corresponding relationship, etc., to achieve the effect of solving critical voltage offsets

Active Publication Date: 2013-09-11
INNOCOM TECH SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for all pixels on the entire display panel, due to the differences in the conduction time, conduction current and manufacturing process of each thin film transistor 102, the threshold voltages of these driving thin film transistors 102 will be biased. The amount of displacement is different, so that the luminance of each pixel does not maintain the same corresponding relationship with the received pixel voltage
This will cause uneven brightness of the screen

Method used

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  • Displayer and pixel driving method
  • Displayer and pixel driving method
  • Displayer and pixel driving method

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Embodiment Construction

[0058] In order to make the above and other purposes, features, and advantages of the present invention more comprehensible, a preferred embodiment is specifically cited below, together with the accompanying drawings, as follows:

[0059] The following description is of the best mode for carrying out the invention. Those skilled in the art should be able to understand that some modifications, substitutions and substitutions can be made without departing from the spirit and structure of the present invention. The scope of the present invention should be determined by the claims.

[0060] figure 2 It is an embodiment of the pixel driving circuit 200 disclosed herein. Such as figure 2 As shown, the pixel driving circuit 200 is used to generate a driving current Id to a light emitting element ED, so that the light emitting element ED emits light according to the driving current Id. In the disclosed embodiment, the light emitting element ED is an organic light emitting diode ...

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Abstract

The invention provides a displayer and a pixel driving method. The displayer comprises a pixel driving circuit. The pixel driving circuit comprises a first switching element, a second switching element, a third switching element and a fourth switching element. The first switching element comprises a first terminal, a second terminal and a control terminal. The second terminal is connected to a first node and a light-emitting element in a coupled mode, and the control terminal is connected to a second node in a coupled mode. The second switching element comprises a first terminal, a second terminal and a control terminal, wherein the first terminal is connected to a first signal source in a coupled mode, the second terminal is connected to the first terminal of the first switching element in a coupled mode, and the control terminal is connected to a first scanning signal line in a coupled mode. The third switching element comprises a first terminal, a second terminal and a control terminal, wherein the first terminal is connected to a second signal source in a coupled mode, the second terminal is connected to the second node in a coupled mode, and the control terminal is connected to a second scanning signal line in a coupled mode. The fourth switching element comprises a first terminal, a second terminal and a control terminal, wherein the first terminal is connected to a third node in a coupled mode, the second terminal is connected to a grounding terminal in a coupled mode, and the control terminal is connected to the second scanning signal line in a coupled mode.

Description

technical field [0001] The present disclosure relates to a display, in particular to a pixel driving circuit. Background technique [0002] A pixel of an Organic Light Emitting Display (Organic Light Emitting Display) generally uses a thin film transistor (Thin Film Transistor, TFT) with a storage capacitor to store charges to control the brightness of the Organic Light Emitting Diode (OLED). Please refer to figure 1 , which is a schematic diagram of a conventional pixel circuit. The pixel circuit 100 includes an (N-type) thin film transistor 102 , a storage capacitor 104 and an organic light emitting diode 106 as an example for illustration. Both ends of the storage capacitor 104 are connected between the gate G and the source S of the thin film transistor 102 , and the voltage across the capacitor is denoted as Vgs. The anode of the organic light emitting diode 106 is coupled to the source S of the thin film transistor 102 , and its potential is marked as VOLED. The st...

Claims

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Application Information

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IPC IPC(8): G09G3/32G09G3/3258G09G3/3266
Inventor林志隆张文彦洪嘉泽徐圣凯
OwnerINNOCOM TECH SHENZHEN