Active matrix type display device and driving method thereof

A display device, active matrix technology, applied in static indicators, instruments, etc., can solve the problem of the organic EL component 216 being extinguished, and achieve the effects of improving display image quality, suppressing bad bright spots, and suppressing afterimages

Active Publication Date: 2010-06-30
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, when the TFT 214 for driving becomes non-conductive in response to the display signal D supplied to the gate, since no current flows through the TFT 214 for driving, the organic EL element 216 is turned off.

Method used

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  • Active matrix type display device and driving method thereof
  • Active matrix type display device and driving method thereof
  • Active matrix type display device and driving method thereof

Examples

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Embodiment Construction

[0060] Next, an active matrix organic EL display device and a driving method thereof according to a first embodiment of the present invention will be described with reference to the drawings. figure 1 It is an equivalent circuit diagram of the organic EL display device according to this example. figure 1 Only one display pixel 210A among several pixels arranged in a matrix on the display panel is shown. figure 1 in, with Figure 11 The same components are assigned the same reference numerals and their descriptions are omitted.

[0061] Such as figure 1 As shown, this organic EL display device includes: a storage capacitor line potential switching circuit 101 connected to a storage capacitor line 217 of a display pixel 210A. The storage capacitance line potential switching circuit 101 switches the potential of the storage capacitance line 217 from the first potential Vsc1 to the second potential Vsc2 higher than the first potential Vsc1, makes the TFT 214 for driving non-...

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Abstract

A storage capacitor line potential switching circuit 101 switches potential of a storage capacitor line 217 from first potential Vsc1 to second potential Vsc2 higher than the first potential Vsc1, and at the same time, a power source potential switching circuit 102 switches potential of a power source line 215 from first power source potential PVdd1 to second power source potential PVdd2 lower than the first power source potential PVdd1. By a synergistic effect of them, gate potential Vg of a TFT 214 for drive becomes higher than threshold Vtp to its source potential. If a positive hole is trapped to a gate insulating film of the TFT 214 for drive by writing of a display signal D in the previous time, the positive hole is extracted from the gate insulating film to a source or a drain. Thus, electronic characteristics of the TFT 214 for drive are initialized.

Description

[0001] This application is a divisional application with the application number 200610058183.8, the application date is March 10, 2006, and the invention name is "active matrix display device and its driving method". technical field [0002] The present invention relates to an active matrix type display device and a driving method thereof. Background technique [0003] In recent years, an organic EL display device using an organic electroluminescence device (Organic Electro Luminescence Device: hereinafter abbreviated as [organic EL device]) to replace the CRT and LCD display devices has been developed. In particular, an active matrix organic EL display device having a thin film transistor (Thin Film Transistor: hereinafter abbreviated as [TFT]) as a switching element driven as an organic EL element has been developed. [0004] Hereinafter, an active matrix organic EL display device will be described with reference to the drawings. Figure 11 An equivalent circuit diagram of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G2310/0251G09G2300/043G09G2300/0866G09G3/3233G09G2300/0819G09G3/20G09G3/30
Inventor 小川隆司
Owner SANYO ELECTRIC CO LTD
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