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Low-temp. polysilicon plane displaying panel

A low-temperature polysilicon and flat-panel display technology, applied to static indicators, instruments, electrical components, etc., can solve the problem that the pixel voltage Vpixel cannot be discharged immediately

Inactive Publication Date: 2006-08-09
TPO DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cause of the image sticking phenomenon as mentioned above is that the threshold voltage (Threshold Voltage) of the NMOS thin film transistor is greater than 0 volts the same as that of the driving circuit, so when the gate drive signal Vg becomes 0 volts, it is turned off. NMOS thin film transistors, so that the pixel voltage Vpixel cannot be discharged immediately

Method used

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  • Low-temp. polysilicon plane displaying panel
  • Low-temp. polysilicon plane displaying panel
  • Low-temp. polysilicon plane displaying panel

Examples

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Embodiment Construction

[0028] Please refer to image 3 , which shows a schematic diagram of a low-temperature polysilicon flat display panel according to the first embodiment of the present invention, wherein the pixel circuit diagram 10 represented only represents one of the pixels in the low-temperature polysilicon display panel. The drive circuit 20 is connected to the pixel circuit 10 . The pixel circuit 10 includes an NMOS thin film transistor 11 , a display pixel 12 , and a capacitor 13 . The driving circuit 20 connects the gate driving signal Vg to the gate terminal of the NMOS thin film transistor 11 , and the data signal Vdata is connected to the drain terminal of the NMOS thin film transistor 11 . The display pixel 12 and the capacitor 13 are connected to the source terminal of the NMOS thin film transistor 11 , and the pixel voltage Vpixel controls the change of the light and dark colors of the display pixel 12 .

[0029] The driving circuit 20 sends a gate driving signal Vg to drive th...

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Abstract

The present invention relates to a low-temperature polycrystalline silicon plane display panel, including a pixel circuit and a driving circuit. said pixel circuit has several NMOS film transistors, and the threshold voltage of the described NMOS film transistor is below zero volt, and when said panel is powered off abnormally, the pixel circuit still can discharge normally, so that it can overcome the problem of residual image of display panel.

Description

technical field [0001] The present invention relates to a flat display panel, and in particular to a low temperature polysilicon (LawTemperature Poly Silicon, LTPS) flat display panel. Background technique [0002] The information and communication industry has become the mainstream industry today, especially the development of various portable communication and display products, which of course also includes flat display panels. The technologies currently applied to flat display panels mainly include the following: plasma display panel (Plasma Display Panel, PDP), liquid crystal display panel (Liquid Crystal Display, LCD), inorganic electroluminescent display panel (Electro-luminescent Display), luminescence Light Emitting Diode Display, Vacuum Fluorescent Display, Field Emission Display (FED), Electro-chromic Display, etc. However, compared with other flat-panel display technologies, low-temperature polysilicon flat-panel display panels have great application potential du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F9/30H01L29/78G09G3/00
Inventor 林孝义黄绣琪
Owner TPO DISPLAY
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