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Method for driving ferroelectric panel display device

A technology for flat panel displays, driving methods, applied in the direction of static indicators, instruments, etc.

Inactive Publication Date: 2007-11-28
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although existing documents (US Patent No. 5,453,661, issued in 1995 and US Patent No. 5,508,590, issued in 1996) proposed to use ferroelectric materials to emit electrons to realize flat panel display, only the light-emitting array structure is given, how to realize pixel-finding URL and grayscale display have not been reported yet

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  • Method for driving ferroelectric panel display device
  • Method for driving ferroelectric panel display device
  • Method for driving ferroelectric panel display device

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Embodiment Construction

[0020] Accompanying drawing is the specific embodiment of the present invention.

[0021] The content of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Referring to Fig. 1, it is the principle of electron emission of ferroelectric thin film in the display unit of ferroelectric flat panel display. Before addressing, the polarization direction of the ferroelectric thin film 150 of the display unit is downward. According to the display data during addressing, if the display unit needs to emit light, an addressing voltage is applied between the address electrode 140 and the scan electrode 160, so that the polarization direction of the ferroelectric film 150 is reversed; if no light emission is required, no addressing voltage is applied. The address voltage does not change the polarization direction. When displaying, apply a positive polarization voltage to reverse the polarization direction of the ferroelectric fil...

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Abstract

A method for driving ferroelectric display. It divides a field image to be a numbers of subfields and each subfield contains an addressing period and a display period. The subfield is operated in mode of addressing along while playing as the reverse polarization is carried out at addressed unit by exerting different addressing voltage for emitting electronic beam of different current intensity to excite fluorescent powder to generate visible light of different intensity, but the polarizational direction of unaddressed unit remains unchanged and no light is generated there.

Description

technical field [0001] The invention relates to a driving method of a flat panel display, in particular to a driving method capable of realizing addressing and gray scale display of a ferroelectric flat panel display. Background technique [0002] The electron emission phenomenon of ferroelectric thin film cathodes has been extensively studied in recent years. Different from the cold cathode field electron emission, the ferroelectric thin film cathode repels the compensation electrons on the surface through the polarization reversal inside the film, and can emit electrons without the extraction voltage. It is a new type of low voltage electron emitting material. In order to reduce costs and facilitate mass production, it is expected that flat panel display devices can operate at the voltage level of integrated circuit devices, ie, from a few volts to 100 volts. In 1995, O.Auciello and others in the United States found experimentally (Applied Physics Letters, volume 66, per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20
Inventor 刘纯亮刘祖军李永东梁志虎宋志棠
Owner XI AN JIAOTONG UNIV