Flat display device

A flat display device generating a discharge luminance, comprising:

• a pair of substrates defining a gas discharge space in which a gas used to generate the discharge luminance in sealed;
• display electrodes for discharging the gas between said pair of substrates;
• means for absorbing or reflecting lights having a wavelength in excess of 650 nm;
• and
• a plurality of fluorescent layers with different luminescence colors provided in said gas discharge space, said gas includes at least xenon and neon, and a mixture ratio of xenon in said gas is less than 2%.

A flat display device generating a discharge luminance comprising:

• a pair of substrates defining a gas discharge space in which a gas used to generate the discharge is luminance is sealed;
• and
• display electrodes for discharging the gas between said pair of substrates,
• said gas includes at least xenon and neon, and a mixture ratio of xenon in said gas is less than 2%, and
• wherein transmittance of lights of a wavelength of less than 650 nm is twice or more as high as transmittance of lights of a wavelength of 700 nm.

A flat display panel generating a discharge luminance comprising:

• a pair of substrates defining a gas discharge space in which a gas used to generate discharge luminance is sealed;
• a protection plate arranged at a predetermined distance from said pair of substrates;
• display electrodes discharging the gas between said pair of substrates;
• means for absorbing or reflecting near infrared rays emitted by the generated discharge luminance which is provided on a front substrate of said pair of substrates;
• and
• a casing accommodating said pair of substrates, said protection plate said display electrodes and said means for absorbing or reflecting.

A flat display device comprising:

• a display panel including:
• a pair of substrates defining a gas discharge space in which a gas mixture including at least xenon is sealed, a mixture ratio of said xenon in said gas mixture being equal to or greater than 2% to have a luminous spectrum comprised of near infrared rays;
• and
• a fluorescent body irradiated with ultraviolet rays to emit transparent visible rays said fluorescent body being formed between the pair of substrates;
• and
• means for absorbing or reflecting said near infrared rays and for making said transparent visible rays, provided in front of said display panel.

A flat display device comprising:

• a pair of substrates defining a gas discharge space in which a gas mixture including at least xenon is sealed, a mixture ratio of said xenon in said gas mixture being equal to or greater than 2% to have a peak value of a luminous spectrum in a near infrared ray range;
• a protection plate provided in front of the substrates;
• and
• means for absorbing or reflecting said near infrared rays emitted from said gas mixture, provided on a front surface or a back surface of said protection plate.

A method of protecting against an influence of near infrared rays comprising:

• providing a plasma display panel having a picture display surface, including:
• a pair of substrates defining a gas discharge space in which a gas of a mixture ratio of xenon being at least equal to or greater than 2% is sealed and has a peak emission spectrum value near infrared rays;
• red, blue and green fluorescent layers which are formed between the pair of substrates, said layers being irradiated by a discharge;
• and
• providing means for absorbing or reflecting near infrared rays and for making transparent visible rays in front of the picture display surface of the plasma display panel cut off said near infrared rays which are emitted depending on the mixture ratio of xenon.