1. An external electrode fluorescent lamp, comprising: a ferroelectric glass tube filled with discharge gas; and a ferroelectric film on an internal surface of the ferroelectric glass tube.

2. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric glass tube has a dielectric constant of about 10˜20.

3. The external electrode fluorescent lamp according to claim 1, further comprising: external electrodes on an external surface of the ferroelectric glass tube and respectively positioned at ends of the ferroelectric glass tube.

4. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric glass tube includes at least one of Li2O, Na2O, K2O and BaO.

5. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric film has a dielectric constant of about 4˜20.

6. The external electrode fluorescent lamp according to claim 5, wherein the ferroelectric film includes at least one of Barium Titanate (BaTi3), Lithium Niobate (LiNbO3), Gadolinium Molybdate (Gd2(MoO4)3), Antimony Sulphoiodide (SbSI), Sodium Nitrite (NaNO2), Potassium Dihydrogen Phosphate (KH2PO4), Triglycine Sulfate ((NH2CH2COOH)3H2SO4) and Rochelle salt (NaKC4H4O6.4H2O).

7. The external electrode fluorescent lamp according to claim 1, wherein the discharge gas is argon (Ar).

8. The external electrode fluorescent lamp according to claim 1, wherein pressure of the discharge gas is about 5˜45 torr.

9. The external electrode fluorescent lamp according to claim 1, further comprising: metal tubes on the external surface of the ferroelectric glass tube at ends of the ferroelectric glass tube.
10. The external electrode fluorescent lamp according to claim 9, wherein the metal tubes are made of phosphor bronze.
For details,please visit:
http://www.freepatents online.com/70152594.html

Answered by Madhurima , an ibibo Master, at 6:12 PM on June 27, 2008

1. An external electrode fluorescent lamp, comprising: a ferroelectric glass tube filled with discharge gas; and a ferroelectric film on an internal surface of the ferroelectric glass tube.

2. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric glass tube has a dielectric constant of about 10˜20.

3. The external electrode fluorescent lamp according to claim 1, further comprising: external electrodes on an external surface of the ferroelectric glass tube and respectively positioned at ends of the ferroelectric glass tube.

4. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric glass tube includes at least one of Li2O, Na2O, K2O and BaO.

5. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric film has a dielectric constant of about 4˜20.

6. The external electrode fluorescent lamp according to claim 5, wherein the ferroelectric film includes at least one of Barium Titanate (BaTi3), Lithium Niobate (LiNbO3), Gadolinium Molybdate (Gd2(MoO4)3), Antimony Sulphoiodide (SbSI), Sodium Nitrite (NaNO2), Potassium Dihydrogen Phosphate (KH2PO4), Triglycine Sulfate ((NH2CH2COOH)3H2SO4) and Rochelle salt (NaKC4H4O6.4H2O).

7. The external electrode fluorescent lamp according to claim 1, wherein the discharge gas is argon (Ar).

8. The external electrode fluorescent lamp according to claim 1, wherein pressure of the discharge gas is about 5˜45 torr.

9. The external electrode fluorescent lamp according to claim 1, further comprising: metal tubes on the external surface of the ferroelectric glass tube at ends of the ferroelectric glass tube.
10. The external electrode fluorescent lamp according to claim 9, wherein the metal tubes are made of phosphor bronze.
For details,please visit:
http://www.freepatents online.com/70152594.html

Answered by shaista , an ibibo Master, at 9:56 AM on June 04, 2008

1. An external electrode fluorescent lamp, comprising: a ferroelectric glass tube filled with discharge gas; and a ferroelectric film on an internal surface of the ferroelectric glass tube.

2. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric glass tube has a dielectric constant of about 10˜20.

3. The external electrode fluorescent lamp according to claim 1, further comprising: external electrodes on an external surface of the ferroelectric glass tube and respectively positioned at ends of the ferroelectric glass tube.

4. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric glass tube includes at least one of Li2O, Na2O, K2O and BaO.

5. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric film has a dielectric constant of about 4˜20.

6. The external electrode fluorescent lamp according to claim 5, wherein the ferroelectric film includes at least one of Barium Titanate (BaTi3), Lithium Niobate (LiNbO3), Gadolinium Molybdate (Gd2(MoO4)3), Antimony Sulphoiodide (SbSI), Sodium Nitrite (NaNO2), Potassium Dihydrogen Phosphate (KH2PO4), Triglycine Sulfate ((NH2CH2COOH)3H2SO4) and Rochelle salt (NaKC4H4O6.4H2O).

7. The external electrode fluorescent lamp according to claim 1, wherein the discharge gas is argon (Ar).

8. The external electrode fluorescent lamp according to claim 1, wherein pressure of the discharge gas is about 5˜45 torr.

9. The external electrode fluorescent lamp according to claim 1, further comprising: metal tubes on the external surface of the ferroelectric glass tube at ends of the ferroelectric glass tube.
10. The external electrode fluorescent lamp according to claim 9, wherein the metal tubes are made of phosphor bronze.
For details,please visit:
http://www.freepatents online.com/70152594.html

Answered by Anju Singh , an ibibo Master, at 5:28 AM on June 04, 2008

quality of light. effective more /less

Answered by banish , an ibibo Specialist, at 9:34 PM on June 03, 2008

well ankit
1. An external electrode fluorescent lamp, comprising: a ferroelectric glass tube filled with discharge gas; and a ferroelectric film on an internal surface of the ferroelectric glass tube.

2. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric glass tube has a dielectric constant of about 10˜20.

3. The external electrode fluorescent lamp according to claim 1, further comprising: external electrodes on an external surface of the ferroelectric glass tube and respectively positioned at ends of the ferroelectric glass tube.

4. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric glass tube includes at least one of Li2O, Na2O, K2O and BaO.

5. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric film has a dielectric constant of about 4˜20.

6. The external electrode fluorescent lamp according to claim 5, wherein the ferroelectric film includes at least one of Barium Titanate (BaTi3), Lithium Niobate (LiNbO3), Gadolinium Molybdate (Gd2(MoO4)3), Antimony Sulphoiodide (SbSI), Sodium Nitrite (NaNO2), Potassium Dihydrogen Phosphate (KH2PO4), Triglycine Sulfate ((NH2CH2COOH)3H2SO4) and Rochelle salt (NaKC4H4O6.4H2O).

7. The external electrode fluorescent lamp according to claim 1, wherein the discharge gas is argon (Ar).

8. The external electrode fluorescent lamp according to claim 1, wherein pressure of the discharge gas is about 5˜45 torr.

9. The external electrode fluorescent lamp according to claim 1, further comprising: metal tubes on the external surface of the ferroelectric glass tube at ends of the ferroelectric glass tube.
10. The external electrode fluorescent lamp according to claim 9, wherein the metal tubes are made of phosphor bronze.
For details,please visit:
http://www.freepatents online.com/70152594.html

Answered by Ram Singh , an ibibo Master, at 6:55 AM on June 03, 2008

well ankit
1. An external electrode fluorescent lamp, comprising: a ferroelectric glass tube filled with discharge gas; and a ferroelectric film on an internal surface of the ferroelectric glass tube.

2. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric glass tube has a dielectric constant of about 10˜20.

3. The external electrode fluorescent lamp according to claim 1, further comprising: external electrodes on an external surface of the ferroelectric glass tube and respectively positioned at ends of the ferroelectric glass tube.

4. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric glass tube includes at least one of Li2O, Na2O, K2O and BaO.

5. The external electrode fluorescent lamp according to claim 1, wherein the ferroelectric film has a dielectric constant of about 4˜20.

6. The external electrode fluorescent lamp according to claim 5, wherein the ferroelectric film includes at least one of Barium Titanate (BaTi3), Lithium Niobate (LiNbO3), Gadolinium Molybdate (Gd2(MoO4)3), Antimony Sulphoiodide (SbSI), Sodium Nitrite (NaNO2), Potassium Dihydrogen Phosphate (KH2PO4), Triglycine Sulfate ((NH2CH2COOH)3H2SO4) and Rochelle salt (NaKC4H4O6.4H2O).

7. The external electrode fluorescent lamp according to claim 1, wherein the discharge gas is argon (Ar).

8. The external electrode fluorescent lamp according to claim 1, wherein pressure of the discharge gas is about 5˜45 torr.

9. The external electrode fluorescent lamp according to claim 1, further comprising: metal tubes on the external surface of the ferroelectric glass tube at ends of the ferroelectric glass tube.
10. The external electrode fluorescent lamp according to claim 9, wherein the metal tubes are made of phosphor bronze.
For details,please visit:
http://www.freepatents online.com/70152594.html

Answered by jaivir , an ibibo Master, at 7:32 AM on June 02, 2008

Internal backlight uses Transmissive LCD Visibility technology which is the opposite of reflective visibility. It relies on the positioning of a light source behind the LCD panel. This method projects light colored objects against a dark background. This technique in turn produces a sharper, and more contrasted image. This is also known as negative mode broadcasting. Whereas 'External backlight' relies on Reflective LCD Visibility technology where the LCD display relies on an external light source from in front for visibility. The ambient light enters the front of the display, and is controlled by a diffuser.

The advantages of 'Electroluminescent Lamp (EL)' type of light source are that the backlight is extremely thin and that they have a relatively low cost compared with other sources. Unfortunately, the Electroluminescent Lamp does not perform well in highly humid conditions, which rules it out completely for some un-conditioned climates. In high humidity, the unit delaminates and begins to malfunction. Additionally, this type of backlight requires that DC power be converted to AC power, and thus, needs a unit called an inverter. Whereas The Cold Cathode Fluorescent Lamp offers a bright white light that is uniform throughout. The drawback of this technology is that it also requires DC power to be converted to AC power, and thus, needs a unit called an inverter.

Answered by A.R.Karthick , an ibibo Master, at 7:06 AM on June 02, 2008