TWM249201U - Flat cold cathode fluorescent lamp - Google Patents

Description

M249201 V. Creation Description (l) [Technical Field to which the New Type belongs] This creation is about a cold cathode camping lamp, especially a flat cold cathode fluorescent lamp. [Previous Technology] Cold Cathode Fluorescent Lamp (CCFL, Cold Cathode Fluorescent

Because of its high luminous intensity, uniform light emission, the lamp can be made extremely thin and can be made into various shapes, it has been widely used in liquid crystal displays, scanners and other fields. As shown in the first figure, a conventional cold cathode fluorescent lamp tube includes a glass shell 32, a calender layer 33 coated on the inner wall of the glass shell, a gas enclosed in the tube (such as a neon-argon mixed gas and mercury vapor), and Electric pole 35 at the end of the tube. By applying a high voltage to the two electrodes 35 of the lamp, the electrons are emitted from the electrode terminal. The electrons collide with the mercury particles in the tube due to the acceleration by the high voltage. After being impacted, the mercury particles obtain sufficient energy and will transition to higher energy excitation. The excited state is usually unstable. When the mercury particles return to the stable state from the excited state rapidly, the excess energy is released by ultraviolet rays (wavelength of 2 5 3 · 7 nm), and the released ultraviolet rays are emitted by the fluorescent layer 33 Absorption is converted into visible light. ~ However, the above cold cathode fluorescent lamp is a linear light source. To obtain a flat light source, it is necessary to conduct light through a light guide plate, a diffusion sheet, or a diffusion plate. Not only is the structure more complicated, but also due to absorption, reflectance, and light leakage However, the light generated by all light sources cannot be completely transmitted to the required plane, resulting in a lower brightness of the plane light source. In recent years. With the increasing use of cold cathode fluorescent lamps in LCD backlights, the demand for cold cathode planar light sources is increasing

M249201 V. Creation Instructions (2) Xi. Mainland China Patent No. 912882727, “Flat-Cold Cathode Fluorescent Lamp”, filed on July 12, 1991, discloses a cold-cathode planar light source, as shown in the second figure, which includes a pair of glass plates 42 filled with The discharge gas and mercury = vapor, and further includes a fluorescent layer 43 formed on a glass plate 42 and electrodes 45 disposed at both ends of the spotlight. Among them, between the glass plate 42 and the fluorescent layer 43 is formed The anti-reflection coating 44 is provided on another glass plate 42. The cold-cathode fluorescent tube does not need to install a reflection plate and a scattering plate to allow visible light to be emitted in the same direction, thereby improving the illumination. However, the electrodes of the above-mentioned cold-cathode flat fluorescent lamps use traditional wire electrodes. Due to the rough processing method of traditional electrode manufacturing, the surface of the cathode electrode used as the emitter electrode is uneven, and singular points are easily generated. The electrons cause the positive charges in the cavity to accumulate in the vicinity of the "Qili" on the surface of the cathode electrode, thereby reducing the & :: rate of the singular point emission on the cathode electrode surface, so the so-called light jitter problem will also occur, which will also reduce ^ The brightness uniformity of the lamp. In addition, the traditional electrode material is generally nickel. * The electrode cannot bear large lamp currents and strong electron currents during operation. Second, the working current of the above fluorescent lamps is generally low, and the working life will be greatly reduced. With the development of liquid crystal displays, the use of battery drives such as portable liquid crystal displays, digital still cameras (DVCs), and notebook computers is expanding. Applications of liquid crystal display light sources, such as cold cathodes, are required to further increase efficiency. 2. Reduce power consumption to meet its development needs. "In light of this, it is necessary to provide a flat-type cold-cathode fluorescent lamp with high electron emission efficiency, small start-up ink, and uniform luminous brightness", ""

M249201 Technical problem: If the dynamic voltage is low, the original cavity is sealed. The two glass plates and one fluorescent layer are located on the cold support. The electrons are emitted perpendicular to the other and the fluorescent film is formed. When a reflective film is required, It can reduce the light loss, and it can be further described in V. Creation (3) [Content] To solve a kind of flat-type cold fluorescent lamp with electron emission, its plate, and an inner wall with discharge gas; two braces Inside the body, an electron emission meter, wherein the electricity is substantially equal to each other. The two glass fluorescent tubes are formed as a light layer on a glass plate to form a resistance. When the electrode is formed, the polarities of the two electrodes of the fluorescent lamp are used as the emitting surfaces of the two electrodes. The prior art has high efficiency and Qiyin r-polar fluorescent lamps. The purpose of this creation includes: a dense support is arranged between the water and the gas; the electrode is divided into 1 parallel to this surface 'and form a row of sub-emission surfaces, and the inner wall of the basic glass plate emits light on both sides; multiple nano-carbons emit electrons to form multiple nano-electrodes, and this fluorescent plate-type cold cathode only needs to fluoresce the other opposite glass. The illuminating tube of the plate lamp is on the cathode of an electrode. However, the meter carbon tube and the light lamp can work normally at this time. The original power consumption operation is provided. The purpose of the single-sided operation is when the cathode electrode is at least one emitting surface opposite to the electron emitting layer. Provides a small and uniform luminous brightness. A flat-type cold cathode is inserted into a parallel glass cavity. One glass plate is inserted at both ends. One nano tube is broken. Two nano carbon tubes are sealed to each other. When the phase electrode enters a complex number, the re-emission surface can be used to raise the fluorescein emission surface in the fluorescent layer at all times, and the voltage can be applied to the two electrodes at will, without having to distinguish between them.

Page 7 Compared with the prior art, the type of cold cathode has the following advantages: 12 k for nano-tube-based flat-tube Nano tube (CNT) has excellent performance, because of the surface of carbon nanotube No. 2 > Electricity: Energy 'and it has almost close concentration), so the smaller the carbon nanotube, the more localized electric field, the more efficient the electron emission efficiency of the fluorescent lamp is, and the emitter's end can effectively improve the unevenness of the surface of the cold cathode. Straighten the electrodes and arrange them in the same direction. • Due to the absence of electrodes, the two ECGs can transmit up to two ::? Cold cathode fluorescent lamps have extremely low power consumption. L-M, M-mode] I will explain this creation in detail with reference to the drawings. Take a look: and read the third and fourth figures, the first embodiment of the present invention provides a flat cold cathode fluorescent lamp 10, which includes: a sealed cavity u, = sealed cavity 丨 丨 including two parallel to each other The glass plate 12 and a support body i4 ° and ^ =, between the glass plates 12, the sealed cavity 11 is filled with a discharge gas and water gas; a fluorescent layer 丨 3, the fluorescent layer 丨 3 is formed On the inner wall of at least one glass plate 12, a cathode electrode 15a and an anode electrode 15b are respectively disposed inside the opposite branch body 14 in the sealed cavity 11 and parallel to the support body 1 $, and the cathode electrode 15a is further It includes an electron emission surface 18 and a plurality of nano carbon tubes 16 formed on the electron emission surface 18. The distance between the two glass plates 12 is less than or equal to 1 mm. The vacuum degree in the sealed cavity 11 is 3 to 200 torr. Discharge gas in sealed cavity η

M249201

Ershifang 5, Argon, Krypton, Krypton and their mixed gases, Ben "m: Charcoal gas. The material of the electrode is nickel. Compound ^ ^ ^ ^ ^ Earth is flat, and is basically perpendicular to the cathode electrode 15a ^ ^ 3 ^ 40 ^ ρ, ^ Shows that the south degree of the stone is 100 micrometers, the straight horse is 40 nanometers, and the distance is 100 nanometers. = Flat-type cold cathode fluorescent lamp i 〇 Applying an electric%: = the electrons will be emitted from the electron emission surface 18 formed on the cathode electrode 15a, i = emitted, the emitted electrons collide with the argon 1 in the sealed cavity 11 and the vapor collection, and the mercury particles will After getting enough energy, it will jump to the excited state with higher energy. The excited state is usually unstable. When the mercury particles return from the excited state to the stable state rapidly, the excess energy will be converted to ultraviolet (wavelength of 253 · 7). Nanometers) are released, and the released ultraviolet rays are absorbed and converted into visible light by the fluorescent layer 13. "In this embodiment, when a fluorescent layer is formed on the inner walls of the two glass plates, the flat-type cold cathode fluorescent lamp emits light on both sides; And when it is required to emit light on one side, A glass layer is formed on the inner wall can be any. In addition, the cold-cathode fluorescent lamp 10 can also be provided with an electron emission surface 18 'on the anode electrode 15b, thereby forming a plurality of carbon nanotubes 16, and an electron emission surface 18' on the anode electrode 15b. The flat-type cold-cathode fluorescent lamp 10 can work normally by applying a voltage to both electrodes without having to distinguish the polarity of the electrodes. Please refer to the fifth figure. The second embodiment of the present invention provides a flat-plate cold cathode fluorescent lamp 20, which includes: a sealed cavity 21 including two parallel glass plates 22 and a support body. 24 set in two glasses

M249201 V. Creation instructions (6) ~ 'Between the plate 2 2, the sealed cavity 2 丨 is filled with discharge gas and mercury vapor; a fluorescent layer 23, which is formed on at least one broken glass plate 22 An inner wall; a reflective layer 27, which is formed on the inner wall of another glazed plate relative to the glory and sound 23;-a cathode electrode 25a and an anode electrode t; b are provided separately from the inside of the sealed cavity 21 and opposite Inside the supporting body 24 and parallel to the supporting body 24, the cathode electrode 25a further includes an electron emission surface 28, and a plurality of carbon nanotubes 26 formed on the electron emission surface 28. The distance between the two glass plates 22 is less than or equal to 1 mm. The vacuum degree in the sealed cavity makeup 21 is 3 to 200 torr. The discharge gas in the sealed cavity 21 may be selected from the group consisting of helium, neon, argon, krypton, xenon, and mixtures thereof. In this embodiment, argon is used as the discharge gas. The material of the electrode is nickel. The plurality of carbon nanotubes 26 are substantially parallel to each other, and are substantially perpendicular to the electron emission surface 28 of the cathode electrode 25a. The height of the carbon nanotubes is 100 microns, the diameter is 3 to 40 nm, and the pitch is 10 〇nm. Due to the formation of a reflective layer 27, the ultraviolet rays generated by the electron collision excited mercury vapor are reflected on the fluorescent layer 23 via the reflective layer 27, so that the fluorescent layer 23 emits light, and visible light is concentrated on the glass plate on which the fluorescent layer 23 is formed. ; ^ The plate-type cold cathode fluorescent lamp only emits on one side. In addition, it can further add an anti-reflection layer (not shown) between the fluorescent layer 23 and the glass plate, which can increase the illumination of the fluorescent lamp by 22 ° of light. Similarly, the cold cathode fluorescent lamp 20 can also be provided with an electron emission surface 28 'on the anode electrode 25b, thereby forming a plurality of carbon nanotubes "on the electron emission surface 28 of the anode emperor 25b." Then just apply-the voltage package on the two electrodes can make the flat cold cathode fluorescent lamp 20 work normally, without

Page 10 M249201 Creative Instructions (7) The polarity of its electrodes must be distinguished. Those skilled in the art should understand that the electrodes of the flat-type cold-cathode camping light of this creation may have other different shapes, such as a u-shape, and it is only necessary to ensure that the electrodes have an electron-emitting surface for forming a carbon nanotube for electron emission i%, which can effectively increase the efficiency of electron emission and reduce power consumption. The flat-type cold-cathode fluorescent lamp of this creative design can be widely used in backlights of displays such as mobile phones, digital PDAs, and computers. In summary, this creation complies with the patent application. However, those who are familiar with the skills of this case, in the modification or change, should be included in the requirements of the new patent, according to the law to propose only the preferred embodiment of this creation, and to assist in the spirit of the creation of this case, etc. Effective patent application scope. , ≫

Page 11 M249201 Schematic description [Schematic description] Schematic diagram of the cold cathode fluorescent lamp tube of the conventional technology. The second figure is a schematic diagram of a flat cold cathode fluorescent lamp of the conventional technology.

^ Figure is a schematic diagram of the first embodiment of the present invention. ^ 7C figure. The head is the A-A cross section of the flat-type cold cathode fluorescent lamp in the first picture. The fifth picture is a cross-sectional diagram of the creative fan-Xing. Flat-type cold-cathode fluorescent lamp in the sealed-cathode method, the sealed cavity, the fluorescent layer, the cathode electrode, the carbon nanotube 16, and the reflective layer [the main component symbols indicate the cold cathode. Fluorescent lamps 11, 21 13, 23 15a, 25a 16 ,, 2 6, 2 6, 27 12, 22 14, 24 electron emission surface 丨 i5b, 25b unload 18, 18, 28, 28, glass plate 1 〇 '2 0 support anode electrode

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Claims (1)

M249201 6. Scope of patent application 1. A flat-type cold-cathode fluorescent lamp, comprising: a sealed cavity including two glass plates parallel to each other, and a support disposed between the two glass plates, the sealed cavity Heart gas and mercury vapor are injected therein; there is a hostile fluorescent layer formed on the inner wall of at least one glass plate; and two electrodes are respectively located inside the cold cathode fluorescent inner support, and at least one electrode further includes an electron A plurality of carbon nanotubes are formed and formed on the surface, wherein the sub-emission surface is opposite to another electrode, the plurality of carbon nanotubes are substantially parallel to each other and are substantially perpendicular to the electron emission surface. 2. The flat-type cold-cathode fluorescent lamp according to item 丨 in the scope of the patent application, wherein the vent gas is selected from the group consisting of helium, neon, argon, krypton, xenon, and a mixture thereof. 3. The flat-type cold-cathode fluorescent lamp according to item 1 of the scope of the patent application, wherein the vacuum degree in the sealed cavity is 3 to 200 torr. 4. The flat-type cold-cathode fluorescent lamp as described in item 1 of the scope of patent application, wherein the distance between the two broken glass plates is less than or equal to 1 mm. 5 · The flat-type cold-cathode fluorescent lamp as described in item 1 of the scope of patent application, wherein the electrode may be in a sheet shape or a U-shape. M249201 6. Scope of patent application 6 · The flat cold cathode fluorescent lamp as described in item 1 of the scope of patent application, in which the material of the electrode is nickel. 7. The flat-type cold-cathode fluorescent lamp as described in item 1 of the scope of the patent application, wherein the height of the carbon nanotube is 100 microns, the diameter is 3 to 40 nm, and the pitch is 100 nm. . 8 · A flat-type cold cathode fluorescent lamp, comprising: a sealed cavity including two glass plates parallel to each other, and a support disposed between the two glass plates, and a discharge gas is injected into the sealed cavity And mercury vapor; a fluorescent layer formed on the inner wall of a glass plate; a reflective layer formed on the inner wall of another glass plate opposite to the fluorescent layer; and two electrodes, which are respectively located on the cold cathode fluorescent At least one electrode further includes an electron emission surface and a plurality of carbon nanotubes formed on the inner surface of the opposite supporting body in the light lamp, wherein the electron emission surface is opposite to the other electrode, and the plurality of carbon nanotubes are substantially mutually Parallel and substantially perpendicular to the electron emission surface. 9. The flat-type cold-cathode fluorescent lamp as described in item 8 of the scope of patent application, the vacuum degree in the sealed cavity in the basin is 3 ~ 200 t〇rr. ’, 丄 v 丄 厶 叶 y / u 丄 Middle two glasses; the distance between _ is less than or equal to 1 mm. Π · As described in the application of the exclusive interest > The flat-type cold cathode fluorescent lamp described in item 8 above, whose mixture is selected from helium, neon, argon, krypton, xenon and 12. In the scope of the patent, the electrode may be a flat-type cold-cathode fluorescent lamp as described in item 8 of the sheet, and the sheet is large or U-shaped. 13. The flat-plate cold-cathode fluorescent lamp described in item 8 of the patent application scope, which is nickel. 14. The flat-type cold-cathode fluorescent lamp according to item 8 of the scope of the patent application, wherein the height of the carbon nanotube is 100 microns, the diameter is 3 to 40 nm, and the pitch is 100 nm. 15. The flat-type cold-cathode fluorescent lamp according to item 8 of the scope of the patent application, wherein the flat-type cold-cathode fluorescent lamp further includes an anti-reflection layer formed between the fluorescent layer and the glass plate. 1 6. A cold cathode fluorescent lamp comprising: a sealed cavity in which a discharge gas and mercury vapor are injected, a fluorescent layer formed on an inner wall of the sealed cavity; and M249201 6. Patent application scope Two electrodes, which are respectively disposed on two opposite inner walls of the fluorescent lamp adjacent to the fluorescent layer. At least one electrode includes a surface and a carbon nanotube formed on the surface, wherein the surface and the other An electrode is opposed to each other, and the plurality of nanometers are substantially parallel to each other and substantially perpendicular to the electrode surface. Page 16