TWI360149B - Flat light source and electrode structure thereof - Google Patents

Description

1360149 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a light source and an electrode front surface light source thereof and an electrode structure thereof. Especially about a kind of flat after October 19, 100

[0002] [0003] [0005] [096] .096132413 [Prior Art] In recent years, the display screen of television has gradually become a liquid crystal display panel (lcdqing _ (1) is the mainstream. Since the liquid crystal _ panel itself does not have the work of illuminating f·; Therefore, under the LCD display panel, the backlight module (baCk-llght-le) is provided to provide the aperture to achieve the display function. The higher the size of the liquid crystal display panel is, the higher the reading is required. "The light of the plane back light group is light. The light source of the plane light source belongs to the plane light source Lamp, FFL) is a type of electric light ray = Flat fluorescent efficiency and uniformity, can meet the backlight 榲: has a good The requirement of light uniformity for the luminescent group. The planar fluorescent lamp system mainly utilizes the dielectric layer discharge principle to generate a collision between the secondary electron 'and the inert gas in the gas discharge chamber, - part of the gas ionization, and a part of the filament-shaped atom. When the atomic radiation returns to the ground state, the emitted ultraviolet light will inject the phosphor of the planar fluorescent lamp to produce visible light. Referring to Fig. 1, a conventional planar fluorescent lamp has a structure including a first substrate 11, a second substrate 12, a gas discharge chamber 13, and an electrode layer 14. The first substrate has a first phosphor layer (1), and the second substrate 12 has a second phosphor layer 121 opposite to the first phosphor layer U1. The second substrate 12 has a reflective layer 122 disposed between the second substrate 12 and the second phosphor layer 121. The gas chamber 13 is sandwiched between the first and second forms of the form A0101, page 3 / page 18, 1003384235- 0 1360149 _._— loo year. On October 19, the shuttle is replacing between the π-light layer 111 and the second phosphor layer 121, and is filled with an inert gas. In addition, at least one support post 15 is disposed between the first substrate 11 and the second substrate 12. The electrode layer 14 includes at least a pair of electrodes 14a and 14b, and the glass paste containing the metal material is screen-printed on the second substrate 12 by vapor deposition, and the dielectric layer 16 is covered by the dielectric layer 16. Thought of protection

[0006] In the lighting process of the planar fluorescent lamp, the electrons emitted from the pair of electrodes 14a and 14b are mainly collided with the inert gas inside the gas discharge chamber 13, and the inert gas is ionized or excited to form a plasma. . Thereafter, the excited excited atoms in the plasma return to the ground state by emitting ultraviolet light, and the emitted ultraviolet light further excites the first phosphor layer 111 and the second phosphor layer 121 to generate visible light. [0007] However, the electrode layer 14 of the conventional planar fluorescent lamp has a layered structure, and the electrode pattern lines are thinner, not only the area where the discharge can be discharged is limited, but also the electrode layer 14 generates heat quickly, resulting in its connection with the second substrate 12. The joint is prone to cracks. On the other hand, the glass paste containing metal materials, the process of screen printing is easy to produce multi-porosity, which causes an increase in resistance value and a hygroscopic phenomenon to reduce the service life β [0008] Therefore, how to provide a planar light source and The electrode structure makes the planar light source improve the discharge efficiency of the electrode, homogenizes the luminescence, and increases the heat dissipation function of the electrode, which is one of the current important topics. SUMMARY OF THE INVENTION [0009] In view of the above problems, the object of the present invention is to provide a planar light source and its electrode structure, by changing the electrode structure to enhance the uniform effect of light emission, improve electrode discharge efficiency, increase the heat dissipation function of the electrode, and Reduced work 096132413 Form number Α 0101 Page 4 of 18 1003384235-0 1360149 October 19, 100, according to the positive replacement page rate loss. [0010] The edge is that, in order to achieve the above object, according to the electrode structure of the planar light source of the present invention, the planar light source sequentially has a first substrate, a gas discharge chamber and a second substrate. The first substrate has a first phosphor layer, and the second substrate has a second phosphor layer opposite to the first phosphor layer. The gas discharge chamber is located between the first phosphor layer and the second phosphor layer and is filled with an inert gas

. The electrode structure is disposed in the gas discharge chamber and includes at least one pair of electrode tubes, each electrode tube includes an insulating tube body and a conductive solution, and the conductive solution is housed in the insulating tube body. [0011] As described above, a planar light source and an electrode structure thereof according to the present invention are formed by accommodating a conductive solution in an insulating tube and changing the shape of the pair of electrodes to form a conductive electrode of a planar light source. Compared with the prior art, the electrode structure of the present invention can increase the discharge area of the electrode and the discharge gas, improve the discharge efficiency of the electrode, and make the light emission more uniform, and can increase the heat dissipation function of the electrode and prolong the service life of the planar light source. [Embodiment] A planar light source and an electrode structure thereof according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals. 2A is a schematic diagram of a planar light source in accordance with a preferred embodiment of the present invention.

And FIG. 2B is a partially enlarged cross-sectional view of FIG. 2A. As shown in FIGS. 2A and 2B, the planar light source 20 includes a first substrate 21, a second substrate 22, a gas discharge chamber 23, and an electrode structure 24. The first substrate 21 has a first phosphor layer 211, and the second substrate 22 has a second phosphor layer 221 opposite to the first phosphor layer 211. The second substrate 22 is 096132413 Form No. A0101 Page 5 of 18 1003384235-0 1360149 On October 19, 100, the core has a reflective layer 222 which is disposed on the second phosphor layer 221 and the first Between the two substrates 22. The first substrate 21 and the second substrate 22 are sealed together. The gas discharge chamber 23 is located between the first phosphor layer 211 and the second phosphor layer 221 and is filled with an inert gas such as xenon (Xe) or xenon (Ne). [0014] The electrode structure 24 is disposed in the gas discharge chamber 23, and has at least one pair of electrode tubes 24a and 24b. Each of the electrode tubes 24a and 24b includes an insulating tube body 241 and a conductive solution 242. The conductive solution 242 can be An aqueous solution or an electrolyte solution is accommodated in the insulating tube body 241. The insulating tube body 241 can be transparent or non-transparent. Wherein, if the insulating tube body 241 is formed of a transparent material such as a glass tube, the light transmittance and the light uniformity of the planar light source 20 can be increased; if it is a non-transparent material, a fluorescent powder can be selected (Fig. Not shown) applied to the outer surface of the insulating tube body 241. The second substrate 22 further has at least one strip-shaped protrusion 26 perpendicular to the pair of electrode tubes 24a and 24b; the strip-shaped protrusion 26 may be made of a material having reflected light such as magnesium oxide, aluminum oxide or barium sulfate. [0015] The planar light source 20 further includes a power supply 27 and another pair of electrode tubes 24a' and 24b', and is disposed outside the first substrate 21 and the second substrate 22 to form a single loop respectively (as shown in the figure). The arrow is shown). After the power supply 27 is electrically connected, the pair of electrode tubes 24a' and 24b' are energized. [0016] In the present embodiment, since the electrode tubes 24a and 24b are relatively distributed in the gas discharge chamber 23, and the tubular corresponding surface area is larger than the layered corresponding surface area, the discharge area of the tubular electrode is larger than the conventional layered electrode. Discharge area.

096132413 Form No. A0101 1003384235-0 1360149 100. October 19th Revision Replacement Page [0017] Referring to Figures 3A to 3C, a pair of electrode tubes 34a and 34b may be arranged in parallel in a meandering manner (e.g., 3A). As shown in the figure, it should be noted that the convex portions of the pair of electrode tubes 34a and 34b are disposed corresponding to the convex portions. As shown in Fig. 3B, a pair of electrode tubes 44a and 44b may be provided in a bamboo-like shape, and at least one transparent glass tube G is added, and the glass tubes G of the electrode tubes 44a and 44b are disposed correspondingly. As shown in Fig. 3C, the pair of electrode tubes 54a and 54b may be wound around each other in a spiral shape.

[0018] Referring to FIG. 4, the arrangement of the plurality of electrode structures 24 of the planar light source 20 to the electrodes 24a and 24b and their electrical connection. Two pairs of adjacent electrode tubes 24a and 24b are formed in a single circuit with the pair of electrode tubes 24a' and 24b', and are arranged in parallel in pairs, and are electrically connected by a power supply unit 27. It should be noted that since the electrode structure 24 has a conductive solution flow cycle, the heat energy generated by energizing the electrode can be taken out (as indicated by an arrow in the figure), and has the effect of dissipating heat.

Referring to Fig. 5, another type of electrical connection of the pair of electrodes 24a and 24b of the electrode structure 24 of the planar light source 20 is shown. When the plurality of counter electrodes 24a and 24b are arranged in series, the electrode tubes 24a and the electrode tubes 24b are connected to each other to form a series arrangement. Further, the electrode tubes 24a' and 24b' are electrically connected to the power supply unit 27. Such a design can reduce the number of configurations of the electrode tubes 24a' and 24b', and further increase the flexibility of the electrode structure design. In summary, the planar light source of the present invention and its electrode structure form a conductive electrode of a planar light source by accommodating a conductive solution in the insulating tube body and changing the shape of the pair of electrodes. Compared with the prior art, the electrode structure of the invention can increase the discharge area of the electrode and the discharge gas, improve the discharge efficiency of the electrode, and make the illumination more uniform, and can increase the heat dissipation function of the electrode 096132413 Form No. A0101 Page 7 / Total Page 18, 1003384235-0 1360149 On October 19, 100, according to the replacement page, the service life of the planar light source is extended. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS [0019] FIG. 1 is a schematic view of a conventional planar fluorescent lamp and its electrode structure; FIG. 2A is a schematic view showing a planar light source and an electrode structure thereof according to a preferred embodiment of the present invention;

2B is a partial enlarged cross-sectional view of FIG. 2A; FIGS. 3A to 3C are schematic views showing different variations of the electrode structure of the present invention; FIG. 4 is a view showing the configuration and electrical properties of the electrode structure of the preferred embodiment of the present invention; FIG. 5 is a schematic view showing the arrangement and electrical connection of another electrode structure according to a preferred embodiment of the present invention. [Main component symbol description] [0020] 10: planar fluorescent lamp 20: planar light source 11, 21: first substrate 111, 211: first fluorescent layer 12, 22: second substrate 121, 221: second fluorescent Layers 122, 222: reflective layers 13, 23: gas discharge chamber 14: electrode layer 096132413 Form No. A0101 Page 8 of 18 1003384235-0 1360149

100 years. October 19th revised replacement page 14a, 14b: electrode 15: support 枉 16: dielectric layer 24: electrode structure 24a ' 24b ' 24a * '241 /, 34a, 34b, 44a, 44b, 54a, 54b: Electrode tube 241: Insulating tube body 242: Conductive solution 26: Strip-like protrusion 27: Power supply G: Glass tube 1003384235-0 096132413 Form No. A0101 Page 9 of 18

Claims (1)

1360149 October 19, 100 revised replacement page VII, the scope of application patent: 1. An electrode structure of a planar light source, the planar light source sequentially has a first substrate, a gas discharge chamber and a second substrate, the first substrate Having a first phosphor layer, the second substrate has a second phosphor layer opposite to the first phosphor layer, and the gas discharge chamber is located between the first phosphor layer and the second phosphor layer The electrode structure is disposed in the gas discharge chamber. The electrode structure comprises: at least one electrode tube pair, each of the electrode tubes comprises: an insulating tube body; and a conductive solution disposed in the insulating tube body . The electrode structure according to claim 1, wherein the electrode tube is in a braided, bamboo-like or spiral configuration. Wherein the insulating tube body is the insulating tube body, wherein the insulating tube body comprises the phosphor powder system. The electrode structure according to claim 1 is transparent or non-transparent β. As claimed in claim 3 The electrode structure described is glass. • The electrode structure as recited in claim 1 includes a phosphor. The electrode structure as described in claim 5 is applied to the surface of the insulating tube body. The electrode structure of claim 1, wherein the electrode tube pair is connected in parallel or in series with other electrode tube pairs. The electrode structure of item 1, wherein the conductive solution is an aqueous solution or an electrolyte solution. The dipole structure as described in claim 1, wherein the second substrate 096132413 form number A0101 1003384235-0 page 10 / total 18 pages 1360149 10 11 12 13 14 15 16 17 _32413 100 years October 19 The day correction replacement page has at least one piece of protrusion. The electrode structure-like projections as described in claim 9 are perpendicular to the pair of electrode tubes. The material of the electrode structure as described in claim 9 is a material having reflected light. The electrode structure according to claim 11, wherein the at least protrusion is made of magnesium oxide, aluminum oxide or barium sulfate. The electrode structure of claim 1, wherein the second substrate further has a reflective layer disposed between the second fluorescent layer and the second substrate. The electrode structure, wherein the gas discharge chamber is filled with an inert gas, such as the electrode structure described in the U.S. Patent Application Serial No. U, wherein the inert gas comprises helium or neon. For example, the electrode structure of the first aspect of the patent application system, wherein the planar light source is a planar glare lamp, a planar light source, comprising: a first substrate having a first glory layer; and a '-substrate' Having a first-volume-ample-first layer opposite to the first phosphor layer; a gas discharge chamber between the first light layer and the second phosphor layer; and - an electrode structure The system is disposed in the gas discharge chamber and has at least a first-electrode tube pair, each of the electrode tubes includes an insulating tube body and a conductive solution, and the conductive solution is received in the insulating tube body. The planar light source of claim 2, wherein the first electrode form number Α0101, page 11 / total U hundred, wherein the at least one of the at least one strip is 1003384235-0 18 ^00149 ^00149 096132413 19 20 21 22 23 24 25 26 27 28 29 October 19, 100 1003384235-0 The camp is in a braided, bamboo-like or spiral configuration. [2] The planar light source of claim 17, wherein the insulating tube body is transparent or non-transparent. • ^Please refer to the planar light source described in the patent, wherein the insulating tube system is glass. 'Please refer to the planar light source mentioned in Item 17 of the patent range, wherein the insulating tube system includes a fluorescent powder. 21_ The plane is cut, wherein the phosphor powder is applied to the surface of the insulating tube body. The planar light source of claim 17, wherein the first electrode f is in parallel or in series with other first electrode tube pairs. The planar light source of claim 17, wherein the conductive solution is an aqueous solution or an electrolyte solution. The planar light source of claim 2, wherein the second substrate further has at least one shape of protrusions. The planar light source of claim 25, wherein the at least one raised protrusion is perpendicular to the at least one first electrode tube pair. The planar light source of claim 25, wherein the material of the at least one protrusion is a material that reflects light. The planar light source of claim 27, wherein the material of the at least one protrusion is oxidized town, oxidized or sulfuric acid. The planar light source of claim 17, wherein the second substrate further has a reflective layer disposed between the second phosphor layer and the second substrate. The planar light source of claim 17, further comprising a power supply unit \\ electrically coupled to the at least - first electrode tube. Form No. A0101, page 12, a total of 18 pages 30. 1360149 31 32 October 19, 100, the nuclear light source of claim 30, further comprising a second electrode tube disposed at the first And outside the second substrate, and electrically connected to the power supply. A planar light source as described in claim 17 is a flat fluorescent lamp. 1003384235-0 096132413 Form No. A0101 Page 13 of 18