TWI308981B - Flat fluorescent lamp and liquid crystal display device thereof - Google Patents

Description

I3089S139itw 17415twf.doc/e IX. Description of the Invention: [Technical Field] The present invention relates to a flat fluorescent lamp and a liquid crystal display device, and more particularly to a high luminous efficiency flat fluorescent lamp and a A liquid crystal display device comprising the above planar fluorescent lamp. [Prior Art] With the advancement of modern video technology, liquid crystal display devices have been widely used in display screens of mobile phones, pen computers, personal computers, and personal digital assistants (PDAs). However, since the liquid crystal display panel of the liquid crystal display device itself does not have the function of emitting light, it is necessary to arrange a backlight module under the liquid crystal display panel to provide a light source required for the liquid crystal display panel, thereby enabling the liquid crystal display panel to achieve the display function. Currently, the backlight module on the market mainly uses flat fluorescent lamps (Flat Flu〇rescent).

Lamp, FFL), c〇id Cathode Fluorescent Lamp (CCFL) and Light Emitting Diode. The flat fluorescent lamp has the advantages of low price and small space. It is widely used in liquid crystal display devices. 1 is a partial side cross-sectional view of a conventional flat fluorescent lamp. Please refer to FIG. 1 'The conventional planar fluorescent lamp 1 is formed by a pair of upper substrate n0 and a lower substrate 120. 'A discharge space is formed between the upper substrate U0 and the lower substrate 12' and the discharge space is The discharge gas was charged 13 〇. An electrode group 14A is formed on the lower substrate 120, and a dielectric layer 150 is covered on the electrode group 14 to protect the electrode group 14A. Further, a phosphor material 16 is applied on the inner walls of the upper substrate 11 and the lower substrate 12 () and the outer walls of the dielectric layers I3089 & 139itw 17415twf.doc/e 150. The planar fluorescent lamp 100 is driven by applying a driving voltage to the electrode group 140 to generate a discharge electric field E, and the discharge electric field E is to discharge the discharge gas into an electric H. Thereafter, the electrons in the respective ions of the electric towel emit ultraviolet rays while returning to the ground state, and when the ultraviolet rays emitted from the electricity (four) are irradiated to the fluorescent material 160, the fluorescent material 16 is excited to emit light. Therefore, the luminous efficiency of the flat fluorescent lamp 100 is determined by the extent to which the discharge electric field E frees the discharge gas 130. However, since the electrode group 14A is disposed on the surface on the side of the lower substrate 120, the discharge electric field E can be roughly divided into a discharge electric field Ein located in the discharge space, and a discharge electric field Eout located outside the lower substrate 12, wherein Only the discharge electric field Ein can free the discharge gas 130. Since the discharge electric power % Eout is not sufficiently utilized to free more of the discharge gas 130, the luminous efficiency of the flat fluorescent lamp cannot be further improved. 2 is a partial side cross-sectional view of another conventional planar fluorescent lamp. Referring to FIG. 2, the conventional planar fluorescent lamp 2 is bonded by an upper substrate 210 and a lower substrate 220. The upper substrate 21 has a plurality of grooves 212 to form a discharge space with the lower substrate 220, and The discharge gas 230 is filled in the discharge space. An electrode group 240 is formed on the outer sidewall of the lower substrate 220, and a phosphor material 260 is coated on the inner sidewalls of the upper substrate 210 and the lower substrate 220. Similarly, the electrode group 240 generates a discharge electric field E to dissipate the discharge gas 230 into a plasma, and when the ultraviolet light emitted from the plasma is irradiated to the fluorescent material 260, the fluorescent material 260 is excited to emit light. However, due to part of the discharge electric field £. 111 is not located in the discharge space, so that 13 Ο 89 17415twf.doc/e electric gas 230 cannot be released freely, and the partial discharge electric field ε free discharge gas 230 located in the discharge space alone cannot effectively raise the planar fluorescent lamp. Light efficiency. A SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a planar light that can fully utilize an electric field to provide a relatively luminous efficiency. 再 A further object of the present invention is to provide a liquid crystal Displaying the crack, the surface fluorescent lamp is described, and has better display brightness and display quality. Spoon: other purposes' The present invention proposes a flat beam light, = first substrate, - second substrate, a discharge gas, an electrode group, a 7-electrode layer, and a camping material. The first substrate has at least a second recessed plate and the first substrate and the second substrate are oppositely joined to make the first recess and the second The recessed structure and the electrode group are disposed in the discharge space: the eight-electrode group k supply-discharge electric field is in the discharge space, and the first-concave disk=recess is respectively located on opposite sides of the electrode group, and the riding layer is covered Including the flat The electrode group, for example, includes a side-by-side strip electrode and a second strip electrode group, for example, disposed on the second substrate. Further, the first recess _ ^ - the groove and the second recess includes, for example, a second recess The groove is located between the first strip electrode and the second strip electrode. In addition, the cross section with the second groove is, for example, a v-shape, a U-shape, and other shapes. The groove is a plane according to an embodiment of the present invention. Fluorescent lamp, electrode group such as 130898>i739ITW 17415twf.doc/e includes a plurality of strip-shaped electrodes and at least a second strip electrode disposed between two adjacent strip-shaped electrodes, and Article: 'In the embodiment of the description, 'missing_ is disposed on the second substrate. = Bu, the first recess includes, for example, a first recess, and the second recess may be a plurality of second recesses parallel to each other. And the second strip can be between the first strip electrode and the second strip electrode. In addition, a cross section of the recess == is, for example, a v shape, a u shape, and the like. For other purposes, the present invention further proposes

J 'includes - a liquid crystal display panel and a flat fluorescent lamp, wherein; face L: the side of the panel is used to provide a liquid crystal display panel display body, an electrode group, a dielectric layer to cover the second, and the first substrate and the first The two substrates are relatively joined such that the first threshold: the electrode group provides a discharge electric field in the discharge space, and the first recess and the second recess are respectively on the side, and the dielectric layer covers the electrode group. The two opposite elements of H according to the present invention include a side-by-side strip electrode and a second pole 3: disposed on the second substrate. In addition, the first-depression is for example a package; The groove is located between the first strip electrode and the second strip electrode; the cross section of the first I3089 & 139ITW 17415twf.doc/e groove and the second groove is, for example, a v shape, a (10) shape, and the like. According to the crystallographic display device of the embodiment of the present invention, the electrode group includes, for example, a plurality of strip-shaped electrodes and at least one second strip electrode, wherein the second strip electrode is located between the two subtracted first-recording electrodes And side by side with the strip-shaped electrode. In the above embodiments, the electrode group is disposed, for example, on the second substrate. The second outer 'the first recess includes, for example, a first groove, and the second recess may be formed by a second groove in which the plurality of phases f are parallel, and each of the second grooves may be respectively located at two adjacent strip-shaped electrodes and Between the second strip electrodes. Further, the cross section of the first groove and the second groove is, for example, a V shape or a U shape. The two: "two lights";, =: two = the liquid crystal flat display device of the thousand first lights, can be used and the quality of the display. -, the negative and the better is not easy to understand: features and advantages can More clearly, it is as follows: _, and with the _ schema, for details [Embodiment] Stereo 2-3 is: Partial stereoscopic view of the flat fluorescent lamp of the embodiment of the present invention, and FIG. 3B is Figure 3A is a plan view. Please refer to FIG. 3A and the partial side view 3A of the first lamp and FIG. 3B. The planar glory of the embodiment. l3〇898^39ITW 17415twf.doc/e mainly includes a first substrate. 310, a second substrate 320, a discharge gas 330, an electrode group 340, a dielectric layer 35A, and a phosphor material 36. The first substrate 310 has a first recess 312, and the second substrate 32 has a second recess 322, and the first substrate 31 is oppositely coupled to the second substrate 32, such that the first recess 312 and the second recess 322 form a discharge space S. In this embodiment, the first recess 312 and the first recess The two recesses 322 are respectively formed by a groove, and the groove has a semicircular cross section. Of course, the groove The cross section may also be U-shaped, v-shaped (as shown by the second recess 522 in Fig. 5) and other suitable shapes (e.g., irregular shapes). Further, the first recess 312 and the second recess 322 are not limited to concave. In other embodiments, the first substrate 31 and the second substrate 32 are made of glass or a transparent plastic material, and are formed by, for example, hot pressing. Forming, pressing the heated substrate at a high temperature with a specially designed mold, and transferring the pattern on the mold to the substrate to form a special shape such as the first recess 312 and the second recess 322. Of course, the first substrate 31 is The manufacturing method of the first substrate 320 can also be formed by injection molding or other suitable methods, and is not described here again. The above-mentioned 'discharge gas 33 〇, electrode group 34 〇 and fluorescent material 36 承 are all disposed on In the discharge space S, the electrode group 鸠 is provided in the discharge space s to provide a discharge electric field E to disperse the discharge gas 330. After that, each ion (10) in the Wei state is excited at the same time as the _ ground state. External line When the ultraviolet light emitted by the polymerization is irradiated to the fluorescent material 360, the fluorescent material 36 is excited to emit light. In the present invention, the first recess M2 and the second recess 322 are respectively located on opposite sides of the electrode group 34, 39ITW 17415twf. The doc/e is such that most of the discharge electric field e supplied from the electrode group 340 can be located in the discharge space S, so that the degree of free discharge gas 33 大幅 can be greatly increased, thereby improving the luminous efficiency of the planar fluorescent lamp 300. Referring to FIG. 3A and FIG. 3B, the electrode group 340 of the present embodiment is disposed on the second substrate 320, for example, and the dielectric layer 35 is covered with the electrode group 34 to protect it from ion bombardment of the plasma. The electrode group 340 includes a first strip electrode 342 and a second strip electrode 344 side by side, wherein the first strip shape

The electrode 3U can input a high voltage as an anode (or input a low voltage as a cathode)' and the second strip electrode 344 can input a low voltage as a cathode (or a high voltage as an anode) to generate in the discharge space s. The discharge electric field E. The driving method of the front is taken as an example of direct current, and #然, if the electric current is driven, the voltage values of the first strip electrode 342 and the second strip electrode 344 will change with time. The first strip electrode 342 and the second strip electrode 344 are formed on the second substrate, for example, by printing or electroplating. Of course, the present invention does not limit the electrode group. The location of the 340, for example, can also

The pole and the cathode are arranged on the first substrate 31 (), or the anode and the cathode are disposed on the first substrate 31 and the second substrate 32 (). m, bearing >! The above-mentioned 'discharge gas 330 includes, for example, an inert gas such as gas (Xe), helium e KAr) or other suitable gas, and the glory material 360 is formed, for example, by spraying. The substrate 31 is on the inner side surface of the second base. It is worth mentioning that, since the first substrate 31 and the two substrates 320 respectively have the first recess 312 and the second recessed milk, 11 I3089 & 1739ITW 17415twf.doc/e = larger than the planar substrate The inside surface of the area. The reaction area of the f-light (four) 360 can be increased, thereby improving the luminous efficiency of the light lamp 3GG. (4) Ten-sided fireworks Figures 3C to 3E are respectively different views of the different forms in Fig. 3A. Referring to FIG. 3c, in the embodiment, each first=342 may include a strip-shaped body 342a and a plurality of bumps smashed and 34; ^^ 34" ” when the first strip electrode 342 and the first When the two strip electrodes are connected to the voltage, the bumps will be electrically charged to the second strip electrode 344 to form a majority of the triangular discharge regions of the pair. Of course, the present invention can also reverse the shape of the first strip electrode 34; Referring to FIG. 3D, in the second embodiment, a strip-shaped body 3· and a plurality of protrusions may be included: ', and the two bumps 344b protrude from one side of the strip-shaped body 344a toward the first:=pole 342. When the voltage is applied to the first strip electrode 342 = electrode 344, the bumps 344b will be tilted to the first strip electrode, and _ will be a point of the triangle to the majority of the triangular discharge region. 342 and the figure "In the present embodiment A, the shape of the first strip electrode electrode ^ 344 is a straight line, when the first strip electrode 342 strip electrode 344 input electricity, it will be in the first line . Between the first strip electrodes 344 forming a line-to-line discharge region, the above embodiments are merely illustrative of the invention of the invention, the second electrode 342 and the second strip electrode 344 The shape is not limited by the shape of the first strip electrode and the second strip electrode 344 not 12 I30898fciTw 17415twf.doc/e. Neighbor 2: t ί according to another embodiment of the present invention, the planar fluorescent light is produced by a three-dimensional image, and the image of Fig. 4 Β A FI /1 λ is shown. Referring to Fig. 4, the partial side view of the planar glory lamp of Fig. 3α4Α is similar, and the following will be different: 3 Β 'the present embodiment and the above-mentioned implementation of the fluorescent lamp 400, the first description. In the plane substrate of the present embodiment, the first recess 422 is the second recess 422 and the first

= 422, for example, consists of two mutually parallel groove pockets. := _ includes, for example, two first strip electrodes 442 and one strip electrode 444, 1 Φ 筮 jjr Ub ^ 丨 口 - 均 ^ ^ strip electrode 442 and second strip electrode 444 " ' The second strip electrode 444 is located between the substrates 420. When the first strip electrode 442 is applied as an anode (or a low voltage is used as a cathode), and the second strip

^Electrode 444 inputs low voltage as cathode (or input high voltage as yang, 'when generating discharge electric field E, most of the discharge electric field E is located, the electric I between the S towel' can greatly enhance the free discharge gas. To the extent that the luminous efficiency of the planar fluorescent lamp 4 提升 is improved. However, the present invention does not limit the groove constituting any of the second recesses 422 = the number is more advanced - the invention is also not limited The number of grooves of any one of the first recesses 312. For example, the first recess 312 is composed of, for example, two or more recesses, and the second recess 422 is composed of, for example, three or more recesses, and an appropriate electrode is disposed. The group 440 provides a discharge electric field in the discharge space. Further, the present invention does not limit the number of the first strip electrodes 442 and the second strip electrodes 444, however, the first strip electrode 442 and the second strip 13 130891⁄2 39ITW 17415twf.doc/e The number of electrodes 444 or the arrangement position must be matched with the shape of the discharge space s so that most of the discharge electric field E supplied from the electrode group 44 can be located in the discharge space S, thereby obtaining a better discharge. Effect. Familiar with this technique The above-mentioned situation can be deduced by itself, and is not shown here. Fig. 4C to Fig. 4E are respectively a top view of the electrode group of different forms in Fig. 48. Referring to Fig. 4C, in this embodiment, Each of the second strips of electricity / 444 may include a strip-shaped body 44 such as a plurality of bumps 44, wherein the strips 444b are protruded from the strip-shaped body 44 such as the first strip electrodes on both sides and are located differently The bumps on the side—for example, when the electrodes are input to the first strip electrode 2 and the second strip electrode 444 at intervals, the bumps 444b discharge the first strip electrodes 442 on both sides to The majority of the triangular discharge regions are formed. Of course, the present invention can also reverse the shape of the first strip electrode. Referring to FIG. 4D, in the second embodiment, the "shaped electrode 442 can include a strip-shaped body 442a with a number 442b". The bumps 4 sen are protruded from the side of the strip body _ toward the inner pole 444. When the input voltage is applied to the first strip electrode 4, the bumps 442b will be the second strip=pole 444 is discharged to form a majority of the triangular discharge region. Material 2 and the first crime 'in this embodiment, The shape of the strip electrode 444 of the first strip electrode is a straight line. When the voltage is input to the electrode 442 and the second strip electrode 444, a line pair is formed between the second electrode 442 and the second strip electrode state. & discharge area 14 Ι30898έ

39ITW 17415twf.doc/e Garden: > For the sake of, a three-dimensional diagram. Please refer to the part of the surface of the crab light. The difference is that the second part of the plate is 520. The second hole 522 of the plate 520 is the same as the most of the thief provided by the base. of

The strip electrode 442 and the second strip electrode 4 are not described again. The combination of the money domain, the first embodiment of the first substrate and the second depression == 2 are located on opposite sides of the electrode group, so that the electrode "for !::: = electricity , can be located in the discharge space n (four) composed of the first recess and the second recess, the artist can peak the first base of each lion

And a second substrate, with an appropriate remainder to form the planar glare of the present invention. In addition, in the foregoing embodiments, in order to further improve the luminous efficiency of the planar glory lamp, the present invention can further form a structure capable of increasing the surface area on the inner side surface of the first depression and the second depression, in order to improve the reaction of the fluorescent material. area. 6 and 7 are partial perspective views of different first substrates in accordance with a preferred embodiment of the present invention. Referring to FIG. 6, the first recess 612 of the first substrate 61 is formed by a recess, and the inner surface of the first recess 612 has, for example, a plurality of recesses 612a on the side surface of the I Ib 98JJITW 17415twf.doc/e. A recess 612 can have a larger inner surface area. When the phosphor material is applied to the first recess 612, the phosphor material will have a large reaction area, and the light-emitting efficiency of the flat fluorescent lamp can be further improved. Moreover, in other embodiments, a plurality of protrusions are formed on the inner side surface of the first recess to provide a larger inner surface area for the first recess. Referring to FIG. 7, the first recess 712 of the first substrate 710 is formed by a groove, and on the inner side surface of each of the first recesses 712, a groove 7丨2a parallel to each other is formed. A recess 712 can have a larger inner surface area. Similar to the foregoing, the firefly ===large reaction area coated in the first recess 712 is formed on the inner side surface of the first recesses 612, 712 by a more advanced step-up plane. The structure of the surface area can also be adapted to the second recess of the second substrate to the inner surface area of the recess. The above embodiments are not intended to be used in the present invention, and any one skilled in the art will be able to modify the shape and structure of the first recess and the side surface to make the first recess and the second surface area. Incidentally, the above-mentioned increaseable ==== is, for example, a design for changing the mold, and is a liquid crystal display device. Figure 8 The liquid of the example: Display: Mounting; This is a flat-panel fluorescent day display panel. "This plane fluorescent lamp 820 can be more than the above. 16 I30898i39iTw 17415twf.doc/e I30898i39iTw 17415twf.doc/e

Different types of flat fluorescent lamps (such as flat fluorescent lamps 3, 400, 500, etc.) in several embodiments. The flat s-light (4) is disposed on the liquid crystal display panel 810 and is used to provide a backlight for the liquid crystal display panel 81 to display the liquid crystal display panel 81. Since the flat fluorescent lamp 810 has high luminous efficiency, the liquid crystal display device using the flat fluorescent lamp can have better display brightness and display quality. Of course, the planar fluorescent lamp of the present invention is not intended to be limited to use in a liquid crystal display device. It can be applied to any electronic device requiring a backlight. In summary, the planar fluorescent lamp and the liquid crystal display device of the present invention have at least the following advantages: 1. a discharge space by a first recess of the first substrate and a second substrate of the second substrate, and respectively The first 々 is configured, and the second recess is on the opposite side of the electrode J, so that most of the discharge electric field is located at the discharge inhibition rate. In addition, "the luminescence effect of the planar glory lamp has a first recessed one compared to the planar substrate.

The second substrate has a large inner surface area: such as: :if = the reaction area to enhance the illuminating of the planar fluorescent lamp, and the addition of the sandwich (4) i / the inner surface of the first recessed surface 4 ί surface area I structure The optical material may have a better anti-fineness, so that the lamp has high luminous efficiency, and the liquid crystal display device having better display brightness and the first lamp may have I3089&W 17415twf.doc/e. Although the present invention has been disclosed in the preferred embodiment As above, it is not intended to limit the invention, and any person skilled in the art can make some modifications and refinements without departing from the spirit of the invention. Therefore, the scope of protection of the present invention is attached to the application. The scope defined by the patent scope shall prevail. . BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial side cross-sectional view of a conventional flat fluorescent lamp. 2 is a partial side cross-sectional view of another conventional planar fluorescent lamp.

Fig. 3A is a partial perspective view of a flat fluorescent lamp in accordance with an embodiment of the present invention. Figure 3 is a partial side elevational view of the planar fluorescent lamp of Figure 3A. 3C to 3E are respectively partial top views of the electrode groups of different forms in Fig. 3A. Section 4B of a planar glare lamp according to another embodiment of the present invention is a partial side view of the planar fluorescent lamp of Fig. 4A. ^ 4C to 4E are respectively a partial top view of the electrode groups of different forms in Fig. 4A.

Figure 4 is a partial perspective view of a flat (four) light lamp in accordance with a further embodiment of the present invention. = 6 and Figure 7 are fragmentary perspective views, respectively, of different first substrates in accordance with a preferred embodiment of the present invention. Figure 8 is a schematic illustration of a liquid crystal display in accordance with an embodiment of the present invention. [Main component symbol description] 100, 200: flat fluorescent lamp 18 13 Ο 8 9 SlsflTW 17415twf.doc/e 110, 210: upper substrate 120, 220: lower substrate 130, 230: argon gas 140, 240: electrode group. 150: dielectric layer 160, 260: fluorescent material '210: groove 300, 400, 500, 820: flat fluorescent lamp 310, 610, 710: first substrate ru 312, 612, 712: first recess 320, 420, 520: second substrate 322, 422, 522: second recess 330: discharge gas 340, 440: electrode group 342, 442: first strip electrode 344, 444: second strip electrode 342a, 344a, 442a, 444a: strip-shaped body 342b, 344b, 442b, 444b: bump #350: dielectric layer 360: fluorescent material 612a: recess 712a: groove '800: liquid crystal display device. 810 · liquid crystal display panel E, Ejn , EQUt : discharge electric field S: discharge space 19

Claims (1)

8981 £7-10.07, Patent Application Range: 1. A flat fluorescent lamp comprising: if: a substrate having at least a first-recess; the first substrate 'having at least one sensitive one opposite to the second substrate to enable 曰: Among them: Haidi ~ substrate into - discharge m (5) trapped with the second four trapping a discharge gas, arranged in the discharge door. Provide two: match;: the discharge ", to electric, catch t, enemy power The % of electricity, wherein the first fourth-order life is divided into opposite sides of the electrode group in the work chamber; /, dx苐-recess is respectively located in a dielectric layer covering the electrode group; and - the fluorescent material is configured In the discharge space. 2. The electrode group according to the scope of the patent application includes one of the first strips of the second strip, and the surface fluorescent lamp, wherein the reading 3. If the patent application scope is 2, ; a strip electrode. The electrode group is disposed on the planar fluorescent lamp of the second substrate 34, wherein the reading is as described in the patent application scope; the third item of the first recess includes the first slot and the tenth surface of the fluorescent level. a groove, and the second groove is located between the μ and the recess includes a second quad. The groove is located in the brother Strip electrode and the second strip of electricity # 5. The cross section of the flat and the two grooves described in the fourth paragraph of the patent scope is v-shaped, u-shaped: irregular electrode patent patent item 1 The planar fluorescent lamp, wherein the 1308981 97-10-07 plurality of first strip electrodes; and the at least one second strip electrode are located between the two adjacent first strip electrodes, and The flat-shaped fluorescent lamp according to claim 6, wherein the electrode assembly is disposed on the second substrate. 8. The plane as described in claim 7 a fluorescent lamp, wherein the first recess comprises a first recess, and the second recess is formed by a plurality of second recesses that are parallel to each other, and each of the second recesses is located at a position adjacent to each other The flat fluorescent lamp according to the eighth aspect of the invention, wherein the first groove and the second groove have a V-shaped cross section. One of a shape and an irregular shape. 10. A liquid crystal display device comprising: a liquid crystal display panel, a flat a surface fluorescent lamp disposed adjacent to the liquid crystal display panel for providing a backlight for displaying the liquid crystal display panel, the planar fluorescent lamp comprising: a first substrate having at least one first recess; and a second substrate; Having at least one second recess, wherein the first substrate and the second substrate are oppositely joined such that the first recess and the second recess form a discharge space; a discharge gas is disposed in the discharge space; Disposed in the discharge space to provide a discharge electric field in the discharge space, wherein the first recess and the second recess are respectively located on opposite sides of the electrode group, and a dielectric layer covers the electrode group; A phosphor material is disposed in the discharge space. 21 1308981 11. As claimed in the patent application section ίο 97'10'07 pole 5 hai electrode group includes a side-by-side one of the first strip-shaped electro-twisted crystal display device, ° °. The Q and the two strips of electricity U. As described in the scope of claim U, the read electrode assembly is disposed on the second substrate. A night crystal display device, wherein: the first recess includes a first recess, and the first crystal display device has: and the second recess is located at the first The strip includes a second core < Pole - the second strip of the middle & 14 · as in the scope of the patent scope of the 13th paragraph - the groove and the second groove of the cross-section of the system; Shape, 1J shape and irregularity 15. The electrode group according to the first aspect of the patent application includes: a night day display device, a plurality of first strip electrodes; and, a second strip electrode, located at Two adjacent turns and side by side with the first strip electrodes. The electrode group is disposed on the second substrate as described in claim 15 of the patent application. The day-to-day display device 'is 兮i7. The liquid-day in the liquid-spot--the recess includes the -th-groove, and the day-to-day device is the second parallel structure. The concave (10) consists of a plurality of phase-phase n-shaped electrodes. The two grooves are respectively located in two regular shapes, and the cross-sections of the two (four) two grooves are mu-shaped and i 22