TWI323907B - Back panel structure of plasma display panel - Google Patents

Description

1323907 IX. Description of the Invention: [Technical Field] The present invention relates to a barrier wall structure for a rear panel of an electric paddle display, and more particularly to a barrier wall structure having a projection. [Prior Art] In recent years, various types of flat display technologies have flourished, such as Liquid Crystal Display (LCD), Field Emission Display (FED), and Piasma Display Panel (PDP). Wait. In the flat panel display (FPD), the PDP has a simple structure, is easy to make a large-scale screen, has a long life, an ultra-wide viewing angle of more than 160°, and the overall appearance is light and thin, and does not occupy space. For various large-sized display devices, such as large-sized FPD TVs. The basic principle of PDP is to apply an electric field to the inert gas such as neon (Ne), helium (He), xenon (Xe), etc. to cause a discharge phenomenon and emit ultraviolet light, and a color fluorescent substance (ph〇sph〇r Material) emits visible light after being excited by ultraviolet light. The display area of the PDP is composed of a plurality of pixels (image ceu), and the new generation of pDp is usually interlaced by a lateral barrier wall and a longitudinal barrier wall to form a lattice-like discharge cell ( Discharge cell), please refer to the prior art 1A to 1C'. FIG. 1A is a top view of a partial discharge cell, and FIG. iB is a top view of a single discharge cell. FIG. 1C is a single discharge crystal. A schematic view of the cells, each of the discharge cells 12 is a space surrounded by two adjacent longitudinal barrier walls 14 and two adjacent lateral barrier walls 16. Usually, the fluorescent substance is coated on the bottom surface of the discharge cell and the side of the barrier wall surrounding each discharge cell 12 to increase the coating area and thereby improve the luminous efficiency of the PDP; the coating of the fluorescent substance is performed and discharged. The reticle corresponding to the unit cell is printed in alignment, and the first drawing is a schematic diagram of filling the phosphor paste on the discharge cell by a prior art technique, and the plurality of electrodes 5 〇 2 〇 are arranged in parallel on the glass substrate 18 The upper dielectric layer 22 is disposed on the glass substrate 18 and covers the electrode 20. The plurality of lateral barrier walls 16 are disposed on the dielectric layer 22. The space between the two adjacent lateral barrier walls 16 is The discharge cell 12, a doctor blade 28 fills the phosphor paste 26 through the cell of a lattice-like mesh plate 24 into the discharge cell 12' but is easily printed during the printing of the phosphor paste 26 Since the bubble 32 is enclosed, the solvent of the phosphor ink 26 is volatilized by heat, and a phenomenon in which the thickness of the phosphor is uneven, as shown in FIG. 1E, is the 萤 of the fluorescent substance 34 in the discharge cell 12. Thick unevenness, even the bottom surface of the discharge cell 12 has a cavity 36, so this pixel The luminous efficiency is poor, and even the problem of the flash point of the panel is generated. SUMMARY OF THE INVENTION In order to solve the problem of uneven thickness of the fluorescent substance at the bottom of the discharge cell caused by bubbles in the prior art plasma display during the phosphor printing process, the object of the present invention is to provide a barrier with protrusions. The wall structure and the protruding portion allow the air to be discharged from both sides when the camping body is filled, and the phosphor material can be uniformly applied to the bottom surface of the discharge unit cell and the side surface of the barrier wall surrounding the discharge unit cell. In order to solve the problem of poor luminous efficiency of the prior art electric paddle display, and even the problem of panel flash point, one of the objects of the present invention is to provide a barrier wall structure having a protruding portion to eliminate the flash point of the panel and improve luminous efficiency. SUMMARY OF THE INVENTION One object of the present invention is to provide a barrier wall structure having a protruding portion of a rear panel of a plasma display to increase the bulk density of a fluorescent substance of a discharge cell, thereby increasing the discharge space of the discharge cell. SUMMARY OF THE INVENTION One object of the present invention is to provide a barrier wall structure having a protruding portion of a rear panel of a plasma display, and a height difference between the lateral barrier wall and the longitudinal barrier wall to improve the pumping efficiency when the phosphor is filled. Therefore, the barrier wall structure having the protruding portion of the rear panel of the plasma display of the present invention can improve the uneven thickness of the fluorescent material of the discharge cell, and can increase the bulk density of the fluorescent substance A to increase the discharge space, thereby solving the panel. Improve the process yield and luminous efficiency of the plasma display. The U is connected, the structure is complex; = one embodiment provides -_display_^ d \ substrate, the Wei electrode is placed in parallel on the vocational board, · - two soil plates and covered with k The wall is disposed on the dielectric barrier layer on the second partition wall; the horizontal barrier wall and the longitudinal barrier wall transmit three open-discharge dielectric cells, wherein the per-discharge cell system is two adjacent partition walls and two (10) The longitudinal wall is staggered by (4) and the bottom of the (10), and the two adjacent lateral barrier walls and the two adjacent longitudinal ones are: layer: one protrusion facing each discharge cell; and - firefly The light object f is coated; the electricity is discharged to the == surface, the side surface facing the lateral barrier wall of the discharge cell, and the side facing the longitudinal barrier wall of the discharge cell. [Embodiment] Please refer to FIG. 2A to FIG. 2C of the present invention-embodiment, and FIG. 2A is a top view of a partial discharge cell. FIG. 2B is a top view of a single discharge cell, and FIG. 2c A schematic view of a single-discharge cell, the lateral barrier wall 46 and the longitudinal barrier wall 44 are interdigitated to form a lattice-shaped discharge cell 42, each of which is a two adjacent longitudinal barrier wall 44 and two phases. If the adjacent lateral barrier walls 46 are alternately surrounded, in this embodiment, the two adjacent lateral barrier walls 46 respectively have a protrusion 4 〇 toward each discharge cell 42 ′ and the height of the protrusion 40 is In the embodiment, the height of the protrusion 40 is smaller than the height of the lateral barrier wall 46, as shown in the second (: figure. In this embodiment, the fluorescent substance is coated. Deploying on the bottom surface of the discharge cell and the side of the barrier wall surrounding the discharge cell to increase the coating area and thereby improve the luminous efficiency of the PDP'. The phosphor coating of the present embodiment may be a network corresponding to the discharge cell. The board performs alignment printing, and FIG. 2D is an embodiment of the present invention Fill in the phosphor ink discharge cell slurry schematic view 'disposed in parallel to the plurality of electrodes 50 on the glass substrate 48, a dielectric layer (on the Dielectric and covering electrode 5G, re-established New York 4246 p dove wall 46 to

^cell 42, because the mesh of the stencil 54 is generally smaller than the opening of the discharge cell 42, when the U-body ink 56 is filled, it hits the protruding portion of the lateral resistance _ 46, and the air will be from the two of the protrusion 2 40 The side escapes, so no bubbles are formed, and the glory body ink gathers %==the film thickness is hooked to the camping light substance' as shown in Fig. 2E, the camping light material 64 = the cover is on the side of the (four) barrier wall 46 and protrudes The surface of Zou 4() is also covered on the bottom surface of the discharge cell 42. Fig. 3 is a view showing the size design of the large-outlet partition of the present invention in the single-discharge crystal drama of the present invention. In this embodiment, the type of the projection block 46 of the lateral barrier wall 46 is shown. For the lion extension body 'lion long side and horizontal barrier wall scale, trapezoidal short ΐϊϊΓ 4 4 ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ ΐϊϊΓ 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向The width W of the cell 42 is 20% to 5〇%, the dimension F of the trapezoidal short side is 1〇/0 to 3〇% of the lateral direction of the discharge cell 42 and Wj, and the thickness g of the protrusion 4〇 is the discharge crystal. The longitudinal direction of the cell u is 5% to 2G% of W2, and the dimensions of the side design are listed in Table-. Dimensional design G 5% to 20% w2 _ F 10% to 30% E ----- 20% to 50% Table 1 · Dimensional design requirements of the discharge cell of one embodiment of the present invention. In order to verify the efficacy of the present invention, the present invention produced a sample, and measured the thickness of the phosphor material of the sample of the embodiment of the present invention and the control group. For comparison, please refer to FIG. 3, an embodiment and a comparison of the present invention. The size bars of the samples of the group are listed in Table 2. Unit: jum W2 W, G F E The present invention 980 290 130 65 90 Control group 980 290 0 0 0 Table 2. Size of the sample of the present invention and the control group. In the present invention, the fluorescent substance is coated on the sample of the control group and the present embodiment by the same amount of phosphor ink filling and the same screen printing process conditions. In order to measure the film thickness of the fluorescent substance, the film must be split first. Can take photos and measurements. Referring to FIGS. 4A to 4H, FIG. 4A is a schematic top view of a split position of a single discharge cell of a control group, and a fluorescent substance 34 is applied to the longitudinal barrier wall 14 and the lateral barrier 16 of the discharge cell 2. The side, "a_a," is the transverse direction along the longitudinal centerline of the discharge cell 12, and the slice 'bb' is the longitudinal split line along the transverse centerline of the discharge cell 12. Figure 4B Figure 疋The single-discharge cell is shown along the "a_a,,, cross-section of the measured position and size after the split of the transverse split line, "Wa, the lateral width of the domain cell 12," Η:, is the discharge cell 12 The height of the longitudinal barrier wall 14, "Ca", "w," and "heart" respectively represent the measurement camp light, the center of the bottom of the mass cell 12, the center of the height of the left barrier wall, and the center of the height of the right barrier wall. The resulting film thickness; FIG. 4C is a schematic cross-sectional view of the discharge cell 12 along the "b_b," longitudinal split film, similar to FIG. 4B, "%," is the longitudinal direction of the discharge cell 12: width 'discharge The height of the lateral barrier wall 16 of the unit cell 12, "Ca, „, "L wide," represents the amount of material f 34 12 of the cell bottom electrically ^ Q of the left central barrier, and the resulting film thickness of the central barrier wall of towels height. 4D is a schematic view of the position of the split of the single discharge cell of the present embodiment, two horizontal 1323907

There is a protrusion 4 〇 toward the discharge cell 42 'the phosphor material 64 is coated with J ^ the longitudinal rigid wall 44 and the side of the lateral barrier wall 46, 'W, is > "C ^ split line 帛 疋 疋A schematic cross-sectional view of a single discharge cell 42 along the M-break line of the embodiment, "Wb, is the lateral width of the discharge cell 42, "H,, the measurement of the fluorescent substance 64 in the Ray b U ' and Rb" respectively Jie Jia bribe 1 f bottom _ central 'left side of the height of the center of the block, "the film thickness of the center of the next door; 4th,

^ ^ ^^taaa, M2^^A^46 «Do not represent shun _ 64 in the electric cell 42 ^ ; "Le", and the center of the south, and the height of the right side of the block _ thick Μ, left side barrier The 4Gth image of the wall is the discharge cell 12 of the control group along the %·plate, and the second diagram is the discharge cell 42 of the present embodiment along the "d_d,, = longitudinal section of the slice line photo" entity photo > The present invention can be more specifically understood by the longitudinal section of the cleavage line of the skilled artisan. The schematic diagram of the sifting line of the control group is shown in Table 3.

10 1323907

The measurement results of the film thickness of the phosphor material of this example are shown in Table 4. The longitudinal section along the "dd, '' cleavage line - '^ along the "cc" cleavage line thickness L〇C〇R〇Lb Cb ——^ Rh (μιη) 35.25 12.75 36.07 27.02 12.17 27.34 — Rh/ Cu side-to-bottom ratio Lc/Cc Rc/Cc Lb/Cb 2.76 2.83 2.22 22Γ Table IV. Measurement results of the film thickness of the fluorescent material of this example. Therefore, the same amount of phosphor ink filling and the same Under the condition of screen printing process, the thickness of the fluorescent material film of the control group and the present embodiment was compared. It can be found from Table 3 and Table 4 that the phosphor of the present embodiment has a small thickness and the side-to-bottom ratio is also more. Approaching the ideal value, it is known that the bulk density is better and there is a larger discharge space.

Therefore, the feature of the present invention is that the lateral barrier wall surrounding the discharge cell has a protruding portion facing the discharge cell, and the protrusion allows the air to be discharged from both sides when the phosphor is filled, thereby improving the fluorescent print (4) The needle is made of bubbles to make the thickness of the fluorescent material at the bottom of the unit cell uneven, and the bulk density of the fluorescent material can be increased to increase the discharge space. X, according to the spirit of the present invention, as long as two adjacent transverse barrier walls surrounding the discharge cell have two adjacent longitudinal barrier walls, at least any of which has a - toward the discharge cell; the camping material can be uniformly coated There is no limitation on the shape of the bottom surface of the discharge cell and the side surface of the barrier cell surrounding the discharge cell and the protrusion of the barrier wall. For example, in the foregoing embodiment, the protrusion of the two lateral barrier walls surrounding the discharge cell It is a trapezoidal extension with no protruding ridges on the wall. u, lw, a top view of a single-discharge cell of the present invention - an embodiment, the lateral resistance _ 76 and two adjacent longitudinal walls 74 enclosing one of the lateral barrier walls 76 a projection toward the discharge cell 72 =

11 1323907 The shape of the part 70 is a rectangular parallelepiped. 1 is a top view of a single discharge cell of an embodiment of the present invention, two adjacent lateral barrier walls 86 and two adjacent longitudinal barrier walls 84 surround a discharge cell 82, two lateral barrier walls 86 and two Adjacent longitudinal barrier walls 84 each have a projection 80 that faces the discharge cell 82, and the profile of the projection 80 is a partially circular extension. In addition, the lateral barrier wall and the longitudinal barrier wall may be further designed to have a height difference to improve the pumping efficiency when the phosphor is filled, and FIG. 7 is a perspective view of a single discharge cell of an embodiment of the present invention. Two adjacent longitudinal barrier walls 94 are interleaved with two adjacent lateral barrier walls 96 to form a discharge cell 92 having a projection 90 toward the discharge cell 92, in this embodiment, the lateral barrier wall 96. The height is less than the longitudinal barrier wall 94 <» Figure 7 is a stereoscopic photograph of the partial discharge cell of the present embodiment. The physical photograph is provided here for comparison with the schematic diagram of the person skilled in the art, and can be more specific. Understand the present invention. In summary, the barrier wall structure having the protruding portion of the rear panel of the plasma display of the present invention can improve the uneven thickness of the fluorescent material at the bottom of the discharge cell caused by the bubble during the phosphor printing process, and can increase the firefly. The bulk density of the light material increases the discharge space, thereby solving the problem of the flash point of the panel, improving the process yield and luminous efficiency of the plasma display; and the lateral barrier wall and the longitudinal barrier wall can be further designed to have a height difference to improve the fluorescence The pumping efficiency of the second filling. The embodiments described above are merely illustrative of the technical spirit and the features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and to implement the invention. That is, equivalent variations or modifications made by the spirit of the present invention should still be included in the scope of the present invention. 12 1323907 [Simplified Schematic] FIG. 1A is a top view of a partial discharge cell of the prior art. Figure 1B is a top plan view of a prior art single discharge cell. Figure 1C is a perspective schematic view of a prior art single discharge cell. Figure 1D is a schematic illustration of prior art filling of a phosphor paste in a discharge cell. Fig. 1E is a schematic view showing the uneven thickness of the phosphor material of the prior art.

Fig. 2A is a top plan view showing a partial discharge cell of an embodiment of the present invention. 2B is a top plan view of a single discharge cell of an embodiment of the present invention. 2C is a perspective view of a single discharge cell of an embodiment of the present invention. Fig. 2D is a schematic view showing the filling of the phosphor ink pad on the discharge cell in the present invention-embodiment. Fig. 2E is a schematic view of the coating of the present-detailed material f. Figure 3 is a top plan view of a single__discharge cell of the present invention. Figure 4A is a schematic top view of the split position of a single discharge cell of the control group.

The figure is a schematic cross-sectional view of the position and size of the J after the single discharge cell of the control group, along with the transverse split line lobes.

The =4C plot is a schematic cross-sectional view of the single discharge cell of the control group along the "^," longitudinal position and size. The following J flute invention - the single-discharge cell of the embodiment - (10) position of the schematic view 4E Figure E - the schematic diagram of the implementation of the split line. The early discharge of the cell 42 along the 耆4D map, along the 4D map of "dd,,, the longitudinal single-discharge cell 42 13 4G is the control of the discharge cell 12 along the 4A "bb" of the figure, a longitudinal section photograph of the longitudinal split line. Fig. 4H is a longitudinal section photograph of the longitudinal split line of the discharge cell 42 of the embodiment of the present invention along the "dd," of the 4D. Fig. 5 is a top plan view showing a single discharge cell of an embodiment of the present invention. Figure 6 is a top plan view of a single discharge cell of an embodiment of the present invention. Figure 7A is a perspective view of a single discharge cell of an embodiment of the present invention. The figure is a perspective photograph of a partial discharge cell of an embodiment of the present invention. [Description of main component symbols] 12, 42, 72, 82, 92 discharge cells 14, 44, 74, 84, 94 longitudinal barrier walls 16, 46, 76, 86, 96 transverse barrier walls 18, 48 glass substrate 20 > 50 electrodes 22, 52 dielectric layers 24, 54 slabs 26, 56 phosphor ink 28, 58 squeegee 32 bubbles 34, 64 luminescent material 36 void 1323907 40, 70, 80, 90 projection a-a5 ' b -b5 ' c-c5 ' d-d5 cleavage line E, F size Ca, Ca', Cb, Cc film thickness La, La, Lb, film thickness G thickness Ha, Ha', Hb, Hc and degree Ra, Ra' , Rb, Rc film thickness Wj ' W2 width Wa, Wa, Wb, Wc width 15

Claims (1)

1323907, the patent application model: • The rear panel structure of the electric display, comprising: a substrate; a plurality of electrodes disposed in parallel on the substrate; a y dielectric layer disposed on the substrate and covering the electrodes; a barrier wall disposed on the dielectric layer; a plurality of longitudinal barrier walls disposed on the dielectric layer; wherein the lateral barrier walls ′, the longitudinal barrier walls are interlaced to form a lattice-shaped plurality of discharge cells, Wherein each of the discharge cell systems is two adjacent lateral barrier walls and two adjacent spaces of the longitudinal barrier walls & and the bottom surface of the discharge cell is the surface of the dielectric layer and the two Adjacent one of the two barrier blocking walls and the two adjacent longitudinal barrier walls, and the right one of the outlets facing each of the discharge cells and the second fluorescent material are coated The bottom surface of the sharp cell, the tearing of the sidewall of the discharge cell, and the side faces of the longitudinal walls facing the discharge cell. (5) The electric money described in item 1 shows an 11-plate structure, wherein the two adjacent ones of the birch-resisting blades have a projection toward each of the discharge cells. The 电3-direction plasma display rear plate structure is such that the two adjacent longitudinal knives have large portions toward each of the discharge cells. The plasma display rear panel structure of claim 1, wherein the two adjacent lateral barrier walls and the two adjacent longitudinal barrier walls respectively have a protrusion and two discharge blister. I is the rear panel structure of the electro-polymer display according to Item 1, wherein the materials of the electrodes are printed as the electro-polymer display rear panel structure, wherein the glory material is described in the network item 1. Wei shows the structure of the back plate of the eleventh, wherein the type system of the protrusion is a rectangular parallelepiped, a part of the oblong body of the trapezoidal extension body, or a group thereof, the system is repaired, and the page is changed. 8. As claimed in claim 1 The rear pad structure of the electric paddle display, wherein: the trapezoidal extension body of the protrusion portion, wherein the trapezoidal long side of the trapezoidal extension body is connected with the surrounding edge of the fan, and the trapezoidal extension is connected with the trapezoidal extension a first side perpendicular to the first side of the discharge cell, the second side of the first side having a length - a - width, a second length of the second side, and a long side of the trapezoid The size is 20% to 50% of the first width ^=~ Ιί/ __Na thin she lies _ · ^ The size of the short side is the width of the first - to Wei, the protrusion of the ladder The height of the protrusion is not greater than the height of the barrier wall 10. (4) the distance between the sides, and the (four) rotation degree "this ^1 9. The plasma is as described in the request item a rear panel structure, wherein the barrier wall is configured to have the same height as the longitudinal barrier walls as described in the claims. The two-sided directional barrier is as described in claim 1. The plasma display rear panel structure, wherein the lateral heights have a height difference from the longitudinal ridges and the partition walls. Λ & 5. The barrier wall system 12. The plasma display rear panel structure according to claim 1, wherein The substrate is made of glass. The material is the material of the rear panel structure of the plasma display device according to claim 1, wherein the manufacturing method of the transverse direction and the longitudinal direction is a sand blasting method or an etching method. For example, the plasma display rear panel structure described in item i, wherein the protruding method is a mouth sand method or an etching method. 13. , ..., 1 1 wide '丨 from ~% take>, example '丨, Speaking of ^ singularity, soldiers should choose this __ next door production 17