JP2008234972A - Color display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize one color among three primary colors of an image for a color display device by combining a plurality of gas discharge tubes using different fluorescent materials. <P>SOLUTION: In the color display device 10, a fluorescent layer is formed in the inside of the color display device, the inside is filled with a discharge gas, a plurality of gas discharge tubes 11 respectively having a plurality of light-emitting points in a longitudinal direction, are arranged in parallel, a plurality of pairs of display electrodes 2 are arranged on the surface sides of the plurality of gas discharge tubes, and a plurality of signal electrodes 3 are arranged on the rear sides of the plurality of gas discharge tubes. The plurality of gas discharge tubes 11 are formed by a plurality of adjacent groups of the gas discharge tubes. Fluorescent layers 11G<SB>1</SB>, 11G<SB>2</SB>of one group of gas discharge tubes among the plurality of groups and fluorescent layers 11R<SB>1</SB>, 11R<SB>2</SB>; 11B<SB>1</SB>, 11B<SB>2</SB>of another adjacent group different from the one group show two primary colors among three primary colors. Two adjacent gas discharge tubes among one group of gas discharge tubes, have different characteristics from each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display device having a multicolor phosphor layer, and more particularly, to a display device including a plurality of gas discharge tubes each having a phosphor layer of a different material.

As a thin color display device using a discharge light emitting element, for example, as disclosed in JP-A-2004-178854 (Patent Document 1), JP-A-11-162358 (Patent Document 2), etc. A display panel (PDP) is known.
JP 2004-178854 A Japanese Patent Laid-Open No. 11-162358

Japanese Patent Laid-Open No. 11-191368 (Patent Document 3) discloses a method for producing a multicolor phosphor screen of a color plasma display panel. The manufacturing method differs by a photoresist film method so that phosphor-containing barrier ribs containing phosphors of each color are sandwiched between phosphor-containing barrier ribs of the same color on the substrate. After setting the phosphor-containing barrier ribs to be back-to-back, the corresponding color phosphor is embedded in each cell sandwiched between the phosphor-containing barrier ribs of the same color of the substrate with barrier ribs and fired. Fix it. The phosphor is embedded in the cell by directly embedding the paste-like phosphor-containing composition, or by embedding the paste-like phosphor-containing composition in a state where a necessary portion is masked using a photoresist film, or This is done by embedding a hardened resist derived from the phosphor-containing photoresist film. A highly reliable color plasma display panel with higher definition is manufactured.
Japanese Patent Laid-Open No. 11-191368

  When a plasma tube array is used, a large display device can be easily assembled, and a display device having a curved display surface can be easily realized. On the other hand, depending on the color phosphor material used, brightness, color purity, discharge voltage, optimum gas pressure, optimum gas type, optimum tube material and dimensions (outer diameter, width, height, outer wall ), The discharge start voltage, the optimal arrangement size and shape of the signal electrode (particularly, the cross-sectional shape and the cross-sectional area), the resistance value per length of the signal electrode (Ω / m), and the like are different. Accordingly, when a plurality of types of phosphor materials having different characteristics are used in one plasma tube, the characteristics of the respective materials cannot be sufficiently exhibited.

  The inventors used different phosphor materials of the same color system for each one of the three primary colors, and combined and used a plurality of plasma tubes having conditions suitable for each phosphor material, It has been recognized that a plasma tube array having color purity, brightness, color area ratio, color balance and brightness balance suitable for display device applications can be realized.

  An object of the present invention is to realize one of the three primary colors of an image for a color display device by a combination of a plurality of gas discharge tubes using different phosphor materials.

  According to a feature of the present invention, a color display device includes a phosphor layer formed therein, a discharge gas sealed therein, and a plurality of gas discharge tubes each having a plurality of light emitting points in the longitudinal direction. A plurality of pairs of display electrodes are arranged on the display surface side of the plurality of gas discharge tubes, and a plurality of signal electrodes are arranged on the back side of the plurality of gas discharge tubes. The plurality of gas discharge tubes includes a plurality of adjacent gas discharge tubes. The phosphor layer of one set of gas discharge tubes in the plurality of sets and the phosphor layer of another set of gas discharge tubes adjacent thereto represent two different primary colors of the three primary colors. . Two adjacent gas discharge tubes in the set of gas discharge tubes have different characteristics.

  According to the present invention, one of the three primary colors of an image for a color display device can be realized by a combination of a plurality of gas discharge tubes using different phosphor materials.

  Embodiments of the present invention will be described with reference to the drawings. In the drawings, similar components are given the same reference numerals.

  FIG. 1 illustrates a schematic partial structure of a unit 300 of an array of plasma tubes or gas discharge tubes 11R, 11G and 11B for a conventional color display device. In FIG. 1, a plasma tube array (PTA) unit 300 comprises a transparent elongated color plasma tube 11R, 11G and 11B array, transparent front support sheet or thin substrate arranged in parallel to each other. A front-side support substrate 31, a transparent or opaque back-side support sheet or back-side support substrate 32 made of a thin substrate, a plurality of display electrode pairs or main electrode pairs 2, and a plurality of signal electrodes or address electrodes 3. It is out. In FIG. 1, X represents a sustain electrode or X electrode of the display electrode 2, and Y represents a scan electrode or Y electrode of the display electrode 2. R, G, and B indicate red, green, and blue, which are emission colors of the phosphor. The support substrates 31 and 32 are made of, for example, a flexible PET film or glass.

  The narrow tubes 20 of the elongated plasma tubes 11R, 11G, and 11B are made of a transparent insulator, such as borosilicate glass, Pyrex®, soda glass, quartz glass, or zerodur, and typically have a tube diameter. 2 mm or less, for example, the cross-sectional width of the tube is about 1 mm and the height is a flat type slightly smaller than the width, the length is 300 mm or more, and the tube wall has a thickness of about 0.1 mm. .

  The plasma tubes 11R, 11G, and 11B have red, green, and blue (R, G, B) phosphor layers 4 formed on the back side of the inside thereof, and discharge gas is introduced into the inside thereof, and both ends are It is sealed. An electron emission film 5 made of MgO is formed on the inner surfaces of the plasma tubes 11R, 11G, and 11B. The phosphor layers R, G, B typically have a thickness in the range of about 10 μm to about 50 μm. The phosphor layers R, G, and B are formed by a method known in the art such as a sedimentation method.

  The electron emission film 5 generates charged particles by collision with the discharge gas. The phosphor layer 4 generates visible light by vacuum ultraviolet light generated when the discharge gas sealed in the tube excited by applying a voltage to the display electrode pair 2 is de-excited.

  FIG. 2A shows a front support substrate 31 on which a plurality of transparent display electrode pairs 2 are formed. FIG. 2B shows a back side support substrate 32 on which a plurality of signal electrodes 3 are formed.

  The signal electrode 3 is formed on the front surface, that is, the inner surface of the back-side support substrate 32, and is provided along the longitudinal direction of the plasma tube 11. The pitch between the adjacent signal electrodes 3 is the same as the width of each plasma tube 11 and is, for example, 1 mm. The plurality of display electrode pairs 2 are formed on the back surface, that is, the inner surface of the front-side support substrate 31 in a known form, and are arranged in a direction that intersects the signal electrodes 3 at a right angle. The width of the display electrode 2 is, for example, 0.75 mm, and the distance between the edges of each pair of display electrodes 2 is, for example, 0.4 mm. A distance serving as a non-discharge region or a non-discharge gap is secured between the display electrode pair 2 and the adjacent display electrode pair 2, and the distance is, for example, 1.1 mm.

  The signal electrode 3 and the display electrode pair 2 are brought into contact with the lower outer peripheral surface portion and the upper outer peripheral surface portion of the plasma tube 11 when the plasma tube array 300 is assembled. In order to improve the adhesion, an adhesive may be interposed between each electrode and the plasma tube surface to bond them.

  When this plasma tube array 300 is viewed from the front, the intersection of the signal electrode 3 and the display electrode pair 2 becomes a unit light emitting region. In the display, one of the display electrode pairs 2 is used as the scanning electrode Y, a selective discharge is generated at the intersection of the scanning electrode Y and the signal electrode 3, and a light emitting region is selected. By using wall charges formed on the inner surface of the tube, a display discharge is generated at the display electrode pair 2 to emit light from the phosphor layer. The selective discharge is a counter discharge generated in the plasma tube 11 between the scanning Y electrode and the signal electrode 3 facing each other in the vertical direction. The display discharge is a surface discharge generated in the plasma tube 11 between a pair of display electrodes arranged in parallel on a plane.

  The display electrode pair 2 and the signal electrode 3 can generate a discharge in the discharge gas inside the tube by applying a voltage. In FIG. 1, the electrode structure of the plasma tube 11 is a structure in which three electrodes are arranged in one light emitting portion and a display discharge is generated by the display electrode pair 2, but is not limited thereto. Instead of this, a structure in which display discharge is generated between the display electrode 2 and the signal electrode 3 may be employed. That is, an electrode structure in which the display electrode pair 2 is one and a selective discharge and a display discharge (opposite discharge) are generated between the display electrode 2 and the signal electrode 3 using the display electrode 2 as a scanning electrode may be used.

FIG. 3 shows the structure of a cross section perpendicular to the longitudinal direction of the tubes of the plasma tube array 11 of the PTA unit 300. In the PTA unit 300, the phosphor tubes 4R, 4G, and 4B are formed on the inner surfaces of the plasma tubes 11R, 11G, and 11B. For example, the cross-sectional width is 1.0 mm, the cross-sectional height is 0.7 mm, and the tube wall It consists of a thin tube having a thickness of 0.1 mm and a length of 1 m to 3 m. As an example, three different red phosphors 4R ₁ , 4R ₂ , 4R ₃ include yttria-based ((Y.Ga) BO ₃ : Eu) materials with different composition ratios, and _three different green phosphors The phosphors 4G ₁ , 4G ₂ , 4G ₃ contain zinc silicate (Zn ₂ SiO ₄ : Mn) materials having different composition ratios, and the _three different blue phosphors 4B ₁ , 4B ₂ , 4B ₃ have different compositions. BAM-based (BaMgAl ₁₀ O ₁₇ : Eu) material. In addition, as a matter of course, the phosphors may not be the same system, and phosphorous red (P ₂ O ₅ : Er), 4G ₁ , 4G ₂ may be included in part or all of 4R ₁ , 4R ₂ , 4R _3. (P ₂ O ₅ : Tb) or the like may be used for part or all of 4G ₃ .

  In FIG. 3, the back side support substrate 32 is bonded to the bottom surfaces of the plasma tubes 11R, 11G, and 11B via an adhesive layer. Signal electrodes 3R, 3G, and 3B are disposed on the bottom surfaces of the plasma tubes 11R, 11G, and 11B and on the top surface of the back-side support substrate 32. The signal electrode 3 may be directly formed on the bottom surfaces of the plasma tubes 11R, 11G, and 11B.

  FIG. 4 shows the electrical connection of the address (A) electrode driver device 400, the X electrode driver device 500, and the Y electrode driver device 700 to the PTA unit 300 of the display device 10. In the display device 10, n pairs of display electrodes 2 (X1, Y1),. . . , (Xj, Yj),. . . The X electrode in (Xn, Yn) is connected to the sustain voltage pulse circuit (SST) 50 for the X electrode of the X electrode driver device 500, and the Y electrode therein is the scan pulse circuit ( SCN) 70. m signal electrodes 3A1,. . . , Ai,. . . Am is connected to the address driver circuit 46 of the A electrode driver device 400. The X electrode driver device 500 further includes a reset circuit 51. Y electrode driver device 600 further includes sustain voltage pulse circuit 60 and reset circuit 61. A driver control circuit (CTRL) 42 is connected to the A electrode driver device 400, the X electrode driver device 500, and the Y electrode driver device 600.

Next, an example of a driving method of a general plasma tube array type AC gas discharge display device will be described. One picture (video) is typically composed of one frame period. One frame is composed of two fields in interlaced scanning, and one frame is composed of one field in progressive scanning. . In addition, in order to display a moving image by a normal television system, it is necessary to display 30 or 60 frames per second. Therefore, in the display by this type of gas discharge display device 10, in order to perform color reproduction with gradation by binary light emission control, typically, one such field F is a set of q subfields SF. Replace with Often, these subfields SF are sequentially ordered by 2 ⁰ , 2 ¹ , 2 ² ,. . . 2 Set the number of display discharges in each subfield SF with different weights such as ^q-1 . The luminance setting of N (= 1 + 2 ¹ +2 ² + ... + 2 ^q-1 ) steps can be performed for each color of R, G, and B by a combination of light emission / non-light emission in subfield units. A field period Tf, which is a field transfer period, is divided into q subfield periods Tsf in accordance with such a field configuration, and one subfield period Tsf is assigned to each subfield SF. Further, the subfield period Tsf is divided into a reset period TR for initialization, an address period TA for addressing, and a display period TS for light emission by sustain discharge. Typically, the length of the reset period TR and the address period TA is constant regardless of the weight, whereas the number of pulses in the display period TS increases as the weight increases, and the length of the display period TS increases. So long. In this case, the length of the subfield period Tsf is longer as the weight of the corresponding subfield SF is larger.

  FIG. 5 illustrates a schematic drive sequence of output drive voltage waveforms of the X electrode driver device 500, the Y electrode driver device 700, and the A electrode driver device 400 in the display device 10. The illustrated waveform is an example, and the amplitude, polarity, and timing can be changed variously.

The order of the reset period TR, the address period TA, and the sustain period TS is the same in the q subfields SF, and the driving sequence is repeated for each subfield SF. In the reset period TR of each subfield SF, a negative pulse Prx1 and a positive pulse Prx2 are sequentially applied to all the display electrodes X, and a positive pulse Pry1 is applied to all the display electrodes Y. A negative pulse Pry2 is applied in order. The pulses Prx1, Pry1, and Pry2 are ramp waveforms or blunt wave pulses that gradually increase in amplitude at the rate of change at which minute discharge occurs. The first applied pulses Prx1 and Pry1 are applied in order to once generate moderate wall charges of the same polarity in all the discharge cells regardless of light emission / non-light emission in the previous subfield SF. Subsequently, by applying the pulses Prx2 and Pry2 to the discharge cell in which an appropriate wall charge exists, the wall charge is adjusted so as to be reduced to a level (erase state) that is not redischarged by the sustain pulse. The drive voltage applied to the cell is a combined voltage that represents the difference in the amplitude of the pulses applied to the display electrodes X and Y. Second subfield subsequent in each field _{F V} SF2. . . In, the reset period TR may be shortened and only the negative polarity pulse Pry2 may be applied.

In the address period TA, wall charges necessary for maintaining the discharge are formed only in the discharge cells that emit light. With all display electrodes X and all display electrodes Y biased to a predetermined potential, a negative scan pulse -Vy is applied to the display electrode Y corresponding to the selected row for each row selection period (scanning time for one row). Apply. Simultaneously with this row selection, the address pulse Va is applied only to the address electrode A corresponding to the selected cell in which the address discharge is to be generated. That is, the potentials of the address electrodes A _{1 to} A _m are binary-controlled for each scanning line based on the subfield data Dsf for m columns of the selected row j. As a result, an address discharge is generated in the discharge tube between the display electrode Y and the address electrode A in the selected cell. Display data written by the address discharge is stored in the form of wall charges on the cell inner wall of the discharge tube, and the surface discharge between the display electrodes XY is generated by the subsequent application of the sustain pulse.

  In the sustain period TS, a sustain pulse Ps having a polarity (positive polarity in the example shown in the figure) that is added to the wall charges generated in the previous address discharge and generates a sustain discharge is applied. Thereafter, the sustain pulse Ps is alternately applied to the display electrode X and the display electrode Y. The amplitude of the sustain pulse Ps is the sustain voltage Vs. By applying the sustain pulse Ps, a surface discharge is generated in a discharge cell in which a predetermined wall charge remains. The number of times the sustain pulse Ps is applied corresponds to the weight of the subfield SF as described above. Note that the address electrode A may be biased to the voltage Vas having the same polarity as the sustain pulse Ps in order to prevent unnecessary counter discharge throughout the sustain period TS.

  FIG. 6 shows a table of relative evaluation levels of brightness, color purity and tube width of a plasma tube using different phosphor materials of the three primary colors of red, green and blue. Each color phosphor material is best suited to maximize its properties, such as gas species (eg, neon, xenon, helium, krypton and argon mixing ratio, partial pressure ratio), gas pressure (eg, 400- A suitable value in the range of 550 Torr), tube material (e.g. borosilicate glass, Pyrex (R), soda glass, quartz glass or zerodur), tube diameter or tube width (e.g. Suitable value), tube wall thickness (for example, 0.1 to 0.2 mm), signal electrode width (for example, cross-sectional width 0.25 to 0.6 mm), signal electrode resistance value (for example, 1 to 10Ω / m).

In the table of FIG. 6, for example, the red light, a combination of plasma tube 11R ₁ and 11R ₂ using each phosphor material R1 and R2 on the display device 10. The phosphor material R1 has a high luminance of level 8, a medium color purity of level 5, and a medium tube width of level 5. The phosphor material R2 has a medium level 6 brightness, a level 6 medium color purity, and a large level 9 tube width. By the plasma tube 11R ₁ and 11R _2, it can be expressed red higher than the synthetic luminance.

Further, for example, the red light, a combination of plasma tube 11R ₁ and 11R ₃ using each phosphor material R1 and R3 on the display device 10. The phosphor material R3 has a moderate brightness of level 5, a high color purity of level 9, and a medium tube width of level 5. By the plasma tube 11R ₁ and 11R _3, it can represent higher luminance and higher color purity than has been synthesized.

  In the table of FIG. 6, the same can be said for the display of green and blue.

FIG. 7 illustrates the longitudinal direction of three sets of plasma tubes (11R ₁ , 11R ₂ ), (11G ₁ , 11G ₂ ), (11B ₁ , 11B ₂ ) of red, green and blue according to an embodiment of the present invention. A vertical sectional view is shown. A pair of two plasma tubes 11R ₁ and 11R ₂ have different phosphor materials 4R ₁ , 4R ₂ , different gas pressures and different gas mixing ratios, and are bonded or fused together on adjacent outer wall sides. Yes. A pair of plasma tube 11G ₁ and 11G ₂ in two are different phosphor materials _4G 1, 4G _2, compared mixed different gas pressures and different gas, are bonded or fused together in adjacent outer wall side. Two sets of plasma tubes 11B ₁ and 11B ₂ are bonded or fused together on adjacent phosphor wall surfaces with different phosphor materials 4B ₁ , 4B ₂ , different gas pressures and different gas mixing ratios.

As a method of adhering a set of two plasma tubes, the respective side surfaces may be fused to each other by heat with a low-melting glass interposed therebetween, or may be adhered with an insulating adhesive. Thereby, one set of plasma tubes (11R ₁ , 11R ₂ ), (11G ₁ , 11G ₂ ) or (11B ₁ , 11B ₂ ) can be handled in the unit of the set. Thereby, in the display device 10, the same color system display lines having a wide range of good characteristics in the direction perpendicular to the longitudinal direction of the tube can be obtained. In some cases, each set of two plasma tubes (11R ₁ , 11R ₂ ), (11G ₁ , 11G ₂ ), (11B ₁ , 11B ₂ ) of the same color system is the same type (R ₁ = R ₂ , 11G ₁ = 11G ₂ and / or 11B ₁ = 11B ₂ ). Thereby, in the display device 10, a wide range of the same color display lines having the same characteristics can be obtained in a direction perpendicular to the longitudinal direction of the tube.

FIG. 8 illustrates another set of plasma tubes (11R ₁ , 11R ₃ ), (11G ₁ , 11G ₃ ), (11B ₁ , 11B ₃ ) of red, green and blue according to another embodiment of the present invention. 1 shows a cross-sectional view perpendicular to the longitudinal direction. A set of two plasma tubes 11R ₁ and 11R ₃ have different phosphor materials 4R ₁ , 4R ₃ , different gas pressures and different gas mixing ratios, and are bonded or fused together on the adjacent outer wall sides. Yes. Two sets of plasma tubes 11G ₁ and 11G ₃ are bonded or fused together at different phosphor materials 4G ₁ , 4G ₃ , different gas pressures and different gas mixing ratios, and on adjacent outer wall sides. A pair of plasma tube 11B ₁ and 11B ₃ with two are different fluorescent materials _4B 1, 4B _3, compared mixed different gas pressures and different gas are mutually bonded or fused in the adjacent outer wall side.

The plasma tubes 11R ₁ , 11G ₁ and 11B ₁ have a gas pressure of 485 Torr, an axial tube width of 0.5 mm parallel to the surface of the back support substrate 32, and an axial tube width of 0. 0 mm perpendicular to the surface. The plasma tubes 11R ₃ , 11G ₃ and 11B ₃ have a gas pressure of 450 Torr, an axial tube width of 0.7 mm parallel to the surface of the back support substrate 32 and an axial direction perpendicular to the surface The tube width is 0.5 mm.

For example, a plasma tube 11G ₁ is the color purity is low, the gas pressure of the discharge gas increased to increase the amount of light emission is high luminance. On the other hand, the plasma tube 11G ₃ is the color purity is high, because of the low luminance, to shorten the rise time lower the discharge starting voltage by reducing the gas pressure. The combination of the plasma tube 11G ₁ and 11G _3, the sensitive low luminance for the color purity of the viewer, as the discharge of the plasma tube 11G ₁ is dominant in the high luminance less sensitive to color purity, by emitting both plasma tube 11G ₁ and 11G _3, it performs a representation of color which is suitable for visual characteristics of the viewer.

FIG. 9 illustrates yet another three sets of plasma tubes (11R ₁ , 11R ₄ ), (11G ₁ , 11G ₄ ), (11B ₁ , 11B ₄ ) of red, green and blue according to yet another embodiment of the present invention. ) Is a cross-sectional view perpendicular to the longitudinal direction. Two sets of plasma tubes 11R ₁ and 11R ₄ have different phosphor materials 4R ₁ , 4R ₄ , different gas pressures and different gas mixing ratios, and are bonded or fused together on the adjacent outer wall sides. Yes. The two sets of plasma tubes 11G ₁ and 11G ₄ have different phosphor materials 4G ₁ , 4G ₄ , different gas pressures and different gas mixing ratios, and are bonded or fused together on the side surfaces of the adjacent outer walls. The two sets of plasma tubes 11B ₁ and 11B ₄ are bonded or fused together on adjacent phosphor wall surfaces with different phosphor materials 4B ₁ , 4B ₄ , different gas pressures and different gas mixing ratios.

The plasma tubes 11R ₁ , 11G ₁ and 11B ₁ have, for example, a gas pressure of 450 Torr and a tube wall thickness of 80 μm, and the plasma tubes 11R ₄ , 11G ₄ and 11B ₄ have, for example, a gas pressure of 450 Torr and a tube wall thickness. It has a thickness of 95 μm.

For example, a plasma tube 11G ₁ is a high purity, because of the low luminance, to shorten the rise time lower the discharge starting voltage by reducing the wall thickness. On the other hand, the plasma tube 11G ₄ is color purity is low because of the high brightness, to increase the rise time by increasing the discharge start voltage to increase the Irokan wall thickness. The combination of the plasma tube 11G ₁ and 11G _4, the sensitive low luminance for the color purity of the viewer, as the discharge of the plasma tube 11G ₁ is dominant in the high luminance less sensitive to color purity, by emitting both plasma tube 11G ₁ and 11G _4, it performs a representation of color which is suitable for visual characteristics of the viewer.

10A and 10B illustrate tubular structure for fitting together a set of plasma tubes 11R ₁ and 11R ₂ in two, and the procedures for their Mate.

As shown in FIG. 10A, the right side surface for bonding the outer wall of the plasma tube 11R ₁ and the left side surface for bonding the outer wall of the plasma tube 11R ₂ have an upper portion and a lower portion protruding from the side surfaces, respectively. , Having complementary shapes that fit or engage with each other. In other words, one bonding surface has a negative (negative) shape of the other bonding surface.

As shown in FIG. 10B, the right side surface for bonding the outer wall of the plasma tube 11R ₁ and the left side surface for bonding the outer wall of the plasma tube 11R ₂ are fitted or engaged with each other to bond or melt. Put on.

11A and 11B show a tube structure for fitting a set of three plasma tubes 11R ₁ , 11R ₂ and 11R ₃ to each other, and a procedure for fitting them.

As shown in FIG. 11A, the right side surface for bonding the outer wall of the plasma tube 11R ₁ and the left side surface for bonding the outer wall of the plasma tube 11R ₃ have an upper portion and a lower portion protruding from the side surfaces, respectively. has a complementary shape to fit or engage with each other, the left side surface of the adhesive on the right side and the outer wall of the plasma tube 11R ₂ for adhesion of the outer wall of the plasma tube 11R ₃ are on each part and lower The portions protrude from the sides and have complementary shapes that fit or engage with each other.

As shown in FIG. 11B, the left side of the adhesive of the right side surface and the outer wall of the plasma tube 11R ₃ for bonding the outer wall of the plasma tube 11R _1, adhesive or fusion is engaged fit or engaged with each other is dressed, the left side of the adhesive of the right side surface and the outer wall of the plasma tube 11R ₂ for adhesion of the outer wall of the plasma tube 11R _3, adhering or fusing engaged fit or engage with each other.

  In this way, it is possible to facilitate handling by adopting a structure in which adjacent side surfaces of a pair of plasma tubes are fitted or engaged and bonded or fused to each other. This facilitates assembly of the plasma tube array.

  The embodiments described above are merely given as typical examples, and it is obvious to those skilled in the art to combine the components of each embodiment, and variations and variations thereof will be apparent to those skilled in the art. It will be apparent that various modifications of the embodiments can be made without departing from the scope of the invention as set forth in the scope.

Regarding the embodiment including the above examples, the following additional notes are further disclosed.
(Appendix 1) Inside, a phosphor layer is formed and a discharge gas is enclosed, and a plurality of gas discharge tubes each having a plurality of light emitting points in the longitudinal direction are juxtaposed, and the display surface side of the plurality of gas discharge tubes A plurality of pairs of display electrodes, and a plurality of signal electrodes arranged on the back side of the plurality of gas discharge tubes,
The plurality of gas discharge tubes are composed of a plurality of adjacent gas discharge tubes,
The phosphor layer of one set of gas discharge tubes in the plurality of sets and the phosphor layer of another set of gas discharge tubes adjacent thereto represent two different primary colors among the three primary colors. ,
A color display device, wherein two adjacent gas discharge tubes in the set of gas discharge tubes have different characteristics from each other.
(Supplementary note 2) The color display device according to supplementary note 1, wherein two adjacent gas discharge tubes in the one set of gas discharge tubes include phosphor materials different from each other.
(Supplementary note 3) The color display according to Supplementary note 1 or 2, wherein two adjacent gas discharge tubes in the one set of gas discharge tubes have different tube dimensions. apparatus.
(Additional remark 4) Two adjacent gas discharge tubes in the said one set of gas discharge tubes have an electrode size shape which is mutually different, The additional remarks 1 thru | or 3 characterized by the above-mentioned. Color display device.
(Supplementary note 5) The color display device according to any one of supplementary notes 1 to 4, wherein adjacent gas discharge tubes in each of the plurality of sets are bonded to each other.
(Supplementary note 6) The color display device according to supplementary note 5, wherein the adjacent gas discharge tubes in each of the plurality of sets are fused to each other.
(Supplementary note 7) The color display device according to any one of supplementary notes 1 to 6, wherein the contact side surfaces of the adjacent gas discharge tubes in each set have a surface shape fitted to each other.
(Supplementary note 8) The two adjacent gas discharge tubes in the another set of gas discharge tubes contain substantially the same phosphor material, and are described in any one of Supplementary notes 1 to 7, Color display device.
(Supplementary note 9) Any one of Supplementary notes 1 to 8, wherein two adjacent gas discharge tubes in the one set of gas discharge tubes have substantially the same tube size and shape. The color display device described in 1.
(Supplementary note 10) Any one of Supplementary notes 1 to 9, wherein two adjacent gas discharge tubes in the one set of gas discharge tubes have substantially the same electrode size and shape. The color display device described in 1.

FIG. 1 illustrates a schematic partial structure of an array of plasma tubes or gas discharge tubes for a conventional color display device. FIG. 2A shows a front side support substrate on which a plurality of transparent display electrode pairs are formed. FIG. 2B shows a back-side support substrate on which a plurality of signal electrodes or signal electrodes are formed. FIG. 3 shows the structure of a cross section perpendicular to the longitudinal direction of the tubes of the plasma tube array of the PTA unit. FIG. 4 shows the electrical connection of the A electrode driver device, the X electrode driver device, and the Y electrode driver device to the PTA unit of the display device. FIG. 5 illustrates a schematic drive sequence of output drive voltage waveforms of the X electrode driver device, the Y electrode driver device, and the A electrode driver device in the display device 10. FIG. 6 shows a table of relative evaluation levels of brightness, color purity and tube width of a plasma tube using different phosphor materials of the three primary colors of red, green and blue. FIG. 7 shows a cross-sectional view perpendicular to the longitudinal direction of three sets of plasma tubes of red, green and blue according to an embodiment of the present invention. FIG. 8 shows a cross-sectional view perpendicular to the longitudinal direction of three other sets of plasma tubes of red, green and blue according to another embodiment of the present invention. FIG. 9 shows cross-sectional views perpendicular to the longitudinal direction of three other sets of plasma tubes of red, green and blue according to yet another embodiment of the present invention. FIGS. 10A and 10B illustrate a tube structure for fitting two sets of plasma tubes together, and a procedure for fitting them. 11A and 11B show a tube structure for fitting a set of three plasma tubes to each other, and a procedure for fitting them.

Explanation of symbols

10 color display device 300 plasma tube array unit 31 front-side supporting substrate 32 rear side supporting board 2 display electrodes 3 signal electrode 4 phosphor layer 11 plasma tube _11R 1, 11R ₂ red pair of plasma tube 11G ₁ , 11G ₂ green set of plasma tubes 11B ₁ , 11B ₂ blue set of plasma tubes

Claims (5)

Inside, a phosphor layer is formed and a discharge gas is enclosed, and a plurality of gas discharge tubes each having a plurality of light emitting points in the longitudinal direction are juxtaposed, and a plurality of pairs are disposed on the display surface side of the plurality of gas discharge tubes. A color display device in which display electrodes are arranged and a plurality of signal electrodes are arranged on the back side of the plurality of gas discharge tubes,
The plurality of gas discharge tubes are composed of a plurality of adjacent gas discharge tubes,
The phosphor layer of one set of gas discharge tubes in the plurality of sets and the phosphor layer of another set of gas discharge tubes adjacent thereto represent two different primary colors among the three primary colors. ,
A color display device, wherein two adjacent gas discharge tubes in the set of gas discharge tubes have different characteristics from each other.   2. The color display device according to claim 1, wherein two adjacent gas discharge tubes in the set of gas discharge tubes include phosphor materials different from each other.   3. The color display device according to claim 1, wherein two adjacent gas discharge tubes in the set of gas discharge tubes have different tube dimensions.   The color display device according to claim 1, wherein adjacent gas discharge tubes in each of the plurality of sets are bonded to each other.   5. The color display device according to claim 1, wherein the contact side surfaces of adjacent gas discharge tubes in each set have surface shapes that fit with each other.

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