JP2007078777A - Display device and method for driving the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin display device which is simple in configuration, easy to manufacture, and highly efficient, and to provide a method for driving the same. <P>SOLUTION: The display device comprises: first insulators 4 opposing each other; a light emitting body 2 interposed between the first insulators and containing phosphor particles; a second insulator 5 serving as the base of the first insulators 4 and the light emitting body 2; one electrode 6 part of which opposes the first insulator 4 via an insulating layer 11 or which is arranged; another electrode 10 which contacts the second insulator 5 and which is formed so that the second insulator 5 is interposed between the electrode 6 and the electrode 10; a translucent substrate 8 provided at a position opposing the second insulator 5; and a driving device for performing display by a series of sequences from the first term to the third term. The driving device properly controls the portion occupied by the light emitting body 2 out of the space formed in this configuration, and effectively controls emission and extinction of light by applying different voltages to the electrodes respectively. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display device and a display device driving method. In particular, the present invention relates to a thin display that is simple in structure, easy to manufacture, and highly efficient, and a driving method thereof.

  Display devices, especially electroluminescent displays (ELD), plasma displays (PDP), field emission displays (FED), etc., which are also used for display applications, have been researched and developed in various aspects, and have higher image quality, Highly efficient displays are being pursued. Taking ELD and FED as examples, Non-Patent Document 1 generally describes ELD as follows. One example is based on a structure in which an electric field is applied to a phosphor as a light emitting layer via an insulating layer, and an organic dispersion type and a thin film type are known. The organic dispersion type has a structure in which ZnS particles added with impurities such as Cu are dispersed in an organic substance, an insulating layer is formed thereon, and sandwiched between upper and lower electrodes. The impurities form a pn junction in the phosphor particles, and when an electric field is applied, electrons emitted by a high electric field generated at the junction surface are accelerated, and then recombined with holes to emit light. Another example has a structure in which a phosphor thin film such as Mn-doped ZnS, which is a light emitting layer, is disposed between electrodes via an insulator layer. The presence of the insulator layer makes it possible to apply a high electric field to the light emitting layer, and emitted electrons accelerated by the electric field excite the light emission center to emit light. On the other hand, the FED has a structure composed of an electron emission device and a phosphor facing the electron emission device in a vacuum container, and accelerates electrons emitted from the electron emission device into the vacuum to irradiate the phosphor layer to emit light. It is.

In any device, electron emission is a trigger for light emission, so a technique for emitting electrons with low voltage and high efficiency is important. As such a technique, attention is focused on electron emission by polarization inversion of a ferroelectric. For example, in Non-Patent Document 2, as shown in FIG. 15, a PZT ceramic 101 having a planar electrode 102 installed on one surface and a grid electrode 103 installed on the other surface is gridded in a vacuum vessel 106. It has been proposed that electrons are emitted by facing the platinum electrode 104 through the electrode 105 and applying a pulse voltage between the electrodes. Reference numeral 107 denotes an exhaust port. According to the proposal, the pressure in the container is 1.33 Pa (10 ⁻² Torr), and it is described that no discharge occurs at atmospheric pressure.

  Patent Document 1 and Patent Document 2 describe a display in which electrons emitted by the polarization inversion of the ferroelectric substance are accelerated in a vacuum container to cause the phosphor layer to emit light, or a display using this light emission. The basic configuration is such that the phosphor layer emits light by replacing the platinum electrode of Non-Patent Document 2 with an electrode having a phosphor layer.

  On the other hand, a light emitting device using electrons emitted by polarization reversal of a ferroelectric substance in a non-vacuum is disclosed as an electroluminescent surface light source device in Patent Document 3, for example. As shown in FIG. 16, this device is formed on a substrate 115 in the order of a lower electrode 112, a ferroelectric thin film 111, an upper electrode 113, a carrier multiplication layer 118, a light emitting layer 114, and a transparent electrode 116. The upper electrode has an opening 117. By reversing the applied voltage pulse between the lower electrode and the upper electrode, electrons are emitted from the upper electrode opening to the carrier multiplication layer, and further accelerated by the positive voltage applied to the transparent electrode, while multiplying the electrons. It reaches the light emitting layer and emits light. It is described that the carrier multiplication layer is made of a semiconductor having a relatively low dielectric constant and a band gap that does not absorb the emission wavelength emitted from the light emitting layer. This device can be thought of as a kind of ELD. Further, Patent Document 4 discloses a configuration in which one of the insulators is made of a ferroelectric thin film in a configuration in which a light emitting layer made of a phosphor formed by sputtering is sandwiched between front and back insulating layers and a pulse electric field is applied. Has been.

  Also, an inexpensive planar device having a simple configuration as shown in Patent Document 5 has been proposed by the same applicant as the present application. In this light emitting device, a voltage is applied to two electrodes arranged so as to be in contact with the surface of the porous illuminant to discharge the phosphor, and phosphor particles in the porous illuminant are excited using ultraviolet rays generated by the discharge. To emit light. In addition, as a plasma display that suppresses erroneous discharge and enables improvement in luminance by the same applicant as the present application, the height in the row direction and the column direction of the partition walls forming the discharge space as shown in Patent Document 6 is disclosed. Disclosed is a display panel characterized by having different cross-beam shapes. Further, as shown in Patent Document 7, the same applicant as the present application has proposed a field emission display in which a Spindt emitter and a porous light emitter are stacked on pixels arranged in a matrix.

On the other hand, among the above, there are many driving methods for each display already commercialized.
Japanese Unexamined Patent Publication No. 07-064490 US Pat. No. 5,453,661 Japanese Patent Laid-Open No. 06-283269 Japanese Patent Laid-Open No. 08-083686 JP 2004-200143 A JP 2005-011743 A International Publication No. 2004/051045 Pamphlet Edited by Shoichi Matsumoto, “Electronic Display”, Ohmsha, July 7, 1995, p. 113-125 Jun-ichi Asano et al., 'Field-Exited Electron Emission from Ferroelectric Ceramic in Vacuum', Japane Journal of Applied Physics Vol. 31 Part 1 p. 3098-3101, Sep / 1992

  By the way, important factors that show its superiority in display devices include high brightness, stable brightness, high efficiency, high definition, durability, and the possibility of thinning and large screens. Can be mentioned. Taking the above-mentioned existing devices as a reference, PDP is currently incompatible with high efficiency and high definition, and ELD with a large screen, durability, and simplified manufacturing process. Still leaves many technical challenges.

  In particular, with respect to PDPs for which product development has recently progressed, it is necessary to go through many physical processes before the phosphor emits light, and there is a problem that the light emission efficiency is poor. This is due to the light emission principle. Specifically, first, it is necessary to cause a plasma discharge by applying a voltage to xenon gas, neon gas or the like in the display device. The ultraviolet rays generated by the plasma discharge excite the phosphor applied to the inner wall of the display device to emit red, green, and blue light. Therefore, since PDP has an essential problem due to the light emission principle that many processes until the phosphor emits light, it is difficult to obtain high light emission efficiency. There is a problem that is large.

  Furthermore, in order to realize light emission in the PDP, the cell structure is naturally subject to various restrictions. For example, a sufficient space for discharging a gas such as xenon is required. In addition, the thickness of the illuminant needs to include a sufficient emission center for converting ultraviolet light into visible light, and to have a sufficient thickness for taking out visible light to the front side. However, from the viewpoint that it should not be too thick, a film that is too thick or a thin film may not be acceptable, and an appropriate range of thickness control is required, and the degree of freedom in process design is never great. On the other hand, it is necessary to enclose a gas such as xenon after the display device is evacuated, and there is a problem that the manufacturing equipment becomes large and the cost is high. Further, it tends to be weak against impact for the above reasons.

  On the other hand, from the viewpoint of the configuration of the device used as a display, the selection of the physical properties of the partition walls forming the cells, the appropriate relative positional relationship between the partition walls and the electrodes, the influence of the position and thickness of the light emitter, etc. In order to realize a proposal for a new display to be replaced, it is considered that there are various technical problems to be solved. In order to be a display, it is not necessary to simply emit light, and control of light emission and extinction must be realized. Therefore, even if the prior art disclosed by the same applicant suggests the possibility that it can be applied to a display in the future, the structure of the cell structure in a specific display, the control of light emission and quenching, etc. That is, there is no suggestion regarding the method of driving the display device.

  The present invention has been made in view of such circumstances, and in particular, in forming a device structure for a display, process control is extremely facilitated to improve workability, and is excellent in productivity, and PDP and various ELDs. Provided is a display device that realizes high luminance equivalent to or higher than that of the above, and that has the possibility of high definition, high definition, and large screen. In addition, a display device that can control light emission and extinction and a driving method thereof are also proposed.

  The inventors have conducted research for the purpose of achieving high brightness and high efficiency after removing various restrictions on the device configuration employed in the conventional PDP. As a result, prior to the present application, the inventors have made process control extremely easy to improve processability, have excellent productivity, and have high brightness, high efficiency, high definition and large screen. A light emitting device has been proposed in Japanese Patent Application No. 2005-110599. However, as described above, in order to develop this light emitting device into a display device, it is necessary to realize control of light emission and extinction. The inventors paid particular attention to the peculiarity of the light emission mechanism in the proposed device. The inventors have a great advantage in that the so-called creeping discharge in which electrons flow on the surface of the phosphor particles in the luminescent material is stable, so that the luminance is stabilized during light emission. It was found that some things could be a disaster and could hinder instantaneous quenching.

  Therefore, the inventors have conducted intensive studies and studies to find a quick and reliable quenching means in such a device. As a result, in a configuration in which electrodes that partially face each other through a light emitter are provided, a writing period for determining which pixel to emit light among a plurality of existing pixels, and for maintaining light emission for a predetermined time It has been found that it is necessary to provide a different applied voltage by providing a maintenance period and an erasing period for surely erasing. In addition, the inventors also examined the case where the number of electrodes on one side partially facing each other through the light emitter is two, that is, the case where a configuration in which three electrodes are arranged in one pixel is adopted. As a result, the inventors need to change the mode of the voltage applied in each of the above periods depending on whether the surface discharge is mainly the surface layer of the light emitter or the surface discharge is mainly inside the light emitter. In addition, the present invention has been completed.

  That is, the display device driving method of the present invention includes a first insulator provided at an opposite position, a light emitter including phosphor particles interposed between the first insulators, the first insulator, and the light emission. A second insulator serving as a base of the body, at least one electrode at least partially facing or disposed on the first insulator via an insulating layer, and in contact with the second insulator and the electrode Another electrode provided so as to interpose the second insulator therebetween, and at least partly through the first insulator and in the other part at least through the light emitter and facing the second insulator. A cross section including the first insulator, the second insulator, the light emitter, and the translucent substrate, and extending the first insulator until it is in contact with the translucent substrate. A region surrounded by the first insulator, the second insulator, and the light-transmitting substrate is formed. The relationship between the product and the area occupied by the light emitter is a series of a first period, a second period, and a third period for a display device in which the latter is in the range of 0.2 to 1 with respect to the former 1. Display is performed according to a sequence, and in the first period, one electrode at least partially facing or arranged with respect to the first insulator with an insulating layer interposed therebetween, and one electrode in contact with the second insulator and Between the other electrodes provided so as to interpose the second insulator therebetween, pulse voltages having opposite polarities are applied simultaneously at least temporarily, and in the second period, the insulating layer is applied to the first insulator. One electrode that is at least partially opposed or arranged through the other electrode, and another electrode that is in contact with the second insulator and has the second insulator interposed therebetween. AC pulse voltage is applied between them, and in the third period, the first insulation And an electrode disposed at least partially facing or disposed through an insulating layer, and another electrode provided in contact with the second insulator and interposing the second insulator between the one electrode A voltage whose voltage value decreases with the passage of time is applied between the electrodes.

  The present invention is intended to realize control of light emission and extinction of a display device by applying an appropriate voltage between partially opposed electrodes mainly through a light emitter. By adopting such a driving method, rapid quenching is not hindered by the above-described creeping discharge that causes special characteristics in the structure of the device, and light emission and quenching can be realized with good reproducibility.

  By the way, the invention according to the driving method of the display device described above includes a case in which a part of the electrodes facing each other through the light emitter is a pair for each pixel. There may be a case where two electrodes are used, that is, a configuration in which three electrodes are arranged in one pixel. At this time, among the electrodes at least partly facing or arranged through the insulating layer with respect to the first insulator, one of them is used in the writing period and the other is used in the sustaining period, so that the drive circuit Therefore, the display device can be reduced in cost and reliability.

  In addition, the display device driving method of the present invention includes a first insulator provided at opposite positions, a light emitter including phosphor particles interposed between the first insulators, the first insulator, and the light emission. A second insulator that is a base of the body, a first electrode and a second electrode that are at least partially opposed to the first insulator via an insulating layer, and a second insulator that is in contact with the second insulator and A third electrode provided so as to interpose a second insulator between one electrode or the second electrode, at least partly via the first insulator and partly at least via the light emitter A translucent substrate opposed to the second insulator, wherein the first insulator is the translucent substrate in a cross section including the first insulator, the second insulator, the light emitter, and the translucent substrate. Surrounded by the first insulator, the second insulator, and the light-transmitting substrate, which are formed when extending to contact with The relationship between the area of the region and the area occupied by the light emitter is from the first period, the second period, and the third period with respect to the display device in which the latter is in the range of 0.2 to 1 with respect to the former 1. The display is performed by a series of sequences, and in the first period, the first electrode and the third electrode that are at least partially opposed to or arranged with respect to the first insulator through the insulating layer are opposite to each other. A pulse voltage of polarity is applied at least temporarily at the same time, and in the second period, an alternating current is provided between the first electrode and the second electrode, which are at least partially opposed to or arranged with respect to the first insulator via the insulating layer. A pulse voltage is applied, and in the third period, a voltage value is generated with the passage of time between the first electrode and the second electrode that are at least partially opposed to the first insulator with an insulating layer interposed therebetween. A falling voltage is applied.

  In the present invention, an appropriate voltage is applied mainly between two electrodes existing on one surface side of a light emitter, in other words, between two electrodes provided on one side of an opposing substrate via the light emitter. Thus, it is intended to realize control of light emission and extinction of the display device. It has been found that by adopting such a driving method, rapid quenching is not hindered by the above-described creeping discharge that causes special characteristics in the device configuration, and light emission and quenching can be realized with good reproducibility.

  Next, a display device according to the present invention includes a first insulator provided at an opposite position, a light emitter including phosphor particles interposed between the first insulators, a first insulator, and the light emitter. A second insulator serving as a base, at least one electrode at least partially facing or disposed on the first insulator via an insulating layer, and between and in contact with the second insulator The other electrode provided so as to interpose the second insulator, and the translucency facing the second insulator in part through at least the first insulator and in the other part through at least the light emitter Formed in a cross section including the first insulator, the second insulator, the light emitter, and the light-transmitting substrate, and extending until the first insulator is in contact with the light-transmitting substrate. The area of the region surrounded by the first insulator, the second insulator, and the translucent substrate, and the light emitter A display device in which the latter is in the range of 0.2 to less than 1 with respect to the former 1, and the display is performed by a series of sequences including a first period, a second period, and a third period. A driving device, and in the first period, the driving device is in contact with the second insulator, with one electrode at least partially facing or disposed through the insulating layer with respect to the first insulator, and Pulse voltages of opposite polarities are simultaneously applied at least temporarily to another electrode provided so as to interpose a second insulator between the one electrode and the first insulation in the second period. Another electrode provided such that at least a part of the electrode faces or is arranged with an insulating layer interposed between the body and the second insulator in contact with the second insulator and between the one electrode. AC pulse voltage is applied between the two electrodes In the third period, the second insulator is in contact with the second insulator and between the one electrode that is at least partially opposed to or disposed on the first insulator via the insulating layer. A voltage whose voltage value decreases with the passage of time is applied between other electrodes provided to interpose the body.

  The present invention is intended to realize control of light emission and extinction of a display device by applying an appropriate voltage between partially opposed electrodes mainly through a light emitter. By driving the display device with the above-described driving device, rapid quenching is not hindered even by the above-described creeping discharge that causes special characteristics in the configuration of the device, and light emission and quenching are realized with high reproducibility.

  By the way, although the invention concerning the above-mentioned display device includes the case where the electrode which is partially opposed via the light emitter is one pair for each pixel, two electrodes which are partially opposed via the light emitter are provided. In other words, a configuration in which three electrodes are arranged in one pixel may be employed. At this time, among the electrodes at least partly facing or arranged through the insulating layer with respect to the first insulator, one of them is used in the writing period and the other is used in the sustaining period, so that the drive circuit Therefore, the display device can be reduced in cost and reliability.

  In addition, the display device of the present invention includes a first insulator provided at opposite positions, a light emitter including phosphor particles interposed between the first insulators, a first insulator, and a base of the light emitter. A second insulator serving as a base; a first electrode and a second electrode at least partially opposed to or disposed on the first insulator via an insulating layer; and the first electrode or the second electrode in contact with the second insulator A third electrode provided so that a second insulator is interposed between the second electrode and the second electrode; in part, at least the first insulator; and in the other part, at least the light emitter; A cross-section including a first insulator, a second insulator, the light emitter, and the translucent substrate until the first insulator is in contact with the translucent substrate. A region surrounded by the first insulator, the second insulator, and the light-transmitting substrate is formed when extended. The relationship between the product and the area occupied by the light emitter is a display device in which the latter is in the range of 0.2 to less than 1 with respect to the former 1, and a series of a first period, a second period, and a third period. The driving device performs display according to the above sequence, and the driving device has a third electrode and a third electrode that are at least partially opposed to or disposed in the first period with the insulating layer interposed therebetween. A first electrode in which pulse voltages having opposite polarities are simultaneously applied between the electrodes and at least temporarily, and at least a part of the first electrode is disposed or opposed to the first insulator via an insulating layer in the second period An AC pulse voltage is applied between the first electrode and the second electrode, and in the third period, between the first electrode and the second electrode at least partly facing or arranged with the insulating layer interposed between the first insulator and the second electrode, Voltage whose voltage value decreases with time Applied to.

  In the present invention, an appropriate voltage is applied mainly between two electrodes existing on one surface side of a light emitter, in other words, between two electrodes provided on one side of an opposing substrate via the light emitter. Thus, it is intended to realize control of light emission and extinction of the display device. By driving such a display device with the above-described driving device, rapid quenching is not hindered by the above-described creeping discharge that causes special characteristics in the configuration of the device, and light emission and quenching are realized with good reproducibility.

  In any of the above-described inventions, the special configuration of the display device makes it easy to control the thickness at the time of applying the illuminant, thereby improving productivity and yield. Acquiring a wide range of thickness, in other words, a wide process margin, cannot be achieved by a conventional display device. For example, a PDP that requires a predetermined discharge space This is because it is a completely different light emission mechanism. In addition to the ultraviolet-excited light emission by ultraviolet rays generated by collision of electrons emitted from the electrodes with gas molecules or gas atoms, the electrons emitted from the electrodes are phosphor particles in the luminescent material. A complex mechanism is realized in which light emission centers collide with the surface and are excited by electrons to emit light. In particular, in the latter light emission mechanism, that is, light emission by creeping discharge, it is preferable that at least the surface layer of the light emitter is porous. This is because if the surface layer is porous, creeping discharge occurs in an avalanche and the discharge is sustained, so that the luminance is stabilized. Furthermore, it is more preferable that the entire light emitter is porous, because creeping discharge occurs not only on the surface of the porous light emitter but also inside thereof, and the light emission centers contained in the phosphor particles can be efficiently emitted. . Of course, the display device needs to quickly control the extinction, but this problem can be solved by adopting the above-described driving method or driving apparatus. In addition, as a form of the above-mentioned fluorescent substance particle, spherical shape, needle shape, whisker shape, plate shape is mentioned, for example. In any case, if the phosphor is formed by solidifying powder, there is an advantage that a porous state can be easily formed as a final form.

  In any of the above-described inventions, there is an advantage in production in that replacement encapsulation with a rare gas such as PDP is not particularly required. In any of the above inventions, the “translucent substrate” typically includes a glass substrate, but is not limited thereto. For example, a flexible resin substrate such as acrylic can be applied without substantially impairing the effects of the inventions.

In any of the above-described inventions, a gas is interposed between the light emitter and at least one electrode at least partially facing or disposed on the first insulator, and the gas is at least It is preferably composed of a gas containing oxygen or nitrogen. Even if oxygen or nitrogen is contained, there is no problem in light emission, so that gas replacement is substantially unnecessary, and there is an advantage that the display can be easily manufactured and the manufacturing time can be shortened. The gas is a gas containing at least oxygen or nitrogen, and the volume ratio of oxygen and nitrogen to the whole is preferably 1% or more. Even in the case of a gas containing 1% or more of oxygen and nitrogen, the display device of the present invention emits light without impairing the luminance. Further, the gas is preferably a mixed gas containing at least oxygen or nitrogen and having a volume ratio of 2% or less of the entire xenon gas. Even if xenon is a gas of 2% or less, light can be emitted without impairing the effects of the present invention. As described above, the display device of the present invention does not require gas replacement by a sealing device such as a PDP when performing gas replacement, and does not require strict management of gas in manufacturing the display, and increases the manufacturing time. There is an advantage that it can be shortened. In addition, it does not prevent using rare gas for discharge gas. It is also possible to use a rare gas in that the discharge voltage can be reduced. The gas pressure is preferably 5 × 10 ³ Pa or more and 9 × 10 ⁴ Pa or less.

  Moreover, even if it is any display device mentioned above, it does not prevent that a 1st insulator and a 2nd insulator are the same material. Rather, since it can be molded as a single piece using sandblasting or the like, it is advantageous in terms of process or strength. Further, if the dielectric constant of the first insulator and the second insulator is 5 or more, the effect of the present invention appears. Regarding the dielectric constant, more preferably, one of the dielectric constants of the first insulator and the second insulator is 30 or more, and the other requires 5 or more. More preferably, one of the first insulator and the second insulator is 100 or more and the other is 30 or more. Moreover, although it corresponds to any of the above-mentioned display devices, as a specific example of the first insulator disposed at the opposite position, each of the present embodiments is not limited to the case where the pair of first insulators has a rectangular parallelepiped shape. The case where the pair of first insulators are columnar structures having a trapezoidal cross section as in the embodiment is also included. In any of the display devices described above, the light-transmitting substrate refers to the outermost substrate in the display device. For example, a light-transmitting film provided to cover the electrodes, It does not mean a layer. Further, “at least one electrode at least partly facing or disposed on the first insulator” means that the electrode is disposed on the translucent substrate and partly in contact with the first insulator. Alternatively, not only the case where the electrodes are opposed to each other but also a case where the electrodes are provided on the first insulator and a part of the electrodes are in contact with each other or arranged at positions facing each other.

Moreover, it is preferable that the insulating metal oxide applied as a 1st insulator and a 2nd insulator is comprised with the glass material or the mixed material of a glass material and a metal oxide. This is because it is advantageous in terms of the process of manufacturing a large display by mixing with a glass material and molding. Specific materials include glass, Y ₂ O ₃ , Li ₂ O, MgO, CaO, BaO, SrO, Al ₂ O ₃ , SiO ₂ , MgTiO ₃ , CaTiO ₃ , BaTiO ₃ , SrTiO ₃ , ZrO. ₂ , TiO ₂ , B ₂ O ₃ , Pb (Zr, Ti) O ₃ , and PbTiO ₃ are used. In any of the above-described insulators, the effect of the present invention will be remarkably exhibited if the mixing ratio is selected so that the dielectric constant is not less than the above-described value. The glass material is preferably a so-called low-melting glass having a glass transition temperature of 600 ° C. or lower, such as borosilicate glass, because it is easy to manufacture.

Moreover, it is preferable that at least one electrode at least partially facing or disposed on the first insulator is covered with an insulating layer. This is because the electrode is advantageous in terms of durability. Furthermore, the insulating layer is preferably a layer containing an alkaline earth metal oxide. This layer protects the electrode from impact by electrons and ions, and improves the durability of the entire device. More specifically, the insulating layer is formed of Y ₂ O ₃ , Li ₂ O, MgO, CaO, BaO, SrO, Al ₂ O ₃ , SiO ₂ , MgTiO ₃ , CaTiO ₃ , BaTiO ₃ , SrTiO ₃ , ZrO _2. , TiO ₂ , B ₂ O ₃ , Pb (Zr, Ti) O ₃ , PbTiO ₃ , a layer containing one or more materials.

  The display device driving method of the present invention realizes light emission and quenching quickly with good control, regardless of the special configuration of the device. And since the display device of this invention is light emission mainly using creeping discharge, a thin film formation process, a vacuum system, and a carrier multiplication layer are not required. In addition, the display device of the present invention makes process control extremely easy to improve processability, is excellent in productivity, and realizes high luminance equivalent to or higher than PDP and ELD with high efficiency. Furthermore, the display device of the present invention realizes light emission and extinction quickly with good control by providing an appropriate driving device, despite a special configuration.

  Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. First, the display device structure in the first embodiment will be described with reference to FIGS.

  FIG. 1 is a perspective view of a display device according to the first embodiment, and FIGS. 2 to 5 are explanatory diagrams of manufacturing steps of the display device according to the first embodiment. In these figures, 1 is a display device, 2 is a phosphor containing phosphor particles, 4 is a first insulator, 5 is a second insulator, 6 is a first electrode, 7 is a second electrode, and 8 is a translucent light. 9 is a gas layer, 10 is a third electrode, 11 is an insulating layer, and 20 is a lower substrate. FIG. 9 is a cross-sectional view taken along the line AA in FIG. 1, in particular for clarifying the positional relationship between the first insulator 4 and the gas layer 9 with respect to the electrodes 6 and 7 disposed on the light-transmitting substrate 8. It is a drawing. FIG. 10 is a plan view of the display device according to the first embodiment. In FIG. 1, only a part of the translucent substrate 8 is shown for convenience. In addition, the electrodes 6 and 7 are displayed so that only the two rows of light emitting cells can be seen from the front side of the drawing so as to understand the relationship with other device constituent members (however, the cut surfaces are the first electrode 6 and the second electrode). 7, the first electrode 6 in the row closest to the drawing is not visible).

As shown in FIG. 2, Ag paste is baked to a thickness of 5 μm to 30 μm on one surface of a lower layer substrate 20 formed of a glass material, a ceramic material, or a mixed material of a glass material and a ceramic material, and the third electrode 10 Are formed into a predetermined shape. Next, as shown in FIG. 3, the second insulator 5 is formed on the lower layer substrate 20 and the third electrode 10. Specifically, a paste prepared by kneading α-terpineol 40 wt% and ethyl cellulose 5 wt% in a powder obtained by mixing 15 wt% of a glass powder with 40 wt% of BaTiO ₃ powder, and after screen printing is used at 400 ° C. to By performing heat treatment at 600 ° C., a layer of the second insulator 5 having a thickness of 10 μm to 1000 μm was formed. Note that an insulating raw sheet and a sheet on which an electrode is printed may be stacked on the lower substrate 20 so that the second insulator covers the periphery of the third electrode 10.

In this embodiment, BaTiO ₃ is used as the second insulator 5, but the same effect can be obtained by using an insulator such as SrTiO ₃ , CaTiO ₃ , MgTiO ₃ , Pb (Zr, Ti) O ₃ , PbTiO _3. can get. The same effect can be obtained by using an insulator such as Al ₂ O ₃ , MgO, ZrO ₂ , but the luminance is weaker than that of an insulator having a large relative dielectric constant. However, this can improve the capacity by reducing the thickness of the insulator. The insulating layer 11 can also be formed by a thin film forming process such as sputtering, CVD, vapor deposition, sol / gel, or the like.

  In addition, when using a sintered compact as the 2nd insulator 5, since this can be combined with the lower layer board | substrate 20, it is not necessary to use this lower layer board | substrate 20. FIG. The thickness of the insulator 5 varies greatly depending on whether a sintered body is used or a thick film process is used. In practice, the required capacitance component can be adjusted in relation to the relative dielectric constant. Regardless of whether or not the second insulator 5 is also used, the third electrode 11 is in contact with the surface of the insulator on the lower substrate side, or the third electrode 11 covers the insulator 5. If it arrange | positions so that it may be shown, there exists an effect of this invention.

Next, the first insulator 4 is formed on the second insulator 5 so as to face each other. Specifically, a paste obtained by adding 50 wt% of α-terpineol to 50 wt% of mixed particles of ceramic (for example, SrTiO ₃ ) and glass (1: 1 by weight) and kneading is screen-printed in a predetermined pattern, 400 The first insulator 4 having a thickness of about 3 μm to 500 μm was formed as shown in FIG. 4 by heat treatment for 2 hours to 5 hours at a temperature of from about 580 ° C. to about 580 ° C. for solidification. Note that the first insulator 4 and the second insulator 5 same material (e.g., BaTiO ₃₎ may be formed in. If the same material is used, a predetermined region is masked, and then the first insulator 4 and the second insulator 5 are formed at a time by sandblasting, which is advantageous in that the manufacturing process can be reduced.

Next, as shown in FIG. 5, the light emitting body 2 including phosphor particles is formed on the second insulator 5 in a layered manner by a screen printing method. A paste prepared by kneading α-terpineol 45 wt% and ethyl cellulose 5 wt% with respect to 50 wt% of the phosphor particles is prepared for each illuminant, and this is screen-printed and then dried several times to repeat the process. As shown in FIG. 5, the light-emitting body 2 having a thickness of 3 μm or more and 500 μm or less was adjusted. In addition, as phosphor particles, ZnS: Ag (blue), ZnSiO ₅ : Ce ³⁺ (blue), ZnS: Cu, Cl (green), Y ₂ O ₂ S: Eu ³⁺ (red), etc. BaMgAl ₁₀ O ₁₇ : Eu ²⁺ (blue), (Sr, Ba, Ca, Mg) ₁₀ (PO ₄ ) ₆ Cl ₂ : Eu ²⁺ (blue), Zn ₂ SiO ₄ : Mn ²⁺ (green), Sr ₄ Al ₁₄ O ₂₅ : Eu ²⁺ (green), LaPO ₄ : Ce ³⁺ , Tb ³⁺ (blue green), CeMgAl ₁₀ O ₁₉ : Tb ³⁺ (green), 3.5 MgO · 0.5 MgF ₂ GeO ₂ : Mn ⁴⁺ ( It is possible to use fluorescent inorganic compounds such as red) and YBO ₃ : Eu ³⁺ (red).

Here, the surface of the phosphor particles may be covered with a layer made of a metal oxide such as MgO. Thereby, there exists an advantage that a creeping discharge can be generated efficiently. For example, a method of forming an MgO layer on the surface of the phosphor particles is performed as follows. First, Mg (OC ₂ H ₅ ) ₂ powder (1 mole ratio), which is a metal alkoxide, is converted from CH ₃ COOH (10 mole ratio), H ₂ O (50 mole ratio) and C ₂ H ₅ OH (50 mole ratio). The resulting solution is mixed well with stirring at room temperature to prepare an almost transparent sol-gel solution. The phosphor particles (2 molar ratio) are added to the sol / gel solution little by little with stirring. After this operation was continued for one day, the mixed solution was centrifuged, and the powder was taken in a ceramic vat and dried at 150 ° C. overnight. Next, the dried powder was calcined in the atmosphere at 400 ° C. to 600 ° C. for 2 hours to 5 hours, thereby forming a uniform layer of MgO on the surface of the phosphor particles.

  The light emitter 2 is manufactured so that light emission of any one of red (R), green (G), and blue (B) can be obtained. In an actual display device or the like, the layered light emitters 2 are sequentially printed in a predetermined pattern (for example, a stripe shape) for each emission color to form regularly arranged light emitters 2. It is also possible to form a luminescent material 2 that emits white light and then separate the colors with a color filter to obtain a desired luminescent color.

  After the phosphor 2 is printed as described above, the phosphor 2 having a thickness of 3 μm or more and 500 μm or less is formed by heat treatment in the atmosphere at 400 ° C. to 580 ° C. for 10 minutes to 60 minutes. did. In the present embodiment, the light emitter 2 is formed after the first insulator 4 is formed, but the light emitter 2 may be formed first.

  Moreover, although the above-mentioned paste was prepared by adding an organic binder or an organic solvent to the phosphor particles, the same effect was obtained by using a paste in which an aqueous colloidal silica solution was added to the phosphor particles. In addition, when the colloidal silica aqueous solution is added, it is not necessary to perform heat treatment in the step of forming the light emitter, so that the phosphor can be prevented from being oxidized.

  Next, the first electrode 6 and the second electrode 7 made of Ag are formed on the translucent substrate 8 by screen printing. Thereafter, the insulating layer 11 is formed so as to cover the first electrode 6 and the second electrode 7. In the present embodiment, the insulating layer 11 is formed as follows. First, a dielectric thick film paste is applied on the translucent substrate 8 on which the first electrode 6 and the second electrode 7 are formed, and heat treatment is performed in the atmosphere to form a dielectric layer. Then, an MgO layer is formed on the upper layer of the dielectric layer by MgO sputtering, and the first electrode 6 or the second electrode 7 is covered to form the insulating layer 11. The insulating layer 11 may be formed by applying a mixture of the dielectric thick film paste (90 wt ratio) and MgO powder (10 wt ratio) and baking at 500 ° C. to 600 ° C. in the atmosphere. The insulating layer 11 has a thickness of 0.1 μm or more and 30 μm or less. The insulating layer 11 serves as a protective film against discharge of the electrode. If the insulating layer 11 is less than 0.1 μm, the risk of the electrodes 6 and 7 being scraped by the discharge and further deterioration increases, and if it exceeds 30 μm, the discharge voltage increases and the luminous efficiency decreases.

  The first electrode 6 and the second electrode 7 are translucent, such as a glass plate, formed in advance at a position where at least a part of the first electrode 6 and the second electrode 7 is physically in contact with the first insulator 4 via the insulating layer 11. When the light emitter 2 is covered with the substrate 8, the display device 1 according to the first embodiment shown in FIGS. 1 and 6 is obtained. At that time, colloidal silica, water glass, or so as to produce a gap composed of the gas layer 9 between the insulating layer 11 covering at least the light emitter 2 and the first electrode 6 or between the insulating layer 11 covering the light emitter 2 and the second electrode 7. The translucent substrate 8 is pasted on the first insulator 4 using a resin or the like.

  The distance in which the gas layer 9 exists between the insulating layer 11 covering the light emitter 2 and the first electrode 6 or the insulating layer 11 covering the light emitter 2 and the second electrode 7 is at least equal to or greater than the mean free path of gas molecules. There is no problem. Accordingly, the thickness of the light-emitting body 2 is actually in the range of 20 μm to 500 μm in view of the manufacturing process, and more preferably in the range of more than 30 μm to 250 μm. Since the discharge start voltage in this display device is affected by the distance between each electrode 6, 7 and the light emitter 2, if the above upper limit is exceeded, it becomes difficult to control the distance in the manufacturing process. The variation of the starting voltage becomes large.

  Further, in the case of adopting a configuration in which the electrode on the translucent substrate 8 is only one of the first electrode 6 or the second electrode 7 instead of the first embodiment described above, as shown in FIG. The display device 1 in the second embodiment is obtained.

  In addition, about the translucent board | substrate 8 which has the transparent electrode which consists of Ag as the 1st electrode 6 and the 2nd electrode 7, it is also possible to use the translucent board | substrate with which ITO wiring was given instead of Ag. Moreover, since ITO has a considerably higher resistance than Ag, it is necessary to pay attention to the increase of the light emission voltage, the generation of heat, the disconnection, and the like. As other electrode materials, gold, copper, titanium, aluminum or the like can be used.

By the way, in each embodiment of the present invention, when the phosphor 2 is formed, a paste formed by adding an organic binder, an organic solvent, or the like as needed based on the phosphor particles as a powder is used. By adjusting the material and heat treatment conditions, it is possible to form the porous light-emitting body 2 as a final form. Specifically, regarding the heat treatment conditions, when a heat-resistant ceramic plate is used as the lower layer substrate 20, the heat treatment can be performed in a relatively wide temperature range of 400 ° C. to 600 ° C. In addition, when the above-mentioned organic binder, organic solvent, or the like is added to form a paste, high-temperature heat treatment is required in the air, and there is a problem that luminance characteristics are easily changed due to oxidation of phosphor particles. Specifically, for example, BaMgAl ₁₀ O ₁₇ : Eu ²⁺ emits blue light by Eu ^{2+ serving as the} emission center. However, when it becomes Eu ³⁺ by oxidation during heat treatment, it emits red light. Therefore, it is advantageous from the viewpoints of luminance characteristics and economy by drying at 120 ° C. to 150 ° C. using a paste to which an aqueous solution of colloidal silica of an inorganic binder is added as the light emitter 2 instead of an organic binder system. . In each embodiment, the luminous body 2 has a porosity of 10% or more. The optimum value is 30% or more and 70% or less. When the porosity is less than 10%, that is, when it can no longer be said to be porous, the light emission phenomenon itself is not greatly affected, but the sustainability of the creeping discharge inside the light emitter 2 is hindered. There is a problem that the light emission efficiency is lower than that in the porous state.

  Next, the light emission mechanism of the display device 1 will be described with reference to FIG. As shown in FIG. 1, an alternating electric field is applied between the first electrode 6 and the second electrode 7 in order to drive the display device 1. The relationship of the magnitude of the capacitance component in each embodiment is as follows: first insulator 4 or second insulator 5> light emitter 2> gas layer 9. Therefore, when an electric field is applied to the display device, the voltage value applied to each layer is substantially proportional to the reciprocal of the capacity, so the first insulator 4 or the second insulator 5 <the light emitter 2 <the gas layer 9 and Become. Therefore, the light emission mechanism of the display device 1 is considered as follows. First, an electric field is applied between the first electrode 6 and the second electrode 7. At that time, when an electric field equal to or higher than the dielectric breakdown voltage is applied to the gas layer 9, dielectric breakdown occurs and discharge occurs. Here, the discharge is generated at the contact point between the cathode side electrode, the gas layer 9 and the first insulator 4, and a large amount of electrons are emitted from the cathode side electrode. Next, the emitted electrons collide with oxygen atoms, nitrogen atoms and the like in the atmosphere in the gas layer 9 to generate ultraviolet rays having a wavelength of 300 nm to 430 nm. Further, since the capacitance component is proportional to the dielectric constant, the proportion of electrons moving along the surfaces of the first insulator 4 and the second insulator 5 having low impedance increases. As a result, the proportion of electrons moving on the surface or inside of the light emitter 2 is increased, and the emitted electrons collide with the light emitter 2. The electrons are accelerated by the electric field to generate ultraviolet rays, and at the same time, some of the electrons collide with the phosphor particles to excite the emission center. In the case where the light-emitting body 2 is porous, creeping discharge is repeated using the voids, and further accelerated to generate ultraviolet rays. At the same time, a part collides with the phosphor particles to excite the light emission center. Thereafter, the electrons are absorbed by the electrode on the anode side. As described above, it is considered that ultraviolet excitation and electronic excitation occur simultaneously and light is emitted. In addition, by applying an alternating electric field to the third electrode 10 and controlling the electric field, it is possible to control the discharge start voltage value, the number of electrons colliding with the light emitter 2, and the like.

  As another embodiment, a display device 1 in which only the first electrode 6 and the third electrode 10 are arranged will be described with reference to FIG. A display device was formed under the same conditions as in the previous embodiment except for the arrangement of the electrodes. When an AC electric field is applied between the first electrode 6 and the third electrode 10 in order to drive the display device 1, an electric field higher than the dielectric breakdown voltage is applied to the gas layer 9 to cause dielectric breakdown and discharge. To do. Here, discharge starts at the contact of the insulator layer 11 covering the first electrode 6, the gas layer 9 and the first insulator 4, and electrons are emitted from the insulator layer 11 covering the first electrode 6. Next, the emitted electrons collide with oxygen atoms, nitrogen atoms and the like in the atmosphere in the gas layer 9 to generate ultraviolet rays having a wavelength of 300 nm to 430 nm. In addition, since the first electrode 6 and the third electrode 10 are disposed via the light emitter 2, the proportion of electrons moving on or inside the light emitter 2 is increased, and the emitted electrons are also transmitted to the light emitter 2. collide. The electrons are accelerated by the electric field to generate ultraviolet rays, and at the same time, some of the electrons collide with the phosphor particles to excite the emission center. In the case where the illuminant is porous, the rate of exciting the luminescent center is increased by repeating creeping discharge using the voids. Thereafter, the electrons are absorbed by the third electrode 10. As described above, it is considered that ultraviolet excitation and electronic excitation occur simultaneously and light is emitted. Note that by changing the waveform of the AC electric field to be applied from a sine wave or a sawtooth wave to a rectangular wave, and increasing the frequency from several tens of Hz to several hundreds of kHz, the emission of electrons becomes extremely intense and the luminance is improved.

  The light emission mechanism of the display device 1 is as described above. In order to function as an actual display, not only light emission but also quenching must be quickly and well controlled. A specific driving method for realizing this will be described later.

In each of the embodiments, the light emission state was confirmed by changing the ratio of the area occupied by the light emitter 2 to the area of the region surrounded by the first insulator 4, the second insulator 5, and the translucent substrate 8. . The translucent substrate 8 indicates the outermost substrate, and does not mean, for example, a translucent film or layer provided so as to cover the electrodes 6 and 7. . Specifically, the area ratio with respect to a predetermined cross section of the light emitter is 3%, 5%, 10%, 20%, 35% in one display device by screen printing using the paste containing the phosphor particles described above. What solidified the light-emitting body 2 so that it might become 40%, 55%, 65%, 75%, 85%, and 95% was prepared, and the brightness | luminance by the following conditions was investigated about each. The first insulator 4 was formed so as to have different heights in the row direction and the column direction. At that time, the lower height of the first insulator 4 was set to 100 μm. In the phosphor 2, in the case of 3%, 5% and 10% (as shown in FIG. 8A), for example, BaMgAl ₁₀ O ₁₇ : Eu ²⁺ (blue) phosphor particles having a large excitation spectrum at a wavelength of 200 nm to 400 nm And the gas layer 9 is the atmosphere. The atmospheric discharge spectrum is in the ultraviolet region with a wavelength of 300 nm to 430 nm, and the aforementioned phosphor particles emitted blue light by ultraviolet excitation and electronic excitation. Here, it is considered that light emission is mainly controlled by ultraviolet excitation. Note that when the gas layer 9 was replaced with argon gas, the luminance was extremely reduced. This is presumably because the discharge spectrum of argon gas emits light at a wavelength of 690 nm to 850 nm, so that the phosphor particles are not excited by ultraviolet rays, and most of the phosphor particles emit light by electronic excitation, resulting in a decrease in luminance. Further, if the area occupied by the light emitter 2 is less than 3%, it is not preferable because it is affected by the discharge on the surface of the second insulator 5 and the chromaticity is changed. On the other hand, in the case of 20%, 35%, 40%, 55%, 65% and 75%, the phosphor particles are dominated by both ultraviolet excitation and electron excitation, and the luminance is improved, so that the brightness becomes brighter.

  Further, when the light-emitting body 2 is porous and the gas layer 9 is the atmosphere, it is in the range of more than 50% and less than 100% (as shown in FIG. 8B), 55%, 65%, 75 The luminance was further improved at%, 85% and 95%. This is probably because the light emitter 2 has a certain thickness, and therefore, creeping discharge is more likely to occur inside the light emitter 2 and the rate of collision between the electrons and the light emitter 2 is increased. However, in the case of 85% and 95%, the luminance was slightly reduced compared to the case of 55%, 65%, and 75%. When the gas layer 9 is replaced with argon gas as described above, the luminance is slightly reduced in the entire range. However, since light is emitted by electronic excitation, it exceeds 50% as compared with 3%, 5%, and 10%. In the range of less than 100%, 55%, 65%, 75%, 85% and 95%, it was possible to obtain twice as much brightness. However, in the case of 85% and 95%, even when the gas layer 9 was replaced with argon gas, the change from the atmosphere was small. This is probably because the discharge space is too small, and the light emission is mainly dominated by electronic excitation.

  As described above, the display device according to the present embodiment has an advantage that the area occupied by the light emitter 2 can be increased because both ultraviolet excitation and electronic excitation occur. Furthermore, by disposing the third electrode 10 and controlling the electric field, the dielectric breakdown of the gas due to the electric field application between the first electrode 6 and the second electrode 7 is facilitated. Since the capacitance component is proportional to the dielectric constant, the proportion of electrons moving along the surfaces of the first and second insulators having low impedance increases. As a result, the proportion of electrons moving on or inside the light emitter 2 is also increased, and it is estimated that the emitted electrons collide with the light emitter 2. Furthermore, by controlling the electric field of the third electrode 10, it is possible to control in a direction in which electrons are made to collide with the light emitter 2 in a large amount and deeply, or conversely, the electrons are swept out so as not to collide with the light emitter 2.

  In each of the embodiments, the driving is performed in the atmosphere, but light is emitted in the same manner even when the oxygen gas alone, the nitrogen gas alone, the mixing ratio of oxygen and nitrogen, or the decompressed gas is used. It was confirmed. In addition, it was confirmed that light was emitted in the same manner when a mixed gas in which xenon gas having a volume ratio of 2% or less was added to the aforementioned various gases was used.

  The specific configuration and light emission mechanism regarding the display device of each embodiment have been described above. Next, a driving apparatus and a driving method for realizing control of light emission and extinction for each display device in each form will be disclosed.

(Drive of counter discharge between 3 electrodes)
First, an example of a driving method related to the display device according to the first embodiment in which three electrodes are provided for one pixel will be described. FIG. 11 is an operation drive timing diagram showing a display device drive method according to the first embodiment. The present embodiment is intended to realize control of light emission and extinction of the display device by applying a voltage between partially opposed electrodes mainly through a light emitter.

  This driving method is for performing gradation display of 256 gradations, and one field period is composed of eight subfields. Hereinafter, a display device driving method according to the first embodiment will be described with reference to FIGS.

  As shown in FIG. 11, each of the first to eighth subfields includes a writing period that is a first period, a sustain period that is a second period, and an erasing period that is a third period. First, the operation in the first subfield will be described. In addition, although it applies about all the following examples, the name given to each period is not limited to this, and other names may be used as long as the same effect is exhibited. Needless to say, it is within the scope of the technical idea of the present invention.

As shown in FIG. 11, in the writing operation in the first period, all of the scan electrodes (hereinafter referred to as scan electrodes in this embodiment) SCN _{1 to} SCN _N as the third electrode are set to 0 (V). Of the data electrodes D _{1 to} D _M (hereinafter referred to as data electrodes in the present embodiment) that are held and are the second electrodes, predetermined data electrodes D _j (j is 1) corresponding to the pixel to be displayed in the first row. A positive write pulse voltage + Vw (V) is applied to (represents an integer of .about.M), and a scan pulse voltage -Vs (V) is applied to scan electrode SCN1 in the _first row. At this time, the voltage between the predetermined data electrode Dj and the scanning electrode SCN ₁ surface of the insulating layer 11 at the intersections between the scanning electrodes SCN ₁ on the second insulator 5 of the surface, the write pulse voltage + Vw (V Therefore, a write discharge occurs between the predetermined data electrode D _j and the scan electrode SCN ₁ at the intersection, and a positive wall voltage is applied to the surface of the second insulator 5 on the scan electrode SCN _{1 at the} intersection. There is accumulated negative wall voltage on the surface of the insulating layer 11 on the data electrodes D _j is understood accumulate.

From the second row, the same operation is performed continuously. Finally, among the data electrodes D _{1 to} D _M , a positive write pulse voltage is applied to a predetermined data electrode D _j corresponding to a pixel to be displayed in the Nth row. + Vw (V) is applied to scan electrode SCN _N in the Nth row, and scan pulse voltage −Vs (V) is applied thereto. At this time, an address discharge occurs between the predetermined data electrode D _j and the scan electrode SCN _N at the intersection between the predetermined data electrode D _j and the scan electrode SCN _N, and the scan electrode SCN _N on the intersection is scanned. positive wall voltage is accumulated in the second insulator 5, the negative wall voltage on the surface of the insulator 11 on the predetermined data electrode D _j is understood accumulate.

  Thus, the writing operation in the writing period that is the first period is completed.

In the subsequent sustain period, which is the second period, first, all the scan electrodes SCN _{1 to} SCN _N and the sustain electrodes SUS _{1 to} SUS _N that are the first electrodes (hereinafter referred to as sustain electrodes in this embodiment) are set to 0 (hereinafter referred to as sustain electrodes). After returning to V), when a positive sustain pulse voltage + Vm (V) is applied to all the scan electrodes SCN _{1 to} SCN _N , the scan electrode SCN _i (i is an integer of 1 to N) in the pixel in which the write discharge has occurred. The voltage between the surface of the second insulator 5 on the upper surface and the surface of the insulating layer 11 on the sustain electrode SUS _i is the sustain pulse voltage + Vm (V), and the scan electrode SCN _i accumulated in the writing period. The positive wall voltage accumulated on the surface of the second insulator 5 is added and exceeds the discharge start voltage. For this reason, in the pixel in which the write discharge has occurred, a sustain discharge mainly including creeping discharge occurs between the scan electrode SCN _i and the sustain electrode SUS _i, and the surface of the second insulator 5 on the scan electrode SCN _i in this pixel. In addition, it is understood that a negative wall voltage is accumulated in and / or on the surface of the light emitter 2, and a positive wall voltage is accumulated on the surface of the insulating layer 11 on the sustain electrode SUS _i . Thereafter, the sustain pulse voltage returns to 0 (V).

Subsequently, when a positive sustain pulse voltage + Vm (V) is applied to all the sustain electrodes SUS _{1 to} SUS _N , the surface of the insulating layer 11 on the sustain electrode SUS _i and the scan electrode SCN _i in the pixel where the write discharge has occurred. The voltage between the second insulator 5 and the surface of the second insulator 5 is the sustain pulse voltage + Vm (V), the negative wall voltage of the surface of the second insulator 5 on the scan electrode SCN _i accumulated by the last sustain discharge and The positive wall voltage of the surface of the insulating layer 11 on the sustain electrode SUS _i is added. For this reason, in the pixel in which the write discharge has occurred, a sustain discharge mainly including a creeping discharge occurs between the sustain electrode SUS _i and the scan electrode SCN _i , whereby the surface of the insulating layer 11 on the sustain electrode SUS _i in the pixel. It is understood that a negative wall voltage is accumulated on the surface of the second insulator 5 and the inside of the light emitter 2 and / or on the surface of the scan electrode SCN _i . Thereafter, the sustain pulse voltage returns to 0 (V).

Thereafter, in the same manner, by applying a positive sustain pulse voltage + Vm (V) alternately to all scan electrodes SCN _{1 to} SCN _N and all sustain electrodes SUS _{1 to} SUS _N , sustain discharge mainly including creeping discharge is performed. When the positive sustain pulse voltage + Vm (V) is applied to all the scan electrodes SCN _{1 to} SCN _N at the end of the sustain period that is the second period, the scan electrode in the pixel in which the write discharge has occurred The voltage between the surface of the second insulator 5 on the SCN _i and the surface of the insulating layer 11 on the sustain electrode SUS _i is the sustain pulse voltage + Vm (V) and the scan electrode SCN accumulated by the last sustain discharge. negative wall voltage of the positive wall voltage and the sustain electrode SUS _i on the insulating layer 11 the surface of the second insulator 5 on the surface of the _i becomes to have been added. For this reason, in the pixel in which the write discharge has occurred, a sustain discharge mainly including a creeping discharge occurs between the scan electrode SCN _i and the sustain electrode SUS _i , whereby the second insulator on the scan electrode SCN _i in that pixel. It is understood that a negative wall voltage is accumulated on the surface 5 and a positive wall voltage is accumulated on the surface of the insulating layer 11 on the sustain electrode SUS _i . Thereafter, the sustain pulse voltage returns to 0 (V). Thus, the maintenance operation for the maintenance period is completed. Visible light emission from the light emitter 2 is used for display by the sustain discharge mainly including the creeping discharge.

In the subsequent erasing period, a voltage of + Vq (V) is applied to all the sustain electrodes SUS _{i to} SUS _N , and then a ramp voltage whose voltage value gradually decreases from + Vq (V) to −Vq ′ (V) is applied. When applied, the detailed mechanism is not known in the pixel that caused the above-mentioned creeping discharge mainly, but the sustaining discharge is stopped immediately, specifically, within 100 μsec or less, thereby realizing rapid quenching. It was confirmed that In other examples, when the aforementioned lamp voltage was applied to the scan electrode SCN _i side, it was not possible to quench the light. Although the elucidation of the quenching mechanism is still insufficient as compared with the light emission mechanism of the display device according to the present embodiment, the display device is actually obtained by obtaining specific means for quick quenching. It was confirmed that it could function as

  Thus, the erase operation in the erase period that is the third period is completed.

One screen in the first subfield is displayed by all the operations described above. Hereinafter, the same operation is performed from the second subfield to the eighth subfield. The luminance of the pixels displayed in these subfields is determined by the number of times of applying the sustain pulse voltage + Vm (V). Thus, for example, by setting the pulse voltage application times maintained in each subfield appropriate intensity by sustain discharges in one field period 2 ^0, 2 1, ^{2 2,} eight subfields are ... 2 ⁷ By configuring, gradation display of 2 ⁸ = 256 gradations becomes possible.

  A display device including a driving device that is driven as described above can quickly and efficiently emit and extinguish light with good control, regardless of the special configuration of the device. In addition, this drive device can apply a well-known drive device except the operation drive timing concerning the above-mentioned present Example.

  Next, an example of another driving method related to the display device in the first embodiment will be described. FIG. 12 is an operation driving timing chart showing another driving method of the display device according to the first embodiment. In this embodiment, a predetermined voltage is mainly applied between two electrodes existing on one surface side of the light emitter, in other words, between two electrodes provided on one side of the substrate facing each other through the light emitter. Is intended to realize control of light emission and extinction of the display device.

  This driving method is also for performing gradation display of 256 gradations, and one field period is composed of eight subfields. Hereinafter, another driving method of the display device according to the first embodiment will be described with reference to FIGS.

  As shown in FIG. 12, each of the first to eighth subfields includes a writing period that is a first period, a sustaining period that is a second period, and an erasing period that is a third period. First, the operation in the first subfield will be described.

As shown in FIG. 12, in the write operation in the first period, all of the scan electrodes (hereinafter referred to as scan electrodes in this embodiment) SCN _{1 to} SCN _N as the second electrode are held at 0 (V). Among the data electrodes D _{1 to} D _M (hereinafter referred to as data electrodes in this embodiment) which are the third electrodes, predetermined data electrodes D _j (j is _{1 to M} corresponding to the pixel to be displayed in the first row). A positive write pulse voltage + Vw (V) is applied to the scan electrode SCN1 in the _first row, and a scan pulse voltage −Vs (V) is applied to the scan electrode SCN1 in the _first row. At this time, the voltage between the predetermined data electrode Dj and the scanning electrode SCN ₁ and the second insulator 5 of the surface and the scanning electrodes SCN ₁ on the surface of the insulating layer 11 at the intersection of the write pulse voltage + Vw (V Therefore, a write discharge occurs between the predetermined data electrode D _j and the scan electrode SCN ₁ at this intersection, and a positive wall voltage is accumulated on the surface of the insulating layer 11 on the scan electrode SCN _{1 at} this intersection. is, negative wall voltage on the surface of the second insulator layer 5 on the data electrode D _j is understood accumulate.

From the second row, the same operation is performed continuously. Finally, among the data electrodes D _{1 to} D _M , a positive write pulse voltage is applied to a predetermined data electrode D _j corresponding to a pixel to be displayed in the Nth row. + Vw (V) is applied to scan electrode SCN _N in the Nth row, and scan pulse voltage −Vs (V) is applied thereto. At this time, an address discharge occurs between the predetermined data electrode D _j and the scan electrode SCN _N at the intersection between the predetermined data electrode D _j and the scan electrode SCN _N, and the scan electrode SCN _N on the intersection is scanned. positive wall voltage is accumulated in the insulating wound 11, a negative wall voltage is understood that accumulate on the surface of the second insulator layer 5 on the predetermined data electrode D _j.

  Thus, the writing operation in the writing period that is the first period is completed.

In the subsequent sustain period, which is the second period, first, all the scan electrodes SCN _{1 to} SCN _N and the sustain electrodes SUS _{1 to} SUS _N that are the first electrodes (hereinafter referred to as sustain electrodes in this embodiment) are set to 0 (hereinafter referred to as sustain electrodes). After returning to V), when a positive sustain pulse voltage + Vm (V) is applied to all the scan electrodes SCN _{1 to} SCN _N , the scan electrode SCN _i (i is an integer of 1 to N) in the pixel in which the write discharge has occurred. The voltage between the surface of the upper insulating layer 11 and the surface of the insulating layer 11 on the sustain electrode SUS _i is set to the sustain pulse voltage + Vm (V) on the scan electrode SCN _i accumulated in the writing period. The positive wall voltage accumulated on the surface of the insulating layer 11 is added and exceeds the discharge start voltage. For this reason, in the pixel in which the writing discharge has occurred, a sustain discharge mainly including creeping discharge occurs between the scan electrode SCN _i and the sustain electrode SUS _i, and the surface of the insulating layer 11 on the scan electrode SCN _i and light emission in this pixel. It is understood that a negative wall voltage is accumulated in the body 2 and / or the surface, and a positive wall voltage is accumulated on the surface of the insulating layer 11 on the sustain electrode SUS _i . Thereafter, the sustain pulse voltage returns to 0 (V).

Subsequently, when a positive sustain pulse voltage + Vm (V) is applied to all the sustain electrodes SUS _{1 to} SUS _N , the surface of the insulating layer 11 on the sustain electrode SUS _i and the scan electrode SCN _i in the pixel where the write discharge has occurred. The voltage between the surface of the insulating layer 11 and the surface of the insulating layer 11 is the sustain pulse voltage + Vm (V), the negative wall voltage on the surface of the insulating layer 11 on the scan electrode SCN _i accumulated by the last sustain discharge and the sustain electrode SUS _i. The positive wall voltage on the surface of the upper insulating layer 11 is added. For this reason, in the pixel in which the write discharge has occurred, a sustain discharge mainly including a creeping discharge occurs between the sustain electrode SUS _i and the scan electrode SCN _i , whereby the surface of the insulating layer 11 on the sustain electrode SUS _i in the pixel. It can be understood that a negative wall voltage is accumulated on the surface of the insulating layer 11 on the scan electrode SCN _i and inside and / or on the surface of the light emitter 2. Thereafter, the sustain pulse voltage returns to 0 (V).

Thereafter, in the same manner, by applying a positive sustain pulse voltage + Vm (V) alternately to all scan electrodes SCN _{1 to} SCN _N and all sustain electrodes SUS _{1 to} SUS _N , sustain discharge mainly including creeping discharge is performed. When the positive sustain pulse voltage + Vm (V) is applied to all the scan electrodes SCN _{1 to} SCN _N at the end of the sustain period that is the second period, the scan electrode in the pixel in which the write discharge has occurred The voltage between the surface of the insulating layer 11 on the SCN _i and the surface of the insulating layer 11 on the sustain electrode SUS _i is the sustain pulse voltage + Vm (V) on the scan electrode SCN _i accumulated by the last sustain discharge. The positive wall voltage of the insulating layer 11 and the negative wall voltage of the surface of the insulating layer 11 on the sustain electrode SUS _i are added. For this reason, in the pixel in which the writing discharge has occurred, a sustain discharge mainly including a creeping discharge occurs between the scan electrode SCN _i and the sustain electrode SUS _i , whereby the surface of the insulating layer 11 on the scan electrode SCN _i in the pixel. It is understood that a negative wall voltage is accumulated in the storage electrode SUS _i and a positive wall voltage is accumulated on the surface of the insulating layer 11 on the sustain electrode SUS _i . Thereafter, the sustain pulse voltage returns to 0 (V). Thus, the maintenance operation for the maintenance period is completed. Visible light emission from the light emitter 2 is used for display by the sustain discharge mainly including the creeping discharge.

In the subsequent erasing period, a voltage of + Vq (V) is applied to all the sustain electrodes SUS _{i to} SUS _N , and then a ramp voltage whose voltage value gradually decreases from + Vq (V) to −Vq ′ (V) is applied. When applied, the detailed mechanism is not known in the pixel that caused the above-mentioned creeping discharge mainly, but the sustaining discharge is stopped immediately, specifically, within 100 μsec or less, thereby realizing rapid quenching. It was confirmed that Although the elucidation of the quenching mechanism is still insufficient as compared to the light emission mechanism of the display device according to the present embodiment, by actually obtaining a specific means for quick quenching, it is actually used as a display device. It was confirmed that it could function.

  Thus, the erase operation in the erase period that is the third period is completed.

One screen in the first subfield is displayed by all the operations described above. Hereinafter, the same operation is performed from the second subfield to the eighth subfield. The luminance of the pixels displayed in these subfields is determined by the number of times of applying the sustain pulse voltage + Vm (V). Thus, for example, by setting the pulse voltage application times maintained in each subfield appropriate intensity by sustain discharges in one field period 2 ^0, 2 1, ^{2 2,} eight subfields are ... 2 ⁷ By configuring, gradation display of 2 ⁸ = 256 gradations becomes possible.

  A display device including a driving device that is driven as described above can quickly and efficiently emit and extinguish light with good control, regardless of the special configuration of the device. In addition, this drive device can apply a well-known drive device except the operation drive timing concerning the above-mentioned present Example.

  Next, an example of a driving method related to the display device according to the second embodiment in which two electrodes facing each other through a light emitter are provided for one pixel will be described. FIG. 13 is an operation drive timing diagram showing a display device drive method according to the second embodiment. In this embodiment, a voltage is applied between partially opposed electrodes via a light emitter to achieve control of light emission and extinction of the display device.

  This driving method is also for performing gradation display of 256 gradations, and one field period is composed of eight subfields. Hereinafter, a display device driving method according to the second embodiment will be described with reference to FIGS.

  As shown in FIG. 13, each of the first to eighth subfields includes a writing period that is a first period, a sustaining period that is a second period, and an erasing period that is a third period. First, the operation in the first subfield will be described. In the present embodiment, the first electrode is a data electrode and a sustain electrode.

As shown in FIG. 13, in the writing operation in the first period, all the scanning electrodes that are the third electrodes (hereinafter referred to as scanning electrodes in this embodiment) are held at 0 (V), and the first electrodes The positive write pulse voltage + Vw (V) is applied to the predetermined data electrode corresponding to the pixel to be displayed in the first row among the data electrodes (hereinafter referred to as data electrodes in this embodiment). A scan pulse voltage −Vs (V) is applied to SCN ₁ . At this time, the voltage between the predetermined data electrode and the scanning electrode SCN ₁ surface of the insulating layer 11 at the intersections between the scanning electrodes SCN ₁ on the second insulator layer 5 of the surface, the write pulse voltage + Vw (V Therefore, a write discharge occurs between the predetermined data electrode and the scan electrode SCN ₁ at the intersection, and a positive wall voltage is applied to the surface of the second insulator layer 5 on the scan electrode SCN _{1 at the} intersection. It is understood that a negative wall voltage is accumulated on the surface of the insulating layer 11 on the data electrode.

After the second row, the same operation is performed continuously. Finally, a positive write pulse voltage + Vw (V) is applied to a predetermined data electrode corresponding to a pixel to be displayed in the Nth row among the data electrodes. Scan pulse voltage −Vs (V) is applied to scan electrode SCN _N in the row. At this time, an address discharge occurs between the predetermined data electrode and the scan electrode SCN _N at the intersection between the predetermined data electrode and the scan electrode SCN _N, and the second insulator on the scan electrode SCN _{N at the} intersection 5, a positive wall voltage is accumulated, and a negative wall voltage is accumulated on the surface of the insulating layer 11 on a predetermined data electrode.

  Thus, the writing operation in the writing period that is the first period is completed.

In the subsequent sustain period, which is the second period, first, all the scan electrodes SCN _{1 to} SCN _N and the sustain electrode shared by the first electrode (hereinafter referred to as a sustain electrode in this embodiment) are once set to 0 (V). After returning, when a positive sustain pulse voltage + Vm (V) is applied to all the scan electrodes SCN _{1 to} SCN _N , the scan electrode SCN _i (i is an integer of 1 to N) in the pixel in which the write discharge has occurred. The voltage between the surface of the second insulator layer 5 and the surface of the insulating layer 11 on the sustain electrode is the sustain pulse voltage + Vm (V), and the second insulation on the scan electrode SCN _i accumulated in the writing period. The positive wall voltage accumulated on the surface of the body layer 5 is added and exceeds the discharge start voltage. Therefore, in the pixel in which the write discharge has occurred, a sustain discharge mainly including a creeping discharge occurs between the scan electrode SCN _i and the sustain electrode, and the surface of the second insulator layer 5 on the scan electrode SCN _i in this pixel and It is understood that a negative wall voltage is accumulated in and / or on the surface of the light emitter 2, and a positive wall voltage is accumulated on the surface of the insulating layer 11 on the sustain electrode. Thereafter, the sustain pulse voltage returns to 0 (V).

Subsequently, when a positive sustain pulse voltage + Vm (V) is applied to all the sustain electrodes, the surface of the insulating layer 11 on the sustain electrode and the second insulator layer 5 on the scan electrode SCN _i in the pixel where the write discharge has occurred. The voltage between the surface of the second insulator layer 5 on the scan electrode SCN _i accumulated by the last sustain discharge and the insulation on the sustain electrode is the sustain pulse voltage + Vm (V). The positive wall voltage on the surface of the layer 11 is added. For this reason, in the pixel in which the writing discharge has occurred, a sustain discharge mainly including a creeping discharge occurs between the sustain electrode and the scan electrode SCN _i , so that a negative wall is formed on the surface of the insulating layer 11 on the sustain electrode in the pixel. It is understood that a voltage is accumulated and a positive wall voltage is accumulated on the surface of the second insulator layer 5 on the scan electrode SCN _i and in and / or on the surface of the light emitter 2. Thereafter, the sustain pulse voltage returns to 0 (V).

Thereafter, similarly, by applying positive sustain pulse voltage + Vm (V) alternately to all scan electrodes SCN _{1 to} SCN _N and all sustain electrodes, sustain discharge mainly including creeping discharge is continuously performed. When the positive sustain pulse voltage + Vm (V) is applied to all the scan electrodes SCN _{1 to} SCN _N at the end of the sustain period, which is the second period, the _first electrode on the scan electrode SCN _i in the pixel in which the write discharge has occurred. The voltage between the surface of the two-insulator layer 5 and the surface of the insulating layer 11 on the sustain electrode is equal to the sustain pulse voltage + Vm (V), the second insulation on the scan electrode SCN _i accumulated by the last sustain discharge. The positive wall voltage of the body layer 5 and the negative wall voltage of the surface of the insulating layer 11 on the sustain electrode are added. For this reason, in the pixel in which the writing discharge has occurred, a sustain discharge mainly including a creeping discharge occurs between the scan electrode SCN _i and the sustain electrode, whereby the second insulator layer 5 on the scan electrode SCN _i in the pixel. It is understood that a negative wall voltage is accumulated on the surface and a positive wall voltage is accumulated on the surface of the insulating layer 11 on the sustain electrode. Thereafter, the sustain pulse voltage returns to 0 (V). Thus, the maintenance operation for the maintenance period is completed. Visible light emission from the light emitter 2 is used for display by the sustain discharge mainly including the creeping discharge.

  In the subsequent erasing period, when a voltage of + Vq (V) is applied to all the sustain electrodes, and then a ramp voltage whose voltage value gradually decreases from + Vq (V) to −Vq ′ (V) is applied, Although the detailed mechanism is not known in the pixel that has caused the sustain discharge, mainly creeping discharge, it has been confirmed that the sustain discharge stops immediately, specifically, within 100 μsec or less, and quick extinction is realized. It was done. Although the elucidation of the quenching mechanism is still insufficient as compared to the light emission mechanism of the display device according to the present embodiment, by actually obtaining a specific means for quick quenching, it is actually used as a display device. It was confirmed that it could function.

  Thus, the erase operation in the erase period that is the third period is completed.

One screen in the first subfield is displayed by all the operations described above. Hereinafter, the same operation is performed from the second subfield to the eighth subfield. The luminance of the pixels displayed in these subfields is determined by the number of times of applying the sustain pulse voltage + Vm (V). Thus, for example, by setting the pulse voltage application times maintained in each subfield appropriate intensity by sustain discharges in one field period 2 ^0, 2 1, ^{2 2,} eight subfields are ... 2 ⁷ By configuring, gradation display of 2 ⁸ = 256 gradations becomes possible.

  A display device including a driving device that is driven as described above can quickly and efficiently emit and extinguish light with good control, regardless of the special configuration of the device. In addition, this drive device can apply a well-known drive device except the operation drive timing concerning the above-mentioned present Example.

  By the way, in each of the above-described embodiments, when applying pulse voltages having opposite polarities to each other in the writing period, which is the first period, the start and stop of application are matched on the time axis. There is no. As an example, FIG. 14A and FIG. 14B are operation drive timing diagrams illustrating other drive methods for the first period in each embodiment. 14A and 14B, for convenience of explanation, only the first period is extracted and the operation drive timing is shown. As shown in FIG. 14A, the time applied to one electrode may be lengthened, and as shown in FIG. 14B, the application start time and stop time may be shifted. In any case, it is possible to perform a write operation as long as it is set to be simultaneously applied at least temporarily. Here, the term “temporary” does not particularly limit the time, but it is preferably 0.1 μsec or more in order to surely execute the write operation.

  According to the display device of each embodiment, since the light emitter is formed by a thick film process or the like, there is no strict requirement for the layer thickness when manufacturing the display device as in the past, and the vacuum system and the carrier multiplication are performed. Since no layer is required, the structure is simple, and manufacturing and processing are easy. Furthermore, in the illuminant having a porous structure, not only the surface emits light as in a normal phosphor, but the irradiated electrons reach the inside of the illuminant having a porous structure, so that the entire illuminant is It is characterized by uniform and uniform light emission. In addition, the luminous efficiency is very good as compared with the phosphor emission by ultraviolet rays performed in plasma displays. Further, it is possible to provide a display device that consumes relatively little power when used in a large display and can achieve high definition relatively easily due to its structure. In addition, it is possible to easily avoid light emission crosstalk by installing a first insulator functioning as a partition as a discharge separation means so as to surround four sides of the light emitter. Furthermore, the display device of the present invention realizes light emission and extinction quickly with good control by providing an appropriate driving device in spite of such a special configuration. According to the display device driving method of the present invention, light emission and extinction can be realized quickly with good control regardless of the special configuration of the device.

  Since the display device of the present invention forms a light emitter by a thick film process or the like, there is no strict requirement for the layer thickness when manufacturing a display device as in the prior art, and no vacuum system or carrier multiplication layer is required. Since it has a simple structure, is easy to manufacture and process, has excellent luminous efficiency as compared with PDP, and can realize control of light emission and extinction, it is extremely useful as a display device. In addition, the display device driving method of the present invention is extremely useful as a display device because it realizes light emission and quenching quickly and with good control, not only for light emission control but also for a special configuration of the device. .

The perspective view of the display device in this 1st Embodiment Explanatory drawing of the manufacturing process of the display device in the first embodiment Explanatory drawing of the manufacturing process of the display device in the first embodiment Explanatory drawing of the manufacturing process of the display device in the first embodiment Explanatory drawing of the manufacturing process of the display device in the first embodiment Sectional drawing of the display device in this 1st Embodiment Sectional drawing of the display device in this 2nd Embodiment Sectional drawing of the BB direction in FIG. Sectional drawing of the BB direction in FIG. Sectional view of the AA direction in FIG. The top view of the display device in this 1st Embodiment Operation drive timing diagram showing a display device drive method in the first embodiment Operation driving timing chart showing another driving method of the display device according to the first embodiment. Operation drive timing diagram showing a display device drive method in the second embodiment Operation driving timing chart showing another driving method in the first period in each embodiment. Operation driving timing chart showing another driving method in the first period in each embodiment. Sectional drawing of the light emitting element in nonpatent literature 2 of a prior art example Sectional drawing of the light emitting element in patent document 3 of a prior art example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display device 2 Luminescent substance containing fluorescent substance particle 4 1st insulator 5 2nd insulator 6 1st electrode 7 2nd electrode 8 Translucent substrate 9 Gas layer 10 3rd electrode 11 Insulating layer 20 Lower layer substrate 101 PZT ceramic 102 Planar electrode 103 Grid electrode 104 Platinum electrode 105 Grid electrode 106 Vacuum vessel 107 Exhaust port 111 Ferroelectric thin film 112 Lower electrode 113 Upper electrode 114 Light emitting layer 115 Substrate 116 Transparent electrode 117 Opening

Claims (10)

A first insulator provided at an opposite position;
A phosphor including phosphor particles interposed between the first insulators;
A second insulator serving as a base for the first insulator and the light emitter;
At least one electrode at least partially facing or disposed through the insulating layer to the first insulator;
Another electrode provided in contact with the second insulator and having the second insulator interposed between the electrode and the electrode;
A translucent substrate opposed to the second insulator through at least the first insulator in part and at least the light emitter in the other part;
A first insulation formed when the first insulator extends in contact with the translucent substrate in a cross section including the first insulator, the second insulator, the light emitter, and the translucent substrate. A display device in which the relationship between the area of the region surrounded by the body, the second insulator, and the translucent substrate and the area occupied by the light emitter is in the range of 0.2 to less than 1 for the former 1 Whereas
Display by a series of sequences consisting of a first period, a second period and a third period;
In the first period,
A second insulator is interposed between one electrode that is at least partially opposed to or arranged with respect to the first insulator via an insulating layer, and is in contact with the second insulator and between the one electrode. Between the other electrodes provided, pulse voltages having opposite polarities are applied simultaneously at least temporarily,
In the second period,
A second insulator is interposed between one electrode that is at least partially opposed to or arranged with respect to the first insulator via an insulating layer, and is in contact with the second insulator and between the one electrode. AC pulse voltage is applied between the other electrodes provided,
In the third period,
A second insulator is interposed between one electrode that is at least partially opposed to or arranged with respect to the first insulator via an insulating layer, and is in contact with the second insulator and between the one electrode. A method for driving a display device, wherein a voltage whose voltage value decreases with the passage of time is applied to another electrode provided. A first insulator provided at an opposite position;
A phosphor including phosphor particles interposed between the first insulators;
A second insulator serving as a base for the first insulator and the light emitter;
A first electrode and a second electrode at least partly facing or arranged with respect to the first insulator via an insulating layer;
A third electrode provided in contact with the second insulator and interposing the second insulator between the first electrode or the second electrode;
A translucent substrate opposed to the second insulator through at least the first insulator in part and at least the light emitter in the other part;
A first insulation formed when the first insulator extends in contact with the translucent substrate in a cross section including the first insulator, the second insulator, the light emitter, and the translucent substrate. A display device in which the relationship between the area of the region surrounded by the body, the second insulator, and the translucent substrate and the area occupied by the light emitter is in the range of 0.2 to less than 1 for the former 1 Whereas
Display by a series of sequences consisting of a first period, a second period and a third period;
In the first period,
A pulse voltage having opposite polarities is applied simultaneously at least temporarily between the first electrode and the third electrode, which are at least partially opposed to or arranged with respect to the first insulator via the insulating layer,
In the second period,
An AC pulse voltage is applied between the first electrode and the second electrode, which are at least partially opposed to or arranged with respect to the first insulator via the insulating layer,
In the third period,
A method of driving a display device, wherein a voltage whose voltage value decreases with the passage of time is applied between a first electrode and a second electrode that are at least partially opposed to or arranged with respect to the first insulator via an insulating layer. . The first insulator is provided with two electrodes at least partially facing or arranged via an insulating layer, one of which is used for a writing period and the other is used for a sustaining period. A driving method of the display device described. A first insulator provided at an opposite position;
A phosphor including phosphor particles interposed between the first insulators;
A second insulator serving as a base for the first insulator and the light emitter;
At least one electrode at least partially facing or disposed through the insulating layer to the first insulator;
Another electrode provided in contact with the second insulator and having the second insulator interposed between the electrode and the electrode;
A translucent substrate opposed to the second insulator through at least the first insulator in part and at least the light emitter in the other part;
A first insulation formed when the first insulator extends in contact with the translucent substrate in a cross section including the first insulator, the second insulator, the light emitter, and the translucent substrate. A display device in which the relationship between the area of the region surrounded by the body, the second insulator, and the translucent substrate and the area occupied by the light emitter is in the range of 0.2 to less than 1 for the former 1 Because
Comprising a driving device that performs display by a series of sequences including a first period, a second period, and a third period;
The driving device includes:
In the first period,
A second insulator is interposed between one electrode that is at least partially opposed to or arranged with respect to the first insulator via an insulating layer, and is in contact with the second insulator and between the one electrode. Apply pulse voltages of opposite polarities to each other at least temporarily between the other electrodes provided,
In the second period,
A second insulator is interposed between one electrode that is at least partially opposed to or arranged with respect to the first insulator via an insulating layer, and is in contact with the second insulator and between the one electrode. AC pulse voltage is applied between the other electrodes provided,
In the third period,
A second insulator is interposed between one electrode that is at least partially opposed to or arranged with respect to the first insulator via an insulating layer, and is in contact with the second insulator and between the one electrode. A display device that applies a voltage that decreases with the passage of time between another electrode provided. A first insulator provided at an opposite position;
A phosphor including phosphor particles interposed between the first insulators;
A second insulator serving as a base for the first insulator and the light emitter;
A first electrode and a second electrode at least partly facing or arranged with respect to the first insulator via an insulating layer;
A third electrode provided in contact with the second insulator and interposing the second insulator between the first electrode or the second electrode;
A translucent substrate opposed to the second insulator through at least the first insulator in part and at least the light emitter in the other part;
A first insulation formed when the first insulator extends in contact with the translucent substrate in a cross section including the first insulator, the second insulator, the light emitter, and the translucent substrate. A display device in which the relationship between the area of the region surrounded by the body, the second insulator, and the translucent substrate and the area occupied by the light emitter is in the range of 0.2 to less than 1 for the former 1 Because
Comprising a driving device that performs display by a series of sequences including a first period, a second period, and a third period;
The driving device includes:
In the first period,
A pulse voltage having opposite polarities is applied simultaneously at least temporarily between the first electrode and the third electrode, which are at least partially opposed to or arranged with respect to the first insulator via the insulating layer,
In the second period,
An alternating pulse voltage is applied between the first electrode and the second electrode at least partially facing or disposed via the insulating layer to the first insulator;
In the third period,
A display device that applies a voltage whose voltage value decreases with the passage of time between a first electrode and a second electrode that are at least partially opposed to or arranged with respect to a first insulator via an insulating layer. 5. The first insulator is provided with two electrodes at least partially facing or arranged via an insulating layer, one of which is used during a writing period and the other is used during a sustaining period. The display device described. The display device according to claim 4, wherein a surface layer of the light emitter is porous. The display device according to claim 4, wherein the light emitter is porous. A gas is interposed between the light emitter and at least one electrode at least partially facing or disposed through the insulating layer with respect to the first insulator, and the gas contains at least oxygen or nitrogen The display device according to claim 4 or 5, comprising a gas. A gas is interposed between the light emitter and at least one electrode at least partially facing or disposed through the insulating layer with respect to the first insulator, and the gas contains at least oxygen or nitrogen The display device according to claim 4, wherein the xenon gas is a mixed gas having a volume ratio of 2% or less.

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