JP2009032581A - Plasma display device and plasma display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plasma display panel which can display high-contrast images even in a bright environment. <P>SOLUTION: This is equipped with a plasma display panel which has a front face plate including a bus electrode which is a reflection element to reflect a part of wavelength range of light in visible light relatively more strongly, and a rear face plate opposedly arranged to this front face plate and which emits display light by light emission of a fluorescent material of the rear face plate by discharge in a discharge space between the front face plate and the rear face plate, and with a front filter opposedly arranged to the front face plate and including a transmission element which transmits the display light. The transmission element is a first chromatic color to absorb a part of wavelength range of light in visible light more strongly, and the reflection element is a second chromatic color which is the complementary color to the first chromatic color. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a plasma display device and a plasma display panel.

  In recent years, expectations for flat display devices that replace CRT display devices have increased, and liquid crystal display devices, plasma display devices, and the like with reduced depth have become widespread. In particular, a plasma display device is often used for a large screen flat display device.

  The plasma display device mainly includes a plasma display panel and a front filter. A plasma display panel is a display device that generates visible light by exciting phosphors with ultraviolet rays generated by gas discharge, and forms an image by controlling light emission for each discharge cell that partitions a discharge space.

  For example, in a matrix display type plasma display panel, a plurality of electrodes (display electrodes and address electrodes) are arranged in a lattice pattern, and an image is formed by selectively emitting light from discharge cells that intersect each electrode.

  The light emission principle of each discharge cell is as follows. That is, when a pulsed AC voltage of several tens to several hundreds kHz is applied between the opposing electrodes of the discharge cell to be lit, wall charges are accumulated and display discharge occurs, and the components of the discharge gas enclosed in the discharge cell Ultraviolet rays are emitted from Xe. The emitted ultraviolet light excites red, blue, and green phosphors formed in the discharge cell to generate visible light of each color. Here, one set of discharge cells of three colors is used as one pixel, and the full color display of 16.7 million colors is possible by controlling the emission intensity of each color in, for example, 256 levels.

  As described above, the light emission of the plasma display panel uses the discharge phenomenon, so the response speed is fast, and since the phosphor is used similarly to the CRT, the color reproducibility is good, so it is suitable for displaying moving images such as TV images. ing. In addition, because of its structure, the plasma display panel can realize a large screen relatively easily, is self-luminous, has no viewing angle dependency, and has an excellent image display capability with high contrast in a dark room. As a large-screen TV receiver, demand is rapidly expanding.

  However, since a high-reflectance phosphor is formed in each discharge cell of the plasma display panel, high contrast can be realized in a dark environment, but reflection of outside light is large in a bright environment and the contrast is lowered. There is a problem that it is easy. Therefore, there is a demand for a plasma display panel that can maintain high contrast even in a bright environment.

  In response to such a request, for example, a stripe-shaped light absorption layer is arranged on the front panel (front plate) so as to overlap with the partition walls defining the discharge space, and an optical filter arranged on the observer side of the front panel. A technique of providing a light absorption layer inside is known. Thereby, the light that reaches the plasma display panel and is reflected internally can be attenuated.

  In addition, a technique for improving the contrast by controlling the transmittance in visible light of a front panel of a plasma display panel or a filter installed on the surface of the front panel has been proposed (Patent Document 1). In patent document 1, the average transmittance | permeability with respect to the visible light of the filter installed in the display plate side of the front plate of a plasma display panel or a front plate is 30-80%, and the transmittance | permeability has a dip part in the range of 450-650 nm. It is supposed that the contrast is improved by taking the configuration.

  In addition, a technique (Patent Document 2) is proposed that improves the contrast of the plasma display panel by coloring the dielectric layers of the front substrate of the plasma display panel and the dielectric layer of the back plate in a complementary color relationship.

  In addition, a technology for reducing the reflection luminance during driving by forming a groove in the partition wall of the back plate of the plasma display panel and forming an antireflection layer in the groove to improve the contrast of the plasma display panel (Patent Document 3) A technique (Patent Document 4) has been proposed in which the dielectric layer of the front plate and the partition walls of the back plate are colored in a complementary color relationship to reduce external light reflection luminance and improve contrast.

In addition, a technique (Patent Document 5) in which a complementary color filter having a light transmission characteristic that has a complementary color relationship with respect to a spectral characteristic of reflected light of a plasma display panel is proposed.
JP 2000-106092 A JP 2005-63961 A JP 2006-114482 A JP 2005-063943 A JP 2004-109545 A

  However, the conventional plasma display device in which the light absorption layer is provided inside the front panel and the optical filter has a problem that the panel luminance is lowered because the image light to be observed is also absorbed by the light absorption layer.

  Further, in the configuration of Patent Document 1, an example is shown in which the hue of the front plate and the filter of the plasma display panel are complementary to each other. However, in Patent Document 1, the content is defined for the transmission characteristics, and the influence on the reflection element and the reflection characteristics of the plasma display panel is not considered.

  In the configuration of Patent Document 2, an example is shown in which the hues of the dielectric layer of the front plate and the dielectric layer of the back plate are complementary to each other. Patent Document 2 discloses that external light reflection is reduced by a light absorption effect of a complementary color-related dielectric layer. However, Patent Document 2 does not consider the influence of the transmissive element and the reflective element in the entire plasma display device including the front filter.

  Moreover, in the structure of patent document 3, the example which forms a groove | channel in the partition of a backplate and forms an antireflection layer in the part is shown. However, Patent Document 3 is a manufacturing method and configuration for reducing reflection, and does not consider the influence of the transmissive element of the plasma display device.

  Further, in the configuration of Patent Document 4, an example is shown in which the hues of the dielectric layer of the front plate of the plasma display panel and the color of the partition walls of the back plate are complementary to each other. However, Patent Document 4 does not consider the influence on the transmissive element and the reflective element in the entire plasma display device including the front filter.

  Further, in the configuration of Patent Document 5, an example is shown in which a complementary color filter having a light transmission characteristic that has a complementary color relationship with respect to the spectral characteristic of the reflected light of the plasma display panel is used. However, Patent Document 5 does not disclose means for implementing a complementary color filter.

  Accordingly, an object of the present invention is to provide a plasma display device and a plasma display panel that can display an image with high contrast even in a bright environment.

  A plasma display device of the present invention includes a front plate including a bus electrode that is a reflective element that relatively strongly reflects light in a part of a wavelength region in visible light, and a back plate disposed opposite to the front plate. A plasma display panel that emits display light by emitting a phosphor on the back plate by discharging into a discharge space between the front plate and the back plate, and a transmissive element that is disposed to face the front plate and transmits the display light A transmissive element is a first chromatic color that absorbs light in a certain wavelength range in visible light relatively strongly, and the reflective element is a complementary color relationship with the first chromatic color. Is the second chromatic color.

  The plasma display panel of the present invention has a front plate and a back plate disposed opposite to the front plate, and displays the phosphor on the back plate by emitting light to a discharge space between the front plate and the back plate. A plasma display panel that emits light, wherein the front plate has a glass substrate that is a first chromatic color that absorbs light in a part of a wavelength region in visible light relatively strongly, and the back plate side of the glass substrate. And a bus electrode that is a reflective element that relatively strongly reflects light in a part of the wavelength range in visible light, and the reflective element has a complementary color relationship with respect to the first chromatic color. It is a chromatic color.

  Thus, according to the present invention, it is possible to provide a plasma display device and a plasma display panel that can display an image with high contrast even in a bright environment.

  In the following embodiments, the transmissive element is a first chromatic color that absorbs light in a part of the wavelength range in the visible light relatively strongly, and the reflective element is in a complementary color relationship with the first chromatic color. 2. A plasma display capable of displaying a high-contrast image even in a bright environment by using the second chromatic color that is a chromatic color of 2 and reflects light in a part of the wavelength range of visible light relatively strongly. The apparatus and the plasma display panel will be described.

(Embodiment 1)
FIG. 1 is a schematic cross-sectional view showing the configuration of plasma display apparatus 1 in the first exemplary embodiment. The plasma display device 1 includes a plasma display panel 2 and a front filter 3. The front filter 3 is installed at a distance from the plasma display panel 2. The plasma display panel 2 includes a front panel (front plate) 10 and a back panel (back plate) 20 that is spaced from and opposed to the front panel 10. A discharge gas such as Xe, He, Ne or the like is sealed in a discharge space that is a gap between the front panel 10 and the back panel 20. FIG. 2 shows a perspective view of the configuration of plasma display panel 2 in the first exemplary embodiment.

<Plasma display panel 2>
<Rear panel 20>
The back panel 20 includes a phosphor layer 24, a partition wall 25, a dielectric layer 22, an address electrode 23, and a back substrate 21 in order from the viewer side. More specifically, for example, an address electrode 23 and a dielectric layer 22 are formed so as to cover the address electrode 23 on the viewer-side surface of the rear substrate 21 made of a glass substrate or the like. A partition wall 25 is formed so as to protrude in the direction. A phosphor is applied to the surfaces of the partition walls 25 and the dielectric layer 22 so as to leave only the tops of the partition walls 25, thereby forming the phosphor layer 24.

  In the first embodiment, an example in which the adhesive layer 34 has a first chromatic color will be described.

<Front panel 10>
The front panel 10 includes a front substrate 16 made of, for example, a glass substrate, a counter electrode 17, a dielectric layer 12, a light absorption layer 13, and a protective layer 11. More specifically, a counter electrode 17 having a two-layer structure of a transparent electrode 15 having a high transmittance and a bus electrode 14 having a low resistance value and the light absorption layer 13 are formed on the surface of the front substrate 16 on the back panel side. . The dielectric layer 12 covers the transparent electrode 15, the bus electrode 14, and the light absorption layer 13. Further, a protective layer 11 is formed on the surface of the dielectric layer 12 on the back panel side.

  The counter electrode 17 is configured to have a short electrode width in the horizontal direction in FIG. 1, and a current corresponding to one discharge cell is energized. Further, since the conduction path is configured to be long in the depth direction of FIG. 1 and the currents of the respective discharge cells are added together, it is necessary to reduce the resistance value. Therefore, the counter electrode 17 is not transparent and has a low resistance value, for example, a metal such as chromium, copper, or silver, to the transparent electrode 15 using a thin film transparent material such as an indium tin oxide (ITO) film or a tin oxide film. A two-layer structure is provided in which a bus electrode 14 using a material is provided. In addition, the bus electrode 14 acts as a reflection element when optical characteristics are considered. The color of the bus electrode material is selected so as to be brown, for example. Further, the bus electrode material may be colored to be brown.

  In the plasma display panel 2 configured as described above, when a pulsed AC voltage is applied to the pair of counter electrodes 17 of the discharge cell, display discharge occurs and ultraviolet rays are generated. The generated ultraviolet light excites the phosphor of the phosphor layer 24 formed on the rear panel to generate visible light (display light) and emits it as image light to the viewer side.

<Front filter 3>
The front filter 3 is disposed to face the front panel 10 and is spaced from the plasma display panel 2. For the front filter 3, for example, a functional film is bonded to both surfaces of a substrate 33 made of glass or the like. Specifically, on the plasma display panel 2 side, an anti-electromagnetic interference film 31 is adhered to the substrate 33 via an adhesive layer 32, and on the observation side, an antireflection film 35 is attached to the adhesive layer 34 colored in blue. It is adhered to the substrate 33 via The front filter 3 includes a material having a near infrared blocking function in the adhesive layer 32.

  In the plasma display panel 2, when the luminous efficiencies of the three primary colors red, green, and blue are viewed, the blue luminous efficiency is relatively low. For this reason, desired white balance is obtained by suppressing green and red light emission from the original ability. In the present embodiment, the adhesive layer 34 of the front filter 3 is colored blue so that the image light transmission element is blue and the absorption on the long wavelength side is increased. Regarding the image light, since there is a margin on the long wavelength side, the white luminance does not decrease due to blue coloring.

  On the other hand, the long wavelength component of external light is absorbed and the amount of reflected light can be reduced. In addition, although the reflected light is colored blue, the reflection characteristics of the brown bus electrode 14 are relatively large on the long wavelength side, and as a result, the reflected light is suppressed from being colored and reflected outside light while being achromatic (gray). Can be reduced. Further, the transmissive element has a planar shape, and is disposed on the outer side (front filter side) of the bus electrode 14 that is the reflective element of the front panel 10 and the partition wall 25 and the dielectric layer 22 that are the reflective elements of the rear panel 20. Therefore, reflection of external light can be effectively reduced.

  Therefore, the adhesive layer 34 that is a transmissive element is set to a first chromatic color (blue), and the bus electrode 14 that is a reflective element is set to a second chromatic color (brown) that is complementary to the first chromatic color. Accordingly, it is possible to provide a plasma display device and a plasma display panel that reduce external light reflection while maintaining high luminance and have high contrast even in a bright environment.

(Embodiment 2)
Next, a second embodiment of the present invention will be described. Since the entire configuration is the same as that of the first embodiment, description thereof is omitted. In the second embodiment, an example in which the front substrate 16 is set to the first chromatic color will be described.

  The front panel 10 of the plasma display panel 2 includes a front substrate 16 made of, for example, a glass substrate, a counter electrode 17, a dielectric layer 12, a light absorbing layer 13, and a protective layer 11. More specifically, a counter electrode 17 having a two-layer structure of a transparent electrode 15 having a high transmittance and a bus electrode 14 having a low resistance value, and a black stripe layer 13 as a light absorption layer are formed on the rear panel side surface of the front substrate 16. And are formed. The dielectric layer 12 covers the transparent electrode 15, the bus electrode 14, and the light absorption layer 13. Further, a protective layer 11 is formed on the surface of the dielectric layer 12 on the back panel side.

  The counter electrode 17 is configured to have a short electrode width in the horizontal direction in FIG. 1, and a current corresponding to one discharge cell is energized. Further, since the conduction path is configured to be long in the depth direction of FIG. 1 and the currents of the respective discharge cells are added together, it is necessary to reduce the resistance value. Therefore, the counter electrode 17 is not transparent and has a low resistance value, for example, a metal such as chromium, copper, or silver, to the transparent electrode 15 using a thin film transparent material such as an indium tin oxide (ITO) film or a tin oxide film. A two-layer structure is provided in which a bus electrode 14 using a material is provided. In addition, the bus electrode 14 acts as a reflection element when optical characteristics are considered. The material of the bus electrode 14 is selected so that the material is, for example, brown. Further, the material of the bus electrode 14 may be colored to be brown.

  In the plasma display panel 2, when the luminous efficiencies of the three primary colors red, green, and blue are viewed, the blue luminous efficiency is relatively low. For this reason, desired white balance is obtained by suppressing green and red light emission from the original ability. In the present embodiment, the front substrate 16 of the front panel of the plasma display panel 2 is colored blue so that the transmission element of the image light is blue and the absorption on the long wavelength side is increased. Regarding the image light, since there is a margin on the long wavelength side, the white luminance does not decrease due to blue coloring.

  On the other hand, the long wavelength component of external light is absorbed and the amount of reflected light can be reduced. In addition, although the reflected light is colored blue, the reflection characteristics of the brown bus electrode 14 are relatively large on the long wavelength side, and as a result, the reflected light is suppressed from being colored and reflected outside light while being achromatic (gray). Can be reduced. Further, the transmissive element has a planar shape, and is disposed on the outer side (front filter side) of the bus electrode 14 that is the reflective element of the front panel 10 and the partition wall 25 and the dielectric layer 22 that are the reflective elements of the rear panel 20. Therefore, reflection of external light can be effectively reduced.

  Accordingly, the front substrate 16 that is a transmissive element is set to a first chromatic color (blue), and the bus electrode 14 that is a reflective element is set to a second chromatic color (brown) that is complementary to the first chromatic color. Accordingly, it is possible to provide a plasma display device and a plasma display panel that reduce external light reflection while maintaining high luminance and have high contrast even in a bright environment.

(Embodiment 3)
Next, a third embodiment of the present invention will be described. Since the entire configuration is the same as that of the first embodiment, description thereof is omitted. In the third embodiment, an example in which the substrate 33 is set to the first chromatic color will be described.

  The front panel 10 of the plasma display panel 2 includes a front substrate 16 made of, for example, a glass substrate, a counter electrode 17, a dielectric layer 12, a light absorbing layer 13, and a protective layer 11. More specifically, a counter electrode 17 having a two-layer structure of a transparent electrode 15 having a high transmittance and a bus electrode 14 having a low resistance value and the light absorption layer 13 are formed on the surface of the front substrate 16 on the back panel side. . The dielectric layer 12 covers the transparent electrode 15, the bus electrode 14, and the light absorption layer 13. Further, a protective layer 11 is formed on the surface of the dielectric layer 12 on the back panel side.

  The counter electrode 17 is configured to have a short electrode width in the horizontal direction in FIG. 1, and a current corresponding to one discharge cell is energized. Further, since the conduction path is configured to be long in the depth direction of FIG. 1 and the currents of the respective discharge cells are added together, it is necessary to reduce the resistance value. Therefore, the counter electrode 17 is not transparent and has a low resistance value, for example, a metal such as chromium, copper, or silver, to the transparent electrode 15 using a thin film transparent material such as an indium tin oxide (ITO) film or a tin oxide film. A two-layer structure is provided in which a bus electrode 14 using a material is provided. In addition, the bus electrode 14 acts as a reflection element when optical characteristics are considered. The color of the bus electrode material is selected so as to be brown, for example. Further, the bus electrode material may be colored to be brown.

  A front filter 3 is installed on the front surface of the plasma display panel 2 at an interval. In the front filter 3, for example, a functional film is bonded to both surfaces of a substrate 33 made of glass colored in blue. Specifically, an electromagnetic wave interference countermeasure film 31 is bonded to the substrate 33 via the adhesive layer 32 on the plasma display panel 2 side, and an antireflection film 35 is bonded to the substrate 33 via the adhesive layer 34 on the observation side. It is glued to. The front filter 3 includes a material having a near infrared blocking function in the adhesive layer 32.

  In the plasma display panel 2, when the luminous efficiencies of the three primary colors red, green, and blue are viewed, the blue luminous efficiency is relatively low. For this reason, desired white balance is obtained by suppressing green and red light emission from the original ability. In the present embodiment, the substrate 33 of the front filter 3 is colored blue so that the transmission element of the image light is blue and the absorption on the long wavelength side is increased. Regarding the image light, since there is a margin on the long wavelength side, the white luminance does not decrease due to blue coloring.

  On the other hand, the long wavelength component of external light is absorbed and the amount of reflected light can be reduced. In addition, although the reflected light is colored blue, the reflection characteristics of the brown bus electrode 14 are relatively large on the long wavelength side, and as a result, the reflected light is suppressed from being colored and reflected outside light while being achromatic (gray). Can be reduced. Further, the transmissive element has a planar shape, and is disposed on the outer side (front filter side) of the bus electrode 14 that is the reflective element of the front panel 10 and the partition wall 25 and the dielectric layer 22 that are the reflective elements of the rear panel 20. Therefore, reflection of external light can be effectively reduced.

  Therefore, by setting the substrate 33 that is a transmissive element to the first chromatic color (blue) and the bus electrode 14 that is the reflective element to the second chromatic color (brown) that is complementary to the first chromatic color, It is possible to provide a plasma display device and a plasma display panel that reduce external light reflection while maintaining high luminance and have high contrast even in a bright environment.

(Embodiment 4)
Next, a fourth embodiment of the present invention will be described. Since the entire configuration is the same as that of the first embodiment, description thereof is omitted. Embodiment 4 demonstrates the example which made the antireflection film 35 the 1st chromatic color.

  The front panel 10 of the plasma display panel 2 includes a front substrate 16 made of, for example, a glass substrate, a counter electrode 17, a dielectric layer 12, a light absorbing layer 13, and a protective layer 11. More specifically, a counter electrode 17 having a two-layer structure of a transparent electrode 15 having a high transmittance and a bus electrode 14 having a low resistance value and the light absorption layer 13 are formed on the surface of the front substrate 16 on the back panel side. . The dielectric layer 12 covers the transparent electrode 15, the bus electrode 14, and the light absorption layer 13. Further, a protective layer 11 is formed on the surface of the dielectric layer 12 on the back panel side.

  The counter electrode 17 is configured to have a short electrode width in the horizontal direction in FIG. 1, and a current corresponding to one discharge cell is energized. Further, since the conduction path is configured to be long in the depth direction of FIG. 1 and the currents of the respective discharge cells are added together, it is necessary to reduce the resistance value. Therefore, the counter electrode 17 is not transparent and has a low resistance value, for example, a metal such as chromium, copper, or silver, to the transparent electrode 15 using a thin film transparent material such as an indium tin oxide (ITO) film or a tin oxide film. A two-layer structure is provided in which a bus electrode 14 using a material is provided. In addition, the bus electrode 14 acts as a reflection element when optical characteristics are considered. The color of the material of the bus electrode 14 is selected so as to be brown, for example. Further, the material of the bus electrode 14 may be colored to be brown.

  A front filter 3 is installed on the front surface of the plasma display panel 2 at an interval. The front filter 3 has a functional film adhered to both surfaces of a substrate 33 made of glass, for example. Specifically, on the plasma display panel 2 side, an electromagnetic interference prevention film 31 is bonded to the substrate 33 via an adhesive layer 32, and on the observation side, a blue-colored antireflection film 35 is attached to the adhesive layer 34. It is adhered to the substrate 33 via The front filter 3 includes a material having a near infrared blocking function in the adhesive layer 32.

  FIG. 3 is a partial cross-sectional view showing the configuration of the antireflection film 35. The antireflection film 35 is composed of, for example, a resin substrate 41 and an antireflection material 42 and is adhered to the substrate 33 via an adhesive layer 34. The resin substrate 41 is made of, for example, a blue-colored PET film having a thickness of 125 μm, and the antireflection material 42 is made of a plurality of thin films by coating or vacuum deposition.

  In the plasma display panel 2, when the luminous efficiencies of the three primary colors red, green, and blue are viewed, the blue luminous efficiency is relatively low. For this reason, desired white balance is obtained by suppressing green and red light emission from the original ability. In the present embodiment, the antireflection film 35 of the front filter 3 is colored blue so that the transmission element of the image light is blue and the absorption on the long wavelength side is increased. Regarding the image light, since there is a margin on the long wavelength side, the white luminance does not decrease due to blue coloring.

  On the other hand, the long wavelength component of external light is absorbed and the amount of reflected light can be reduced. In addition, although the reflected light is colored blue, the reflection characteristics of the brown bus electrode 14 are relatively large on the long wavelength side, and as a result, the reflected light is suppressed from being colored and reflected outside light while being achromatic (gray). Can be reduced. Further, the transmissive element has a planar shape, and is disposed on the outer side (front filter side) of the bus electrode 14 that is the reflective element of the front panel 10 and the partition wall 25 and the dielectric layer 22 that are the reflective elements of the rear panel 20. Therefore, reflection of external light can be effectively reduced.

  Therefore, the antireflection film 35 that is a transmissive element is set to a first chromatic color (blue), and the bus electrode 14 that is a reflective element is set to a second chromatic color (brown) that is complementary to the first chromatic color. Accordingly, it is possible to provide a plasma display device and a plasma display panel that reduce external light reflection while maintaining high luminance and have high contrast even in a bright environment.

  In the present embodiment, the example in which the blue coloration of the antireflection film 35 is configured by the coloration of the resin substrate 41 has been described, but the antireflection material 42 may be configured by blue coloration.

(Embodiment 5)
Next, a fifth embodiment of the present invention will be described. Since the entire configuration is the same as that of the first embodiment, description thereof is omitted. Embodiment 5 demonstrates the example which made the electromagnetic wave disturbance countermeasure film 31 the 1st chromatic color.

  The front panel 10 of the plasma display panel 2 includes a front substrate 16 made of, for example, a glass substrate, a counter electrode 17, a dielectric layer 12, a light absorbing layer 13, and a protective layer 11. More specifically, a counter electrode 17 having a two-layer structure of a transparent electrode 15 having a high transmittance and a bus electrode 14 having a low resistance value and the light absorption layer 13 are formed on the surface of the front substrate 16 on the back panel side. . The dielectric layer 12 covers the transparent electrode 15, the bus electrode 14, and the light absorption layer 13. Further, a protective layer 11 is formed on the surface of the dielectric layer 12 on the back panel side.

  The counter electrode 17 is configured to have a short electrode width in the horizontal direction in FIG. 1, and a current corresponding to one discharge cell is energized. Further, since the conduction path is configured to be long in the depth direction of FIG. 1 and the currents of the respective discharge cells are added together, it is necessary to reduce the resistance value. Therefore, the counter electrode 17 is not transparent and has a low resistance value, for example, a metal such as chromium, copper, or silver, to the transparent electrode 15 using a thin film transparent material such as an indium tin oxide (ITO) film or a tin oxide film. A two-layer structure is provided in which a bus electrode 14 using a material is provided. In addition, the bus electrode 14 acts as a reflection element when optical characteristics are considered. The color of the material of the bus electrode 14 is selected so as to be brown, for example. Further, the material of the bus electrode 14 may be colored to be brown.

  A front filter 3 is installed on the front surface of the plasma display panel 2 at an interval. The front filter 3 has a functional film adhered to both surfaces of a substrate 33 made of glass, for example. Specifically, an electromagnetic interference prevention film 31 colored in blue is adhered to the substrate 33 via an adhesive layer 32 on the plasma display panel 2 side, and an antireflection film 35 is attached to the adhesive layer 34 on the observation side. It is adhered to the substrate 33 via The front filter 3 includes a material having a near infrared blocking function in the adhesive layer 32.

  FIG. 4 shows the configuration of the electromagnetic wave interference countermeasure film 31. 4A is a partial cross-sectional view, and FIG. 4B is a front view seen from the device side. The electromagnetic wave interference countermeasure film 31 is made of, for example, a resin substrate 43, a metal material 44, and a resin 45 that covers the metal material 44 and planarizes the surface, and is adhered to the substrate 33 through an adhesive layer 32. For example, the resin substrate 43 is made of a blue-colored PET film having a thickness of 125 μm, and the metal material 44 is formed by a copper thin film lattice pattern, and the metal material 44 is covered with a transparent resin 45 to flatten the surface. .

  In the plasma display panel 2, when the luminous efficiencies of the three primary colors red, green, and blue are viewed, the blue luminous efficiency is relatively low. For this reason, desired white balance is obtained by suppressing green and red light emission from the original ability. In the present embodiment, the electromagnetic wave interference countermeasure film 31 of the front filter 3 is colored blue so that the transmission element of the image light is blue and the absorption on the long wavelength side is increased. Regarding the image light, since there is a margin on the long wavelength side, the white luminance does not decrease due to blue coloring.

  On the other hand, the long wavelength component of external light is absorbed and the amount of reflected light can be reduced. In addition, although the reflected light is colored blue, the reflection characteristics of the brown bus electrode 14 are relatively large on the long wavelength side, and as a result, the reflected light is suppressed from being colored and reflected outside light while being achromatic (gray). Can be reduced. Further, the transmissive element has a planar shape, and is disposed on the outer side (front filter side) of the bus electrode 14 that is the reflective element of the front panel 10 and the partition wall 25 and the dielectric layer 22 that are the reflective elements of the rear panel 20. Therefore, reflection of external light can be effectively reduced.

  Therefore, the electromagnetic wave interference countermeasure film 31 that is a transmission element is set to the first chromatic color (blue), and the bus electrode 14 that is the reflection element is set to the second chromatic color (brown) that is complementary to the first chromatic color. Accordingly, it is possible to provide a plasma display device and a plasma display panel that reduce external light reflection while maintaining high luminance and have high contrast even in a bright environment.

  In the present embodiment, the example in which the blue coloring of the electromagnetic wave interference countermeasure film 31 is configured by the coloring of the resin substrate 43 has been described. However, the transparent resin 45 that covers the metal material 44 and flattens the surface is colored blue. May be configured.

  Moreover, in this Embodiment, although the example comprised with the lattice pattern of a metal material was demonstrated as a structure of the electromagnetic wave interference countermeasure film 31, in the structure which measures electromagnetic wave interference with a transparent conductive film with low resistance value, the said transparent conductive film is Even if it is colored blue, the same effect is obtained.

(Embodiment 6)
Next, a sixth embodiment of the present invention will be described. Since the entire configuration is the same as that of the first embodiment, description thereof is omitted. In the sixth embodiment, an example in which the adhesive layer 32 has a first chromatic color will be described.

  The front panel 10 of the plasma display panel 2 includes a front substrate 16 made of, for example, a glass substrate, a counter electrode 17, a dielectric layer 12, a light absorbing layer 13, and a protective layer 11. More specifically, a counter electrode 17 having a two-layer structure of a transparent electrode 15 having a high transmittance and a bus electrode 14 having a low resistance value and the light absorption layer 13 are formed on the surface of the front substrate 16 on the back panel side. . The dielectric layer 12 covers the transparent electrode 15, the bus electrode 14, and the light absorption layer 13. Further, a protective layer 11 is formed on the surface of the dielectric layer 12 on the back panel side.

  The counter electrode 17 is configured to have a short electrode width in the horizontal direction in FIG. 1, and a current corresponding to one discharge cell is energized. Further, since the conduction path is configured to be long in the depth direction of FIG. 1 and the currents of the respective discharge cells are added together, it is necessary to reduce the resistance value. Therefore, the counter electrode 17 is not transparent and has a low resistance value, for example, a metal such as chromium, copper, or silver, to the transparent electrode 15 using a thin film transparent material such as an indium tin oxide (ITO) film or a tin oxide film. A two-layer structure is provided in which a bus electrode 14 using a material is provided. In addition, the bus electrode 14 acts as a reflection element when optical characteristics are considered. The color of the material of the bus electrode 14 is selected so as to be brown, for example. Further, the material of the bus electrode 14 may be colored to be brown.

  A front filter 3 is installed on the front surface of the plasma display panel 2 at an interval. The front filter 3 has a functional film adhered to both surfaces of a substrate 33 made of glass, for example. Specifically, on the plasma display panel 2 side, an electromagnetic wave interference countermeasure film 31 is bonded to the substrate 33 via a blue colored adhesive layer 32, and on the observation side, an antireflection film 35 is attached to the adhesive layer 34. It is adhered to the substrate 33 via The front filter 3 includes a material having a near infrared blocking function in the adhesive layer 32.

  In the plasma display panel 2, when the luminous efficiencies of the three primary colors red, green, and blue are viewed, the blue luminous efficiency is relatively low. For this reason, desired white balance is obtained by suppressing green and red light emission from the original ability. In the present embodiment, the adhesive layer 32 of the front filter 3 is colored blue so that the image light transmission element is blue and the absorption on the long wavelength side is increased. Regarding the image light, since there is a margin on the long wavelength side, the white luminance does not decrease due to blue coloring.

  On the other hand, the long wavelength component of external light is absorbed and the amount of reflected light can be reduced. In addition, although the reflected light is colored blue, the reflection characteristics of the brown bus electrode 14 are relatively large on the long wavelength side, and as a result, the reflected light is suppressed from being colored and reflected outside light while being achromatic (gray). Can be reduced. Further, the transmissive element has a planar shape, and is disposed on the outer side (front filter side) of the bus electrode 14 that is the reflective element of the front panel 10 and the partition wall 25 and the dielectric layer 22 that are the reflective elements of the rear panel 20. Therefore, reflection of external light can be effectively reduced.

  Therefore, the adhesive layer 32 that is the transmissive element is set to the first chromatic color (blue), and the bus electrode 14 that is the reflective element is set to the second chromatic color (brown) that is complementary to the first chromatic color. Accordingly, it is possible to provide a plasma display device and a plasma display panel that reduce external light reflection while maintaining high luminance and have high contrast even in a bright environment.

(Modification)
In the first to sixth embodiments, the example in which the front filter 3 is installed on the front surface of the plasma display panel 2 at an interval has been described. However, the front filter 3 is directly attached to the observation side surface of the plasma display panel 2. Anyway. In this case, when a transparent resin substrate is used instead of the glass substrate of the front filter 3, the productivity is further improved.

  Moreover, although the front filter 3 showed about the example in which the material provided with the near-infrared shielding function was contained in the adhesion layer 32, you may include it in the adhesion layer 34 of the antireflection film 35.

  In the front filter 3, an example in which a material having a near-infrared blocking function is included in the adhesive layer 32 has been described. In addition, between the antireflection film 35 and the adhesive layer 34, and the electromagnetic wave interference countermeasure film 31 and the adhesive You may make it the structure which coat | covers the material provided with the near-infrared shielding function between the layers 32. FIG.

  In the present embodiment, the case where one element is made the first chromatic color as the transmissive element has been described. However, two or more transmissive elements may be combined and colored.

  The present invention is suitable for TV receivers, information terminal displays, and the like that require display of bright images with high contrast.

Schematic sectional view showing a configuration of a plasma display device in an embodiment The perspective view which shows the structure of the plasma display panel in embodiment The fragmentary sectional view which shows the structure of the anti-reflective film in embodiment 4A is a partial cross-sectional view of the configuration of the electromagnetic interference prevention film in the embodiment, and FIG. 4B is a front view of the configuration of the electromagnetic interference prevention film in the embodiment as viewed from the device side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plasma display apparatus 2 Plasma display panel 3 Front filter 10 Front panel 11 Protective layer 12 Dielectric layer 13 Light absorption layer 14 Bus electrode 15 Transparent electrode 16 Front substrate 20 Rear panel 21 Rear substrate 22 Dielectric layer 23 Address electrode 24 Phosphor Layer 25 Partition 31 Electromagnetic wave interference prevention films 32 and 34 Adhesive layer 33 Substrate 35 Antireflection film 41 and 43 Resin substrate 42 Antireflection material 44 Metal material 45 Resin

Claims (7)

A front plate including a bus electrode that is a reflective element that relatively strongly reflects light in a certain wavelength region in visible light;
A back plate disposed opposite to the front plate,
A plasma display panel that emits display light by emitting a phosphor of the back plate by discharging into a discharge space between the front plate and the back plate;
A front filter including a transmission element disposed opposite to the front plate and transmitting the display light;
Comprising
The transmissive element is a first chromatic color that absorbs light in a certain wavelength range in visible light relatively strongly, and the reflective element is a second chromatic color that is complementary to the first chromatic color. Chromatic color,
A plasma display device.   The plasma display apparatus according to claim 1, wherein the transmissive element is planar and is disposed outside the reflective elements of the front plate and the back plate.   3. The plasma display apparatus according to claim 1, wherein the first chromatic color is blue.   The transmissive element includes (1) a substrate, (2) an antireflection film, (3) an adhesive layer for fixing the antireflection film to the substrate, (4) an electromagnetic wave countermeasure film, and (5) the substrate on the substrate. The plasma display device according to any one of claims 1 to 3, wherein the plasma display device is at least one adhesive layer for fixing the electromagnetic wave interference countermeasure film.   5. The plasma display device according to claim 1, wherein the front plate includes a glass substrate, and the glass substrate is the first chromatic color. 6. A plasma display having a front plate and a back plate arranged opposite to the front plate, and emitting display light by emitting phosphors of the back plate by discharging into a discharge space between the front plate and the back plate A panel,
The front plate is disposed on the back plate side of the glass substrate, which is a first chromatic color that absorbs light in a part of the wavelength range in visible light relatively strongly, and in the visible light. A bus electrode that is a reflective element that reflects light in a certain wavelength range relatively strongly,
The reflective element is a second chromatic color that is complementary to the first chromatic color.
A plasma display panel characterized by that.   The plasma display panel according to claim 6, wherein the glass substrate has a planar shape and is disposed outside the reflective elements of the front plate and the back plate.

Images