WO2009157046A1

WO2009157046A1 - Plasma display device

Info

Publication number: WO2009157046A1
Application number: PCT/JP2008/001692
Authority: WO
Inventors: 近藤信義; 佐々木孝
Original assignee: 株式会社日立製作所
Priority date: 2008-06-27
Filing date: 2008-06-27
Publication date: 2009-12-30

Abstract

A plasma display device comprises a plasma display panel (PDP) having a plurality of cells arranged in the shape of a matrix in a first direction and a second direction intersecting with the first direction and a roof extendedly provided in the first direction for each display line and arranged in the image display surface side of the PDP. The roof comprises a roof base portion which transmits visible light and a reflection layer which is extendedly provided in the first direction on the upper surface of the roof base portion and which reflects the visible light generated from a cell to the anterior inferior side. For example, the roof base portion is extendedly provided in the first direction covering a portion of the cell, and protruded forward from the image display surface side, and the upper portion of the roof base portion is formed from the image display surface side to the anterior inferior side. The reflection layer is provided in such a manner that at least an anterior side portion covers a portion of the cell. As a result, it is possible to improve visibility from the obliquely downward direction of the PDP, securing visibility from the front surface direction of the PDP.

Description

Plasma display device

The present invention relates to a plasma display device.

The plasma display device (PDP device) has a plasma display panel (PDP) in which a plurality of cells are arranged in a matrix. A PDP is composed of two glass substrates (a front glass substrate and a back glass substrate) bonded together, and displays an image by generating a discharge in a space (discharge space) formed between the glass substrates. To do. The cells corresponding to the pixels in the image are self-luminous, and are coated with phosphors that generate red, green, and blue visible light in response to ultraviolet rays generated by discharge.

Since the PDP can be displayed on a large screen, it is used as a panel for displaying advertisements and information at stations and stores. For example, the PDP device is installed at a high place near the ceiling of a station or a store. In this case, the illumination light attached to the ceiling is incident on the image display surface of the PDP, the light (illumination light) incident on the PDP is reflected, and the contrast of the image displayed on the PDP is lowered. In order to prevent a decrease in contrast, there has been proposed a PDP in which a crease is provided in a gap between pixels on the surface of a front glass substrate (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 4-298936

In a PDP in which a ridge is provided between pixels, the visibility when the display image of the PDP is viewed from a position along the protrusion direction of the ridge can be ensured, but when the display image of the PDP is viewed from another position. Visibility may be deteriorated. For example, when the ridge of the PDP is horizontal, a part of the visible light emitted from the cell in the diagonally downward direction is blocked by the ridge. For this reason, for example, when the ridge of a PDP installed near the ceiling is horizontal, the visibility of the display image is good at a position far from the PDP, but at a position close to the PDP (for example, a diagonally lower angle at which the elevation angle with respect to the PDP becomes large). Position), the visibility of the displayed image is poor.

An object of the present invention is to improve the visibility of the PDP from an obliquely downward direction while ensuring the visibility from the front direction of the PDP. Another object of the present invention is to improve the contrast of an image.

The plasma display device is provided with a plasma display panel having a plurality of cells arranged in a matrix in a first direction and a second direction intersecting the first direction, and extending in the first direction for each display line, And a ridge disposed on the image display surface side of the plasma display panel. Here, the display line is composed of, for example, a plurality of cells arranged along the first direction. In addition, each ridge is provided with a ridge base portion that transmits visible light and a top surface of the ridge base portion that extends in the first direction and reflects the visible light emitted from the cell to the front lower side. And have a layer. For example, the eaves base portion is provided to extend in the first direction so as to cover a part of the cell, protrude forward from the image display surface side of the plasma display panel, and the upper surface extends from the image display surface side to the front lower side. Is formed. The reflective layer is provided so that at least a portion on the front side covers a part of the cell.

In the present invention, it is possible to improve the visibility of the PDP from an obliquely downward direction while ensuring the visibility of the PDP from the front direction. In the present invention, the contrast of an image can be improved.

It is a figure which shows the PDP apparatus in one Embodiment. It is a figure which shows the principal part of PDP shown in FIG. It is a figure which shows an example of the cross section along the 2nd direction of the PDP apparatus shown in FIG. It is a figure which shows the outline | summary of the visible light emitted from the PDP apparatus installed in the high place. It is a figure which shows an example of the cross section along the 2nd direction of the PDP apparatus in another embodiment.

It is a figure which shows an example of the cross section along the 2nd direction of the PDP apparatus in another embodiment. It is a figure which shows the principal part of PDP in another embodiment. It is a figure which shows an example of the cross section along the 2nd direction of the PDP apparatus using PDP shown in FIG. It is a figure which shows an example of the modification of PDP shown in FIG. It is a figure which shows an example of the modification of the PDP apparatus shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. An arrow D1 in the drawing indicates the first direction D1, and an arrow D2 indicates the second direction D2 orthogonal to the first direction D1 in a plane parallel to the image display surface. An arrow FR indicates the forward direction of the plasma display panel (hereinafter also referred to as PDP). The plasma display device 1 (hereinafter also referred to as a PDP device) includes a plasma display panel 10 having a square plate shape, a louver unit 20 provided on the image display surface 16 side (light output side) of the PDP 10, and an image display surface 16 of the PDP 10. The front housing 30 disposed on the side, the rear housing 40 and the base chassis 50 disposed on the back surface 18 side of the PDP 10, and the circuit unit 60 for driving the PDP 10 attached to the rear housing 40 side of the base chassis 50. , And a double-sided adhesive sheet 70 for attaching the PDP 10 to the base chassis 50. Since the circuit unit 60 includes a plurality of components, the circuit unit 60 is indicated by a dashed box in the figure.

The PDP 10 includes a front substrate portion 12 that constitutes the image display surface 16 and a rear substrate portion 14 that faces the front substrate portion 12. A discharge space (cell) (not shown) is formed between the front substrate portion 12 and the rear substrate portion 14. The front substrate unit 12 and the back substrate unit 14 are formed of, for example, a glass substrate. The louver part 20 is provided between the plurality of ridges 22 extending in the first direction D1 and projecting forward from the image display surface 16 side of the PDP 10, and between the PDP 10 and the ridges 22, facing the PDP 10. It has the heel support plate 24 arranged. Here, the length along the first direction D <b> 1 of the flange 22 is formed to be equal to or less than the width along the first direction D <b> 1 of the opening 32 of the front housing 30. For example, the flange 22 passes through the opening 32 and is provided to protrude forward from the front housing 30. Note that the flange 22 may not protrude forward from the front housing 30.

FIG. 2 shows details of the main part of the PDP 10 shown in FIG. The meanings of the arrows D1, D2, and FR in the figure are the same as those in FIG. As described above, the discharge space DS is formed between the front substrate portion 12 and the rear substrate portion 14 (more specifically, the concave portion of the rear substrate portion 14).

The front substrate portion 12 is provided to extend in the first direction D1 on the surface (lower side in the drawing) of the glass substrate FS (first substrate) facing the glass substrate RS (second substrate). A plurality of X bus electrodes Xb and Y bus electrodes Yb are arranged at intervals. The X bus electrode Xb is connected with an X transparent electrode Xt extending in the second direction D2 from the X bus electrode Xb to the Y bus electrode Yb. A Y transparent electrode Yt extending in the second direction D2 from the Y bus electrode Yb to the X bus electrode Xb is connected to the Y bus electrode Yb. In the illustrated example, the X transparent electrode Xt and the Y transparent electrode Yt face each other along the first direction D1. The transparent electrodes Xt and Yt may be provided so as to face each other along the second direction D2, or face along the oblique direction with respect to the first direction D1 (or the second direction D2). It may be provided as follows.

For example, the X bus electrode Xb and the Y bus electrode Yb are opaque electrodes formed of a metal material or the like, and the X transparent electrode Xt and the Y transparent electrode Yt are transparent that transmit visible light formed of an ITO film or the like. Electrode. The X electrode XE (sustain electrode) is composed of the X bus electrode Xb and the X transparent electrode Xt, and the Y electrode YE (scanning electrode) is composed of the Y bus electrode Yb and the Y transparent electrode Yt. Paired. Then, a discharge (sustain discharge) is repeatedly generated between the X electrode XE and the Y electrode YE paired with each other (more specifically, between the X transparent electrode Xt and the Y transparent electrode Yt).

The transparent electrodes Xt and Yt may be disposed on the entire surface between the bus electrodes Xb and Yb to which the transparent electrodes Xt and Yt are connected and the glass substrate FS. Further, an electrode integral with the bus electrodes Xb and Yb may be formed in place of the transparent electrodes Xt and Yt by the same material (metal material or the like) as the bus electrodes Xb and Yb.

The electrodes Xb, Xt, Yb, Yt are covered with the dielectric layer DL. For example, the dielectric layer DL is an insulating film such as a silicon dioxide film formed by a CVD method. A plurality of address electrodes AE extending in a direction orthogonal to the bus electrodes Xb and Yb (second direction D2) are provided on the dielectric layer DL (lower side in the figure).

The address electrode AE and the dielectric layer DL are covered with a protective layer PL. For example, the protective layer PL is formed of an MgO film having high secondary electron emission characteristics due to cation collision in order to easily generate discharge.

The back substrate part 14 has a glass substrate RS (second substrate) facing the glass substrate FS through the discharge space DS. On the surface of the glass substrate RS that faces the glass substrate FS, the first partition wall (barrier rib) BR1 extending in the second direction D2 and the second partition wall BR2 extending in the first direction D1 are formed. A grid-like partition wall is formed. For example, the barrier ribs BR1 and BR2 are formed by applying a paste-like barrier rib material on the glass substrate RS, followed by drying, sand blasting, and firing processes. The partition walls BR1 and BR2 may be formed integrally with the glass substrate RS by cutting the glass substrate RS with sandblasting or the like.

The partition walls BR1 and BR2 constitute cell side walls. Visible light of red (R), green (G), and blue (B) is excited by ultraviolet rays on the side surfaces of the barrier ribs BR1 and BR2 and the portion of the glass substrate RS surrounded by the barrier ribs BR1 and BR2. The generated phosphors PHr, PHg, and PHb are respectively applied. Hereinafter, the phosphors PHr, PHg, and PHb are also referred to as phosphors PH when they are not distinguished for each color of visible light.

One pixel of the PDP 10 is composed of three cells that generate red, green, and blue light. Here, one cell (one color pixel) is formed in a region surrounded by the barrier ribs BR1 and BR2, for example. In this way, the PDP 10 arranges cells in a matrix in the first direction D1 and the second direction D2 in order to display an image, and alternately arranges a plurality of types of cells that generate light of different colors. It is configured. Although not particularly illustrated, a display line is constituted by cells formed along the bus electrodes Xb and Yb. That is, the display line is composed of a plurality of cells arranged along the first direction D1.

The PDP 10 is configured by bonding the front substrate portion 12 and the rear substrate portion 14 so that the protective layer PL and the partition wall BR are in contact with each other, and enclosing a discharge gas such as Ne or Xe in the discharge space DS.

FIG. 3 shows a cross section along the second direction D2 of the PDP device 1 shown in FIG. 3 shows a cross section of the position where the transparent electrodes Xt and Yt are arranged, and the description of the front case 30, the rear case 40, the base chassis 50, the circuit unit 60, etc. shown in FIG. 1 is omitted. is doing. The meanings of arrows D2 and FR in the figure are the same as those in FIG. The first direction D1 shown in FIG. 1 described above is a direction perpendicular to the paper surface of FIG. Arrows VL, VL1, and VL2 indicated by broken lines in the figure indicate visible light emitted from the cell CL, and an arrow OPT indicated by a broken line indicates light (illumination light, external light, etc.) directed from the outside of the PDP 10 toward the PDP 10. Show. Hereinafter, the light traveling from the outside of the PDP 10 toward the PDP 10 is also referred to as external light OPT without distinguishing between illumination light (light from illumination) and external light.

For example, the barrier ribs BR2 extending in the first direction D1 (perpendicular to the paper surface of FIG. 3) are provided at equal intervals along the second direction D2 at an interval S10, and a plurality of partitions arranged along the second direction D2. The cells CL are arranged between the cells CL. Here, the display line is constituted by a plurality of cells CL arranged along the first direction D1, as described above with reference to FIG. That is, the partition wall BR2 is disposed between display lines adjacent to each other.

庇 22 is provided for each cell CL with respect to the plurality of cells CL arranged along the second direction D2. That is, the bag 22 is arranged on the image display surface side of the PDP 10 for each display line. Each ridge 22 has a ridge base portion VB that transmits visible light VL and a reflective layer RL for reflecting the visible light VL emitted from the cell CL to the front lower side.

庇 The base portion VB is provided extending in the first direction D1 so as to cover a part of the cell CL (upper portion of the cell CL), and protrudes forward from the image display surface side of the PDP 10. For example, the heel base portion VB is formed of polycarbonate or acrylic resin that transmits visible light and has a stable dimension with respect to changes in temperature and humidity. In the illustrated example, the upper surface SF10 of the heel base portion VB is formed in an arc shape from the image display surface side toward the front lower side. As shown in FIG. 5 described later, the upper surface SF10 may be formed on a straight line from the image display surface side toward the front lower side.

The reflective layer RL is provided on the upper surface SF10 of the heel base portion VB so as to extend in the first direction D1, and at least a portion on the front side covers a part of the cell CL (an upper portion of the cell CL). . For example, the reflective layer RL is formed by obliquely depositing aluminum, silver or the like on the heel base portion VB. For example, the width W10 along the second direction D2 of the reflective layer RL is formed to be about 0.3 to 0.7 times the width W20 along the second direction of the cell CL, and the height H10 (front) of the reflective layer RL is formed. Is formed to be about 0.5 to 1 times the width W20 along the second direction of the cell CL. Note that the width W20 may be defined as an effective pixel height because of the width along the second direction of the region where the visible light VL is generated. The interval S10 may be defined as the pixel height with respect to the effective pixel height.

When viewed from the direction perpendicular to the image display surface of the PDP 10 (in front of the PDP 10), the edge of the reflective layer RL on the PDP 10 side is provided at a position overlapping the partition wall BR2 (in the region S20 in the figure), and the reflective layer RL The front edge is provided at a position overlapping the discharge space DS of the cell CL. Thereby, the visible light VL emitted from the phosphor PH of the cell CL is not blocked by the reflective layer RL, and the visible light VL1 toward the front and front lower side of the PDP 10 and the front lower side of the PDP 10 by the reflective layer RL. It is divided into visible light VL2 that is reflected on the surface.

For example, the visible light VL emitted from the phosphor PH in the lower portion of the cell CL toward the front of the PDP 10 and the visible light VL emitted from the phosphor PH toward the oblique lower side of the PDP 10 are applied to the reflective layer RL. It proceeds to the front and diagonally lower side (front lower side) without being blocked. Further, for example, the visible light VL emitted from the phosphor PH in the upper part of the cell CL toward the front of the PDP 10 and the visible light VL emitted from the phosphor PH toward the oblique upper side of the PDP 10 are reflected in the reflective layer RL. Reflects to the front lower side.

Therefore, in this embodiment, it is possible to secure the light quantity of the visible light VL that goes to the front of the PDP 10 and the visible light VL that goes to the front lower side of the PDP 10. In particular, in this embodiment, since the visible light VL emitted from the phosphor PH toward the diagonally upper side of the PDP 10 can be used effectively, the front lower side of the PDP 10 while ensuring the light quantity of the visible light VL toward the front of the PDP 10 It is possible to increase the amount of visible light VL directed to. Thereby, in this embodiment, the visibility from the diagonally downward direction of PDP10 can be improved, ensuring the visibility from the front direction of PDP10.

Further, most of the light OPT traveling from the outside of the PDP 10 toward the cell CL is reflected on the front upper side of the PDP 10 by the reflective layer RL and does not enter the cell CL. Therefore, in this embodiment, it is possible to reduce the amount of external light OPT reflected on the front surface or obliquely lower side of the PDP 10 and improve the contrast of the image displayed on the PDP 10.

In addition, the louver part 20 has the eaves support plate 24 formed integrally with each eaves base part VB. For example, the heel base portion VB and the heel support plate 24 are integrally formed by embossing polycarbonate or acrylic resin that transmits visible light and whose dimensions are stable with respect to changes in temperature and humidity. The And the louver part 20 is being fixed to the image display surface side of PDP10 so that the position with respect to PDP10 may not shift | deviate. For example, the louver portion 20 is attached to the PDP 10 by the adhesive layer 26. The louver part 20 may be fixed to the PDP 10 without using the adhesive layer 26.

FIG. 4 shows an outline of the visible light VL emitted from the PDP device 1 installed at a high place. The meaning of the arrow FR in the figure is the same as in FIG. The observer A looks at the image displayed on the PDP device 1 from a position far from the PDP device 1 (for example, a position where the elevation angle with respect to the PDP device 1 is small). In addition, the observer B looks at the image displayed on the PDP device 1 from a position close to the PDP device 1 (for example, a position where the elevation angle with respect to the PDP device 1 becomes large).

The visible light VL emitted from the PDP device 1 is not blocked by the ridge 22 as described in FIG. 3 described above, and the visible light VL1 toward the front and front lower side of the PDP device 1 and the ridge 22 (more details). Are divided into visible light VL2 reflected by the reflective layer RL) to the lower front side of the PDP device 1. That is, the visible light VL emitted from the PDP device 1 is not blocked by the ridge 22 and is visible light VL1 that reaches the observer A, and the visible light VL1 that is reflected to the observer B side by the ridge 22 and reaches the observer B. Divided into light VL2. In addition, for example, most of the illumination light OPT (not shown) attached to the ceiling is reflected by the ridge 22 (more specifically, the reflective layer RL) to the ceiling side (front upper side of the PDP device 1), and is reflected on the cell CL. Not incident. Therefore, in this embodiment, the visibility when viewing the image displayed on the PDP device 1 from the observer B is improved while ensuring the visibility when viewing the image displayed on the PDP device 1 from the viewer A. it can.

As described above, in this embodiment, the ridge 22 having the reflective layer RL that reflects the visible light VL emitted from the cell CL to the front lower side is provided for each display line on the image display surface side of the PDP 10. Thereby, in this embodiment, the visibility from the diagonally downward direction of PDP10 can be improved, ensuring the visibility from the front direction of PDP10. In this embodiment, since the reflective layer RL is provided on the upper surface SF10 of the heel base portion VB, the amount of external light OPT incident on the PDP 10 can be reduced, and the contrast of the image displayed on the PDP 10 can be reduced. It can be improved.

FIG. 5 shows a cross section along the second direction D2 of the PDP device 1 in another embodiment. FIG. 5 corresponds to the cross section of the PDP device 1 shown in FIG. 3 described above. That is, FIG. 5 shows a cross section at a position where the transparent electrodes Xt and Yt are arranged, and the description of the front case 30, the rear case 40, the base chassis 50, the circuit unit 60, etc. shown in FIG. 1 is omitted. is doing. In this embodiment, a louver portion 21 is provided instead of the louver portion 20 shown in FIG. 3 described above, and the adhesive layer 26 is omitted from the configuration shown in FIG. Other configurations are the same as those of the embodiment described with reference to FIGS. The same elements as those described in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The louver unit 21 is configured with a gutter 22 arranged for each display line on the image display surface side of the PDP 10. Each ridge 22 has a ridge base portion VB2 that transmits visible light VL and a reflective layer RL for reflecting the visible light VL emitted from the cell CL to the front lower side. The heel base portion VB2 is provided so as to cover a part of the cell CL (upper portion of the cell CL) and extend in the first direction D1 (the vertical direction of the paper surface of FIG. 5), and forward from the image display surface side of the PDP 10 Protruding.

For example, the heel base portion VB2 is directly formed on the image display surface (for example, the glass substrate FS) of the front substrate portion 12 by injection molding. The material of the heel base portion VB2 is, for example, polycarbonate or acrylic resin that transmits visible light and whose dimensions are stable with respect to changes in temperature and humidity. In the example shown in the figure, the upper surface SF10 of the heel base portion VB2 is formed on a straight line from the image display surface side toward the front lower side. As shown in FIG. 3 described above, the upper surface SF10 may be formed in an arc shape from the image display surface side toward the front lower side.

The reflective layer RL is provided on the upper surface SF10 of the heel base portion VB2 so as to extend in the first direction D1, and at least a portion on the front side covers a part of the cell CL (an upper portion of the cell CL). . For example, the reflective layer RL is formed by obliquely depositing aluminum, silver or the like on the heel base portion VB. The width W10 and the height H10 of the reflective layer RL are the same as, for example, the embodiment shown in FIG. Further, when viewed from the direction perpendicular to the image display surface of the PDP 10 (in front of the PDP 10), the edge of the reflective layer RL on the PDP 10 side is provided at a position overlapping the partition wall BR2 (in the region S20 in the figure). The front edge portion of the RL is provided at a position overlapping the discharge space DS of the cell CL.

As described above, also in this embodiment, the same effect as that of the embodiment described with reference to FIGS. 1 to 4 can be obtained. Furthermore, in this embodiment, since the heel support plate 24 is omitted, the amount of use of polycarbonate, acrylic resin, or the like can be reduced.

FIG. 6 shows a cross section along the second direction D2 of the PDP device 1 in another embodiment. FIG. 6 corresponds to the cross section of the PDP apparatus 1 shown in FIG. 3 described above. That is, FIG. 6 shows a cross section at a position where the transparent electrodes Xt and Yt are arranged, and the description of the front case 30, the rear case 40, the base chassis 50, the circuit unit 60, etc. shown in FIG. 1 is omitted. is doing. In this embodiment, the light absorption layer AL is added to the structure shown in FIG. 3 described above. Other configurations are the same as those of the embodiment described with reference to FIGS. The same elements as those described in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

Each ridge 22 includes a heel base portion VB that transmits visible light VL, a reflective layer RL for reflecting the visible light VL emitted from the cell CL to the front lower side, and external light OPT (for example, visible light). A light absorbing layer AL that absorbs the light. In the illustrated example, the upper surface SF10 of the heel base portion VB is formed in an arc shape from the image display surface side toward the front lower side. As shown in FIG. 5 described above, the upper surface SF10 may be formed on a straight line from the image display surface side toward the front lower side.

The light absorbing layer AL is provided on the reflective layer RL so as to extend in the first direction D1 (perpendicular to the paper surface of FIG. 6). For example, the light absorption layer AL is formed by obliquely vapor-depositing a material having a higher light absorption rate (for example, a material including a black paint) on the reflective layer RL. Alternatively, for example, the light absorption layer AL is configured by a non-reflective film or the like by multiple coating of an optical thin film. When the light absorption layer AL is formed of a non-reflective film with multiple coatings, for example, the reflection layer RL and the light absorption layer AL can be continuously formed by oblique deposition.

Most of the light OPT traveling from outside the PDP 10 toward the cell CL is blocked by the ridge 22 and does not enter the PDP 10. In this embodiment, since the external light OPT is absorbed by the light absorption layer AL, it is possible to prevent the external light OPT incident on the ridge 22 from being reflected and incident on the PDP 10. That is, in this embodiment, the amount of external light OPT incident on the PDP 10 can be reduced as compared with the configuration in which the light absorption layer AL is not provided. Further, in this embodiment, since the external light OPT is absorbed by the light absorption layer AL, the amount of the external light OPT reflected on the front surface or obliquely below the PDP 10 is reduced compared to the configuration in which the light absorption layer AL is not provided. it can. Thereby, in this embodiment, the contrast of the image displayed on PDP10 can further be improved. Note that the light absorption layer AL may be provided on the flange 22 of the PDP device 1 having the configuration shown in FIG. 5 described above.

As described above, also in this embodiment, the same effect as that of the embodiment described with reference to FIGS. 1 to 4 can be obtained. Furthermore, in this embodiment, since the light absorption layer AL is provided in the ridge 22, the contrast of the image displayed on the PDP 10 can be further improved.

FIG. 7 shows details of a main part of the PDP 10 in another embodiment. The PDP 10 of this embodiment is configured by omitting the second partition wall BR2 from the configuration shown in FIG. 2 described above. Other configurations are the same as those of the embodiment described with reference to FIGS. The same elements as those described in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

On the glass substrate RS, a stripe-shaped partition wall (partition wall BR1) in which the second partition wall BR2 is omitted from the configuration illustrated in FIG. 2 described above is provided. That is, the first partition wall BR1 extending in the second direction D2 is provided on the surface of the glass substrate RS that faces the glass substrate FS. In this case, the cell CL is formed, for example, in a region surrounded by the bus electrodes Xb and Yb and the partition wall BR1.

FIG. 8 shows a cross section along the second direction D2 of the PDP device 1 configured using the PDP 10 shown in FIG. 8 corresponds to the cross section of the PDP device 1 shown in FIG. 3 described above. That is, FIG. 8 shows a cross-section at the position where the transparent electrodes Xt and Yt are arranged, and the description of the front case 30, the rear case 40, the base chassis 50, the circuit unit 60, etc. shown in FIG. 1 is omitted. is doing. The PDP apparatus 1 of this embodiment is the same as the embodiment described with reference to FIGS. 1 to 4 except for the configuration of the PDP 10. The same elements as those described in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The cell CL is formed, for example, between the bus electrodes Xb and Yb that are paired with each other. In the example of the figure, the cells CL are formed at equal intervals along the second direction D2 with an interval S10. Note that the width W20 along the second direction D2 of the region (cell CL) formed between the bus electrodes Xb and Yb paired with each other may be defined as the effective pixel height. The interval S10 may be defined as the pixel height with respect to the effective pixel height.

The reflective layer RL is provided on the upper surface SF10 of the heel base portion VB so as to extend in the first direction D1 (perpendicular to the paper surface of FIG. 8), and at least the front portion is a part of the cell CL (the upper side of the cell CL). Part). When viewed from the direction perpendicular to the image display surface of the PDP 10 (front of the PDP 10), the edge of the reflective layer RL on the PDP 10 side is provided in the region S22, and the edge of the reflective layer RL on the front side is It is provided at a position overlapping the discharge space DS of the cell CL. Here, the region S22 is a lower half region of the region S20 formed between the cells CL arranged along the second direction D2. Note that the PDP 10 shown in FIG. 7 described above may be used in the PDP device 1 having the configuration shown in FIGS. 5 and 6 described above.

As described above, also in this embodiment, the same effect as that of the embodiment described with reference to FIGS. 1 to 4 can be obtained.

In the above-described embodiment, an example in which one pixel includes three cells (red (R), green (G), and blue (B)) has been described. The present invention is not limited to such an embodiment. For example, one pixel may be composed of four or more cells. Alternatively, one pixel may be composed of cells that generate colors other than red (R), green (G), and blue (B), and one pixel may be red (R), green (G), A cell that generates a color other than blue (B) may be included.

In the above-described embodiment, the example in which the second direction D2 is orthogonal to the first direction D1 has been described. The present invention is not limited to such an embodiment. For example, the second direction D2 may intersect the first direction D1 in a substantially perpendicular direction (for example, 90 ° ± 5 °). Also in this case, the same effect as the above-described embodiment can be obtained.

In the above-described embodiment, the example in which the address electrode AE is provided on the front substrate portion 12 has been described. The present invention is not limited to such an embodiment. For example, as shown in FIG. 9, the address electrode AE may be provided on the back substrate portion 14. FIG. 9 shows an example of a modification of the PDP 10 shown in FIG. The meanings of arrows D1, D2 and FR in the figure are the same as those in FIG. In the PDP 10 of FIG. 9, the plurality of address electrodes AE extending in the second direction D2 are provided on the surface of the glass substrate RS facing the glass substrate FS, and are covered with the dielectric layer DL2. On the dielectric layer DL2, a lattice-shaped partition wall is formed which includes a first partition wall (barrier rib) BR1 extending in the second direction D2 and a second partition wall BR2 extending in the first direction D1. ing. For example, the barrier ribs BR1 and BR2 are formed by applying a paste-like barrier rib material on the glass substrate RS, followed by drying, sand blasting, and firing processes. Also in this case, the same effect as the above-described embodiment can be obtained.

In the above-described embodiment, the example in which the louver portion 20 is provided on the PDP 10 via the adhesive layer 26 has been described. The present invention is not limited to such an embodiment. For example, as shown in FIG. 10, an optical filter 19 may be provided between the louver unit 20 and the PDP 10. For example, the optical filter 19 is directly attached to the image display surface 16 side of the PDP 10. For example, the optical filter 19 has a function of reducing the transmittance of visible light in order to improve the contrast of the image of the PDP device 1. The optical filter 19 may have a function of shielding electromagnetic waves.

When the optical filter 19 is provided in the PDP 10, for example, the louver portion 20 is attached to the optical filter 19 via the adhesive layer 26 shown in FIG. Or when the optical filter 19 is provided in PDP10 of the PDP apparatus 1 of the structure shown in FIG. 5 mentioned above, the louver part 21 is directly formed in the optical filter 19, for example. In the configuration not using the optical filter 19 (for example, the configuration shown in FIG. 3 described above), the heel support plate 24 of the louver unit 20 has one or both of the functions of lowering the transmittance and shielding the electromagnetic wave. You may have. Also in this case, the same effect as the above-described embodiment can be obtained.

As described above, the present invention has been described in detail. However, the above-described embodiment and its modification are merely examples of the present invention, and the present invention is not limited thereto. Obviously, modifications can be made without departing from the scope of the present invention.

The present invention can be applied to a plasma display device.

Claims

A plasma display panel having a plurality of cells arranged in a matrix in a first direction and a second direction intersecting the first direction;
For each display line constituted by a plurality of the cells arranged along the first direction, extending in the first direction and provided on the image display surface side of the plasma display panel With
Each kite is
Covering a part of the cell and extending in the first direction, the plasma display panel projects forward from the image display surface side, and an upper surface is formed from the image display surface side toward the front lower side. An eaves base that transmits visible light; and
For extending in the first direction on the upper surface of the heel base portion, at least a portion on the front side covers a part of the cell, and reflects visible light emitted from the cell to the lower front side A plasma display device comprising: a reflective layer.
The plasma display device according to claim 1, wherein
Each kite is
A plasma display device comprising: a light absorption layer that extends in the first direction on the reflection layer and absorbs visible light.
The plasma display device according to claim 1, wherein
A heel support plate provided between the plasma display panel and the heel and disposed opposite the plasma display panel;
The plasma display device, wherein the collar support plate is formed integrally with each of the collar base portions.
The plasma display device according to claim 1, wherein
An edge of the reflective layer on the plasma display side is provided in a lower half region of a region formed between the cells arranged in the second direction.
The plasma display device according to claim 1, wherein
The plasma display is
A first substrate and a second substrate facing each other through a discharge space of the cell;
A plurality of partition walls extending in the first direction on the surface of the second substrate facing the first substrate and disposed between the display lines adjacent to each other;
An edge of the reflective layer on the plasma display side is provided at a position overlapping the partition.