JP3455267B2 - Color plasma display - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a high definition TV (HDT).
V) Corresponding color plasma display.

[0002]

2. Description of the Related Art Among the matrix display plasma display panels (PDPs), AC drive type surface discharge PDPs have been known as ones suitable for full-color display using a phosphor. For example, a surface-discharge type PDP having a three-electrode structure includes a plurality of electrode pairs each including a pair of sustain electrodes (transparent electrodes) which are covered with a dielectric layer and arranged adjacent to each other in parallel on a display-side substrate, and a rear substrate. It has a plurality of address electrodes covered with a phosphor and arranged so as to be orthogonal to each electrode pair, and the phosphor is caused to emit light by ultraviolet rays generated by surface discharge between the sustain electrodes.

Generally, in such a surface discharge type PDP, full color display is performed, for example, in R (red), G (green),
A discharge cell for light emission of three primary colors of B (blue) is provided, and color display is obtained by controlling light emission.

Various proposals have been made regarding the arrangement of the three color discharge cells, and FIGS. 1 and 2 show typical examples thereof.

That is, in FIG. 1, the three color discharge cells (red discharge cell 10R, green discharge cell 10G, blue discharge cell 10B) are arranged in the order of R, G, B along the scanning line L.
(Hereinafter, the direction along the scan line L (scan line direction)
Is the horizontal direction, and the direction orthogonal to the scanning line L is the vertical direction.
It ) Is arranged in a row, and each row of discharge cells arranged in the horizontal direction corresponds to one scanning line L in the display, and a pair of sustain electrodes 11 and 12, 13 and 14 is arranged in each line. .

In FIG. 1, three color discharge cells arranged in a line in the horizontal direction are associated with one pixel. In addition, in FIG.
Pixels are arranged vertically and horizontally in total of four discharge cells 10R, 10G1.
, 10G2, 10B, and discharge cells 10R, 10B.
The pair of sustain electrodes 15 and 16 are connected to the discharge cell 10 with respect to G2.
A pair of sustain electrodes 17 and 18 are associated with G1 and 10B.

An HDTV having such a discharge cell arrangement is
In order to increase the resolution as a measure, the vertical and horizontal dimensions of each discharge cell are reduced as the number of pixels is increased in the case of FIG. 1, and the three discharge cells 10R, 10G2, and 10B and high visibility G
High-definition is possible by controlling the emission of one (green) discharge cell 10G1 independently.

[0008]

However, in the structure shown in FIG. 1, in order to achieve higher definition, the vertical and horizontal dimensions of the discharge cell must be reduced, which reduces the discharge space, resulting in a decrease in luminous efficiency. There is a problem.

Further, in the discharge cell arrangement shown in FIG. 2, green (G)
Since the area of the discharge cell is twice as large as the area of the other discharge cells of red (R) and blue (B), there is a problem that the brightness of green (G) must be halved.

The present invention has been made in view of such circumstances, and an object thereof is to provide a color plasma display suitable for high-definition full-color display by considering the arrangement of discharge cells.

[0011]

In order to achieve the above object, a color plasma display according to the present invention has the following features.
The invention according to, in a color plasma display in which a discharge cell for red light emission, a discharge cell for blue light emission and a discharge cell for green light emission are arranged in a predetermined order in the scanning line direction, a discharge cell for red light emission and a discharge cell for red light emission are provided. The discharge cells for green light emission, which are approximately half the size of the discharge cells for blue light emission in the scan line direction, are arranged every other discharge cell in the scan line direction, and the discharge cells for green light emission are , Arranged to be displaced in the direction orthogonal to the scanning line by about half of the dimension of the discharge cell in the direction orthogonal to the scanning line, with respect to the arrangement in the red emission discharge cell or the blue emission discharge cell. characterized in that that. The invention according to claim 2 is based on the color plasma display described above, and the discharge cells for red emission and the discharge cells for blue emission are alternately arranged between the discharge cells for green emission in the scanning line direction. It is characterized by being arranged. Claim 3
In the invention according to, on the premise of the color plasma display described above, the discharge cell for red light emission is approximately half the size of the discharge cell for blue light emission in the direction orthogonal to the scanning line in the discharge cell. It is characterized in that they are arranged with a shift in a direction orthogonal to the scanning line.

[0012]

In the color plasma display according to the present invention, the discharge cells for red (R) and blue (B) light emission are halved in the lateral dimension of the discharge cells for green (G) light emission to form two discharge cells. In addition, since the discharge cells for green (G) light emission are arranged in the horizontal direction at intervals of one half of the vertical size, the vertical size of the discharge cells is doubled while maintaining the vertical resolution. Can be Further, since the areas of red (R), green (G), and blue (B) are the same, it is not necessary to reduce the brightness of green (G) by half as in the conventional case.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 3 is a perspective view showing a cross-sectional structure of the PDP according to the present invention, and FIG. 4 is a plan view showing an arrangement relationship between discharge cells and sustain electrodes of the PDP of FIG.

In FIG. 3, the PDP is a reflection type surface discharge PDP having a three-electrode structure, and a pair of glass substrates 21 and 31, which are opposed to each other with a discharge space 40 interposed therebetween, are provided on the inner surface of the glass substrate 21 on the display surface side. A plurality of sustain electrodes (transparent electrodes) S, S ...
., The dielectric layer 23 that covers the sustain electrodes, the MgO layer 24 that covers the dielectric layer 23, and is provided on the rear glass substrate 31 and extends in the vertical direction and is arranged in parallel with each other to partition the light emitting regions of each color, R (red), G (green) that covers the plurality of partition walls 32 that define the gap size of the discharge space 40, and the plurality of address electrodes D that are provided between the partition walls 32 and extend in the direction orthogonal to the sustain electrodes. ), B (blue) of three primary colors of phosphors 33R, 33G, 33B and the like.

The internal discharge space 40 is laterally divided by the partition wall 32, and neon and xenon are used as discharge gas that emits ultraviolet rays for exciting the phosphor in the discharge space 40.
A Penning gas mixed with helium or the like is enclosed.

The sustain electrode (transparent electrode) has a metal electrode layer (auxiliary electrode) which covers a part of the sustain electrode to supplement its conductivity.
May be provided. The phosphors are provided in the order of R, G, B, G from left to right so as to fill the spaces between the partitions 32.

In such a PDP, discharge cells are defined at each intersection of a pair of sustain electrodes and address electrodes.
Each phosphor 33R, 33G, 33 extending continuously in the vertical direction
Of B and 33G, a portion corresponding to each unit light emitting region (discharge cell) is selectively caused to emit light, and full color display is performed by a combination of R, G and B.

In FIG. 4, the display screen shows each unit light emitting region defined by a broken line, that is, R discharge cells 50a1, a2, c1, c2 for red (R) light emission, and G discharge cell for green (G) light emission. 60a1, a2, b1, b2, c1, c2 and B discharge cells 70a1, a2, c1, c2 for emitting blue (B) light. And
A pair of sustain electrodes is associated with each discharge cell. That is, in the scan line L1, the discharge cells 50a1,
A pair of sustain electrodes s for a2, 60a1, a2, 70a1, a2
1 and s2 are the discharge cells 60b1 and b2 in the scan line L2.
On the other hand, a pair of sustain electrodes s2 and s3 are connected to the scan line L3.
In this case, a pair of sustain electrodes s3, s4 is associated with the discharge cells 50c1, c2, 60c1, c2, 70c1, c2.

Note that R, G, and B in the figure represent the emission colors of the respective discharge cells. Here, the lateral dimension of the G discharge cell is set to x / 2, which is half the lateral dimension x of the R and B discharge cells, and further, in the lateral direction, R, G, B,
Arrange in the order of G, and every other, y / of the vertical dimension y
The layout is shifted by 2 in the vertical direction. That is, the G discharge cell is halved in the lateral dimension and divided into two,
The discharge cells are arranged between the R discharge cells and the B discharge cells, and they are arranged alternately in the horizontal direction by half the size of the discharge cells in the vertical direction.

In the figure, focusing on the area A for one pixel, if light emission control is performed with the scanning lines L1 and L2 as one scanning line, the R discharge cell 50a1, the G discharge cell 60a1,
60b1 and B discharge cell 70a1 emit light.

In this case, since the areas of the discharge cells of the respective colors are the same, the luminance is about the same as that of the three cells, and it is not necessary to halve the luminance of green (G) as in the case of FIG.

Further, the scanning lines L1 and L2 are controlled to emit light independently, that is, the R discharge cell 50a1 and the G discharge cell 60.
a1 and B discharge cells 70a1 and G discharge cell 60
By controlling the light emission of b1 independently, it is possible to increase the apparent number of pixels, and it is possible to realize pseudo high definition.

As described above, by arranging every other G discharge cell in the horizontal direction, the resolution in the horizontal direction is increased, and by arranging every other G discharge cell in a stepwise manner, the resolution in the vertical direction is increased. Can be maintained for high definition. Further, when the same screen size and the same number of pixels are used, the vertical dimension of the discharge cell of the present application can be twice as large as that in FIGS. In addition, the electrode length of the projecting portion of the sustain electrode pair facing each other in the discharge cell can be increased, so that the discharge cell of the present application has better luminous efficiency than those of FIGS. 1 and 2.

In this embodiment, the green (G) G discharge cell 60 is divided into two cells by halving the horizontal dimension, and the green (G) G discharge cell 60 is set to 1 in the horizontal direction.
Although the description has been given of the case where the plates are arranged in a staggered manner by half the size in the vertical direction every other half, and this is not limited to this example, as shown in FIG. 5, a green (G) G discharge cell is provided. Alternatively, the pair of 60 and blue (B) B discharge cells 70 may be alternately arranged in the horizontal direction and may be vertically shifted by approximately half y / 2 of the vertical dimension y.

In this case, the R discharge cells 50a1 and G discharge cells 60a1 and the G discharge cells 60b1 and B discharge cells 70b1 are controlled to emit light independently, thereby increasing the apparent number of pixels and increasing the pseudo precision. Is possible.

Further, the structure of the sustain electrodes may be as shown in FIGS. 6 and 7. Furthermore, as shown in FIG. 8, the green (G) G discharge cell is divided into two by halving its vertical size, and the two are arranged next to each other. Is approximately half the vertical dimension y y / 2
Only the vertical direction may be shifted.

The B discharge cells may also be arranged so as to be vertically displaced by approximately y / 2. In this case, since the G discharge cells are arranged adjacent to each other in the horizontal resolution, the vertical resolution can be maintained although it is slightly lowered.

[0028]

As described above, according to the color plasma display of the present invention, the discharge cells for emitting light of red (R) and blue (B) are arranged in the lateral direction of the discharge cells for green (G). The size was divided into two halves, and two green (G) discharge cells were placed in the horizontal direction, and the green (G) discharge cells were placed in the vertical direction by about half of the vertical size, and the green (G) discharge cells were arranged in a staggered manner by half the size. Therefore, the discharge space is narrowed, that is, the apparent number of pixels is increased without lowering the light emission efficiency, and pseudo high definition can be realized, and the red (R),
Since the areas of green (G) and blue (B) are the same, it is not necessary to halve the brightness of green (G) as in the conventional case.

[Brief description of drawings]

FIG. 1 is a plan view showing an arrangement relationship between a discharge cell and a sustain electrode of a conventional PDP.

FIG. 2 is a plan view showing a positional relationship between a conventional PDP and discharge cells.

FIG. 3 is a perspective view showing a partial cross-sectional structure of the PDP of the present invention.

FIG. 4 is a plan view showing an arrangement relationship between discharge cells and sustain electrodes of the PDP according to the present invention.

FIG. 5 is a diagram showing another embodiment when the arrangement relationship of FIG. 4 is changed.

6 is a diagram showing another embodiment in which the electrode structure of FIG. 4 is changed.

FIG. 7 is a diagram showing another embodiment when the electrode structure of FIG. 5 is changed.

FIG. 8 is a diagram showing another embodiment when the arrangement relationship of FIG. 4 is changed.

[Explanation of symbols]

50a1, 50a2 R discharge cell 60a1, 60a2 G discharge cell 70a1, 70a2 B discharge cells s1, s2, s3, s4 sustain electrodes

Claims (3)

(57) [Claims] 1. A color plasma display in which a discharge cell for red light emission, a discharge cell for blue light emission and a discharge cell for green light emission are arranged in a predetermined order in a scanning line direction, wherein a discharge cell for red light emission and a discharge cell for red light emission are provided. The discharge cells for green light emission, which are approximately half the size of the discharge cells for blue light emission in the scan line direction, are arranged every other discharge cell in the scan line direction, and the discharge cells for green light emission are , Arranged to be displaced in the direction orthogonal to the scanning line by about half of the dimension of the discharge cell in the direction orthogonal to the scanning line, with respect to the arrangement in the red emission discharge cell or the blue emission discharge cell. color plasma display, characterized in that that. 2. The discharge cells for red light emission and the discharge cells for blue light emission are alternately arranged between the discharge cells for green light emission in the scanning line direction. The color plasma display described in. 3. The discharge cells for red light emission are arranged in the direction orthogonal to the scan lines by about half the dimension of the discharge cells for blue light emission in the direction orthogonal to the scan lines in the discharge cells. The color plasma display according to claim 1 or 2, wherein the color plasma displays are arranged so as to be offset from each other.