JP2773169B2 - Matrix type display device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a matrix type display device applied to a matrix type display by matrix display, for example, a matrix type secondary electron multiplying flat display device.

[Summary of the Invention]

The present invention relates to a matrix type display device using a matrix display, in which a first, a second, and a third pixel performing different color light display are arranged in two adjacent rows and three adjacent columns. With respect to the display section, a display driving mode is adopted in which one display line element is formed by two adjacent rows of the pixel and two display line elements are formed by three adjacent rows.

Alternatively, for a color display unit having a pixel array in which first, second, and third pixels performing different color light displays are arranged on adjacent three rows and one column, one pixel is disposed in each of the three adjacent pixels. A display drive mode is formed in which display line elements are formed and two display line elements are constituted by four or five adjacent rows.

As described above, in the present invention, the display line element of the color display, that is, the scanning line density is improved to achieve high image quality.

[Conventional technology]

In a display device using a matrix display, for example, a liquid crystal display device, as shown in FIG.
Pixels R, G, and B that emit green and blue light, and one pixel of one color light, for example, G, make up a group of white light emission. When the matrix display unit (4) is configured by arranging pixels in a matrix, 200 sets in the vertical direction, that is, 2 × 200 pixels as 400 pixels
Even if they are arranged, display line elements, so-called scanning lines, are L ₁ , L ₂ ,
L ₃ ‥‥ L ₂₀₀ will be 200 pieces. At this time, even in the image display by two fields and one frame, since the number of scanning lines is small, the scanning lines of the odd field and the even field are actually matched (common), so that the resolution is 200 lines.

On the other hand, as shown in FIG. 7, in a large-screen display, for example, a plurality of light-emitting electron tubes T for displaying a set of pixels R, G, and B of red, green, and blue, for example, are arranged vertically and horizontally. In a display device arranged so as to form a matrix display section (4) as a whole, for example, 200 scanning lines L ₁ , L ₂ , L ₃ ‥‥ L ₂₀₀ are arranged vertically by 200 pieces. At this time, the scanning lines L ₁ , L ₂ , L ₅ ‥‥ L ₁₉₉ are driven in odd fields, and the scanning lines L ₂ , L ₄ , L ₆ ‥‥ L ₂₀₀ are driven in even fields. Even in this case, the resolution becomes 200 when the odd field and the even field are superimposed. Then, in this display device, each light-emitting electron tube T is connected to the three types 4 described in FIG.
Even if a pixel array similar to that shown in FIG. 6 is adopted by emitting one set of pixels G, R, B and G, the resolution is the same. In this case, when every other dot is made to emit light repeatedly, for example, every 1/60 second, flicker becomes noticeable, so that a device such as double-speed scanning is required.

As another example, as shown in FIG. 8A, for example,
For example, a triplet of each of the phosphor pixels R, G, and B is grouped with two adjacent rows and three adjacent columns, and a plurality of sets are arranged vertically and horizontally in a so-called delta arrangement to form a display unit. Electrodes X ₁ , X ₂ , X ₃対
‥, Y _1, Y ₂ Y ₃ when performing display by a matrix-like electrodes by ‥‥ (9H) and (9V), as a set of two neighboring rows for example an odd field, two lines every Y ₁ and Y _2, Y ₅ and Y ₆ ‥‥ by driving the triplet shown enclosed by a chain line a shown in FIG. 8 B performs image display, two lines of every other two rows adjacent in the even field eg Y ₃ and Y ₄ , there is performed the display by driving the triplet shown enclosed by a chain line b shown in FIG. 8 C by Y ₇ and Y ₈ ‥‥. That is, in this case, since the display of the odd field and the display of the even field are not overlapped at all, the display lines, for example, the scanning lines (resolution) in both fields have the number of rows, that is, the number of Y electrodes is, for example, 400. If there are, 400/2 = 200.

[Problems to be solved by the invention]

In the present invention, the resolution problem due to the limitation of the number of scanning lines due to the pixel array described above is solved. For example, by increasing the number of scanning lines by the same number of pixels as before, the apparent number of display lines, that is, the number of scanning lines, is increased. It is an object of the present invention to improve resolution and thus image quality.

[Means for solving the problem]

As shown in FIG. 1A, the present invention provides a matrix type display device in which a first, second, and third pixels, each of which performs a different color light display, that is, a white display by a combination of, for example, red, green, and blue. Has a matrix display unit (4) by a pixel array in which pixels R, G, and B capable of performing the above are arranged on two adjacent rows and three adjacent columns, and the matrix display unit (4) One display line element is formed by two adjacent rows of R, G, and B, and three adjacent rows are formed.
A display driving mode in which two display line elements are constituted by rows is adopted. That is, for example, as shown in FIG.
Display driving is performed by combining R, G, and B to form a display line element of L ₁ , L ₃ , L _5, for example, a scanning line.
As shown in FIG. C surrounded by a dashed line b, there is no display drive in which each pixel R, G, B is completely set by two adjacent rows similarly shifted by one row from the combination of FIG. L ₂ , L ₄て
Of the display line, for example, a scanning line.

Further, in the present invention, as shown in FIG. 2 or FIG. 3, first, second and third pixels which respectively perform different color light display in a matrix type display device, for example, red, green and blue pixels. Pixels R, G, and B capable of performing white display by a combination of the three are provided with a matrix display unit (4) having a pixel array arranged on adjacent three rows and one column, and this matrix display unit (4) On the other hand, pixels R, G, B
, One display line element is formed by three adjacent lines, and two display line elements are formed by four adjacent lines or five lines. That is, for example, the display drive of L ₁ , L ₃ , L ₅ 、, for example, the scan line element is performed by forming the display drive with the pixels R, G, and B as a set by the three adjacent rows in the odd field. In the even-numbered field, there is no display drive in which each pixel R, G, B is completely set by three rows shifted by one row as shown in FIG. 2 or two rows shifted as shown in FIG. To form a display line element of L ₂ , L ₄例 え ば, for example, a scanning line.

[Action]

In the present invention, as described above, the display is performed using each pixel by using a combination shifted by one row or two rows in the arrangement of each pixel between the odd field and the even field, and thereby, for example, With the same number of pixel arrangement lines as before, the effective display line prime number is 2
It is possible to increase the image quality by increasing the scanning line density.

〔Example〕

An example in which the present invention is applied to a secondary electron multiplying display device will be described with reference to FIG. 4 and FIG.

In this case, a front panel (1) and a rear panel (2), each made of a glass plate, face each other substantially parallel to each other, and a peripheral side wall (3S) is disposed around the two between them so as to be airtight, for example, by frit. A vacuum container (3) sealed by a seal is provided. Then, for example, red, green and blue phosphor pixels R and G are provided on the inner surface of the front panel (1).
For example, as shown in FIG. 1, a triplet B and a triplet B are arranged in two rows in the Y direction and three columns in the X direction. On the rear panel (2) side, a plurality of linear cathodes (5) extending in the Y direction in common to a plurality of sets of phosphor pixels are arranged in parallel in the X direction.

On each cathode (5), a grid electrode, that is, a first grid electrode (6) is arranged, for example, in a semi-cylindrical shape so as to surround the front of the cathode (5). The grid formed of the semi-cylindrical metal plate is formed by, for example, piercing a large number of slits (6a) along the circumferential direction thereof in parallel. The grid electrode (6) is provided with legs extending from both sides of the cylindrical portion, and these are attached and fixed to the back panel (2).

And a cathode (5) and a grid electrode (6),
For example, a flat plate type electron beam control mechanism (7) having a through hole forming an electron beam path h corresponding to each of the pixels R, G, B is disposed between the flat panel type electron beam control mechanism (7) and the phosphor screen (4). As shown in FIG. 2, this electron beam control mechanism (7) mainly comprises a secondary electron multiplying means (8), a matrix electrode or matrix modulating means (9), and a cathode (5) thereof.
A flat first low-voltage shield electrode (30) is arranged on the side.

The electron beam control mechanism (7) is, for example, a metal plate via a spacer insulating layer (32) made of photosensitive glass or the like in which through holes forming the electron beam passages h are sequentially formed from the fluorescent screen (4) side. A high-voltage shield electrode (33) made of a flat plate and a secondary electron multiplying means (8) are arranged via a spacer insulating layer (34).

The secondary electron multiplying means (8) has a plurality of, for example, five, in the illustrated example, two secondary electron multiplying electrode plates (8 ₁ ) similarly having perforated holes forming the electron beam path h. ) (8 ₂ ) are electrically insulated and laminated, for example, via insulating beads (37). A second low-voltage shield electrode in which a through hole for forming a similar electron beam path h is similarly formed on the cathode side of the secondary electron multiplying means (8) via, for example, an insulating bead (37). (35) is arranged. Further, a matrix modulation means (9) is mechanically adhered to the cathode side of the second low-voltage shield electrode (35) while being electrically insulated by an insulating adhesive such as a glass frit.

This matrix modulating means (9) is, for example, shown in FIG.
As shown in C to C, pixels R, R arranged on a line in the common vertical scanning direction on the display unit (fluorescent screen) (4),
Band electrodes X ₁ , X ₂ , X ₃ , which are provided in common to G and B and are arranged in parallel in the X direction so as to extend along the Y direction, respectively.
The horizontal modulation electrode (9 _H ) in the array of ‥ and the common lines in the horizontal scanning direction, for example, the pixels R, G, and B arranged on the X-ray are provided in common in the Y direction so as to extend in the X direction. And vertical modulation electrodes (9 _V ) with an array of parallel-arranged strip electrodes Y ₁ , Y ₂ , Y _{3 3} . And these electrodes X ₁ , X
₂ , X ₃ ‥‥, Y ₁ , Y ₂ , Y ₃メ ッ シ ュ have mesh portions at their intersections which are to be the electron beam paths h, and these horizontal and vertical modulation electrodes (9 _H ) And (9 _V ) are overlapped with each other via a spacer insulating layer (36) in which a hole is formed in a portion to be the electron beam path h.

The first low-voltage shield electrode (30) is electrically connected to an electrode, for example, an electrode (9 _V ), located on the cathode side of the matrix modulation means (9) by an insulating adhesive such as glass frit. It is mechanically attached and arranged while being electrically insulated.

On the back panel (2), a supporting wall-like electrode (10) supported by partition walls (40) made of glass or the like between the cathodes (5) along the arrangement direction of the cathodes (5), that is, the Y direction. Is arranged.

Each of the partition walls (40) is composed of, for example, a pair of partition walls, and is attached and arranged on the back panel (2) by fritting or the like so as to sandwich and support the supporting wall-shaped electrode (10) therebetween.

The supporting wall electrode (10) is disposed between the panel (2) and the flat plate type electron beam control mechanism (7) by pushing up the control mechanism (7) toward the front panel (1). According to 10), the function as a support is maintained so that the two panels (1) and (2) are maintained at a required interval.

A side surface electrode (41) is formed on the surface of the partition (40) by a coating film of, for example, carbon.

Each electrode plate (8 ₁ ) of the secondary electron multiplier (8)
(8 ₂ ) and a material layer such as MgO having a high secondary electron emission ratio δ is applied in each through hole of the high-voltage shield electrode (33).

In this configuration, for example, the first grid electrode (6),
For example, 10 V is applied to the side electrode (41), the supporting wall-shaped electrode (10) and the first low-voltage shield electrode (30), and 100 V is applied to the second low-voltage shield electrode (35). Also, 2
Different voltages sequentially increasing toward the phosphor screen (4) are applied to the respective electrode plates (8 ₁ ) (8 ₂ ) of the secondary electron multiplier (8). For example, the front electrode (8 ₁ ) has a fixed voltage of 350 V, and the rear electrode (8 ₂ ) has a higher voltage than the previous electrode (8 ₁ ).
A fixed voltage of 0V is applied. High voltage shield electrode (33)
And 1 kV is applied to the phosphor screen (4).

And horizontal modulation electrode ( _9H ) and vertical modulation electrode ( _9V )
A voltage of 0 to 60 V is switched and applied to each of the electrodes X ₁ , X ₂ , X ₃ } and Y ₁ , Y ₂ , Y ₃ } with a required horizontal cycle and vertical cycle. ) To phosphor screen (4)
The switching of the electron beam directed to is controlled. At this time the horizontal modulation electrodes (9 _H), is applied a signal which varies in a range of 0~60V according to the display information control of the light emission intensity of each pixel beam modulation is performed is made. Then, in the present invention in this case, for example, in the odd field, as shown in FIG. 1 B, Y ₁ of the two rows adjacent and Y _2, Y
₃ and Y ₄ , Y _5, and Y ₆ }, one display line element L ₁ , L ₃ , L ₅ } is formed.
An image is displayed by a triplet in a combination indicated by a circle, and in the even-numbered field, two rows of Y _2, Y ₃ , Y ₄ and Y in a combination shifted by one row as shown in FIG. 1C.
_An image is displayed by a triplet in a combination surrounded by a chain line b in FIG. C so that each display line element L ₂ , L ₄ , L ₆ } is formed by 5 °.

In this way, the primary electrons extracted from the cathode (5) by the first grid electrode (6) enter the electron beam path h of the electron beam control mechanism (7) and each of the secondary electron multipliers (8). The secondary electrons are sequentially multiplied by the electrodes (8 ₁ ) and (8 ₂ ), and travel to the pixels R, G, and B of the display unit (fluorescent screen) (4). In this case the horizontal and vertical modulation electrodes (9 _H) and (9 _V) electron beams toward the phosphor screen (4) by the switching voltage and the information voltage applied to is modulated phosphor pixels R, G,
The light emission of B is modulated and an optical display, that is, a display is performed.

In the above-described example, the display mode described with reference to FIG. 1 is adopted. In the above-described display device, the display section (fluorescent screen) (4) is shown in FIG. 2 or FIG. As described above, for example, pixels R, G, and B of red, green, and blue are arranged on adjacent three rows and one column, and three adjacent rows in an odd field, that is, the three adjacent electrodes described above.
Y ₁ Y ₂ Y ₃ , Y ₄ Y ₅ Y ₆ ‥‥, each one display line element L ₁ , L ₃ , L ₅
, And three adjacent electrodes Y ₂ Y ₃ Y ₄ , Y ₅ Y in a combination shifted by one row in the even field shown in FIG.
₆ Y ₇ ‥‥ or third three adjacent electrodes of two rows shifted by a combination shown in FIG _{Y 3 Y 4 Y 5, Y} 6 Y 7 Y 8, each one by ‥‥ display line element L ₂ The driving mode of the matrix-shaped electrodes, that is, the matrix modulating means (9) can be adopted so as to form L ₄ L ₆ }.

In the above-described example, the present invention is applied to a secondary electron multiplication type flat display device. However, the present invention can be applied to display devices using various matrix display methods.

Further, the present invention is not limited to a display device having a single tube configuration, and a plurality of R, G, B triplets or a plurality of sets of R, G, B triplets are arranged, and a plurality of light-emitting electron tubes are arranged to perform a matrix display as a whole. The present invention can also be applied to a display device having the above configuration.

〔The invention's effect〕

In the present invention, as described above, the display is performed by using every pixel by a combination shifted by one row or two rows in the arrangement of each pixel between the odd field and the even field, and For example, with the same number of pixel arrangements as in the prior art, the effective number of display lines can be doubled in the example of FIG. 1 and 2.5 times in the examples of FIGS. It is possible to improve the density and therefore the image quality.

[Brief description of the drawings]

1 to 3 are diagrams showing examples of display modes of a matrix type flat display device according to the present invention,
4 and 5 are partially cutaway perspective views of an example of the apparatus of the present invention and cross-sectional views of main parts thereof, and FIGS. 6 to 8 are explanatory views of display modes of the conventional apparatus. (1) is a front panel, (2) is a rear panel, (3) is a vacuum vessel, (4) is a matrix display unit (fluorescent screen),
(5) is a linear cathode, (6) is a (first) grid electrode, (7) is a plate-type electron beam control mechanism, and (8) is 2
The secondary electron multiplying means (9) is a matrix electrode (matrix modulating means).

Continuation of the front page (72) Inventor Susumu Akazawa 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (56) References JP-A-58-80687 (JP, A) JP-A-60-41087 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G09F 9/30 343 G09F 9/35 305 G09G 3/20

Claims (2)

(57) [Claims] In a matrix type display device, a color display unit having a pixel array in which first, second, and third pixels performing different color light displays are arranged on two adjacent rows and three adjacent columns, respectively. With respect to the color display unit, two adjacent pixels
A matrix type display device in which a display drive mode is adopted in which one display line element is formed in rows and two display line elements are formed in three adjacent rows. 2. A matrix type display device, comprising: a color display section having a pixel array in which first, second, and third pixels performing different color light displays are arranged on adjacent three rows and one column. With respect to the color display section, three adjacent pixels
A matrix-type display device having a display driving mode in which one display line element is formed by rows and two display line elements are formed by adjacent four or five rows.