JPH0139626B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flat panel image display device, and particularly to improvements in its light emitting means.

An object of the present invention is to provide a range of electron beams deflected by respective deflection electrodes provided corresponding to respective linear electron sources in a flat panel image display device.
The non-uniformity of the image due to the irregularity of the seams between the deflected ranges adjacent to each other is solved by configuring the light emitting means by arranging a non-luminous substance at the position of the seams between the deflected ranges, The goal is to obtain a uniform image.

Another object of the present invention is to subdivide the deflected range by arranging a non-luminescent substance at a joint position between the deflected ranges and at a position dividing the joint position into a plurality of parts. The aim is to make it easier to see as a uniform image that is recognized as a more precise regular pattern without having to be aware of the seams.

An example of a basic configuration of an image display element proposed by the present inventors will be described with reference to FIG.

This display element is arranged in order from the back to the front.
A back electrode 1, a line cathode 2 as a beam source (linear electron source), vertical focusing electrodes 3, 3' as an electron beam extraction means, a vertical deflection electrode 4, a beam flow control electrode 5 as an electron beam control means, and a horizontal It consists of a focusing electrode 6, a horizontal deflection electrode 7, a beam accelerating electrode 8, and a screen plate 9 as a light emitting means, which are housed in a vacuum inside a flat glass bulb (not shown). ing.

A line cathode 2 serving as a beam source is stretched horizontally so as to generate an electron beam distributed linearly in the horizontal direction, and a plurality of line cathodes 2 (here, 2-2-4
(Only books shown) provided. In this embodiment, it is assumed that 15 pieces are provided. 2i~2ta. These line cathodes 2 have a diameter of, for example, 10 to 20μφ.
An oxide cathode material is coated on the surface of a tungsten wire. Then, as will be described later, the electron beams are controlled to be emitted sequentially from the upper line cathode 2a for a fixed period of time. (The back electrode 1 suppresses the generation of electron beams from other line cathodes 2 other than the line cathode 2 that is controlled to emit electron beams for a certain period of time, and directs the generated electron beams only in the forward direction. )
The back electrode 1 may be formed by a coating film of a conductive material adhered to the inner surface of the back wall of the glass pulp. Further, instead of the back electrode 1 and the linear cathode 2, a planar electron beam emitting cathode may be used.

The vertical focusing electrode 3 is a conductive plate 11 having a horizontally long slit 10 facing each of the line cathodes 2a to 2ta, and takes out the electron beam emitted from the line cathode 2 through the slit 10 and directs the electron beam vertically. focus in a direction. (The slit 10 may be provided with crosspieces at appropriate intervals in the middle, or may be a row of many through holes arranged horizontally at small intervals (almost touching), and can be used as a slit. (may be configured). The vertical focusing electrode 3' is also similar.

A plurality of vertical deflection electrodes 4 are arranged horizontally in the middle of each of the slits 10, and are each composed of conductors 13 and 13' provided on the upper and lower surfaces of an insulating substrate 12. has been done. And the opposing conductors 13, 13'
A vertical deflection voltage is applied between them to deflect the electron beam in the vertical direction. In this embodiment, the electron beam from one line cathode 2 is vertically deflected to positions corresponding to 16 lines by a pair of conductors 13, 13'. And, by 16 vertical deflection electrodes 4, 15
Fifteen conductor pairs corresponding to each of the book line cathodes 2 are constructed, and the electron beam is ultimately deflected to draw 240 horizontal lines on the screen 9.

Next, the control electrodes 5 are composed of conductive plates 15 each having a vertically long slit 14, and a plurality of control electrodes 15 are arranged in parallel in the horizontal direction at predetermined intervals. In this embodiment, 320 conductive plates 15a to 15n for control electrodes are provided (only 10 are shown in the figure). (Each of the control electrodes 5 extracts the electron beam horizontally by dividing it into one picture element at a time, and controls the amount of the electron beam passing therethrough in accordance with the video signal for displaying each picture element.)
Therefore, if 320 control electrodes 5 are provided, 320 picture elements can be displayed per horizontal line. Also,
In order to display images in color, each picture element is R,
Display is performed using phosphors of three colors, G and B, and the R, G, and B video signals are sequentially applied to each control electrode 5. In addition, 320 sets of video signals for one line are simultaneously applied to the 320 control electrodes 5.
Video for each line is displayed at once.

The horizontal focusing electrode 6 is composed of a conductive plate 17 having a plurality of 320 vertically long slits 16 facing the slits 14 of the control electrode 5, and focuses the electron beam for each pixel divided in the horizontal direction. Each is focused horizontally into a narrow electron beam.

The horizontal deflection electrode 7 is composed of a plurality of conductive plates 18 arranged vertically in the middle of each of the slits 16, and a horizontal deflection voltage is applied between each conductive plate 18 for each picture element. The electron beams are respectively deflected in the horizontal direction, and the R, G, and B phosphors are sequentially irradiated on the screen 9 to cause them to emit light. In this embodiment, the deflection range is the width of one picture element for each electron beam.

The accelerating electrode 8 is composed of a plurality of conductive plates 19 provided horizontally at the same position as the vertical deflection electrode 4, and accelerates the electron beam so that it collides with the screen 9 with sufficient energy.

The screen 9 is constructed by coating the back surface of a glass plate 21 with a phosphor 20 that emits light when irradiated with an electron beam, and adding a metal back layer (not shown). The phosphor 20 is arranged for each slit 14 of the control electrode 5, that is, for each horizontally divided electron beam.
Pairs of phosphors in each of the three colors R, G, and B are provided, and are applied in stripes in the vertical direction. In FIG. 1, the broken lines drawn on the screen 9 indicate divisions in the vertical direction that are displayed corresponding to each of the plurality of line cathodes 2, and the two-dot chain lines correspond to each of the plurality of control electrodes 5. Indicates the horizontal division displayed. As shown in the enlarged view in Figure 2, one section partitioned by these two has R, G, and B phosphors 20 for one pixel in the horizontal direction, and 16 lines in the vertical direction. It has a width.
For example, the size of one section is 1 in the horizontal direction.
mm, vertically 16 mm.

Note that in FIG. 1, the length in the horizontal direction is greatly enlarged relative to the length in the vertical direction for clarity.

Further, in this embodiment, only one pair of R, G, and B phosphors 20 for one picture element is provided for one control electrode 5, that is, one electron beam, but two
Of course, two or more pairs for more than two picture elements may be provided, and in that case, R, G, and B video signals for two or more picture elements are sequentially applied to the control electrode 5.
Horizontal deflection is performed in synchronization with this.

Next, the basic configuration of a drive circuit for displaying television images on this display element will be explained with reference to FIG. First, a driving portion for irradiating the screen 9 with an electron beam to emit raster light will be described.

The power supply circuit 22 is a circuit for applying a predetermined bias voltage (operating voltage) to each electrode of the display element,
−V ₁ to the back electrode 1, and −V 1 to the vertical focusing electrodes 3, 3.
DC voltages of V ₃ , V ₃ ', V ₆ to the horizontal focusing electrode 6, V ₈ to the accelerating electrode 8, and V ₉ to the screen 9 are applied.

Next, a composite video signal of a television signal is applied to the input terminal 23, and a synchronization separation circuit 24 separates and extracts a vertical synchronization signal V and a horizontal synchronization signal H. The vertical drive pulse generation circuit 25 is composed of a counter that is reset by a vertical pulse and counts horizontal pulses, and is configured to operate during an effective vertical scanning period (here, 240 hours) excluding the vertical retrace period of the vertical period. 15 drive pulses, each having a length of 16H period, are generated sequentially during the following period. This drive pulse rotor is applied to the line cathode drive circuit 26, where it is inverted so that it is brought to a low potential only during each pulse period and approximately 20
A line cathode drive pulse I′ made at a high potential of volts,
It is converted into B′...T′, and each line cathode 2a, 2b,...
...Added to 2 ta. Each line cathode 2a...2ta is heated by a current flowing through it during the high potential of the drive pulses I' to T', so that it can emit electrons even during the low potential period of the drive pulses I' to T'. The heated state is maintained. As a result, electrons are emitted from the 15 line cathodes 2i to 2ta only during the 16H period in which low potential drive pulses i' to ta' are applied to each of them.
(During the period when a high potential is applied, the back electrode 1
Since the high potential applied to the linear cathodes 2a to 2ta is more positive than the potential at the position of the linear cathode 2 determined by the bias voltage applied to the vertical focusing electrode 3, Electrons are not emitted from the line cathodes 2a to 2a. Thus, in the line cathode 2, during the effective vertical scanning period, 16H
Electrons are emitted for each period. The emitted electrons are pushed forward by the back electrode 1, pass through the opposing slits 10 of the vertical focusing electrode 3, and are focused in the vertical direction to form a flat electron beam.

Next, the vertical deflection drive circuit 27 is composed of a counter that is reset by each of the vertical drive pulse generators and counts horizontal synchronizing signals, a conversion circuit that converts the count output from D/A, and the like. , generates a pair of vertical deflection signals v and v' that change in 16 steps by 1H during the 16H period of each vertical drive pulse. The vertical deflection signals v and v′ both have a center voltage of V ₄ , and v increases sequentially,
v′ is configured to change in opposite directions so as to decrease sequentially. These vertical deflection signals v and v' are applied to electrodes 13 and 1 of the vertical deflection electrode 4, respectively.
3', so that each line cathode 2
The electron beam generated from A~2 is directed vertically.
It is deflected in 16 steps, and as mentioned earlier, on the screen 9, one electron beam is deflected so that a raster of 16 lines is sequentially drawn one line at a time from the top.

As a result of the above, electron beams are emitted from the top of the 15 line cathodes 2A to 2T for a period of 16 hours, and each electron beam is sequentially emitted for one line from the top to the bottom within the 15 sections in the vertical direction. By being deflected one by one, the electron beam is vertically deflected one line at a time on the screen 9 from the first line at the top end to the 240th line at the bottom end, and a total of 240 lines of raster are drawn.

The electron beam thus vertically deflected is horizontally deflected by 320 degrees by the control electrode 5 and the horizontal focusing electrode 6.
It is divided into sections and taken out. Figure 1 shows one of these categories. The amount of electron beam passing through each section is controlled by a control electrode 5, and horizontally focused by a horizontal focusing electrode 6 into a single narrow electron beam, which is then controlled by horizontal deflection means described below. The R, G, and B phosphors 2 on the screen 9 are deflected horizontally in three stages.
0 is sequentially irradiated.

That is, the horizontal drive pulse generation circuit 28 is composed of three cascade-connected monostable multivibrators, etc., and is triggered by a horizontal synchronization signal to generate three horizontal drives with equal pulse widths within one horizontal period. Generate pulses r, g, b. Here, as an example, each pulse width is approximately 17 μsec.
3 during the effective horizontal scanning period of 50μsec.
Three pulses r, g, and b are generated. These horizontal drive pulses r, g, and b are applied to the horizontal deflection drive circuit 29. The horizontal deflection drive circuit 29 generates a pair of horizontal deflection signals h and h' that change in three stages by being switched by the horizontal drive pulses r, g, and b. Both horizontal deflection signals h and h' have a center voltage of V ₇ , and h increases sequentially,
h' change in opposite directions so that they decrease sequentially. These horizontal deflection signals h, h' are applied to electrodes 18 and 18' of the horizontal deflection electrode 7, respectively.
As a result, each horizontally divided electron beam is horizontally deflected so as to sequentially irradiate the R, G, and B phosphors of the screen 9 for 17 μsec during each horizontal period. However, in the display element of FIG. 1, one conductor 18 or 18' is used in the horizontal deflection electrode 7.
is used to deflect the electron beams of two adjacent sections, and is designed to produce a deflection effect on the adjacent electron beams in mutually opposite directions. Therefore, the electron beam of 320 sections is If the thing in the th category is deflected in the order of R→G→B, the thing in the even numbered category is deflected in the order of B→G→R.
It is deflected in the opposite direction every other section, such that it is deflected in the order of .

Thus, in each line raster, the electron beam is divided into R, G,
Each of the B phosphors 20 is sequentially irradiated with light.

Therefore, a color television image can be displayed on the screen 9 by modulating the electron beam with R, G, and B video signals for each horizontal section of each line.

Next, the modulation control portion of the electron beam will be explained.

First, the composite video signal applied to the television signal input terminal 23 is applied to the color demodulation circuit 30,
Here, the color difference signals of R-Y and B-Y are demodulated,
The G-Y color difference signals are matrix-synthesized, and further, they are combined with the luminance signal Y to generate R, G,
B primary color signals (hereinafter referred to as R, G, and B video signals) are output. These R, G, and B video signals are processed by 320 sample and hold circuit sets 31a to 3.
Added to 1n. Each sample hold circuit group 3
1a to 31n each have three sample and hold circuits for R, G, and B. The sample and hold outputs of these sample and hold circuit sets 31a to 31n are held by memory sets 32a to 32n, respectively.
32n.

On the other hand, the sampling reference clock oscillator 33
is composed of a PLL (phase locked loop) circuit, etc., and generates a reference clock of about 6.4 MHz in this embodiment. The reference clock is controlled to always have a constant phase with respect to the horizontal synchronizing signal H. This reference clock is applied to the sampling pulse generation circuit 34, where it is delayed by one clock cycle by a shift register, etc., so that the reference clock is applied to the sampling pulse generating circuit 34, where it is delayed by one clock cycle at a time, so that the reference clock is Sampling pulses a to n are sequentially generated, and then one transfer pulse is generated. These sampling pulses a to n correspond to each picture element when one line of the video to be displayed is divided into 320 picture elements in the horizontal direction, and their positions are always constant with respect to the horizontal synchronizing signal H. controlled by.

These 320 sampling pulses a to n correspond to the above 320 sample and hold circuit sets 31.
a to 31n, thereby providing one line to each sample and hold circuit set 31a to 31n.
When divided into 320 picture elements, the R, G, and B video signals of each picture element are individually sampled and held. The 320 sample-held R, G, and B video signals are transferred to the memory 32a after the sample-hold for one line is completed.
~32n, are transferred all at once by a transfer pulse t, and held here for the next one horizontal period.

One line of R, G, and B video signals held in the memories 32a to 32n are applied to 320 switching circuits 35a to 35n, respectively. The switching circuits 35a to 32n each have R, G,
B individual input terminals and a common output terminal that sequentially switches and outputs them, and the output of each switching circuit 35a to 35n is sent to the control electrode 5 of the display element as a control signal for modulating the electron beam.
320 conductive plates 15a to 15n, respectively. Each switching circuit 35a to 35
n are simultaneously switched and controlled by a switching pulse applied from a switching pulse circuit 36. The switching pulse generation circuit 36 receives pulses r, g,
The switching circuits 35a to 35n are controlled by dividing approximately 50 μsec at the center of each horizontal period into three and switching circuits 35a to 35n for approximately 17 μsec each, and the R, G, and B video signals are time-divided and alternately transmitted. Switching signals r, g, and b are generated so as to be sequentially output and supplied to the control electrodes 15a to 15n. However, among the switching circuits 35a to 35n, the odd-numbered switching circuits 35a, 35c, . . . are switched in the order of R→G→B, and the even-numbered switching circuits 35
b, 35d...35n are configured to be switched in the reverse order of B→G→R.

What should be noted here is that the switching circuit 3
The switching of the supply of R, G, and B video signals in 5a to 35n and the horizontal deflection of the electron beam irradiation to the R, G, and B phosphors by the horizontal deflection drive circuit 29 are performed perfectly in both timing and order. It is synchronously controlled to match. As a result, when the electron beam is irradiating the R phosphor, the irradiation amount of the electron beam is controlled by the R video signal, and G and B are similarly controlled, so that the R, G, and B of each picture element are controlled in the same manner. The light emission of each B phosphor is controlled by the R, G, and B video signals of that picture element, and each picture element is displayed by emitting light according to the input video signal. Such control is performed simultaneously on 320 picture elements for one line to display one line of video, and then sequentially performed on 240 lines starting from the upper line to display one video on screen 9. will be done.

The above operations are repeated for each field of the input television signal, and as a result,
The screen 9 is similar to a normal television receiver.
The television footage of the video is shown above.

The flat panel image display device described in detail above is
Unlike ordinary television receivers, which have an electron gun housed in a large cathode ray tube, this has the advantage of being able to be made into a flat panel with an extremely small depth.

However, as shown in FIG. 1, this device displays the entire area of the screen plate by having the line cathodes 2A to 2D share and display each area on the screen plate 9, so each line There was a drawback that the boundaries where the cathodes 2a to 2d perform display appeared as non-uniform curves, resulting in deterioration of the screen.

That is, as shown in FIG.
It is necessary to align the electrodes 7 and 8 with each other and store them in a narrow container, and it is extremely difficult to assemble these electrodes and wire cathodes without shifting their relative positions. do. For example, in a device using a screen plate of 150 mm x 200 mm in size, misalignment occurs between the screen plates, so the boundaries where each line cathode 2A to 2D perform display appear as uneven curves, and the screen deteriorates. Put it away.

FIG. 4a shows the electron beam spot on the screen plate of a conventional flat panel image display device. Here, an electron beam spot 40 is placed on the phosphor stripes (R, G, B) arranged on the screen plate 9, for example, the first display section is
16 dots, the second display section is 16 dots, and each section is horizontally and vertically deflected to display 16 dots.
A dot will be displayed, and a total of 240 x 320 electron beam spots will be displayed. As shown in FIG. 4b (FIG. 4b is an enlarged view of section A in FIG. 4a), the electron beam spot pitch is mainly caused by the positional deviation between the electrodes as described above. Occurs between partitions. That is, as shown in Fig. 4b, P-P' and Q-Q', which connect the centers of the electron beam spots at the boundary between the first and second sections, are clearly not parallel, and at the boundary between these sections,
Disturbances occur in the vertical spot pitch. The location where this occurs is the seam (boundary) between each display section, and when viewed as a whole image,
Extremely bright or dark lines appear fixedly inserted between each segment, resulting in an uneven and difficult to see image.

The present invention eliminates the above-mentioned conventional drawbacks by using a light-emitting means constructed by applying a non-luminescent substance between adjacent regions where electron beams are deflected (i.e., adjacent sections). This is an attempt to eliminate image deterioration. Further, by dividing the area between the positions where the non-luminescent substance is applied into a plurality of parts by applying the non-luminescent substance, a more uniform image can be easily seen.

The flat panel image display device of the present invention includes a plurality of linear electron sources, an electron beam extraction means for extracting electron beams from the linear electron sources, and an electron beam control means for controlling the electron beams. an electron beam deflecting means for deflecting an electron beam formed parallel to each electron source of the plurality of linear electron sources; and a light emitting means for emitting light upon impact of the electron beam; The light emitting means deflects an electron beam by an arbitrary pair of deflection electrodes of the deflection means, and the range on the surface of the light emitting means to which the electron beam is deflected and the pair of deflection electrodes adjacent thereto are similar to those described above. A non-luminescent substance is disposed on the light emitting means surface between the range on the deflection means surface that is deflected by the light emitting means. Furthermore, another objective configuration is configured by further dividing the arrangement of each of the non-luminescent substances into a plurality of pieces, and arranging the non-luminescent substances.

An embodiment of the light emitting surface of the screen plate in the flat panel image display device of the present invention is shown in FIG. In the figure, if the electron beam spot pitch in the vertical direction is t, the electron beam spot pitch is t at any position in the horizontal direction within one display section, but at the boundary between adjacent display sections, the electron beam spot pitch is in the horizontal direction. Depending on the position of (t-Δt), t, (t
+Δt), etc. Therefore, the difference in spot pitch in the vertical direction at several spots or tens of spots apart in the horizontal direction is (t + Δt)
-(t-Δt)=2Δt, resulting in extremely non-uniform image display. To prevent this, as shown in FIG. 5, a non-luminescent material 42 is coated and arranged to have a constant width between the boundaries P ₁ -P ₁ ' and Q ₁ -Q ₁ ' of the display sections.
As a result, as shown in the figure, the pitch between the electron beam spots 41A and 41B was (t-Δt), but because the non-luminescent material 42 (shaded area) is provided, the center of the spot 41B is now ΔS compared to the previous position.
The pitch is recognized as (t-Δt+ΔS) due to the downward shift. Furthermore, the brightness of spot 41B also decreases by about 1/2, and the pitch between spots 41A and 42B appears to be closer to t than (t-Δt+ΔS). For that, (t+Δt)
The difference between and (t-Δt+ΔS) has a value close to Δt, and therefore, when an image is displayed, there is no unevenness between display sections, resulting in an extremely uniform image.

As explained above, in the apparatus of the present invention, a display section is formed by deflecting an electron beam by each pair of deflection electrodes, and a display section is formed by deflecting an electron beam by an adjacent deflection electrode. Disturbances in the electron beam spot pitch between the images appear to the eye as if the pitch has been corrected by applying a non-luminescent material, which has the effect of making it easier to see as a uniform image. Further, by further dividing the space between the non-luminescent substances into a plurality of pieces and arranging the non-luminescent substances, there is an effect that a regular pattern density is increased and a more uniform image becomes easier to see.

A more specific embodiment of the display surface of the screen plate in the flat panel image display device of the present invention is shown in FIGS. 6a and 6b. Note that FIG. 6a is an enlarged view of section A in FIG. 6b. The structure of the screen board other than the display surface is the same as that in FIG. 1. The size of the panel here is 150mm x 200mm (equivalent to 10 inches). In this case, the electron beam spot diameter l ₁ is approximately 300 μ. As the non-luminescent material 42, aquadac is generally used. This is done in the same way as the black matrix method used when coating phosphor on CRTs.
Horizontal lines P ₂ -P ₂ ′, Q ₂ -Q ₂ ′, R ₂ -R ₂ ′, X-Y are applied and arranged. Horizontal line P ₂ −P ₂ ′, Q ₂ −Q ₂ ′,
R ₂ −R ₂ ′ is the horizontal line P ₁ −P ₁ ′, Q ₁ shown in FIG.
_-Q1 ' has the function of compensating for disturbances in beam spot pitch between adjacent sections, and the horizontal line It has a compensation function. The width of this non-luminescent material 42 is approximately 200μ. The width of one display section, which corresponds to the range in which the electron beam is deflected by the pair of deflection electrodes, is 10 mm. This display section will be scanned with 16 scanning lines.
Oh, the disturbance in the electron beam spot pitch mainly caused by assembly errors is approximately Δt when expressed by the above-mentioned Δt.
= around 50 to 150μ. Furthermore, when an image is displayed on a television receiver without interlacing, the electron beam spot pitch t is approximately 625μ. Here, if the non-luminescent material 42 is not applied and disposed, the maximum disturbance of the spot pitch will be approximately 2Δt≈300μ. For example, in part A of FIG. 6b, the pitch of the electron beam spot is l ₃ (325μ), but by applying and arranging the non-luminescent material 42 with a width of about 200μ, the pitch of the electron beam spot is changed to l ₄ (413μ). In addition, the area of the electron beam spot is reduced by the non-luminescent material 42 and the brightness is lowered, which has the effect of making the image more uniform and easier to see.

As explained above, the flat panel image display device of the present invention can eliminate non-uniformity of boundaries between display sections, and can provide clear and easy-to-see images.

[Brief explanation of drawings]

Figure 1 is a diagram showing the configuration of a flat panel image display device already proposed by the present inventors, Figure 2 is an enlarged view of the main part of the screen plate of the same device, and Figure 3 is a diagram showing the configuration of the drive circuit of the device. Figures 4a and 4b are enlarged views of main parts showing the state of the electron beam spot on the screen plate of a conventional flat panel image display device, and FIG. 5 is an enlarged view of the electron beam spot in the flat panel image display device of the present invention. FIGS. 6a and 6b are enlarged views of essential parts showing the state of the electron beam spot in the flat panel image display device of the present invention. 1... Back electrode, 2... Line cathode, 3, 3'...
Vertical focusing electrode, 4...Vertical deflection electrode, 5...Beam flow control electrode, 6...Horizontal focusing electrode, 7...Horizontal deflection electrode, 8...Beam acceleration electrode, 9...Screen plate, 40...Electron Beam spot, 42...
Non-luminescent substance.

Claims (1)

[Scope of Claims] 1. A plurality of linear electron sources, an electron beam control means for controlling the electron beam, and electrons formed in parallel corresponding to each electron source of the plurality of linear electron sources. An electron beam deflecting means for deflecting the beam, and a light emitting means for emitting light upon impact of the electron beam, wherein the electron beam is deflected by an arbitrary pair of deflection electrodes of the deflection means, and the deflected electron beam is A region on the surface of the light-emitting means on which the electron beam strikes, and another region on the surface of the light-emitting means on which the deflected electron beam strikes, which is deflected by the pair of deflection electrodes adjacent to the pair of deflection electrodes. A flat panel image display device characterized in that a non-luminescent substance is disposed on the surface of the light emitting means between the region and the region. 2. The flat panel image display device according to claim 1, wherein another non-luminescent substance is arranged between the non-luminescent substances and in parallel with the non-luminescent substance.