JPH11143382A - Plane type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To narrow the width of a circuit and to reduce a manufacturing cost also. SOLUTION: Rearrangeable wires 70 are formed between IC circuits 63R, 63G, 63B and respective electrodes 69 so that signal lines from terminals SR1 to SR8 on both the sides of the IC circuits 63R are wired on a 2nd layer (solid lines), signal lines from terminals SG1 to SG8 on both the sides of the IC circuit 63G are wired on a 3rd layer (broken lines) and signal lines from terminals SB1I to SB8 on both the sides of the IC circuit 63B are wired on a 4th layer (alternate long and short dash lines). In addition, these wires 70 are connected to signal lines (double lines) of a 1st layer connected to the IC circuits 63R, 63G, 63B and the electrodes 69 by using so-called through type through holes (○).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat display device applied to, for example, a plasma addressed liquid crystal display (PALC).

[0002]

2. Description of the Related Art For example, in a plasma addressed liquid crystal display (PALC), as a means for driving pixels arranged in a matrix in the horizontal and vertical directions, a configuration as shown in FIG. 2 has been conventionally used.

In FIG. 2, for example, a main body 61 of a flat display device made of glass is provided. The main body 61 is provided with, for example, a large number of pixel display elements arranged in a matrix in the horizontal and vertical directions, and these pixel display elements are sequentially driven to display an image.

A driving board for driving the pixels arranged in the horizontal and vertical directions is provided on the main body 61. In FIG. 2, for example, the horizontal drive substrate 62
Only is shown. Further, the driving substrate 62 is provided with a large number of driving means for driving pixels arranged in the horizontal direction of the main body 61, for example. Each of these driving means is, for example, an IC circuit 6 corresponding to three primary colors (R, G, B).
3R, 63G and 63B, and these are repeatedly provided on the drive board 62 in order.

Here, the number of pixels arranged in the horizontal direction of the main body 61 is, for example, 854 × 3 (= R, G, B). On the other hand, each of the IC circuits 63R, 63G, and 63B corresponds to, for example, 32 pieces of pixel data. Accordingly, by providing these IC circuits 63R, 63G, and 63B, for example, 28 for each color, the IC circuits 63R, 63G, and 63B correspond to, for example, 854 pixel data for each color. It should be noted that the excess provided in the entirety of the IC circuits 63R, 63G, 63B of each color is not used.

That is, these IC circuits 63R, 63
G and 63B are provided with data latch means (not shown) for latching, for example, 32 pixel data. Then, for example, the three primary colors (R,
G, B), the pixel data of each of the IC circuits 63R,
63G and 63B.

Further, these IC circuits 63R, 63G,
To 63B, for example, a shift clock of the pixel frequency from the input terminal 65 is commonly supplied, and, for example, arbitrary timing signals from the input terminals 66R, 66G, 66B are sequentially transmitted and supplied for each color circuit. . As a result, pixel data of the three primary colors are sequentially latched by the respective data latch means of the corresponding IC circuits 63R, 63G, and 63B, respectively.

Further, these IC circuits 63R, 63G,
For example, 32 pieces of pixel data latched by the 63B data latch means are respectively extracted via D / A conversion means (not shown). The D / A-converted outputs of, for example, 32 units (not shown) are supplied to the main body 61 of the above-described flat display device via, for example, a flexible cable 67.

In this manner, the above-mentioned input terminal 64R,
An image based on the pixel data of the three primary colors (R, G, B) supplied to 64G and 64B is displayed on the main body 61 of the flat panel display. The main body 61 and the flexible cable 6
7, and the drive board 62 and the flexible cable 67 are connected by, for example, heat compression bonding via an anisotropic conductive film 68.

By the way, in such a structure of the drive board 62, for example, 32 outputs are taken out from the IC circuits 63R, 63G and 63B, for example, and these are output in the same color for each of the IC circuits 63R, 63G and 63B. Signal. On the other hand, in the main body 61 of the flat display device described above, for example, pixels corresponding to a plurality of color signals are arranged in a stripe shape that extends in the vertical direction and repeats in the horizontal direction.

Therefore, in the above-described drive board 62, these signals (outputs) need to be repeated and rearranged, for example, for the three primary colors (R, G, B) in the horizontal direction of the main body 61. That is, as described below, the IC circuit 63
R, 63G, 63B and an electrode 69 for connection to a flexible cable 67 via an anisotropic conductive film 68,
A wiring 70 for performing these rearrangements is provided.

However, such a wiring 70 is connected to, for example, 1
In order to realize a printed wiring board having a plurality of layers, for example, as shown in FIG. 3, a large number of signal lines must be arranged in parallel as the wiring 70, and for example, IC circuits 63R, 63G,
The width W of the circuit from 63B to the electrode 69 becomes large. In the figure, each IC circuit 63R, 63G,
The output of 63B is eight, but the actual number is, for example, 32.

On the other hand, when an actual flat display device is constructed, the above-described drive substrate 62 is provided on a so-called frame portion around a main body 61 serving as a display surface. Therefore, such a frame is required to be as narrow as possible. As described above, the IC circuits 63R, 63G, 6
A circuit having a large width W from 3B to the electrode 69 is not preferable in designing and manufacturing the device.

In the configuration of FIG. 3, the three primary colors (R,
Many so-called jump lines are used to rearrange the order of G and B), and the use of such jump lines is also undesirable in the design and manufacture of the device. On the other hand, it has been considered that the above-mentioned jump line is eliminated by allocating the wiring 70 to each layer using a multilayer substrate.

In the following description, the wiring of the first layer (surface) provided on the multilayer substrate is indicated by a double line, the wiring of the second layer is indicated by a solid line, and the wiring of the third layer is indicated by a broken line. The wiring of the fourth layer is indicated by a chain line. However, the solid line of the second layer may overlap with the broken line of the third layer and the dashed line of the fourth layer.

However, even if such a multi-layer substrate is used, for example, when the wiring 70 is distributed using the second to fourth layers of the multi-layer substrate, as shown in FIG.
Signal lines from the left and right terminals of the circuits 63R, 63G, 63B are sequentially arranged in a second layer (solid line), a third layer (dashed line),
If the signal is repeatedly assigned to the fourth layer (dashed line), the signal lines of the third layer (broken line) intersect between the positions indicated by (△) in the figure.

Therefore, any signal line must be moved from the third layer (broken line) to another layer between the positions indicated by (△), and for that purpose, In order not to cut other wiring, a connection must be made by providing a non-penetrating through hole. However, such a non-through-type through hole is generally more difficult to form than a so-called through-type through-hole, and increases the manufacturing cost.

Alternatively, as shown in FIG. 5, a part of the signal line formed in the third layer (broken line) of the wiring 70 is
It is also conceivable that the connection is made by routing to the opposite side of the circuit 9, but in this case, the width Wb of the circuit corresponding to the routing is added to the width Wa of the original circuit, and the width W of the circuit is increased. This is contrary to the purpose of making the width W of the circuit as narrow as possible.

[0019]

SUMMARY OF THE INVENTION The present invention has been made in view of such a point, and the problem to be solved is that the width W of the circuit is increased in the conventional device, and A so-called jump line or a non-penetrating type through hole is used, which is not preferable in designing and manufacturing the device.

[0020]

For this reason, in the present invention, the signal lines from the driving means are wired using different layers of a multilayer substrate, and the connection is made using through-holes. According to this, the width W of the circuit can be reduced, and the manufacturing cost can be reduced.

[0021]

DETAILED DESCRIPTION OF THE INVENTION That is, the present invention relates to a flat display device for displaying an image using pixels arranged in a matrix in the horizontal and vertical directions, wherein pixels corresponding to a plurality of color signals are horizontally and / or horizontally. In a case where driving means for sequentially providing pixels in the vertical direction and for sequentially driving pixels in the horizontal and / or vertical directions are provided independently for each color signal, a signal line from the driving means is connected to each of the multilayer substrates. Wiring is performed using different layers, and connection between the wiring and the driving means and / or pixels is performed using through-type through holes.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.
FIG. 1 is a configuration diagram of an example of a main part of a flat display device to which the present invention is applied. In the following description, portions corresponding to the above-described conventional technology are denoted by the same reference numerals, and redundant description will be omitted.

In FIG. 1, IC circuits 63R, 63G,
The rearrangement wiring 70 provided between the electrode 63B and the electrode 69 is provided, for example, by connecting signal lines from the terminals SR1 to SR8 on both sides of the IC circuit 63R to the second layer (solid line). The signal lines from the terminals SG1 to SG8 on both sides of the IC circuit 63B are arranged on the third layer (broken line), and the signal lines SB1 to SB8 from the terminals on both sides of the IC circuit 63B are arranged on the fourth layer (dashed line).

Further, the wiring 70 and the IC circuit 63
The connection between the R, 63G, 63B and the signal line (double line) of the first layer to which the electrode 69 is connected is made using a so-called through-type through hole (貫通).

Thus, in this device, the order of the three primary colors (R, G, B) can be rearranged without using a non-penetrating type through hole which is expensive to manufacture, and the width W of the circuit is also the original width. Wa can be left as it is.

Therefore, in this device, the signal lines from the driving means are wired using different layers of the multilayer substrate,
By making connection using a through-type through hole, the width W of the circuit can be reduced and the manufacturing cost can be reduced.

Thus, in the conventional device, the circuit width W
According to the present invention, it is possible to easily solve these problems which are not preferable in the design and manufacture of the device because a so-called jump line or a non-penetrating type through hole is used. You can do it.

In the above-described device, the IC circuit 63
The signal lines from R, 63G, and 63B may be allocated to any of the above-described second layer (solid line), third layer (dashed line), and fourth layer (dashed line). When a multi-layer substrate is used, the signals may be distributed to any of the layers, and in any case, the signal lines for each color signal only need to be wired using different layers of the multi-layer substrate. It is.

The electrode 69 is not limited to the electrode for connecting to the flexible cable 67 via the anisotropic conductive film 68 as described above, for example, the main body 6 of the flat display device.
It may be one display pixel electrode itself. In this case, the display pixel electrode is one in which pixels corresponding to, for example, a plurality of color signals are arranged in a stripe shape that extends in the vertical direction and is repeated in the horizontal direction.

Thus, according to the above-mentioned flat display device,
In an apparatus that displays an image using pixels arranged in a matrix in the horizontal and vertical directions, pixels corresponding to a plurality of color signals are sequentially provided in the horizontal and / or vertical directions, and the pixels are horizontally and / or vertically. In the case where driving means for sequentially driving in the vertical direction is provided independently for each color signal, signal lines from the driving means are wired using different layers of the multilayer substrate, and the wiring and the driving means and / or The connection with the pixel is made by using a through-type through hole, whereby the width W of the circuit can be reduced and the manufacturing cost can be reduced.

[0031]

Therefore, according to the first aspect of the present invention, the signal lines from the driving means are wired using different layers of the multilayer substrate, and the connection is made using the through-type through-holes. The width W can be reduced, and the manufacturing cost can be reduced.

Thus, in the conventional device, the circuit width W
According to the present invention, it is possible to easily solve these problems which are not preferable in the design and manufacture of the device because a so-called jump line or a non-penetrating type through hole is used. You can do it.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an example of a main part of a flat panel display device to which the present invention is applied.

FIG. 2 is an overall configuration diagram of the flat panel display device.

FIG. 3 is a configuration diagram of a main part for describing a conventional apparatus.

FIG. 4 is a configuration diagram of a main part for describing a conventional apparatus.

FIG. 5 is a configuration diagram of a main part for describing a conventional apparatus.

[Explanation of symbols]

63R, 63G, 63B: IC circuits as driving means corresponding to the three primary colors (R, G, B); 69, electrodes for connection to flexible cables; 70, wiring for rearranging signals; Signal line of first layer, solid line: signal line of second layer, broken line: signal line of third layer, dashed line: signal line of fourth layer, o: through-type through hole

[Procedure amendment]

[Submission date] December 16, 1997

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

FIG. 3

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Change

[Correction contents]

FIG. 4

[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

Claims (3)

[Claims] 1. A flat display device for displaying an image using pixels arranged in a matrix in the horizontal and vertical directions, wherein pixels corresponding to a plurality of color signals are sequentially provided in the horizontal and / or vertical directions. In addition, when driving means for sequentially driving the pixels in the horizontal and / or vertical directions is provided independently for each of the color signals, the signal lines from the driving means use different layers of a multilayer substrate. A flat panel display device, wherein the wiring is connected to the driving means and / or the pixel using a through-type through hole. 2. The flat panel display according to claim 1, wherein the plurality of color signals are red, green, and blue color signals, and a signal line from the driving unit is connected to three different layers of the multilayer substrate. A flat-panel display device, wherein wiring is performed by using. 3. The flat-panel display according to claim 1, wherein the pixels corresponding to the plurality of color signals are arranged in stripes extending in the vertical direction and repeating in the horizontal direction. apparatus.