JPS63213884A - Mounting of driver for matrix type display device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] The present invention is a flat display in which a flexible Pt board is used to divide and connect a plurality of parallel driver groups in order to reduce the mounting area of a driver IC.

[Industrial application field]

The present invention relates to a method for implementing a data driver for a matrix display device.

[Conventional technology]

Advances in active matrix display devices have been remarkable, and display devices for televisions and OA equipment are being realized using them, and along with this, there has been a long-awaited desire for larger capacity display panels. As the capacity of display panels increases, the number of driving ICs such as data drivers used increases, and the volume required to mount these and accommodate the Pt boards for wiring also increases, and the display panels themselves are thin. Nevertheless, problems arise, such as the device becoming thicker. Therefore, there is a need for a mounting method that does not take up space even when the display capacity increases.

An implementation diagram of a data driver for a conventional matrix display panel is shown in FIGS. 4(a) and 4(bl).

The same figure (al shows an implementation method when the normal display capacity is not large; an example in which a large number of data drivers 2 are divided into two groups, A and B, and data vA3 is drawn out alternately in the vertical direction of the display panel 1. It is.

On the other hand, in the same figure (b), in order to prevent the clock for sampling the display data to the data driver 2 from exceeding the operating frequency of the data driver 2 when the display capacity is large, a large number of data drivers 2 are used. An example is shown in which the display panel 1 is divided and arranged into four groups (a to d in the figure), two lines each on the upper and lower sides.

In this example, the input data is time-divided into four parts, so the data line 3 is connected to four data driver groups a to d in a fixed order.
It is divided into and connected.

In this mounting method, it is necessary to use both the front and back sides of the mounting board, and the data line 3 led out from the display panel 1 is connected to the wiring 3' (wire indicated by the broken line in the figure) arranged on the back side through a through hole. ), the wiring pattern becomes complicated, the design of the board requires careful attention, and the manufacturing process is not easy.

[Problem that the invention seeks to solve]

As the display capacity becomes larger as mentioned above, and when the data drivers are divided into many groups as shown in the above-mentioned No. 4 Doshi, and both sides of the mounting board are used, not only will the board pattern become complicated, There was a problem in that the area of the through hole and the wiring routing portion became large, and the overall volume became very large.

An object of the present invention is to provide a driver mounting method for a matrix type display device that can reduce the space required for mounting a data driver.

[Means for solving problems]

FIG. 1 shows the main structure of the present invention.

As shown in the figure, in the present invention, when the number of data lines is large and the clock for sampling display data exceeds the operating frequency of the data driver 2, multiple groups of data drivers 2 are used as in the conventional case. (In the figure, a - d
(4 groups).

In the present invention, the data drivers 2 divided into four groups are arranged on separate PT substrates A to D, respectively, and data from the display panel 1 is displayed. 3 on PT substrates A and B in order from the end.
, C, and D periodically. In the example in the same figure, 0
Terminals for connecting the wirings 4 of the PT boards A and B are provided on the Pt board (hereinafter referred to as PT board C, PTL board, etc.) on which the data drivers of group and d group are mounted. , connect this terminal to the terminal of the wiring 4 derived from the data driver 2 mounted on the Pt substrates A and B by crimping method or the like, and connect A to the PT substrate C and B to the PT substrate. Connecting.

Note that it is also possible to use a flexible PT substrate as each of the above PT substrates.

[For production]

As described above, by dividing each data driver group a % d into separate PT substrates A-D, each Pt
Since the number of wires on the substrates A to D is reduced, there is no need for a wire routing section, and through holes and intersections of wires can be eliminated, making it possible to reduce the overall volume.

〔Example〕

FIGS. 2(a) and 2(b) are diagrams showing an example of implementation of the present invention.

FIG. 1(a) is a diagram showing the configuration of the PT5 boards C and D directly connected to the display panel 1 in FIG. This is a terminal for bonding to a terminal similarly provided at the end of the data line 3 on the display panel 1 by crimping or the like. 6 is a terminal for bonding the PT substrate A or B mentioned above. Although not shown, the PL boards A and B have terminals to be bonded to the terminals 6, and wiring is provided to connect these terminals to the data driver.

Next, a method of integrating the PT substrates A to D and the display panel 1 configured in this way will be explained with reference to the same figure (bl).

As shown in the figure, the display panel 1 and the Pt substrates C and D are bonded together by bonding the terminals provided on the display panel 1 and the terminals 5 provided on the length D of the PT substrate using a pressure bonding method or the like. By this, it is integrated.

Next, the terminals 6 and PT5 provided on the PT substrate length D
By gluing the terminals provided on plates A and B,
Mount A on PTT board C and B on PTT board D.

In this way, the data line 3 of the display panel 1 is connected to the PT substrates A, B, C, and D in order from the end, and then again to A,
It is divided and derived into B, C, and D at a constant periodicity. This division method is the same as the conventional method, and it increases the display capacity and prevents the sampling clock from exceeding the operating frequency of the data driver 2, and also prevents the wiring from increasing in size. Moreover, since there are no wiring intersections, there is no need to provide through holes, and the overall size is reduced.

Furthermore, when connecting the display panel 1 and the PT boards A to D, instead of directly bonding the PT boards C and D to the display panel 1, a relay board 7 as shown in FIG. 3(a) is created. , the display panel 1 and the PT substrates A to D may be connected through this as shown in FIG.

This relay board 7 has a terminal 5 for adhering to the display panel 1 described above, a terminal 6 for adhering the PT substrates A and B, and a terminal 6' for adhering the PT substrate length D.
and is provided.

The terminals 6 and 6' are arranged in a straight line, and are arranged at different positions. The Pt substrate C or D is bonded to the terminal 6° of this relay board 7, and the PT5 board A or B is bonded to the terminal 6. Then, the display panel 1 is further bonded using the terminals 5. With the above, the display panel 1 and the PT substrates A-D are
They are connected in a manner similar to that shown in FIG. 2(b).

In any of the above cases, flexible PT substrates can be used as the Pt substrates A to D.

Since the flexible PT5 board can be bent arbitrarily, it is convenient for subsequent handling and for housing the entire board in the housing of the display device.

In addition, in the implementation example described above, an example was explained in which the data driver group is divided into two systems for upper and lower hooks, but the number of divisions is arbitrary.
The present invention can also be used when dividing into three or more upper and lower hook systems.

Furthermore, as is already clear from the above description, by using the present invention, data lines can be wired without crossing each other, making it easier to design and manufacture a PT board.

〔Effect of the invention〕

As explained above, according to the present invention, when dividing into a plurality of data driver groups, the data lines can be arranged in the correct order on the display panel without wiring the data lines on the back side using through holes etc. Data drivers can be implemented in space.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the principle of the present invention, Fig. 2 (a), (bl is an explanatory diagram of an embodiment of the present invention,
Figures (al and (bl) are explanatory diagrams of a relay Pt board, and Figure 4 is an explanatory diagram of a conventional connection method. In the figures, 1 is a display panel, 2 is a data driver, and 3
is a data line, 4 is wiring, 5.6.6' is a terminal for connection, 7 is a relay Pt board, A-D is pt, Colored stools/Ja month country Figure 2 + '31 difference evil 1 ← Meiyuan Figure 3

Claims (1)

[Claims] A plurality of data drivers (2) that provide display data to a display panel (1) are divided and arranged into a plurality of groups (a to d),
In a matrix display device in which data lines (3) derived from the display panel are periodically divided and data lines of the same order are derived to the same data driver group, the plurality of data driver groups (a to d) Each is divided and mounted on separate printed circuit boards (A to D), and the wiring (
4) is integrated by connecting it to a corresponding data line (3) of a display panel (1).