JPH0580348A - Liquid crystal display module - Google Patents

Abstract

PURPOSE:To nearly equalize the total occupation area to the occupation area of a liquid crystal display panel. CONSTITUTION:Cut parts 15 and 17 are formed at the lower right corner part of an X-directional circuit board 6 and the left upper corner part of a Y- directional circuit board 9. The liquid crystal display panel is arranged on the front surface of a rectangular flat plate type holder 11. The X-directional circuit board 6 is arranged along the rear surface of the holder 11 by bending an X-directional flexible substrate 5 joined to the liquid crystal display panel by 90 deg. at two specific places. The Y-directional circuit board 9 is arranged along the rear surface of the holder 11 by bending a Y-directional flexible substrate 8 by 90 deg. at two specific places. In this state, the cut parts 16 and 18 of both the circuit boards 6 and 9 adjoin to each other, and consequently both the circuit boards 6 and 9 never overlap with each other. Consequently, the overall occupation can nearly be equalized to the occupation area of the liquid crystal display panel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display module.

[0002]

2. Description of the Related Art A liquid crystal display module used in electronic equipment such as a word processor is shown in FIG. 4, for example. This liquid crystal display module includes a liquid crystal display panel 1. The liquid crystal display panel 1 has a structure in which transparent electrodes (not shown) are provided in a matrix on front and rear surfaces of transparent substrates 2 and 3 made of glass or the like, and liquid crystals (not shown) are enclosed between them. Has become. One end in the X direction of the rear transparent substrate 3 is projected to the outside of the front transparent substrate 2, and an X direction input terminal (not shown) is provided on the front surface of the projected one end of the rear transparent substrate 3 in the X direction. ) Is provided. One end of the front transparent substrate 2 in the Y direction is projected to the outside of the rear transparent substrate 3, and a Y direction input terminal (not shown) is provided on the rear surface of the one end of the projected front transparent substrate 2 in the Y direction. Is provided.

To the X direction input terminal portion of the rear transparent substrate 3, each output side of the three X direction flexible substrates 5 on which the X direction semiconductor chips 4 for driving the liquid crystal display panel 1 are mounted is conductively bonded. It is joined via an agent (not shown). An X-direction circuit board 6 for controlling the X-direction semiconductor chip 4 is bonded to the input sides of the three X-direction flexible boards 5 via a conductive adhesive (not shown). In the Y direction input terminal portion of the transparent substrate 2 on the front side, each output side of the four Y direction flexible substrates 8 on which the Y direction semiconductor chips 7 for driving the liquid crystal display panel 1 are mounted is a conductive adhesive (not shown). It is joined through).
A Y-direction circuit board 9 for controlling the Y-direction semiconductor chips 7 is bonded to the input sides of the four Y-direction flexible boards 8 via a conductive adhesive (not shown). The bases of the X-direction and Y-direction flexible substrates 5 and 8 are made of resin such as polyimide. The X-direction and Y-direction circuit boards 6 and 9 are flexible circuit boards or hard circuit boards, and their bases are made of resin or ceramics. The portions of the X-direction circuit board 6 and the Y-direction circuit board 9 that are adjacent to each other may be connected to the flexible connection board 1 as necessary.
It is electrically connected by 0.

[0004]

However, in such a conventional liquid crystal display module, all the parts, that is, the liquid crystal display panel 1, the X-direction flexible substrate 5, and the X-direction flexible substrate 5 are provided.
Since the directional circuit board 6, the Y-direction flexible board 8, the Y-direction circuit board 9 and the flexible connection board 10 are arranged on substantially the same plane, the entire occupied area is considerably larger than the occupied area of the liquid crystal display panel 1. Therefore, there is a problem that the liquid crystal display device incorporating the liquid crystal display module becomes large in size. The purpose of this invention is
An object of the present invention is to provide a liquid crystal display module in which the entire occupied area can be made substantially the same as the occupied area of a liquid crystal display panel.

[0005]

According to the present invention, there is provided a liquid crystal display panel, an X-direction flexible substrate having an output side joined to one end in the X direction of the liquid crystal display panel, and an input side of the X-direction flexible substrate. An X-direction circuit board, a Y-direction flexible board whose output side is bonded to one end in the Y-direction of the liquid crystal display panel, and a Y-direction circuit board bonded to the input side of the Y-direction flexible board. Bending the X-direction and Y-direction flexible boards to arrange the X-direction and Y-direction circuit boards on the back surface side of the liquid crystal display panel, and arranging the corners at corners adjacent to each other of the X-direction and Y-direction circuit boards. Notched portions are provided so as not to overlap with each other.

[0006]

According to the present invention, most of the flexible boards in the X and Y directions and the circuit boards in the X and Y directions do not overlap with each other on the rear surface side of the liquid crystal display panel. Thus, the entire occupied area can be made substantially the same as the occupied area of the liquid crystal display panel.

[0007]

1 to 3 show the essential parts of a liquid crystal display module according to an embodiment of the present invention. In these figures, parts having the same names as those in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted as appropriate. This liquid crystal display module includes a holder 11 made of resin or ceramic. The holder 11 has a rectangular flat plate 12 and a predetermined 2
A substantially L-shaped X-direction engagement protrusion 13 is provided at each position, and a substantially L-shaped Y-direction engagement protrusion 14 is provided at another predetermined two positions on the rear surface of the flat plate 12. At the lower right corner of the X-direction circuit board 6 in FIG. 2, there is provided a notch 15 that is obliquely notched at 45 °. The lower right corner of the X-direction flexible substrate 5 in FIG. 2 is also provided with a notch 16 that is obliquely cut at 45 °. At the upper left corner of the Y-direction circuit board 9 in FIG. 2, a notch 17 that is obliquely cut at 45 ° is provided. 45 also on the upper left corner of the Y-direction flexible substrate 8 in FIG.
A cutout portion 18 is provided that is cut out at an angle of 0 °.
Engagement recesses 19 are provided at two predetermined positions on the right side of the X-direction circuit board 6 in FIG. Engagement recesses 20 are provided at two predetermined positions on the upper side of the Y-direction circuit board 9 in FIG.

The liquid crystal display panel 1 is attached to the front surface of the holder 11 with an adhesive or the like as required. The X-direction circuit board 6 is provided along the rear surface of the holder 11 by bending the three X-direction flexible boards 5 by 90 ° at predetermined two positions, and the two engaging recesses 19 are formed in the holder 11. 2 is attached to the left side of the rear surface of the holder 11 in FIG. The Y-direction circuit board 9 is arranged along the rear surface of the holder 11 by bending the four Y-direction flexible boards 8 by 90 ° at predetermined two positions, and the two engaging recesses 20 are formed in the holder 11. By being engaged with the two Y-direction engaging projections 14, the holder 11 is attached to the lower surface of the rear surface of the holder 11 in FIG. In this state, the cutout portion 16 of the X-direction circuit board 6 and the cutout portion 18 of the Y-direction circuit board 9 are adjacent to each other, so that the X-direction circuit board 6 and the Y-direction circuit board 9 do not overlap with each other. can do. Further, the cutout portion 16 of the predetermined one X-direction flexible substrate 5 and the cutout portion 18 of the predetermined one Y-direction flexible substrate 8 are adjacent to each other, so that the predetermined one X-direction flexible substrate 5 and the predetermined one. Y direction flexible substrate 8
It is possible to prevent and from overlapping each other. X
Notch portion 16 of the direction circuit board 6 and the Y direction circuit board 9
The cutout portion 18 is electrically connected by a flat cable (electrical connection member) 21 as necessary.

As described above, in this liquid crystal display module, most of the X-direction flexible board 5, most of the X-direction circuit board 6, most of the Y-direction flexible board 8, the Y-direction circuit board 9 and the flat cable 21 are connected to the liquid crystal display panel. 1
Can be arranged on the back surface side of the circuit board 6 so that adjacent portions of the circuit boards 6 and 9 do not overlap each other,
Therefore, the entire occupied area can be made substantially the same as the occupied area of the liquid crystal display panel 1.

In the above embodiment, the X-direction and Y-direction semiconductor chips 4 and 7 are mounted on the X-direction and Y-direction flexible substrates 5 and 8, but the invention is not limited to this. For example, the amount of protrusion of one end of the rear transparent substrate 3 in the X direction to the outside of the front transparent substrate 2 is increased to some extent, the X-direction semiconductor chip 4 is mounted there, and the Y of the front transparent substrate 2 is set. It is also possible to increase the amount of protrusion to the outside of the transparent substrate 3 on the rear side of the one end in the direction to a certain extent and mount the Y-direction semiconductor chip 7 there.

[0011]

As described above, according to the present invention, most of the X-direction and Y-direction flexible boards and the X-direction and Y-direction circuit boards are provided on the back side of the liquid crystal display panel. Since the adjacent parts are arranged so that they do not overlap with each other, the entire occupied area can be made almost the same as the occupied area of the liquid crystal display panel, which in turn reduces the size of the liquid crystal display device incorporating this liquid crystal display module. Can be promoted.

[Brief description of drawings]

FIG. 1 is a front view of a liquid crystal display module according to an embodiment of the present invention.

FIG. 2 is a rear view of the liquid crystal display module.

3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a front view of an example of a conventional liquid crystal display module.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid crystal display panel 5 X-direction flexible substrate 6 X-direction circuit substrate 8 Y-direction flexible substrate 9 Y-direction circuit substrate 11 Holders 15, 17 Notch 21 Flat cable (electrical connection member)

Claims (2)

[Claims] 1. A liquid crystal display panel, an X-direction flexible substrate whose output side is joined to one end in the X-direction of the liquid crystal display panel, and an X-direction circuit substrate joined to the input side of the X-direction flexible substrate, A Y-direction flexible substrate whose output side is bonded to one end in the Y-direction of the liquid crystal display panel;
A Y-direction circuit board joined to the input side of the Y-direction flexible board, and bending the X-direction and Y-direction flexible board to dispose the X-direction and Y-direction circuit board on the back surface side of the liquid crystal display panel. In addition, the liquid crystal display module is characterized in that the X-direction and Y-direction circuit boards are provided with notches formed at diagonally adjacent corners so that the corners do not overlap each other. 2. The liquid crystal display according to claim 1, wherein a cutout portion of the X-direction circuit board and a cutout portion of the Y-direction circuit board are electrically connected by an electrical connecting member. module.