KR100473456B1 - Liquid crystal display device - Google Patents

Abstract

In the liquid crystal panel 1, the second electrode pattern 50 enclosed on both sides of the second substrate 20 is avoided so as to avoid the first electrode pattern 40 formed on the first substrate 10. 2 The first electrode pattern 40 which can form the terminal-to-board conduction terminals 60 and 70 straight even when the signal is input directly from the external input terminal 82 and the signal is input by the conduction between the boards. Is inputted by conduction between boards. Thereby, it is not necessary to conduct inter-substrate conduction at the portion where the pattern cannot be obliquely extended, and only the second electrode pattern 50 capable of narrowing the distance between the patterns can be formed at the portion at which the pattern cannot be obliquely extended. do.

Description

Liquid crystal display device

The present invention relates to a liquid crystal display device. In more detail, it is related with the electrode structure in each board | substrate of the liquid crystal panel which comprises a liquid crystal display device.

11 is an exploded perspective view of a conventional liquid crystal panel. FIG. 12 is an enlarged plan view of electrode patterns and terminals formed on the first substrate 10X of the liquid crystal panel shown in FIG. 11. FIG. 13 is an enlarged plan view of electrode patterns and terminals formed on the second substrate 20Y of the liquid crystal panel illustrated in FIG. 11. FIG. 14 is an enlarged plan view of the electrode pattern and the terminal when the first substrate 10X shown in FIG. 12 and the second substrate shown in FIG. 13 are bonded together.

FIG. 11 is a passive matrix form in which a substrate 10X having a first electrode pattern 40X and a substrate 20Y having a second electrode pattern 50Y are bonded to each other to drive a liquid crystal sandwiched between the first and second electrode patterns. The liquid crystal display device of FIG. Such a passive matrix liquid crystal display device is liquid crystal display by the sealing material 30 between a pair of substrates bonded by the sealing material 30 through a predetermined gap, as shown schematically in FIG. 11. The sealing region 35 is partitioned, and the liquid crystal is sealed in this liquid crystal sealing region 35.

In the liquid crystal panel 1 of such a structure, the 2nd electrode pattern 50Y and the external input terminal 82X are between the 1st board | substrate conduction terminal 60X, and the 2nd board | substrate conduction terminal 70Y. It is electrically connected by arrange | positioning a conductive material. Therefore, a signal for driving the liquid crystal can be applied to the second electrode pattern 50Y formed on the second substrate 20Y from the external input terminal 82X formed on the first substrate. In the liquid crystal panel 1, all of the external input terminals 81X and 82X formed on the first substrate are respectively provided to the first electrode pattern 40X and the second electrode pattern 50Y formed on different substrates. A signal for driving the liquid crystal can be input.

In the liquid crystal panel shown in FIG. 11, the terminals 81X and 82X for external input are formed in the first terminal formation region near the substrate side 101X of the first substrate. The conduction between the first terminal-to-conductive terminal 60X and the second substrate-to-conductive terminal 70Y is performed by the second terminal formation region 21Y near the first terminal formation region and the substrate side 201X of the second substrate. Is done in Here, since the substrate sides 101X and 201Y are sides extending in the same direction, the external input terminals 81X and 82X may be connected to each other through a flexible substrate (not shown), a rubber connector, or the like. Or one end of the first terminal formation region 11X does not overlap with the substrate 20Y, that is, from the substrate side 201Y of the second substrate 20Y, in order to directly connect to an external circuit such as a liquid crystal drive driver. It is formed in the extended protrusion part 15X which extended out. The external input terminals 81X and 82X formed thereon are connected to an external circuit such as a liquid crystal drive driver directly through a flexible substrate (not shown), a rubber connector, or the like at a portion close to the substrate side 101X. Connected. On one side thereof, the other end of the first terminal formation region 11X is the second end of the second substrate 20Y in order to allow the first terminal-to-conductive terminal 60X and the second substrate-to-conductive terminal 70Y to conduct. It extends to the area | region which planarly overlaps with the terminal formation area | region 21Y.

12 and 13 are plan views showing, in an enlarged manner, a part of the respective terminal formation regions respectively formed in the first substrate 10X and the second substrate 20Y used in the conventional liquid crystal panel 1, respectively.

11 and 12, a plurality of first external parts arranged in the central region of the substrate side 101X in the first terminal formation region 11X formed along the substrate side 101X of the first substrate 10X. An input terminal 81X is formed. Moreover, the some 2nd external input terminal 82X arrange | positioned along the board | substrate edge 101X is formed in the area | region corresponding to both sides (both ends) of the area | region in which the 1st external input terminal 81X is formed. . A plurality of columns of the first electrode pattern 40X for driving the liquid crystal are formed from the first external input terminal 81X, and the second terminal of the second substrate 20Y from the second external input terminal 82X. The terminal 60X for conduction between 1st board | substrates is extended to the position which overlaps with the formation area 21Y. The first electrode pattern 40X, the first external input terminal 81X, the second external input terminal 82X, and the first board-to-substrate conductive terminal 60X are all made of ITO film (Indium Tin Oxide / transparent conductive). Film) or the like.

On the other hand, in the 2nd board | substrate 20Y, as can be seen from FIG. 11 and FIG. 13, it corresponds to the 1st board | substrate for conduction 60X of the 1st board | substrate 10X of the 2nd terminal formation area 21Y. At the position, a plurality of second inter-conducting terminals 70Y are formed along the substrate side 201Y. From these second board-to-substrate terminals 70Y, regions corresponding to both sides of the formation region of the first electrode pattern 40X are turned so as to intersect with the first electrode pattern 40X in the liquid crystal sealing region 35. A plurality of extended second electrode patterns 50Y for driving the liquid crystal are formed. The second electrode pattern 50Y and the second terminal conductive terminal 70Y are also formed of an ITO film or the like.

As described above, in the second substrate 20Y, the second electrode pattern 50Y is removed so as to avoid the region of the first electrode pattern 40X formed on the first substrate 10X and to return to the regions corresponding to both sides thereof. It is necessary to extend from 2 board | substrate conduction terminal 70Y. Therefore, the terminal 70Y for conducting between the second substrates is a region close to the end of the formation region of the first electrode pattern 40X formed on the first substrate 10X (center region side of the substrate side 201Y). Although it is formed linearly, the ratio which occupies inclinedly extended part (inclined part 702Y) as it falls to both sides from it becomes large. However, unlike the normal wiring portion, the second terminal-to-conductive terminal 70Y is a conductive material sandwiched between the substrates and is used for conducting a conductive connection with the first-to-substrate conductive terminal 60X. Short circuits are likely to occur between. Therefore, in order to reliably prevent such a short circuit between terminals, it is necessary to ensure a sufficiently wide gap between adjacent terminals. Therefore, in the second board-to-board conduction terminal 70Y formed in the region (both ends of the substrate side 201Y) away from the end of the formation region of the first electrode pattern 40X, a straight line is formed between adjacent terminals. A large difference is given to the length dimension of the portion 701Y, and the wire is formed by bent in an inclined direction in the direction of both sides 103X of the substrate 10X, whereby the inclined portion of the second terminal conductive terminal 70Y is formed. (702Y) The space between each other is secured. Therefore, as can be seen in FIG. 13, the line E connecting the boundary between the straight line portion 701Y and the inclined portion 702Y in the terminal 70Y between the second substrates is connected to the substrate side 201Y. The angle α to be formed is quite large.

On the other hand, in the part where the 2nd board | substrate conduction terminal 70Y extends straight to the area | region near the formation area | region of 1st electrode pattern 40X, even if the 2nd electrode pattern 50Y extended there is inclined. In this inclined portion 502Y, no conduction is conducted between the substrates by the conductive material, so that the distance between adjacent patterns can be significantly narrowed. Therefore, the angle formed by the line connecting the boundary between the straight portion 501Y and the inclined portion 502Y to the substrate side 201Y in the second electrode pattern 50Y is considerably small.

In the configuration of the liquid crystal panel 1 using the first substrate 10X and the second substrate 20Y configured as described above, as shown in FIGS. 11 and 14, the first substrate 10X and the second substrate ( When 20Y) is bonded through the seal member 30, the seal member 30 is blended with the cap member and the conductive member, and the seal member 30 is connected to the first board-to-conductive terminal 60X and the second substrate. It forms in the area | region in which the interconducting terminal 70Y overlaps by application | coating or printing. Therefore, when the 1st board | substrate 10X and the 2nd board | substrate 20Y are bonded together through the sealing material 30Y, the conducting material contained in the sealing material 30 and the terminal 60X for conduction between 1st board | substrates are carried out. The conductive terminal 70Y between the second substrates is conductive. In addition, when the first substrate 10X and the second substrate 20Y are bonded to each other, the pixel 5 is formed in a matrix by the intersection of the first electrode pattern 40X and the second electrode pattern 50Y. Therefore, after mounting a flexible substrate using the anisotropic conductive material etc. in the position near the board | substrate side 101X of the 1st terminal formation area | region 11X of the 1st board | substrate 10X, the 1st board | substrate ( When a signal is input to the first external input terminal 81X and the second external input terminal 82X of 10X, the first electrode pattern 40X formed on the first substrate 10X is provided for the first external input. Image data can be applied through the terminal 81X, and a first external input terminal 82X and a first terminal for conducting conduction between the first substrate are formed on the second electrode pattern 50Y formed on the second substrate 20Y. 60X), the scan signal can be applied through the conductive material and the terminal 70Y for conducting between the second substrate.

However, in the above prior art, conduction is conducted using the terminal 70Y for conducting between the second substrates so as to extend obliquely. Therefore, in order to ensure the terminal width of the board-to-board conduction terminal sufficient to ensure the reliability of board-to-board conduction, or the width | variety between adjacent terminals, a large difference will be made in the length dimension of the linear part 701Y between adjacent terminals. In addition, it is necessary to secure a sufficiently sufficient distance to the inclined portion 702Y. That is, there is a problem that this area other than the display area is used unnecessarily. Therefore, in the conventional electrode structure, the corner portion and the second terminal formation region in which the pattern located at the outermost side of the first electrode pattern 40X formed on the first substrate 10X are bent near the display region ( The number of the second electrode patterns 50Y formed between the proximal end portions of the terminals located at the outermost side of 21Y (the area width indicated by the arrow B) and the number of the terminal 70Y for conducting between the second substrates significantly differ. There is a problem that it cannot be increased. For example, when the number of the second electrode patterns 50Y and the terminal 70Y for conduction between the second substrates are increased, as shown in FIG. 14, the second electrode pattern 50Y is the first electrode pattern in the region 250. There exists a problem that it overlaps with 40X, and the probability that a short circuit generate | occur | produces between board | substrates becomes high. Further, for the purpose of increasing the number of the second electrode patterns 50Y and the number of the terminal 70Y for conducting between the second substrates, the interval between the inclined portions 702Y of the terminal 70Y for conducting between the second substrates is narrowed to obtain the first electrode. If the area for adding the two-electrode pattern 50Y is secured, the probability of occurrence of a short circuit between adjacent terminals increases. In addition, the area width indicated by the arrow B is narrowed so as to narrow the line width and the interval of the second electrode pattern 50Y or the terminal 70Y for conducting between the second substrates to add the second electrode pattern 50Y. Ensures that the electrical resistance (wiring resistance) increases and the display quality deteriorates.

Therefore, an object of the present invention is to perform signal input from an external input terminal formed on one of the pair of substrates holding the liquid crystal, and conduct the conduction between the substrates using a conductive material sandwiched between the substrates to the other substrate. In a liquid crystal panel in which a signal input is performed, by effectively using a wiring region in a non-display region, it is possible to provide a configuration capable of increasing the number of liquid crystal driving electrode patterns without degrading reliability or display quality. have.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the external appearance of the liquid crystal panel used for the liquid crystal display device which concerns on Example 1 of this invention.

FIG. 2 is a perspective view schematically showing a state in which the liquid crystal panel shown in FIG. 1 is disassembled. FIG.

FIG. 3 is an enlarged plan view of electrode patterns and terminals formed on the first substrate of the liquid crystal panel shown in FIG. 2. FIG.

4 is an enlarged plan view showing an electrode pattern and a terminal formed on a second substrate of the liquid crystal panel shown in FIG. 2;

FIG. 5 is an enlarged plan view of the electrode pattern and the terminal when the first substrate shown in FIG. 3 and the second substrate shown in FIG. 4 are bonded together.

Fig. 6 is a perspective view showing an appearance of a liquid crystal panel used in the liquid crystal display device according to the second embodiment of the present invention.

7 is a perspective view schematically illustrating a state in which the liquid crystal panel illustrated in FIG. 6 is disassembled.

FIG. 8 is an enlarged plan view of electrode patterns and terminals formed on the first substrate of the liquid crystal panel shown in FIG. 7; FIG.

FIG. 9 is an enlarged plan view of electrode patterns and terminals formed on a second substrate of the liquid crystal panel shown in FIG. 7; FIG.

10 is an enlarged plan view showing an electrode pattern and a terminal when the first substrate shown in FIG. 8 and the second substrate shown in FIG. 9 are bonded to each other.

11 is an exploded perspective view of a conventional liquid crystal panel.

FIG. 12 is an enlarged plan view of electrode patterns and terminals formed on the first substrate of the liquid crystal panel shown in FIG. 11; FIG.

FIG. 13 is an enlarged plan view of electrode patterns and terminals formed on the second substrate of the liquid crystal panel shown in FIG. 11; FIG.

FIG. 14 is an enlarged plan view of the electrode pattern and the terminal when the first substrate shown in FIG. 12 and the second substrate shown in FIG. 13 are bonded together.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, this invention is electrically connected with the 1st board | substrate conduction terminal arrange | positioned adjacent to the side of a board | substrate, and the said 1st board | substrate conduction terminal, and the said 1st board | substrate conduction terminal. A first substrate having a first electrode pattern disposed so as to extend toward an opposite side to an adjacent side, a first external input terminal disposed adjacent to a side of the substrate, and an electrical connection with the first external input terminal. A conductive terminal between the second substrates connected to each other, a second external input terminal disposed on both sides of the first external input terminal, and a second electrode pattern electrically connected to the second external input terminal; A second substrate, wherein the first substrate and the second substrate are disposed to face each other such that the first electrode pattern and the second electrode pattern extend in a direction crossing each other; And the conductive terminal between the second substrates is electrically connected by a conductive material sandwiched between the first substrate and the second substrate.

In the first liquid crystal display device of the present invention, the conductive terminal between the first substrates formed on the first substrate and the conductive terminal between the second substrates formed on the second substrate are connected to each other by a conductive material. So-called board | substrate conduction which electrically connects the 1st electrode pattern and the 1st external input terminal on a 2nd board | substrate is performed. In the present invention, in conducting the inter-substrate conduction, the first electrode pattern formed to extend toward the opposite side of the side on which the conducting terminal between the first substrates is formed is connected to the first external input terminal formed on the second substrate. . Further, the second electrode pattern formed to extend in the direction intersecting the first electrode pattern is connected to the second external input terminal disposed on both sides of the first external input terminal without conducting conduction between the substrates. According to this structure, since the 1st electrode pattern is used for the board | substrate conduction, the number of 2nd electrode patterns can be increased, without worrying about the reliability of the board | substrate conduction. This is because even though the number of patterns in the portion (e.g., A in FIG. 4), which cannot be extended inclined, increases, the pattern is not a pattern used for conduction between substrates, so that even if the width between adjacent patterns is narrowed. It doesn't matter. Therefore, even if the number of the second electrode patterns is increased, there is no need to narrow the interval of the terminal for conducting between the substrates, and there is no need to narrow the line width of the first pattern. Therefore, according to this invention, the number of liquid crystal drive electrode patterns can be increased, without reducing reliability and display quality. In addition, even when the number of the second electrode patterns is not increased by that much, the portion where the pattern cannot be obliquely extended can be narrowed, so that the display area can be expanded in a liquid crystal panel having the same external dimension as the conventional size. have.

Moreover, in this invention, it is preferable that the said 1st board | substrate conduction terminal and the said 2nd board | substrate conduction terminal are arrange | positioned linearly toward the side which opposes the adjacent side. That is, in the area | region where the 1st conductive terminal and the 2nd board | substrate conduction terminal are conducting board | substrate conduction, by setting it as the structure which is not inclined, it becomes possible to ensure the distance between terminals fully, Increased reliability

In the present invention, it is preferable that image data is supplied to the first electrode pattern and a scan signal is supplied to the second electrode pattern. In the liquid crystal device having such a configuration, the first electrode pattern includes image data through, for example, the first external input terminal, the second terminal-to-conductive terminal, the conductive material, and the first-to-first conductive terminal. It is used as a supplied data electrode pattern, and the second electrode pattern is used as a scan electrode pattern to which a scan signal is applied through the second external input terminal.

The second liquid crystal display device of the present invention is provided between first substrates disposed adjacent to sides of the substrate.

A first electrode having a first electrode pattern electrically connected to a conductive terminal and a conductive terminal between the first substrates and arranged such that the conductive terminal between the first substrates extends toward a side opposite to an adjacent side; A second substrate having a substrate, an external input terminal disposed adjacent to a side of the substrate, a terminal for conducting between the second substrate, and a second electrode pattern, wherein the first electrode pattern and the second electrode pattern are mutually Are arranged so as to face each other so as to extend in an intersecting direction, are mounted on the second substrate, an input terminal is electrically connected to the external input terminal, and an output terminal is a conductive terminal between the second substrate and the first substrate; A conductive material having a driving IC electrically connected to a two-electrode pattern, wherein the first inter-conductive terminal and the second inter-conductive terminal are sandwiched between the first substrate and the second substrate; That it is electrically connected by features.

In the second liquid crystal display device of the present invention, so-called inter-substrate conduction is performed in which a conducting terminal connects the conducting terminal between the first substrate formed on the first substrate and the conducting terminal between the second substrate formed on the second substrate with a conducting material. . Therefore, the first electrode pattern on the first substrate is connected to the output terminal of the driving IC mounted on the second substrate via the conductive terminal between the first and second substrates. In the present invention, in conducting the inter-substrate conduction, a first electrode pattern formed to extend toward the opposite side of the side where the first inter-substrate conduction terminal is formed is used. Moreover, the 2nd electrode pattern arrange | positioned so that it may extend in the direction which cross | intersects the said 1st electrode pattern is connected to the output terminal of a drive IC, without conduction between board | substrates. According to this structure, since the 1st electrode pattern is used for the board | substrate conduction, the number of 2nd electrode patterns can be increased, without worrying about the reliability of the board | substrate conduction. This is because even though the number of patterns in the portion (e.g., A of FIG. 4) where the pattern cannot be extended obliquely increases, this pattern is not a pattern used for conduction between substrates. Because there is not. Therefore, even if the number of the second electrode patterns is increased, there is no need to narrow the interval of the terminal for conducting between the substrates, and there is no need to narrow the line width of the first pattern. Therefore, according to the present invention, the number of liquid crystal driving electrode patterns can be increased without lowering the reliability and the display quality. Further, in the second liquid crystal display device of the present invention, it is used for the first liquid crystal display device described above. Various configurations can be employed, for example,

(1) The terminal for conducting between a 1st conducting terminal and a 2nd board | substrate is formed linearly toward the side opposite to the side in which they were formed.

(2) Image data is supplied to the first electrode pattern and a scan signal is supplied to the second electrode pattern.

Various configurations, such as these, can be employ | adopted.

Since the effect by said (1) and (2) is equivalent to the 1st liquid crystal display device by this invention mentioned above, the description is abbreviate | omitted here.

Embodiments of the present invention will be described with reference to the accompanying drawings.

EXAMPLE 1

(Overall configuration)

1 is a perspective view showing the appearance of a liquid crystal panel used in the liquid crystal display device of the present embodiment, and FIG. 2 is a perspective view schematically showing a state in which the liquid crystal panel is disassembled. FIG. 3 is an enlarged plan view showing electrode patterns and terminals formed on the first substrate of the liquid crystal panel shown in FIG. 2. 4 is an enlarged plan view illustrating an electrode pattern and a terminal formed on a second substrate of the liquid crystal panel illustrated in FIG. 2. 1 and 2 schematically show electrode patterns, terminals, and the like, and detailed description thereof will be described later with reference to FIGS. 3 and 4, in which part of electrode patterns and terminals are enlarged.

1 and 2, a liquid crystal panel 1 used in a passive matrix type liquid crystal display device mounted on an electronic device such as a cellular phone has a first substrate 10 made of glass, plastic, or the like through a predetermined gap. ) And the second substrate 20 are joined to each other via the sealing member 30. The liquid crystal is sealed in the liquid crystal sealing region 35 partitioned by the sealing material 30. A plurality of first electrode patterns 40 extending in the vertical direction in the liquid crystal sealing region 35 are formed in the first substrate 10, and the second substrate 20 is horizontally formed in the liquid crystal sealing region 35. A plurality of second electrode patterns 50 extending in the direction are formed.

In the liquid crystal panel 1 shown here, the polarizing plate 5 is adhere | attached on the outer surface of the 2nd board | substrate 20 by an adhesive agent etc., and the polarizing plate 6 is adhere | attached on the outer surface of the 1st board | substrate 10 with an adhesive agent etc., have. When the liquid crystal panel 1 is configured as a reflection type, a reflection plate (not shown) is adhered to the outside of the polarizing plates 5 and 6 or instead of the polarizing plates 5 and 6.

In the liquid crystal panel 1 configured in this manner, the first and second external input terminals 81 and 82 are formed in the second terminal formation region near the substrate side 201 of the second substrate. The conduction between the first inter-substrate conductive terminal 60 and the second inter-substrate conductive terminal 70 is performed by the first terminal formation region 11 and the second terminal formation region (near the substrate side 101 of the first substrate). 21) takes place. Here, since the first substrate sides 101 and 102 are sides extending in the same direction, the first and second external input terminals 81 and 82 are connected through a flexible substrate (not shown), a rubber connector, or the like. Alternatively, one end of the second terminal formation region 21 extends from a portion that does not overlap the substrate 10, that is, the substrate side 101 of the first substrate 10 in order to directly connect to an external circuit such as a liquid crystal driving driver. It is formed on the part that comes out. Therefore, a substrate larger than the first substrate 10 is used as the second substrate 20. On the other hand, the other end of the second terminal formation region 21 is the first end of the first substrate 10 in order to conduct the first terminal conductive terminal 60 and the second substrate conductive terminal 70. It extends to the area | region which planarly overlaps with the terminal formation area | region 11. As shown in FIG.

In this embodiment, as shown in FIGS. 2 and 3, the first terminal formation region 11 is formed along the central portion of the substrate side 101 of the first substrate 10, and the first terminal formation region ( In 11), a plurality of first inter-conducting terminals 60 are arranged at predetermined intervals along the substrate side 101. In addition, in the first substrate 10, a plurality of rows of the first electrode pattern 40 for driving the liquid crystal are extended to both sides from the first substrate-to-substrate terminal 60 toward the opposite substrate side 102 to be inclinedly extended. In the liquid crystal sealing region 35 extends in the direction orthogonal to the substrate sides 101 and 102. Here, the first electrode pattern 40 and the first terminal for conducting terminal 60 are formed of an ITO film formed in a predetermined pattern.

2 and 4, in the second substrate 20, the second terminal formation region 21 is also formed along the substrate side 201, but the second terminal formation region 21 is formed in the second substrate 20. It is formed over a relatively wide range except for both ends of the substrate edge 201. In the second terminal formation region 21, a plurality of first external input terminals 81 arranged at predetermined intervals along the substrate edge 201 in the center region thereof, and their first external input terminals 81. A plurality of second external input terminals 82 which are arranged at predetermined positions along the substrate edge 201 at two positions on both sides of the region where the cross section is formed are formed. Here, the first external input terminal 81 and the second external input terminal 82 are both facing the substrate side 202 (see FIG. 2) in the second terminal formation region 21. It is extended.

In addition, in the second substrate 20, when the first substrate 10 and the second substrate 20 are bonded to each other from the first external input terminal 81, the terminal 60 for conduction between the first substrate and A plurality of overlapping second terminal-to-substrate conductive terminals 70 extend linearly toward the substrate side 202.

In the second substrate 20, when the first substrate 10 and the second substrate 20 are bonded to each other from the second external input terminal 82, the formation area of the first electrode pattern 40 is formed. A plurality of rows of liquid crystal drive second electrode patterns 50 are formed so as to enter regions corresponding to both sides. These second electrode patterns 50 extend in the liquid crystal sealing region 35 so as to intersect the first electrode patterns 40. That is, the wiring of the second electrode pattern 50 formed on the second substrate 20 is the first electrode pattern on the first substrate 10 when the first substrate 10 and the second substrate 20 are bonded to each other. In each of the regions corresponding to the planes on both sides of the region where the 40 is formed, each of the sides extends obliquely toward the side edge 203, and then the liquid crystal sealing region 35 (or the side edge of the substrate 20). 203), it extends linearly toward the opposing substrate side 202, and then extends in parallel with the substrate sides 201 and 202 in the liquid crystal sealing region 35. As shown in FIG. Here, any of the second electrode pattern 50, the first external input terminal 81, the second external input terminal 82, and the second substrate-to-conductive terminal 70 are formed of ITO in a predetermined pattern. It is formed into a film.

In configuring the liquid crystal panel 1 by using the first substrate 10 and the second substrate 20 configured as described above, in this embodiment, the first substrate 10 and the second substrate 20 are sealed with a sealing material ( When bonding through 30, a gap material and a conductive material are mix | blended with the sealing material 30, and the sealing material 30 is the terminal 60 for conduction between the 1st board | substrates, and the terminal 70 for conduction between 2nd board | substrates. ) Is also formed in the region where they overlap. Here, the electrically conductive material contained in the sealing material 3O4 is a particle | grain which plated the surface of the metal particle or the plastic beads which can be elastically deformed, for example, of the particle | grains which plated the surface of the plastic beads which can be elastically deformable. In this case, the particle diameter is about 6.6 μm. On the other hand, the particle diameter of the gap material contained in the sealing material 304 is about 5.6 micrometers. Therefore, when the sealing material 30 is melted and hardened while applying a pressing force to close the gap in the state where the first substrate 10 and the second substrate 20 are sandwiched, the conductive material is the first substrate ( The terminal 60 for conducting between the first board | substrate and the terminal 70 for conducting between the 2nd board | substrate are made conductive in the state pressed between 10) and the 2nd board | substrate 20. FIG.

FIG. 5 is an enlarged plan view showing an electrode pattern and a terminal when the first substrate shown in FIG. 3 and the second substrate shown in FIG. 4 are bonded together.

As shown in FIG. 5, when the first substrate 10 and the second substrate 20 are bonded to each other through the seal member 30, an intersection portion between the first electrode pattern 40 and the second electrode pattern 50 is formed. By this, the pixels 5 are formed in a matrix. For this reason, after mounting the flexible board 90 using the anisotropic conductive material etc. to the edge part of the board | substrate side 201 side of the 2nd terminal formation area 21 of the 2nd board | substrate 20, this flexible board | substrate ( When a signal is input to the first external input terminal 81 and the second external input terminal 82 of the second substrate 20 through an external circuit such as 90), the second agent is formed on the second substrate 20. The scan signal may be applied to the second electrode pattern 50 through the second external input terminal 82, and the first external input may be applied to the first electrode pattern 40 formed on the first substrate 10. Image data can be signal-input through the terminal 81 for conduction, the terminal 70 for conduction between 2nd board | substrates, the conductive material, and the terminal 60 for conduction between 1st board | substrates. Therefore, the alignment state of the liquid crystal located between the first electrode pattern 40 and the second electrode pattern 50 in each pixel 5 can be controlled by these image data and the scanning signal. A predetermined image can be displayed.

In the related art, the first electrode pattern 40 in the vertical direction is directly inputted from an external input terminal without going through vertical conduction between the substrates, and surrounds the first electrode pattern 40 to both sides to avoid the first electrode pattern 40. Signals were input to the second electrode pattern 50 in the transverse direction through the board-to-board conduction terminal extending inclined. On the other hand, in this embodiment, the second electrode pattern 50 in the horizontal direction enclosed on both sides to avoid the first electrode pattern 40 is directly signaled from the second external input terminal 82 without undergoing vertical conduction between the substrates. Enter. On the other hand, a signal is input to the first electrode pattern 40 in the vertical direction from the external input terminal 81 via conduction between substrates. Therefore, it is not necessary to form the board-to-board conduction terminal inclined, so that the first board-to-board conduction terminal 60 and the second board-to-board conduction terminal 70 can be formed straight. That is, the portion where the pattern cannot be inclined to be inclined (on the innermost portion of the second electrode pattern 50, the curved portion near the display area and the outermost portion of the second electrode pattern 50). Since it is not necessary to conduct the board-to-board conduction in the area | region where the pattern cannot be inclined between each part of the pattern located (the area | region width shown by arrow A), stable connection is ensured and connection reliability improves. do. In addition, the distance (pitch interval) between patterns can be narrowed in the part which cannot be extended diagonally and the narrow-pitch 2nd electrode pattern 50 is formed. For this reason, in the 2nd electrode pattern 50, what is necessary is to give a small difference to the length dimension of the linear part 501 between adjacent patterns, and to bend it inclined therefrom, and the inclined part 502 of the 2nd electrode pattern 50 is carried out. ) You can narrow the gap between them. Therefore, as can be seen in FIG. 4, in the second electrode pattern 50, the angle at which the line F connecting the boundary between the straight portion 501 and the inclined portion 502 forms the substrate edge 201. As (β) is small, a large number of patterns can be formed even in a region where such a layout constraint is large. Therefore, even when the number of patterns to be formed in a region where such a layout constraint is large, it is not necessary to narrow the interval between the first terminal-to-conductive terminal 60 and the second substrate-to-conductive terminal 70, In addition, it is not necessary to narrow the line width of the pattern. Therefore, according to this embodiment, the number of liquid crystal drive electrode patterns can be increased, without reducing reliability and display quality. In addition, in the liquid crystal panel requiring vertical conduction between the substrates, if the number of patterns is the same, the portion of the second substrate 20 which cannot be extended to be inclined can be narrowed than before, so that the external dimensions can be reduced in size. In the liquid crystal panel 1 having the same size as the external dimension, an enlarged wider display area can be ensured. In addition, as long as it is possible to narrow the portion of the second substrate 20 that cannot extend the pattern obliquely than in the related art, in the liquid crystal panel 1 having the same size as the conventional display area, the external dimension can be made small. have.

EXAMPLE 2

In the liquid crystal panel 1, a driving IC may be mounted on a substrate by a COG chip (Chip on glass) or a COP chip (Chip On Plastic Pane1). In this case, a signal is input to the driving IC from the outside and driven. An image data signal or a scanning signal is output to each electrode pattern from the IC for the application. The case where the present invention is applied to this type of liquid crystal panel will be described with reference to FIGS. 6, 7, 8, 9, and 10.

FIG. 6 is a perspective view showing the appearance of a liquid crystal panel used in the liquid crystal display device of the present embodiment, and FIG. 7 is a perspective view schematically showing a state in which this liquid crystal panel is disassembled. FIG. 8 is an enlarged plan view of electrode patterns and terminals formed on the first substrate of the liquid crystal panel shown in FIG. 7. FIG. 9 is an enlarged plan view illustrating electrode patterns and terminals formed on a second substrate of the liquid crystal panel illustrated in FIG. 7. 6 and 7 schematically show electrode patterns, terminals, and the like, and detailed description thereof will be described later with reference to FIGS. 8 and 9 in which portions of the electrode patterns and terminals are enlarged.

6 and 7, in the liquid crystal panel 1 of this embodiment, the first substrate 10 and the second substrate 20 made of glass, plastic, or the like are placed through the seal member 30 through a predetermined gap. It is joined toward. The liquid crystal is sealed in the liquid crystal sealing region 35 partitioned by the sealing material 30. A plurality of first electrode patterns 40 extending in the vertical direction in the liquid crystal sealing region 35 are formed in the first substrate 10, and the second substrate 20 is horizontally formed in the liquid crystal sealing region 35. A plurality of second electrode patterns 50 extending in the direction are formed. In the liquid crystal panel 1 shown here, the polarizing plate 5 is bonded by the outer surface of the 2nd board | substrate 20, and the polarizing plate 6 is bonded by the outer surface of the 1st board | substrate 10. As shown in FIG. When the liquid crystal panel 1 is configured as a reflection type, a reflection plate (not shown) is bonded to the outside of the polarizing plates 5 and 6 or instead of the polarizing plates 5 and 6.

In the liquid crystal panel 1 configured as described above, even if any one of signal input from the outside and conduction between the substrates is performed, first terminal formation formed on each of the first substrate 10 and the second substrate 20 is performed. The region 11 and the second terminal formation region 21 are used. Therefore, the board | substrate larger than the 1st board | substrate 10 is used as the 2nd board | substrate 20, and when the 1st board | substrate 10 and the 2nd board | substrate 20 are bonded and superimposed, the board | substrate side of the 1st board | substrate 10 ( Connection of the rubber substrate (not shown) such as the flexible substrate 90 or the conductive rubber is performed using the extended projecting portion from which the second substrate 20 extends from 101.

In constructing such a connection structure, in this embodiment, as shown in FIGS. 7 and 8, in the first substrate 10, the first terminal formation region 11 is formed at the substrate side of the first substrate 10 ( It is formed along the central part of 101, and in this 1st terminal formation area | region 11, the some terminal for conduction 60 between 1st board | substrate is arrange | positioned along predetermined board | substrate 101 at predetermined intervals. In addition, in the first substrate 10, a plurality of rows of the first electrode pattern 40 for driving the liquid crystal are extended to both sides from the first substrate-to-substrate terminal 60 toward the opposite substrate side 102 to be inclinedly extended. And extending in the direction perpendicular to the substrate sides 101 and 102 in the liquid crystal sealing region 35.

As shown to FIG. 7 and FIG. 9, although the 2nd terminal formation area | region 21 is also formed along the board | substrate edge 201 in the 2nd board | substrate 20, this 2nd terminal formation area | region 21 is It is formed over a relatively wide range except for both ends of the substrate side 201, and a plurality of external input terminals 80 arranged at predetermined intervals along the substrate side 201 are formed in the second terminal formation region. have. The external input terminal 80 extends linearly toward the opposing substrate side 202 (see FIG. 7) in the second terminal formation region 21. The driver IC 8 for supplying image data to the first electrode pattern 40 and supplying the second electrode pattern 50 is mounted in the extended protruding portion 25. The input terminal of the driver IC 8 is connected to the external input terminal 80 (the connection of the external input terminal 80 and the driver IC is omitted), and the signal from the outside of the liquid crystal panel 1 Is input from the external input terminal 80 to the driving IC 8. The output terminal of the driving IC is connected to the first electrode pattern 40 via the second electrode pattern 50 and the first and second substrate-to-conductive terminals 60 and 70.

In this embodiment, the semiconductor (IC) mounting region 7 is formed in the region adjacent to the liquid crystal sealing region 35 side with respect to the external input terminal 80 on the second substrate 20. ) The driving IC 8 is mounted in the mounting region 7. From the output terminal (terminal located in the center area | region of the 2nd terminal formation area | region 21) of the drive IC8 arrange | positioned in the center direction of the longitudinal direction of this IC mounting area | region 7, the 1st board | substrate 10 is carried out. When the second substrate 20 is bonded to each other, the terminals 70 are linearly wired toward the substrate side 202 to the portion overlapping with the terminal 60 for conducting between the first substrates. Is formed. (The connection between the linear portion 501 of the conductive terminal 70 for the second substrate and the second electrode pattern 50 and the driving IC is omitted.) In addition, the length of the semiconductor (IC) mounting region 7 The first electrode when the first substrate 10 and the second substrate 20 are joined from an output terminal (terminals located in both regions of the second terminal formation region 21) of the driving IC disposed in both regions. A plurality of rows of liquid crystal driving second electrode patterns 50 are formed from the straight portions 501 via the diagonal portions 502 so as to enter regions corresponding to both sides of the formation region of the pattern 40, and these The second electrode pattern 50 extends to intersect the first electrode pattern 40 in the liquid crystal sealing region 35.

In configuring the liquid crystal panel 1 by using the first substrate 10 and the second substrate 20 configured as described above, in this embodiment, the first substrate 10 and the second substrate 20 are sealed with a sealing material ( At the time of bonding through 30, a gap material and a conductive material are blended with the sealing material 30, and the sealing material 30 is a conductive terminal 60 between the first substrate and the conductive terminal 70 between the second substrate. ) Is also formed in the region where they overlap. Therefore, when the sealing material 30 is melted and hardened while applying force to close the gap in the state where the first substrate 10 and the second substrate 20 are sandwiched, the conductive material is the first substrate 10 and the second substrate. The terminal 60 for conducting between the first boards and the terminal 70 for conducting between the second boards are conducted in a pressed or pressed state between the substrates 20.

FIG. 10 is an enlarged plan view of the electrode pattern and the terminal when the first substrate shown in FIG. 8 and the second substrate shown in FIG. 9 are bonded together.

As shown in FIG. 10, when the first substrate 10 and the second substrate 20 are bonded through the seal member 30, the intersection portion between the first electrode pattern 40 and the second electrode pattern 50 is shown. By this, the pixels 5 are formed in a matrix. Therefore, after mounting the flexible board 90 using the anisotropic conductive material etc. to the edge part of the board | substrate side 201 side of the 2nd terminal formation area 21 of the 2nd board | substrate 20, this flexible board | substrate 90 is carried out. When a signal is inputted to the external input terminal 80 through), a scanning signal can be applied to the second electrode pattern 50 from the driver IC 8 and formed on the first substrate 10. The image data is inputted to the first electrode pattern 40 through the driver IC 8 via the second inter-conductive terminal 70, the conductive material, and the first inter-conductive terminal 60. Can be. Therefore, the alignment state of the liquid crystal located between the first electrode pattern 40 and the second electrode pattern 50 in each pixel 5 can be controlled by these image data and the scanning signal. A predetermined image can be displayed.

As described above, conventionally, the first electrode pattern 40 in the vertical direction is subjected to signal input directly from an external input terminal, and the second electrode in the horizontal direction enclosed on both sides so as to avoid the first electrode pattern 40. In the present embodiment, the pattern 50 is inputted via a terminal for conducting board-to-board conduction that extends obliquely. In this embodiment, the second electrode pattern 50 in the horizontal direction is enclosed on both sides to avoid the first electrode pattern 40. As for the signal input directly from the driver IC 8, the signal input is performed by the inter-substrate conduction, so that the first inter-substrate conduction terminal 60 and the second intersubstrate conduction conduct the inter-substrate conduction. The terminal 70 can be formed straight. As described above, since the signal is input to the first electrode pattern 40 in the vertical direction by the inter-substrate conduction via the second substrate 2, the portion where the pattern cannot be extended inclined (second electrode pattern). The pattern located at the innermost part of the 50 is formed to be inclined between the angled part bent near the display area and the angled part of the pattern located at the outermost part of the second electrode pattern 50. It is not necessary to conduct the inter-substrate conduction in the inevitable region (region width indicated by arrow A), and only the second electrode pattern 50 which can shorten the distance between the patterns can be formed in this portion. For this reason, in the 2nd electrode pattern 50, what is necessary is to give a small difference to the length dimension of the linear part 501 between adjacent patterns, and to bend it inclined therefrom, and to incline the part of the 2nd electrode pattern 50 ( 502) The space between each other can be narrowed. Accordingly, as can be seen in FIG. 9, the angle F between the substrate edge 201 and the line F connecting the boundary between the straight line portion 501 and the inclined portion 502 in the second electrode pattern 50 ( As β) is small, a large number of patterns can be formed even in an area in which such a layout constraint is large. Therefore, even when the number of patterns formed in the large area of the constraint on such a layout is increased, it is not necessary to narrow the gap between the first terminal-to-substrate conductive terminal 60 and the second substrate-to-conductive terminal 70. In addition, it is not necessary to narrow the line width of the pattern. Therefore, according to this embodiment, the number of liquid crystal drive electrode patterns can be increased, without reducing reliability and display quality. In other words, if the number of patterns is the same, the portion of the second substrate 20 that cannot be extended to be inclined can be narrowed than before, so that the display area can be expanded in the liquid crystal panel 1 having the same size as the external dimensions. can do. In addition, as long as it is possible to narrow the portion of the second substrate 20 that cannot extend the pattern obliquely than in the related art, the external dimensions of the liquid crystal panel 1 having the same size as the conventional display area can be reduced. have.

[Other Examples]

In the first embodiment, both the first electrode pattern 40 and the second electrode pattern 50 are image data or scanned from the externally mounted driving IC formed on the outside of the liquid crystal panel via the external input terminals 81 and 82. A signal is supplied and applied, and in Example 2, both the first electrode pattern 40 and the second electrode pattern 50 are image data and a scanning signal from the driving IC 8 mounted on the second substrate. Although the configuration was applied, the first electrode pattern may be combined with the first embodiment as long as the first electrode pattern is a signal input using inter-substrate conduction. That is, image data is applied using the inter-substrate conduction from the driving IC in which the first electrode pattern 40 is mounted on the glass substrate or the plastic substrate, and the second electrode pattern 50 is applied from the outside of the liquid crystal panel. Even if it is the structure to which a scanning signal is applied from the external attachment driver IC of the said drive, it is possible.

In addition, although it is the structure which connects the flexible board | substrate 90 with respect to the external input terminals 80, 81, and 82, it is possible even if it is the structure which the other circuit board is connected through a rubber connector etc.

Claims (6)

A first substrate having a first terminal group for conducting, a plurality of first electrode patterns electrically connected to the first terminal group for conducting, and A first external terminal group, a second conductive terminal group electrically connected corresponding to the first external terminal group, and a second external terminal group disposed adjacent to both sides of the first external terminal group And a second substrate having a plurality of second electrode patterns electrically connected to the second external terminal group; And a conductive material containing conductive particles sandwiched between the first substrate and the second substrate, The first conductive terminal group is disposed along a central portion of the sides of the adjacent first substrate, The first substrate and the second substrate are disposed to face each other such that the plurality of first electrode patterns and the plurality of second electrode patterns cross each other; The first conductive terminal group and the second conductive terminal group are electrically connected by the conductive particles between the second external terminal group, The plurality of second electrode patterns extend in a direction inclined from the second external terminal group, and the pitch intervals of the plurality of second electrode patterns in portions extending in the inclined direction are the plurality of second electrodes. It is narrower than the pitch interval of the other part of an electrode pattern, The liquid crystal display device characterized by the above-mentioned. The method of claim 1, The first terminal group for conducting and the second terminal group for conducting are arranged in a straight line toward the side opposite to the side where they are adjacent, the liquid crystal display device. The method of claim 1, Image data is supplied to the plurality of first electrode patterns, and a scan signal is supplied to the plurality of second electrode patterns. A first substrate having a first terminal group for conducting, a plurality of first electrode patterns electrically connected to the first terminal group for conducting, and An external terminal group, a second conductive terminal group, a second substrate having a plurality of second electrode patterns, A driving IC mounted on the second substrate and electrically connected to the external terminal group, the second conductive terminal group, and the plurality of second electrode patterns; And a conductive material containing conductive particles sandwiched between the first substrate and the second substrate, The first conductive terminal group is disposed along a central portion of the sides of the adjacent first substrate, The second conductive terminal is disposed along a central portion of the side of the second substrate adjacent the driver IC, The first substrate and the second substrate are disposed to face each other such that the plurality of first electrode patterns and the plurality of second electrode patterns cross each other, so that the first conductive terminal group and the second conductive terminal group are the same. Electrically connected by the said electroconductive particle between 2nd external terminal groups, The plurality of second electrode patterns extend in a direction inclined from the driving IC, and pitch pitches of the plurality of second electrode patterns in portions extending in the inclined direction are determined by the plurality of second electrode patterns. It is narrower than the pitch interval of another part, The liquid crystal display device characterized by the above-mentioned. The method of claim 4, wherein The first terminal group for conducting and the second terminal group for conducting are arranged in a straight line toward the side opposite to the side where they are adjacent, the liquid crystal display device. The method of claim 4, wherein Image data is supplied to the plurality of first electrode patterns, and a scan signal is supplied to the plurality of second electrode patterns.