JP2001343910A - Clock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease the connection area necessary to input signals from an external circuit board to an integrated circuit, to provide an electrode structure which makes inspection of an electric short circuit between first electrodes or between second electrodes easy and to provide a structure to decrease the connection area between the integrated circuit board and an anisotropic connector. SOLUTION: A liquid crystal layer is sealed between a first board having a first electrode and a second board having a second electrode, and an integrated circuit board is disposed on the first or second board. The input wirings include an input wiring roundabout from the IC input terminal to the inner part of the integrated circuit board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece having a liquid crystal display panel having an integrated circuit substrate on a first substrate or a second substrate as a display. The present invention also relates to an input wiring configuration for externally applying a signal to the integrated circuit substrate. In addition, the present invention relates to a wiring structure of a first electrode provided on a first substrate or a second electrode provided on a second substrate under an integrated circuit substrate.

[0002]

2. Description of the Related Art A conventional liquid crystal display panel used in a timepiece is connected to an external circuit by laminating a conductive portion having conductive particles on an insulating rubber material and a non-conductive portion not containing conductive particles. A structure that directly uses an anisotropic connector, or
The structure was such that a flexible printed circuit (FPC) having conductive wiring in an insulating resin was interposed. Or the first
Although the integrated circuit board is mounted on the second board or the second board, the input wiring for inputting an external signal to the integrated circuit board is directly connected to the IC input terminal of the integrated circuit board. Was to be wired outside. Therefore, when the number of IC input terminals of the integrated circuit board increases, the area occupied by the input wiring increases, and in the case of a timepiece, the display area of the liquid crystal panel decreases.

Further, as compared with a conventional anisotropic connector or a structure in which a connection with an external circuit board is made using a flexible printed board, an integrated circuit board is mounted on a first board or a second board. In the mounting method, the width of the wiring or the gap between the wirings is reduced in order to reduce the area of the integrated circuit substrate, and the occurrence of disconnection or electrical short-circuit is increased. Further, since the input terminals of the first electrode and the second electrode are close to each other, disconnection of the first electrode, electrical short-circuit, or disconnection of the second electrode before mounting the integrated circuit.
It has been difficult to inspect for electrical shorts.

Further, an integrated circuit substrate is mounted on the first substrate or the second substrate, and is connected to an external circuit substrate provided other than the liquid crystal display panel using an anisotropic connector. Although the mounting area can be reduced, there is a drawback that an electrical short circuit occurs due to the contact between the integrated circuit board and the conductive portion forming the anisotropic connector. Therefore, it is difficult to bring the anisotropic connector and the integrated circuit board close to each other, resulting in an increase in area.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to reduce a connection area required for inputting a signal from an external circuit board to an integrated circuit. Furthermore, an electrode structure that facilitates inspection of an electrical short circuit between the first electrode and the second electrode and an electrode structure that facilitates inspection of disconnection of the first electrode or the second electrode are proposed. thing. Another object of the present invention is to propose a structure for reducing a connection area between an integrated circuit board and an anisotropic connector.

[0006]

In order to achieve the above object, the present invention employs the following structure.

[0007] A timepiece according to the present invention has a first electrode having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode facing each other with a liquid crystal layer therebetween, and an integrated circuit substrate for applying a predetermined signal of the liquid crystal layer is formed on the first substrate or The integrated circuit substrate having on at least one of a second substrate, the integrated circuit substrate having an input terminal for applying an input signal from a source other than the first substrate or the second substrate, And the input terminal are connected by an input wiring and an IC input terminal, and at least a part of the input wiring has an IC lower input wiring bypassing from the IC input terminal to the inside of the integrated circuit board. LCD connected to input terminal via external IC input wiring outside It characterized by having a display panel.

[0008] The timepiece of the present invention comprises a first timepiece having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode facing each other with a liquid crystal layer therebetween, and an integrated circuit substrate for applying a predetermined signal of the liquid crystal layer is formed on the first substrate or The first electrode and the second electrode each have a connection portion for connecting to the integrated circuit substrate, the connection portion being provided on at least one of the second substrates;
At least one of the first electrode and the second electrode is
The liquid crystal display panel includes a wiring block part extending further inside the integrated circuit substrate than the connection part.

A timepiece according to the present invention has a first electrode having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode which face each other with a liquid crystal layer therebetween, and an integrated circuit substrate for applying a predetermined signal of the liquid crystal layer is formed on the first substrate or The integrated circuit substrate having on at least one of a second substrate, the integrated circuit substrate having an input terminal for applying an input signal from a source other than the first substrate or the second substrate, And the input terminal are connected by an input wiring and an IC input terminal, and at least a part of the input wiring has an IC lower input wiring bypassing from the IC input terminal to the inside of the integrated circuit board. Connected to the input terminal via the external input wiring outside the IC, The electrode and the second electrode have a connection portion for connecting to the integrated circuit substrate, and at least one of the first electrode and the second electrode is a wiring extending further inside the integrated circuit substrate than the connection portion. The liquid crystal display panel includes a block portion.

In the timepiece of the present invention, the first electrode and the second electrode constituting the liquid crystal display panel have a connection portion for connecting to an integrated circuit substrate, and at least one of the first electrode and the second electrode. One has a wiring block portion extending further inside the integrated circuit substrate than the connection portion, and in the wiring block portion, the odd-numbered first electrode and the even-numbered first electrode, or the odd-numbered second electrode. And an even-numbered second electrode terminal portion has at least two types of wiring block portions under the integrated circuit substrate.

A timepiece according to the present invention has a connection part connected to a second electrode and a connection part connected to a part of the first electrode on one side of the integrated circuit substrate, and the part of the first electrode is connected to the connection part. The remaining first portion is connected to the side of the integrated circuit substrate
A liquid crystal display panel characterized by having a connection portion connected to the above-mentioned electrode.

A timepiece according to the present invention has a connection part connected to a second electrode and a connection part connected to a part of the first electrode on one side of the integrated circuit substrate, and the part of the first electrode is connected to the connection part. The remaining first portion is connected to the side of the integrated circuit substrate
The connection part connected to the second electrode is connected to the second electrode, and the connection part connected to the second electrode is concentrated in the wiring block part below the integrated circuit board, and is connected to the second electrode adjacent to the connection part of the first electrode. The connection portion of the electrode has a liquid crystal display panel having a wiring block portion that is disposed so as to extend to a portion close to the connection portion of another second electrode.

The first electrode and the second electrode constituting the liquid crystal display panel of the timepiece of the present invention have a connection portion for connecting to an integrated circuit substrate, and at least one of the first electrode and the second electrode. Has a wiring block portion extending further inside the integrated circuit substrate than the connection portion, wherein the wiring block portion includes an odd-numbered first electrode and an even-numbered first electrode, or an odd-numbered second electrode. The electrode and the even-numbered second electrode terminal portion have at least two types of wiring block portions under the integrated circuit substrate.

The connection between an input terminal for applying an input signal other than the first substrate or the second substrate constituting the liquid crystal display panel of the timepiece of the present invention and an external circuit substrate for generating the input signal is made of an insulating material. It is an anisotropic connector in which a conductive portion having conductive particles in a rubber material and a non-conductive portion not including conductive particles are laminated.

The connection between an input terminal for applying an input signal from other than the first substrate or the second substrate constituting the liquid crystal display panel of the timepiece of the present invention and an external circuit substrate for generating the input signal is made of an insulating material. It is an anisotropic connector having a conductive wire inside or around a rubber material.

The integrated circuit board constituting the integrated circuit board provided on the liquid crystal display panel constituting the timepiece according to the present invention has an insulating short circuit preventing surface on the surface other than the surface on which the IC output terminals of the integrated circuit board are formed. It is characterized by having a layer.

[0017] Between the integrated circuit board provided on the liquid crystal display panel constituting the timepiece of the present invention and the anisotropic connector,
It is characterized by having an isolation holding part.

Between the integrated circuit board provided on the liquid crystal display panel constituting the timepiece of the present invention and the anisotropic connector,
It has an isolating and holding portion, and further has a fixing resin between the integrated circuit board and the isolating and holding portion.

The isolation holding section used in the timepiece of the present invention is characterized by being in contact with both the first substrate and the second substrate.

The timepiece of the present invention has a plurality of first electrodes and a plurality of second electrodes, and further applies a predetermined signal to the liquid crystal layer via the first electrode or the second electrode. For this purpose, a predetermined signal is applied to a plurality of first electrodes or a plurality of second electrodes by mounting an integrated circuit substrate on a first substrate or a second substrate by a chip-on-glass mounting method. In this case, the number of connections with an external circuit board other than the first board or the second board can be reduced as compared with the case of using a conventional anisotropic connector or using a flexible printed board. The connection resistance and the connection area can be reduced.

Further, the integrated circuit board is provided with an input terminal for applying an input signal from a source other than the first board or the second board, and the integrated circuit board and the input terminal are connected by an input wiring and an IC input terminal. And at least a part of the input wiring,
IC that detours from the IC input terminal to the inside of the integrated circuit board
It has a lower input wiring, and is configured to be connected to an input terminal via an external input wiring outside the IC provided outside the integrated circuit board. Since the wiring can be provided, even if the wiring is miniaturized, the wiring can be protected by the integrated circuit substrate. Therefore, there is no disconnection, and an electrical short circuit between the wirings due to dust or the like can be prevented. Furthermore, it is possible to arrange wiring from a plurality of external circuit boards outside the integrated circuit without increasing the area of the integrated circuit board composed of the integrated circuit board, and to efficiently use the connection area with the external circuit board. it can.

Further, an integrated circuit substrate for applying a predetermined signal to the liquid crystal layer is provided on at least one of the first substrate and the second substrate, and the first electrode and the second electrode are integrated. The integrated circuit board has a connection portion for connecting to the circuit board, and at least one of the first electrode and the second electrode is provided with a wiring block portion extending further inside the integrated circuit board than the connection portion. When inspecting the first electrode or the second electrode for disconnection or electrical short before mounting, the signal is applied to the wiring block without applying a signal to the connection between the integrated circuit board and each electrode. It is possible to prevent the electrode from being damaged at the time of inspection, or to prevent the transfer of dirt or the like from being deteriorated. Furthermore, by providing the wiring block portion of the first electrode and the second electrode at a position apart from each other, the first electrode and the second electrode can be connected at the time of inspection.
Electrical short circuit when a signal is applied to the first electrode can be prevented.

Further, the first electrode and the second electrode constituting the liquid crystal display panel have a connection portion for connecting to an integrated circuit substrate, and at least one of the first electrode and the second electrode has a connection portion. A wiring block extending further inside the integrated circuit substrate, wherein the wiring block includes an odd-numbered first electrode and an even-numbered first electrode, or an odd-numbered second electrode and an even-numbered electrode; By providing at least two types of wiring block portions under the integrated circuit substrate, the second electrode terminal portion can simultaneously perform an electrical short circuit and disconnection between the first electrodes or an electrical short circuit and disconnection between the second electrodes at the same time. Inspection can be performed, and it is possible to prevent the occurrence of scratches on the electrodes at the time of inspection or the deterioration of transfer of dirt or the like.

The connection between an input terminal for applying an input signal from a source other than the first board or the second board from the external circuit board and the external circuit board for generating the input signal is performed by using an insulating rubber material with conductive particles. By using an anisotropic connector formed by laminating a conductive part having a conductive part and a non-conductive part containing no conductive particles, the integrated circuit board is mounted on a single board, and the board is damaged by impact. This can be prevented by utilizing the elasticity of the anisotropic connector. Conventionally, an anisotropic connector is also used to connect a liquid crystal display panel to an external circuit board. However, this is particularly effective when the integrated circuit board is provided on the first board or the second board. is there.

The connection between an input terminal for applying an input signal from an external circuit board other than the first board or the second board from the external circuit board and the external circuit board for generating the input signal is made of an external circuit board made of an insulating rubber material. By providing the conductive wires in a direction substantially perpendicular to the substrate and the integrated circuit board, the resistance of the anisotropic connector can be greatly reduced. In addition, by using an anisotropic connector with a structure in which conductive wires are wound around the insulating rubber material at regular intervals, it is possible to reduce the thickness of the anisotropic connector, The conductive wire does not separate from the external circuit board and the integrated circuit board, and the reliability is improved.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> A timepiece according to the best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a schematic plan view of a timepiece according to a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view taken along line AA of the timepiece shown in FIG. FIG.
FIG. 2 is a plan view showing a liquid crystal display panel used for the timepiece shown in FIG. FIG. 4 is an enlarged plan view showing a part of the liquid crystal display panel shown in FIG. FIG. 5 is a cross-sectional view of the liquid crystal display panel shown in FIG. 4 taken along line BB. Below, Figure 1
The first embodiment will be described with reference to FIG. 2, FIG. 2, FIG. 3, FIG. 4, and FIG.

In the timepiece, a first electrode 13 made of a transparent conductive film is provided on a first substrate 5 made of a transparent substrate. The first electrode 13 is a stripe-shaped row electrode pattern that is substantially parallel from the first first electrode 41 to the n-th first electrode 43 in the display area. And an m-th first electrode 42 and an n-th first electrode 43 are shown.

Further, a second substrate 5 made of a transparent conductive film is provided on a second substrate 5 facing the first substrate 1 with a predetermined gap.
Are provided. The second electrode 14 is 1 in the display area.
A stripe-shaped column electrode pattern that is substantially parallel from the second electrode 45 to the q-th second electrode 47;
As a representative, a first second electrode 45, a p-th second electrode 46, and a q-th second electrode 47 are shown.

An n * q dot matrix type liquid crystal display panel comprising n first electrodes 13 and q second electrodes 14 is obtained. In addition, a sealing material 9 is provided around the display area to seal the liquid crystal layer 7. Further, a part of the sealing material 9 has a sealing portion (not shown), and the liquid crystal layer 7 is sealed with a sealing material (not shown) after injection. The liquid crystal layer 7 has a thickness of 210
A super twisted nematic (STN) liquid crystal having a twist angle of any one of degrees to 260 degrees is adopted, and an alignment for aligning the liquid crystal layer 7 in a predetermined direction on the first substrate 1 and the second substrate 5. It has a membrane (not shown).

The second electrode 14 provided on the second substrate 6 has a first anisotropic conductive seal portion 51 and a second anisotropic conductive seal portion 52 provided around the display area. To connect to the second electrode IC connection portion 65 on the first substrate 5. Since the conductive particles 67 are mixed with the insulating resin in the anisotropic conductive seal portion, the second electrode 14 can be connected to the second electrode IC connection portion 65 via the conductive particles 67. Also,
The first electrode 13 is a first electrode IC at the outer periphery of the display area.
Connect to connection section 55. As described above, the first electrode 1
3 and the second electrode 14 are formed on a first substrate 5
Of the second electrode IC connection portion 55 and the second electrode IC connection portion 65
Can be terminated. The IC connection parts 55 and 65
Is an integrated circuit board (IC) 11 for applying a predetermined voltage waveform to each pixel portion by a signal from the external circuit board 16
And connected by chip-on-glass.

The integrated circuit board 11 is connected to the external circuit board 1
IC input terminals 77 and 78 for inputting signals from
Having. The integrated circuit substrate 11 is provided on one side of the first substrate 5, and the second electrode 14 and the anisotropic conductive seal 5
As for the wirings 1 and 52, the first 45th to the pth 46 are arranged on the left side of the drawing, and the (p + 1) th to the qth 47 are arranged on the right side of the drawing. By arranging the same number on the left and right, the first electrode IC connection portions 55 provided on the integrated circuit board 11 can be equally allocated on the left and right, so that the circuit arrangement balance is improved. Further, the first electrode IC connection portion 55 connected to the first electrode 13 is provided between the second electrode IC connection portions 65 provided on the left and right of the drawing, so that
Circuits can be efficiently arranged.

Further, the integrated circuit substrate 11 and the first electrode I
The C connection section 55 and the second electrode IC connection section 65 will be described in detail with reference to FIG. The second electrode IC connection portions 65 are disposed on the left and right of the integrated circuit substrate 71, and the first electrode IC
A second output terminal is provided near the first output terminal connected to the connection section. Therefore, the second electrode I
The C connection portion has a second wiring block 85 extending from the second output terminal along the outer periphery of the integrated circuit substrate 71. The second wiring block 85 is separated from the first wiring blocks 86 and 87 extending from the first electrode IC connection portion to the inside of the integrated circuit board 11, and the wiring in the second wiring block is mutually connected. Adopt a close arrangement.

Further, the first electrode IC connection portion 55 is disposed at the center of the integrated circuit board 11. The integrated circuit board 11 has a first output terminal 75 for connecting to the first electrode IC connection portion 55, and a part of the first output terminal 75 is close to the second output terminal 76. First electrode IC connection part 55
Has first wiring blocks 87 and 86 extending in the direction of the IC input terminals 82 of the integrated circuit board 11. Further, the first wiring block has a first odd-numbered wiring block 86 and a first even-numbered wiring block 87 connected to the odd-numbered first electrodes. The first odd-numbered wiring block 86 and the first even-numbered wiring block 87 have different lengths extending from the first output terminals 75 of the integrated circuit board 11, and the first odd-numbered wiring block 86 is short and has a first length. Since the even-numbered wiring block 87 is long, the evaluation of the electrical short circuit between the first
Odd-numbered wiring block 86 and first even-numbered wiring block 87
Are independently connected, it is possible to easily evaluate the integrated circuit board 11 before mounting it.

Further, by separating the first wiring blocks 86 and 87 and the second wiring block 85 and concentrating the electrodes in each wiring block, the integrated circuit board 11 is formed.
Before mounting, the first wiring block and the second wiring block can be easily electrically separated and connected in a test of the display quality of the liquid crystal display panel. Providing a first wiring block and a second wiring block on the same, and providing a first odd-numbered wiring block and a first even-numbered wiring block are effective for stabilizing the quality of the liquid crystal display panel and reducing the cost. It is.

Next, an input section for applying a signal from an external circuit board of the integrated circuit board 11 will be described. The integrated circuit board 11 has a plurality of IC input terminals. The IC input terminal is connected to the IC input wiring provided on the first substrate 5 by the anisotropic conductive film material 9 and further to the substrate input terminal for connection with an external circuit board. The IC input terminal has a limit on the magnitude of the connection resistance from the external circuit to the IC input terminal. The input terminal A77 is connected to a substrate input terminal A79 having a large area and a short-length IC input wiring to reduce the connection resistance.

Since a relatively large connection resistance is allowed for the input terminal B78, the substrate input terminal B80 having the same area as the other terminals is connected, and the IC input wiring B73 is connected. According to the present invention, it is possible to provide an IC input terminal next to a portion where the area of the substrate input terminal is large, and furthermore, a part of the IC input wiring from the IC input terminal to the substrate input terminal is integrated circuit board 11 The structure provided under the is adopted. In addition, the IC lower input wirings 84 and 88 extending outward from the lower side of the integrated circuit substrate 11 of the IC input wiring.
Are provided substantially on the same side as the side on which the second electrode IC connection portion is provided. In the first embodiment, the integrated circuit substrate 1
1 employs an IC lower-left input terminal 84 located on the left side and an IC lower-right input terminal 88 located on the right side.

By adopting the above structure, even when the anisotropic connector 12 is arranged near the integrated circuit board 11 as shown in FIG. Since the wiring does not cause an electric short circuit, the length required for connecting the first substrate 5 to the external circuit substrate can be reduced. A timepiece is an effective structure because it is thin and small, and it is necessary to increase the display area of the liquid crystal display panel to present a lot of information and eliminate design constraints.

As an embodiment in which the above liquid crystal display panel is used for a timepiece, a light source 15 made of an electroluminescent (EL) element is provided on the back cover 3 side of the liquid crystal display panel.
An external circuit board 16 having a signal to be applied to an integrated circuit board (IC) 11 mounted on a liquid crystal display panel by a chip-on-glass method or a power supply circuit, a transmission circuit and the like is provided.
A battery 17 is connected as an energy source of the external circuit board 16. The connection between the external circuit board 16 and the liquid crystal display panel is performed by the anisotropic connector 12 in which conductive portions and insulating portions are alternately laminated, and is held by the module frame 25.
The external circuit board 16 has a communication sensor circuit 22 and a communication sensor 21. As the communication sensor 21, an infrared communication sensor having an infrared LED and an infrared sensor is employed.

Further, on the windshield 2 side of the first polarizing plate 8, there is provided a parting plate 24, and on the communication sensor 21, a sensor window 2 for shielding and communicating with the communication sensor 21.
3 is provided. With the above configuration, a timepiece module is obtained.
The watch module is arranged on the watch case 1, the windshield 2, and the back cover 3. The timepiece has an adjustment dial 31 for turning on / off the display content of the liquid crystal display panel, changing the display content, correcting the time, or turning on the light source. The liquid crystal panel makes it possible to present the display contents 33 to the watch observer.

<Second Embodiment> Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 6 is an enlarged plan view showing the vicinity of the integrated circuit substrate. A feature of the second embodiment is that a second electrode I provided on an integrated circuit substrate is provided.
The point is that a part of the C connection part is provided on the side where the first electrode IC connection part is provided. Hereinafter, the second embodiment will be described with reference to FIG. The same contents of the liquid crystal display panel as in the first embodiment will be described using the same reference numerals and names.

The first electrode 13 and the second electrode 14 can be terminated to a first electrode IC connection portion 55 and a second electrode IC connection portion 65 provided on the first substrate 5. . The IC connection sections 55 and 65 are connected to an integrated circuit board (IC) 11 for applying a predetermined voltage waveform to each pixel section by a signal from an external circuit board by chip-on-glass.

The integrated circuit board 11 is an external circuit board 1
IC input terminals 77 and 78 for inputting signals from
Having. Second electrode 14 and anisotropic conductive seal portion 5
By arranging the same number of wiring lines to the left and right, the first electrode IC connection portions 55 provided on the integrated circuit substrate 11 can be equally allocated to the left and right, so that the circuit arrangement is well balanced. Become. Further, the first electrode IC connection portion 55 connected to the first electrode 13 is provided between the second electrode IC connection portions 65 provided on the left and right of the drawing, so that the circuit can be efficiently arranged. . In addition, a part of the second electrode IC connection portion 65 is provided on the side of the first electrode IC connection portion 55 in order to secure an area for providing the IC lower input wiring of the integrated circuit substrate 11.

Therefore, the second electrode IC connection portion 65 provided on the same side as the first electrode IC connection portion 55 has the second electrode IC connection portion provided on the other side in a direction approaching the second electrode IC connection portion. And a second wiring block 85 extending from the second output terminal. The second wiring block 85 is a first electrode IC.
The wiring in the second wiring block is spaced apart from the first wiring block 90 extending from the connection portion to the inside of the integrated circuit board 11, and the wiring in the second wiring block adopts an arrangement close to each other. The wirings in the first wiring block are also arranged close to each other.

By separating the first wiring block 90 and the second wiring block 85 and concentrating the electrodes in each wiring block, the display quality of the liquid crystal display panel can be improved before the integrated circuit board 11 is mounted. In this test, the first wiring block and the second wiring block can be easily electrically separated from each other and connected to each other. Providing the blocks is effective in stabilizing the quality of the liquid crystal display panel and reducing the cost.

Next, the input section for applying a signal from the external circuit board of the integrated circuit board 11 will be described. The integrated circuit board 11 has a plurality of IC input terminals. The IC input terminal is connected to the IC input wiring provided on the first substrate 5 by the anisotropic conductive film material 9 and further to the substrate input terminal for connection with an external circuit board. The IC input terminal has a limit on the magnitude of the connection resistance from the external circuit to the IC input terminal. The input terminal A77 is connected to a substrate input terminal A79 having a large area and a short-length IC input wiring to reduce the connection resistance.

Since a relatively large connection resistance is allowed for the input terminal B78, the substrate input terminal B80 having the same area as the other terminals is connected, and the IC input wiring B73 is connected. According to the present invention, it is possible to provide an IC input terminal next to a portion where the area of the substrate input terminal is large, and furthermore, a part of the IC input wiring from the IC input terminal to the substrate input terminal is integrated circuit board 11 The structure provided under the is adopted. In addition, the IC lower input wirings 84 and 88 extending outward from the lower side of the integrated circuit substrate 11 of the IC input wiring.
Are provided substantially on the same side as the side on which the second electrode IC connection portion is provided. In the twelfth embodiment, an IC lower left input terminal 84 located on the left side of the integrated circuit substrate 11 and an IC lower right input terminal 88 located on the right side are employed.

By adopting the above configuration, the first embodiment and the second embodiment can be changed according to the length of the integrated circuit substrate 11 and the numbers of the first electrode IC connection portions and the second electrode IC connection portions.
By selecting the embodiment, the optimal arrangement of the IC input wiring and the IC input terminal can be obtained.

<Third Embodiment> Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. The feature of the third embodiment is that an insulating film is provided on the surface of the integrated circuit board other than the IC input terminal, and a structure for preventing an electrical short circuit between the side wall of the integrated circuit board and the anisotropic connector is adopted. is there. FIG. 7 is an enlarged sectional view of a portion of the liquid crystal display panel on which the integrated circuit substrate is provided and the periphery thereof. less than,
A third embodiment will be described with reference to FIG. The same contents of the liquid crystal display panel as in the first embodiment will be described using the same reference numerals and names.

The first electrode 13 and the second electrode 14 can terminate at a first electrode IC connection portion and a second electrode IC connection portion provided on the first substrate 5. The IC connection unit is an integrated circuit board (IC) 11 for applying a predetermined voltage waveform to each pixel unit according to a signal from an external circuit board.
And connected by chip-on-glass.

The structure of the liquid crystal display panel is almost the same as that of the first embodiment shown in FIG. When the conductive portion of the anisotropic connector is connected to the side wall of the integrated circuit board 11,
In this case, an erroneous signal is applied to the integrated circuit board, and the integrated circuit board malfunctions. Therefore, in the third embodiment, the integrated circuit substrate 11
An insulating film 96 is provided on the side wall of. As the insulating film 96, in order to use a silicon substrate as the integrated circuit substrate 11, any one of a silicon oxide film for oxidizing the silicon substrate, an insulating film formed by a sputtering method, and an organic insulating film applied by an inkjet method is provided. I have.

Alternatively, an anisotropic conductive film for connecting the electrodes on the first substrate and the terminals on the integrated circuit substrate 11 is temporarily fixed to the IC input terminal portion where the anisotropic connector 12 is provided. After mounting the substrate 11 by the COG method, an insulating film is formed around the integrated circuit substrate 11 by a vacuum film forming method typified by a sputtering method using a metal mask having an opening around the integrated circuit substrate 11. afterwards,
By removing the anisotropic conductive film at the IC input terminal portion of the anisotropic connector 12, the integrated circuit board 11 is removed.
An insulating film 96 can be provided on a surface other than the surface facing the first substrate 5. The insulating film on the IC input terminal has no problem in electrical connection by the anisotropic connector 12 by removing the anisotropic conductive film.

By employing the above structure, the insulating film 96 is provided around the integrated circuit board 11, so that malfunction of the integrated circuit board 11 due to contact between the anisotropic connector 12 and the integrated circuit board 11 is prevented. Can be.

<Fourth Embodiment> Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings. The feature of the fourth embodiment is a structure in which light around an integrated circuit board is shielded from an IC, and a fixing resin is provided to fix an isolation holding portion for preventing distortion of an anisotropic connector. It is to adopt. FIG. 8 is an enlarged cross-sectional view of a portion of the liquid crystal display panel where the integrated circuit substrate is provided and the periphery thereof. Hereinafter, a fourth embodiment will be described with reference to FIG. The same contents of the liquid crystal display panel as in the first embodiment will be described using the same reference numerals and names.

The first electrode 13 and the second electrode 14 can terminate at a first electrode IC connection portion and a second electrode IC connection portion provided on the first substrate 5. The IC connection section is an integrated circuit board (IC) for applying a predetermined voltage waveform to each pixel section based on a signal from the external circuit board 16.
11 and chip-on-glass.

The structure of the liquid crystal display panel is almost the same as that of the first embodiment shown in FIG. When the conductive portion of the anisotropic connector is connected to the side wall of the integrated circuit board 11,
In this case, an erroneous signal is applied to the integrated circuit board, and the integrated circuit board malfunctions. Further, since the anisotropic connector 12 bends between the external circuit board 16 and the first substrate 5, the contact area between the conductive portion of the anisotropic connector and each terminal is reduced, or the compressive strength of the conductive portion is reduced. Therefore, the connection resistance increases and a malfunction of the integrated circuit substrate 11 occurs.

For this reason, in the fourth embodiment, an isolation holding portion 97 made of plastic is provided between the integrated circuit board 11 and the anisotropic connector 12. The isolation holding section 97 is fixed by a fixing resin 98 provided around the integrated circuit board 11 and a reinforcing resin 99 provided on the second substrate 6. The fixing resin 98 is filled by a fixing resin injection hole 100 provided in a part of the isolation holding portion 97. A part of the isolation holding portion 97 extends to the external circuit board groove 101 provided on the external circuit board 16 and holds one side wall of the anisotropic connector 12. The other side wall of the anisotropic connector 12 is held by a module frame 25 that holds a liquid crystal display panel or the like.

By adopting the above configuration, the anisotropic connector 12 is vertically held between the first substrate 5 and the external circuit board 16 so that the compressive force of the anisotropic Since the transmission can be performed in the direction of the first substrate 5 and the external circuit board 16, the connection resistance between each terminal provided on the first substrate 5 and the terminal provided on the external circuit board 16 can be reduced, stabilized, and the external impact can be reduced. Can be stabilized. Further, contact between the conductive portion of the anisotropic connector 12 and the integrated circuit board 11 can be prevented.

Further, by coloring the fixing resin 98, irradiation of light to the integrated circuit board 11 can be blocked, so that an increase in power consumption due to light from the integrated circuit board 11 and a malfunction are prevented. be able to. Further, if the isolation holding section 97 also uses a colored resin, it is more effective in shielding light.

[0059]

As is clear from the above description, the timepiece of the present invention has a plurality of first electrodes and a plurality of second electrodes, and further includes a first electrode or a second electrode. The integrated circuit substrate is mounted on the first substrate or the second substrate by a chip-on-glass mounting method to apply a predetermined signal to the liquid crystal layer through the first electrode or the plurality of first electrodes. When a predetermined signal is applied to the second electrode, the first electrode is compared with a case where a conventional anisotropic connector is used or a case where a flexible printed circuit board is used.
Since the number of connections to the external circuit board other than the first substrate or the second substrate can be reduced, the connection resistance and the connection area can be reduced.

Further, the integrated circuit board is provided with an input terminal for applying an input signal from a source other than the first board or the second board, and the integrated circuit board is connected to the input terminal by an input wiring and an IC input terminal. And at least a part of the input wiring,
IC that detours from the IC input terminal to the inside of the integrated circuit board
It has a lower input wiring, and is configured to be connected to an input terminal via an external input wiring outside the IC provided outside the integrated circuit board. Since the wiring can be provided, even if the wiring is miniaturized, the wiring can be protected by the integrated circuit substrate. Therefore, there is no disconnection, and an electrical short circuit between the wirings due to dust or the like can be prevented. Furthermore, it is possible to arrange wiring from a plurality of external circuit boards outside the integrated circuit without increasing the area of the integrated circuit board composed of the integrated circuit board, and to efficiently use the connection area with the external circuit board. it can.

An integrated circuit substrate for applying a predetermined signal to the liquid crystal layer is provided on at least one of the first substrate and the second substrate, and the first electrode and the second electrode are integrated. The integrated circuit board has a connection portion for connecting to the circuit board, and at least one of the first electrode and the second electrode is provided with a wiring block portion extending further inside the integrated circuit board than the connection portion. When inspecting the first electrode or the second electrode for disconnection or electrical short before mounting, the signal is applied to the wiring block without applying a signal to the connection between the integrated circuit board and each electrode. It is possible to prevent the electrode from being damaged at the time of inspection, or to prevent the transfer of dirt or the like from being deteriorated. Furthermore, by providing the wiring block portion of the first electrode and the second electrode at a position apart from each other, the first electrode and the second electrode can be connected at the time of inspection.
Electrical short circuit when a signal is applied to the first electrode can be prevented.

Further, the first electrode and the second electrode constituting the liquid crystal display panel are provided with a connecting portion for connecting to an integrated circuit substrate, and at least one of the first electrode and the second electrode is connected to the connecting portion. A wiring block extending further inside the integrated circuit substrate, wherein the wiring block includes an odd-numbered first electrode and an even-numbered first electrode, or an odd-numbered second electrode and an even-numbered electrode; By providing at least two types of wiring block portions under the integrated circuit substrate, the second electrode terminal portion can simultaneously perform an electrical short circuit and disconnection between the first electrodes or an electrical short circuit and disconnection between the second electrodes at the same time. Inspection can be performed, and it is possible to prevent the occurrence of scratches on the electrodes at the time of inspection or the deterioration of transfer of dirt or the like.

The connection between an input terminal for applying an input signal from a source other than the first board or the second board from the external circuit board and the external circuit board for generating the input signal is made of an insulating rubber material with conductive particles. By using an anisotropic connector formed by laminating a conductive part having a conductive part and a non-conductive part containing no conductive particles, the integrated circuit board is mounted on a single board, and the board is damaged by impact. This can be prevented by utilizing the elasticity of the anisotropic connector. Conventionally, an anisotropic connector is also used to connect a liquid crystal display panel to an external circuit board. However, this is particularly effective when the integrated circuit board is provided on the first board or the second board. is there.

The connection between an input terminal for applying an input signal from a circuit other than the first substrate or the second substrate from the external circuit board and the external circuit board for generating the input signal is made of an external circuit board made of an insulating rubber material. By providing the conductive wires in a direction substantially perpendicular to the substrate and the integrated circuit board, the resistance of the anisotropic connector can be greatly reduced. In addition, by using an anisotropic connector with a structure in which conductive wires are wound around the insulating rubber material at regular intervals, it is possible to reduce the thickness of the anisotropic connector, The conductive wire does not separate from the external circuit board and the integrated circuit board, and the reliability is improved.

Further, when a polarizing plate is provided on at least one of the first substrate and the second substrate, a bright or brilliant display becomes possible by using a reflective polarizing plate as the polarizing plate. Thus, the design of the watch can be improved.

The present invention is naturally effective in a color liquid crystal display panel provided with a color filter layer on the first substrate or the second substrate.

Although the present invention has been described with reference to an embodiment in which a retardation film or the like is not provided between the first substrate or the second substrate and the polarizing plate, the effect of the present invention can be obtained by using a retardation film. It is valid. Further, the effects of the present invention are naturally effective even if the constituent members of the dot matrix type liquid crystal display panel used in portable information devices and the like are used.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a timepiece according to the present invention.

FIG. 2 is a schematic sectional view of the timepiece of the present invention.

FIG. 3 is a plan view of the liquid crystal display panel used in the timepiece according to the first embodiment of the present invention.

FIG. 4 is an enlarged plan view of a part of a liquid crystal display panel used for a timepiece according to the first embodiment of the present invention.

FIG. 5 is an enlarged sectional view of a part of a liquid crystal display panel used for a timepiece according to the first embodiment of the present invention.

FIG. 6 is an enlarged plan view of a part of a liquid crystal display panel used in a timepiece according to a second embodiment of the present invention.

FIG. 7 is an enlarged sectional view of a part of a liquid crystal display panel used in a timepiece according to a third embodiment of the present invention.

FIG. 8 is an enlarged sectional view of a part of a liquid crystal display panel used in a timepiece according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Watch case 2 Windshield 3 Back cover 5 1st substrate 6 2nd substrate 7 Liquid crystal layer 8 1st polarizing plate 9 2nd polarizing plate 10 Sealing material 11 Integrated circuit board 12 Anisotropic connector 13 First Electrode 14 Second electrode 15 Light source 16 External circuit board 17 Battery 21 Communication sensor 51 First anisotropic conductive seal part 55 First electrode IC connection part 65 Second electrode IC connection part 67 Conductive particle 75 First output terminal 76 Second output terminal 77 IC input terminal A 96 Insulating layer 97 Separation holding section 98 Fixed resin 99 Reinforced resin 100 Fixed resin injection hole 101 External circuit board groove

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09F 9/00 346 G09F 9/00 346Z 362 362 362 F-term (Reference) 2F002 AA01 AA03 AA11 AB02 AB03 AB04 AC01 AC02 EA01 EF01 EF02 2H089 HA40 JA10 KA17 QA11 TA03 TA07 2H092 GA41 GA43 GA44 GA47 GA49 GA60 HA28 NA16 PA06 5C094 AA15 BA43 CA19 EA04 EA07 EC01 FB12 HA03 5G435 AA18 EE40 EE45 LL10

Claims (13)

[Claims] A first substrate having a first electrode; a second substrate having a first electrode;
A first substrate and a second substrate facing each other with a predetermined gap provided therebetween, and a liquid crystal layer sealed in the gap between the first substrate and the second substrate; A pixel portion is formed by an intersection of a first electrode and a second electrode facing each other with a layer interposed therebetween, and an integrated circuit substrate for applying a predetermined signal to the liquid crystal layer is formed by at least one of the first substrate and the second substrate. The integrated circuit substrate has an input terminal for applying an input signal from a substrate other than the first substrate or the second substrate, and the integrated circuit substrate and the input terminal are connected to each other. A wiring connected to an IC input terminal, at least a part of the input wiring has an IC lower input wiring that detours from the IC input terminal to the inside of the integrated circuit board, and further includes an IC outside the integrated circuit board outside the integrated circuit board Has a liquid crystal display panel connected to input terminals via input wiring Watch characterized by Rukoto. A first substrate having a first electrode; a second substrate having a first electrode;
A first substrate and a second substrate facing each other with a predetermined gap provided therebetween, and a liquid crystal layer sealed in the gap between the first substrate and the second substrate; A pixel portion is formed by an intersection of a first electrode and a second electrode facing each other with a layer interposed therebetween, and an integrated circuit substrate for applying a predetermined signal to the liquid crystal layer is formed by at least one of the first substrate and the second substrate. And a first electrode and a second electrode each having a connection portion for connecting to the integrated circuit substrate, wherein at least one of the first electrode and the second electrode has: A timepiece having a liquid crystal display panel including a wiring block portion extending further inside a integrated circuit substrate than a connection portion. 3. A first substrate having a first electrode and a second substrate having a first electrode.
A first substrate and a second substrate facing each other with a predetermined gap provided therebetween, and a liquid crystal layer sealed in the gap between the first substrate and the second substrate; A pixel portion is formed by an intersection of a first electrode and a second electrode facing each other with a layer interposed therebetween, and an integrated circuit substrate for applying a predetermined signal to the liquid crystal layer is formed by at least one of the first substrate and the second substrate. The integrated circuit substrate has an input terminal for applying an input signal from a substrate other than the first substrate or the second substrate, and the integrated circuit substrate and the input terminal are connected to each other. A wiring connected to an IC input terminal, at least a part of the input wiring has an IC lower input wiring that detours from the IC input terminal to the inside of the integrated circuit board, and further includes an IC outside the integrated circuit board outside the integrated circuit board Connect to the input terminal via the input wiring,
The first electrode and the second electrode have a connection portion for connecting to the integrated circuit substrate, and at least one of the first electrode and the second electrode is further inside the integrated circuit substrate than the connection portion. A timepiece having a liquid crystal display panel comprising a wiring block extending. 4. The first electrode and the second electrode each have a connection portion for connecting to the integrated circuit substrate, and at least one of the first electrode and the second electrode is integrated more than the connection portion. Having a wiring block extending inside the circuit board,
In the wiring block section, the odd-numbered first electrode and the even-numbered first electrode, or the odd-numbered second electrode and the even-numbered second electrode terminal section are formed of at least two kinds of electrodes under the integrated circuit substrate. The timepiece according to claim 2 or 3, further comprising a liquid crystal display panel having a wiring block portion. 5. An integrated circuit substrate having a connection portion connected to a second electrode and a connection portion connected to a portion of the first electrode on one side of the integrated circuit substrate, and connected to the portion of the first electrode. The timepiece according to any one of claims 1 to 4, further comprising: a liquid crystal display panel having a connection portion connected to a remaining first electrode on a side of the integrated circuit substrate having a connection portion. 6. A connection part connected to a second electrode and a connection part connected to a part of the first electrode on one side of the integrated circuit substrate, and connected to the part of the first electrode. A connection portion connected to the remaining first electrode is provided on a side that is in contact with the side of the integrated circuit substrate having the connection portion, and the connection portion connected to the second electrode is provided in a wiring block portion below the integrated circuit substrate. The connection of the second electrode, which is concentrated and adjacent to the connection of the first electrode,
The timepiece according to any one of claims 2 to 4, further comprising a liquid crystal display panel, further comprising a wiring block portion extending to a portion close to a connection portion of another second electrode. 7. The first electrode and the second electrode each have a connection portion for connecting to the integrated circuit substrate, and at least one of the first electrode and the second electrode is more integrated than the connection portion. Having a wiring block extending inside the circuit board,
In the wiring block section, the odd-numbered first electrode and the even-numbered first electrode, or the odd-numbered second electrode and the even-numbered second electrode terminal section are formed of at least two kinds of electrodes under the integrated circuit substrate. The timepiece according to claim 2 or 3, further comprising a liquid crystal display panel having a wiring block portion. 8. The connection between an input terminal for applying an input signal from a source other than the first substrate or the second substrate and an external circuit board for generating the input signal is made by conducting a conductive rubber material having conductive particles. The timepiece according to any one of claims 1 to 7, wherein the timepiece is an anisotropic connector formed by laminating a portion and a non-conductive portion containing no conductive particles. 9. A connection between an input terminal for applying an input signal from a source other than the first substrate or the second substrate and an external circuit board for generating the input signal is made by connecting an electrically conductive material inside or around the insulating rubber material. The timepiece according to any one of claims 1 to 7, wherein the timepiece is an anisotropic connector having a wire. 10. The integrated circuit board according to claim 1, further comprising an insulating short-circuit prevention layer on a surface other than the surface on which the IC output terminals are formed.
A watch according to any one of claims 1 to 9. 11. The timepiece according to claim 1, further comprising an isolation holding portion between the integrated circuit board and the anisotropic connector, which constitute the integrated circuit board. 12. An isolated holding section is provided between the integrated circuit board constituting the integrated circuit board and the anisotropic connector, and a fixing resin is provided between the integrated circuit board and the isolated holding section. The timepiece according to any one of claims 1 to 11, wherein the timepiece has: 13. The isolation holding section includes a first substrate and a second substrate.
The timepiece according to claim 10, wherein the timepiece is in contact with both substrates.