JP2003131584A - Liquid crystal display panel and its manufacturing method, liquid crystal display unit, and electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display panel which can effectively prevent misconnection when electrically connected to wiring terminal groups of a plurality of wiring boards (e.g. FPC (Flexible Printed Circuit: flexible printed board)) through terminal groups, and its manufacturing method, a liquid crystal display device, and electronic equipment. SOLUTION: The liquid crystal display unit is equipped with a couple of transparent substrates 2a and 2b which face each other while having liquid crystal charged, panel terminal groups 6a and 6b which are formed on the couple of transparent substrates 2a and 2b, the plurality of wiring boards (flexible printed circuit (FPC)) 4a and 4b, and wiring terminal groups 8a and 8b which are formed on the wiring boards 4a and 4b and has the panel terminal groups 6a and 6b and wiring terminal groups 8a and 8b electrically connected to each other and also has panel-side alignment marks 7a and 7b on the couple of transparent substrates 2a and 2b at positions opposite wiring-side alignment marks 9a and 9b formed on the wiring boards 4a and 4b and mutually different identification marks 25a and 25b corresponding to the wiring boards 4a and 4b on the couple of transparent substrates 2a and 2b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display panel and a method for manufacturing the same, a liquid crystal display device, and electronic equipment. More specifically, a plurality of wiring boards (for example, flexible printed circuit boards (FPC: Flexible Pri
The present invention relates to a liquid crystal display panel capable of effectively preventing erroneous connection when electrically connected to a wiring terminal group of an integrated circuit), a manufacturing method thereof, a liquid crystal display device, and an electronic device.

[0002]

2. Description of the Related Art In recent years, liquid crystal display devices have been widely used in electronic devices such as mobile phones and portable personal computers.

In such a liquid crystal display device, for example, a data (pixel) electrode formed on one of a pair of substrates enclosing a liquid crystal and a scanning electrode formed on the other substrate are provided in a plurality of dot matrix form. Multiple pixels are formed by intersecting at points. By selectively changing the voltage applied to each pixel, the light passing through the liquid crystal of each pixel is modulated, thereby displaying a desired image. In this case, since a voltage is applied to each pixel, for example, a flexible printed circuit board (FPC) is connected. Further, in order to control the voltage applied to each pixel, the liquid crystal driving IC, which is a semiconductor chip, is conductively connected to the electrodes.

Various methods are conventionally known for electrically connecting the liquid crystal driving IC to the electrodes. For example, TCP (Tape Carrier Package: Tape Car)
COB (Chip On)
There are a method using a board: Chip On Board, a method using COG (Chip On Glass), and various other methods. Here, TCP is TAB (Tape Automated Bonding).
This is a wiring board in which a liquid crystal driving IC is mounted on the surface of a flexible printed circuit board (FPC) using the technology of bonding (tape automated mounting). When this is used, the TCP terminal part, that is, The wiring terminal group of the flexible printed circuit (FPC) is electrically connected to the panel terminal group on the substrate of the liquid crystal display panel.

The COB is a wiring board having a liquid crystal driving IC mounted on an insulating substrate. When this is used, a terminal group of this wiring board and a panel terminal group on the substrate of the liquid crystal display panel are used. Are connected via a wiring element such as a heat seal. COG is an anisotropic conductive film (AC
F: Anisotropic Conductive Film), etc., the liquid crystal driving IC is directly bonded on the substrate of the liquid crystal display panel, and is flexible to supply various signals and power to the liquid crystal driving IC. A wiring terminal group on a wiring substrate such as a printed circuit board (FPC) and the panel terminal group on the substrate of the liquid crystal display panel are electrically connected.

As described above, regarding the liquid crystal display device,
It is necessary to connect various wiring boards and wiring elements such as a flexible printed circuit board (FPC) and heat seal to the panel terminal group on the substrate of the liquid crystal display panel.

As shown in FIG. 8, when a wiring board such as a flexible printed circuit board (FPC) is connected to a COG type liquid crystal display device, for example, an anisotropic conductive film (ACF) 5 is used.
3, the panel terminal group 56 formed at the end of the projecting portion 52c of the one substrate 52a, and the wiring terminal group 5 formed at the end 54a of the flexible printed circuit board (FPC) 54.
8 is electrically connected. At the connection part of the substrate 52a,
A pair of panel-side alignment marks 57 are formed so as to sandwich the panel terminal group 56. Further, a pair of wiring side alignment marks 59 are formed on the end portion 54 a of the flexible printed circuit board (FPC) 54 with the wiring terminal group 58 sandwiched therebetween.

When the flexible printed circuit (FPC) 54 is bonded to the substrate 52a, two cameras, for example, CC
As shown in FIG. 8, the wiring side alignment mark 59 on the flexible printed circuit board (FPC) 54 side is taken while photographing the panel side alignment mark 57 from the back side (lower side of the figure) of the substrate 52a using the D camera 61. Are bonded to each other while adjusting the relative positional relationship between the substrate 52a and the flexible printed circuit board (FPC) 54 so that the panel alignment mark 57 has a fixed positional relationship. As a result, the panel terminal group 56 of the substrate 52a and the wiring terminal group 58 of the flexible printed circuit board (FPC) 54 are accurately conductively connected.

[0009]

However, recently,
With the diversification of liquid crystal display devices and the increasing demand for higher packaging, the shape of the liquid crystal display panel and the number and pitch of the panel terminal groups formed on the liquid crystal display panel have also diversified. Since the number of flexible printed circuit boards (FPCs) to be formed has become plural and the number and pitch of wiring terminal groups formed thereon have diversified, the liquid crystal display panel to be joined and the flexible printed circuit board ( The number of combinations with FPC) increases, and it is difficult to effectively prevent the joining (erroneous connection) with an incorrect combination only by the above-mentioned alignment marks that contribute to high-accuracy alignment. However, there is a problem in that this may cause deterioration of the yield. For example, the same shape (for example, squares) as a panel terminal group formed in two directions of an X direction and a Y direction orthogonal to each other on a pair of substrates of a liquid crystal display panel.
When connecting to a wiring terminal group of a flexible printed circuit board (FPC) having the same number and pitch of wiring terminal groups, the flexible printed circuit board ( Since it is difficult to confirm the directionality of the FPC) wiring terminal group, the wiring terminal group to be connected to the X direction panel terminal group is connected to the Y direction panel terminal group and to the Y direction panel terminal group. X is the wiring terminal group to be
There was a problem that it was accidentally connected to the panel terminal group in the direction. Further, as the wiring board, different kinds of boards having the same shape, the same number of terminals and the same pitch (for example, the shape,
Similarly, when using a TAB substrate having the same number of terminals and the same pitch and having different liquid crystal driving ICs mounted thereon, it is similarly difficult to prevent erroneous connection.

The present invention has been made in view of the above problems, and is electrically connected to a wiring terminal group of a plurality of wiring boards (for example, a flexible printed circuit (FPC)) via a terminal group. An object of the present invention is to provide a liquid crystal display panel and a manufacturing method thereof, a liquid crystal display device, and an electronic device that can effectively prevent erroneous connection when connected.

[0011]

In order to achieve the above object, a liquid crystal display panel of the present invention comprises a pair of substrates enclosing liquid crystal and facing each other, and a panel terminal group arranged on the pair of substrates. A liquid crystal display panel in which these panel terminal groups and wiring terminal groups arranged on a plurality of wiring substrates are electrically connected, on the pair of substrates,
A panel-side alignment mark is provided at a position facing a wiring-side alignment mark arranged on the wiring board, and different identification marks corresponding to the wiring boards are provided on the pair of boards. Characterize.

Here, the plurality of electrode terminals included in both the electrode terminal groups of the panel terminal group formed on the substrate of the liquid crystal display panel and the wiring terminal group arranged on the wiring substrate are:
Various electrodes such as signal transmission electrode terminals for transmitting signals for liquid crystal display, power supply electrode terminals for supplying electric power to be the power source for various operations, and so-called dummy terminals Includes terminals.

Also, in the liquid crystal display panel of the present invention, the panel terminal groups are arranged on the pair of substrates so that they are orthogonal to each other.
Direction and Y direction, and the identification mark may have a shape corresponding to each of the X direction and the Y direction.

Thus, in addition to the alignment mark,
Since the different identification marks are provided, it is possible to effectively prevent erroneous connection between the panel terminal group on the substrate of the liquid crystal display panel and the wiring terminal group of the wiring substrate.

Specifically, when the panel terminal group is arranged in two directions of the X direction and the Y direction which are orthogonal to each other on the pair of substrates, the panel terminal group is transparent and can be visually observed. Since it is not possible to connect the wiring terminal group of the wiring board in the wrong direction (X direction or Y direction), the identification mark has a shape corresponding to each of the X direction and the Y direction. If you have
It is possible to effectively prevent connection by making a mistake in the connection direction (X direction or Y direction).

Further, when the wiring boards are made of different kinds of boards and the shapes of the wiring boards and the numbers and pitches of the wiring terminal groups are similar, the panel terminal groups to be combined are connected by mistake. However, if the identification mark has a shape corresponding to the difference of the wiring boards, it is possible to effectively prevent the panel terminals to be connected by mistake.

The wiring board used in the liquid crystal display panel of the present invention is not particularly limited, but a flexible printed circuit board (FPC) can be cited as a preferred example.

Further, in the method of manufacturing a liquid crystal display panel of the present invention, a panel for electrically connecting to a wiring terminal group formed on a plurality of wiring boards on a pair of substrates facing each other in which liquid crystal is sealed. A method of manufacturing a liquid crystal display panel, which includes a step of forming a terminal group, wherein a panel-side alignment mark is formed on the pair of substrates at a position facing a wiring-side alignment mark formed on the wiring substrate. And a step of forming different identification marks corresponding to each of the wiring boards on the pair of boards.

With this structure, when electrically connecting the panel terminal group on the substrate of the liquid crystal display panel and the wiring terminal group of the wiring substrate, it is possible to effectively prevent erroneous connection. The panel can be efficiently manufactured at low cost.

Further, in the method for manufacturing a liquid crystal display panel of the present invention, the panel terminal group is formed on the pair of substrates in two directions, that is, an X direction and a Y direction which are orthogonal to each other, and the identification mark is formed. It may be formed in a shape corresponding to each of the two directions of the X direction and the Y direction.

Thus, in addition to the alignment mark,
Since the different identification marks are provided, it is possible to effectively prevent erroneous connection between the panel terminal group on the substrate of the liquid crystal display panel and the wiring terminal group of the wiring substrate.

Specifically, when the panel terminal group is formed on the pair of substrates in two directions, that is, the X direction and the Y direction, which are orthogonal to each other, the panel terminal group is transparent and can be visually observed. Since it is not possible to connect the wiring terminal group of the wiring board in the wrong direction (X direction or Y direction), the identification mark has a shape corresponding to each of the X direction and the Y direction. If you have
It is possible to effectively prevent connection by making a mistake in the connection direction (X direction or Y direction).

Further, when different kinds of boards are used as the wiring boards, and when the shapes of the respective wiring boards and the numbers and pitches of the wiring terminal groups are similar to each other, the panel terminal groups to be combined are mistakenly connected. However, if the identification mark has a shape corresponding to the difference of the wiring boards, it is possible to effectively prevent the panel terminal group to be connected by mistake.

The wiring board used in the method for manufacturing a liquid crystal display panel of the present invention is not particularly limited, but a flexible printed circuit board (FPC) can be cited as a preferred example.

In the liquid crystal display device of the present invention, a pair of substrates encapsulating liquid crystal and facing each other, a panel terminal group formed on the pair of substrates, a plurality of wiring boards, and arranged on the wiring boards. And a wiring terminal group, wherein the panel terminal group and the wiring terminal group are electrically connected to each other, wherein the wiring side alignment formed on the wiring board is on the pair of substrates. The panel-side alignment mark is provided at a position facing the mark, and different identification marks corresponding to each of the wiring substrates are provided on the pair of substrates.

As described above, the liquid crystal display device of the present invention uses the liquid crystal display panel provided with the identification mark different from each other in addition to the alignment mark, and the panel terminal group on the substrate and the wiring terminal group on the wiring substrate are connected to each other. Since they are electrically connected, erroneous connection of the terminal group is effectively prevented, the defect rate is reduced, and the yield is improved.

Further, in the liquid crystal display device of the present invention, the panel terminal group is arranged on the pair of substrates in two directions of an X direction and a Y direction which are orthogonal to each other, and the identification mark is in the X direction. It may be characterized in that it is formed into a shape corresponding to each of the two directions, ie, the Y direction and the Y direction.

Thus, in addition to the alignment mark,
Since the different identification marks are provided, it is possible to effectively prevent erroneous connection between the panel terminal group on the substrate of the liquid crystal display panel and the wiring terminal group of the wiring substrate.

Specifically, when the panel terminal group is formed on the pair of substrates in two directions, that is, the X direction and the Y direction which are orthogonal to each other, the panel terminal group is transparent and can be visually observed. Since it is not possible to connect the wiring terminal group of the wiring board in the wrong direction (X direction or Y direction), the identification mark has a shape corresponding to each of the X direction and the Y direction. If you have
It is possible to effectively prevent connection by making a mistake in the connection direction (X direction or Y direction).

If the wiring boards are made of different kinds of boards and the shapes of the wiring boards and the numbers and pitches of the wiring terminal groups are similar, the panel terminal groups to be combined are mixed and connected. However, if the identification mark has a shape corresponding to the difference of the wiring boards, it is possible to effectively prevent the panel terminal group to be connected by mistake.

The wiring board used in the liquid crystal display device of the present invention is not particularly limited, but a flexible printed circuit board (FPC) can be cited as a preferred example.

Electronic equipment of the present invention is characterized by including the above-mentioned liquid crystal display device.

As described above, the electronic apparatus of the present invention has the characteristics of the above-described liquid crystal display device as it is, and the defect rate is reduced and the yield is improved as in the case of the above-mentioned liquid crystal display device. Will be things.

[0034]

1 shows an embodiment of a liquid crystal display device according to the present invention. In addition, in FIG. 1, the panel terminal group 6 is provided on each of the pair of transparent substrates 2a and 2b.
a and 6b are formed so as to be orthogonal to two directions of the X direction and the Y direction, and two flexible printed boards (FPC) 4a and 4b are joined to a pair of transparent substrates 2a and 2b. Shows.

FIG. 2 is a sectional view schematically showing a sectional structure of a main part of the liquid crystal display device shown in FIG. As shown in FIG. 2, the liquid crystal display panel 1 includes a pair of transparent substrates (that is, a translucent substrate) joined by a sealing material 13 while maintaining a constant gap, that is, a cell gap by a bead-shaped spacer 12. The liquid crystal 14 has 2a and 2b and is filled in the cell gap.

Polarizing plates 20 are attached to the outer surfaces of the transparent substrates 2a and 2b, respectively. In addition, the transparent substrate 2
On the inner surfaces of a and 2b, ITO (Indium T
in Oxide: indium tin oxide), transparent electrodes 16a and 16b having a predetermined pattern are formed. These transparent electrodes 16a and 16b are a plurality of IC output electrode terminals, that is, ICs, which are formed on the projecting portion 2c of the transparent substrate 2a which extends outside the other transparent substrate 2b.
It is electrically connected (electrically connected) to the output electrode terminal group 16. Further, a plurality of I's are provided at the end of the overhanging portion 2c.
Panel terminal group 6a composed of C input electrode terminals
Are formed. Further, as shown in FIG. 1, a panel terminal group 6b composed of a plurality of IC input electrode terminals is formed at the end of the projecting portion 2d.

An anisotropic conductive film (AC
F) The liquid crystal driving IC 17a is directly bonded using 18a. That is, a COG structure is formed.
The anisotropic conductive film (ACF) 18a is formed by dispersing conductive particles in a resin film, and the resin portion is cured to bond the liquid crystal driving IC 17a and the overhanging portion 2c to each other. The particles electrically conductively connect the bumps 19a of the liquid crystal driving IC 17a to the IC output electrode terminal group 16 and the bumps 19a to the panel terminal group 6a. In addition, as shown in FIG. 1, an anisotropic conductive film (ACF) is used on the overhanging portion 2d to form the liquid crystal driving IC1.
7b is directly bonded. That is, a COG structure is formed. By hardening the resin portion of the anisotropic conductive film (ACF), the liquid crystal driving IC 17b and the overhanging portion 2d are adhered, and further, the liquid crystal driving IC 17 is made by conductive particles.
The bumps b and the IC output electrode terminal group 16 (see FIG. 2) and the bumps and the panel terminal group 6b are conductively connected.

As shown in FIG. 1, a pair of panel-side alignment marks 7a are formed at the connecting portion of the transparent substrate 2a with the panel terminal group 6a interposed therebetween, and the end of the flexible printed circuit (FPC) 4a is formed. A pair of wiring-side alignment marks 9a is formed on the portion 4c with the wiring terminal group 8a interposed therebetween. In addition, a pair of panel-side alignment marks 7 are sandwiched between the transparent substrate 2b and the panel terminal group 6b.
b is formed, and the flexible printed circuit (FPC) 4 is formed.
A pair of wiring-side alignment marks 9b are formed at the end 4d of b with the wiring terminal group 8b interposed therebetween.

FIG. 3 is a plan view schematically showing an arrangement example of identification marks used in one embodiment of the liquid crystal display device of the present invention. In addition, in FIG. 3, the panel terminal groups 6a and 6b are provided on the pair of transparent substrates 2a and 2b, respectively.
The two flexible printed boards (FPCs) 4a and 4b are formed so as to be orthogonal to the two directions of the Y direction and the Y direction, and two flexible printed boards (FPC) 4a and 4b are joined to the pair of transparent boards 2a and 2b. As shown in FIG. 3, two panel-side alignment marks 7a and two identification marks 25a are formed on the transparent substrate 2a, and two panel-side alignment marks 7b and identification marks 25b are formed on the transparent substrate 2b. It is formed individually. There is no particular limitation on the number of formations,
The number may be one or three or more. The positions where the identification marks 25a and 25b are formed are not particularly limited, but since they can be simultaneously confirmed by aligning the alignment marks, the panel-side alignment marks 7a and
It is preferably formed adjacent to 7b. The shape of the panel-side alignment marks 7a and 7b and the wiring-side alignment marks 9a and 9b is clearly visible when electrically connecting the panel terminal groups 6a and 6b to the wiring terminal groups 8a and 8b. There is no particular limitation as long as it can be identified, and, for example, as shown in FIG. 4, X-shaped and Y-shaped ones can be mentioned. In this case, the information may be converted into a signal in the case of erroneous connection and automatically controlled by using an image recognition device instead of visual inspection. Specifically, automatic control may be performed by recognizing the identification mark as a pattern.

Here, as a method of manufacturing the liquid crystal display panel, a commonly used method can be used. That is, the panel terminal groups 6a and 6b are, for example, ITO (Indi
um Tin Oxide) is formed into a desired pattern by a well-known film forming method, for example, a sputtering method or a vacuum evaporation method, and is further formed by a photoetching method. The alignment film is formed by, for example, a method of applying a polyimide solution and then baking, or an offset printing method.

A sealing material 13 is formed in an annular shape on the liquid crystal surface of either the transparent substrate 2a or the transparent substrate 2b shown in FIGS. 1 and 2 by printing or the like, and the transparent substrate 2a or 2b is sandwiched by the sealing material. By sticking together, a liquid crystal panel as shown in FIG. 2 is formed.

Here, a wiring substrate, for example, a flexible printed circuit board (FPC) 4a, 4b on the transparent substrate 2a, 2b.
Panel-side alignment marks 7a and 7b are provided at positions facing the wiring-side alignment marks 9a and 9b formed above.
Examples of the method of forming the same include a method of simultaneously forming the electrodes in the same step as the step of forming the electrodes.

As a method of forming different identification marks 25a and 25b corresponding to the flexible printed circuit boards (FPC) 4a and 4b on the transparent substrates 2a and 2b, for example, wiring side alignment marks 9a and 9b
In the same step as that of forming the above, a method of simultaneously forming can be mentioned.

In this case, the identification marks 25a and 25b are
The panel-side alignment marks 7a and 7b and the wiring-side alignment marks 9a and 9b may be formed separately, but from the viewpoint of productivity, they are preferably formed at the same time.

As shown in FIG. 1, the panel terminals 6a and 6b at the tips of the protruding portions 2c and 2d of the transparent substrates 2a and 2b of the liquid crystal display panel 1 and the flexible printed circuit (FPC) 4 are provided.
When connecting the wiring terminal groups 8a and 8b of a and 4b respectively, first, anisotropic conductive films (ACF) 3a and 3b are attached to the regions including the panel terminal groups 6a and 6b. Then, the CCD camera 11 is arranged on the back surface of the area.
Then, while taking a picture of the vicinity of the panel side alignment marks 7a, 7b by the CCD camera 11, the connection end portions 4c of the flexible printed circuit boards (FPC) 4a, 4b,
4d is carried to the tip portions of the overhanging portions 2c and 2d. In this case, the flexible printed boards (FPC) 4a to be connected to the panel terminal groups 6a and 6b of the liquid crystal display panel 1 by the identification marks 25a and 25b formed on the transparent substrates 2a and 2b of the liquid crystal display panel 1, 4b wiring terminal groups 8a, 8
Whether b is correctly selected is confirmed visually or by using an image recognition device. Next, the flexible printed circuit boards (FPCs) 4a and 4b or the transparent substrates 2a and 2b are arranged so that the wiring side alignment marks 9a and 9b are exactly aligned with the panel side alignment marks 7a and 7b.
Flexible printed circuit board (FPC) after adjusting the position of b
4a and 4b are pressed against the transparent substrates 2a and 2b with the anisotropic conductive films (ACF) 3a and 3b interposed therebetween, and the anisotropic conductive films (ACF) 3a and 3b are cured by heating or the like. As a result, the wiring terminal groups 8a and 8b of the flexible printed circuit boards (FPC) 4a and 4b and the panel terminal groups 6a and 6b of the transparent substrates 2a and 2b are accurately aligned and conductively connected without incorrect connection. Then, the flexible printed circuit board (F
The PCs 4a and 4b can be bonded to the transparent substrates 2a and 2b.

FIG. 5 is a block diagram schematically showing an embodiment of the electronic equipment of the present invention. The electronic device shown here has a display information output source 70, a display information processing circuit 71, a power supply circuit 72, a timing generator 73, and a liquid crystal display device 74. In addition, the liquid crystal display device 74
Has a liquid crystal display panel 75 and a drive circuit 76. As the liquid crystal display device 74 and the liquid crystal display panel 75, those described above can be used.

The display information output source 70 is a ROM (read
A memory such as a read only memory (RAM) or a random access memory (RAM), a storage unit such as various disks, a tuning circuit for tuning and outputting a digital image signal, etc. Display information such as an image signal of a predetermined format is supplied to the display information processing circuit 71 based on the various generated clock signals.

The display information processing circuit 71 includes various well-known circuits such as a serial-parallel conversion circuit, an amplification / inversion circuit, a rotation circuit, a gamma correction circuit, and a clamp circuit, and executes processing of input display information. , And supplies the image signal to the drive circuit 76 together with the clock signal CLK. The drive circuit 76 is a general term for a scanning line drive circuit, a data line drive circuit, an inspection circuit, and the like. Further, the power supply circuit 72 supplies a predetermined voltage to each component.

FIG. 6 shows a mobile personal computer which is another embodiment of the electronic apparatus of the present invention. The personal computer 80 shown here includes a main body 82 having a keyboard 81 and a liquid crystal display unit 8
3 and 3. The liquid crystal display unit 83 is configured to include the liquid crystal display device using the liquid crystal display panel 1 described above.

FIG. 7 shows a portable telephone which is another embodiment of the electronic equipment of the present invention. The mobile phone 90 shown here is configured to include a liquid crystal display device using a plurality of operation buttons 91 and the liquid crystal display panel 1.

The present invention has been described above with reference to the preferred embodiments, but the present invention is not limited to the embodiments and can be variously modified within the technical scope of the present invention.

[0052]

As described above, according to the present invention,
A liquid crystal display panel capable of effectively preventing erroneous connection when electrically connected to a wiring terminal group of a plurality of wiring boards (for example, a flexible printed circuit board (FPC)) via the terminal group, and the same. A manufacturing method, a liquid crystal display device, and an electronic device can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing an embodiment of a liquid crystal display device of the present invention.

FIG. 2 is a sectional view schematically showing a sectional structure of a main part of the liquid crystal display device of FIG.

FIG. 3 is a plan view schematically showing an arrangement example of identification marks used in one embodiment of the liquid crystal display device of the present invention.

FIG. 4 is a plan view schematically showing an example of the shape of an identification mark used in one embodiment of the liquid crystal display device of the present invention.

FIG. 5 is a block diagram schematically showing an embodiment of an electronic device of the present invention.

FIG. 6 is an explanatory diagram schematically showing a mobile personal computer that is another embodiment of the electronic apparatus of the present invention.

FIG. 7 is an explanatory diagram schematically showing a mobile phone which is another embodiment of the electronic device of the present invention.

FIG. 8 is a perspective view showing an example of a conventional liquid crystal display device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Liquid crystal display panel 2a, 2b ... Transparent substrate (translucent substrate) 2c, 2d ... Overhang | projection part 3a, 3b ... Anisotropic conductive film (ACF) 4a, 4b ... Wiring board (Flexible printed circuit board (FP
C)) 4c, 4d ... Ends 6a, 6b of flexible printed circuit board (FPC) ... Panel terminal groups 7a, 7b ... Panel side alignment marks 8a, 8b ... Wiring terminal groups 9a, 9b ... Wiring side alignment marks 11 ... CCD camera 12 ... Bead-shaped spacer 13 ... Seal material 14 ... Liquid crystal 16 ... IC output electrode terminal groups 16a, 16b ... Transparent electrodes 17a, 17b ... Liquid crystal driving IC 18a ... Anisotropic conductive film (ACF) 19a ... Bump 20 ... Polarizing plates 25a, 25b ... Identification marks 52a, 52b ... Substrate 52c ... Overhang 53 ... Anisotropic conductive film (ACF) 54 ... Flexible printed circuit board (FPC) 54a ... Flexible printed circuit board (FPC) End 56 ... Panel terminal group 57 ... Panel side alignment mark 58 ... Wiring terminal group 59 ... Wiring side alignment mark 61 ... CCD camera 70 ... Front Information output source 71 ... Display information processing circuit 72 ... Power supply circuit 73 ... Timing generator 74 ... Liquid crystal display device 75 ... Liquid crystal display panel 76 ... Drive circuit 80 ... Personal computer 81 ... Keyboard 82 ... Main body 83 ... Liquid crystal display unit 90 ... Mobile phone Telephone 91 ... Operation button

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) G09F 9/35 G09F 9/35 F term (reference) 2H092 GA48 GA50 GA57 MA32 NA15 NA16 NA29 5C094 AA42 AA43 BA43 DB05 EB02 EB10 GB01 5G435 AA17 BB12 EE37 EE40 EE47 KK05 KK09 KK10

Claims (13)

[Claims] 1. A pair of substrates enclosing a liquid crystal and facing each other, and a panel terminal group arranged on the pair of substrates, the panel terminal group and wirings arranged on a plurality of wiring boards. A liquid crystal display panel electrically connected to a terminal group, comprising a panel side alignment mark at a position facing the wiring side alignment mark arranged on the wiring substrate on the pair of substrates, A liquid crystal display panel comprising: a pair of substrates, and different identification marks corresponding to each of the wiring substrates. 2. The panel terminal group is arranged on the pair of substrates in two directions, that is, an X direction and a Y direction which are orthogonal to each other, and the identification mark is arranged in each of the two directions, the X direction and the Y direction. The liquid crystal display panel according to claim 1, having a corresponding shape. 3. The liquid crystal display panel according to claim 1, wherein the wiring boards are made of different kinds of boards, and the identification mark has a shape corresponding to a difference of the wiring boards. 4. The liquid crystal display panel according to claim 1, wherein the wiring board is a flexible printed board. 5. A liquid crystal display panel including a step of forming a panel terminal group for electrically connecting with a wiring terminal group formed on a plurality of wiring substrates on a pair of substrates facing each other in which liquid crystal is sealed. A step of forming a panel-side alignment mark at a position facing the wiring-side alignment mark formed on the wiring substrate on the pair of substrates, and the wiring on the pair of substrates. And a step of forming different identification marks corresponding to the respective substrates, the method for manufacturing a liquid crystal display panel. 6. The panel terminal group is formed on the pair of substrates in two directions, ie, an X direction and a Y direction which are orthogonal to each other, and the identification mark is provided in each of the two directions of the X direction and the Y direction. The method for manufacturing a liquid crystal display panel according to claim 5, wherein the manufacturing method is a corresponding shape. 7. The liquid crystal display panel according to claim 5, wherein different types of substrates are used as the wiring substrates, and the identification mark is formed in a shape corresponding to a difference between the wiring substrates. Manufacturing method. 8. The method for manufacturing a liquid crystal display panel according to claim 5, wherein a flexible printed board is used as the wiring board. 9. A pair of substrates enclosing a liquid crystal and facing each other, and a panel terminal group arranged on the pair of substrates,
A liquid crystal display device comprising: a plurality of wiring boards; and a wiring terminal group arranged on the wiring board, wherein the panel terminal group and the wiring terminal group are electrically connected to each other. A panel-side alignment mark is provided at a position opposed to the wiring-side alignment mark arranged on the wiring board, and different identification marks corresponding to the wiring boards are provided on the pair of boards. A liquid crystal display device characterized by the above. 10. The panel terminal group is arranged in two directions of an X direction and a Y direction which are orthogonal to each other on the pair of substrates, and the identification mark is provided in each of the two directions of the X direction and the Y direction. The liquid crystal display device according to claim 9, wherein the liquid crystal display device has a corresponding shape. 11. The liquid crystal display device according to claim 9, wherein the wiring boards are made of different kinds of boards, and the identification mark has a shape corresponding to the difference of the wiring boards. 12. The liquid crystal display device according to claim 9, wherein the wiring board is a flexible printed board. 13. An electronic apparatus comprising the liquid crystal display device according to any one of claims 9 to 12.