JP2009237410A - Liquid crystal panel, liquid crystal display and method for manufacturing liquid crystal panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal panel for suppressing the influence of static electricity and shortening manufacturing steps. <P>SOLUTION: The liquid crystal panel includes: an array side substrate 2 on which pixel electrodes and a common electrode are formed; a CF side substrate 1 arranged oppositely to the array side substrate 2; a liquid crystal layer 10 held between the array side substrate 2 and the CF side substrate 1; a CF surface side pattern 4 formed on a surface of the CF side substrate 1, which is the opposite side to the liquid crystal layer 10; a CF side through electrode 3 formed so as to pierce through the CF side substrate 1 in a frame area 12 of the CF side substrate 1 and electrically connected to the CF surface side pattern 4; a transfer electrode 23 formed on a surface of the array side substrate 2, which is on the liquid crystal layer 10 side; and a transfer material 7 formed between the array side substrate 2 and the CF side substrate 1 to electrically connect the transfer electrode 23 to the CF side through electrode 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a horizontal electric field type liquid crystal panel, a liquid crystal display device, and a manufacturing method thereof.

  A liquid crystal display (LCD) includes two substrates that are arranged to face each other with a liquid crystal interposed therebetween. A pixel electrode and a common electrode are formed in the pixel region. By applying a voltage between these electrodes, the alignment state of the liquid crystal molecules is controlled. By changing the alignment state of the liquid crystal molecules, the light transmittance is controlled and display is performed.

  As a driving method of the liquid crystal display device, there are a TN (Twisted Nematic) method and an IPS (In Plane Switching) method. In a TN liquid crystal display device, a pixel electrode is formed on one array substrate of two opposing substrates, and a common electrode is formed on the other CF substrate. In the IPS liquid crystal display device, a pixel electrode and a common electrode are formed on the surface of the array substrate on the liquid crystal side of one of the opposed substrates. In the IPS LCD, the alignment state of the liquid crystal is controlled by a lateral electric field generated by electrodes formed on the liquid crystal side of the array substrate.

  Unlike the CF substrate in the TN LCD, the CF substrate side in the IPS LCD is in a floating state. For this reason, if the display surface of the CF substrate of the IPS LCD is touched with a hand or the like, charges are likely to accumulate. There is a problem that the alignment state of the liquid crystal changes due to the external electric field, resulting in deterioration of display quality.

  In order to solve such a problem, various techniques have been conventionally proposed (Patent Documents 1 and 2). Patent Document 1 describes a liquid crystal display device in which a polarizing plate with a conductive adhesive is attached to the surface of a CF substrate. As a result, external charges can be shielded and accumulated charges can be released to the housing. Patent Document 2 discloses a liquid crystal display in which ITO (Indium Tin Oxide), which is a transparent electrode, is formed on the surface of a CF substrate, and a conductive spacer is disposed between the casing and ITO formed on the surface of the CF substrate. An apparatus is described. Thereby, the electric charge of the CF substrate can be released to the housing.

  Further, an ITO pattern 4 of a transparent electrode is formed on the surface of the CF side substrate 1 and electrically connected to the PAD 54 of the array side substrate 2 using a conductive paste 53 and a conductive tape 55 as shown in FIG. There is a method of making it difficult to store charges by applying a required potential or by connecting to a housing 56 and releasing the charges to the outside as shown in FIG.

Since the array side substrate 2 is provided with liquid crystal drive wiring, charges are less likely to accumulate than the CF side substrate. However, the array side substrate 2 is touched by hand during a simple lighting test in the non-driven state, or the protective sheet of the polarizing plate is peeled off. In such a case, charges are easily accumulated, and the orientation of the liquid crystal is disturbed. For this reason, the electric charge from the outside is shielded by attaching a deflecting plate with a conductive adhesive to the back surface of the array side substrate 2.
JP-A-5-188388 Japanese Patent Laid-Open No. 11-352506

  In the conventional structure, the CF side substrate 1 and the array side substrate 2 are basically in a floating state until the module assembly process after the panel assembly process. For this reason, charges are likely to accumulate, and the liquid crystal layer 10 is sandwiched between electrodes of different potentials, so that the alignment is easily disturbed. When setting the LCD panel on the inspection jig for the simple lighting inspection process, avoid touching the display surface with your hands as much as possible, or electrically connect the ITO pattern 4 on the surface of the CF substrate with conductive tape or the like. The charge on the display surface side of the substrate 1 is released.

  For this reason, compared with the simple lighting inspection process of the normal TN structure LCD panel, the handling of the product is required, and the attaching work of the conductive tape is required. Further, when the liquid crystal alignment is abnormal, it is necessary to leave the display until the display is stabilized in order to determine whether or not the display is defective due to other problems, which takes time and inspection time.

  In the module process, the method described in Patent Documents 1 and 2, or the method of electrically connecting to the array side substrate 2 with the conductive paste 53 and the conductive tape 55 as shown in FIG. 10, or FIG. As described above, a method of electrically connecting to the module housing 56 with the conductive tape 55 is necessary, and the appearance inspection after the corresponding work is also performed. Therefore, it takes time and inspection time compared with a normal TN structure LCD. Was a problem.

  The present invention has been made against the background of such circumstances, and an object of the present invention is to provide a liquid crystal panel, a liquid crystal display device, and a liquid crystal display device capable of suppressing the influence of static electricity and shortening the manufacturing process. An object is to provide a manufacturing method.

  A liquid crystal panel according to one embodiment of the present invention is a liquid crystal panel including a display region and a frame region provided around the display region, and a pixel electrode and a common electrode facing the pixel electrode are formed A first substrate; a second substrate disposed to face the first substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; and the liquid crystal layer of the second substrate A first conductive film provided on a surface opposite to the first side, and a first conductive film provided to penetrate the second substrate in the frame region of the second substrate and electrically connected to the first conductive film One through electrode, an electrode formed on the surface of the first substrate on the liquid crystal layer side, provided between the first substrate and the second substrate, and electrically connecting the electrode and the first through electrode And a first conductive member for connection.

  A method for manufacturing a liquid crystal panel according to one aspect of the present invention includes a display area and a frame area provided around the display area, wherein a pixel electrode and a common electrode facing the pixel electrode are formed. A method for manufacturing a liquid crystal panel, comprising: a substrate; a second substrate disposed to face the first substrate; and a liquid crystal layer sandwiched between the first substrate and the second substrate, Forming a first conductive film on a surface opposite to the liquid crystal layer side of the second substrate, forming a through hole in the frame region of the second substrate, and filling the through hole with a connection conductor; Forming a first through electrode electrically connected to the first conductive film; forming an electrode on a surface of the first substrate on the liquid crystal layer side; and forming a first gap between the first substrate and the second substrate. One conductive layer is formed to electrically connect the electrode and the first through electrode.

  ADVANTAGE OF THE INVENTION According to this invention, the influence of static electricity can be suppressed and the liquid crystal panel which can reduce a manufacturing process, a liquid crystal display device, and its manufacturing method can be provided.

  Embodiments to which the present invention can be applied will be described below. The following description is to describe the embodiment of the present invention, and the present invention is not limited to the following embodiment. For clarity of explanation, the following description and drawings are omitted and simplified as appropriate.

Embodiment 1 FIG.
The configuration of the liquid crystal display device according to Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing a configuration of a liquid crystal display device 100 according to the present embodiment. FIG. 2 is a plan view of the liquid crystal panel 20. As a liquid crystal display device according to the present invention, a horizontal electric field type (IPS type) liquid crystal display device will be described.

  As shown in FIG. 1, the liquid crystal display device 100 includes a liquid crystal panel 20 and a backlight 21. As shown in FIGS. 1 and 2, the liquid crystal panel 20 includes a CF side substrate 1, an array side substrate 2, a CF side through electrode 3, a CF surface side pattern 4, a CF side back surface conductive film 5, an array side conductive layer 6, A transfer material 7, a seal material 8, a color filter (CF) 9, a liquid crystal layer 10, a polarizing plate 13, a common common pattern 50, an FPC terminal 51, and a driver IC 52 are provided.

  As shown in FIG. 1, the liquid crystal panel 20 includes a liquid crystal layer 10 in a space between the array side substrate 2, the CF side substrate 1 disposed to face the array side substrate 2, and the sealing material 8 that bonds the two substrates. It has the structure which enclosed. Between the two substrates, a predetermined interval is maintained by a spacer (not shown). As the array side substrate 2 and the CF side substrate 1, an insulating substrate such as a light transmissive glass substrate is used.

  An array-side conductive layer 6 is formed on the array-side substrate 2. On the other hand, a CF 9 is formed on the surface of the CF side substrate 1 facing the array side substrate 2. An alignment film (not shown) is formed on each of the array-side conductive layer 6 and the CF 9. In addition, as CF9, the color material corresponding to each color of R, G, B, BM (Black Matrix) formed between each color material, an overcoat layer formed so as to cover these, etc. The thing of a structure can be used.

  A plurality of gate lines and a plurality of source lines (not shown) are formed on the array side substrate 2. In addition, a thin film transistor (TFT) is provided near the intersection of the gate line and the source line. A pixel electrode is formed in a region surrounded by adjacent gate lines and source lines. A region surrounded by adjacent gate lines and source lines is a pixel. Therefore, the pixels are arranged in a matrix on the array side substrate 2. A region where a plurality of pixels are formed becomes a display region 11. By applying a voltage to the liquid crystal layer 10 between the pixel electrode and the common electrode, an electric field substantially parallel to the substrate surface is applied to the liquid crystal layer 10.

  In the present embodiment, a common electrode is formed on the array-side substrate 2 so as to face the pixel electrode. The pixel electrode and the common electrode for driving the liquid crystal layer 10 are not formed on the CF side substrate 1 but only on the array side substrate 2. The pixel electrode and the common electrode are formed of a transparent conductive film such as ITO (Indium Tin Oxide), for example.

  A polarizing plate 13 is attached to the outer surface of the array side substrate 2. On the other hand, a CF surface side pattern 4 is formed on the outer surface of the CF side substrate 1, and a polarizing plate 13 is adhered thereon. That is, the CF surface side pattern 4 is formed on the CF side substrate 1 on which the pixel electrode, the common electrode, and the like for driving the liquid crystal layer 10 are not formed. The CF surface side pattern 4 is provided on the surface of the CF side substrate 1 opposite to the liquid crystal layer 10. That is, the CF surface side pattern 4 is formed on the viewing side surface of the CF side substrate 1.

  The CF surface side pattern 4 functions as a shield against static electricity from the outside. For this reason, for example, even when a high potential such as static electricity is applied from the outside of the liquid crystal panel 20, the influence of static electricity can be suppressed and the occurrence of display abnormality can be prevented. As the CF surface side pattern 4, a transparent conductive material such as ITO, zinc oxide, or tin oxide can be used.

  A backlight 21 is provided on the back side of the liquid crystal panel 20. The backlight 21 irradiates the liquid crystal panel 20 with light from the opposite viewing side of the liquid crystal panel 20. As the backlight 21, the thing of the general structure provided with the light source, the light-guide plate, the reflective sheet, the diffusion sheet, the prism sheet, the reflective polarizing sheet etc. can be used, for example.

  A frame region 12 is formed around the display region 11 of the array side substrate 2. In the frame area 12, a common common pattern 50, an FPC terminal 51, and a driver IC 52 are provided. The gate line and the source line extend from the display area 11 to the frame area 12 and are connected to the driver IC 52. The driver IC 52 supplies a gradation signal corresponding to a display signal input from the outside to the source line, and supplies a scanning signal for turning on / off the TFT to the gate line. In FIG. 1, the common common pattern 50, the common electrode, and the like are indicated by the array-side conductive layer 6.

  In addition, a common potential is supplied to the common electrode via the common common pattern 50. By controlling the electric field applied to the liquid crystal layer 10 by supplying a signal potential to the pixel electrode via the TFT with respect to the common electrode held at the common potential, the alignment state is changed. As a result, the transmittance of light from the backlight 21 is controlled and display is performed.

  In the frame region 12 of the CF side substrate 1, a CF side through electrode 3 that penetrates the CF side substrate 1 is provided. The CF side through electrode 3 is provided with a through hole at a predetermined location using etching or laser on the CF side substrate 1. The CF side through electrode 3 is formed by filling the through hole with a connection conductor. The CF side through electrode 3 is electrically connected to the CF surface side pattern 4.

  A CF-side back surface conductive film 5 is provided on the surface of the frame region 12 of the CF-side substrate 1 on the liquid crystal layer 10 side. That is, the CF side back surface conductive film 5 is formed in a region excluding the region where the CF 9 is formed. The CF side back surface conductive film 5 is connected to the CF surface side pattern 4 via the CF side through electrode 3. As the CF side back surface conductive film 5, a transparent conductive film such as ITO or a conductive BM material can be used.

  A transfer electrode 23 is provided on the surface of the frame region 12 of the array side substrate 2 on the liquid crystal layer 10 side. In the present embodiment, the transfer electrode 23 is connected to the common common pattern 50. However, the transfer electrode 23 may be divided from the common common pattern 50 to apply a desired potential. In the following embodiments, a case where the transfer electrode 23 is connected to the common common pattern 50 will be described for simplification. The transfer electrode 23 is formed to face the CF-side back surface conductive film 5 formed on the CF-side substrate 1 when the array-side substrate 2 and the CF-side substrate 1 are bonded together.

  Between the array side substrate 2 and the CF side substrate 1, a transfer material 7 for electrically connecting the transfer electrode 23 and the CF side through electrode 3 is provided. In the present embodiment, the transfer electrode 23 and the CF side through electrode 3 are connected via the transfer material 7 and the CF side back surface conductive film 5. Thus, a common potential is supplied from the common common pattern 50 to the CF surface side pattern 4 when the liquid crystal is driven. In addition, when the CF side through electrode 3 and the transfer electrode 23 are formed at positions facing each other, the CF side back surface conductive film 5 is not formed, and the connection can be made by the transfer material 7.

  Conventionally, when the CF side substrate 1 has a floating structure, there is a problem that the liquid crystal layer 10 is sandwiched between electrodes having different potentials, and the alignment of the liquid crystal layer 10 is disturbed. However, according to the present invention, the CF side substrate 1 and the array side substrate 2 are electrically connected after the assembly process of the liquid crystal panel 20. For this reason, even if electric charges accumulate in the CF side substrate 1 in the subsequent process, the CF side substrate 1 and the array side substrate 2 have the same potential. Therefore, the liquid crystal layer 10 sandwiched between the CF side substrate 1 and the array side substrate 2 is sandwiched between electrodes of the same potential. Thereby, the alignment state of the liquid crystal layer 10 can be stabilized.

  Further, the CF side substrate 1 and the array side substrate 2 after the assembly process of the liquid crystal panel 20 are electrically connected, and the influence of external charges can be suppressed. For this reason, the liquid crystal panel 20 according to the present invention can be easily handled in the same manner as the liquid crystal panel having the TN structure. In addition, it is not necessary to apply a conductive tape or the like in the simple lighting inspection process. For this reason, the pasting of the conductive paste 53 or the conductive tape 55 and the corresponding appearance inspection process in the module process are also unnecessary. Thereby, shortening of a manufacturing process and reduction of a member are realizable.

  Next, with reference to FIG. 3, a method for manufacturing liquid crystal display device 100 according to the present embodiment will be described. FIG. 3 is a flowchart for explaining the manufacturing method of the liquid crystal display device according to the present embodiment. As shown in FIG. 3, first, predetermined electrodes and the like are respectively formed on the CF side substrate 1 and the array side substrate 2 (step S1). Specifically, the TFT, pixel electrode, common electrode, array side conductive layer 6 such as the common common pattern 50, and transfer electrode 23 are formed on the array side substrate 2. The transfer electrode 23 is connected to the common common pattern 50. On the other hand, CF9 or the like is formed on the CF side substrate 1.

  Then, etching or laser or the like is used for the frame region 12 excluding the display region 11 of the CF side substrate 1, and a through hole is provided at a desired location. The through hole is filled with a connection conductor to form the CF side through electrode 3 (step S2). Note that step S1 and step S2 may be interchanged from the manufacturing aspect. Then, on the back surface side of the CF side substrate 1, the CF side back surface conductive film 5 is formed in the frame region 12 excluding the region where the CF 9 is formed. Further, the CF surface side pattern 4 is formed on the surface side of the CF side substrate 1. The CF surface side pattern 4 can also be formed after the liquid crystal panel 20 is assembled. As a result, the CF side back surface conductive film 5 on the back side of the CF side substrate 1 and the CF surface side pattern 4 on the display surface side of the CF side substrate 1 are electrically connected via the CF side through electrode 3.

  Next, an alignment film subjected to an alignment process in a predetermined direction is formed on the electrode formation surface and the CF9 formation surface of each substrate (step S3). And it arrange | positions so that the electrode formation surface of the array side board | substrate 2 and the CF9 formation surface of the CF side board | substrate 1 may oppose, and it bonds together by the sealing material 8 apply | coated so that a display area may be enclosed (step S4). At this time, the transfer electrode 23 of the array side substrate 2 and the CF side back surface conductive film 5 of the CF side substrate 1 are connected via the transfer material 7. Thus, after the liquid crystal panel assembling process, the CF side substrate 1 and the array side substrate 2 are electrically connected. Thereby, the alignment state of the liquid crystal layer 10 sandwiched between the CF side substrate 1 and the array side substrate 2 can be stabilized. Since the CF side substrate 1 and the array side substrate 2 after the assembling process of the liquid crystal panel 20 are electrically connected, even in the simple lighting inspection process of the liquid crystal panel 20, an attaching operation such as a conductive tape becomes unnecessary. . Thereby, shortening of a manufacturing process and reduction of a member are realizable.

  Then, liquid crystal is injected into the space between the CF side substrate 1 and the array side substrate 2 (step S5). And a polarizing plate etc. are affixed on the outer side of each board | substrate which comprises the liquid crystal panel 20 (step S6), and a drive circuit is mounted (step S7). Thereby, the liquid crystal panel 20 is completed. Thereafter, the backlight 21 is mounted on the back side of the liquid crystal panel 20 (step S8), and the liquid crystal display device 100 is completed.

  FIG. 4 shows a modification of the liquid crystal panel 20 according to the present embodiment. As shown in FIG. 4, a sealing material 14 containing conductive particles can be used instead of the transfer material 7 of FIG. The CF-side back surface conductive film 5 and the array-side conductive layer 6 can be electrically connected when the CF-side substrate 1 and the array-side substrate 2 are overlapped by the sealing material 14 containing conductive particles. Thereby, a frame size can be made smaller than the case where the transfer electrode 23 and the transfer material 7 are used.

Embodiment 2. FIG.
The configuration of the liquid crystal panel according to Embodiment 2 of the present invention will be described with reference to FIGS. FIG. 5 is a cross-sectional view showing the configuration of the liquid crystal panel 20 according to the present embodiment. FIG. 6 is a plan view of the liquid crystal panel 20. The present embodiment is different from the first embodiment in that an array side through electrode 30 is provided on the array side substrate 2. 5 and 6, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 5, an array back side ITO pattern 31 is formed on the outer surface of the array side substrate 2. That is, the array back surface side ITO pattern 31 is provided on the surface of the array side substrate 2 opposite to the liquid crystal layer 10. That is, the array back surface side ITO pattern 31 is formed on the surface of the array side substrate 2 on the non-viewing side. As the array back side ITO pattern 31, a transparent conductive material such as ITO, zinc oxide, tin oxide or the like can be used. The array back side ITO pattern 31 may be formed after a liquid crystal driving circuit pattern such as a pixel electrode is formed on the array side substrate 2 or after the liquid crystal panel 21 is assembled.

  In the frame region 12 of the array side substrate 2, an array side through electrode 30 that penetrates the array side substrate 2 is provided. The array-side through electrode 30 is provided with a through-hole at a predetermined location using etching or laser on the array-side substrate 2. The array side through electrode 30 is formed by filling the through hole with a connection conductor. The array side through electrode 30 is electrically connected to the array back surface side ITO pattern 31.

  The array side through electrode 30 is formed corresponding to a location where the common common pattern 50 is formed or a location where the transfer electrode 23 connected to the common common pattern 50 is formed. Therefore, the array back side ITO pattern 31 and the common common pattern 50 are electrically connected via the array side through electrode 30. Thereby, a common potential is supplied from the common common pattern 50 to the array back side ITO pattern 31 when the liquid crystal is driven.

  By superimposing the CF side substrate 1 and the array side substrate 2, the array side transfer electrode 23 and the CF side back surface conductive film 5 are electrically connected via the transfer material 7. Thereby, the CF front side pattern 4 and the array back side ITO pattern 31 are electrically connected. Thus, since the CF side substrate 1 and the array side substrate 2 after assembly of the liquid crystal panel 20 have the same potential, the alignment state of the liquid crystal layer 10 sandwiched between these substrates can be further stabilized.

  FIG. 7 shows a modification of the liquid crystal panel 20 according to the present embodiment. As shown in FIG. 7, a sealing material 14 containing conductive particles can be used instead of the transfer material 7 of FIG. The CF-side back surface conductive film 5 and the array-side conductive layer 6 can be electrically connected when the CF-side substrate 1 and the array-side substrate 2 are overlapped by the sealing material 14 containing conductive particles. Thereby, a frame size can be made smaller than the case where the transfer electrode 23 and the transfer material 7 are used.

Other embodiments.
In the above-described embodiment, the CF front side pattern 4 shown in FIGS. 1, 2, and 4, the CF front side pattern 4 and the array back side ITO pattern 31 shown in FIGS. It is connected to the transfer electrode 23 connected to the pattern 50. In these embodiments, the CF front side pattern 4 and the array back side ITO pattern 31 are fixed to a common potential when the liquid crystal is driven. However, the connection configuration of the CF front side pattern 4 and the array back side ITO pattern 31 is not limited to this.

  As shown in FIG. 8, the transfer electrode 23 formed on the array side substrate 2 is electrically separated from the common common pattern 50. The transfer electrode 23 is pulled out to the FPC terminal 51 which is an external connection terminal, and is electrically connected to the FPC terminal 51. As a result, a predetermined potential can be applied to the CF front side pattern 4 and the array back side ITO pattern 31 via the FPC terminal 51 from the outside.

  Further, as shown in FIG. 9, the transfer electrode 23 of the array side substrate 2 is electrically separated from the common common pattern 50, and the CF surface side pattern 4 is electrically conductive tape on the module housing 56 that houses the liquid crystal panel 20. You may connect by 55. Alternatively, the array back side ITO pattern 31 shown in FIGS. 5, 6, and 7 may be connected to the module housing 56 via the conductive tape 55. A ground potential can be supplied to the CF front side pattern 4 and the array back side ITO pattern 31.

  As described above, according to the present invention, after the assembly process of the liquid crystal panel 20, the CF side substrate 1 and the array side substrate 2 are electrically connected, and the CF side substrate 1 and the array side substrate 2 are at the same potential. It becomes. Thereby, it is possible to suppress the influence of static electricity such as peeling charging due to peeling of the protective sheet of the deflecting plate, stabilize the alignment state of the liquid crystal layer 10, and facilitate the handling of the liquid crystal panel. In addition, since the pasting of the conductive tape that has been performed in the conventional inspection process, the pasting of the conductive paste 53 or the conductive tape 55 that has been performed in the module process, and the corresponding appearance inspection process are unnecessary, the manufacturing process can be shortened. The number of members can be reduced.

1 is a diagram illustrating a configuration of a liquid crystal display device according to Embodiment 1. FIG. 1 is a diagram illustrating a configuration of a liquid crystal panel according to Embodiment 1. FIG. 6 is a diagram showing another configuration example of the liquid crystal display device according to Embodiment 1. FIG. It is a flowchart for demonstrating the manufacturing method of the liquid crystal display device which concerns on embodiment. 6 is a diagram showing a configuration of a liquid crystal display device according to Embodiment 2. FIG. 6 is a diagram showing a configuration of a liquid crystal panel according to Embodiment 2. FIG. FIG. 10 is a diagram illustrating another configuration example of the liquid crystal display device according to the second embodiment. It is a figure which shows the structure of the liquid crystal panel which concerns on other embodiment. It is a figure which shows the structure of the liquid crystal panel which concerns on other embodiment. It is a figure which shows the structure of the conventional liquid crystal display device. It is a figure which shows the structure of the conventional liquid crystal display device.

Explanation of symbols

1 CF side substrate 2 Array side substrate 3 CF side through electrode 4 CF surface side pattern 5 CF side back surface conductive film 6 Array side conductive layer 7 Transfer material 8 Seal material 9 CF
DESCRIPTION OF SYMBOLS 10 Liquid crystal layer 11 Display area 12 Frame area 13 Polarizing plate 14 Sealing material 20 Liquid crystal panel 21 Backlight 23 Transfer electrode 30 Array side penetration electrode 31 Array back surface side ITO pattern 50 Common common pattern 51 FPC terminal 52 Driver IC
53 Conductive paste 54 Array side pad 55 Conductive tape 56 Module housing

Claims (10)

A liquid crystal panel comprising a display area and a frame area provided around the display area,
A first substrate on which a pixel electrode and a common electrode facing the pixel electrode are formed;
A second substrate disposed to face the first substrate;
A liquid crystal layer sandwiched between the first substrate and the second substrate;
A first conductive film provided on a surface opposite to the liquid crystal layer side of the second substrate;
A first through electrode provided so as to penetrate the second substrate in the frame region of the second substrate and electrically connected to the first conductive film;
An electrode formed on a surface of the first substrate on the liquid crystal layer side;
A liquid crystal panel comprising a first conductive member provided between the first substrate and the second substrate and electrically connecting the electrode and the first through electrode. A second conductive film formed on a surface of the first substrate opposite to the liquid crystal layer;
2. The liquid crystal panel according to claim 1, further comprising: a second through electrode provided to penetrate the first substrate in the frame region of the first substrate and electrically connected to the second conductive film. A sealant that is formed so as to surround the display region and that fixes the first substrate and the second substrate;
The sealing material has conductive particles,
The liquid crystal panel according to claim 1, wherein the first conductive member includes the sealing material. An external connection terminal formed in the frame region of the first substrate;
4. The liquid crystal according to claim 1, wherein the electrode is electrically connected to the external connection terminal, and a desired potential is supplied from the external connection terminal to the first conductive film, the second conductive film, or both. panel. A liquid crystal panel according to claim 1;
A housing for housing the liquid crystal panel;
A liquid crystal display device comprising: a second conductive member that electrically connects the first conductive film and the housing. A display area and a frame area provided around the display area;
A first substrate on which a pixel electrode and a common electrode facing the pixel electrode are formed; a second substrate disposed so as to face the first substrate; and between the first substrate and the second substrate A liquid crystal panel comprising a liquid crystal layer sandwiched between
Forming a first conductive film on a surface of the second substrate opposite to the liquid crystal layer;
Forming a through hole in the frame region of the second substrate, filling the through hole with a connection conductor, and forming a first through electrode electrically connected to the first conductive film;
Forming an electrode on the liquid crystal layer side surface of the first substrate;
A method for manufacturing a liquid crystal panel, wherein a first conductive layer is formed between the first substrate and the second substrate to electrically connect the electrode and the first through electrode. Forming a second conductive film on a surface of the first substrate opposite to the liquid crystal layer;
7. A through hole is formed in the frame region of the first substrate, and a connection conductor is filled in the through hole to form a second through electrode electrically connected to the second conductive film. The manufacturing method of the liquid crystal panel of description.   A sealing material having conductive particles is formed so as to surround the display region, the first substrate and the second substrate are fixed, and the electrode and the first through electrode are connected via the sealing material. The method for producing a liquid crystal panel according to claim 6 or 7, wherein:   An external connection terminal formed in a frame region of the first substrate is electrically connected to the electrode, and a desired potential is supplied from the external connection terminal to the first conductive film, the second conductive film, or both. Item 9. A method for producing a liquid crystal panel according to item 6, 7 or 8. The liquid crystal panel manufactured by the method according to claim 6 is housed in a housing,
A method for manufacturing a liquid crystal display device, wherein the first conductive film and the housing are electrically connected.

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