JP2008241922A - Liquid crystal display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device capable of easily applying an insulating member for protecting a lead line and a connection line. <P>SOLUTION: The liquid crystal display device is comprised of a pair of sheet-like shielding members 30, 30 arranged on both sides of a shelf part 18 of a liquid crystal panel 12, an adhesive layer 32 which adheres the shielding members 30 to the shelf part 18 and is provided only on the outside of the shielding members 30 and silicon 28 which covers the lead line 24 and the connection line 26 and applied in a gap between the shielding members 30 and an array substrates 14. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an insulating structure in a liquid crystal panel of a liquid crystal display device.

An IC chip is provided on the shelf of the liquid crystal panel, a lead line is provided between the IC chip and each pixel, and between the IC chip and a flexible wiring board (hereinafter referred to as FPC). A connecting line is provided. For this reason, in order to prevent these connection lines and lead lines from being exposed, they are covered and protected by a covering material such as silicon (for example, see Patent Document 1).
JP-A-8-320500

  FIG. 6 is a partially enlarged plan view of the liquid crystal panel 100 attached to the mobile phone.

  An IC chip 104 made of COG (chip on glass) is attached to the shelf 102 of the liquid crystal panel 100, and an FPC 106 is attached to the end of the shelf 102. As described above, the plurality of lead lines 112 are provided between the IC chip 104 and each pixel of the liquid crystal panel 100, and the connection lines 114 are provided between the IC chip 104 and the FPC 106. Silicon 108 is applied to protect the lead lines 112 and the connection lines 114.

  By the way, when mounting components are stored in a narrow space such as a cellular phone, it is necessary to provide spaces 110 and 110 at corners on both sides of the shelf 102 so that other components can be easily arranged. is there.

  Therefore, in order to prevent the silicon 108 from being applied to the space 110, an operator applying the silicon 108 has applied the finely adjusted position of the application nozzle. Further, in this vicinity, the height to which the silicon 108 is applied is set in advance, and it is necessary to adjust the height so as not to be higher than the set height.

  As described above, when applying the silicon 108, an operator's technique is required, and the operation is very difficult.

  Therefore, in view of the above problems, the present invention provides a liquid crystal display device that can easily apply an insulating member that protects a lead line and a connection line.

  The present invention provides a liquid crystal panel having a liquid crystal layer sandwiched between an array substrate and a counter substrate, and an IC provided on a shelf of the array substrate and connected to each pixel in the array substrate by a plurality of lead lines. In a liquid crystal display device having a chip and a flexible wiring board attached to an end of the shelf of the array substrate and connected to the IC chip by a plurality of connection lines, on both sides of the shelf, A pair of sheet-like shielding members arranged at positions excluding the range in the vicinity of both corners of the shelf, and an adhesive layer that adheres the shielding member to the shelf and is provided only outside the shielding member; A liquid crystal display device comprising: an insulating member that covers the plurality of lead lines and the plurality of connection lines on the array substrate and is applied to a gap between the shielding member and the array substrate.

  According to the present invention, since the portion where the insulating member is applied by the pair of shielding members is limited and the height thereof is also limited, it can be easily applied.

  Hereinafter, embodiments of the liquid crystal display device 10 of the present invention will be described with reference to the drawings.

(First embodiment)
Hereinafter, a liquid crystal display device 10 according to a first embodiment of the present invention will be described with reference to FIGS.

(1) Configuration of Liquid Crystal Display Device 10 The liquid crystal display device 10 is mounted on a mobile phone and has a liquid crystal panel 12 of 2 to 3 inches. In the liquid crystal panel 12, a counter substrate 16 is disposed on an upper surface of the array substrate 14 with a liquid crystal layer interposed therebetween, and the size of the array substrate 14 is larger than that of the counter substrate 16 and a shelf portion 18 is formed.

  An IC chip 20 by COG is provided along the side of the shelf 18. The IC chip 20 includes a driver circuit for the liquid crystal panel 12.

  Further, an FPC 22 for connecting to a main control unit in the main body of the mobile phone is attached to the end of the shelf 18.

  A plurality of lead lines 24 are wired between the IC chip 20 and each pixel of the array substrate 14. A plurality of connection lines 26 are also provided between the IC chip 20 and the FPC 22.

(2) Insulating structure Since the plurality of lead lines 24 and the plurality of connection lines 26 are wired on the array substrate 14 in the liquid crystal display device 10 configured as described above, they are exposed and covered with silicon 28 for protection. There is a need to. Hereinafter, a method for forming the insulating structure will be described with reference to FIGS.

  First, a pair of shielding members 30 and 30 are disposed on both sides of the shelf 18. These shielding members 30 are transparent yellow or transparent color films made of PET and form a sheet, and have a “<” shape as shown in FIG. 2. An adhesive layer 32 is provided on the lower surface side of the shielding member 30. However, the adhesive layer 32 is not provided on the entire lower surface of the shielding member 30 but is formed in a range excluding the triangular area 34 on the corner portion side of the “<”-shaped shielding member 30. As shown in FIG. 2, these shielding members 30 are arranged so that the triangular areas 34 face each other, that is, inward, and a space 36 between the “<” shapes of the shielding members 30 is a shelf. It arrange | positions so that it may form in the corner | angular part of the part 18. FIG. When affixing the "<"-shaped shielding member 30 to the shelf 18, as shown in FIG. 2, if the distance B and C with the edge of the shelf 18 are attached so as to be substantially constant, The pair of shielding members 30 can always be attached at the same position.

  As described above, the silicon 28 is applied between the pair of shielding members 30, 30 bonded to the shelf 18 of the array substrate 14. Silicon 28 is applied around the IC chip 20 and covers the plurality of lead lines 24 and connection lines 26. As shown in FIG. 3, since the adhesive layer 32 is not applied to the triangular area 34, a gap 15 is formed between the shielding member 30 and the array substrate 14, and silicon 28 enters and hardens into the gap 15. . The height of the gap 15 in the triangular area 34 is 50 to 75 μm, and accordingly, the height of the adhesive layer 32 is also 50 to 75 μm.

  And since the shielding member 30 is transparent yellow or transparent color, when it sees from a plane as shown in FIG. 2, when the silicon | silicone 28 is filled along this triangular area, an external appearance will become beautiful.

  In addition, since the silicon 28 does not go outside by the shielding member 30, a space 36 necessary for mounting is surely vacated.

  In addition, this application does not require advanced techniques as in the prior art, and silicon 28 may be applied around the IC chip 20.

  In this case, the height to be applied is also adjusted by the gap between the triangular areas 34, so that the height does not increase.

(3) Method for Forming Shielding Member 30 As a method for forming the shielding member 30 as described above, as shown in FIG. 4, the "<"-shaped shielding member 30 is formed on a sheet of PET. To do. In this case, the triangular areas 34 are arranged in the upper part, and the other parts are arranged in the lower part. The adhesive layer 32 is formed in the lower part, and the adhesive layer 32 is not provided in the upper part where the triangular area 34 is present. Further, a sewing line 38 is provided at the boundary portion, and the shielding member 30 is separated from the portion of the sewing line 38 one by one and attached to the shelf 18 one by one.

(Second Embodiment)
Next, the liquid crystal display device 10 of the second embodiment will be described with reference to FIG.

  The difference between this embodiment and the first embodiment is that an extending member 40 is provided between the pair of shielding members 30, 30, and the pair of sheet-like shielding members 30, 30 are integrated by the extending member 40. It is in the point. The extending member 40 is disposed between the IC chip 20 and the FPC 22, and the area 31 where the adhesive layer 32 is not provided has a pair of shielding members 30 and the extending member 40 as shown in FIG. 5. The inside part of

  With the shielding member 30 having such a configuration, the silicon 28 is applied to the inner area 31 with a gap, so that the plurality of lead wires 24 and the connection wires 26 can be more reliably covered with the silicon 28. A pair of spaces 36, 36 can be secured.

(Example of change)
The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist thereof.

  Although the liquid crystal display device in the mobile phone has been described in the above embodiment, the present invention can be applied to other liquid crystal display devices such as a mobile communication terminal.

It is a top view of the liquid crystal display device 10 of 1st Embodiment. It is a partial enlarged plan view of a liquid crystal panel. It is the sectional view on the AA line in FIG. It is explanatory drawing which shows the formation method of a shielding member. It is an enlarged plan view of the liquid crystal panel of the second embodiment. It is a partially expanded plan view of a conventional liquid crystal panel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Liquid crystal display device 12 Liquid crystal panel 14 Array substrate 16 Opposite substrate 18 Shelf part 20 IC chip 22 FPC
24 Lead-out line 26 Connection line 28 Silicon 30 Shielding member 32 Adhesive layer 34 Triangle area 36 Space

Claims (6)

A liquid crystal panel in which a liquid crystal layer is sandwiched between an array substrate and a counter substrate;
An IC chip provided on the shelf of the array substrate and connected to each pixel in the array substrate by a plurality of lead lines;
A flexible wiring board attached to an end of the shelf of the array substrate and connected to the IC chip by a plurality of connection lines;
In a liquid crystal display device having
A pair of sheet-shaped shielding members disposed on both sides of the shelf, excluding the range in the vicinity of both corners of the shelf,
Adhering the shielding member to the shelf, and an adhesive layer provided only outside the shielding member;
An insulating member that covers the plurality of lead lines and the plurality of connection lines on the array substrate and is applied to a gap between the shielding member and the array substrate;
A liquid crystal display device. The extension member is connected between the pair of shielding members to form a single body,
The extending member is disposed between the IC chip and the flexible wiring board.
The liquid crystal display device according to claim 1. The shielding member is PET;
The liquid crystal display device according to claim 1. The shielding member is transparent or transparent yellow,
The liquid crystal display device according to claim 1. The insulating member is silicon;
The liquid crystal display device according to claim 1. The range in the vicinity of both corners of the shelf is a rectangle,
The liquid crystal display device according to claim 1.

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