JP2009064695A - Illuminating device, liquid crystal device, and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illuminating device excellent in the rework performance of an optical sheet or the like, a liquid crystal device, and electronic equipment. <P>SOLUTION: There are provided: the illuminating device which comprises a light source, a light guide plate, an optical sheet overlapped on the light guide plate, and a frame body accommodating these items; the liquid crystal device; and the electronic equipment. The optical sheet and the frame body are fixed adhesive members arranged at a position superposed with the outer edge of the optical sheet and the inner edge of the frame body, and a non-adhesive area is formed at the frame body making the optical sheet and the frame body partially non-adhesive. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lighting device, a liquid crystal device, and an electronic apparatus. In particular, the present invention relates to an illumination device, a liquid crystal device, and an electronic apparatus that are excellent in reworkability such as an optical sheet and a frame.

Conventionally, as one aspect of an electro-optical device, a plurality of pixel regions composed of opposing regions of electrodes are formed, and a voltage applied to each pixel region is selectively turned on and off, whereby a liquid crystal material for the pixel region A liquid crystal device that modulates light passing through and displays an image such as a picture or a character as a whole display area is widely used.
In such a liquid crystal device, a flexible circuit board (FPC) having a conductive pattern or electronic component on its surface is usually bonded to the substrate via an anisotropic conductive film (ACF) for the purpose of miniaturization and weight reduction. It is connected and used.
In addition, the liquid crystal device includes a semiconductor element for controlling driving of a voltage applied to each pixel region. For example, the liquid crystal device is called a COG (Chip on Glass) method on a glass substrate constituting a liquid crystal panel. In addition, a semiconductor element is mounted via the ACF, or a semiconductor element is mounted via the ACF on the above-described FPC.

Here, in such a liquid crystal device, a specific light-shielding double-sided adhesive tape is used, a light-shielding tape affixing process for preventing light leakage from the light source, and a double-sided adhesive tape for adhering the backlight and the liquid crystal panel A method for manufacturing a liquid crystal device is proposed in which the assembly process is simultaneously performed to improve the assemblability (see Patent Document 1).
More specifically, as shown in FIG. 12, the light-shielding double-sided adhesive tape 301 used includes a PET film 305 as a base material, a light-shielding layer 304 formed on one surface of the PET film 305, and these PETs. The first adhesive layer 303 and the second adhesive layer 306 are arranged so as to sandwich the film 305 and the light shielding layer 304 therebetween.
And the 1st mold release sheet 302 and the 2nd mold release sheet 307 are arrange | positioned so that this light-shielding double-sided adhesive tape 301 may be pinched | interposed, The manufacturing process of bonding the liquid crystal panel in a liquid crystal device, and a backlight. Used in.

In addition, in such a liquid crystal device, a liquid crystal device including an illumination device with uniform light emission luminance has been proposed (see Patent Document 2).
More specifically, as shown in the partial enlarged view in FIG. 13, convex portions 421, 431, and 441 are provided at the corner portions of the optical sheet, and the housing 401 corresponding to these convex portions 421, 431, and 441 is provided. A concave portion 411 is provided in the part, and the optical sheet is accommodated in the housing 401 in a state where the convex portions 421, 431, and 441 are engaged with the concave portion 411.
The lower surfaces of the convex portions 421, 431, and 441 are fixed to the housing 401 with an adhesive tape 405 disposed in the concave portion 411, and the upper surfaces of the convex portions 421, 431, and 441 are covered with the periphery of the optical sheet. As described above, the liquid crystal device is formed by adhering to the housing 401 with the light shielding tape 406.
JP 2002-98945 (Claims, FIG. 1) Japanese Patent Laying-Open No. 2006-58333 (Claims, FIG. 1)

However, in the liquid crystal device disclosed in Patent Documents 1 and 2, when the optical sheet is fixed to the frame with an adhesive member such as a light-shielding double-sided adhesive tape and reworked, the adhesive member is difficult to peel off and is bonded. There was a problem that not only the members but also the optical sheet and the frame were damaged.
Accordingly, the inventors of the present invention have made diligent efforts to partially fix the optical sheet to the frame with an adhesive member such as a light-shielding double-sided pressure-sensitive adhesive tape to form a predetermined non-adhesive region. As an opportunity, the present inventors have found that the adhesive member can be easily peeled off when the optical sheet is reworked, thereby completing the present invention.
That is, an object of the present invention is to provide an illuminating device that is easy to rework without damaging an optical sheet and a frame, and a liquid crystal device and an electronic apparatus including such an illuminating device.

According to the present invention, there is provided a lighting device that includes a light source, a light guide plate, an optical sheet that is placed on the light guide plate, and a frame that accommodates them.
The optical sheet and the frame are fixed by an adhesive member disposed at a position overlapping the outer edge of the optical sheet and the inner edge of the frame, and the optical sheet and the frame are partially unbonded to the frame. An illumination device characterized in that a non-adhesive region is formed is provided, and the above-described problems can be solved.
That is, even when reworking the optical sheet or the like by partially fixing the optical sheet to the frame with an adhesive member such as a light-shielding double-sided adhesive tape and forming a predetermined non-adhesive region, The adhesive member can be easily peeled off.
Therefore, it is possible to provide an illumination device that is easy to rework without damaging the optical sheet or the frame.
Note that the optical sheet and the frame body are partially bonded by the adhesive member, and the optical sheet is partially pressed against the frame body by the adhesive member from one side of the optical sheet accommodated in the frame body. Thus, it is sufficient that the optical sheet is fixedly held.

Further, in configuring the lighting device of the present invention, the non-adhesion region is an opening formed in communication from the adhesion surface between the adhesive member and the frame body to the side surface or the back surface side adjacent to the adhesion surface of the frame body. It is preferable.
With this configuration, a jig such as tweezers can be inserted through the opening, and the adhesive member can be easily peeled even when the optical sheet or the like is reworked.
Further, since a jig such as tweezers can be inserted even when the size of the opening is relatively small, it is possible to provide an illumination device with little light leakage to the outside.

Further, in configuring the lighting device of the present invention, it is preferable to apply a filling material inside or around the opening.
With such a configuration, it is possible to provide an illumination device that has excellent mechanical strength and is less likely to leak light from the opening to the outside.
In addition, since the filler is inserted inside the opening and the surrounding area is covered with the filling material, it is possible to effectively prevent foreign matter and moisture from entering the frame from the outside. can do.

Further, in configuring the lighting device of the present invention, it is preferable that the non-bonding region is a curved surface portion formed from the bonding surface between the bonding member and the frame to the side surface adjacent to the bonding surface of the frame.
With this configuration, when reworking of the optical sheet or the like is unnecessary, or when reworking of the optical sheet or the like is finished, the opening can be blocked by the adhesive member. Therefore, it is possible to effectively prevent a decrease in adhesion between the opening and the adhesive member, light leakage from the opening, and the like.

Further, in configuring the lighting device of the present invention, an outer frame is provided outside the frame body, and the outer frame opening is formed at a part of the outer frame and corresponding to the non-adhesive region. Is preferably provided.
With this configuration, even when the outer frame is provided, the optical sheet or the like can be temporarily taken out of the frame, and excellent reworkability can be obtained.

Another aspect of the present invention is a liquid crystal device including a lighting device and a liquid crystal panel,
The illumination device includes a light source, a light guide plate, an optical sheet disposed on the light guide plate, and a frame body that accommodates the optical sheet, and the optical sheet and the frame include an outer edge portion and a frame body of the optical sheet. The frame member is fixed by an adhesive member disposed at a position overlapping the inner edge portion, and a non-adhesive region in which the optical sheet and the frame member are partially non-adhered is formed on the frame member.
That is, in a liquid crystal device including a lighting device, even when reworking is performed by partially fixing an optical sheet to a frame with an adhesive member and forming a predetermined non-adhesive region, Can be easily peeled off.
Therefore, it is possible to provide a liquid crystal device including an illumination device that is easily reworked without damaging the optical sheet or the frame.

Further, in configuring the liquid crystal device of the present invention, it is preferable that the adhesive member is a light-shielding double-sided tape, and the lighting device and the liquid crystal panel are further bonded and shielded from light.
That is, in a liquid crystal device including an illuminating device, a predetermined light shielding property can be obtained by fixing an optical sheet to a frame with a light shielding double-sided tape as an adhesive member and forming a predetermined non-adhesive region. Even when reworking, only the light-shielding double-sided tape can be easily peeled off.
Therefore, it is possible to provide a liquid crystal device including an illumination device that is less likely to leak from the light source and easily rework without damaging the optical sheet or the frame.

Still another embodiment of the present invention is an electronic apparatus including the above-described liquid crystal device.
That is, in an electronic apparatus including a liquid crystal device including a lighting device, reworking is performed by fixing an optical sheet with an adhesive member to a frame body and forming a predetermined non-adhesive region on the lighting device. Also, the adhesive member can be easily peeled off.
Therefore, it is possible to provide an electronic apparatus including a liquid crystal device including an illumination device that is easily reworked without damaging the optical sheet or the frame.

Hereinafter, embodiments of the illumination device, the liquid crystal device, and the electronic apparatus according to the present invention will be specifically described with reference to the drawings as appropriate.
However, this embodiment shows one aspect of the present invention and does not limit the present invention, and can be arbitrarily changed within the scope of the present invention.

[First Embodiment]
As illustrated in FIG. 1, the first embodiment includes a light source 101, a light guide plate 104, optical sheets 102 and 103 arranged to overlap the light guide plate 104, and a frame body 14 that accommodates these. In the illumination device 120, the optical sheet 102 and the frame body 14 are fixed by an adhesive member 100 disposed so as to overlap the outer edge portion of the optical sheet 102 and the inner edge portion 14 a of the frame body 14. The illumination device 120 is characterized in that a non-adhesive region 106 ′ in which the optical sheet 102 and the frame body 14 are partially non-adhered is formed.
That is, by configuring the illumination device 120 in this way, the optical sheet 102 is fixed to the frame body 14 by the adhesive member 100, thereby holding the optical sheet 103. Even in the case of reworking them, only the adhesive member 100 can be easily peeled off without damaging the optical sheets 102 and 103 and the frame 14 by using the non-adhesive region 106 ′ (opening 106). .

1. Light source The light source 101 used in the illumination device 120 is generally a light emitting diode (LED), but a fluorescent tube, an incandescent light bulb, or the like can also be used.
Moreover, it is preferable that the light source mounted in the illuminating device is mounted on the light source circuit board 17a as shown in FIG.
Such a light source circuit board is a circuit board having a flexible flexible substrate such as polyimide resin as a base, and a light source 101 is mounted in the vicinity of one end, and a panel connection terminal ( (Not shown), and the light source 101 and the connection terminal are electrically connected via electric wiring.
Although not shown, the surface of the flexible circuit board is covered with an insulating film except for the mounting region of the light source 101, the panel connection terminal portion, the inspection terminal portion, and the like.

2. Light Guide Plate The light guide plate 104 shown in FIG. 1 is a member that is positioned on the back side of the liquid crystal panel and uniformly guides the light emitted from the light source 101 to the liquid crystal panel.
Therefore, the light guide plate 104 is a flat plate member made of translucent acrylic resin, polycarbonate resin, or the like, and includes a light reflecting sheet 105 on the back side of the surface facing the liquid crystal panel (not shown). ing.

3. Optical sheet (1) Prism sheet A prism sheet is an optical sheet for imparting directivity to light emitted from a light guide plate and introducing light into a predetermined place of a liquid crystal panel, such as an acrylic resin or a polycarbonate resin. This is a sheet-like product having triangular irregularities formed on the surface.
Usually, such a prism sheet is used in combination of two prism sheets having different degrees and density of triangular irregularities.
Therefore, as shown in FIG. 1, two prism sheets 102 a and 102 b are arranged above the light guide plate 104 with the diffusion sheet 103 interposed therebetween.

(2) Diffusion sheet Further, the diffusion sheet is an optical sheet for introducing light into a predetermined place of the liquid crystal panel by making light emitted from the light guide plate uniform, and having a light scattering function. It is a sheet-like material made of an acrylic resin, a polycarbonate resin or the like having predetermined irregularities on its surface.
Moreover, according to this diffusion sheet, it has the function of making it difficult to see the pattern of a light-guide plate.
Therefore, generally, as shown in FIG. 1, the diffusion sheet 103 is disposed above the light guide plate 104 and between the light guide plate 104 and the prism sheet 102.

(4) Frame As the frame 14 of the illumination device 120 shown in FIG. 1, the light source circuit board 17a, which is a predetermined circuit board on which a light source is mounted, the light guide plate 104, the optical sheets 102 and 103, and the like are accommodated. The structure is not particularly limited as long as it can hold these, and for example, as shown in FIG. 1, a rectangular structure having an outer frame is preferable.
The frame body 14 includes an inner edge portion 14a along the inner wall of the outer frame 14 in order to hold the light source circuit board 17a, the light guide plate 104, or the optical sheets 102 and 103 without dropping them. Yes.

4). Adhesive Member Since the typical adhesive member is a light-shielding double-sided tape, the adhesive member will be described using such a light-shielding double-sided tape as an example.
In addition, as described above in part, the adhesive member is a member that partially bonds the optical sheet and the frame body, but is partially attached to the frame body from one side of the optical sheet accommodated in the frame body. Any member may be used as long as the optical sheet can be fixed and held so that the optical sheet can be fixed and held.

(1) Affixing position Moreover, about the affixing position of the light-shielding double-sided tape as the adhesive member 100, it is preferable that it is a planar position as shown, for example in FIG.
That is, the position where the light-shielding double-sided tape as the adhesive member 100 is affixed is basically a position above the outer edge of the optical sheet 102 and along the inner edge portion 14a of the outer frame 14 of the lighting device 120. .

(2) Form Moreover, it is preferable that the light-shielding double-sided tape as the adhesive member 100 shown in FIG. 1 includes a resin sheet mainly composed of polyethylene terephthalate, polypropylene, or the like.
The reason is that by including such a resin sheet, a predetermined mechanical strength can be ensured even when the thickness is relatively thin, and the flexible circuit board and the element substrate are integrated. This is because it can be easily held.
Specifically, the elastic strength of the light-shielding double-sided tape is preferably equal to or higher than that of the flexible substrate that is the base of the flexible circuit board.
In order to obtain a predetermined light-shielding property, it is preferable that carbon black, titanium oxide, and other colorants and masking agents are laminated or kneaded inside or on the surface of the resin sheet.

(3) Electrical Insulation Further, the light-shielding double-sided tape as the adhesive member 100 shown in FIG. 1 preferably has electrical insulation, so that electrical wiring and electronic components on a flexible circuit board or an element board can be obtained. It is preferable that the occurrence of short-circuiting can be prevented.
Therefore, it is usually preferable that the volume resistance of the light-shielding double-sided tape is set to a value within the range of 1 × 10 ⁶ to 1 × 10 ¹⁵ Ω · cm, and within the range of 1 × 10 ⁷ to 1 × 10 ¹³ Ω · cm. More preferably, the value is more preferably in the range of 1 × 10 ⁸ to 1 × 10 ¹¹ Ω · cm.

(4) Thickness In addition, in the light-shielding double-sided tape as the adhesive member 100 shown in FIG. 1, it is usually preferable to set the thickness to a value within the range of 10 to 300 μm.
This is because a light-shielding double-sided tape having such a thickness can provide a good balance between mechanical strength and light-shielding properties.
That is, if the thickness of the light-shielding double-sided tape is less than 10 μm, the light-shielding property may be lowered or the mechanical strength may be easily lowered. On the other hand, if the thickness of the light-shielding double-sided tape exceeds 300 μm, the followability to the unevenness of the affixed surface may be reduced, and it may be difficult to reduce the thickness.
Therefore, since the balance of such characteristics is further improved, it is preferable to set the thickness of the light-shielding double-sided tape to a value in the range of 30 to 100 μm.

(5) Light shielding rate In the light shielding double-sided tape as the adhesive member 100 shown in FIG. 1, the light shielding rate (thickness is defined as 100 μm) in the visible light region, for example, at a wavelength of 550 nm may be 90% or more. preferable.
That is, when the amount of incident light having a wavelength of 550 nm is set to 100%, it is preferable that 90% or more of light is blocked and the amount of light that can be transmitted is set to a value of 10% or less.
The reason for this is that this configuration can quantitatively prevent the amount of light reaching the active surface of a semiconductor element such as a driver IC, and can effectively prevent malfunction due to photovoltaic power. It is.
In other words, when the shading rate in the visible light region of the light-shielding double-sided tape, for example, at a wavelength of 550 nm, is less than 90%, the active surface of the semiconductor element is caused to malfunction and a good image display cannot be obtained. Because there is.
Accordingly, since malfunction of the semiconductor element is further reduced, it is more preferable that the light shielding rate of the light shielding double-sided tape at a wavelength of 550 nm is 95% or more.
In addition, the light-shielding rate of this light-shielding double-sided tape can be measured using a light transmittance meter or a color difference meter.

(6) Adhesive force Further, in the light-shielding double-sided tape as the adhesive member 100 shown in FIG. 1, the adhesive force is, for example, a peel adhesive force measured in a tape state in accordance with JIS Z0237 (mode: 180 ° peel, It is preferable to set the body: phenol resin plate, peeling speed: 300 mm / min) to a value within the range of 300 to 2000 cN / 12 mm.
The reason for this is that when the peel adhesive strength is less than 300 cN / 12 mm, it may be easily peeled from the frame of the lighting device.
On the other hand, when the peel adhesive strength exceeds 2000 cN / 12 mm, the usable pressure-sensitive adhesive composition is excessively limited, or it may be difficult to remove it when it is pasted by mistake.
Therefore, it is more preferable to set the peel adhesive strength to a value within the range of 400 to 1500 cN / 12 mm, and it is even more preferable to set the value within the range of 500 to 1200 cN / 12 mm.

5). Non-adhesive region As shown in FIG. 1, the non-adhesive region 106 ′ is at least between the adhesive member 100 and the frame body 14 when the optical sheet 102 is adhered to the frame body 14 by the adhesive member 100. It is a gap formed in.
As will be described later, a predetermined opening 106 is provided in the frame body 14, and for example, tweezers 108 is inserted between the adhesive member 100 and the frame body 14 to form an operable gap. Is preferred.
That is, as shown in FIG. 2A, the optical sheets 102 and 103 are temporarily attached by providing the adhesive member 100 to be bonded in a state where the non-adhesive region 106 ′ is partially formed by the predetermined opening 106. Even when reworking after fixing, the adhesive member 100 can be easily peeled off using, for example, tweezers 108 as shown in FIG.
Therefore, by providing such an opening, an illuminating device that is easy to rework without damaging the optical sheet or the frame can be obtained.

Further, as shown in FIGS. 3A to 3B, the non-adhesive region 106 ′ is a predetermined opening 106, and at least one opening 106 is provided on the side surface or the back surface of the frame body 14. It is preferable to provide the above.
The reason for this is that by configuring the opening as described above, a jig such as tweezers can be inserted through the opening provided on the side surface or the back surface, and even when the optical sheet or the like is reworked. This is because the adhesive member can be easily peeled off.
In addition, since one or more openings are provided, the optical sheet or the like can be reworked at an arbitrary position depending on the use of the lighting device.
Further, if it is an opening, even when the size of the opening is relatively small, for example, when the maximum diameter (or equivalent circle diameter) of the opening is 0.5 to 5 mm, Since a small jig such as tweezers can be inserted, it is possible to provide an illumination device with little light leakage to the outside.

Here, as shown in FIG. 3A, when the opening 106 is provided on the side surface of the frame, a jig 108 such as tweezers is inserted from the horizontal direction, and only the adhesive member 100 is moved in the vertical direction. It can be easily pinched and removed.
On the other hand, as shown in FIG. 3B, when the opening 106 is provided on the back surface of the frame, a jig 108 ′ such as a pin can be inserted from the vertical direction to lift the adhesive member 100. .
In order to prevent the adhesive member 100 from being damaged when the adhesive member 100 is lifted from below, the tip of the pin as a jig is provided with a flat portion or a round shape (spherical object). It is preferable to keep.
Furthermore, when a jig such as a pin is lifted from below, only the adhesive member 100 can be pushed up from below, so that it overlaps with the adhesive member 100 and does not overlap with the reflective sheet 105 and the optical sheets 102 and 103. It is also preferable to form the opening 106.

Further, the shape of the opening is V-shaped as shown in FIG. 3 (a), rectangular as shown in FIG. 4 (a), circular as shown in FIG. 3 (b), and FIG. 4 (b). It is preferable to use at least one selected from the group consisting of a semicircular shape as shown in FIG. 4 and an elliptical shape as shown in FIG.
The reason for this is that not only the openings can be easily formed, but also rework using these openings can be made easier.

For example, when the V-shaped opening 106 is formed as shown in FIG. 3A, it can be easily formed using a cutting device or the like, for example, and using the edge of the V-shaped opening, It is possible to easily insert and move jigs such as tweezers.
In addition, when the circular opening 106 is formed as shown in FIG. 3B, not only can it be easily formed using, for example, a drill, but also the jig such as a pin can be used using the circular opening. Insertion and movement can be easily performed. Further, with such an opening, it is possible to effectively prevent light leakage to the outside and entry of light and foreign matter from the outside.

In addition, when the rectangular (groove-shaped) opening 106 is formed as shown in FIG. 4A, for example, it can be formed integrally with the frame body 14 by using an injection molding machine or the like. By using the opening, it is possible to easily insert and move a jig such as tweezers.
In addition, when the semicircular or semielliptical opening 106 is used as shown in FIGS. 4B and 4C, it can be easily formed using, for example, an injection molding machine or a cutting device. Using these smooth side surfaces, jigs such as pins can be easily inserted and moved.

Further, as shown in FIGS. 5A to 5B, it is preferable to apply filling materials 106 a and 106 b inside or around the opening 106.
The reason for this is that by applying the filling materials 106a and 106b in this way, the mechanical strength can be maintained and light leakage from the opening to the outside can be effectively prevented. The filling materials 106a and 106b are filled only when it is determined as a non-defective product in an inspection such as a lighting test. That is, by filling the filling materials 106a and 106b only with good products that do not require reworking, the filling materials 106a and 106b can also function as marks for identifying the non-defective products.
Further, as shown in FIG. 5A, the filling material 106a is inserted into the opening 106, or as shown in FIG. 5B, the filling material 106b covers the periphery of the opening 106. Therefore, it is possible to effectively prevent foreign matters and moisture from entering the inside of the frame body from the outside.
As shown in FIG. 5A, as the filling material 106a filled in the opening 106, a thermoplastic resin such as an epoxy resin, an acrylic resin, a polyester resin, or a urethane resin containing a predetermined amount of a shielding material, or A thermosetting resin (including a photo-curable resin).
As shown in FIG. 5B, the filling material 106b covering the periphery of the opening 106 is preferably an adhesive member such as a shielding tape.

Further, as shown in FIGS. 6A to 6C, a curved surface portion 14b is provided at an end portion of the frame body 14, and the curved surface portion 14b serves as a non-adhesive region 106 ′ and is bonded along this. It is preferable that the end of the member 100 is pasted.
The reason for this is that, in the stage before the inspection such as the lighting test, the end of the adhesive member 100 is separated from the curved surface portion 14b as shown in FIG. As a result of the inspection, when it is determined that the product is a non-defective product and reworking of the optical sheet or the like is unnecessary, or when reworking of the optical sheet or the like is completed, the adhesive member 100 can bond the curved sheet as it is. Because.
Therefore, it is possible to effectively prevent a decrease in adhesion between the non-adhesion region and the adhesive member, light leakage from the curved surface portion, and the like.
Although not shown, it is preferable to further provide at least one V-shaped or circular opening on the side surface or the back surface of the curved surface portion at the end of the frame body.

In addition, as shown in FIG. 7, when the outer frame 15 is provided outside the frame body 14, a part of the outer frame 15 and a portion corresponding to the non-bonding region A frame opening 15 'is preferably provided.
The reason for this is that the optical sheet and the like can be taken out of the frame once and excellent reworkability can be obtained even when the outer frame is provided. is there.
The shape of the opening for the frame may be different from the shape of the opening in the frame, but the same as the shape of the opening in the frame so that jigs such as tweezers can be easily inserted and moved. Or it is preferable that it is a similar shape.
When the outer frame 15 is provided, it is preferable that the filling of the filling materials 106a and 106b and the bonding of the adhesive member 100 to the curved surface portion 14b described above be performed after the outer frame 15 is mounted.

[Second Embodiment]
As illustrated in FIG. 8, the second embodiment is a liquid crystal device 10 that includes a lighting device 120 and a liquid crystal panel 20, and the lighting device 120 includes a light source 101, a light guide plate 104, and a light guide plate. While having an optical sheet (not shown) and a frame 14 that accommodates these, the optical sheet and the frame 14 are arranged so as to overlap the outer edge of the optical sheet and the inner edge 14a of the frame 14. The frame member 14 is provided with an adhesive member (not shown) that adheres the optical sheet and the frame member 14 in a state where a non-adhesive region for partially non-adhering is formed. The liquid crystal device 10 is characterized by the following.
Hereinafter, the liquid crystal device of the second embodiment will be described focusing on differences from the illumination device of the first embodiment.
In the following description, a liquid crystal panel means an electric member in which a liquid crystal material is injected between a pair of substrates bonded with a sealing material, and a liquid crystal device means a flexible circuit in a liquid crystal panel. It shall mean an electrical member with a substrate, electronic component, light source, etc. attached thereto.

1. Basic Configuration (1) Liquid Crystal Panel First, the configuration of the liquid crystal panel 20 will be specifically described with reference to FIGS. 9 (a) to 9 (b) and FIG.
Here, FIG. 9A shows a cross-sectional view of the liquid crystal panel 20, FIG. 9B shows a plan view of the element substrate 60 in the liquid crystal panel 20 of FIG. 9A, and FIG. The perspective view corresponding to the external appearance of the liquid crystal panel 20 is shown.
In the liquid crystal panel 20, the counter substrate 30 and the element substrate 60 are bonded together by a sealing material (not shown) at their peripheral portions, and further, surrounded by the counter substrate 30, the element substrate 60 and the sealing material. The liquid crystal material 21 is basically enclosed in the gap and is basically configured.

  The substrate 31 of the counter substrate 30 is made of glass, plastic, or the like, and is formed on the substrate 31 on the color filters, that is, the colored layers 37r, 37g, and 37b and the colored layers 37r, 37g, and 37b. The counter electrode 33 is formed, and an alignment film 45 formed on the counter electrode 33 is provided. In addition, an insulating layer 41 for optimizing retardation is provided between the colored layers 37r, 37g, and 37b and the counter electrode 33 in the reflective region R.

  The counter electrode 33 is a planar electrode formed over the entire surface of the counter substrate 30 with ITO (indium tin oxide) or the like. In addition, the colored layers 37r, 37g, and 37b are disposed at positions facing the pixel electrode 63 on the element substrate 60 side, such as R (red), G (green), B (blue), or C (cyan), M (magenta), and Y. A color filter element of any color such as (yellow) is provided. A black mask or black matrix, that is, a light shielding film 39 is provided next to the colored layers 37 r, 37 g, and 37 b and at a position that does not face the pixel electrode 63.

The base 61 of the element substrate 60 facing the counter substrate 30 is also made of glass, plastic, or the like. On the base 61 of the element substrate 60, a TFT element 69 as an active element that functions as a switching element. And a pixel electrode 63 formed in an upper layer of the TFT element 69 with a transparent insulating film 81 interposed therebetween.
The TFT element 69 includes a gate electrode 71 formed on the element substrate 60, a gate insulating film 72 formed on the entire area of the element substrate 60 on the gate electrode 71, and the gate insulating film 72 interposed therebetween. A semiconductor layer 70 formed above the gate electrode 71, a source electrode 73 formed on one side of the semiconductor layer 70 via a contact electrode 77, and a contact electrode 77 on the other side of the semiconductor layer 70. And a drain electrode 66 formed therethrough.

The pixel electrode 63 is also formed as a light reflection film 79 (63a) for performing reflective display in the reflective region R, and is formed as a transparent electrode 63b with ITO or the like in the transmissive region T.
The light reflection film 79 as the pixel electrode 63a is formed of a light reflective material such as Al (aluminum) or Ag (silver). An alignment film 85 made of a polyimide polymer resin is formed on the pixel electrode 63, and the alignment film 85 is subjected to a rubbing process as an alignment process.

Further, a phase difference plate 47 is formed on the outside of the counter substrate 30, that is, on the upper surface in FIG. 9A, and a polarizing plate 49 is further formed thereon. Similarly, a phase difference plate 87 is formed on the outside of the element substrate 60, that is, on the lower surface of FIG. 9A, and a polarizing plate 89 is further formed therebelow.
That is, the liquid crystal device 10 as an electro-optical panel may be a liquid crystal panel using a TFT (Thin Film Transistor) element having a reflective transflective active matrix structure as described above, or depending on the application or the like. In addition, a liquid crystal panel using a TFD (Thin Film Diode) element may be used, and a passive matrix structure may be used.

(2) Lighting Device Although not shown, the lighting device described in the first embodiment is disposed below the element substrate 60.
In other words, as illustrated in FIG. 1, an illumination device 120 including a light source 101, a light guide plate 104, optical sheets 102 and 103 arranged to overlap the light guide plate 104, and a frame body 14 that accommodates these. The optical sheet 102 and the frame body 14 are fixed by an adhesive member 100 disposed so as to overlap the outer edge portion of the optical sheet 102 and the inner edge portion 14a of the frame body 14, and the frame body 14 is fixed to the optical sheet 102 and the frame body 14. An illuminating device 120 in which a non-adhesive region 106 ′ for partially non-adhering the body 14 is formed is disposed.

2. Operation In the liquid crystal device including the liquid crystal panel 20 as described above, external light such as sunlight or indoor illumination light enters the reflective region (R) of the liquid crystal device 10 from the counter substrate 30 side during reflective display. At the same time, it passes through the colored layer 37 (37r, 37g, 37b), the liquid crystal material 21, and the like and reaches the light reflecting film 79. Therefore, the light is reflected, passes through the liquid crystal material 21 and the colored layer 37 (37r, 37g, 37b) and the like again, and is recognized outside the liquid crystal device 10, whereby a reflective display is performed.
On the other hand, at the time of transmissive display, a backlight unit (not shown) is turned on, and light emitted from the backlight unit passes through a translucent transparent electrode 63b portion as a transmissive region (T). Through the colored layer 37 (37r, 37g, 37b), the liquid crystal material 21 and the like and recognized outside the liquid crystal device 10, transmissive display is performed.

  Even in the liquid crystal device 10 including such an illumination device 120, even when the optical sheet 102 is once fixed to the frame body 14 with the adhesive member 100 and then reworked, the non-adhesive region Using 106 ′ (opening 106), only the adhesive member 100 can be easily peeled off without damaging the optical sheets 102 and 103 and the frame 14.

[Third Embodiment]
As a third embodiment according to the present invention, an electronic apparatus provided with a predetermined liquid crystal device will be specifically described.

(1) Overview of Electronic Device FIG. 11 is a schematic configuration diagram showing the overall configuration of the electronic device of the present embodiment. This electronic device has a liquid crystal panel 20 and a control means 200 for controlling the liquid crystal panel 20. In FIG. 11, the liquid crystal panel 20 is conceptually divided into a panel structure 20 </ b> A and a drive circuit 20 </ b> B composed of a semiconductor element (IC) or the like. The control means 200 preferably includes a display information output source 201, a display processing circuit 202, a power supply circuit 203, and a timing generator 204.
The display information output source 201 includes a memory composed of a ROM (Read Only Memory), a RAM (Random Access Memory), etc., a storage unit composed of a magnetic recording disk, an optical recording disk, etc., and a tuning that outputs a digital image signal in a synchronized manner. It is preferable that the display information is supplied to the display processing circuit 202 in the form of an image signal or the like of a predetermined format based on various clock signals generated by the timing generator 240.

  The display processing circuit 202 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 to display the image. Information is preferably supplied to the drive circuit 20B together with the clock signal CLK. The drive circuit 20B preferably includes a first wiring pattern driving circuit, a second wiring pattern driving circuit, and an inspection circuit. Further, the power supply circuit 203 has a function of supplying a predetermined voltage to each of the above-described components.

(2) Specific examples Liquid crystal devices, organic electroluminescence devices, inorganic electroluminescence devices, etc. as predetermined electro-optical devices, plasma display devices, FED (field emission display) devices, LED (light emitting diode) display devices, electrophoretic displays Electronic devices to which devices, devices using thin cathode ray tubes, liquid crystal shutters, digital micromirror devices (DMD), etc. can be applied include personal computers and mobile phones, as well as liquid crystal televisions and viewfinders. Type / monitor direct-view type video tape recorder, car navigation device, pager, electronic notebook, calculator, word processor, workstation, videophone, POS terminal, electronic device with touch panel, and the like.

Furthermore, the electro-optical device and the electronic apparatus of the present invention are not limited to the illustrated examples described above, and it is needless to say that various modifications can be made without departing from the gist of the present invention.
For example, it may be an active matrix electro-optical device having a simple matrix structure, or may be applied to an active matrix electro-optical device using an active element (active element) such as a TFD (thin film diode). Can do.

ADVANTAGE OF THE INVENTION According to this invention, an adhesive member can be peeled without damaging an optical sheet etc., and the illuminating device excellent in rework properties, such as an optical sheet, a liquid crystal device and electronic equipment using such an illuminating device are provided. I can do it now.
Accordingly, the illumination device of the present invention includes a liquid crystal device provided with a switching element such as a TFT element and a TFD element, and an electronic device using the same, such as a mobile phone and a personal computer, a liquid crystal television, and a viewfinder type. -Monitor direct-view video tape recorder, car navigation device, pager, electrophoresis device, electronic notebook, calculator, word processor, workstation, videophone, POS terminal, electronic device with touch panel, device with electron-emitting device ( It can be widely applied to FED: Field Emission Display and SCEED: Surface-Conduction Electron-Emitter Display.

It is a figure provided in order to demonstrate the illuminating device in 1st Embodiment. (A)-(b) is a figure provided in order to demonstrate the rework property using the non-bonding area | region (opening part) in the illuminating device of 1st Embodiment, and it. (A)-(b) is a figure provided in order to demonstrate the number and position of the opening part in the illuminating device of 1st Embodiment. (A)-(c) is a figure provided in order to demonstrate the various shapes of the opening part in the illuminating device of 1st Embodiment. (A)-(b) is a figure provided in order to demonstrate the state which applied the filling material to the opening part in the illuminating device of 1st Embodiment. (A)-(c) is a figure provided in order to demonstrate another aspect of the non-bonding area | region in the illuminating device of 1st Embodiment. It is a figure provided in order to demonstrate the aspect of the illuminating device with which the outer side frame of 1st Embodiment is provided. (A)-(b) is the perspective view and sectional drawing of the liquid crystal device in 2nd Embodiment. (A)-(b) is the fragmentary sectional view and top view of the liquid crystal panel contained in the liquid crystal device in 2nd Embodiment. It is a perspective view of the liquid crystal panel contained in the liquid crystal device in a 2nd embodiment. It is a figure provided in order to demonstrate the electronic device in 3rd Embodiment. It is a disassembled perspective view for demonstrating the double-sided light shielding tape used for the manufacturing method of the conventional liquid crystal device. It is the elements on larger scale provided in order to demonstrate the liquid crystal device provided with the conventional illuminating device.

Explanation of symbols

10: liquid crystal device, 11: external terminal, 14: frame body, 14a: inner edge, 15: outer frame, 15 ': outer frame opening, 20: liquid crystal panel, 23: sealing material, 23a: injection hole, 25: Sealant, 30: counter substrate, 37 (37r, 37g, 37b): color filter, 60: element substrate, 60T: substrate overhang, 63: pixel electrode, 65 :: electrical wiring, 69: nonlinear element (TFT element) ), 75: Electric wiring, 79: Light reflection film, 85: Alignment film, 91: Semiconductor element, 100: Adhesive member (light-shielding double-sided tape), 101: Light source, 102 (102a, 102b): Optical sheet (prism sheet) , 103: optical sheet (diffusion sheet), 104: light guide plate, 105: reflection sheet, 106: opening, 106 ′: non-adhesive region, 108: tweezers, 120: lighting device

Claims (9)

An illumination device having a light source, a light guide plate, an optical sheet disposed to overlap the light guide plate, and a frame body that accommodates the optical sheet,
The optical sheet and the frame are fixed by an adhesive member disposed at a position overlapping the outer edge of the optical sheet and the inner edge of the frame,
A lighting device, wherein the frame body is formed with a non-bonding region in which the optical sheet and the frame body are partially non-bonded.   The non-bonding region is an opening formed so as to communicate from a bonding surface between the bonding member and the frame body to a side surface adjacent to the bonding surface of the frame body. Lighting equipment.   The non-bonding region is an opening formed so as to communicate with a back surface side of the bonding surface of the frame body from a bonding surface between the bonding member and the frame body. Lighting device.   The lighting device according to claim 2, wherein a filling material is applied inside or around the opening.   2. The lighting device according to claim 1, wherein the non-bonding region is a curved surface portion formed from an adhesive surface between the adhesive member and the frame body to a side surface adjacent to the adhesive surface of the frame body. .   2. An outer frame is provided outside the frame body, and an outer frame opening is provided at a part of the outer frame and corresponding to the non-adhesion region. The illuminating device as described in any one of -5. A liquid crystal device including an illumination device and a liquid crystal panel,
The illuminating device includes a light source, a light guide plate, an optical sheet placed on the light guide plate, and a frame body that accommodates these,
The optical sheet and the frame are fixed by an adhesive member disposed at a position overlapping the outer edge of the optical sheet and the inner edge of the frame,
2. A liquid crystal device according to claim 1, wherein a non-adhesive region in which the optical sheet and the frame are partially non-adhered is formed on the frame.   The liquid crystal device according to claim 7, wherein the adhesive member is a light-shielding double-sided tape, and further adheres the illuminating device and the liquid crystal panel to shield light.   An electronic apparatus comprising the liquid crystal device according to claim 7.

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