JP2009238397A - Illuminating device, liquid crystal device, and electronic equipment - Google Patents

Abstract

Provided are a lighting device, a liquid crystal device, and an electronic apparatus that are excellent in impact resistance by preventing bending of a holding member.
A liquid crystal device according to an embodiment includes a light guide plate having a plurality of convex portions 210a on a light incident side 211c and emitting illumination light from a light exit surface 211a, and an LED arrangement portion 210b of the light guide plate 210. The LED 12 is arranged between the LED 12 that emits light to the light incident side 211c side of the light guide plate 210 and the frame 300 that holds at least the light guide plate 210. The frame 300 is at least on the light incident side 211c of the light guide plate 210. It has a side wall part 350 that holds two adjacent sides facing each other, and a step part 360 that is provided corresponding to the light incident side 211c, and at least a part of the convex part 210a of the light guide plate 210 is The light exit surface 211c is engaged with the recess 210a.
[Selection] Figure 1

Description

  The present invention relates to a lighting device, a liquid crystal device, and an electronic apparatus.

  Currently, in various electronic devices such as mobile phones and portable information terminals, liquid crystal devices are used as display units for visually displaying various types of information. As an example of such a liquid crystal device, a structure including a liquid crystal panel, a backlight, and a frame (holding member) for housing the liquid crystal panel and the backlight is known. The liquid crystal panel is formed by sandwiching a liquid crystal layer between a first substrate and a second substrate having a projecting portion that projects from the first substrate.

Conventionally, the backlight frame has been designed to be as thick as possible in order to provide strength (see, for example, Patent Document 1).
JP 2005-302485 A

  However, when the frame is bent due to an impact when the module is dropped, the stress applied to the liquid crystal panel increases in proportion to the weight of the frame. There was a risk of cracks occurring in the overhanging portions of the two substrates.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an illumination device, a liquid crystal device, and an electronic apparatus that are excellent in impact resistance by preventing the holding member from being bent.

  In order to solve the above problems, the illumination device of the present invention has a plurality of convex portions on the light incident side and is arranged between the light guide plate that emits illumination light from the light exit surface and the convex portions of the light guide plate. A light source that emits light toward the light incident side of the light guide plate, and a holding member that holds at least the light guide plate, and the holding member is adjacent to at least the light incident side of the light guide plate. And a side wall portion that holds two sides facing each other, and the locking portion provided along the light incident side, and at least a part of the convex portion is formed on the locking portion. It is mounted on the light exit surface side.

  According to the illumination device of the present invention, since the light guide plate held by the holding member has at least a part of the convex portion provided on the light incident side thereof placed on the light emission surface side of the locking portion, For example, it can be suppressed by the convex portion of the light guide plate that the holding member tries to bend toward the light exit surface side of the light guide plate when dropped. Thereby, it is possible to prevent the holding member from being bent toward the light exit surface side of the light guide plate and to prevent the holding member from being damaged. Therefore, it can be set as the illuminating device excellent in impact resistance. Further, even if the holding member is bent due to an impact at the time of dropping, an excessive stress is not applied to the light guide plate.

Moreover, it is preferable that a locking concave portion in which at least a part of the convex portion is locked is formed on a surface of the locking portion on the light emission surface side.
According to the present invention, it is possible to prevent the light guide plate from being displaced in the surface direction with respect to the holding member by locking at least a part of the convex portion of the light guide plate in the lock recess. Thereby, positioning of the light guide plate with respect to the holding member is facilitated, and the light guide plate can be favorably held in the holding member.

The illuminating device of the present invention has a plurality of convex portions on the light incident side, and is disposed between the light guide plate that emits illumination light from the light exit surface and the convex portions of the light guide plate, and the light of the light guide plate. A light source that emits light toward the incident side, and a holding member that holds at least the light guide plate, and the holding member includes at least two sides that are adjacent to the light incident side of the light guide plate and face each other. A fitting having a side wall portion to be held and a locking portion provided along the light incident side, and inserting at least a part of the convex portion of the light guide plate into an inner wall surface of the locking portion. A recess is formed.
According to the illumination device of the present invention, the light guide plate held by the holding member is held from both sides in the thickness direction of the light guide plate by inserting the convex portions provided on the light incident side into the insertion portion of the holding member. Therefore, it is possible to prevent the holding member from being bent toward the light exit surface side of the light guide plate when dropped. Therefore, it can be set as the illuminating device excellent in impact resistance. Further, even if the holding member is bent due to an impact at the time of dropping, an excessive stress is not applied to the light guide plate.

In addition, it is preferable that a protruding portion protruding outward from the protruding portion is formed on a side surface of the protruding end of the protruding portion, and the protruding portion is locked to the locking portion.
According to such a configuration, it is possible to effectively prevent the holding member from being bent at the time of dropping while securing the strength of the holding member and the light guide plate.

It is also preferable that a plurality of light sources are provided, the light guide plate is provided with a plurality of convex portions, and the plurality of light sources are disposed in a region between the plurality of convex portions.
According to such a configuration, the force that suppresses the bending of the holding member is increased by the plurality of convex portions provided on the light guide plate according to the number of light sources, and thus the holding member is bent toward the light exit surface side of the light guide plate. It becomes possible to hold down more.

Moreover, it is preferable that the said latching | locking part has an area | region where a cross-sectional area is smaller than the said side wall part at least partially.
According to such a configuration, it is possible to reduce the area of the holding member, particularly in the locking portion.

Moreover, it is also preferable that the said convex part and the said latching | locking part are being fixed with the adhesive agent.
According to such a configuration, the light guide plate can be reliably held by the holding member. Moreover, it becomes possible to further suppress the bending of the holding member (the bending of the light guide plate toward the light exit surface).

Moreover, it is also preferable that the convex portion of the light guide plate is provided in the vicinity of corner portions of the holding member at both ends of the locking portion.
According to such a configuration, it is possible to more effectively suppress the bending of the holding member by providing the convex portions on both sides of the light incident side of the light guide plate, that is, in the vicinity of the corner portions of the light guide plate.

A liquid crystal device according to the present invention includes the above-described illumination device and a liquid crystal panel that modulates light from the illumination device.
According to the liquid crystal device of the present invention, since the light guide plate includes the illumination device configured to suppress the bending of the holding member, it is possible to suppress the impact when falling to the liquid crystal panel. Therefore, the stress applied to the electro-optical panel is reduced, and it is possible to prevent the panel from being damaged when dropped. Therefore, a liquid crystal device having excellent impact resistance can be obtained.

  According to the present invention, since the liquid crystal device having excellent impact resistance is provided, it is possible to obtain an electronic device that ensures high reliability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the film thicknesses and dimensional ratios of the respective components are appropriately changed in order to make the drawings easy to see.

(First embodiment)
Hereinafter, as an embodiment according to the present invention, a liquid crystal device including the illumination device of the present invention will be described as an example. FIG. 1 is an exploded perspective view of the liquid crystal device according to the present embodiment. 2A and 2B are cross-sectional views showing the main part of the liquid crystal device according to the present embodiment, in which FIG. 2A is a cross-sectional view of the liquid crystal device at the portion indicated by AA in FIG. 1, and FIG. It is sectional drawing of the liquid crystal device of the part shown by. 3A is a plan view illustrating the schematic configuration of the light guide plate, and FIG. 3B is a perspective view thereof. FIG. 4 is a plan view illustrating the schematic configuration of the frame. (B) is a perspective view which shows the principal part of a flame | frame, FIG. 6 is sectional drawing which shows the principal part structure at the time of accommodation of the flame | frame and light-guide plate in FIG.2 (b).

  As shown in FIG. 1, the liquid crystal device 1 includes a liquid crystal panel 100, a driving FPC (Flexible Printed Circuit) substrate 10 connected to the liquid crystal panel 100, and a backlight 200 disposed on the back side of the liquid crystal panel 100. (Illumination device) and a frame 300 (holding member) for housing the liquid crystal panel 100 and the backlight 200. Furthermore, the liquid crystal device 1 of the present embodiment includes a light source FPC board 18 including a plurality of LEDs 12 that serve as the light source of the backlight 200 in addition to the driving FPC board 10 that drives the liquid crystal panel 100.

  As shown in FIGS. 1 and 2, the liquid crystal panel 100 includes a first substrate 3, a second substrate 2 having a projecting portion 2 a that projects from the first substrate 3, and the first substrate 3 and the second substrate 2. A liquid crystal layer 50 as an electro-optical material disposed in a space formed by the sealing material 52 provided on the peripheral edge of the substrate for bonding, the first substrate 3, the second substrate 2, and the sealing material 52; It has the 1st polarizing plate 8a and the 2nd polarizing plate 8b provided so that a pair of board | substrates 2 and 3 may be pinched | interposed. The first substrate 3 and the second substrate 2 are made of translucent glass, plastic, or the like.

  A plurality of pixel electrodes 9 made of an ITO (Indium / Tin Oxide) film and an alignment film made of polyimide or the like are formed so as to cover the pixel electrodes 9 on the surface of the second substrate 2 facing the first substrate 3. ing. On the other hand, a counter electrode 21 made of an ITO film is provided on the surface of the first substrate 3 facing the second substrate 2, and an alignment film made of polyimide or the like is formed so as to cover the counter electrode 21. Here, the pixel electrode 9, the counter electrode 21 and the alignment film covering them are formed by a known technique, and are not shown in FIG.

  On the projecting portion 2a, for example, a driving IC 23 and input terminals (not shown) necessary for driving the liquid crystal panel 100 are connected. By connecting an external power source and various external devices to the input terminal, a drive signal and power can be supplied to the liquid crystal panel 100 via the FPC board 10. The FPC board 10 is made of, for example, FPC having excellent flexibility, for example, using a film made of polyimide, polyester, or the like as a base material.

  The backlight 200 is a substantially rectangular light guide plate 210 with the light emission surface 211a facing the second substrate 2 side of the liquid crystal panel 100, and a light source accommodated in the LED placement portion 210b of the light guide plate 210 when assembled as the liquid crystal device 1. A light source FPC board 18 having the LED 12, and a diffusion plate 222 as a rectangular sheet-like optical component disposed in order from the light guide plate 210 toward the liquid crystal panel 100 between the liquid crystal panel 100 and the light guide plate 210. It has two prism sheets 220 and 221 and a reflection plate 223 as a rectangular sheet-like optical component that is laminated on the back surface 211b of the light guide plate 210 opposite to the light exit surface 211a. ing.

  A prism sheet 220 is bonded to the light source FPC board 18 via an adhesive sheet 24. The adhesive sheet 24 and the prism sheet 220 are provided with a plurality of holes 24a and 220a corresponding to the respective LEDs 12 of the light source FPC board 18, and the LEDs 12 are inserted into the holes 24a and 220a at the time of bonding. It is exposed on the back side (light guide plate 210 side).

  As shown in FIG. 1, the frame 300 has a substantially frame shape, specifically a frame shape in which a rectangular central portion is hollowed in the present embodiment, and is formed of a resin such as polycarbonate, fluororesin, or ABS. . The frame 300 is provided with recesses 300a corresponding to the plurality of protrusions 210e of the light guide plate 210 and recesses 300b corresponding to the protrusions 210f. The light guide plate 210 is fixed to the frame 300 by fitting the protrusions 210e and 210f into the recesses 300a and 300b, respectively.

  In the frame 300, the liquid crystal panel 100 is held on the light emission surface 211a of the light guide plate 210 with the second substrate 2 (second polarizing plate 8b) side facing.

  The liquid crystal device according to the present embodiment is characterized by the light guide plate 210 and the frame 300. Hereinafter, the structure of the light guide plate 210 and the frame 300 will be described in detail with reference to FIGS.

  As shown in FIGS. 3A and 3B, the light guide plate 210 of the present embodiment has a plurality of LED arrangement portions 210b and a plurality of convex portions on the light incident side 211c side on which the light from the LEDs 12 is incident. 210a are alternately present. Each convex part 210a is provided with a claw part 212 (protrusion part) that protrudes further outward from its upper edge. The upper surface of the claw portion 212 is flush with the light exit surface 211a, and the thickness T1 is designed to be about half or less than the thickness T2 of the convex portion 210a. Further, the width W1 of the claw portion 212 is designed to be about half the width W2 of the convex portion 210a. However, the thickness T1 of the convex portion 210a, the thickness T2 of the convex portion 210a, or the width W1 of the claw portion 212 and the width W2 of the convex portion are designed to have a strength that can withstand a drop impact during normal use. .

  It is preferable that one convex portion 210a is disposed at each end of the light incident side 211c. When the convex part 210a exists in the position away from the corner | angular part, the bending of the flame | frame 300 will become large by the impact at the time of dropping. Therefore, it is desirable to arrange the convex portions 210a one by one at both ends of the light incident side 211c, that is, at the corners of the light guide plate 210 or in the vicinity thereof.

  In addition, on the side surfaces 211 d and 211 d extending in the longitudinal direction of the light guide plate 210, a plurality of protrusions 210 e and 210 f are arranged with their positions being alternately changed in the thickness direction of the light guide plate 210.

  On the light exit surface 211a of the light guide plate 210 or on the back surface thereof, a light exit region A for equalizing the amount of emitted light in the surface direction is provided. The light emission area A is sized to cover at least the display area of the liquid crystal panel 100, and a large number of fine convex portions (hereinafter referred to as fine convex portions) are formed. The aggregate density of the fine protrusions (indicated by the gradation in FIG. 3A) is configured to increase as the distance from the light incident side 211c increases, so that the light incident from the light incident side 211c is within the light exit surface 211a. A uniform amount will be injected.

  As shown in FIGS. 2 and 4, the frame 300 is a frame-shaped holding member that holds the light guide plate 210 and the liquid crystal panel 100 described above, and has a central portion from the viewpoint of heat dissipation, weight reduction, and thickness reduction. An opening 302 is provided. The opening 302 is formed in a size along the outer shape of the light guide plate 210, and the light guide plate 210 (FIG. 1) is fitted and accommodated therein.

  The frame 300 includes a side wall part 350 constituting an outer frame and a step part 360 formed inside the side wall part 350. The side wall part 350 and the step part 360 are integrally formed by injection molding. . The height H (FIG. 2) of the side wall 350 is a dimension that allows the thickness direction of the liquid crystal panel 100, so that the accommodated liquid crystal panel 100 does not protrude from the frame 300.

  The frame 300 has a stepped portion 360 that supports at least a part of the peripheral edge of the liquid crystal panel 100, and does not support the four corners of the liquid crystal panel 100 and the vicinity thereof. The stepped portion 360 is configured not to support the corner of the liquid crystal panel 100 and the vicinity thereof, but also to support the periphery of the overhanging portion 2a including two adjacent corners, and supports other portions. Thus, the liquid crystal panel 100 can be held in the frame 300.

  The stepped portion 360 provided so as to protrude to the inside of the side wall portion 350 is substantially perpendicular to the inner peripheral surface 35a of the side wall portion 350 and has a height position different from that of the upper surface 35b of the side wall portion 350. A surface 361 is provided. The main surface 361 includes a panel support region including the first surfaces 36a, 36a, and 36f, the second surfaces 36e, 36c, and 36c, the first inclined surfaces 36b and 36b, and the second inclined surfaces 36d, 36d, 36g, and 36g. Panel non-supporting region (region shown with a pattern in FIG. 4), and this panel non-supporting region is lower than the panel supporting region (region in contact with the liquid crystal panel 100). Yes.

  As shown in FIGS. 4 and 5 (a), the first surfaces 36a and 36a along the longitudinal direction of the frame 300 have first end surfaces 36a and 36a on one end side via first inclined surfaces 36b and 36b, respectively. The second surfaces 36c and 36c are connected to each other such that the end portions of the second surfaces 36c and 36c abut the end portions of the second surface 36e along the short direction of the frame 300. . The first inclined surfaces 36b and 36b are inclined surfaces that are inclined downward from the first surfaces 36a and 36a toward the corners of the frame 300, that is, toward the second surfaces 36c and 36c, and are located at height positions. The first surfaces 36a and 36a and the second surface 36e having different positions are connected via the first inclined surfaces 36b and 36b and the second surfaces 36c and 36c. As described above, the second surface 36c, 36c, 36e that overlaps the projecting portion 2a of the liquid crystal panel 100 is formed low so that the projecting portion 2a is not supported.

  On the other hand, the other end side of the first surfaces 36a and 36a is connected to the second inclined surfaces 36d and 36d, respectively, as shown in FIGS. 4 and 5B. Further, second inclined surfaces 36g and 36g are connected to both ends of the first surface 36f along the short direction of the frame 300 and opposed to the second surface 36e, respectively. The second inclined surfaces 36d and 36d and the second inclined surfaces 36g and 36g are connected so that the ends of the frames 300 abut each other at the corners of the frame 300. The second inclined surfaces 36d and 36d are inclined surfaces inclined downward from the first surfaces 36a and 36a toward the top of the corner, so that the top of the corner of the frame 300 is lowest (deep). It is configured. And these 2nd inclined surfaces 36d, 36d, 36g, and 36g are set as the structure which does not support the corner | angular part located in the area | region other than the area | region which overlaps with the protrusion part 2a of the liquid crystal panel 100, and its vicinity.

  The tops of the four corners of the frame 300 and the second surfaces 36c and 36c and the second surface 36e in the vicinity of the corners have the same height (depth), and the corners of the liquid crystal panel 100 and the vicinity thereof. It is arranged to be the most distant from the panel in the panel thickness direction. In addition, you may make it form the corner | angular part of the flame | frame 300 respectively corresponding to the corner | angular part of the overhang | projection part 2a used as the single board | substrate lower than another corner | angular part.

  As described above, the plurality of first inclined surfaces 36b and 36b and the second inclined surfaces 36d, 36d, 36g, and 36g are provided to form a main surface 361 having a difference in height in the circumferential direction.

  As shown in FIGS. 4 and 5A, the frame 300 of this embodiment has a step portion corresponding to the light incident side 211c of the light guide plate 210 (FIG. 3) and extending in the short direction of the frame 300. A plurality of locking recesses 300c for locking the claw portions 212 of the convex portions 210a of the light guide plate 210 are provided in 360A (locking portions) according to the number of the convex portions 210a. The locking recess 300c is formed so as to be recessed from the first surface 36e in the thickness direction of the stepped portion 360A. The light guide plate 210 is positioned with respect to the frame 300 only by locking the claw portion 212 of the convex portion 210a of the light guide plate 210 in the locking recess 300c.

  In the state where the light guide plate 210 is accommodated in the frame 300 described above, that is, in the state where the claw portion 212 of the light guide plate 210 is fitted in the locking recess 300c of the frame 300, as shown in FIG. The inner surface 212A of the claw portion 212 is opposed to 6e. In the present embodiment, with respect to the light incident side 211c side of the light guide plate 210, the claw portions 212 of the respective convex portions 210a are engaged with the locking concave portions 300c from the light emitting surface 211a side, thereby causing the frame 300 to move upward (light emission). Movement in the direction of the surface 221a) is restricted.

  Further, as described above, with respect to the side surfaces 211d and 211d (FIG. 1) of the light guide plate 210, the protrusions 210e and 210f are fitted in the corresponding recesses 300a and 300b of the frame 300, respectively, so Movement is restricted. In this way, the light guide plate 210 is attached to the frame 300.

  Returning to FIG. 2, in the present embodiment, the impact relaxation members 355 having elasticity are arranged on the second surface 36 c connected to the first inclined surface 36 b of the frame 300. By interposing the impact relaxation member 355 in a region corresponding to the vicinity of the corner of the liquid crystal panel 100 to be accommodated, the gap between the liquid crystal panel 100 and the frame 300 can be partially filled. It becomes possible to accommodate well. Further, the stepped portion 360 formed with the second surfaces 36c, 36c, and 36e is easy to bend because the plate thickness is thinner than other regions, but an impact reducing member 355 or the like is interposed between the liquid crystal panel 100 and the like. By making it let it bend, the bending of the flame | frame 300 at the time of dropping etc. can be suppressed.

  As described above, in the light guide plate 210 held by the frame 300, the claw portions 212 of the plurality of convex portions 210a provided on the light incident side 211c are respectively fitted into the respective locking concave portions 300c of the frame 300. It is held in the frame 300. Therefore, for example, when the liquid crystal device 1 is dropped, the claw portion 212 (convex portion 210a) of the light guide plate 210 prevents the frame 300 from bending toward the main surface 361 side (the light emission surface 211a side of the light guide plate 210). Can do. By suppressing the bending of the frame 300 by the light guide plate 210, it is possible to suppress the stress of the liquid crystal panel 100 held by the frame 300 from being applied, so that the liquid crystal panel 100 can be prevented from being damaged. It becomes possible.

  In the present embodiment, the thickness of one side (stepped portion 360A) in the short direction of the frame 300 corresponding to the projecting portion 2a of the liquid crystal panel 100 is formed thin, so that the weight of the frame 300 is reduced. ing. Conventionally, a structural design that is as thick as possible has been made in order to ensure the strength of the frame 300. However, when the frame 300 is bent due to an impact when the module is dropped, if the weight of the frame 300 is large, the stress applied to the liquid crystal panel 100 increases accordingly, and a weak portion of the liquid crystal panel 100 (single substrate) There is a possibility that the protruding portion 2a) of the liquid crystal panel 100 is damaged.

  On the other hand, in the present embodiment, the entire frame 300 is reduced in weight, such as by reducing the thickness of the stepped portion 360A corresponding to the protruding portion 2a of the liquid crystal panel 100, and dropped by the light guide plate 210. It is possible to suppress the movement of the frame 300 by suppressing the inertial force of the frame 300 due to the impact at the time, and to prevent the frame 300 from being bent toward the liquid crystal panel 100 side. That is, by fitting the plurality of convex portions 210a provided on the light guide plate 210 to the respective locking concave portions 300c of the frame 300 from the light emission surface 211a side, the frame 300 is moved to the light emission surface 211a side by an impact at the time of dropping. The light guide plate 210 can suppress the bending. Even if the frame 300 is slightly bent due to an impact at the time of dropping, the liquid crystal panel 100 is not excessively stressed, so that the liquid crystal panel 100 is not damaged.

Further, in the present embodiment, since the convex portions 210a and 210a are respectively disposed on both ends of the light incident side 211c of the light guide plate 210, the convex portions 210a and 210a are bent at the corners of the frame 300 and in the vicinity thereof. It becomes possible to hold down. Further, by adopting a configuration in which the convex portion 210 a is fitted in the locking concave portion 300 c of the frame 300, it is possible to prevent a deviation in the surface direction of the light guide plate 210 with respect to the frame 300.
Note that the claw portion 212 of the light guide plate 210 may be fixed to the locking recess 300 c of the frame 300. Thereby, the bending of the frame 300 can be more effectively suppressed.

  Further, the claw portion 212 provided on the convex portion 210a has a shape having a strength that can sufficiently suppress the bending of the frame 300 due to a drop impact during normal use. At the same time, the same can be said for the configuration of the convex portion 210a.

  As described above, since the light guide plate 210 can effectively suppress the frame 300 from being bent due to an impact at the time of dropping, the liquid crystal panel 100 is restrained from being stressed. Therefore, it is possible to obtain a liquid crystal device excellent in impact resistance that can prevent breakage such as cracking of the liquid crystal panel 100. Therefore, product reliability can be ensured.

  Moreover, since the panel non-supporting region of the frame 300 is formed thin, the frame 300 can be reduced in weight.

  The side wall 350 is formed with the opening 320 for allowing the driving FPC board 10 to pass therethrough. In addition to the openings 320 and 330, the side wall 350 has a heat dissipation of the frame 300. Some openings for weight reduction may be provided.

(Second Embodiment)
FIG. 7 is a perspective view showing a main part of the frame of the second embodiment.
As shown in FIG. 7, the frame 400 according to the present embodiment includes a plurality of insertion recesses 400 c corresponding to the respective protrusions 210 a of the light guide plate 210 on the inner surface 360 a side of the stepped portion 360 </ b> A. And the light guide plate 210 is hold | maintained at the flame | frame 400 by inserting each convex part 210a of the light guide plate 210 in each said insertion recessed part 400c, respectively.

  According to such a configuration, the convex portion 220a of the light guide plate 210 can prevent the frame 400 from being bent toward the light exit surface 211a side of the light guide plate 210 when dropped, as in the above embodiment. Further, since the protrusion 220 a of the light guide plate 210 is inserted into the insertion recess 400 c of the frame 300, the movement of the light guide plate 210 in the thickness direction with respect to the frame 400 is restricted. It is also possible to suppress bending to the side opposite to the light exit surface 211a. Thus, since it can prevent that the liquid crystal panel 100 is stressed by hold | suppressing the bending of the flame | frame 400, it becomes possible to eliminate that a panel crack arises by the impact at the time of dropping. Therefore, a liquid crystal device excellent in impact resistance can be obtained.

  The preferred embodiments according to the present invention have been described above with reference to the accompanying drawings. However, it goes without saying that the present invention is not limited to such examples, and the above embodiments may be combined. It is obvious for those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims. It is understood that it belongs to.

  For example, the shape of the convex portion 210a and the claw portion 212 of the light guide plate 210 is not particularly limited as long as the movement of the frame 300 to the liquid crystal panel 100 side can be suppressed and the movement can be suppressed. For example, it is possible to adopt a configuration in which the claw portion 212 is not provided and the convex portion 210a is locked to the locking portion. However, if the shape of the convex part 210a or the claw part 212 is large, the locking concave part 300c of the frame 300 corresponding to this must be formed large, and the area where the thickness of the step part 360A becomes thin increases. It is not preferable from the viewpoint of strength. Therefore, the direction in which the claw portion 212 provided at the tip of the convex portion 210 a is locked to the frame 300 can suppress the bending of the frame 300 in a smaller area than the case where the entire convex portion 210 a is locked to the frame 300. it can. Also, when the width W2 of the convex portion 210a is narrowed to reduce the area locked to the frame 300, an impact at the time of dropping is applied to the base portion of the convex portion 210a depending on the extended length (projection amount) of the convex portion 210a. Since there is a possibility, it is preferable to select the shape of the convex part 210a in consideration of this.

(Electronics)
Next, a specific example of an electronic apparatus including the above electro-optical device will be described.
FIG. 8A is a perspective view showing an example of a mobile phone. In FIG. 8A, reference numeral 600 denotes a mobile phone main body, and reference numeral 601 denotes a liquid crystal display unit including the liquid crystal display device of the above embodiment. FIG. 8B is a perspective view showing an example of a portable information processing apparatus such as a word processor or a personal computer. In FIG. 8B, reference numeral 700 denotes an information processing device, 702 denotes an input unit such as a keyboard, 703 denotes an information processing body, and 702 denotes a liquid crystal display unit including the liquid crystal display device of the above embodiment. FIG. 8C is a perspective view showing an example of a wristwatch type electronic device. In FIG. 8C, reference numeral 800 denotes a wristwatch body, and 801 denotes a liquid crystal display unit including the liquid crystal display device of the above embodiment. Although the electronic apparatus of the present embodiment includes a liquid crystal display device, it may include other electro-optical devices such as an organic EL display device and a PDP. Further, the electronic device is not limited to these, and can be applied to various electronic devices having a display function.
For example, in addition to these, a fax machine with a display function, a finder for a digital camera, a portable TV, an electronic notebook, an electric bulletin board, a display for advertising, etc. are also included.

  According to the electronic apparatus of the present embodiment, as described above, the liquid crystal device 1 having excellent impact resistance is provided as a display unit, so that the reliability is high.

  In addition to the mobile phone, the electronic device of the present invention includes, for example, an electronic notebook, a personal computer, an electronic book, a viewfinder type, a monitor direct view type video tape recorder, a car navigation device, a pager, an electronic notebook, a calculator, and a word processor. , Workstations, videophones, POS terminals and the like.

1 is an exploded perspective view of a liquid crystal device according to an embodiment of the present invention. 2A and 2B are cross-sectional views illustrating a schematic configuration of a liquid crystal device according to an embodiment of the present invention, in which FIG. 1A is a cross-sectional view taken along the line AA in FIG. The top view which shows schematic structure of a flame | frame. The perspective view which shows the principal part of a flame | frame. The perspective view which shows the structure in the corner | angular part of a flame | frame, and its vicinity (inclined surface). The principal part expanded sectional view of FIG.2 (b). Other embodiments of the frame. The electronic device which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Liquid crystal device, 2 ... 2nd board | substrate, 2a ... Overhang | projection part, 3 ... 1st board | substrate, 36b, 36b ... 1st inclined surface, 36d, 36d, 36g, 36g ... 2nd inclined surface, 52 ... Sealing material, 100 ... Liquid crystal panel, 200 ... Backlight (illumination device), 210a ... convex part, 210b ... LED placement part, 211c ... light incident side, 211a ... light exit surface, 212 ... nail part (protrusion part), 300 ... frame (holding) Member), 300c ... locking recess, 360A ... stepped portion (locking portion), 360 ... stepped portion, 350 ... side wall, 361 ... main surface, 355 ... impact mitigating member, 400 ... frame of the second embodiment, 400c ... Indentation recess

Claims (10)

A light guide plate having a plurality of convex portions on the light incident side and emitting illumination light from the light exit surface;
A light source disposed between the recesses of the light guide plate and emitting light to the light incident side of the light guide plate;
A holding member for holding at least the light guide plate,
The holding member includes at least a side wall portion that holds two sides of the light guide plate that are adjacent to and opposite to each other, and a locking portion that is provided along the light incident side.
At least a part of the convex portion of the light guide plate is placed on the light exit surface side of the locking portion.   The lighting device according to claim 1, wherein a locking concave portion in which at least a part of the convex portion is locked is formed on a surface of the locking portion on the light emission surface side. A light guide plate having a plurality of convex portions on the light incident side and emitting illumination light from the light exit surface;
A light source disposed between the convex portions of the light guide plate and emitting light to the light incident side of the light guide plate;
A holding member for holding at least the light guide plate,
The holding member includes at least a side wall portion that holds two sides of the light guide plate that are adjacent to and opposite to each other, and a locking portion that is provided along the light incident side.
A fitting recess in which at least a part of the projection of the light guide plate is fitted is formed on the inner wall surface of the locking portion.   The protrusion part which protrudes outside from the said convex part is formed in the front end side surface of the direction where the said convex part protrudes, The said protrusion part is latched by the said latching | locking part. The illuminating device as described in any one of thru | or 3. A plurality of the light sources are provided,
The light guide plate is provided with a plurality of the convex portions,
5. The lighting device according to claim 1, wherein the plurality of light sources are arranged in a region between the plurality of convex portions.   The lighting device according to any one of claims 1 to 5, wherein the locking portion has a region having a cross-sectional area smaller than that of the side wall portion at least in part.   The lighting device according to claim 1, wherein the convex portion and the locking portion are fixed by an adhesive.   The lighting device according to claim 1, wherein the convex portion of the light guide plate is provided in the vicinity of a corner portion of the holding member at both ends of the locking portion.   A liquid crystal device comprising: the illumination device according to claim 1; and a liquid crystal panel that modulates light from the illumination device.   An electronic apparatus comprising the liquid crystal device according to claim 9.

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