JP3744299B2 - ELECTRO-OPTICAL DEVICE, MANUFACTURING METHOD THEREOF, AND ELECTRONIC DEVICE - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electro-optical device configured using an electro-optical material such as a liquid crystal or an EL (electroluminescence) element, and a method for manufacturing the same. The present invention also relates to an electronic apparatus such as a mobile phone configured using the electro-optical device.
[0002]
[Prior art]
At present, various electro-optical devices configured using various electro-optical materials are known. For example, a liquid crystal device using a liquid crystal as an electro-optical material, an organic EL device using an EL element including a light emitting polymer as an electro-optical material, a phosphor, an inert gas, xenon, etc. as an electro-optical material. Various electro-optical devices such as a plasma display panel (PDP) used and an optical device using a field emission element (FED) as an electro-optical material are known.
[0003]
The electro-optical device includes a panel formed by supporting an electro-optical material with a substrate, a control board including a control circuit for controlling the panel, and a support member that supports the panel and the control board. There is an electro-optical device of structure. For example, when a liquid crystal device is considered as an electro-optical device, a liquid crystal having a structure in which a liquid crystal panel as a panel is mounted on a light emitting surface of a light guide acting as a support member and a control substrate is mounted on the opposite surface of the light guide. There is a device.
[0004]
[Problems to be solved by the invention]
In the liquid crystal device as described above, it is desirable that the mounting position of the control board with respect to the light guide is always a constant position, and various inconveniences occur when the mounting position varies.
[0005]
For example, in a liquid crystal device, in many cases, a liquid crystal panel supported by a light guide and a control board also supported by the light guide are electrically connected to each other by a conductive connection member such as an FPC (Flexible Printed Circuit). Is done. In this case, if there is variation in the mounting position of the control board with respect to the light guide, the terminals of the conductive connection member are very aligned when conducting the conductive connection process, for example, the soldering process, to the terminal of the control board, that is, the land. was difficult.
[0006]
In the conventional liquid crystal device, when the control board is mounted on the light guide, the position of the control board relative to the light guide is determined by the visual observation of the operator. For this reason, the mounting position of the control board with respect to the light guide body inevitably tends to vary, and soldering and other various processes may be difficult.
[0007]
The present invention has been made in view of the above-described problems, and improves the alignment accuracy between the control board and the support member in the electro-optical device, and further improves the assembly of the control board and the support member. The purpose is to improve workability.
[0008]
[Means for Solving the Problems]
(1) In order to achieve the above object, an electro-optical device according to the present invention includes a panel in which an electro-optical material is supported by a substrate and an FPC is disposed on the substrate, a control substrate having a control circuit, In the electro-optical device having the panel and a support member that supports the control board, the support member is provided with a protrusion and a notch, and the control board is provided with a hole, and the control board Is disposed at a predetermined position of the support member, the protrusion passes through the hole, and the FPC is conductively connected to the control board through the notch.
[0009]
According to the electro-optical device configured as described above, the mounting position of the control board with respect to the support member is always determined to be a fixed position by fitting the hole of the control board into the protrusion of the support member. And the work at this time is a very simple work of simply fitting the hole into the protrusion, and it is not necessary to perform the inaccurate and troublesome work of positioning the control board and the support member by visual observation, so that the workability is very high. Very expensive. In addition, since the mounting position of the control board with respect to the support member is always determined to be a fixed position, the subsequent processing of soldering the FPC terminal to the control board terminal with respect to the control board can be performed with high positional accuracy. it can.
[0010]
(2) In the electro-optical device according to (1), it is preferable that at least two protrusions are provided on the support member, and at least two holes are provided on the control board corresponding to the protrusions. desirable. If there is one protrusion and one hole fitted in it, the control board may rotate around the protrusion and cause a positional shift, but if two or more pairs of protrusions and holes are provided, the position due to such rotation Deviation can be prevented.
[0011]
(3) In the electro-optical device according to the above item (2), it is desirable that at least one of the holes has a shape in which a part is released to the outside. By doing in this way, the operation | work which fits the said protrusion in the said hole can be performed more easily.
[0012]
(4) In the electro-optical device according to any one of the above items (1) to (3), a plurality of the FPCs are disposed on the panel, and a plurality of the notch portions are also provided on the support member. It is desirable to be provided.
Some electro-optical devices have a structure in which a plurality of the FPCs are provided. For example, when a liquid crystal device is considered as an electro-optical device, the FPC may be connected to different sides of the liquid crystal panel and extend in directions perpendicular to each other. The electro-optical device according to the present invention in which the protrusion of the support member is passed through the hole of the control board is advantageous when applied to an electro-optical device having such a plurality of conductive connection members. Since the position of the control board with respect to the support member is always determined to be a fixed position by fitting the protrusion and the hole, even when there are a plurality of FPCs, the terminals of these FPCs can be easily and accurately passed through the notch. This is because it can be aligned with the terminal.
[0014]
(5) In the electro-optical device according to at least one of the above items (1) to (4), it is preferable that the protrusion has a conical shape smaller than the hole. In this way, the protrusion of the support member can be reliably inserted into the hole of the control board.
[0015]
(6) In the electro-optical device according to any one of (1) to (4), the protrusion has a shape in which a conical portion is formed at a tip of a cylindrical portion, and the cylinder Preferably, the outer diameter of the portion is smaller than the hole, and the diameter of the bottom surface of the conical portion is larger than the hole. According to this configuration, the control board can be firmly pressed and supported by the conical portion provided at the tip of the protrusion so as not to move.
[0016]
(7) In the electro-optical device according to any one of the above items (1) to (6), the panel may be a liquid crystal panel in which liquid crystal is sandwiched between a pair of substrates.
That is, the present invention can be applied to a liquid crystal device using liquid crystal as an electro-optical material.
[0017]
(8) In the electro-optical device according to (7), at least a part of the holding member may be a light guide. That is, some liquid crystal devices have a structure using a light guide that has an effect of supplying uniform light to the entire surface of the liquid crystal layer. For such a liquid crystal device, it is desirable to use the light guide as described above as a support member for supporting the liquid crystal panel.
[0018]
(9) Next, a method for manufacturing an electro-optical device according to the present invention includes a panel in which an electro-optical material is supported by a substrate and an FPC is disposed on the substrate, a control substrate including a control circuit, In the method of manufacturing an electro-optical device having a panel and a support member that supports the control board, the support member is provided with a protrusion and a notch, and the control board is provided with a hole. The control board is disposed at a predetermined position of the support member with the protrusion inserted into the hole, and the FPC is conductively connected to the control board through the notch.
[0019]
According to the method of manufacturing the electro-optical device having the above configuration, the mounting position of the control board with respect to the support member is always determined to be a fixed position by fitting the hole of the control board into the protrusion of the support member. And the work at this time is a very simple work of simply fitting the hole into the protrusion, and it is not necessary to perform the inaccurate and troublesome work of positioning the control board and the support member by visual observation, so that the workability is very high. Very expensive.
In addition, since the mounting position of the control board with respect to the support member is always determined to be a fixed position, the subsequent processing of soldering the FPC terminal to the control board terminal with respect to the control board can be performed with high positional accuracy. it can.
[0020]
(10) In the method of manufacturing the electro-optical device according to (9),
(A) disposing the control board at the predetermined position with respect to the support member;
(B) After the step (a), mounting the panel on the support member;
(C) After the steps (a) and (b), it is desirable to execute a step of connecting the FPC and the control board.
[0023]
(13) Next, an electronic apparatus according to the present invention is an electronic apparatus including an electro-optical device and a control circuit that controls the operation of the electro-optical device. The electro-optical device includes the above-described (1) to (8). It is comprised by the electro-optical apparatus as described in at least any one of these.
As such an electronic device, for example, a mobile phone, a portable information terminal, and the like can be considered.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
Hereinafter, a liquid crystal device will be described as an example of the electro-optical device according to the invention. In FIG. 1, a liquid crystal device 1 includes a liquid crystal panel 2 as a panel, a flat light guide 3 as a support member, a frame 4 integral with the light guide 3, an LED substrate 6, and a control circuit. And a control board 7 having 33. The light guide 3 and the frame 4 can be integrally formed of resin, or both can be assembled after being formed separately.
[0025]
FIG. 2 shows a cross-sectional structure in which the above elements are combined. The image displayed on the display surface of the liquid crystal device 1 is recognized from above (in other words, the side opposite to the side on which the light guide 3 is disposed with respect to the liquid crystal panel 2). As shown in FIG. 2, the liquid crystal panel 2 is disposed to face the light emitting surface of the light guide 3, and the LED substrate 6 is disposed to face the side surface of the light guide 3, that is, the light capturing surface, and is controlled. The substrate 7 is disposed to face the non-light emitting surface of the light guide 3.
[0026]
A reflective sheet 25 can be provided on the non-light emitting surface of the light guide 3. Further, in FIG. 1, projections, that is, bosses 10 and 10 are formed integrally with the light guide 3 as a support member at two corners of the light guide 3, for example, by an integral molding process of resin. These protrusions 10 are used to always determine the relative position of the control board 7 with respect to the light guide 3 as a support member at a fixed position.
[0027]
The liquid crystal panel 2 has a pair of substrates 9 a and 9 b facing each other in FIG. 1, and these substrates are bonded to each other by a sealing material 11. A liquid crystal injection port 11 a is formed at an appropriate position of the sealing material 11.
[0028]
In FIG. 2, the first substrate 9a has a substrate material 12a, and the liquid crystal side surface of the substrate material 12a, that is, the surface facing the second substrate 9b, has a plurality of which act as either a common electrode or a segment electrode. The first electrode 13a is formed in a predetermined pattern, the overcoat layer 14a is formed thereon, and the alignment film 16a is further formed thereon. Further, a polarizing plate 17a as an optical element is attached to the outer surface of the substrate material 12a by, for example, sticking.
[0029]
The second substrate 9b facing the first substrate 9a has a substrate material 12b, and the liquid crystal side surface of the substrate material 12b, that is, the surface facing the first substrate 9a, acts as the other of the common electrode or segment electrode, for example. A plurality of second electrodes 13b are formed in a predetermined pattern, an overcoat layer 14b is formed thereon, and an alignment film 16b is further formed thereon. Further, a polarizing plate 17b as an optical element is attached to the outer surface of the substrate material 12b by, for example, sticking.
[0030]
On the outer surface of both or one of the first substrate 9a and the second substrate 9b, other elements other than the above-described polarizing plate, for example, a light diffusing plate, a phase difference plate, and the like can be provided as necessary. A transflective plate as an optical element may be provided between the liquid crystal panel 2 and the light guide 3. Further, on the inner surface of one of the substrate materials 12a or 12b, an element other than the above-described alignment film, for example, a color filter can be provided as necessary. In the case of a reflective layer-incorporated transflective panel, a reflective layer can be provided on the inner surface of the substrate material 12b on the liquid crystal layer side.
[0031]
The substrate materials 12a and 12b are formed in a predetermined shape, for example, a rectangular shape or a square shape, using, for example, a hard light-transmitting material such as glass, or a flexible light-transmitting material such as plastic. The first electrode 13a and the second electrode 13b are formed with a thickness of about 1000 mm by a transparent conductive material such as ITO (Indium Tin Oxide), for example, and the overcoat layers 14a and 14b are made of, for example, silicon oxide, oxide Titanium or a mixture thereof is formed to a thickness of about 800 mm, and the alignment films 16a and 16b are formed to a thickness of about 800 mm by a polyimide resin, for example.
[0032]
As shown in FIG. 1, the first electrode 13 a is formed in a so-called stripe shape by arranging a plurality of linear patterns in parallel with each other. On the other hand, the second electrode 13b is also formed in a stripe shape by arranging a plurality of linear patterns parallel to each other so as to intersect the first electrode 13a. A plurality of points where these electrodes 13a and 13b intersect in a dot matrix form a pixel for displaying an image. An area defined by the plurality of pixels is a display area for displaying an image such as a character.
[0033]
As shown in FIG. 2, a plurality of spacers 18 are dispersed on the liquid crystal side surface of one of the first substrate 9a and the second substrate 9b formed as described above. A sealing material 11 is provided on the liquid crystal side surface in a frame shape as shown in FIG. 1 by, for example, printing, and a liquid crystal injection port 11 a is formed in a part of the sealing material 11.
[0034]
As shown in FIG. 2, a uniform dimension held by the spacer 18, for example, a gap of about 5 μm, a so-called cell gap, is formed between the substrates 9a and 9b, and this is passed through the liquid crystal injection port 11a (see FIG. 1). Liquid crystal 19 is injected into the cell gap, and after the injection is completed, the liquid crystal injection port 11a is sealed with resin or the like.
[0035]
In FIG. 1, the first substrate 9a has a substrate overhanging portion 9c that protrudes to the outside of the second substrate 9b, and the first electrode 13a on the first substrate 9a directly extends to the substrate overhanging portion 9c to form the wiring 21a. It has become. Further, the second substrate 9b has a substrate overhanging portion 9d that protrudes outside the first substrate 9a, and the second electrode 13b on the second substrate 9b extends directly to the substrate overhanging portion 9 to become a wiring 21b. ing.
[0036]
In reality, a large number of electrodes 13a and 13b and wirings 21a and 21b extending from them are formed over the entire surface of each of the substrates 9a and 9b at an extremely narrow interval, but FIG. 1 shows the structure in an easy-to-understand manner. These electrodes and the like are schematically shown at intervals wider than the actual intervals, and some of the electrodes are not shown. In addition, the electrodes 13a and 13b formed in the region where the liquid crystal is sealed are not limited to being formed in a straight line, and may be formed as a pattern such as an appropriate character or figure.
[0037]
In FIG. 1, TCP (Tape Carrier Package) 22a and 22b acting as conductive connecting members are respectively attached to substrate projecting portions 9c and 9d, which are anisotropic conductive adhesive elements such as ACF (Anisotropic Conductive Film). ) 23.
[0038]
As is well known, the ACF 23 is a conductive polymer film that is used to electrically connect a pair of terminals with anisotropy and is electrically connected. For example, as shown in FIG. Alternatively, it is formed by including a large number of conductive particles 26 in a dispersed state in the thermosetting resin film 24.
[0039]
In FIG. 1, TCPs 22a and 22b are IC structures configured by using TAB technology. For example, liquid crystal driving ICs 29a and 29b are bonded to an FPC (Flexible Printed Circuit) 28 in which wirings 27 are formed, respectively. For example, it is formed by gang bonding. Reference numerals 30a and 30b denote terminals for electrical connection with the internal region terminals 34a and 34b on the control board.
[0040]
The substrate overhanging portion 9c and the TCP 22a are sandwiched between the ACF 23 by thermocompression bonding, that is, the pressure is applied under heating, so that the TCP 22a is bonded to the substrate overhanging portion 9c, and the TCP 27a wiring 27 and the wiring over the substrate overhanging portion 9c To achieve a unidirectional conductive connection between them. Further, the same adhesion and conductive connection are realized between the substrate overhanging portion 9d and the TCP 22b.
[0041]
With respect to the liquid crystal panel 2 configured as described above, a scanning voltage is applied to each of the first electrode 13a or the second electrode 13b for each row by the liquid crystal driving IC 29a or 29b, and the other of the electrodes is also applied. By applying a data voltage based on the display image to the liquid crystal layer, a voltage difference between the two voltages is applied to the liquid crystal layer at each pixel position. When the light passes through the liquid crystal layer, the light is modulated in each pixel portion to which the above-described differential voltage is applied, and as a result of the light passing through the polarizing plate on the light emitting side, the outside of the substrate 9a or 9b, this embodiment In this case, an image such as letters and numbers is displayed outside the substrate 9a.
[0042]
The LED substrate 6 provided on the light receiving surface side of the light guide 3 is formed by a skirt 6a on both sides having a low height and a beam 6b having a high height spanned between the skirts 6a. Then, a plurality of LEDs (Light Emitting Diodes) 31 that are light emitting elements are mounted at appropriate intervals along the longitudinal direction of the beam portion 6b. The bottom of the beam portion 6 b is notched with a predetermined interval, that is, a recess 37 is provided, and the plurality of LEDs 31 are provided in a positional relationship with the recess 37 interposed therebetween. Terminals 32 are formed on the skirt 6a of the LED board 6, and the terminals 32, LEDs 31 and other electronic components (not shown) provided as needed are connected to the inside or the surface of the LED board 6. Wiring (not shown) is formed.
[0043]
As shown in FIG. 1, the LED substrate 6 is attached to the frame 4 or the light guide 3 from the non-light emitting surface side of the light guide 3. This mounting can be performed by using a special fixing means such as a screw or an adhesive. Instead, for example, an LED (not shown) formed between the light guide 3 and the frame 4 is connected to the LED. This can also be achieved by inserting and fitting the skirt 6a of the substrate 6.
[0044]
In a state where the skirt portion 6a of the LED substrate 6 is mounted on the frame 4 or the light guide 3, the beam portion 6b of the LED substrate 6 is disposed at a position facing the side surface of the light guide 3, that is, the light capturing surface. Thus, the LED 31 mounted on the beam portion 6 b is disposed to face the light capturing surface of the light guide 3. This state can be clearly understood by looking at the cross-sectional structure of FIG.
[0045]
In FIG. 1, the control board 7 is made of an inflexible material such as glass epoxy resin, for example, and a control circuit 33, internal region terminals 34a and 34b, and side edge terminals 36 are provided on the back side thereof. . These elements are electrically connected to each other via a wiring pattern (not shown). The control circuit 33 controls the operation of the liquid crystal driving ICs 29a and 29b of the liquid crystal panel 2, controls the lighting operation of the LED 31, or an electronic device in which the liquid crystal device 1 is used, such as a mobile phone or a portable information terminal. Control the operation of the machine.
[0046]
The internal region terminal 34a is a terminal to which the terminal 30a of one TCP 22a extending from the liquid crystal panel 2 is connected. The internal region terminal 34b is a terminal to which the terminal 30b of the other TCP 22b extending from the liquid crystal panel 2 is connected. In addition, a plurality of convex portions 38 are formed on the side end portion of the control substrate 7 to which the LED substrate 6 is connected, and openings 39 are inevitably formed on both sides of the convex portions 38.
[0047]
Holes 40a and 40b are provided in two corners of the control board 7, respectively. One hole 40a is formed in a circular shape, and the other hole 40b is formed in a shape that is partially open to the outside. The control board 7 is attached from the non-light emitting surface side of the light guide 3 to the frame 4 or the light guide 3 on which the LED board 6 is attached. At this time, as shown in FIG. 3A, the holes 40a and 40b provided in the control board 7 are fitted into the protrusions 10 and 10 provided in the light guide 3, thereby controlling the light guide 3. The relative position of the substrate 7 is always fixed.
[0048]
One of the holes 40a and 40b on the control board 7 side, in the case of this embodiment, the hole 40b has a shape that opens to the outside. Therefore, the work when the holes 40a and 40b are fitted into the protrusion 10 is easily performed. be able to.
[0049]
The mounting of the control board 7 to the light guide 3 can be performed using a special fixing means such as a screw or an adhesive as in the case of the mounting of the LED board 6 to the light guide 3 or a frame. This can be achieved by providing a fixing protrusion (not shown) at an appropriate position 4 and stopping the control board 7 using the protrusion. Further, the control board 7 may simply be placed on the light guide 3 without necessarily using such fixing means. Even in this case, the position of the control board 7 with respect to the light guide 3 is always held at a fixed position by the fitting of the protrusions 10 and 10 and the holes 40a and 40b, and does not shift.
[0050]
When the control board 7 is attached to the light guide 3 as a support member as described above, the LED board 6 is in the state in which the convex part 38 of the control board 7 is fitted in the concave part 37 of the LED board 6. The LED board 6 and the control board 7 are assembled to each other so as to project in the thickness direction ZZ of FIG. At this time, each LED 31 is accommodated in an opening 39 inevitably formed on both sides of the convex portion 38 of the control board 7.
[0051]
When the LED board 6 and the control board 7 are assembled to each other, the terminals 32 of the LED board 6 and the side edge terminals 36 of the control board 7 are in contact with each other in a positional relationship that coincides with each other. The LED board 6 is electrically and mechanically connected to the control board 7 by conducting a conductive connection process, for example, a soldering process, on the contact portion between the terminal 32 and the terminal 36. A light source substrate is formed.
[0052]
As shown in FIG. 2, an electrically insulating shielding tape 46 is provided on the surface of the control board 7 where the LED board 6 attached to the frame 4 or the light guide 3 and the control board 7 are connected. It is desirable to leave. The function of the shielding tape 46 can prevent unwanted materials such as flux from entering through the opening 39, and can further prevent a short circuit from occurring between the terminals 32, 36 and the TCP 22a.
[0053]
In FIG. 1, the liquid crystal panel 2 is mounted on a light guide 3 as a support member in a state where the image display surface is on the outside. At this time, one of the TCPs 22b passes through a substantially rectangular space K formed between the frame 4 and the light guide 3 (that is, the notch K of the light guide) in the vertical direction in FIG. It is bent as follows. After the liquid crystal panel 2 is supported on the light emitting surface of the light guide 3 in this way, one TCP 22a is bent to the back side of the control board 7 through the notch 42 provided in the frame 4, and as shown in FIG. The tip terminal 30a is connected to the internal region terminal 34a formed on the back surface of the control board 7 by conductive connection processing, for example, soldering processing.
[0054]
On the other hand, in FIG. 1, the other TCP 22 b is similarly bent through the light guide 3 and the frame 4 to the back side of the control board 7, and the tip terminal 30 b is formed on the back side of the control board 7. The region terminal 34b is connected by, for example, a soldering process.
[0055]
At this time, the width of the space K (that is, the length in the longitudinal direction) is substantially equal to the width of the TCP 22b (that is, the length in the same direction as the long side direction of the substrate overhanging portion 9d). By passing K, the position of the TCP 22b is determined in the width direction W (that is, the same direction as the long side direction of the substrate overhanging portion 9d) with respect to the light guide 3. Similarly, the width of the cutout portion 42 (that is, the length in the same direction as the long side direction of the substrate overhanging portion 9c) is the width of the TCP 22a (that is, the length in the same direction as the long side direction of the substrate overhanging portion 9c). Since the TCP 22a passes through the cutout portion 42, the TCP 22a is positioned in the width direction W (that is, in the same direction as the long side direction of the substrate protruding portion 9c) with respect to the light guide 3. Will be decided.
[0056]
That is, when the mounting position of the control board 7 is determined by the bosses 10 and 10 and the holes 40a and 40b with respect to the light guide 3, the positions of the terminals 34a and 34b with respect to the light guide 3 are also determined. When the liquid crystal panel 2 is attached to the light guide 3, the TCPs 22a and 22b are also positioned in the width direction W, respectively. Therefore, when connecting the TCPs 22a and 22b and the terminals 34a and 34b by soldering or the like, the terminals 34a and 34b are substantially positioned in the width direction W with respect to the light guide 3, respectively. The alignment operation in the width direction W is extremely easy.
[0057]
Thus, the liquid crystal device 1 disassembled and shown in FIG. 1 is assembled and completed as shown in FIG. According to the liquid crystal device 1, as shown in FIG. 1, the holes 40a and 40b of the control board 7 are fitted into the projections 10 and 10 integrated with the light guide 3 as a support member, thereby controlling the light guide 3. The mounting position of the substrate 7 is always determined to be a fixed position. Then, the work at this time is an extremely simple work of simply fitting the holes 40a and 40b into the protrusions 10 and 10, and the inaccurate and troublesome work of positioning the control board 7 and the light guide 3 by visual observation. Since it is not necessary, workability is very high.
[0058]
Since the mounting position of the control board 7 with respect to the light guide 3 is always determined to be a fixed position, various processes performed on the control board 7, such as the terminals 30a and 30b of the TCPs 22a and 22b, are controlled by the control board. 7 can be performed with high positional accuracy.
[0059]
(Second Embodiment)
FIG. 3B shows a main cross-sectional structure of another embodiment of the electro-optical device according to the invention. This embodiment is also an embodiment when the present invention is applied to a liquid crystal device, and the overall configuration of the liquid crystal device is the same as that of the liquid crystal device 1 shown in FIG. The embodiment shown in FIG. 3B is different from the previous embodiment shown in FIG. 3A in that the protrusion 10 provided on the light guide 3 is modified.
[0060]
In the embodiment shown in FIG. 3A, the protrusion 10 is formed by a conical shape having an outer diameter smaller than the holes 40a and 40b provided in the control board 7, but in the present embodiment shown in FIG. A protrusion 20 having a shape in which a conical portion 44 is formed at the tip of the portion 43 is used. Further, in the previous embodiment shown in FIG. 3A, one hole 40b provided in the control board 7 is formed to be open to the outside. However, in this embodiment, both the holes 40a and 40b provided in the control board 7 are provided. It was formed in a circular shape.
[0061]
In the present embodiment, the holes 40a and 40b of the control board 7 are fitted into the protrusions 20 and 20 of the light guide 3 and further pressed with an appropriate pressure. Then, the holes 40 a and 40 b pass through the tip cone portion 44 of the protrusion 20 and enter the cone portion 43. As a result, the control board 7 is pressed toward the light guide 3 by the large diameter portion of the bottom surface of the tip cone portion 44 of the protrusion 20 and is firmly held so as not to be displaced.
[0062]
(Third embodiment)
FIG. 4 shows a mobile phone which is an embodiment of an electronic apparatus according to the present invention. The cellular phone 50 shown here is configured by storing various components such as an antenna 51, a speaker 52, a liquid crystal device 60, a key switch 53, a microphone 54, and the like in an exterior case 56 as a casing. In addition, a control circuit board 57 on which a control circuit for controlling the operations of the various configurations described above is provided inside the outer case 56.
[0063]
In the cellular phone 50, a signal input through the key switch 53 and the microphone 54, reception data received by the antenna 51, and the like are input to the control circuit of the control circuit board 57. Then, the control circuit displays an image such as a number, a character, and a graphic on the display surface of the liquid crystal device 60 based on various types of input data, and further transmits transmission data from the antenna 51. In the cellular phone 50, the liquid crystal device 60 can be configured using the liquid crystal device 1 shown in FIG.
[0064]
(Other embodiments)
The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to the embodiments, and various modifications can be made within the scope of the invention described in the claims.
[0065]
For example, in the embodiment of FIG. 1, the light guide 3 is used as the support member. However, some liquid crystal devices have a structure that does not use the light guide, and in such a liquid crystal device, other than the light guide 3. These members are used as support members. In the liquid crystal device 1 of FIG. 1, the frame 4 can also be used as a support member.
[0066]
In the embodiment shown in FIG. 1, the case where two liquid crystal panels 2, that is, a plurality of TCPs 22 a and 22 b, that is, a plurality of conductive connecting members extend, is illustrated. In some cases, the conductive connecting member extends from the liquid crystal panel. The present invention can also be applied to a liquid crystal device having only one such conductive connecting member.
[0067]
Further, the conductive connection member is not limited to a structure having an IC chip mounted, such as TCP 22a and 22b, and an FPC (Flexible Printed Circuit) having only a wiring pattern without mounting an IC chip may be a conductive connection member. is there.
[0068]
The electro-optical device to which the present invention can be applied is not limited to a liquid crystal device, and can be applied to other arbitrary electro-optical devices such as an optical device having an organic EL panel, a plasma display, and the like. Further, the driving method of the liquid crystal device is not limited to the passive matrix type, but can be applied to an active matrix type liquid crystal device.
[0069]
In addition, the electronic device according to the present invention is not limited to the mobile phone shown in FIG. 4, and may be any other electronic device such as a portable information terminal, a digital camera, or the like.
[0070]
【The invention's effect】
According to the electro-optical device, the manufacturing method thereof, and the electronic apparatus according to the invention, the mounting position of the control board with respect to the support member is always fixed by inserting the hole of the control board into the protrusion of the support member such as the light guide. It is decided. And the work at this time is a very simple work of simply fitting the hole into the protrusion, and it is not necessary to perform the inaccurate and troublesome work of positioning the control board and the support member by visual observation, so that the workability is very high. Very expensive.
[0071]
Since the mounting position of the control board with respect to the support member is always determined to be a fixed position, various processing performed on the control board, for example, terminals of conductive connection members such as FPC, TCP, etc. are connected to the terminals of the control board. It is possible to perform a process of soldering on the substrate with high positional accuracy.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating an exploded embodiment of a liquid crystal device which is an example of an electro-optical device according to the invention.
FIG. 2 is a cross-sectional view showing a cross-sectional structure of the liquid crystal device according to the line II-II in FIG.
3A is a cross-sectional view showing another cross-sectional structure of the liquid crystal device shown in FIG. 2, and FIG. 3B is a cross-sectional view showing a main cross-sectional structure of another embodiment of the liquid crystal device.
FIG. 4 is a perspective view showing an embodiment of a mobile phone which is an example of an electronic apparatus according to the invention.
[Explanation of symbols]
1 Liquid crystal device
2 Liquid crystal panel (panel)
3 Light guide (support member)
4 frames
6 LED board
7 Control board
9a, 9b substrate
10 protrusion
12a, 12b Substrate material
13a, 13b electrode
19 Liquid crystal
20 protrusions
22a, 22b TCP (conductive connection member)
33 Control circuit
40a, 40b hole
43 Cylindrical part
44 Cone

Claims (11)

In an electro-optical device having a panel in which an electro-optical material is supported by a substrate and an FPC is disposed on the substrate, a control board having a control circuit, and a support member that supports the panel and the control board.
The support member is provided with a protrusion and a notch,
The control board is provided with holes,
The electro-optical device, wherein the projection passes through the hole when the control board is disposed at a predetermined position of the support member, and the FPC is conductively connected to the control board through the notch. . The electro-optical device according to claim 1.
2. The electro-optical device according to claim 1, wherein at least two protrusions are provided on the support member, and at least two holes are provided on the control board corresponding to the protrusions. The electro-optical device according to claim 2.
The electro-optical device according to claim 1, wherein at least one of the holes has a shape that a part thereof is released to the outside. The electro-optical device according to any one of claims 1 to 3,
2. An electro-optical device according to claim 1, wherein a plurality of the FPCs are provided on the panel, and a plurality of the notches are provided on the support member. The electro-optical device according to any one of claims 1 to 4,
The electro-optical device, wherein the protrusion has a conical shape smaller than the hole. The electro-optical device according to any one of claims 1 to 4,
The protrusion has a shape in which a conical portion is formed at a tip of a cylindrical portion, the outer diameter of the cylindrical portion is smaller than the hole, and the diameter of the bottom surface of the conical portion is larger than the hole. An electro-optical device. The electro-optical device according to any one of claims 1 to 6,
2. The electro-optical device according to claim 1, wherein the panel is a liquid crystal panel that sandwiches liquid crystal between a pair of substrates. The electro-optical device according to claim 7.
An electro-optical device, wherein at least a part of the holding member is a light guide. Manufacture of an electro-optical device having a panel in which an electro-optical material is supported by a substrate and an FPC is disposed on the substrate, a control substrate having a control circuit, and a support member that supports the panel and the control substrate. In the method
The support member is provided with a protrusion and a notch,
The control board is provided with holes,
The control board is disposed at a predetermined position of the support member in a state where the protrusion is inserted into the hole,
A method of manufacturing an electro-optical device, wherein the FPC is conductively connected to the control board through the notch. A method of manufacturing the electro-optical device according to claim 9,
(A) disposing the control board at the predetermined position with respect to the support member;
(B) After the step (a), mounting the panel on the support member;
(C) After the steps (a) and (b), connecting the FPC and the control board;
A method for manufacturing an electro-optical device.   9. An electronic apparatus comprising an electro-optical device and a control circuit that controls the operation of the electro-optical device, wherein the electro-optical device includes the electro-optical device according to claim 1. An electronic device characterized by that.

Images