JP2006195316A - Electro-optical device and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin electro-optical device and an electronic equipment in which an electro-optical panel itself is made thinner. <P>SOLUTION: A liquid crystal display device 1 has a liquid crystal panel 2 which displays an image on a display surface C and a first frame 7 which is formed by a plate shaped metal and mounted outside the liquid crystal panel 2. In the liquid crystal display device 1, the first frame 7 is directly attached to the surface which is located at the opposite side of the display surface C of the liquid crystal panel 2. Since the liquid crystal panel 2 is integrally formed with the first frame 7, strength against external force is made greater and the liquid crystal panel 2 can be formed thinner. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electro-optical device such as a liquid crystal display device. The present invention also relates to an electronic apparatus using an electro-optical device.

  Currently, electro-optical devices such as liquid crystal display devices and EL devices are widely used in various electronic devices such as mobile phones and portable information terminals. For example, an electro-optical device is used as a display unit for visually displaying various types of information related to electronic devices. In this electro-optical device, a device using liquid crystal as an electro-optical material, that is, a liquid crystal display device is known. An EL device using EL (Electro Luminescence) as an electro-optical material is also known. In these electro-optical devices, an electro-optical material such as liquid crystal is sealed between a pair of substrates or disposed on a single substrate to form an electro-optical panel that is a panel structure.

  In the electro-optical panel as described above, a substrate constituting the same is often formed using glass. In general, a large number of wirings, electrodes, and the like are formed on the electro-optical panel. When an impact or external force is applied to such an electro-optical panel, there is a possibility that a failure such as breakage of the substrate or disconnection of the wiring may occur. Therefore, in order to maintain the strength of the electro-optical panel, a liquid crystal display device having a structure that covers a liquid crystal panel as an electro-optical panel using a pair of shield plates made of metal is conventionally known (for example, Patent Document 1). reference). There is also known a liquid crystal display device having a structure in which a cover glass having translucency is provided on a display surface in order to protect a substrate forming a display surface of the liquid crystal panel.

Japanese Patent Laying-Open No. 2001-60064 (page 4, FIG. 1)

  However, in the conventional liquid crystal display device disclosed in Patent Document 1, each of the pair of shield members covers the liquid crystal panel with an illumination device or other interposed member sandwiched between the liquid crystal panel. It was. That is, those shielding materials were not in close contact with the liquid crystal panel. For this reason, the shield material may have a function of protecting the liquid crystal panel, but did not have a function of reinforcing the liquid crystal panel. Therefore, when it is intended to maintain the strength of the liquid crystal panel itself, it is difficult to form the liquid crystal panel thin. In this case, it is difficult to form a thin liquid crystal display device using the liquid crystal panel. Further, when a cover glass is provided on the display surface of the liquid crystal panel, the liquid crystal display device becomes thicker by the thickness of the cover glass.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a thin electro-optical device and electronic apparatus by enabling the electro-optical panel itself to be thin. .

  An electro-optical device according to the present invention includes: an electro-optical panel that displays an image on a display surface; and a frame that is formed using a plate-like metal and is attached to the outside of the electro-optical panel. Is directly bonded to the surface of the electro-optical panel opposite to the display surface.

  In the above configuration, the “display surface” is a virtual surface on which an image is formed. If a polarizing plate is provided on the outermost surface of the electro-optical panel, the display surface is present on the surface of the polarizing plate. Further, when an optical element other than the polarizing plate is provided on the outermost surface of the electro-optical panel, a display surface exists on the surface of the optical element.

  The thickness of the plate-like metal is desirably uniform throughout. The thickness is a thickness that can give sufficient mechanical strength to the glass substrate, the plastic substrate, and the like when they are bent, sheared, or impacted.

  An “electro-optical panel” is a panel structure that changes an optical output state by controlling electrical conditions. The electro-optical panel is a panel structure including an electro-optical material such as liquid crystal, and realizes display by utilizing the electro-optical action of the electro-optical material. The electro-optical panel is formed, for example, by placing an electro-optical material on a substrate made of glass or the like, or encapsulating an electro-optical material between a pair of substrates. If, for example, liquid crystal is used as the electro-optical material, a liquid crystal panel as an electro-optical panel is configured.

  In general, when electro-optical panels are distinguished by daylighting methods, a transmissive panel that performs display by modulating the intensity of light incident from the back of the panel and the light incident from the front of the panel are reflected and the intensity of the light is modulated. Thus, there are a reflective panel that performs display, and a transflective panel that can display both transmissive and reflective. There is also a light-emitting panel in which an electro-optic material contained in the electro-optic panel emits light by itself. The electro-optical device according to the present invention may be applied to an electro-optical panel that does not have a structure for performing display using light transmitted through a liquid crystal panel, that is, a reflective panel or a self-luminous panel.

  According to the electro-optical device having the above configuration, the frame is directly bonded to the surface opposite to the display surface of the electro-optical panel. By doing so, the electro-optical panel is integrated with the frame, so that the strength against external force can be increased. For example, it is possible to prevent damage such as cracking of the electro-optical panel when a force that causes the electro-optical panel to bend is applied by pressing the electro-optical panel or an impact is applied to the electro-optical panel. As a result, the electro-optical panel can be formed thinner than when the frame is not bonded. Further, since the strength of the electro-optical panel is increased, the electro-optical panel in a portion other than the portion covered with the frame may not be covered with another frame. Thereby, an electro-optical device using this electro-optical panel can be formed thin.

  Next, in the electro-optical device according to the present invention, it is preferable that the frame is bonded to the electro-optical panel using a tape having adhesive layers on both front and back surfaces. In this way, the electro-optical panel and the frame can be more reliably bonded. Further, since the double-sided tape is an adhesive member having a thin and uniform thickness, a unit formed by bonding the electro-optical panel and the frame can be formed to have a thin and uniform thickness.

  Next, in the electro-optical device according to the aspect of the invention, the electro-optical panel includes a first substrate having translucency that forms a display surface, and a surface of the first substrate opposite to the display surface. Preferably, the frame is directly bonded to a surface of the second substrate opposite to the surface facing the first substrate. In general, a layer having a predetermined optical characteristic such as a polarizing layer is provided on the outer surface of a substrate forming an electro-optical panel. By passing through these layers, light is modulated and display is performed.

  However, the electro-optical panel to which the present invention is applied can be constituted by a reflective panel or a light-emitting panel. In that case, a polarizing layer or the like may not be provided on the surface of the second substrate. In this case, since the frame can be directly bonded to the surface of the second substrate without interposing an optical element such as a polarizing layer, the electro-optical panel can be formed as thin as the thickness of the polarizing layer.

  Next, the electro-optical device according to the present invention includes a plurality of first fitting portions provided at the side ends of the frame and a second fitting portion that fits into the first fitting portion. It is desirable to have a second frame that covers the electro-optical panel from the display surface side. By so doing, the portion of the electro-optical panel that is not protected by the frame can be protected by the second frame, so that the impact resistance of the electro-optical panel can be increased.

  Next, an electro-optical device according to the present invention includes (1) a light source that generates illumination light, (2) an illumination light incident surface on which the illumination light is incident, and the illumination light that is emitted toward the electro-optical panel. A light guide provided on the display surface side of the electro-optic panel, and (3) a plurality of prisms provided on the illumination light output surface of the light guide. It is desirable to have In this way, the plurality of prisms formed on the light guide body are not exposed to the outside, so that the prisms can be prevented from being damaged. Further, since the light guide covers the display surface of the electro-optical panel, the display surface can be prevented from being damaged.

  Next, the electro-optical device according to the present invention further includes a panel-shaped input unit that is provided on the display surface side of the electro-optical panel and has translucency, and the input unit has translucency. It is desirable that the input device substrate includes a position detection unit provided on the input device substrate, and the input device substrate is configured by the light guide.

  The position detection means can be constructed using various electrical and optical elements. For example, if an input device called a resistance film type touch panel is used, the position detection means includes another substrate provided opposite to the input device substrate and with a gap therebetween, and those substrates. And a surface electrode provided on the opposite surface of the substrate. According to this position detection means, the other substrate is pushed with an operator's finger or the like, and both surface electrodes are brought into contact with each other at the pressing point. By measuring the resistance value, the coordinate value (X, Y) of the pressing point can be detected.

  Such an input means is conventionally configured as a single unit, and this single unit is the back side of the illumination light exit surface of the light guide provided on the display surface side of the electro-optical panel, that is, its guide. It was provided by pasting on the observation side of the light body. In this case, since the electro-optical panel having the substrate and the input unit overlap each other, the entire thickness of the electro-optical device is increased.

  In this regard, according to the electro-optical device configured as described above, since the prism of the light guide is formed on the illumination light exit surface, the surface of the light guide on which the input unit is provided can be formed on a smooth plane. . Thereby, an input means can be formed in the surface on the opposite side to the illumination light emission surface of a light guide using a light guide as a board | substrate for input devices. That is, there is no need to provide a dedicated input means substrate. As a result, the overall thickness of the electro-optical device can be reduced.

  Next, in the electro-optical device according to the aspect of the invention, it is preferable that the thickness of the first substrate is different from the thickness of the second substrate. In this case, the strength of the electro-optical panel can be increased as compared with the case where the thickness of the first substrate and the thickness of the second substrate are the same. As a mode of making the thicknesses of the substrates different, the first substrate on the observation side is made thinner than the second substrate on the non-observation side, and the second substrate on the non-observation side is made more than the first substrate on the observation side. Sometimes thin. These facts have been confirmed by experiments of the present inventors.

  Next, an electronic apparatus according to the invention includes the electro-optical device having the above-described configuration. In the electro-optical device according to the present invention, the strength of the electro-optical panel against external force can be increased by directly bonding the frame to the surface opposite to the display surface of the electro-optical panel. Even if formed, the required strength can be secured. If the electro-optical panel is thinned, an electro-optical device configured using the electro-optical panel can be thinly formed. As a result, an electronic apparatus according to the present invention using this electro-optical device can also be formed thin.

  Next, an electronic apparatus according to the present invention includes an electro-optical panel that displays an image on a display surface, (1) a light source that generates illumination light, (2) an illumination light incident surface that receives the illumination light, and A light guide provided on the display surface side of the electro-optic panel, and (3) the illumination light of the light guide. And a plurality of prisms provided on the exit surface. In the electronic apparatus having this configuration, since the plurality of prisms formed on the light guide are not exposed to the outside, damage to the prisms can be prevented even when no cover glass is provided on the display surface side of the electro-optical panel. Thus, if a cover glass is not provided, an electronic device can be formed thinly.

  Next, an electronic apparatus according to the present invention includes an electro-optical panel that displays an image on a display surface, and a frame that is formed using a plate-like metal and is attached to the outside of the electro-optical panel. The frame is directly bonded to a surface of the electro-optical panel opposite to the display surface. In the electronic apparatus having this configuration, the strength of the electro-optical panel against external force can be increased by directly bonding the frame to the surface of the electro-optical panel opposite to the display surface. Even if formed, the required strength can be secured. If the electro-optical panel is made thinner, an electronic device using it can be made thinner.

(First embodiment of electro-optical device)
Hereinafter, an electro-optical device according to the present invention will be described with reference to an embodiment thereof. Of course, the present invention is not limited to this embodiment. Further, in the drawings used in the following description, it should be noted that components may be illustrated with a dimensional ratio different from the actual dimensional ratio in order to easily show the characteristic part.

  FIG. 1 shows a liquid crystal display device as an example of an electro-optical device according to the present invention in an exploded state. The liquid crystal display device mentioned here is an active matrix type using a low-temperature polysilicon TFT (Thin Film Transistor) element which is a three-terminal type switching element, and is a reflective liquid crystal display device. The reflection type is a method used for display by reflecting external light such as sunlight and room light incident from the observation side inside the liquid crystal panel. In addition to external light such as sunlight and room light, light from an illumination device arranged on the observation side can be reflected and used for display. In this liquid crystal display device, the side on which the arrow A is drawn is the observation side. FIG. 2 shows a cross-sectional structure of the liquid crystal display device according to the line BB in FIG. FIG. 3 shows an enlarged cross-sectional structure in the vicinity of one element.

  In FIG. 1, a liquid crystal display device 1 of this embodiment includes a liquid crystal panel 2 as an electro-optical panel, a driving IC 3 mounted on the liquid crystal panel 2, a lighting device 4, a first frame 7, and a second frame. Frame 8. The illumination device 4 is arranged on the observation side where the arrow A is drawn and functions as a front light.

  In FIG. 2, the illuminating device 4 includes a light source 5 and a light guide 6 formed of a translucent resin. The light source 5 is configured by, for example, an LED (Light Emitting Diode) as a point light source. The illumination light incident surface 6a of the light guide 6 extends in the direction perpendicular to the paper surface of FIG. 2, and the light generated from the LED 5 is introduced into the light guide 6 through the illumination light incident surface 6a, and the illumination light exit surface. The light is emitted from 6b to the outside. The back side surface of the illumination light exit surface 6b is a display light exit surface 6c that emits light for display. The light source can also be constituted by a point light source other than the LED 5 or a linear light source such as a cold cathode tube.

  In FIG. 1, the liquid crystal panel 2 is formed by bonding an element substrate 11 and a color filter substrate 12 with a sealing material 13. The sealing material 13 is formed in a square or rectangular shape, that is, a rectangular ring shape when viewed from the direction of the arrow A. As shown in FIG. 2, in a cell gap G formed between the element substrate 11 and the color filter substrate 12, a liquid crystal as an electro-optical material, for example, a TN liquid crystal is sealed to form a liquid crystal layer 14. . As a liquid crystal mode, a liquid crystal having negative dielectric anisotropy, that is, a liquid crystal in a vertical alignment mode may be used.

  The element substrate 11 includes a first light-transmitting substrate 11a that is rectangular or square when viewed from the observation side on which an arrow A is drawn. The first translucent substrate 11a is formed of translucent glass, translucent plastic, or the like, for example. In addition, since the liquid crystal display device 1 in this embodiment is a reflection type liquid crystal display device, the 1st translucent board | substrate 11a can also be formed with the other material which does not have translucency.

  A plurality of pixel TFT elements 21 as switching elements, which are active elements, are provided on the inner surface of the first translucent substrate 11a, and further, pixel electrodes 22a are attached to the individual TFT elements 21. The plurality of pixel electrodes 22a are formed by photoetching using, for example, ITO (Indium Tin Oxide) as a material, and are arranged in a dot matrix as viewed from the observation side indicated by an arrow A.

  A plurality of photo spacers 30 are formed at appropriate intervals between the pixel electrodes 22a, that is, in the light shielding region or the black matrix region. These photo spacers 30 are formed, for example, by patterning a photosensitive resin by photolithography. The photo spacer 30 is formed in a standing cylindrical shape, and functions so that the cell gap G maintains a uniform dimension. An alignment film 23 a is formed on the TFT element 21, the pixel electrode 22 a and the photo spacer 30. The alignment film 23a is subjected to an alignment process, for example, a rubbing process, whereby the initial alignment of liquid crystal molecules in the vicinity of the alignment film 23a is determined. The alignment film 23a is formed, for example, by applying and baking a polyimide solution, or by offset printing.

  The TFT element 21 used in this embodiment is a low-temperature polysilicon TFT. The TFT element 21 includes a gate electrode 31, a gate insulating film 32, a semiconductor layer 33, a source electrode 34, and a drain electrode 35 as shown in FIG. Have The semiconductor layer 33 includes a channel region 33a formed of polysilicon (Poly-Si), a source region 33b formed by doping polysilicon with impurities, and a drain region 33c formed by doping polysilicon with impurities. It is formed. The gate insulating film 32 is formed so as to cover the semiconductor layer 33.

  The gate electrode 31 extends from the gate electrode line 31 ′ extending in the left-right direction in FIG. 3, and the tip thereof faces the channel region 33 a with the gate insulating film 32 interposed therebetween. A first interlayer insulating film 38a is formed on the gate electrode 31 and the gate insulating film 32 so as to cover them.

  The source electrode 34 is formed on the first interlayer insulating film 38a. The source electrode 34 is formed as a part of the source electrode line 34 ′ extending in the direction perpendicular to the gate electrode line 31 ′, that is, the direction perpendicular to the paper surface of FIG. 3. The source electrode 34 is electrically connected to the source region 33 b of the semiconductor layer 33 through a first contact hole 37 a formed across the first interlayer insulating film 38 a and the gate insulating film 32.

  The drain electrode 35 is formed on the first interlayer insulating film 38a. The drain electrode 35 is electrically connected to the drain region 33 c of the semiconductor layer 33 through a second contact hole 37 b formed across the first interlayer insulating film 38 a and the gate insulating film 32. A second interlayer insulating film 38b is formed on the source electrode 34 and the drain electrode 35 so as to cover them. The drain electrode 35 is connected to the pixel electrode 22a through the third contact hole 37c formed in the second interlayer insulating film 38b.

  Between the pixel electrode 22a and the second interlayer insulating film 38b, the light reflecting layer 36 is formed of, for example, Al (aluminum), Al alloy, or the like. In the present embodiment, the light reflecting layer 36 is provided in a dot matrix form at a position corresponding to each of the plurality of pixel electrodes 22a. The planar shape of each light reflecting layer 35 is substantially the same as the planar shape of each pixel electrode 22a. An alignment film 23a is provided on the pixel electrode 22a. This alignment film 23a is subjected to an alignment process, for example, a rubbing process, whereby the initial alignment of liquid crystal molecules in the vicinity of the alignment film 23a is determined. This constitutes a reflective liquid crystal panel.

  In FIG. 2, the color filter substrate 12 facing the element substrate 11 has a second light-transmitting substrate 12a that is rectangular or square when viewed from the observation side. The second translucent substrate 12a is formed of translucent glass, translucent plastic, or the like, for example. A polarizing plate 26 is attached to the outer surface of the second light transmissive substrate 12a by, for example, sticking. In addition to the polarizing plate 26, another optical element such as a retardation plate may be provided.

  In FIG. 3, light shielding members 27 are provided on the inner surface of the second translucent substrate 12a in a lattice shape when viewed from the direction of the arrow A. The coloring elements 28 are provided in a plurality of spaces surrounded by the light shielding member 27. The plurality of coloring elements 28 are colored in one of B (blue), G (green), R (red), C (cyan), M (magenta), and Y (yellow). They are arranged in a predetermined arrangement as viewed from the direction, for example, a stripe arrangement, a mosaic arrangement, or a delta arrangement.

  An overcoat layer 29 is provided on the light shielding member 27 and the coloring element 28, a common electrode 22b is provided thereon, and an alignment film 23b is further provided thereon. The common electrode 22b is formed by, for example, photoetching using ITO as a material. The common electrode 22b is a planar electrode formed with a uniform thickness on the second translucent substrate 12a. The alignment film 23b is subjected to an alignment process, such as a rubbing process, whereby the initial alignment of liquid crystal molecules in the vicinity of the alignment film 23b is determined.

  The overcoat layer 29 is formed by, for example, applying and baking an epoxy-based or acrylic resin material, or by performing a photolithography process on the epoxy-based or acrylic resin material as necessary. Is done. The alignment film 23b is formed by, for example, applying and baking a polyimide solution, or by offset printing.

  Next, in FIG. 2, the plurality of pixel electrodes 22a formed on the element substrate 11 are arranged in a dot matrix as viewed from the direction of the arrow A. These pixel electrodes 22a overlap with the common electrode 22b when viewed from the direction of the arrow A. Thus, the region where the pixel electrode 22a and the common electrode 22b overlap constitutes a display dot region D which is the minimum region for display. The individual coloring elements 28 on the color filter substrate 12 are provided corresponding to the display dot region D. In the case of monochrome display that does not use the coloring element 28, one pixel is formed by one display dot region D. However, in the case of a structure that performs color display using the three colored elements 28 as in the present embodiment. In this case, one pixel is formed by a collection of three colored elements 28 of B, G, R or C, M, Y.

  The element substrate 11 projects to the outside of the color filter substrate 12 to form a projecting portion 19. The driving IC 3 is mounted on the surface of the overhang portion 19. This mounting can be performed using, for example, a COG (Chip On Glass) technique using an ACF (Anisotropic Conductive Film) 17. A plurality of wirings 24 are formed on the surface of the overhang portion 19 in a state aligned in the direction perpendicular to the paper surface of FIG. Further, a plurality of external connection terminals 25 are formed on the surface of the overhanging portion 19 in a state of being arranged in the direction perpendicular to the paper surface of FIG. Some of the plurality of wirings 24 are directly connected to the source electrode line 34 ′ and the gate electrode line 31 ′ (see FIG. 3) on the element substrate 11. Further, the remaining part of the plurality of wirings 19 is connected to the common electrode 22b on the color filter substrate 12 side through the conductive material 15 dispersed inside the sealing material 13 of FIG.

  An FPC (Flexible Printed Circuit) substrate 16, which is a flexible wiring substrate, is connected to the side edge of the overhang portion 19 using, for example, an ACF 17. A plurality of electronic components (not shown) necessary for driving the liquid crystal panel 2 are mounted on the FPC board 16. As this electronic component, for example, a resistor, a coil, a capacitor, a power supply IC, and the like can be considered. Further, on the FPC board 16, an external input device (for example, a control circuit of an electronic device such as a mobile phone), an external power source, and the like are connected. Then, a signal and power for driving the liquid crystal panel 2 are supplied from an input device and an external power source through the FPC board 16.

  In this embodiment, the FPC board | substrate 16 is provided so that it may extend straight from the edge of the 1st translucent board | substrate 11a. However, the FPC board 16 is a board excellent in bendability formed using, for example, a film made of polyimide, polyester, or the like as a base material. Therefore, it is also possible to bend the end portion of the first translucent substrate 11a so as to be wound and dispose it on the surface of the liquid crystal panel 2 opposite to the display surface.

  FIG. 4 shows an electrical equivalent circuit of the liquid crystal display device 1 of FIG. In FIG. 4, a plurality of scanning lines 43 are formed to extend in the row direction X. A plurality of data lines 44 are formed so as to extend in the column direction Y. The scanning line 43 is realized by the gate electrode line 31 'in FIG. 3, and the data line 44 is realized by the source electrode line 34' in FIG. The display dot region D is formed at each intersection of the scanning line 43 and the data line 44. In each display dot region D, the TFT element 21 and the pixel electrode 22a are connected in series. Each scanning line 43 is driven by the scanning line driving circuit 3a. On the other hand, each data line 44 is driven by the data line driving circuit 3b. The scanning line driving circuit 3a and the data line driving circuit 3b are constituted by the liquid crystal driving IC 3 of FIG. The liquid crystal drive IC 3 may cover both the drive circuits 3a and 3b with a common IC, or the drive circuits 3a and 3b may be assigned to individual ICs.

  The scanning signal is sent to the gate of the TFT element 21, and the data signal is sent to the source of the TFT element 21. When the TFT element 21 is turned on, the corresponding pixel electrode 22a is energized and writing to the liquid crystal in the corresponding display dot region D is performed. If the TFT element 21 is subsequently turned off, the written state is maintained. The liquid crystal molecules are controlled by this series of writing operation and holding operation.

  Returning to FIG. 1, the first frame 7 is provided on the observation side with respect to the liquid crystal panel 2, that is, on the side opposite to the side on which the arrow A is drawn. On the side surface of the first frame 7, a fitting piece 7 a that protrudes outward as a first fitting portion is provided. The second frame 8 is provided on the observation side, that is, the side on which the arrow A is drawn. The second frame 8 is provided with an opening 8a for exposing the display light emitting surface 6c of the light guide 6 to the outside. Further, a plurality of fitting holes 8 b as second fitting portions are provided on the side surfaces on both sides of the second frame 8. The second frame 8 is provided with an open portion 8 c for extending the FPC board 16 to the outside of the second frame 8.

  The first frame 7 and the second frame 8 are formed of a metal material such as stainless steel, copper, phosphor bronze, beryllium copper, or the like. These materials are materials having higher strength than the first translucent substrate 11a (see FIG. 2) and the second translucent substrate 12a (see FIG. 2) with respect to bending and shearing. The first frame 7 and the second frame 8 are formed by bending one metal material having a uniform thickness. The thickness T3 of the first frame 7 is preferably 0.1 mm or more. This is because if T3 is thinner than 0.1 mm, a practically sufficient strength cannot be ensured.

  As shown in FIG. 2, the illumination device 4 is disposed on the display surface C side of the liquid crystal panel 2. The first frame 7 and the second frame 8 are assembled so as to cover the liquid crystal panel 2 and the lighting device 4. At this time, the fitting hole 8 b of the second frame 8 is fitted into the fitting piece 7 a of the first frame 7, and the second frame 8 is attached to the first frame 7. Thereby, the liquid crystal display device 1 is formed.

  According to the liquid crystal display device 1 configured as described above, when the LED 5 of the illumination device 4 is turned on in FIG. 2, the light from the LED 5 is transmitted from the illumination light incident surface 6 a of the light guide 6 to the light guide 6. Further, the light is emitted as planar light from the illumination light emission surface 6b. As shown by the symbol Lo in FIG. 2, the emitted light passes through the color filter substrate 12 and the liquid crystal layer 14 and enters the element substrate 11, and then the reflective layer 36 (shown in FIG. 2) provided under the pixel electrode 22a. 3) and is supplied to the liquid crystal layer 14 again.

  Thus, while light is supplied to the liquid crystal layer 14, a predetermined voltage specified by the scanning signal and the data signal is displayed between the pixel electrode 22a on the element substrate 11 side and the common electrode 22b on the color filter substrate 12 side. This is applied to each dot region D, whereby the orientation of the liquid crystal molecules in the liquid crystal layer 14 is controlled for each display dot region D. As a result, the light supplied to the liquid crystal layer 14 is modulated for each display dot region D. When this modulated light passes through the polarizing plate 26, it is allowed to pass or blocked from passing for each display dot region D according to the polarization characteristics of the polarizing plate 26. Images such as numbers and figures are displayed and are visually recognized from the direction of arrow A. At this time, the light shielding member 27 functions as a black mask for preventing light from leaking from between the display dot regions D.

  Hereinafter, the illumination device and the liquid crystal panel used in the present embodiment will be described in detail. FIG. 5 is an enlarged view of a portion indicated by an arrow E in FIG. 2, that is, a part of the illumination light exit surface 6 b of the light guide 6. In FIG. 2, a plurality of prisms 46 are formed on the illumination light exit surface 6 b of the light guide 6. On the other hand, the display light exit surface 6c of the light guide 6 is formed to be a flat surface. These prisms 46 are formed in a wider area than the display area V of the liquid crystal panel 2 when the illumination device 4 is installed on the liquid crystal panel 2.

  The prisms 46 are for directing the light from the LEDs 5 to the liquid crystal panel 2, and each extend in a direction parallel to the illumination light incident surface 6a, that is, a direction perpendicular to the paper surface of FIG. Further, as shown in FIG. 5, each of the prisms 46 is formed in a triangular cross section. The inclination angle θ1 of the inclined surface 46a and the inclination angle θ2 of the inclined surface 46b forming this triangular shape are adjusted so that the light L1 propagating inside the light guide 6 is directed toward the liquid crystal panel 2.

  The light guide 6 is bonded onto the display surface C of the liquid crystal panel 2 by a frame-shaped double-sided adhesive tape 42 shown in FIG. This double-sided adhesive tape 42 is formed in a frame shape surrounding a plurality of prisms 46 formed on the illumination light exit surface 6b of the light guide 6, and the prism 46 on the illumination light exit surface 6b is not formed. Glued to the part.

  Next, in FIG. 2, the first frame 7 is directly bonded to the surface of the liquid crystal panel 2 opposite to the observation side using a double-sided adhesive tape 41. As can be seen from FIG. 1, the double-sided adhesive tape 41 is provided on the entire surface of the element substrate 11. That is, the bonding surface between the element substrate 11 and the first frame 7 is the entire surface of the element substrate 11. Thus, the first frame 7 and the element substrate 11 are integrally formed by bonding each other over the entire surface of the element substrate 11. The “adhesion” mentioned here can load the mechanical strength of the first frame 7 on the element substrate 11 and the liquid crystal panel 2 as well as being firmly worn to the extent that a normal adult cannot peel off by hand. This includes cases where it is worn loosely.

Moreover, the 1st translucent board | substrate 11a and the 2nd translucent board | substrate 12a are formed in the mutually different thickness. Specifically, when the thickness of the first translucent substrate 11a is T1, and the thickness of the second translucent substrate 12a is T2,
T1 <T2
To be formed. More specifically, the thickness T1 of the first translucent substrate 11a is formed to be one third of the thickness T2 of the second translucent substrate 12a.

  As described above, when the first light-transmitting substrate 11a and the second light-transmitting substrate 12a are formed to have different thicknesses, for example, a large-sized element-side mother substrate from which a plurality of element substrates 11 can be cut out. In the state where a large-sized panel structure is formed by pasting together a large-sized color filter-side mother substrate that can similarly cut out a plurality of color filter substrates 12, the front and back surfaces or one surface of the panel structure is polished. Can change the thickness of both substrates. Alternatively, the thicknesses of both the substrates can be changed by etching the front and back surfaces or one surface of the panel structure and removing the surfaces of the element-side mother substrate and the color filter-side mother substrate. Alternatively, the thickness can be changed by performing polishing to a predetermined thickness and then performing an etching process.

  As described above, in the liquid crystal display device 1 according to the present embodiment, the first frame 7 made of a plate-like metal material is directly bonded to the surface of the liquid crystal panel 2 opposite to the display surface C in FIG. . By doing so, the liquid crystal panel 2 is integrated with the first frame 7, so that the strength against external force can be increased. For example, when the liquid crystal panel 2 is pressed from the display surface C side, a force that causes the liquid crystal panel 2 to bend is applied, or when the liquid crystal panel 2 is subjected to an impact, the liquid crystal panel 2 is broken. Can be prevented. As a result, the liquid crystal panel 2 can be formed thinner than when the first frame 7 is not bonded.

  Further, when the strength of the liquid crystal panel 2 is low, measures such as housing the liquid crystal panel 2 in a frame-shaped member formed of resin or the like and protecting the liquid crystal panel 2 are necessary, but the first frame 7 is bonded. Thus, according to the present embodiment in which the strength of the liquid crystal panel 2 is increased, such a frame-like member is unnecessary. And the liquid crystal display device 1 can be formed thinly as much as the frame-shaped member is not provided.

  In the present embodiment, the first frame 7 is bonded to the liquid crystal panel 2 using the double-sided adhesive tape 41. If it carries out like this, the liquid crystal panel 2 and the 1st flame | frame 7 can be adhere | attached more reliably. Moreover, since the double-sided adhesive tape 41 is an adhesive member having a thin and uniform thickness, the liquid crystal panel 2 to which the first frame 7 is bonded can be formed to have a thin and uniform thickness.

  Since the liquid crystal panel 2 shown in FIG. 2 is a reflective panel, a polarizing layer or the like may not be provided on the surface of the element substrate 11. Accordingly, the first frame 7 can be directly bonded to the surface of the element substrate 11. By doing so, the liquid crystal panel 2 can be formed thinner by the thickness of the polarizing layer or the like.

  Moreover, in this embodiment, as shown in FIG. 1, the 2nd frame 8 which covers the liquid crystal panel 2 from the display surface C side is provided. The first frame 7 is provided with a plurality of fitting pieces 7a, the second frame 8 is provided with a plurality of fitting holes 8b, and the fitting holes 7b are fitted into the fitting pieces 7a as shown in FIG. By doing so, the second frame 8 is attached to the first frame 7. By so doing, the portion of the liquid crystal panel 2 that is not protected by the first frame 7 can be protected by the second frame 8, so that the impact resistance of the liquid crystal panel 2 can be increased.

  In the present embodiment, the illumination device 4 is provided on the display surface C side of the liquid crystal panel 2. The plurality of prisms 46 provided on the illumination light exit surface 6b of the light guide 6 were provided on the surface facing the liquid crystal panel 2, that is, the surface opposite to the observation side. In this way, the plurality of prisms 46 formed on the light guide 6 are not exposed to the outside, and thus the prisms 46 can be prevented from being damaged. Moreover, since the light guide 6 covers the display surface C of the liquid crystal panel 2, the display surface C can be prevented from being damaged.

  In the present embodiment, the thickness T1 of the first light transmitting substrate 11a constituting the element substrate 11 and the thickness T2 of the second light transmitting substrate 12a constituting the color filter substrate 12 are different. By doing so, the strength of the liquid crystal panel 2 can be increased as compared to the case where both the substrates 11a and 12a have the same thickness. This has been confirmed by the inventor through experiments.

(Second embodiment of electro-optical device)
FIG. 6 shows a liquid crystal display device 51 which is another embodiment of the electro-optical device according to the invention. FIG. 7 shows a cross-sectional structure of the liquid crystal display device 51 according to the line BB in FIG. The liquid crystal display device 51 shown here is different from the previous embodiment shown in FIG. 1 in that a touch panel input as a light-transmitting input means is provided on the display light exit surface 6c of the light guide 6 in FIG. The touch panel 61 is provided by forming the part 52. In the embodiment shown in FIG. 6, the same elements as those in the embodiment shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

  As shown in FIG. 7, the touch panel 61 includes a front side substrate 55 located on the observation side indicated by an arrow A and a rear side substrate 56 located on the back side of the front side substrate 55 when viewed from the observation side. It is formed by bonding with a frame-shaped sealing material 53. The front substrate 55 is formed in a film shape having a thickness of about 0.1 to 0.2 mm using, for example, a light-transmitting plastic. The back substrate 56 is formed of, for example, translucent glass or translucent plastic. In the present embodiment, the light guide 6 of the lighting device 4 is used as the back side substrate 56.

  As shown in FIG. 6, a flat surface electrode 57a is provided on the surface of the front substrate 55 facing the back substrate 56, and a pair of both ends of the surface electrode 57a extends in the Y direction. The low resistance electrode 58a is provided. On the other hand, a flat surface electrode 57b is provided on the surface of the back substrate 56 facing the front substrate 55, and a pair of low resistance electrodes 58b are provided at both ends of the surface electrode 57b so as to extend in the X direction. Provided. The surface electrodes 57a and 57b and the low resistance electrodes 58a and 58b are formed using a light-transmitting conductive film such as ITO. As shown in FIG. 2, the surface electrodes 57 a and 57 b are provided so as to cover the display region V of the liquid crystal panel 2 in a state where the touch panel 61 is disposed on the observation side of the liquid crystal panel 2. In the front substrate 55, the region where the surface electrode 57a is provided is a region pressed by an input person's finger or an input device (not shown).

  In FIG. 7, a plurality of dot-like projections 59 are provided on the surface of the surface electrode 57b that faces the surface electrode 57a. The protrusion 59 functions as a spacer for maintaining a gap between the surface electrode 57a and the surface electrode 57b. Further, an external connection terminal 54 is formed at the end of the back substrate 56 on the side 56a side. A substrate 60 such as an FPC substrate is connected to the external connection terminal 54. For example, a touch panel control circuit (not shown) is connected through the substrate 60. The touch panel control circuit has a voltage generation circuit and a voltage measurement circuit.

  Hereinafter, the operation of the touch panel 61 will be described. In FIG. 6, a touch panel control circuit (not shown) connected to the external connection terminal 54 via the substrate 60, at a certain point, between the low resistance electrodes 58b and 58b located at both ends of the back substrate 56. A predetermined voltage is applied to. A voltage measurement circuit in the touch panel control circuit is conductively connected between the low resistance electrodes 58a and 58a located at both ends of the front substrate 55.

  At this time, a uniform voltage drop in which the voltage changes linearly along the Y direction occurs on the surface electrode 57b of the back side substrate 56, and the parts having the same coordinate position in the Y direction have substantially the same potential. Such a voltage distribution is constructed. At this time, when a certain part in the front substrate 55 is pressed in a region corresponding to the display region V of the liquid crystal panel 2, the surface electrode 57a of the front substrate 55 and the surface electrode 57b of the rear substrate 56 come into contact with each other. . Thereby, the voltage of the surface electrode 57b at the position corresponding to the pressed part can be measured by the touch panel control circuit through the surface electrode 57a on the front substrate 55. Since the measured voltage value correlates with the coordinate position in the Y direction of the portion where the front substrate 55 is pressed, the input control circuit can detect the position in the Y direction of the pressed portion.

  On the other hand, at some other point in time, a predetermined voltage is applied between the low resistance electrodes 58a and 58a located at both ends in the X direction on the front substrate 55 by the touch panel control circuit, and the back substrate 56 A voltage measurement circuit is connected between the low resistance electrodes 58b, 58b located at both ends in the Y direction.

  At this time, a uniform voltage drop occurs along the X direction on the surface electrode 57a of the front substrate 55, and a voltage distribution in which the voltage changes linearly is formed. The input control circuit can detect the voltage of the surface electrode 57a of the front substrate 55 at the position corresponding to the portion where the front substrate 55 is pressed through the surface electrode 57b of the rear substrate 56. Thereby, the position of the pressed part in the X direction can be detected as in the case of detecting the position in the Y direction.

  The input control circuit can detect the position coordinate in the Y direction and the position coordinate in the X direction of the pressed portion by repeatedly switching the two connection states to the input control circuit in a short time.

  By the way, the touch panel as described above conventionally has a liquid crystal display by forming the touch panel input section 52 on a light transmitting substrate and attaching the light transmitting substrate to the display light emitting surface 6c of the light guide plate 6. It was provided in the device. However, in the liquid crystal display device formed in this way, in addition to the thickness of the liquid crystal panel and the thickness of the lighting device, the thickness of the touch panel is further added, so that the entire liquid crystal display device is formed thick.

  According to the liquid crystal display device 51 of the present embodiment, as shown in FIG. 7, the prism 46 of the light guide 6 is formed on the illumination light emission surface 6 b, and therefore the display light emission surface 6 c of the light guide 6. Can be formed in a uniform plane. Accordingly, the touch panel input unit 52 can be formed directly on the display light emitting surface 6c by using the light guide 6 as the back-side substrate 56 that is a translucent substrate. That is, since the illumination device 4 and the touch panel 61 can be integrally formed, it is not necessary to provide a touch panel substrate. As a result, the entire liquid crystal display device 51 can be formed thin.

(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. For example, in the above embodiment, in FIGS. 1 and 6, the first frame 7 and the liquid crystal panel 2 are bonded using the double-sided adhesive tape 41. However, the first frame 7 and the liquid crystal panel 2 can be bonded using, for example, a non-tape adhesive.

  In FIG. 1, the second frame 8 is not necessarily provided when implementing the present invention. Even when the second frame 8 is not provided, since the first frame 7 is directly bonded to the liquid crystal panel 2, the liquid crystal panel 2 can ensure strength against external force.

  Moreover, although the low temperature polysilicon TFT element was illustrated as a switching element, not only a low temperature polysilicon TFT element but a high temperature polysilicon TFT element and an amorphous silicon TFT element may be used. Alternatively, a TFD element which is a two-terminal nonlinear resistance element may be used.

  In the above embodiment, the liquid crystal display device is exemplified as the electro-optical device. However, the present invention is not limited to the organic EL device, the inorganic EL device, the plasma display device, the electrophoretic display device, and the field emission display device (that is, the field emission display device). It can also be applied to various electro-optical devices such as

(Embodiment of electronic device)
Hereinafter, an electronic device according to the present invention will be described with reference to embodiments. In addition, this embodiment shows an example of this invention and this invention is not limited to this embodiment.

  FIG. 8 shows an embodiment of an electronic apparatus according to the invention. The electronic apparatus shown here includes a liquid crystal display device 71 and a control circuit 70 that controls the liquid crystal display device 71. The control circuit 70 includes a display information output source 74, a display information processing circuit 75, a power supply circuit 76, and a timing generator 77. The liquid crystal display device 71 includes a liquid crystal panel 72 and a drive circuit 73.

  The display information output source 74 includes a memory such as a RAM (Random Access Memory), a storage unit such as various disks, a tuning circuit that tunes and outputs a digital image signal, and various clock signals generated by the timing generator 77. The display information processing circuit 75 is supplied with display information such as an image signal in a predetermined format.

  Next, the display information processing circuit 75 includes a number of well-known circuits such as an amplification / inversion circuit, a rotation circuit, a gamma correction circuit, a clamp circuit, and the like, executes processing of input display information, and outputs an image signal. It is supplied to the drive circuit 73 together with the clock signal CLK. Here, the drive circuit 73 is a general term for an inspection circuit and the like together with a scanning line drive circuit and a data line drive circuit. The power supply circuit 76 supplies a predetermined power supply voltage to each of the above components.

  The liquid crystal display device 71 can be configured using, for example, the liquid crystal display device 1 shown in FIG. 1 or the liquid crystal display device 51 shown in FIG. In the liquid crystal display devices 1 and 51, since the first frame 7 is directly bonded to the surface of the liquid crystal panel 2 opposite to the display surface C, the strength of the liquid crystal panel 2 against external force can be increased. The liquid crystal panel 2 can be formed thin. Therefore, the liquid crystal display devices 1 and 51 using the liquid crystal panel 2 can be formed thin. As a result, the electronic apparatus according to the present invention using the liquid crystal display devices 1 and 51 can also be formed thin.

  Further, since the plurality of prisms 46 formed on the light guide 6 are not exposed to the outside, the prisms 46 can be prevented from being damaged. Thereby, it is not necessary to provide a cover glass or the like for protecting the display surface C side of the liquid crystal panel 2 in the electronic device. As a result, the electronic apparatus according to the present invention using the liquid crystal display devices 1 and 51 can also be formed thin.

  FIG. 9 shows a mobile phone which is another embodiment of the electronic apparatus according to the present invention. A cellular phone 80 shown here has a main body portion 81 and a display body portion 82 provided on the main body portion 81 so as to be opened and closed. A display device 83 configured by an electro-optical device such as a liquid crystal display device is disposed inside the display body portion 82, and various displays related to telephone communication can be visually recognized on the display body portion 82 on the display screen 84. Operation buttons 85 are arranged on the main body 81.

  An antenna 86 is attached to one end of the display body 82 so as to be extendable and contractible. A speaker (not shown) is arranged inside the receiver 87 provided at the upper part of the display body 82. Further, a microphone (not shown) is built in the transmitter 88 provided at the lower end of the main body 81. A control unit for controlling the operation of the display device 83 is stored in the main body 81 or the display body unit 82 as a part of the control unit that controls the entire mobile phone or separately from the control unit. The

  The display device 83 can be configured using, for example, the liquid crystal display device 1 shown in FIG. 1 or the liquid crystal display device 51 shown in FIG. In the liquid crystal display devices 1 and 51, since the first frame 7 is directly bonded to the surface of the liquid crystal panel 2 opposite to the display surface C, the strength of the liquid crystal panel 2 against external force can be increased. The liquid crystal panel 2 can be formed thin. Therefore, the liquid crystal display devices 1 and 51 using the liquid crystal panel 2 can be formed thin. As a result, the electronic apparatus according to the present invention using the liquid crystal display devices 1 and 51 can also be formed thin.

  Further, since the plurality of prisms 46 formed on the light guide 6 are not exposed to the outside, the prisms 46 can be prevented from being damaged. Thereby, it is not necessary to provide a cover glass or the like for protecting the display surface C side of the liquid crystal panel 2 in the electronic device. As a result, the electronic apparatus according to the present invention using the liquid crystal display devices 1 and 51 can also be formed thin.

(Modification)
In addition to the above-described mobile phones and the like as electronic devices, personal computers, liquid crystal televisions, viewfinder type or monitor direct view type video tape recorders, car navigation devices, pagers, electronic notebooks, calculators, word processors, Examples include workstations, video phones, and POS terminals.

  In the liquid crystal display device 1 of FIG. 2, the thickness T1 of the first light transmitting substrate 11a is set to 0.1 mm, the thickness T2 of the second light transmitting substrate 12a is set to 0.3 mm, and the thickness of the first frame 7 is set. T3 was set to 0.15 mm. At this time, the first translucent substrate 11a and the second translucent substrate 12a were formed to have the above-described thicknesses by polishing a glass substrate having a thickness of 0.4 mm. The first frame 7 was formed by bending using a stainless steel material having a thickness of 0.15 mm. A lighting experiment was performed using the liquid crystal display device 1 having this configuration.

  As a result, the liquid crystal display device 1 having the above configuration was able to perform stable display. Further, even when an external force such as an impact or a force that bends the liquid crystal panel 2 is applied to the liquid crystal panel 2, stable display can be performed. Further, the liquid crystal panel 2 was not damaged by the external force.

  In the liquid crystal display device 51 of FIG. 7, the thickness T1 of the first translucent substrate 11a is set to 0.1 mm, the thickness T2 of the second translucent substrate 12a is set to 0.3 mm, and the thickness of the first frame 7 is set. T3 was set to 0.15 mm. At this time, the first translucent substrate 11a and the second translucent substrate 12a were formed to have the above-described thicknesses by polishing a glass substrate having a thickness of 0.4 mm. The first frame 7 was formed by bending using a stainless steel material having a thickness of 0.15 mm. A lighting experiment was performed using the liquid crystal display device 51 having this configuration.

  As a result, the liquid crystal display device 51 having the above configuration was able to perform stable display. Further, even when an external force such as an impact or a force that bends the liquid crystal panel 2 is applied to the liquid crystal panel 2, stable display can be performed. Further, the liquid crystal panel 2 was not damaged by the external force.

1 is an exploded perspective view showing an embodiment of an electro-optical device according to the invention. It is sectional drawing of the electro-optical apparatus shown along the BB line of FIG. FIG. 3 is an enlarged cross-sectional view illustrating a main part of the electro-optical device in FIG. 2. FIG. 3 is a circuit diagram illustrating an example of an electrical equivalent circuit of the electro-optical device in FIG. 2. It is sectional drawing which expands and shows the part shown by the arrow E of FIG. FIG. 6 is an exploded perspective view showing another embodiment of the electro-optical device according to the invention. FIG. 7 is a cross-sectional view of the electro-optical device shown along line BB in FIG. 6. It is a block diagram which shows one Embodiment of the electronic device which concerns on this invention. It is a perspective view which shows other embodiment of the electronic device which concerns on this invention.

Explanation of symbols

1,51. 1. liquid crystal display device (electro-optical device), LCD panel (electro-optical panel),
3. Driving IC, 4. 4. lighting device; LED (light source), 6. Light guide,
6a. Illumination light incident surface, 6b. Illumination light exit surface, 6c. Display light exit surface,
7). First frame, 8. Second frame, 11. Element substrate (first substrate),
11a. 11. a first translucent substrate; Color filter substrate (second substrate),
12a. 12. a second translucent substrate; Sealing material, 14. Liquid crystal layer, 15. Conductive material,
16. FPC board, 17. ACF, 19. 20. Overhang part TFT element,
22a. Pixel electrode, 22b. Common electrode, 23a, 23b. Alignment film, 24. wiring,
25. 26. External connection terminal Polarizing plate, 27. Light shielding member, 28. Coloring elements,
29. Overcoat layer, 30. Photo spacer, 31. Gate electrode,
31 '. Gate electrode line, 32. Gate insulating film, 33. Semiconductor layer,
34. Source electrode, 34 '. Source electrode wire, 35. Drain electrode, 36. Reflective layer,
37a. First contact hole, 37b. Second contact hole,
37c. A third contact hole, 38a. A first interlayer insulating film,
38b. Second interlayer insulating film, 41. 42. Double-sided adhesive tape Frame-shaped double-sided adhesive tape,
43. Scanning line, 44. Data line, 52. Touch panel input section (input means),
53. Sealing material, 54. 54. External connection terminal 56. Front side substrate Back side board,
57a, 57b. Surface electrodes, 58a, 58b. Low resistance electrode, 59. Protrusion,
61, touch panel; Control circuit, 71. Liquid crystal display devices (electro-optical devices),
72. Liquid crystal panel (electro-optical panel), 73. Drive circuit,
80. 81. Mobile phone (electronic device) Main body, 82. Display body,
83. Display device, 84. Display screen, 85. Operating buttons, 86. antenna,
87. Receiver section, 88. Sending part

Claims (10)

An electro-optical panel for displaying an image on a display surface;
A frame that is formed using a plate-like metal and is attached to the outside of the electro-optical panel;
The electro-optical device, wherein the frame is directly bonded to a surface of the electro-optical panel opposite to the display surface.   2. The electro-optical device according to claim 1, wherein the frame is bonded to the electro-optical panel using a tape having adhesive layers on both front and back surfaces.   3. The electro-optical device according to claim 1, wherein the electro-optical panel includes a first substrate having translucency that forms the display surface, and a side of the first substrate opposite to the display surface. A second substrate provided opposite to the surface of the second substrate, wherein the frame is directly bonded to a surface of the second substrate opposite to the surface facing the first substrate. Electro-optic device. The electro-optical device according to any one of claims 1 to 3,
A plurality of first fitting portions provided at side edges of the frame;
2. An electro-optical device comprising: a second frame that includes a second fitting portion that fits into the first fitting portion and covers the electro-optical panel from the display surface side. The electro-optical device according to any one of claims 1 to 4,
A light source that generates illumination light;
A light guide provided on the display surface side of the electro-optical panel, comprising an illumination light incident surface on which the illumination light is incident, and an illumination light emitting surface that emits the illumination light toward the electro-optical panel When,
An electro-optical device comprising: a plurality of prisms provided on the illumination light exit surface of the light guide. The electro-optical device according to claim 5.
A panel-shaped input means provided on the display surface side of the electro-optical panel and having translucency;
The input means includes an input device substrate having translucency, and a position detection means provided on the input device substrate.
The electro-optical device, wherein the input device substrate is constituted by the light guide.   7. The electro-optical device according to claim 3, wherein the thickness of the first substrate and the thickness of the second substrate are different.   An electronic apparatus comprising the electro-optical device according to claim 1. An electro-optical panel for displaying an image on a display surface;
A light source that generates illumination light;
A light guide provided on the display surface side of the electro-optical panel, comprising an illumination light incident surface on which the illumination light is incident, and an illumination light emitting surface that emits the illumination light toward the electro-optical panel When,
An electronic apparatus comprising: a plurality of prisms provided on the illumination light exit surface of the light guide. An electro-optical panel for displaying an image on a display surface;
A frame that is formed using a plate-like metal and is attached to the outside of the electro-optical panel;
The electronic apparatus is characterized in that the frame is directly bonded to a surface of the electro-optical panel opposite to the display surface.

Images