JP2008064918A - Electro-optical device, liquid crystal device, and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electro-optical device for removing static electricity of a counter substrate even when having a configuration forming no transparent conductive film on the counter substrate, and to provide a liquid crystal device and electronic apparatus. <P>SOLUTION: The liquid crystal device 1 has a liquid crystal panel 2 and a barrier mask substrate 30. The liquid crystal panel 2 has a glass substrate 11 arranged facingly, a liquid crystal 40 arranged therebetween, and a common electrode and a pixel electrode formed on the glass substrate, and drives the liquid crystal 40 by a lateral electric field generated by the common electrode and the pixel electrode. The barrier mask substrate 30 has a barrier layer 32 and a transparent conductive film 50. The static electricity of the counter substrate 10 and the barrier mask substrate 30 can be removed by the transparent conductive film 50. An opening 33 is provided in the barrier layer 32, and an observer views a first image by a pixel 4L or a second image by a pixel 4R through the opening 33 in response to a visual angle. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electro-optical device, a liquid crystal device, and an electronic apparatus that simultaneously display two images in different directions.

  One liquid crystal device uses a lateral electric field mode in which a liquid crystal is driven using a lateral electric field parallel to the substrate. As the transverse electric field mode, an IPS (In Plane Switching) mode described in Patent Document 1, an FFS (Fringe Field Switching) mode described in Patent Document 2, and the like are known. The IPS mode and the FFS mode are modes in which a horizontal electric field is generated in the liquid crystal layer using the common electrode and the pixel electrode formed on the element substrate (back side substrate), and the liquid crystal is driven by the horizontal electric field. According to these transverse electric field modes, a wide viewing angle can be obtained because the liquid crystal molecules are always driven in a state parallel to the substrate.

  Since the liquid crystal device to which the IPS mode and the FFS mode are applied does not have an electrode for driving the liquid crystal on the counter substrate (observation side substrate), in order to remove this when the counter substrate is charged by static electricity. This mechanism is required separately. As such a mechanism, a configuration in which a transparent conductive film is disposed on the outer surface of the counter substrate is known (see Patent Document 3).

  By the way, it is known that two images can be simultaneously displayed in different directions by further overlapping a barrier mask substrate on which a barrier layer having an opening is formed on the surface of the counter substrate of the liquid crystal device. Patent Document 4 describes a three-dimensional image display device that can perform stereoscopic display using these two images. In addition, by making the display directions of the two images greatly different, for example, different observers can also be configured so that the two images can be viewed separately from the diagonal left and right directions. At this time, if the horizontal electric field mode having a wide viewing angle is applied to the liquid crystal device, each image can be displayed with high luminance and high quality.

JP-A-6-148596 JP 2000-89255 A Japanese Patent No. 3573154 Japanese Patent No. 2857429

  However, in a liquid crystal device capable of displaying two images, the counter substrate may be thinly etched to about several tens of micrometers in order to adjust the image display direction. Further, it is difficult to form a transparent conductive film for countermeasures against static electricity on such a counter substrate, and there is a problem that static electricity generated on the counter substrate cannot be easily removed.

  The present invention has been made in view of the above problems, and, due to one of the effects of the present invention, even if the transparent conductive film is not formed on the counter substrate, static electricity on the counter substrate is removed. It becomes possible to do.

  The electro-optical device of the present invention includes a first pixel that displays the first image and a second pixel that displays the second image, and the first image and the second image are in different directions. Simultaneously displaying the first substrate, the second substrate having translucency disposed opposite to the first substrate, the first substrate, and the second substrate. An electro-optic material disposed between the substrate, a common electrode and a pixel electrode formed on a surface of the first substrate on the electro-optic material side, for applying a driving voltage to the electro-optic material, and the first electrode A third substrate having translucency, which is fixed to a surface of the second substrate opposite to the surface on the electro-optic material side, and a surface of the third substrate on the second substrate side. The first pixel and the second pixel adjacent to each other are provided with an opening corresponding to the first pixel and have a light shielding property. A barrier layer, the third being formed at least on one of the two surfaces of the substrate, characterized by comprising a conductive film having a light-to.

  In such a configuration, when the direction in which the first pixels are adjacent to each other when viewed from the opening of the barrier layer is on the right and the direction in which the second pixels are adjacent to the left is on the left, the observer can display with the electro-optical device. Is visually recognized as follows. First, when observing from the direction inclined rightward from the normal direction of the third substrate, the first pixel is shielded by the barrier layer and is not visually recognized, and the second pixel is visually recognized through the opening. On the contrary, when observing from the direction inclined to the left from the normal direction of the third substrate, the second pixel is shielded by the barrier layer and is not visually recognized, and the first pixel is visually recognized through the opening. That is, the observer visually recognizes the second image when the electro-optical device is observed obliquely from the right, and visually recognizes the first image when observed from the oblique left.

  Although the second substrate is not formed with an electrode for applying a driving voltage to the electro-optic material, the second substrate and the second substrate are formed by the light-transmitting conductive film formed on the third substrate. Even if the substrate 3 is charged by static electricity, it can be easily removed. According to such a configuration, even when the second substrate is processed thinly in manufacturing the electro-optical device, after the conductive film is formed on the third substrate, the third substrate is formed on the second substrate. By bonding, the second substrate can be hardly damaged.

  In the present invention, “between the first pixel and the second pixel adjacent to each other” means the first pixel along a certain direction (in the above direction from right to left). The part where the second pixel is adjacent in this order is excluded, and the part where the second pixel and the first pixel are adjacent in this direction along the direction is excluded.

  The liquid crystal device of the present invention includes a first pixel that displays a first image and a second pixel that displays a second image, and the first image and the second image are arranged in different directions. A liquid crystal device for simultaneously displaying a first substrate, a second substrate having translucency disposed to face the first substrate, the first substrate, and the second substrate A common electrode formed on the liquid crystal side surface of the first substrate, and the common electrode formed for each pixel on the liquid crystal side surface of the first substrate. A pixel electrode that applies an electric field substantially parallel to the first substrate to the liquid crystal, and a light-transmitting light fixed to a surface of the second substrate opposite to the liquid crystal side A third substrate having a property and a surface of the third substrate adjacent to each other formed on the surface of the third substrate on the second substrate side. A light-shielding barrier layer provided with an opening corresponding to the second pixel, and a light-transmitting conductive layer formed on at least one of the two surfaces of the third substrate. And a membrane.

  In such a configuration, the observer visually recognizes the second image when the liquid crystal device is observed obliquely from the right, and visually recognizes the first image when observed from the oblique left. This liquid crystal device uses a so-called transverse electric field mode in which the liquid crystal is driven by an electric field parallel to the first substrate, and the liquid crystal molecules are always driven in a state parallel to the substrate. A wide viewing angle can be obtained.

  And although the electrode for applying an electric field to a liquid crystal is not formed in the 2nd board | substrate, the 2nd board | substrate and the 3rd board | substrate with the translucent conductive film formed in the 3rd board | substrate Even if charging due to static electricity occurs, it can be easily removed. In addition, according to such a configuration, even when the second substrate is processed thinly in manufacturing the liquid crystal device, after the conductive film is formed on the third substrate, the third substrate is attached to the second substrate. By combining them, it is possible to make it difficult to damage the second substrate.

  In the liquid crystal device, the conductive film is preferably formed on a surface of the third substrate opposite to the second substrate side. According to such a configuration, since the conductive film is formed on the outer surface of the liquid crystal device or a layer close to the outer surface, the conductive film is easily contacted, and the second substrate and the third substrate are caused by static electricity. Even if charging occurs, it can be easily removed.

  In the liquid crystal device, it is preferable that the conductive film is formed on a surface of the third substrate on the second substrate side, and the barrier layer is formed so as to overlap the conductive film. According to such a configuration, the conductive film is disposed between the second substrate and the third substrate. Then, the distance between the conductive film and the second substrate and the distance between the conductive film and the third substrate can be reduced or brought into contact with each other. Can be removed. Further, since the conductive film is not exposed to the outside, damage to the conductive film can be prevented.

  In the liquid crystal device, the conductive film is preferably formed on a surface of the third substrate on the second substrate side so as to cover the barrier layer. According to such a configuration, the conductive film is formed on the outermost surface of the third substrate and is bonded to the second substrate. Here, the light-transmitting conductive film has high wettability, and the adhesive used for bonding spreads quickly, so that the bonding process between the second substrate and the third substrate can be performed in a short time. . Moreover, it can make it difficult to produce the malfunction that a bubble enters into an adhesive agent at the time of bonding.

  The liquid crystal device further includes a light-transmitting resin layer formed to cover the barrier layer and the surface of the third substrate on the second substrate side, and the conductive film includes the resin It is preferable to be formed so as to overlap the layer. According to such a configuration, the barrier layer can be protected by the resin layer. Moreover, the unevenness | corrugation by a barrier layer and its opening part can be planarized by a resin layer, and it becomes possible to improve the flatness of the electrically conductive film formed on the resin layer. Thereby, static electricity can be removed more efficiently.

  According to another aspect of the invention, there is provided an electronic apparatus including the electro-optical device or the liquid crystal device in a display portion. According to such a configuration, an electronic device that is less prone to display defects due to static electricity can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings shown below, the dimensions and ratios of the components are appropriately different from the actual ones in order to make the components large enough to be recognized on the drawings.

(First embodiment)
FIG. 1 is an enlarged plan view of a liquid crystal device 1 as an electro-optical device according to the first embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the liquid crystal device 1 shown in FIG. As shown in FIG. 2, the liquid crystal device 1 includes a liquid crystal panel 2 as a display panel and a barrier mask substrate 30 bonded to the liquid crystal panel 2 with an adhesive 35.

  The liquid crystal panel 2 includes an element substrate 20 and a counter substrate 10 which are bonded to each other via a frame-shaped sealant (not shown). The element substrate 20 includes a glass substrate 21 as a first substrate in the present invention, and the counter substrate 10 includes a glass substrate 11 as a second substrate in the present invention. A liquid crystal 40 is sealed between the element substrate 20 and the counter substrate 10. The barrier mask substrate 30 has a glass substrate 31 as a third substrate of the present invention as a base. On the surface of the glass substrate 31 on the liquid crystal panel 2 side, a light-shielding barrier layer 32 having an opening 33 is formed.

  3A and 3B are enlarged plan views of the liquid crystal panel 2 and the barrier mask substrate 30 before being bonded to each other. 1 is a liquid crystal device 1 shown in FIG. A hatched portion in FIG. 1 represents a region where the barrier layer 32 formed on the barrier mask substrate 30 exists.

  As shown in FIG. 3A, the liquid crystal panel 2 includes rectangular pixels 4r, 4g, and 4b (hereinafter, collectively referred to as “pixels 4”) arranged in a matrix. Displays red, green, and blue. The pixels 4r, 4g, and 4b are repeatedly arranged in this order in the X-axis direction in the drawing, and in the Y-axis direction, the pixels 4 corresponding to the same color are arranged in a line in a stripe pattern. . A light shielding layer 14 made of a black resin is formed between adjacent pixels 4. Hereinafter, the column of the pixels 4 in the X-axis direction is referred to as a pixel column 5.

  Each pixel 4 contributes to the display of either the first image or the second image. The pixel 4 that displays the first image is also referred to as a pixel 4L, and the pixel 4 that displays the second image is also referred to as a pixel 4R. The pixels 4L and 4R correspond to the first pixel and the second pixel in the present invention, respectively. In the present embodiment, the pixels 4L and 4R are alternately and repeatedly arranged in the direction of the pixel column 5, that is, the X-axis direction, and are arranged so as to be arranged in a stripe pattern in the Y-axis direction.

  As shown in FIG. 3B, the barrier layer 32 formed on the barrier mask substrate 30 is in a region substantially overlapping with the light shielding layer 14 between the pixel 4L and the pixel 4R when viewed from the normal direction of the liquid crystal panel 2. An opening 33 is provided. Here, “between the pixel 4L and the pixel 4R” means a portion where the pixel 4L and the pixel 4R are adjacent in this order along the direction from the right to the left in the drawing (that is, the negative direction of the X axis). A portion where the pixels 4L and 4R are adjacent in this order along the direction is excluded. Accordingly, the openings 33 are provided at portions corresponding to every other light shielding layer 14 in the X-axis direction. Further, the width of the opening 33 is slightly larger than the width of the light shielding layer 14.

  FIG. 4 is an enlarged plan view showing the configuration of one pixel 4. In the pixel 4, a gate line 26 parallel to the X axis and a data line 28 parallel to the Y axis are formed. At a position corresponding to the intersection of the gate line 26 and the data line 28, a TFT (Thin Film Transistor) element 22 as a switching element is formed.

  A common electrode 23 and a pixel electrode 24 are formed in a rectangular region surrounded by the gate line 26 and the data line 28. The common electrode 23 is formed over substantially the entire surface of this rectangular region. The pixel electrode 24 is formed in a region substantially overlapping the common electrode 23, and a large number of elongated slits 24a are provided in parallel. Therefore, in the region of the pixel electrode 24 where the slits 24a are provided, a large number of elongated linear electrodes are arranged in parallel. In other words, the pixel electrode 24 has a striped portion. The common electrode 23 is connected to a constant potential line (not shown), and the pixel electrode 24 is connected to the drain electrode 22d (see FIG. 2) of the TFT element 22 through a contact hole 45a.

  2, the liquid crystal device 1 in a state where the liquid crystal panel 2 shown in FIG. 3A and the barrier mask substrate 30 shown in FIG. 3B are bonded together (that is, the state shown in FIG. 1). The configuration will be described in detail.

  The element substrate 20 included in the liquid crystal device 1 includes a so-called TFT element substrate including a TFT element 22 formed for each pixel 4, a gate line 26 connected to the TFT element 22, a data line 28, a pixel electrode 24, and the like. It is. On the surface of the glass substrate 21 included in the element substrate 20 on the liquid crystal 40 side, components from the first layer to the fourth layer are stacked. Further, in order to prevent the constituent elements between these layers from short-circuiting, an interlayer insulating layer 41 is provided between the first layer and the second layer, and an interlayer insulating layer 42 is provided between the second layer and the third layer. However, an interlayer insulating layer 43 is formed between the third layer and the fourth layer. As the switching element, a two-terminal TFD (Thin Film Diode) element or the like may be used instead of the three-terminal TFT element 22.

  In the first layer provided on the surface of the glass substrate 21, a gate electrode 22g of the TFT element 22 is formed.

A second layer is formed on the first layer with an interlayer insulating layer 41 made of SiO ₂ or SiN interposed therebetween. In the second layer, a semiconductor layer 22a made of amorphous silicon is formed at a position overlapping the gate electrode 22g. Further, the source electrode 22s is formed in the source region of the semiconductor layer 22a, and the drain electrode 22d is partially overlapped in the drain region. The source electrode 22s is connected to the data line 28 (see FIG. 4). A TFT element 22 is configured by the semiconductor layer 22a, the source electrode 22s, the drain electrode 22d, and the gate electrode 22g.

A third layer is formed on the second layer with an interlayer insulating layer 42 made of SiO ₂ or SiN interposed therebetween. A common electrode 23 made of light-transmitting ITO (Indium Tin Oxide) is formed on the third layer. The common electrode 23 is connected to a constant potential line (not shown) and is kept at a constant potential.

  A fourth layer is formed on the third layer with an interlayer insulating layer 43 made of SiN or the like interposed therebetween. In the fourth layer, the pixel electrode 24 having a striped portion is formed so as to overlap the common electrode 23. The pixel electrode 24 is connected to the drain electrode 22 d of the TFT element 22 through a contact hole 45 a formed through the interlayer insulating layers 42 and 43.

  When a driving voltage is applied between the common electrode 23 and the pixel electrode 24, an electric field is generated from the pixel electrode 24 toward the common electrode 23 (or from the common electrode 23 toward the pixel electrode 24). At this time, an electric field substantially parallel to the glass substrate 21, that is, a transverse electric field is generated in the layer where the liquid crystal 40 is disposed. The liquid crystal molecules 40a change the alignment direction in a plane parallel to the glass substrate 21 according to the transverse electric field. As a result, the relative angle with respect to the transmission axes of the polarizing plates 46a and 46b changes, and display is performed based on the polarization conversion function corresponding to the relative angle. Such a liquid crystal mode is called an FFS mode, and a wide viewing angle is obtained due to the liquid crystal molecules 40a being always driven in parallel with the glass substrate 21. Further, an alignment film (not shown) made of polyimide is formed on the surface layer of the fourth layer.

  A polarizing plate 46b is disposed on the surface of the glass substrate 21 opposite to the liquid crystal 40 side. Further, a backlight 48 that irradiates light toward the liquid crystal device 1 is disposed so as to face the polarizing plate 46b.

  On the other hand, on the surface of the glass substrate 11 included in the counter substrate 10 on the liquid crystal 40 side, a red color filter 12r, a green color filter 12g (not shown), and a blue color corresponding to the pixels 4r, 4g, and 4b, respectively. A color filter 12b (hereinafter collectively referred to as “color filter 12”) is formed. The color filter 12 is a resin that absorbs light having a specific wavelength in incident light, and the color filter 12 can change the transmitted light to a predetermined color (for example, red, green, or blue). A light shielding layer 14 made of a black resin having a light shielding property is formed in a region between adjacent pixels 4. An alignment film (not shown) made of polyimide is formed on the surface layer of the color filter 12 and the light shielding layer 14. Note that an overcoat made of a light-transmitting resin may be laminated on the color filter 12 and the light shielding layer 14, and an alignment film may be formed thereon.

  The glass substrate 11 is processed to a thickness of about 50 μm by chemical etching or CMP (Chemical Mechanical Polishing). By this processing, the distance between the color filter 12 from which display light is substantially emitted and the opening 33 of the barrier layer 32 is adjusted, and as a result, the angle of the optical path from the color filter 12 to the opening 32 is adjusted. The Thereby, the first image and the second image can be displayed at a suitable angle by the liquid crystal device 1.

  A barrier mask substrate 30 is attached to the surface of the glass substrate 11 opposite to the liquid crystal 40 via an adhesive 35. The barrier mask substrate 30 has a glass substrate 31 as a base, and the above-described barrier layer 32 is formed on the surface of the glass substrate 31 on the liquid crystal 40 side. On the outer surface of the glass substrate 31 (that is, the surface opposite to the glass substrate 11 side), a transparent conductive film 50 and a polarizing plate 46a as a light-transmitting conductive film in the present invention are arranged on the substantially entire surface in this order. Has been. ITO can be used for the transparent conductive film 50. The transmission axis of the polarizing plate 46a is set to be orthogonal to the transmission axis of the polarizing plate 46b.

  The transparent conductive film 50 is kept at a constant potential. For example, the ground potential, the same potential as the common electrode 23, the center potential of the image signal supplied to the data line 28, the non-selection potential of the scanning signal applied to the gate line 26, the logic potential of the driving means for driving the liquid crystal device 1 Any one of the constant potentials can be used.

  FIG. 5 is a diagram illustrating a cross-sectional structure of the liquid crystal device 1 having the above configuration, together with a relationship between a viewing angle and a display visually recognized at the viewing angle. This drawing is drawn focusing on the light passing through the opening 33 disposed between the pixel 4b (pixel 4R) and the pixel 4r (pixel 4L). The behavior of light passing through the other openings 33 is the same as that in this figure. Further, in this drawing, the glass substrate 11 is drawn thick for convenience of description of the optical path, and the constituent elements of the element substrate 20 are omitted.

  The display light from the pixel 4r passes through the opening 33 and is refracted when entering the air layer, and then is visually recognized in an angular range denoted by reference numeral 9r. Similarly, the display light from the pixel 4g and the pixel 4b is visually recognized in an angle range denoted by reference numerals 9g and 9b, respectively. The angle range 9r and angle range 9b, the angle range 9r and angle range 9g, and the angle range 9b and angle range 9g partially overlap.

  As a result, in the angle range VL distributed from the front to the left, the display light from the pixel 4b is shielded by the barrier layer 32 and is not visually recognized, but only the display light from the pixel 4r is visually recognized. On the other hand, in the angle range VR distributed from the front to the right, the display light from the pixel 4r is shielded by the barrier layer 32 and is not visually recognized, but only the display light from the pixel 4b is visually recognized. In other words, in the angle range VL, only the first image by the pixel 4L is visually recognized, and in the angle range VR, only the second image by the pixel 4R is visually recognized. Thus, the liquid crystal device 1 can display two different images in the angle ranges VL and VR. The angle ranges VL and VR are each about 30 °.

  Thus, the liquid crystal device 1 is a so-called two-screen display and is observed from an oblique left and right direction, and therefore needs to have a wide viewing angle. Therefore, the transverse electric field mode (FFS) was adopted as described above.

  Note that, in the front angle range VC sandwiched between the angle ranges VL and VR, both the display light from the pixels 4b and 4r are visually recognized. That is, the angle range VC is a mixed area where both the first image and the second image are displayed. This is because the width of the opening 33 in the X-axis direction is larger than the width of the light shielding layer 14 in the X-axis direction.

  The liquid crystal device 1 described above has the following characteristics because the transparent conductive film 50 is formed on the barrier mask substrate 30. That is, although the electrode for driving the liquid crystal 40 is not formed on the counter substrate 10, static electricity generated on the barrier mask substrate 30 and the counter substrate 10 can be removed through the transparent conductive film 50. It is possible to prevent static electricity from accumulating on the substrate. As a result, high-quality display can be performed with few display problems caused by static electricity.

  The liquid crystal device 1 is manufactured through the following steps. First, the above-described components are laminated on the surface of the glass substrates 11 and 21 on the liquid crystal 40 side. Next, after these two substrates are bonded together via a sealant, the liquid crystal 40 is sealed between the substrates. Subsequently, the glass substrate 11 is processed to a thickness of about 50 μm by chemical etching or CMP. Next, the glass substrate 31 (barrier mask substrate 30) on which the barrier layer 32 and the transparent conductive film 50 are formed in advance is bonded to the glass substrate 11 (counter substrate 10) via the adhesive 35. Finally, polarizing plates 46a and 46b are arranged, and a backlight 48 is attached to complete.

  According to such a manufacturing method, since it is not necessary to directly form the transparent conductive film 50 on the thinly processed glass substrate 11, the glass substrate 11 can be hardly damaged. Then, by sticking the barrier mask substrate 30 provided with the transparent conductive film 50 to the counter substrate 10, static electricity generated in the counter substrate 10 and the barrier mask substrate 30 can be removed, and as a result, static electricity accumulates on these substrates. Can be prevented in advance.

(Second Embodiment)
Next, a liquid crystal device 1A according to a second embodiment of the present invention will be described with reference to FIGS. The liquid crystal device 1A is obtained by changing the arrangement positions of the pixels 4L and 4R, the opening 33, and the transparent conductive film 50 from the liquid crystal device 1 of the first embodiment. Since the other points are the same as those of the liquid crystal device 1 of the first embodiment, the differences will be mainly described below. 6 to 8, the same elements as those in the embodiment of FIGS. 1 to 5 are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 6 is an enlarged plan view of the liquid crystal device 1A according to the second embodiment. The liquid crystal device 1A is also a so-called two-screen display capable of simultaneously displaying the first image and the second image in different directions. The liquid crystal mode employs an FFS mode that provides a wide viewing angle. Similar to the liquid crystal device 1, the liquid crystal device 1 </ b> A has a configuration in which a liquid crystal panel 2 </ b> A as a display panel and a barrier mask substrate 30 </ b> A are bonded together with an adhesive 35. FIGS. 7A and 7B are enlarged plan views of the liquid crystal panel 2A and the barrier mask substrate 30A before being bonded to each other. A shaded portion in FIG. 6 represents a region where the barrier layer 32 formed on the barrier mask substrate 30A exists.

  As shown in FIG. 7A, the liquid crystal panel 2A includes rectangular pixels 4r, 4g, and 4b that display red, green, and blue, respectively. The pixels 4r, 4g, and 4b are repeatedly arranged in this order in the X-axis direction in the drawing, and in the Y-axis direction, the pixels 4 corresponding to the same color are arranged in a line in a stripe pattern. . A light shielding layer 14 is formed between adjacent pixels 4.

  Each pixel 4 is assigned to either a pixel 4L that displays the first image or a pixel 4R that displays the second image. In the present embodiment, the pixels 4L and 4R are alternately and repeatedly arranged in the X-axis direction, and are also alternately and repeatedly arranged in the Y-axis direction orthogonal thereto. That is, the order of the components in the X-axis direction of each pixel column 5 is the order of the pixel 4L, the light shielding layer 14, the pixel 4R, and the light shielding layer 14 in any pixel column 5, and this is repeated in units. However, between the adjacent pixel rows 5, the above repeating units are arranged so as to be shifted by a half pitch. In other words, the pixels 4L and the pixels 4R are arranged so as to be alternately arranged for each pixel column 5 in a direction orthogonal to the pixel column 5 (Z-axis direction).

  In accordance with this, as shown in FIG. 6B, the position of the opening 33 of the barrier layer 32 formed on the barrier mask substrate 30A is also changed from the liquid crystal device 1 of the first embodiment. The barrier layer 32 has an opening 33 in a region substantially overlapping with the light shielding layer 14 between the pixel 4L and the pixel 4R when viewed from the normal direction of the liquid crystal panel 2. Here, “between the pixel 4L and the pixel 4R” refers to a portion where the pixel 4L and the pixel 4R are adjacent in this order along the direction from the right to the left in the drawing (that is, the direction of the X axis). A portion where the pixels 4L and 4R are adjacent in this order along the direction is excluded. From the above, the opening 33 is provided in a portion corresponding to every other light shielding layer 14 in both the X-axis direction and the Y-axis direction. That is, in the present embodiment, the opening 33 is also arranged at a position shifted by a half pitch for each pixel column 5 in accordance with the arrangement pattern of the pixels 4L and 4R. In other words, the slit-shaped openings 33 having a length substantially equal to the width of the pixel column 5 in the Y-axis direction are arranged in an oblique direction. Such a barrier layer 32 is also called a step barrier. Further, the width of the opening 33 is slightly larger than the width of the light shielding layer 14.

  In the liquid crystal device 1A configured using such a step barrier, the distance between the two closest pixels 4L among the pixels 4L that display the same hue is the distance in a normal liquid crystal device that does not perform two-screen display. Therefore, the display resolution is 1 / √2 times that of a normal liquid crystal device. This feature is the same for the pixel 4R. On the other hand, when the pixels 4L and 4R are arranged in stripes as in the liquid crystal device 1 of the first embodiment, the resolution is ½ times that of a normal liquid crystal device. As a result, the resolution can be improved by √2 times from the first embodiment.

  The cross-sectional structure of the liquid crystal device 1A and the relationship between the viewing angle and the display visually recognized at the viewing angle are the same as those of the liquid crystal device 1 of the first embodiment, and are shown in FIG. Therefore, the liquid crystal device 1A of the present embodiment can also display different first and second images in the angular ranges VL and VR.

  FIG. 8 is a schematic cross-sectional view of the liquid crystal device 1A shown in FIG. In the liquid crystal device 1A, the transparent conductive film 50 is formed on substantially the entire surface of the glass substrate 31 on the glass substrate 11 side. The barrier layer 32 is formed so as to overlap the transparent conductive film 50. According to such a configuration, since the transparent conductive film 50 is disposed between the glass substrate 11 and the glass substrate 31, static electricity on both the substrates can be effectively removed. Moreover, since the transparent conductive film 50 is not exposed to the outside, damage to the transparent conductive film 50 can be prevented.

(Third embodiment)
Next, a liquid crystal device 1B according to a third embodiment of the present invention will be described with reference to FIG. The liquid crystal device 1B is obtained by changing the arrangement position of the transparent conductive film 50 from the liquid crystal device 1 of the first embodiment. Since the other points are the same as those of the liquid crystal device 1 of the first embodiment, the differences will be mainly described below. In FIG. 9, the same elements as those in the embodiment of FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 9 is a schematic cross-sectional view of a liquid crystal device 1B according to the third embodiment. The liquid crystal device 1B is also a so-called two-screen display capable of simultaneously displaying the first image and the second image in different directions, and an FFS mode in which a wide viewing angle is obtained is adopted as the liquid crystal mode. Similar to the liquid crystal device 1, the liquid crystal device 1 </ b> B has a configuration in which a liquid crystal panel 2 </ b> B as a display panel and a barrier mask substrate 30 </ b> B are bonded together with an adhesive 35. The enlarged plan view of the liquid crystal device 1B, the liquid crystal panel 2B, and the barrier mask substrate 30B is the same as that of the liquid crystal device 1, the liquid crystal panel 2, and the barrier mask substrate 30, and is shown in FIGS. That is, the pixels 4r, 4g, 4b and the pixels 4L, 4R are all arranged in a stripe shape in the Y-axis direction, and the openings 33 of the barrier layer 32 are alternately shielded in the X-axis direction. A portion corresponding to the layer 14 is provided. As shown in FIG. 9, in the liquid crystal device 1 </ b> B, the barrier layer 32 is formed on the glass substrate 11 side surface of the glass substrate 31, and the transparent conductive film 50 covers substantially the entire surface of the glass substrate 31 covering the barrier layer 32. Is formed.

  According to such a configuration, since the transparent conductive film 50 is disposed between the glass substrate 11 and the glass substrate 31, static electricity on both the substrates can be effectively removed. Moreover, since the transparent conductive film 50 is not exposed to the outside, damage to the transparent conductive film 50 can be prevented.

  And in the said structure, the transparent conductive film 50 will be arrange | positioned on the surface of the bonding side with the glass substrate 11 of the glass substrate 31. FIG. Here, since the transparent conductive film 50 has high wettability and the adhesive used for bonding spreads quickly, the bonding process between the glass substrate 11 and the glass substrate 31 can be performed in a short time. The contact angle of the acrylic resin used for the barrier layer 32 with pure water was about 85 °, while the contact angle of ITO, which is the material of the transparent conductive film 50, with pure water was about 5 °. The time required for the adhesive 35 to spread on the transparent conductive film 50 was about ¼ of the time required for the adhesive 35 to spread on the barrier layer 32. Thus, by applying and bonding the adhesive 35 in a short time, it is possible to make it difficult to cause a problem that air bubbles enter the adhesive 35 at the time of bonding.

(Fourth embodiment)
Subsequently, a liquid crystal device 1 </ b> C according to a fourth embodiment of the present invention will be described with reference to FIGS. 10 and 11. The liquid crystal device 1 </ b> C is obtained by changing the arrangement of the common electrode 23 and the pixel electrode 24 of the pixel 4 and the arrangement position of the transparent conductive film 50 from the liquid crystal device 1 of the first embodiment. Since the other points are the same as those of the liquid crystal device 1 of the first embodiment, the differences will be mainly described below. 10 and 11, the same elements as those in the embodiment of FIGS. 2 and 4 are denoted by the same reference numerals, and description thereof is omitted.

  The liquid crystal device 1C is also a so-called two-screen display capable of simultaneously displaying the first image and the second image in different directions, and an IPS mode that provides a wide viewing angle is adopted as the liquid crystal mode. Similarly to the liquid crystal device 1, the liquid crystal device 1C has a configuration in which a liquid crystal panel 2C as a display panel and a barrier mask substrate 30C are bonded together with an adhesive 35 (see FIG. 11). The enlarged plan view of the liquid crystal device 1C, the liquid crystal panel 2C, and the barrier mask substrate 30C is the same as that of the liquid crystal device 1, the liquid crystal panel 2, and the barrier mask substrate 30, and is shown in FIGS. That is, the pixels 4r, 4g, 4b and the pixels 4L, 4R are all arranged in a stripe shape in the Y-axis direction, and the openings 33 of the barrier layer 32 are alternately shielded in the X-axis direction. A portion corresponding to the layer 14 is provided.

  FIG. 10 is an enlarged plan view showing the configuration of one pixel 4 of the liquid crystal device 1C. In the pixel 4, a gate line 26 parallel to the X axis and a data line 28 parallel to the Y axis are formed. A TFT element 22 is formed at a position corresponding to the intersection of the gate line 26 and the data line 28.

  In a rectangular area surrounded by the gate line 26 and the data line 28, a common electrode 23 and a pixel electrode 24 made of ITO are formed. The common electrode 23 and the pixel electrode 24 are both comb-like electrodes having a plurality of comb teeth, and are arranged such that the respective comb teeth enter alternately. The interval between the comb teeth is wider than the width of the slit 24a of the pixel electrode 24 in the first embodiment. In this embodiment, the common electrode 23 has two comb teeth, and the pixel electrode 24 has three comb teeth. The common electrode 23 is connected to a constant potential line (not shown), and the pixel electrode 24 is connected to the drain electrode 22d (see FIG. 11) of the TFT element 22 through a contact hole 45a.

  FIG. 11 is a schematic cross-sectional view of the liquid crystal device 1C. The components from the first layer to the third layer are laminated on the surface of the glass substrate 21 included in the element substrate 20 on the liquid crystal 40 side. Further, in order to prevent the constituent elements between these layers from short-circuiting, an interlayer insulating layer 41 is provided between the first layer and the second layer, and an interlayer insulating layer 42 is provided between the second layer and the third layer. Are formed.

  In the first layer provided on the surface of the glass substrate 21, a gate electrode 22g of the TFT element 22 is formed.

A second layer is formed on the first layer with an interlayer insulating layer 41 made of SiO ₂ or SiN interposed therebetween. A semiconductor layer 22a, a source electrode 22s, and a drain electrode 22d are formed in the second layer, and the TFT element 22 is configured by these and the gate electrode 22g.

A third layer is formed on the second layer with an interlayer insulating layer 42 made of SiO ₂ or SiN interposed therebetween. On the third layer, a common electrode 23 and a pixel electrode 24 made of ITO are formed. This figure shows a cross section along a line perpendicular to the comb teeth of the common electrode 23 and the pixel electrode 24. The comb teeth of the common electrode 23 and the comb teeth of the pixel electrode 24 are alternately arranged at equal intervals. I understand that. The common electrode 23 is connected to a constant potential line (not shown) and is kept at a constant potential. The pixel electrode 24 is connected to the drain electrode 22 d of the TFT element 22 through a contact hole 45 a provided in the interlayer insulating layer 42.

  When a driving voltage is applied between the common electrode 23 and the pixel electrode 24, an electric field is generated from the pixel electrode 24 toward the common electrode 23 (or from the common electrode 23 toward the pixel electrode 24). At this time, an electric field substantially parallel to the glass substrate 21, that is, a transverse electric field is generated in the layer where the liquid crystal 40 is disposed. The liquid crystal molecules 40a change the alignment direction in a plane parallel to the glass substrate 21 according to the transverse electric field. As a result, the relative angle with respect to the transmission axes of the polarizing plates 46a and 46b changes, and display is performed based on the polarization conversion function corresponding to the relative angle. Such a liquid crystal mode is called IPS, and a wide viewing angle can be obtained due to the liquid crystal molecules 40a being always driven in parallel with the glass substrate 21. Further, an alignment film (not shown) made of polyimide is formed on the surface layer of the third layer.

  The configuration of the counter substrate 10 is the same as that of the liquid crystal device 1 of the first embodiment.

  A barrier layer 32 is formed on the liquid crystal 40 side surface of the glass substrate 31 included in the barrier mask substrate 30C. A transparent resin layer 52 is formed so as to cover the barrier layer 32 and the surface of the glass substrate 31 on the liquid crystal 40 side. A transparent conductive film 50 made of ITO is laminated on the resin layer 52. According to such a configuration, the barrier layer 32 can be protected by the resin layer 52. Moreover, since the transparent conductive film 50 will be arrange | positioned between the glass substrate 11 and the glass substrate 31, the static electricity of these both board | substrates can be removed effectively. Furthermore, since the transparent conductive film 50 is not exposed to the outside, damage to the transparent conductive film 50 can be prevented. In addition, since the transparent conductive film 50 has high wettability with respect to the adhesive 35, the adhesive 35 used for bonding spreads quickly and the bonding process between the glass substrate 11 and the glass substrate 31 can be performed in a short time. it can.

  In addition, according to such a configuration, the unevenness caused by the barrier layer 32 and the opening 33 can be flattened by the resin layer 52, and the flatness of the transparent conductive film 50 formed over the resin layer 52 is improved. It becomes possible to make it. Thereby, static electricity can be removed more efficiently.

(Example of mounting on electronic equipment)
The above-described liquid crystal device 1 (including liquid crystal devices 1A, 1B, and 1C; the same applies hereinafter) can be used by being mounted on a display device 100 for a car navigation system as an electronic device as shown in FIG. 12, for example. . The display device 100 can simultaneously display two images in different directions by the liquid crystal device 1 incorporated in the display unit 110. For example, a map image can be displayed on the driver's seat side, and a movie image can be displayed on the passenger seat side. At that time, high-quality display with few problems due to static electricity can be performed.

  The liquid crystal device 1 to which the present invention is applied can be used for various electronic devices such as a mobile computer, a digital camera, a digital video camera, an in-vehicle device, and an audio device in addition to the display device 100.

  As mentioned above, although embodiment of this invention was described, various deformation | transformation can be added with respect to the said embodiment in the range which does not deviate from the meaning of this invention. As modifications, for example, the following can be considered.

(Modification)
The configuration of the above embodiment is an example, and in implementing the present invention, the liquid crystal mode, the shape of the barrier mask substrate 30 (including the barrier mask substrates 30A, 30B, and 30C; the same applies hereinafter), the arrangement position of the transparent conductive film 50 Can be used in any combination of those shown in the above embodiments. That is, either the FFS mode or the IPS mode is used as the liquid crystal mode, and the barrier mask substrate 30 is configured to have either a stripe-shaped opening 33 or a step-shaped opening 33 (step barrier), transparent Any of the above-described four types of arrangement positions of the conductive film 50 can be arbitrarily selected and used in combination.

  Of course, the liquid crystal mode, the shape of the barrier mask substrate, and the arrangement position of the transparent conductive film 50 may be further modified within the scope of the present invention. For example, the transparent conductive film 50 can be arranged on both surfaces of the glass substrate 31. Alternatively, the polarizing plate 46a disposed on the barrier mask substrate 30 may be provided with conductivity, and this may be used as the “translucent conductive film” in the present invention.

  Further, similarly to the fourth embodiment, a translucent resin layer 52 formed to cover the liquid crystal 40 side surfaces of the barrier layer 32 and the glass substrate 31 may be adopted in the third embodiment. . According to such a configuration, the barrier layer 32 can be protected by the resin layer 52.

FIG. 2 is an enlarged plan view of the liquid crystal device according to the first embodiment. FIG. 2 is a schematic cross-sectional view of the liquid crystal device illustrated in FIG. 1. (A) is an enlarged plan view of a liquid crystal panel, (b) is an enlarged plan view of a barrier mask substrate. The top view which expanded and showed the structure of one pixel. The figure which showed the cross-section of the liquid crystal device of FIG. 1 with the relationship between a viewing angle and the display visually recognized at the viewing angle. The enlarged plan view of the liquid crystal device which concerns on 2nd Embodiment. (A) is an enlarged plan view of a liquid crystal panel, (b) is an enlarged plan view of a barrier mask substrate. FIG. 7 is a schematic cross-sectional view of the liquid crystal device illustrated in FIG. 6. FIG. 6 is a schematic cross-sectional view of a liquid crystal device according to a third embodiment. The top view which expanded and showed the composition of one pixel of the liquid crystal device concerning a 4th embodiment. FIG. 10 is a schematic cross-sectional view of a liquid crystal device according to a fourth embodiment. The perspective view of the display apparatus for car navigation systems.

Explanation of symbols

  1, 1A, 1B, 1C ... Liquid crystal device as electro-optical device, 2, 2A, 2B, 2C ... Liquid crystal panel as display panel, 4, 4r, 4g, 4b ... Pixel, 4L ... First pixel, 4R ... 2nd pixel, 5... Pixel row, 10... Counter substrate, 11, 21, 31... Glass substrate, 12... Color filter, 14 ... light shielding layer, 20. ... Pixel electrode, 26 ... Gate line, 28 ... Data line, 30, 30A, 30B, 30C ... Barrier mask substrate, 32 ... Barrier layer, 33 ... Opening, 35 ... Adhesive, 40 ... Liquid crystal, 50 ... Transparent conductive film 52 ... Resin layer, 100 ... Display device for car navigation system as electronic equipment.

Claims (7)

An electro-optical device that includes a first pixel that displays a first image and a second pixel that displays a second image, and simultaneously displays the first image and the second image in different directions. There,
A first substrate;
A second substrate having translucency disposed opposite to the first substrate;
An electro-optic material disposed between the first substrate and the second substrate;
A common electrode and a pixel electrode, which are formed on a surface of the first substrate on the electro-optic material side and apply a driving voltage to the electro-optic material;
A third substrate having translucency, which is fixed to a surface of the second substrate opposite to the surface on the electro-optic material side;
The light-shielding property is provided on the surface of the third substrate on the second substrate side, and an opening is provided between the first pixel and the second pixel adjacent to each other. A barrier layer;
A translucent conductive film formed on at least one of the two surfaces of the third substrate;
An electro-optical device comprising: A liquid crystal device that includes a first pixel that displays a first image and a second pixel that displays a second image, and simultaneously displays the first image and the second image in different directions. And
A first substrate;
A second substrate having translucency disposed opposite to the first substrate;
A liquid crystal disposed between the first substrate and the second substrate;
A common electrode formed on the liquid crystal side surface of the first substrate;
A pixel electrode formed on the liquid crystal side surface of the first substrate for each pixel and applying an electric field substantially parallel to the first substrate to the liquid crystal between the common electrode;
A third substrate having translucency, which is fixed to a surface opposite to the liquid crystal side surface of the second substrate;
The light-shielding property is provided on the surface of the third substrate on the second substrate side, and an opening is provided between the first pixel and the second pixel adjacent to each other. A barrier layer;
A translucent conductive film formed on at least one of the two surfaces of the third substrate;
A liquid crystal device comprising: The liquid crystal device according to claim 2,
The liquid crystal device, wherein the conductive film is formed on a surface of the third substrate opposite to the second substrate side. The liquid crystal device according to claim 2,
The liquid crystal device, wherein the conductive film is formed on a surface of the third substrate on the second substrate side, and the barrier layer is formed to overlap the conductive film. The liquid crystal device according to claim 2,
The liquid crystal device, wherein the conductive film is formed on a surface of the third substrate on the second substrate side so as to cover the barrier layer. The liquid crystal device according to claim 2,
A resin layer having translucency, which is formed to cover the barrier layer and the surface of the third substrate on the second substrate side;
The liquid crystal device, wherein the conductive film is formed so as to overlap the resin layer.   An electronic apparatus comprising the display unit including the electro-optical device or the liquid crystal device according to claim 1.

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